From 4608f5d0a3be5d0ee574de6051bdf26c10d032dc Mon Sep 17 00:00:00 2001
From: Kuppili Pavan <pavankuppili6@gmail.com>
Date: Tue, 7 Oct 2025 16:17:50 +0530
Subject: [PATCH 1/2] added some pattern problems

---
 PatternChalange(PYTHON)/day1.py    |  5 +++++
 PatternChalange(PYTHON)/day10.py   | 12 ++++++++++++
 PatternChalange(PYTHON)/day11.py   | 16 ++++++++++++++++
 PatternChalange(PYTHON)/day12.py   | 17 +++++++++++++++++
 PatternChalange(PYTHON)/day13.py   | 17 +++++++++++++++++
 PatternChalange(PYTHON)/day14.py   |  5 +++++
 PatternChalange(PYTHON)/day15.py   |  5 +++++
 PatternChalange(PYTHON)/day16.py   | 12 ++++++++++++
 PatternChalange(PYTHON)/day17.py   |  6 ++++++
 PatternChalange(PYTHON)/day18.py   | 13 +++++++++++++
 PatternChalange(PYTHON)/day19.py   | 23 +++++++++++++++++++++++
 PatternChalange(PYTHON)/day2.py    |  8 ++++++++
 PatternChalange(PYTHON)/day20_1.py |  5 +++++
 PatternChalange(PYTHON)/day20_2.py |  5 +++++
 PatternChalange(PYTHON)/day3.py    |  8 ++++++++
 PatternChalange(PYTHON)/day4.py    |  5 +++++
 PatternChalange(PYTHON)/day5.py    | 10 ++++++++++
 PatternChalange(PYTHON)/day6.py    |  3 +++
 PatternChalange(PYTHON)/day7.py    |  3 +++
 PatternChalange(PYTHON)/day8.py    |  5 +++++
 PatternChalange(PYTHON)/day9.py    |  8 ++++++++
 21 files changed, 191 insertions(+)
 create mode 100644 PatternChalange(PYTHON)/day1.py
 create mode 100644 PatternChalange(PYTHON)/day10.py
 create mode 100644 PatternChalange(PYTHON)/day11.py
 create mode 100644 PatternChalange(PYTHON)/day12.py
 create mode 100644 PatternChalange(PYTHON)/day13.py
 create mode 100644 PatternChalange(PYTHON)/day14.py
 create mode 100644 PatternChalange(PYTHON)/day15.py
 create mode 100644 PatternChalange(PYTHON)/day16.py
 create mode 100644 PatternChalange(PYTHON)/day17.py
 create mode 100644 PatternChalange(PYTHON)/day18.py
 create mode 100644 PatternChalange(PYTHON)/day19.py
 create mode 100644 PatternChalange(PYTHON)/day2.py
 create mode 100644 PatternChalange(PYTHON)/day20_1.py
 create mode 100644 PatternChalange(PYTHON)/day20_2.py
 create mode 100644 PatternChalange(PYTHON)/day3.py
 create mode 100644 PatternChalange(PYTHON)/day4.py
 create mode 100644 PatternChalange(PYTHON)/day5.py
 create mode 100644 PatternChalange(PYTHON)/day6.py
 create mode 100644 PatternChalange(PYTHON)/day7.py
 create mode 100644 PatternChalange(PYTHON)/day8.py
 create mode 100644 PatternChalange(PYTHON)/day9.py

diff --git a/PatternChalange(PYTHON)/day1.py b/PatternChalange(PYTHON)/day1.py
new file mode 100644
index 000000000000..bdfff41a436b
--- /dev/null
+++ b/PatternChalange(PYTHON)/day1.py
@@ -0,0 +1,5 @@
+n=6
+for i in range(n):
+    for j in range(n):
+        print("*",end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day10.py b/PatternChalange(PYTHON)/day10.py
new file mode 100644
index 000000000000..efdf35cfe9b4
--- /dev/null
+++ b/PatternChalange(PYTHON)/day10.py
@@ -0,0 +1,12 @@
+n=5
+a=n
+for i in range(1,n*2-2):
+    if i==1 :
+        print(" "*(n-i-1)+"*")
+    elif i>n and i==n*2-3:
+        print(" "*(i-(n-1))+"*")
+    elif i>n-1:
+        print(" "*(i-(n-1))+"*"+" "*(a-2)+"*")
+        a-=2
+    else:
+        print(" "*(n-i-1)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day11.py b/PatternChalange(PYTHON)/day11.py
new file mode 100644
index 000000000000..27519ea77ca5
--- /dev/null
+++ b/PatternChalange(PYTHON)/day11.py
@@ -0,0 +1,16 @@
+n=int(input("n="))
+lst=[]
+for i in range(n):
+    temp_lst=[]
+    for j in range(i+1):
+        if j==0 or j==i:
+            temp_lst.append(1)
+        else:
+            temp_lst.append(lst[i-1][j-1] + lst[i-1][j])
+    lst.append(temp_lst)
+for i in range(n):
+    for j in range(n-i-1):
+        print(" ",end="")
+    for k in range(i+1):
+        print(lst[i][k],end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day12.py b/PatternChalange(PYTHON)/day12.py
new file mode 100644
index 000000000000..4d9377647aff
--- /dev/null
+++ b/PatternChalange(PYTHON)/day12.py
@@ -0,0 +1,17 @@
+n=int(input("n="))
+for i in range(1,n+1):
+    for j in range(1,n-i+1):
+        print(" ",end=" ")
+    for k in range(i,0,-1):
+        print(k,end=" ")
+    for j in range(2,i+1):
+        print(j,end=" ")
+    print()
+for i in range(n-1,0,-1):
+    for j in range(n-i):
+        print(" ",end=" ")
+    for k in range(i,0,-1):
+        print(k,end=" ")
+    for j in range(2,i+1):
+        print(j,end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day13.py b/PatternChalange(PYTHON)/day13.py
new file mode 100644
index 000000000000..eaea94295305
--- /dev/null
+++ b/PatternChalange(PYTHON)/day13.py
@@ -0,0 +1,17 @@
+n=5
+for i in range(n,0,-1):
+    for j in range(i,0,-1):
+        print("*",end="")
+    for j in range((n-i)*2):
+        print(" ",end="")
+    for j in range(i,0,-1):
+        print("*",end="")
+    print()
+for i in range(n):
+    for j in range(i+1):
+        print("*",end="")
+    for j in range((n-i-1)*2,0,-1):
+        print(" ",end="")
+    for j in range(i+1):
+        print("*",end="")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day14.py b/PatternChalange(PYTHON)/day14.py
new file mode 100644
index 000000000000..6a8aff6f5081
--- /dev/null
+++ b/PatternChalange(PYTHON)/day14.py
@@ -0,0 +1,5 @@
+n=5
+for i in range(1,n-1):
+    print("*"*i+" "*(n-i-1)*2+"*"*i)
+for i in range(n-1,0,-1):
+    print("*"*i+" "*(n-i-1)*2+"*"*i)
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day15.py b/PatternChalange(PYTHON)/day15.py
new file mode 100644
index 000000000000..b28575e5b48d
--- /dev/null
+++ b/PatternChalange(PYTHON)/day15.py
@@ -0,0 +1,5 @@
+n=5
+for i in range(1,n):
+    for j in range(i):
+        print((i+j)%2,end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day16.py b/PatternChalange(PYTHON)/day16.py
new file mode 100644
index 000000000000..3bfeb3f5b591
--- /dev/null
+++ b/PatternChalange(PYTHON)/day16.py
@@ -0,0 +1,12 @@
+n=5
+for i in range(1,n):
+    for j in range(n):
+        if j==1:
+            print(" "*(n-i)+"*")
+        else:
+            print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
+for i in range(1,n+1):
+    if i==1:
+        print(" "*(n-i)+"*")
+    else:
+        print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day17.py b/PatternChalange(PYTHON)/day17.py
new file mode 100644
index 000000000000..fc633afd06f0
--- /dev/null
+++ b/PatternChalange(PYTHON)/day17.py
@@ -0,0 +1,6 @@
+n=5
+print(" "*(n)+"*"*(n+1))
+for i in range(1,n):
+    #print("*"*n)
+    print(" "*(n-i)+"*"+" "*(n-1)+"*")
+print("*"*(n+1))
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day18.py b/PatternChalange(PYTHON)/day18.py
new file mode 100644
index 000000000000..bf6334d793e9
--- /dev/null
+++ b/PatternChalange(PYTHON)/day18.py
@@ -0,0 +1,13 @@
+n=6
+a=1
+for i in range(n,0,-1):
+     print(format(" "*(n+1-i),"<1"),end="")
+     for j in range(1,i):
+          print(format(a,"<2"),end="")
+          a+=1
+b=a*2-2
+for i in range(n,1,-1):
+     for j in range(i,1,-1):
+          print(b,end=" ")
+          b-=1
+     print( )
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day19.py b/PatternChalange(PYTHON)/day19.py
new file mode 100644
index 000000000000..fca01e3965a5
--- /dev/null
+++ b/PatternChalange(PYTHON)/day19.py
@@ -0,0 +1,23 @@
+n=int(input("n="))
+k=(2*n)-1
+l=0
+h=k-1
+val=n
+matrx=[[0 for i in range(k)] for j in range(k)]
+for i in range(n):
+    for j in range(l,h+1):
+        matrx[l][j]=val
+    for j in range(l+1,h+1):
+        matrx[j][i]=val
+    for j in range(l+1,h+1):
+        matrx[h][j]=val
+    for j in range(l+1,h):
+        matrx[j][h]=val
+    l+=1
+    h-=1
+    val-=1
+
+for i in range(k):
+    for j in range(k):
+        print(matrx[i][j],end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day2.py b/PatternChalange(PYTHON)/day2.py
new file mode 100644
index 000000000000..efd588a53aaf
--- /dev/null
+++ b/PatternChalange(PYTHON)/day2.py
@@ -0,0 +1,8 @@
+n=5
+for i in range(1,n):
+    for j in range(i):
+        if j<i:
+            print("*",end=" ")
+        else:
+            print(" ",end="")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day20_1.py b/PatternChalange(PYTHON)/day20_1.py
new file mode 100644
index 000000000000..6187c267b836
--- /dev/null
+++ b/PatternChalange(PYTHON)/day20_1.py
@@ -0,0 +1,5 @@
+n=int(input("n="))
+for i in range(n,-1,-1):
+    for j in range(i,-1,-1):
+        print(chr(j+65),end=" ")
+    print()    
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day20_2.py b/PatternChalange(PYTHON)/day20_2.py
new file mode 100644
index 000000000000..e2e884135d8f
--- /dev/null
+++ b/PatternChalange(PYTHON)/day20_2.py
@@ -0,0 +1,5 @@
+n=int(input("n="))
+for i in range(n+1,-1,-1):
+    for j in range(i,n+1):
+        print(chr(65+j),end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day3.py b/PatternChalange(PYTHON)/day3.py
new file mode 100644
index 000000000000..960e78eea8db
--- /dev/null
+++ b/PatternChalange(PYTHON)/day3.py
@@ -0,0 +1,8 @@
+n=5
+for i in range(n):
+    for j in range(n):
+        if i<=j:
+            print("*",end=" ")
+        else:
+            print("",end="")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day4.py b/PatternChalange(PYTHON)/day4.py
new file mode 100644
index 000000000000..39c86de9f289
--- /dev/null
+++ b/PatternChalange(PYTHON)/day4.py
@@ -0,0 +1,5 @@
+n=5
+for i in range(n):
+    for j in range(i+1):
+        print(j+1,end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day5.py b/PatternChalange(PYTHON)/day5.py
new file mode 100644
index 000000000000..bdb96b3900a8
--- /dev/null
+++ b/PatternChalange(PYTHON)/day5.py
@@ -0,0 +1,10 @@
+n=5
+t=0
+for i in range(n*2):
+    if i> n:
+        t=2*n-i
+    else:
+        t=i
+    for j in range(t):
+        print("*",end=" ")
+    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day6.py b/PatternChalange(PYTHON)/day6.py
new file mode 100644
index 000000000000..339a9d1f0b40
--- /dev/null
+++ b/PatternChalange(PYTHON)/day6.py
@@ -0,0 +1,3 @@
+n=5
+for i in range(n):
+    print(" "*(n-1-i),"*"*(i*2+1))
diff --git a/PatternChalange(PYTHON)/day7.py b/PatternChalange(PYTHON)/day7.py
new file mode 100644
index 000000000000..555c00dad400
--- /dev/null
+++ b/PatternChalange(PYTHON)/day7.py
@@ -0,0 +1,3 @@
+n=5
+for i in range(n):
+    print(" "*(n-i-1)," *"*i)
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day8.py b/PatternChalange(PYTHON)/day8.py
new file mode 100644
index 000000000000..57aef776dd5c
--- /dev/null
+++ b/PatternChalange(PYTHON)/day8.py
@@ -0,0 +1,5 @@
+n=5
+for i in range(1,n):
+    print(" "*i,"* "*(n+1-i))
+for i in range(1,n+1):
+    print(" "*((n+1)-i),"* "*i)
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day9.py b/PatternChalange(PYTHON)/day9.py
new file mode 100644
index 000000000000..12de4cd21ae8
--- /dev/null
+++ b/PatternChalange(PYTHON)/day9.py
@@ -0,0 +1,8 @@
+n=5
+for i in range(1,n+1):
+    if i==1:
+        print(" "*(n-i)+"*")
+    elif i==n:
+        print("* "*(n))
+    else:
+        print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file

From ff3ef9e31f80e89df2cdcca7758d21be0346263b Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Tue, 7 Oct 2025 10:52:43 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 PatternChalange(PYTHON)/day1.py    |  6 ++---
 PatternChalange(PYTHON)/day10.py   | 22 ++++++++---------
 PatternChalange(PYTHON)/day11.py   | 22 ++++++++---------
 PatternChalange(PYTHON)/day12.py   | 32 ++++++++++++-------------
 PatternChalange(PYTHON)/day13.py   | 30 +++++++++++------------
 PatternChalange(PYTHON)/day14.py   | 10 ++++----
 PatternChalange(PYTHON)/day15.py   |  8 +++----
 PatternChalange(PYTHON)/day16.py   | 18 +++++++-------
 PatternChalange(PYTHON)/day17.py   | 12 +++++-----
 PatternChalange(PYTHON)/day18.py   | 26 ++++++++++----------
 PatternChalange(PYTHON)/day19.py   | 38 +++++++++++++++---------------
 PatternChalange(PYTHON)/day2.py    | 12 +++++-----
 PatternChalange(PYTHON)/day20_1.py | 10 ++++----
 PatternChalange(PYTHON)/day20_2.py | 10 ++++----
 PatternChalange(PYTHON)/day3.py    | 10 ++++----
 PatternChalange(PYTHON)/day4.py    |  6 ++---
 PatternChalange(PYTHON)/day5.py    | 16 ++++++-------
 PatternChalange(PYTHON)/day6.py    |  4 ++--
 PatternChalange(PYTHON)/day7.py    |  4 ++--
 PatternChalange(PYTHON)/day8.py    | 10 ++++----
 PatternChalange(PYTHON)/day9.py    | 14 +++++------
 21 files changed, 160 insertions(+), 160 deletions(-)

diff --git a/PatternChalange(PYTHON)/day1.py b/PatternChalange(PYTHON)/day1.py
index bdfff41a436b..04ab62b91c4d 100644
--- a/PatternChalange(PYTHON)/day1.py
+++ b/PatternChalange(PYTHON)/day1.py
@@ -1,5 +1,5 @@
-n=6
+n = 6
 for i in range(n):
     for j in range(n):
-        print("*",end=" ")
-    print()
\ No newline at end of file
+        print("*", end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day10.py b/PatternChalange(PYTHON)/day10.py
index efdf35cfe9b4..9cb351a8c50c 100644
--- a/PatternChalange(PYTHON)/day10.py
+++ b/PatternChalange(PYTHON)/day10.py
@@ -1,12 +1,12 @@
-n=5
-a=n
-for i in range(1,n*2-2):
-    if i==1 :
-        print(" "*(n-i-1)+"*")
-    elif i>n and i==n*2-3:
-        print(" "*(i-(n-1))+"*")
-    elif i>n-1:
-        print(" "*(i-(n-1))+"*"+" "*(a-2)+"*")
-        a-=2
+n = 5
+a = n
+for i in range(1, n * 2 - 2):
+    if i == 1:
+        print(" " * (n - i - 1) + "*")
+    elif i > n and i == n * 2 - 3:
+        print(" " * (i - (n - 1)) + "*")
+    elif i > n - 1:
+        print(" " * (i - (n - 1)) + "*" + " " * (a - 2) + "*")
+        a -= 2
     else:
-        print(" "*(n-i-1)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file
+        print(" " * (n - i - 1) + "*" + " " * (2 * i - 3) + "*")
diff --git a/PatternChalange(PYTHON)/day11.py b/PatternChalange(PYTHON)/day11.py
index 27519ea77ca5..cc1684193f7d 100644
--- a/PatternChalange(PYTHON)/day11.py
+++ b/PatternChalange(PYTHON)/day11.py
@@ -1,16 +1,16 @@
-n=int(input("n="))
-lst=[]
+n = int(input("n="))
+lst = []
 for i in range(n):
-    temp_lst=[]
-    for j in range(i+1):
-        if j==0 or j==i:
+    temp_lst = []
+    for j in range(i + 1):
+        if j == 0 or j == i:
             temp_lst.append(1)
         else:
-            temp_lst.append(lst[i-1][j-1] + lst[i-1][j])
+            temp_lst.append(lst[i - 1][j - 1] + lst[i - 1][j])
     lst.append(temp_lst)
 for i in range(n):
-    for j in range(n-i-1):
-        print(" ",end="")
-    for k in range(i+1):
-        print(lst[i][k],end=" ")
-    print()
\ No newline at end of file
+    for j in range(n - i - 1):
+        print(" ", end="")
+    for k in range(i + 1):
+        print(lst[i][k], end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day12.py b/PatternChalange(PYTHON)/day12.py
index 4d9377647aff..95f12034d7ad 100644
--- a/PatternChalange(PYTHON)/day12.py
+++ b/PatternChalange(PYTHON)/day12.py
@@ -1,17 +1,17 @@
-n=int(input("n="))
-for i in range(1,n+1):
-    for j in range(1,n-i+1):
-        print(" ",end=" ")
-    for k in range(i,0,-1):
-        print(k,end=" ")
-    for j in range(2,i+1):
-        print(j,end=" ")
+n = int(input("n="))
+for i in range(1, n + 1):
+    for j in range(1, n - i + 1):
+        print(" ", end=" ")
+    for k in range(i, 0, -1):
+        print(k, end=" ")
+    for j in range(2, i + 1):
+        print(j, end=" ")
+    print()
+for i in range(n - 1, 0, -1):
+    for j in range(n - i):
+        print(" ", end=" ")
+    for k in range(i, 0, -1):
+        print(k, end=" ")
+    for j in range(2, i + 1):
+        print(j, end=" ")
     print()
-for i in range(n-1,0,-1):
-    for j in range(n-i):
-        print(" ",end=" ")
-    for k in range(i,0,-1):
-        print(k,end=" ")
-    for j in range(2,i+1):
-        print(j,end=" ")
-    print()
\ No newline at end of file
diff --git a/PatternChalange(PYTHON)/day13.py b/PatternChalange(PYTHON)/day13.py
index eaea94295305..8d01c4521dba 100644
--- a/PatternChalange(PYTHON)/day13.py
+++ b/PatternChalange(PYTHON)/day13.py
@@ -1,17 +1,17 @@
-n=5
-for i in range(n,0,-1):
-    for j in range(i,0,-1):
-        print("*",end="")
-    for j in range((n-i)*2):
-        print(" ",end="")
-    for j in range(i,0,-1):
-        print("*",end="")
+n = 5
+for i in range(n, 0, -1):
+    for j in range(i, 0, -1):
+        print("*", end="")
+    for j in range((n - i) * 2):
+        print(" ", end="")
+    for j in range(i, 0, -1):
+        print("*", end="")
     print()
 for i in range(n):
-    for j in range(i+1):
-        print("*",end="")
-    for j in range((n-i-1)*2,0,-1):
-        print(" ",end="")
-    for j in range(i+1):
-        print("*",end="")
-    print()
\ No newline at end of file
+    for j in range(i + 1):
+        print("*", end="")
+    for j in range((n - i - 1) * 2, 0, -1):
+        print(" ", end="")
+    for j in range(i + 1):
+        print("*", end="")
+    print()
diff --git a/PatternChalange(PYTHON)/day14.py b/PatternChalange(PYTHON)/day14.py
index 6a8aff6f5081..ae367419736b 100644
--- a/PatternChalange(PYTHON)/day14.py
+++ b/PatternChalange(PYTHON)/day14.py
@@ -1,5 +1,5 @@
-n=5
-for i in range(1,n-1):
-    print("*"*i+" "*(n-i-1)*2+"*"*i)
-for i in range(n-1,0,-1):
-    print("*"*i+" "*(n-i-1)*2+"*"*i)
\ No newline at end of file
+n = 5
+for i in range(1, n - 1):
+    print("*" * i + " " * (n - i - 1) * 2 + "*" * i)
+for i in range(n - 1, 0, -1):
+    print("*" * i + " " * (n - i - 1) * 2 + "*" * i)
diff --git a/PatternChalange(PYTHON)/day15.py b/PatternChalange(PYTHON)/day15.py
index b28575e5b48d..697c1358b9a3 100644
--- a/PatternChalange(PYTHON)/day15.py
+++ b/PatternChalange(PYTHON)/day15.py
@@ -1,5 +1,5 @@
-n=5
-for i in range(1,n):
+n = 5
+for i in range(1, n):
     for j in range(i):
-        print((i+j)%2,end=" ")
-    print()
\ No newline at end of file
+        print((i + j) % 2, end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day16.py b/PatternChalange(PYTHON)/day16.py
index 3bfeb3f5b591..2a1dd0484cc8 100644
--- a/PatternChalange(PYTHON)/day16.py
+++ b/PatternChalange(PYTHON)/day16.py
@@ -1,12 +1,12 @@
-n=5
-for i in range(1,n):
+n = 5
+for i in range(1, n):
     for j in range(n):
-        if j==1:
-            print(" "*(n-i)+"*")
+        if j == 1:
+            print(" " * (n - i) + "*")
         else:
-            print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
-for i in range(1,n+1):
-    if i==1:
-        print(" "*(n-i)+"*")
+            print(" " * (n - i) + "*" + " " * (2 * i - 3) + "*")
+for i in range(1, n + 1):
+    if i == 1:
+        print(" " * (n - i) + "*")
     else:
-        print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file
+        print(" " * (n - i) + "*" + " " * (2 * i - 3) + "*")
diff --git a/PatternChalange(PYTHON)/day17.py b/PatternChalange(PYTHON)/day17.py
index fc633afd06f0..5af968905107 100644
--- a/PatternChalange(PYTHON)/day17.py
+++ b/PatternChalange(PYTHON)/day17.py
@@ -1,6 +1,6 @@
-n=5
-print(" "*(n)+"*"*(n+1))
-for i in range(1,n):
-    #print("*"*n)
-    print(" "*(n-i)+"*"+" "*(n-1)+"*")
-print("*"*(n+1))
\ No newline at end of file
+n = 5
+print(" " * (n) + "*" * (n + 1))
+for i in range(1, n):
+    # print("*"*n)
+    print(" " * (n - i) + "*" + " " * (n - 1) + "*")
+print("*" * (n + 1))
diff --git a/PatternChalange(PYTHON)/day18.py b/PatternChalange(PYTHON)/day18.py
index bf6334d793e9..22ad4a2fb662 100644
--- a/PatternChalange(PYTHON)/day18.py
+++ b/PatternChalange(PYTHON)/day18.py
@@ -1,13 +1,13 @@
-n=6
-a=1
-for i in range(n,0,-1):
-     print(format(" "*(n+1-i),"<1"),end="")
-     for j in range(1,i):
-          print(format(a,"<2"),end="")
-          a+=1
-b=a*2-2
-for i in range(n,1,-1):
-     for j in range(i,1,-1):
-          print(b,end=" ")
-          b-=1
-     print( )
\ No newline at end of file
+n = 6
+a = 1
+for i in range(n, 0, -1):
+    print(format(" " * (n + 1 - i), "<1"), end="")
+    for j in range(1, i):
+        print(format(a, "<2"), end="")
+        a += 1
+b = a * 2 - 2
+for i in range(n, 1, -1):
+    for j in range(i, 1, -1):
+        print(b, end=" ")
+        b -= 1
+    print()
diff --git a/PatternChalange(PYTHON)/day19.py b/PatternChalange(PYTHON)/day19.py
index fca01e3965a5..7d5828a1fb1e 100644
--- a/PatternChalange(PYTHON)/day19.py
+++ b/PatternChalange(PYTHON)/day19.py
@@ -1,23 +1,23 @@
-n=int(input("n="))
-k=(2*n)-1
-l=0
-h=k-1
-val=n
-matrx=[[0 for i in range(k)] for j in range(k)]
+n = int(input("n="))
+k = (2 * n) - 1
+l = 0
+h = k - 1
+val = n
+matrx = [[0 for i in range(k)] for j in range(k)]
 for i in range(n):
-    for j in range(l,h+1):
-        matrx[l][j]=val
-    for j in range(l+1,h+1):
-        matrx[j][i]=val
-    for j in range(l+1,h+1):
-        matrx[h][j]=val
-    for j in range(l+1,h):
-        matrx[j][h]=val
-    l+=1
-    h-=1
-    val-=1
+    for j in range(l, h + 1):
+        matrx[l][j] = val
+    for j in range(l + 1, h + 1):
+        matrx[j][i] = val
+    for j in range(l + 1, h + 1):
+        matrx[h][j] = val
+    for j in range(l + 1, h):
+        matrx[j][h] = val
+    l += 1
+    h -= 1
+    val -= 1
 
 for i in range(k):
     for j in range(k):
-        print(matrx[i][j],end=" ")
-    print()
\ No newline at end of file
+        print(matrx[i][j], end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day2.py b/PatternChalange(PYTHON)/day2.py
index efd588a53aaf..7ec3c92b36ca 100644
--- a/PatternChalange(PYTHON)/day2.py
+++ b/PatternChalange(PYTHON)/day2.py
@@ -1,8 +1,8 @@
-n=5
-for i in range(1,n):
+n = 5
+for i in range(1, n):
     for j in range(i):
-        if j<i:
-            print("*",end=" ")
+        if j < i:
+            print("*", end=" ")
         else:
-            print(" ",end="")
-    print()
\ No newline at end of file
+            print(" ", end="")
+    print()
diff --git a/PatternChalange(PYTHON)/day20_1.py b/PatternChalange(PYTHON)/day20_1.py
index 6187c267b836..de1a2e173c10 100644
--- a/PatternChalange(PYTHON)/day20_1.py
+++ b/PatternChalange(PYTHON)/day20_1.py
@@ -1,5 +1,5 @@
-n=int(input("n="))
-for i in range(n,-1,-1):
-    for j in range(i,-1,-1):
-        print(chr(j+65),end=" ")
-    print()    
\ No newline at end of file
+n = int(input("n="))
+for i in range(n, -1, -1):
+    for j in range(i, -1, -1):
+        print(chr(j + 65), end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day20_2.py b/PatternChalange(PYTHON)/day20_2.py
index e2e884135d8f..b3da45f3f010 100644
--- a/PatternChalange(PYTHON)/day20_2.py
+++ b/PatternChalange(PYTHON)/day20_2.py
@@ -1,5 +1,5 @@
-n=int(input("n="))
-for i in range(n+1,-1,-1):
-    for j in range(i,n+1):
-        print(chr(65+j),end=" ")
-    print()
\ No newline at end of file
+n = int(input("n="))
+for i in range(n + 1, -1, -1):
+    for j in range(i, n + 1):
+        print(chr(65 + j), end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day3.py b/PatternChalange(PYTHON)/day3.py
index 960e78eea8db..ba0afc2ba6ff 100644
--- a/PatternChalange(PYTHON)/day3.py
+++ b/PatternChalange(PYTHON)/day3.py
@@ -1,8 +1,8 @@
-n=5
+n = 5
 for i in range(n):
     for j in range(n):
-        if i<=j:
-            print("*",end=" ")
+        if i <= j:
+            print("*", end=" ")
         else:
-            print("",end="")
-    print()
\ No newline at end of file
+            print("", end="")
+    print()
diff --git a/PatternChalange(PYTHON)/day4.py b/PatternChalange(PYTHON)/day4.py
index 39c86de9f289..133b394bc16b 100644
--- a/PatternChalange(PYTHON)/day4.py
+++ b/PatternChalange(PYTHON)/day4.py
@@ -1,5 +1,5 @@
-n=5
+n = 5
 for i in range(n):
-    for j in range(i+1):
-        print(j+1,end=" ")
+    for j in range(i + 1):
+        print(j + 1, end=" ")
     print()
diff --git a/PatternChalange(PYTHON)/day5.py b/PatternChalange(PYTHON)/day5.py
index bdb96b3900a8..8e5f796bd1c2 100644
--- a/PatternChalange(PYTHON)/day5.py
+++ b/PatternChalange(PYTHON)/day5.py
@@ -1,10 +1,10 @@
-n=5
-t=0
-for i in range(n*2):
-    if i> n:
-        t=2*n-i
+n = 5
+t = 0
+for i in range(n * 2):
+    if i > n:
+        t = 2 * n - i
     else:
-        t=i
+        t = i
     for j in range(t):
-        print("*",end=" ")
-    print()
\ No newline at end of file
+        print("*", end=" ")
+    print()
diff --git a/PatternChalange(PYTHON)/day6.py b/PatternChalange(PYTHON)/day6.py
index 339a9d1f0b40..15e9fe3f7430 100644
--- a/PatternChalange(PYTHON)/day6.py
+++ b/PatternChalange(PYTHON)/day6.py
@@ -1,3 +1,3 @@
-n=5
+n = 5
 for i in range(n):
-    print(" "*(n-1-i),"*"*(i*2+1))
+    print(" " * (n - 1 - i), "*" * (i * 2 + 1))
diff --git a/PatternChalange(PYTHON)/day7.py b/PatternChalange(PYTHON)/day7.py
index 555c00dad400..2358c665c3c3 100644
--- a/PatternChalange(PYTHON)/day7.py
+++ b/PatternChalange(PYTHON)/day7.py
@@ -1,3 +1,3 @@
-n=5
+n = 5
 for i in range(n):
-    print(" "*(n-i-1)," *"*i)
\ No newline at end of file
+    print(" " * (n - i - 1), " *" * i)
diff --git a/PatternChalange(PYTHON)/day8.py b/PatternChalange(PYTHON)/day8.py
index 57aef776dd5c..6409111ea109 100644
--- a/PatternChalange(PYTHON)/day8.py
+++ b/PatternChalange(PYTHON)/day8.py
@@ -1,5 +1,5 @@
-n=5
-for i in range(1,n):
-    print(" "*i,"* "*(n+1-i))
-for i in range(1,n+1):
-    print(" "*((n+1)-i),"* "*i)
\ No newline at end of file
+n = 5
+for i in range(1, n):
+    print(" " * i, "* " * (n + 1 - i))
+for i in range(1, n + 1):
+    print(" " * ((n + 1) - i), "* " * i)
diff --git a/PatternChalange(PYTHON)/day9.py b/PatternChalange(PYTHON)/day9.py
index 12de4cd21ae8..0ac1eb455d71 100644
--- a/PatternChalange(PYTHON)/day9.py
+++ b/PatternChalange(PYTHON)/day9.py
@@ -1,8 +1,8 @@
-n=5
-for i in range(1,n+1):
-    if i==1:
-        print(" "*(n-i)+"*")
-    elif i==n:
-        print("* "*(n))
+n = 5
+for i in range(1, n + 1):
+    if i == 1:
+        print(" " * (n - i) + "*")
+    elif i == n:
+        print("* " * (n))
     else:
-        print(" "*(n-i)+"*"+" "*(2*i-3)+"*")
\ No newline at end of file
+        print(" " * (n - i) + "*" + " " * (2 * i - 3) + "*")