Hacktober

Python/List/interchangefirstlastele.py

@@ -0,0 +1,18 @@
+# Python3 program to swap first
+# and last element of a list
+
+# Swap function
+def swapList(newList):
+	size = len(newList)
+
+	# Swapping
+	temp = newList[0]
+	newList[0] = newList[size - 1]
+	newList[size - 1] = temp
+
+	return newList
+
+# Driver code
+newList = [12, 35, 9, 56, 24]
+
+print(swapList(newList))

Python/List/swap2elements.py

@@ -0,0 +1,14 @@
+# Python3 program to swap elements
+# at given positions
+
+# Swap function
+def swapPositions(list, pos1, pos2):
+
+	list[pos1], list[pos2] = list[pos2], list[pos1]
+	return list
+
+# Driver function
+List = [23, 65, 19, 90]
+pos1, pos2 = 1, 3
+
+print(swapPositions(List, pos1-1, pos2-1))

Python/Matrix/add2matrix.py

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+# Program to add two matrices using nested loop
+
+X = [[1,2,3],
+	[4 ,5,6],
+	[7 ,8,9]]
+
+Y = [[9,8,7],
+	[6,5,4],
+	[3,2,1]]
+
+
+result = [[0,0,0],
+		[0,0,0],
+		[0,0,0]]
+
+# iterate through rows
+for i in range(len(X)):
+# iterate through columns
+	for j in range(len(X[0])):
+		result[i][j] = X[i][j] + Y[i][j]
+
+for r in result:
+	print(r)

Python/Matrix/multipy2matrix.py

@@ -0,0 +1,28 @@
+# Program to multiply two matrices using nested loops
+
+# take a 3x3 matrix
+A = [[12, 7, 3],
+	[4, 5, 6],
+	[7, 8, 9]]
+
+# take a 3x4 matrix
+B = [[5, 8, 1, 2],
+	[6, 7, 3, 0],
+	[4, 5, 9, 1]]
+
+result = [[0, 0, 0, 0],
+		[0, 0, 0, 0],
+		[0, 0, 0, 0]]
+
+# iterating by row of A
+for i in range(len(A)):
+
+	# iterating by column by B
+	for j in range(len(B[0])):
+
+		# iterating by rows of B
+		for k in range(len(B)):
+			result[i][j] += A[i][k] * B[k][j]
+
+for r in result:
+	print(r)

Python/string/checkpalindrome .py

@@ -0,0 +1,14 @@
+# function which return reverse of a string
+
+def isPalindrome(s):
+	return s == s[::-1]
+
+
+# Driver code
+s = "malayalam"
+ans = isPalindrome(s)
+
+if ans:
+	print("Yes")
+else:
+	print("No")

Python/string/reversewords.py

@@ -0,0 +1,16 @@
+# Function to reverse words of string
+
+def rev_sentence(sentence):
+
+	# first split the string into words
+	words = sentence.split(' ')
+
+	# then reverse the split string list and join using space
+	reverse_sentence = ' '.join(reversed(words))
+
+	# finally return the joined string
+	return reverse_sentence
+
+if __name__ == "__main__":
+	input = 'geeks quiz practice code'
+	print (rev_sentence(input))

README.md

@@ -1 +1,3 @@
-# DS
+# REPOSITORY TO HOLD PROGRAMS FOR VARIOUS DATA STRUCTURES
+
+Pick a language of your choice and if you don't find a data structure implemented in the language feel free to contribute

certificate-generator/Manas Kumar.txt

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+
+  ----------------------------------------------------------------------------
+  |                    Certificate of Completion                             |
+  |                                                                          |
+  |                                                                          |
+  | This is to certify that Manas Kumar has successfully completed the          |
+  |              course in Micro Biology.                                    |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  | ______________________                              _______________      |
+  | Signature of Instructor                             Signature of HOD     |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+   --------------------------------------------------------------------------- 
+

certificate-generator/Niraj Kumar.txt

@@ -0,0 +1,20 @@
+
+  ----------------------------------------------------------------------------
+  |                    Certificate of Completion                             |
+  |                                                                          |
+  |                                                                          |
+  | This is to certify that Niraj Kumar has successfully completed the          |
+  |              course in Micro Biology.                                    |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  | ______________________                              _______________      |
+  | Signature of Instructor                             Signature of HOD     |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+   --------------------------------------------------------------------------- 
+

certificate-generator/Prakash Kumar.txt

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+
+  ----------------------------------------------------------------------------
+  |                    Certificate of Completion                             |
+  |                                                                          |
+  |                                                                          |
+  | This is to certify that Prakash Kumar has successfully completed the          |
+  |              course in Micro Biology.                                    |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  | ______________________                              _______________      |
+  | Signature of Instructor                             Signature of HOD     |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+   --------------------------------------------------------------------------- 
+

certificate-generator/README.md

@@ -0,0 +1,21 @@
+## CERTIFICATE GENERATOR
+
+
+
+A python script to read names from a txt file and generate txt files in the same directory
+
+
+
+#### HOW TO RUN THE SCRIPT
+
+- extract the zip file
+
+- open the terminal and change directory to extracted zip folder
+
+- write comma separated names in input.txt ( a sample of it is added here )
+
+- in the terminal type `python -u main.py`
+
+- if the input file exists and and it has names txt files with name as file name will be generated
+
+- for the sample input files, output certificates are attached

certificate-generator/input.txt

@@ -0,0 +1 @@
+Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar,Prakash Kumar,Manas Kumar,Niraj Kumar

certificate-generator/main.py

@@ -0,0 +1,49 @@
+''' 
+authored by palak thapar 
+'''
+
+import os
+names = []
+input_file = 'input.txt'
+try:
+
+    if os.stat(input_file).st_size == 0:  # check for an empty file
+        print('Sorry, the file {input_file} is empty'.format(input_file=input_file))
+    else:
+        for line in open(input_file, 'r'):
+            for name in line.strip().split(','):
+                names.append(name)
+except FileNotFoundError: # check for a non-existing file
+    msg = 'Sorry, the file {input_file} does not exist.'.format(input_file=input_file)
+    print(msg)
+
+for name in names: 
+    with open(name + '.txt', 'w') as wp:
+        print("generating certificate for {name}".format(name=name))
+        content = \
+            '''
+  ----------------------------------------------------------------------------
+  |                    Certificate of Completion                             |
+  |                                                                          |
+  |                                                                          |
+  | This is to certify that {name} has successfully completed the          |
+  |              course in Micro Biology.                                    |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  | ______________________                              _______________      |
+  | Signature of Instructor                             Signature of HOD     |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+  |                                                                          |
+   --------------------------------------------------------------------------- 
+   '''
+        wp.write(content.format(name=name)) # writing the content to each file
+        wp.close() # closing the file 
+
+    # a check for success
+    print("successfully generated certificate for {name}".format(name=name))
+    print()

print("hello world").py

@@ -0,0 +1,2 @@
+print("hello world")
+print("Hacktoberfest20210908868")