added 2 string programs

Author: abin-m

Extracting_Numbers_from_textString.py

@@ -0,0 +1,40 @@
+# Given  Sentence
+sentence="Ramu have 150 Apples and 10 bananas"
+sentence2="Ramu Sell 1 Apple at 15.5 Rupees"
+
+list1=[]
+list2=[]
+
+sum=0
+sum2=0
+# split is used to split sentence
+# This code is not fit for Decimal Nos.
+
+print("---------------EXTRACTING NUMBER FROM STRING---------------\n")
+for word in sentence.split():
+    if word.isdigit():
+        list1.append(word)
+       
+print("New List",list1)
+
+
+
+# Calculating the SUM
+for i in list1:
+    sum=sum+int(i)
+
+print("No. without Fraction \nsum=",sum,"\n")
+
+# If Decimal Numbers occured in the Sentence
+for word2 in sentence2.split():
+    if not word2.isalpha():
+        list2.append(word2)
+
+print("New List",list2)
+
+# Calculating the SUM
+for j in list2:
+    sum2=sum2+float(j)
+
+print("No. with Fraction \nsum=",sum2)
+print("-----------------------------------------------------------")

substring.py

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+def substring(str1,n):
+    for i in range(0,n):
+        for j in range(i+1,n+1):
+            # Printing the substrings using slicing
+            # Suppose we have str1="Hello" Str1[0:1] will print "H" 
+            # Str1[1:2] will print "He"
+            # Str1[1:3] will print "Hel"
+            # Str1[1:4] will print "Hell"
+            # Str1[1:5] will print "Hello"
+            # then i will increment i=2
+            # Str1[2:3] will print "e"
+            # Str1[2:4] will print "el"
+            # And So On
+            print(str1[i:j])
+
+
+str1 = input("Enter a String:")
+n=len(str1)
+substring(str1,n)