Page 527 - Computer Science V2.0 Class 11

print(f"Number of 'm' occurrences: {mCount}")
elif choice == '3':

digitCount = countDigits(string)
print(f"Number of digits: {digitCount}")
elif choice == '4':
modifiedString = replaceSpaces(string)
print(f"String with spaces replaced by '*': {modifiedString}")

elif choice == '5':
lowercaseString = convertToLowercase(string)
print(f"String converted to lowercase: {lowercaseString}")
elif choice == '6':
titleCaseString = convertToTitleCase(string)

print(f"String converted to title case: {titleCaseString}")
elif choice == '7':
print("Exiting the program.")
break
else:

print("Invalid choice. Please select a valid option.")
Program 35: Write a program that accepts two strings and checks whether the second string is a substring (forms part)
of the first string. If yes, the program should display the starting index that marks the beginning of the second string;
otherwise, it should display 'Substring DOES NOT exist.'

Ans. def findSubstring(string1, string2):
'''
Objective : To check whether a string is substring of another and tell its
index
Input Parameter : string1,string2 - string
Return Value : index – numeric value, string

'''
index = string1.find(string2)
if index != -1:
return index
else:

return "Substring DOES NOT exist."

string1 = input("Enter the first string: ")
string2 = input("Enter the second string: ")
result = findSubstring(string1, string2)

print(result)

Practical 513