More Problems

• Write a program to check if a string is a substring of another string.
• Write a program to find the first non-repeated character in a string.
• Write a program to create a simple stopwatch using time functions.
• Write a program to implement a simple text-based calculator.
• Write a program to find the second largest number in a list.
• Write a program to calculate the sum of the first n odd numbers.
• Write a program to check if a number is a happy number.
• Write a program to print a diamond pattern using stars.