More Problems

• Write a program to check if two strings can be made equal with a limited number of character changes.
• Write a program to find the total number of distinct paths in a grid.
• Write a program to implement a simple online store with user reviews and ratings.
• Write a program to check if a number can be expressed as the sum of two squares.
• Write a program to find the first non-repeating word in a string.
• Write a program to implement a basic online food delivery system.
• Write a program to check if a string is a valid palindrome using pointers.
• Write a program to find the longest substring that contains at most k distinct characters.