More Problems

• 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.
• Write a program to implement a basic chat application using sockets.
• Write a program to check if a number is a perfect cube using binary search.
• Write a program to find the longest increasing subsequence using patience sorting.