More Problems

• Write a program to implement the QuickSort algorithm using recursion.
• Write a program to check if a string contains all unique characters without using extra space.
• Write a program to find the longest sequence of consecutive integers in an unsorted array.
• Write a program to implement a simple console-based task management application.
• Write a program to check if a string is a valid date in the format DD/MM/YYYY.
• Write a program to find the longest palindromic substring using the dynamic programming approach.
• Write a program to implement a basic online recipe management system with user ratings.
• Write a program to check if a number is a perfect number using its proper divisors.