More Problems

• Write a program to check if a string is a valid URL format using regular expressions.
• Write a program to find the longest consecutive sequence of numbers in an unsorted array.
• Write a program to implement a basic job scheduling system with deadlines.
• Write a program to check if a number can be expressed as a sum of two squares.
• Write a program to find the longest substring of unique characters in a string.
• Write a program to implement a simple memory allocator with a pool of memory.
• Write a program to check if two strings are isomorphic.
• Write a program to find the sum of all unique elements in an array.