More Problems

• Write a program to check if a string is a valid time in the format HH:MM
• Write a program to find the sum of all odd numbers in a range.
• Write a program to implement a simple online quiz application with random questions.
• Write a program to check if a number is a prime number using a function.
• Write a program to implement the Rabin-Karp algorithm for substring matching.
• Write a program to check if a string can be segmented into valid dictionary words.
• Write a program to find the smallest substring containing all characters of another string.
• Write a program to implement the depth-first search (DFS) algorithm for graph traversal.