More Problems

• Implement a program that checks for a subarray with a sum equal to zero using a hash map.
• Write a function to find the first duplicate number in an array using hashing.
• Create a program to check if a string is a permutation of another string using a hash map.
• Given a list of words, find all pairs of words that are anagrams using hashing.
• Write a program that finds the maximum frequency of any element in an array using a hash map.
• Implement a function to find all unique triplets in an array that sum to a target value using hashing.
• Create a program that checks if two arrays contain the same elements (ignoring order) using hashing.
• Write a function to determine the number of valid Sudoku rows, columns, and boxes using a hash table.