More Problems

• Write a function to count all possible combinations of pairs in an array that sum to a given value using hashing.
• Implement a program to find the longest substring in a string that is a permutation of another string using hashing.
• Create a function to find the number of unique triplets in an array that add up to zero using hashing.
• Write a program to find the maximum length of a contiguous subarray with a sum of 0 using a hash map.
• Given two arrays, determine if there is a one-to-one mapping between their elements using hashing.
• Implement a function to find the longest subsequence in an array that can be formed by deleting some elements using hashing.
• Create a program to check if two strings can be made equal by swapping only two characters using hashing.
• Write a function to find the frequency of each element in an array using hashing and return the maximum frequency.