More Problems

• Create a program to check if a string can be formed from the characters of another string using hashing.
• Write a function to find the longest substring with at least one repeating character using hashing.
• Given a string, write a program to find all unique characters using a hash set.
• Create a function that checks if a string can be rearranged to form a valid word using hashing.
• Write a program to determine if a list contains any pairs of integers that are equal using a hash set.
• Implement a function to find the longest palindrome substring in a given string using hashing.
• Create a program to count the total number of distinct elements in a 2D array using hashing.
• Write a function to find the first character that occurs more than twice in a string using a hash map.