More Problems

• Create a function that checks if a string contains all the letters of the alphabet using hashing.
• Write a program to find the first character that appears an odd number of times using hashing.
• Implement a function to count the occurrences of a specific word in a sentence using a hash map.
• Create a program to find the longest substring that contains exactly k distinct characters using hashing.
• Write a function to check if two strings can be made identical by swapping characters using hashing.
• Given an array, write a program to find the first unique element using hashing.
• Implement a function to find the longest palindromic substring in a given string using hashing.
• Create a program to count the frequency of letters in a string using a hash table.