More Problems

• Write a program to check if a string can be formed from another string by adding characters using hashing.
• Create a function to determine if a string is a valid number using hashing.
• Given two strings, write a function to find the number of characters that need to be changed to make them equal using hashing.
• Write a program to count the total number of spaces in a string using hashing.
• Create a function that checks if two strings have the same character frequency using hashing.
• Implement a function to find the first non-repeating integer in an array using a hash map.
• Write a program to find the frequency of each unique word in a book using hashing.
• Create a function that returns the character with the maximum frequency in a string using a hash map.