More Problems

• Create a program to check if a string can be rearranged to form a valid palindrome using hashing.
• Write a function to find the first unique integer in an array using a hash map.
• Implement a function to check if a string can be transformed into a valid number using hashing.
• Given a string, write a program to find the total number of vowels and consonants in a string using hashing.
• Create a program to check if two strings are isomorphic using hashing.
• Write a function to find the longest substring that contains exactly one repeating character using hashing.
• Given a string, implement a function to find the longest substring with all distinct characters using hashing.
• Create a program to check if a string is a valid identifier using hashing.