More Problems

• Implement a function to count the occurrences of each letter in the English alphabet in a string using a hash map.
• Create a program to find the maximum frequency of any character in a string using a hash map.
• Write a function to check if two strings can be rearranged to form a valid word using hashing.
• Given an array, write a program to count the number of odd numbers using a hash set.
• Implement a function to find the first character that appears twice in a string using a hash map.
• Create a program to check if a string can be rearranged to form a valid palindrome using hashing.
• Write a function to find the total number of unique words in a paragraph using hashing.
• Given a string, write a program to check if it is a valid identifier using hashing.