More Problems

• Create a program to find the maximum product of three numbers in an array using hashing.
• Implement a function to count the number of valid combinations of parentheses using hashing.
• Given a string, write a program to check if it is a valid identifier using hashing.
• Write a function to find the frequency of elements in a list using a hash map.
• Create a program to check if a string can be rearranged to form a valid word using hashing.
• Implement a function to find the first unique integer in an array using a hash map.
• Given a string, write a program to count the total number of unique characters in a string using hashing.
• Write a function to find the longest substring that is an anagram of another substring using hashing.