More Problems

• Implement a function to count the number of valid brackets in a string using a hash map.
• Write a program to find the frequency of each word in a sentence ignoring case using hashing.
• Create a function that checks if a string contains a specific character using hashing.
• Given a list of integers, write a program to find the count of pairs with a specific difference using hashing.
• Write a function to find the total number of unique words in a given text using hashing.
• Create a program that checks if two strings can be made identical by swapping characters using hashing.
• Implement a function to count the number of palindromic substrings in a given string using hashing.
• Write a program to find the first character that appears twice in a string using a hash map.