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Topic: Hashing Problem / Level: beginner
Problem:
Write a program to find the number of distinct elements in an array using a hash set.
More Problems
Given a string, write a function to check if it contains all unique characters using a hash set.
Implement a function that returns the longest substring without repeating characters using hashing.
Write a program to find the intersection of two arrays using a hash map.
Create a function that checks if a given string is a palindrome using a hash map.
Write a program to group anagrams from a list of strings using a hash table.
Given a list of integers, find the maximum element using a hash map to track the counts.
Implement a function to find the number of times a given integer appears in an array using hashing.
Create a program that counts the vowels in a given string using a hash table.
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