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Topic: Hashing Problem / Level: beginner
Problem:
Write a function that checks if a given array contains duplicate elements using a hash set.
More Problems
Given two strings, implement a function to check if one string is a rotation of the other using hashing.
Write a program to determine if two arrays have any elements in common using a hash set.
Create a function that finds all elements that appear more than once in an array using a hash map.
Implement a function to find the minimum element in an array using a hash map for tracking indices.
Write a program to return the first repeated character in a string using a hash table.
Create a function that checks if all characters in a string are unique using a hash set.
Given a list of integers, write a function to find the second largest number using hashing.
Implement a program to count the number of words in a sentence using a hash map.
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