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Topic: Hashing Problem / Level: beginner
Problem:
Create a function that finds all elements that appear more than once in an array using a hash map.
More Problems
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.
Create a function that returns the frequency of each word in a paragraph using hashing.
Write a program to check if a given string has balanced parentheses using a hash map.
Given two arrays, implement a function to find their symmetric difference using hashing.
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