Counting frequencies of array elements
Hashing DSA practice problem on Onlearn.
Difficulty: easy.
Topics: Finding the frequency of each element in an array, Arrays, Loops, Time Complexity, Space Complexity, Map, Hashing, Frequency Counting, complexity analysis, frequency counting, general programming, hash map, array traversal, Array Traversal & Indexing, Hashing & Hash Maps, Problem Solving Techniques.
Problem Statement Given an array of integers, find the frequency of each element in the array. Input Specification The first line contains an integer N, the size of the array. The second line contains N space separated integers representing the elements of the array. Output Specification For each unique element in the array, print the element and its frequency, separated by a space. The order of output for elements does not matter. Constraints No explicit constraints were provided in the original content beyond example array sizes. Assume standard integer ranges and array sizes suitable for competitive programming (e.g., N up to 10^5, elements up to 10^9). Sample Test Cases Sample Input 1 Sample Output 1 Sample Input 2 Sample Output 2