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FactSet

123+ posts

Check for Power of 2

Last Updated: 21 March 2026

Given a positive integer n, check whether it is a power of 2 or not.Examples: Input : n = 16Output : trueExplanation: 24 = 16 Input : n = 42Output : falseExplanation: 42...read more

Majority Element

Last Updated: 28 March 2026

Given an array arr[] of size n, find the element that appears more than ⌊n/2⌋ times. If no such element exists, return -1.Examples:Input: arr[] = [1, 1, 2, 1, 3, 5, 1]Outp...read more

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Majority Element

Moore's Voting Algorithm

Two Sum - Pair with given Sum

Last Updated: 17 September 2026

Given an array arr[] of n integers and a target value, check if there exists a pair whose sum equals the target. Examples: Input: arr[] = [0, -1, 2, -3, 1], target = -2Out...read more

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Amazon-Question

CarWale-Question

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