DSA

20.4K+ posts

Last Updated: 23 August 2026

Given the areas of Small, Medium, and Large pizzas as s, m, and l units, and their respective costs as cs, cm, and cl, find the minimum cost required to buy pizzas whose t...read more

DSA

Check if Two Pairs with Same Product Exist in Array

Last Updated: 21 August 2026

Given an array arr[] of distinct positive integers, find if there exist two pairs of elements [a, b] and [c, d] such that the product of the first pair is equal to the pro...read more

DSA

Prime Factors Powers Sum for a Range

Last Updated: 22 August 2026

Given two integers a and b, for every integer x in the range [a, b] (inclusive), compute the sum of the exponents of the prime factors in the prime factorization of x. Ret...read more

DSA

Max Subarray Sum for Values Limited by K

Last Updated: 22 August 2026

Given an array arr[] and an integer k, the task is to find the maximum sum of a subarray such that every element in the chosen subarray is less than or equal to k.Examples...read more

DSA

Tidy Number

Last Updated: 21 August 2026

Given an integer n, check whether it is a tidy number. A number is called tidy if its digits are in non-decreasing order from left to right. Examples:Input: n = 1234Output...read more

DSA

Bitwise OR of Multiples in an Array

Last Updated: 21 August 2026

Given an array arr[] comprising of n non-zero, positive integers and an integer x, find the bitwise OR of all multiples of x present in the array.The result of OR operatio...read more

DSA

Find Nth digit in sequence

Last Updated: 20 August 2026

Given the infinite sequence formed by concatenating the non-negative integers: 0123456789101112131415... . The sequence is 0-indexed, i.e., the 0th digit is 0, the 1st dig...read more

DSA

Maths

MATHEMATICS

Max Missing Count with Sum Limited to K

Last Updated: 19 August 2026

Given an array arr[] of integers and an integer k. You need to find the maximum number of distinct positive integers that can be selected such that:The selected integers a...read more

DSA

Smallest Rearrangement with No "cba" Subsequence

Last Updated: 18 August 2026

Given a string s of lowercase English letters, rearrange the characters of s such that it does not contain "cba" as a subsequence. Among all valid rearrangements, return ...read more

DSA

Find the safe position

Last Updated: 18 August 2026

Given a group of n soldiers standing in a circle, numbered from 1 to n. Starting from soldier 1, every alternate soldier is eliminated in a clockwise direction - soldier 1...read more

DSA

Compute the values a^b and m^n

Last Updated: 17 August 2026

Given four integers a, b, m, and n. Compute the values ab and mn. Return 1 if ab is greater, 0 if mn is greater, or -1 if both values are equal.Examples:Input: a = 2, b = ...read more

DSA

Partition into Two Halves with Minimum Sum Diff

Last Updated: 19 August 2026

Given an array arr[] of n integers, divide it into two subsets s1 and s2 such that the difference between the sums of the two subsets is minimized. Return the minimum poss...read more

DSA

Count Smaller in an Array

Last Updated: 14 August 2026

Given an unsorted array arr[]. Find the count of elements less than or equal to the given element x.Examples:Input: x = 9, arr[] = [10, 1, 2, 8, 4, 5] Output: 5Explanation...read more

DSA

Unit Digit in a Product

Last Updated: 17 August 2026

Given 6 numbers a, b, c, d, e, f. Find the last digit of (ab) × (cd) × (ef). Examples:Input: a = 3, b = 66, c = 6, d = 41, e = 7, f = 53Output: 8Explanation: The last digi...read more

DSA

Count Integers Whose OR with x Is Greater Than x

Last Updated: 17 August 2026

Given an integer x, count the number of integers a such that 1 ≤ a ≤ x and (a OR x) x.Examples:Input: x = 10Output: 7 Explanation: In the range [1, 10] if the OR is taken...read more

DSA

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