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Minimum moves required to change position with the given operation

Last Updated: 02 June 2021

Given two integers S and T and an array arr that contains elements from 1 to N in unsorted fashion. The task is to find the minimum number of moves to move Sth element to ...read more

DSA

limited-range-elements

Generate a sequence with the given operations

Last Updated: 07 December 2022

Given a stringSwhich contains onlyI(increase) andD(decrease). The task is to return any permutation of integers [0, 1, ..., N] where N ? Length of S such that for all i = ...read more

Strings

DSA

limited-range-elements

programming-puzzle

Maximum number of fixed points using atmost 1 swap

Last Updated: 06 September 2022

Given a permutation of N elements (Elements are in range 0 to N-1). A fixed point is an index at which the value is same as the index (That is, a[i]=i). You are allowed to...read more

DSA

Arrays

array-rearrange

limited-range-elements

Queries for number of elements on right and left

Last Updated: 06 February 2023

Given Q queries of three types where every query consists of a number.Add element num on the leftAdd element num on the rightPrint the number of elements to the right an l...read more

DSA

limited-range-elements

Constructive Algorithms

Kth Smallest sum of continuous subarrays of positive numbers

Last Updated: 31 March 2023

Given an sorted array of positive numbers our tasks is to find the kth smallest sum of continuous subarray. Examples:Input : a[] = {1, 2, 3, 4, 5, 6} k = 4Output : 3 Expla...read more

Technical Scripter 2018

DSA

Binary Search

prefix-sum

limited-range-elements

Minimum array element changes to make its elements 1 to N

Last Updated: 08 September 2022

Suppose you are given an array with N elements with any integer values. You need to find the minimum number of elements of the array which must be changed so that array ha...read more

limited-range-elements

cpp-unordered_map

Longest chain of arr[i], arr[arr[i]], .. without repetition

Last Updated: 30 August 2022

Given an array of size n such that elements in array are distinct and in range from 0 to n-1. We need to find out length of the longest chain {arr[i], arr[arr[i]], arr[arr...read more

Misc

DSA

Arrays

limited-range-elements

graph-cycle

Minimum number of adjacent swaps for arranging similar elements together

Last Updated: 26 August 2022

Given an array of 2 * N positive integers where each array element lies between 1 to N and appears exactly twice in the array. The task is to find the minimum number of ad...read more

DSA

array-rearrange

limited-range-elements

Duplicates in an array in O(n) time and by using O(1) extra space | Set-3

Last Updated: 11 July 2025

Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times. Find these repeating numbers in O(n) and using...read more

Searching

DSA

Arrays

limited-range-elements

Sorting array with conditional swapping

Last Updated: 17 August 2022

Given an array arr containing elements from [1...to n]. Each element appears exactly once in the array arr. Given an string str of length n-1. Each character of the string...read more

limited-range-elements

Sort an array which contain 1 to n values

Last Updated: 02 June 2026

Given an array arr[] of size n consisting of distinct integers from 1 to n. Your task is to sort the array without using extra space.Examples : Input: arr[] = [2, 1, 5, 4,...read more

limited-range-elements

Sort an array containing two types of elements

Last Updated: 16 November 2024

This problem appears in multiple forms as mentioned below. If we take a closer look at the below problems, we can notice that the problem is mainly a variation of partitio...read more

DSA

limited-range-elements

Only Repeating From 1 To n-1

Last Updated: 19 April 2025

Given an array arr[] of size n filled with numbers from 1 to n-1 in random order. The array has only one repetitive element. The task is to find the repetitive element.Exa...read more

limited-range-elements

cpp-unordered_set

Check if the array is beautiful

Last Updated: 03 May 2024

Given an integer n and an array of size n check if it satisfies following conditions:-All elements of array must lie between 1 to n.Array must NOT be sorted in ascending o...read more

Misc

DSA

Arrays

limited-range-elements

Find the one missing number in range

Last Updated: 28 October 2022

Given an array of size n. It is also given that range of numbers is from smallestNumber to smallestNumber + n where smallestNumber is the smallest number in array. The arr...read more

limited-range-elements

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