Searching

1.7k+ posts

Last Updated: 11 January 2023

Given an array, find the most frequent element in it. If there are multiple elements that appear a maximum number of times, print any one of ...read more

Misc

Searching

Sorting

Hash

DSA

Two Pointers Technique

Last Updated: 14 May 2024

Two pointers is really an easy and effective technique that is typically used for searching pairs in a sorted array.Given a sorted array A ( ...read more

Arrays

Searching

Technical Scripter

two-pointer-algorithm

DSA

Introduction to Linear Search Algorithm

Last Updated: 06 June 2024

Linear Search Algorithm is defined as a sequential search algorithm that starts at one end and goes through each element of a list until the...read more

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K’th Smallest/Largest Element in Unsorted Array

Last Updated: 31 May 2024

Given an array arr[] of size N and a number K, where K is smaller than the size of the array. Find the K'th smallest element in the given ar ...read more

Program to find largest element in an Array

Last Updated: 13 September 2023

Given an array arr[] of size N, the task is to find the largest element in the given array.Examples:Input: arr[] = {10, 20, 4}Output: 20Expl ...read more

Basic Coding Problems

Binary Search Algorithm - Iterative and Recursive Implementation

Last Updated: 06 May 2024

Binary Search Algorithm is a searching algorithm used in a sorted array by repeatedly dividing the search interval in half. The idea of bina...read more

Given Array of size n and a number k, find all elements that appear more than n/k times

Last Updated: 18 April 2023

Given an array of size n and an integer k, find all elements in the array that appear more than n/k times.Examples:Input: arr[] = {3, 1, 2, ...read more

Arrays

Searching

DSA

Find a peak element which is not smaller than its neighbours

Last Updated: 31 May 2024

Given an array arr of n elements that is first strictly increasing and then maybe strictly decreasing, find the maximum element in the array ...read more

Median of two Sorted Arrays of Different Sizes

Last Updated: 02 May 2024

Given two sorted arrays, a[] and b[], the task is to find the median of these sorted arrays, where N is the number of elements in the first ...read more

Binary Search

Divide and Conquer

Searching

statistical-algorithms

median-finding

DSA

Longest Increasing Subsequence (LIS)

Last Updated: 11 June 2024

Given an array arr[] of size N, the task is to find the length of the Longest Increasing Subsequence (LIS) i.e., the longest possible subseq...read more

Count number of occurrences (or frequency) in a sorted array

Last Updated: 06 May 2024

Given a sorted array arr[] of size N and a number X, you need to find the number of occurrences of X in given array.Note: Expected time comp ...read more

Print K largest(or smallest) elements in an array

Last Updated: 29 April 2024

Given an array arr[] of size N, the task is to printing K largest elements in an array. Note: Elements in output array can be in any orderEx ...read more

Maximum and minimum of an array using minimum number of comparisons

Last Updated: 23 May 2024

Given an array of size N. The task is to find the maximum and the minimum element of the array using the minimum number of comparisons.Examp ...read more

Search an element in a sorted and rotated Array

Last Updated: 14 June 2024

Given a sorted and rotated array arr[] of size N and a key, the task is to find the key in the array.Note: Find the element in O(logN) time ...read more

Find the Missing Number

Last Updated: 19 June 2024

Given an array arr[] of size N-1 with integers in the range of [1, N], the task is to find the missing number from the first N integers.Note ...read more

limited-range-elements

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