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Algorithm Interview Archive

In this post, we will see how to find peak element in the array. Problem Given an array of integers. find the peak element in the array. Peak Element is the element of the array …

In this post, we will see how to count number of 1’s in sorted binary array. Problem Print number of 1’s in a given sorted Binary Array. For eg:- int arr = {0,0,0,1,1,1,1}; output : …

In this post, we will see how to find the first repeating element in array of integers. Problem Find the first repeating element in array of integers. For example: Input: array = {10, 7, 8, …

In this post, we will see how to find the longest common substring in java. Program Given two String, find longest common substring. For example: String 1: Java2blog String 2: CoreJavaTutorial Longest common subString is: …

In this post, we will see how to print the maximum occurring character in a String. Problem Print maximum occurring character in a String For example: String 1: java2blog tutorial Character: a has occurred maximum …

In this post, we will see how to print all subarrays of given array. Problem Print all print all subarrays of given array. For example: If array is {1,2,3} then you need to print {1}, …

In this post, we will see how to print all paths from top left to bottom right of MxN matrix. Problem We need to print all paths from top left to bottom right of MxN matrix. …

In this post, we will see how to print numbers from 1 to N without using loop. Problem Print number from 1 to N without using any loop. N=10 Output: 1 2 3 4 5 …

In this post, we will see how to find all subsets of set or power set in java. Problem Given a set of distinct integers, arr, return all possible subsets (the power set). For example: Input: nums …

In this post, we will see how to find all permutations of the array in java. Problem 1 Given array of distinct integers, print all permutations of the array. For example: array : Permuations are …