• 01 November

    Find the local minima in array

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find the local minima in the array. Problem An element is local minima if it is less than its neighbors. int [] arr = {10, 5, 3, 6, 13, 16, […]

  • 31 October

    Edit Distance Problem

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see edit distance problem in java. Sometimes this problem also referred as "String distance replacement in java" Problem Given two strings string1 and string2, String1 is to be converted into String2 with the […]

  • 22 October

    Sliding Window Maximum in java

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see about Sliding Window Maximum in java Problem Given an Array of integers and an Integer k, Find the maximum element of from all the contiguous subarrays of size K. For eg : […]

  • 20 October

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

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to count number of occurrences (or frequency) of each element in a sorted array Problem Given a Sorted Array of integers containing duplicates. Find the frequency of every unique element present […]

  • 20 October

    Find subarrays with given sum in an array.

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find subarrays with given sum in an array. Problem Given an Array of non negative Integers and a number. You need to print all the starting and ending indices of […]

  • 15 October

    Count 1’s in sorted Binary Array

    If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. 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 : 4 int[] arr […]

  • 09 October

    Find first repeating element in an array of integers

    If you want to practice data structure and algorithm programs, you can go through 100+ data structure and algorithm programs. 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, […]

  • 17 February

    Check if Array Elements are Consecutive

    If you want to practice data structure and algorithm programs, you can go through 100+ data structure and algorithm programs. In this post, we will see how to check if array elements are consecutive. Problem Given an array, we need to check if array contains consecutive elements. For example: Input: array[] = {5, 3, 4, […]

  • 30 September

    Longest common substring

    If you want to practice data structure and algorithm programs, you can go through 100+ data structure and algorithm programs. 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: […]