# Array

- 28 March
### Sort an array of 0s, 1s and 2s

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 sort an array of 0s, 1s and 2s.We have already seen a post on sort 0s and 1s in an array. Problem Given an array containing zeroes, ones and twos […]

- 04 March
### Check if it is possible to reach end of given Array by Jumping

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. Problem Given an array with positive integers as elements indicating the maximum length of a jump which can be made from any position in the array. Check if it is possible to have a jumps combination […]

- 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, […]

- 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 […]

- 14 October
### Find peak element in the array

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 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 […]

- 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, […]

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