bachiri

public class LengthLargestSubArray {
    public static void main(String[] args) {
        int arr[] = {1, 2, 3, 4, 5, 6, 10, 8, 7, 9};
        System.out.println("Length of the largest subArray is " + lengthLargestSubArray(arr));
    }

    private static int lengthLargestSubArray(int[] arr) {
        Arrays.sort(arr);
        int counter = 0;
        int maxCounter = 0;

bachiri

public class SortCharactersByFrequency {
    public static void main(String[] args) {
        System.out.println(frequencySort("Leetcode"));
    }

    public static String frequencySort(String s) {
        HashMap<Character, Integer> map = new HashMap<>();
        for (int i = 0; i < s.length(); i++) {
            map.put(s.charAt(i), map.getOrDefault(s.charAt(i), 0) + 1);
        }

bachiri

public class MergekSortedLists {
    public static void main(String[] args) {

        ListNode listNode = new ListNode(1);
        listNode.next = new ListNode(4);
        listNode.next.next = new ListNode(5);

        ListNode secondListNode = new ListNode(1);
        secondListNode.next = new ListNode(3);
        secondListNode.next.next = new ListNode(4);

bachiri

public class SlidingWindowMaximum {

    public static void main(String[] args) {
        int[] nums = {1, 3, -1, -3, 5, 3, 6, 7};
        System.out.println("Maxs are " + Arrays.toString(maxSlidingWindow(nums, 3)));
    }

    public static int[] maxSlidingWindow(int[] nums, int k) {
        List<Integer> result = new ArrayList<>();
        for (int i = 0; i < nums.length; i++) {

bachiri

import java.util.LinkedList;

public class GraphAdjacencyListRepresentation {
    public static void main(String[] args) throws GraphRep.GraphException {
       GraphRep graphRep = new GraphRep(6);
        graphRep.addVertexTo(new GraphNode(4), new GraphNode(5));
        graphRep.addVertexTo(new GraphNode(4), new GraphNode(1));
        graphRep.addVertexTo(new GraphNode(4), new GraphNode(6));

bachiri

package codility.stackandqueues;

import java.util.Stack;

//Codility Lesson 7
//Stacks and Queues
//Problem  :StoneWall
//Link : https://app.codility.com/programmers/lessons/7-stacks_and_queues/
public class StoneWall {
    public static void main(String[] args) {