stephen-maina

import java.util.BitSet;
import java.util.stream.IntStream;
class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        BitSet bs=new BitSet(A.length+1);
        //IntStream.of(A).filter(p->p==1).forEach(i->bs.set(i));
        for(int set=0;set<A.length;set++){
            if(A[set]==1){                
            bs.set(set,true);

stephen-maina

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int count=0;
        int pair=0;
        for(int index=0;index<A.length;index++){
            if(A[index]==0){
                count++;
            }else{
                pair+=count;

stephen-maina

class Solution {
    public int solution(int A, int B, int K) {
        // write your code in Java SE 8
        int first=0;
        int last=0;
        if(A%K==0){
            first=A/K;
        }else{
            first=(A-A%K+K)/K;            
        }

stephen-maina

import java.util.Arrays;
import java.util.HashMap;
class Solution {
    public int[] solution(String S, int[] P, int[] Q) {
        // write your code in Java SE 8
        int []result=new int[P.length];
        for(int index=0;index<P.length;index++){
           String check= S.substring(P[index],Q[index]+1);
           if(check.contains("A")){
           result[index]=1;

stephen-maina

import java.util.stream.IntStream;
import java.lang.Math;
class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int [] sorted=IntStream.of(A).sorted().toArray();
        return Math.max(sorted[0]*sorted[1]*sorted[sorted.length-1],sorted[sorted.length-1]*sorted[sorted.length-2]*sorted[sorted.length-3]);
    }
}

stephen-maina

import java.util.stream.IntStream;
import java.util.Set;
import java.util.stream.Collectors;
class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        Set<Integer> result=IntStream.of(A).boxed().collect(Collectors.toSet());
        return result.size();
    }
}

stephen-maina

import java.util.stream.IntStream;
class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int[]sorted=IntStream.of(A).sorted().toArray();
        for(int index=2;index<sorted.length;index++){
            long ind1=(long)sorted[index];
            long ind2=(long)sorted[index-1];
            long ind3=(long)sorted[index-2];
            if(ind3+ind2>ind1&&ind1+ind2>ind3&&ind3+ind1>ind2){

stephen-maina

class Solution {
    public int solution(int[] a) {
    int result = 0;
    int[] dps = new int[a.length];
    int[] dpe = new int[a.length];

    for (int i = 0; i < a.length; i++)
    {
        dps[Math.max(0, i - a[i])]++;
        dpe[Math.min(a.length - 1, i + a[i])]++;

stephen-maina

import java.util.Stack;
class Solution {
    public int solution(String S) {
        // write your code in Java SE 8
        char [] test= S.toCharArray();
        Stack<String> container=new Stack<String>();
        for (int index=0;index<test.length;index++){
            char popped=test[index];
            
                if(container.empty()){

stephen-maina

import java.util.Stack;
class Solution {
    public int solution(String S) {
        // write your code in Java SE 8
        Stack<String>stack=new Stack<String>();
        
        for(int index=0;index<S.length();index++){
            if(S.charAt(index)=='('){
                stack.push("(");                
            }else{