Algorithm

Problem Name: Algorithms - Compare the Triplets

In this HackerRank Functions in Algorithms - Java programming problem solution,

Alice and Bob each created one problem for HackerRank. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty.

The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]).

The task is to find their comparison points by comparing a[0] with b[0], a[1] with b[1], and a[2] with b[2].

• If a[i] > b[i], then Alice is awarded 1 point.
• If a[i] < b[i], then Bob is awarded 1 point.
• If a[i] = b[i], then neither person receives a point.

Comparison points is the total points a person earned.

Given a and b, determine their respective comparison points.

Example

a = [1, 2, 3]
b = [3, 2, 1]

• For elements *0*, Bob is awarded a point because a[0] .
• For the equal elements a[1] and b[1], no points are earned.
• Finally, for elements 2, a[2] > b[2] so Alice receives a point.

The return array is [1, 1] with Alice's score first and Bob's second.

Function Description

Complete the function compareTriplets in the editor below.

compareTriplets has the following parameter(s):

• int a[3]: Alice's challenge rating
• int b[3]: Bob's challenge rating

Return

• int[2]: Alice's score is in the first position, and Bob's score is in the second.

Input Format

The first line contains 3 space-separated integers, a[0], a[1], and a[2], the respective values in triplet a.
The second line contains 3 space-separated integers, b[0], b[1], and b[2], the respective values in triplet b.

Constraints

• 1 ≤ a[i] ≤ 100
• 1 ≤ b[i] ≤ 100

Sample Input 0

```5 6 7
3 6 10
```

Sample Output 0

```1 1
```

Code Examples

#1 Code Example with C Programming

```Code - C Programming```

``````
#include <stdio.h>

int main(){
int alice[3];
int bob[3];
scanf("%d %d %d", &alice[0], &alice[1], &alice[2]);
scanf("%d %d %d", &bob[0], &bob[1], &bob[2]);

int score_alice = 0;
int score_bob = 0;
for (int i = 0; i  <  3; i++) {
if (alice[i] > bob[i])
score_alice++;
if (bob[i] > alice[i])
score_bob++;
}
printf("%d %d\n", score_alice, score_bob);
return 0;
}
``````
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#2 Code Example with C++ Programming

```Code - C++ Programming```

``````
#include <bits/stdc++.h>

using namespace std;

string ltrim(const string &);
string rtrim(const string &);
vector < string> split(const string &);

// Complete the compareTriplets function below.
vector<int> compareTriplets(vector<int> a, vector<int> b) {

vector<int> result;
int aliceScore = 0;
int bobScore = 0;

for(int i = 0;i  <  a.size(); i++){
if(a[i] > b[i])
aliceScore ++;
else if(b[i] > a[i])
bobScore++;
}
result.push_back(aliceScore);
result.push_back(bobScore);
return result;
}

int main()
{
ofstream fout(getenv("OUTPUT_PATH"));

string a_temp_temp;
getline(cin, a_temp_temp);

vector < string> a_temp = split(rtrim(a_temp_temp));

vector<int> a(3);

for (int i = 0; i  <  3; i++) {
int a_item = stoi(a_temp[i]);

a[i] = a_item;
}

string b_temp_temp;
getline(cin, b_temp_temp);

vector < string> b_temp = split(rtrim(b_temp_temp));

vector<int> b(3);

for (int i = 0; i  <  3; i++) {
int b_item = stoi(b_temp[i]);

b[i] = b_item;
}

vector<int> result = compareTriplets(a, b);

for (int i = 0; i  <  result.size(); i++) {
fout << result[i];

if (i != result.size() - 1) {
fout << " ";
}
}

fout << "\n";

fout.close();

return 0;
}

string ltrim(const string &str) {
string s(str);

s.erase(
s.begin(),
find_if(s.begin(), s.end(), not1(ptr_fun < int, int>(isspace)))
);

return s;
}

string rtrim(const string &str) {
string s(str);

s.erase(
find_if(s.rbegin(), s.rend(), not1(ptr_fun < int, int>(isspace))).base(),
s.end()
);

return s;
}

vector < string> split(const string &str) {
vector<string> tokens;

string::size_type start = 0;
string::size_type end = 0;

while ((end = str.find(" ", start)) != string::npos) {
tokens.push_back(str.substr(start, end - start));

start = end + 1;
}

tokens.push_back(str.substr(start));

}
``````
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#3 Code Example with Java Programming

```Code - Java Programming```

``````
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

//given values for ai and bi
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int a0 = in.nextInt();
int a1 = in.nextInt();
int a2 = in.nextInt();
int b0 = in.nextInt();
int b1 = in.nextInt();
int b2 = in.nextInt();

//initialize both Alice's and Bob's points to 0
int aliceCount = 0;
int bobCount = 0;

if(a0 > b0){
aliceCount++;
}
else if(a0 < b0>{
bobCount++;
}
if(a1 > b1){
aliceCount++;
}
else if (a1 < b1>{
bobCount++;
}
if(a2 > b2){
aliceCount++;
}
else if(a2 < b2) {
bobCount++;
}

System.out.println(aliceCount + " " + bobCount>;
}
}
``````
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#4 Code Example with Javascript Programming

```Code - Javascript Programming```

``````
'use strict';

const fs = require('fs');

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', function(inputStdin) {
inputString += inputStdin;
});

process.stdin.on('end', function() {
inputString = inputString.split('\n');

main();
});

return inputString[currentLine++];
}

// Complete the compareTriplets function below.
function compareTriplets(a, b) {
let p1 = 0, p2 = 0, aliceScore = 0, bobScore = 0;
while (p1  <  a.length && p2 < b.length) {
if (a[p1] > b[p2]) {
aliceScore += 1;
p1 += 1;
p2 += 1;
} else if (a[p1]  <  b[p2]) {
bobScore += 1;
p1 += 1;
p2 += 1;

} else {
p1 += 1;
p2 += 1;
}
}
return [aliceScore, bobScore];

}

function main() {
const ws = fs.createWriteStream(process.env.OUTPUT_PATH);

const a = readLine().replace(/\s+\$/g, '').split(' ').map(aTemp => parseInt(aTemp, 10));

const b = readLine().replace(/\s+\$/g, '').split(' ').map(bTemp => parseInt(bTemp, 10));

const result = compareTriplets(a, b);

ws.write(result.join(' ') + '\n');

ws.end();
}
``````
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#5 Code Example with C# Programming

```Code - C# Programming```

``````
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Text;
using System;

class Solution {

// Complete the compareTriplets function below.
static List < int> compareTriplets(List<int> a, List<int> b) {
int aliceScore = 0;
int bobScore = 0;

for (int i = 0; i  <  a.Count; i++)
{
if (a[i] == b[i]) continue;
if (a[i] > b[i]) { aliceScore++; } else { bobScore++; }
}

return new List < int> { aliceScore, bobScore };
}

static void Main(string[] args) {
TextWriter textWriter = new StreamWriter(@System.Environment.GetEnvironmentVariable("OUTPUT_PATH"), true);

List < int> a = Console.ReadLine().TrimEnd().Split(' ').ToList().Select(aTemp => Convert.ToInt32(aTemp)).ToList();

List<int> b = Console.ReadLine().TrimEnd().Split(' ').ToList().Select(bTemp => Convert.ToInt32(bTemp)).ToList();

List < int> result = compareTriplets(a, b);

textWriter.WriteLine(String.Join(" ", result));

textWriter.Flush();
textWriter.Close();
}
}
``````
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#6 Code Example with Python Programming

```Code - Python Programming```

``````
import math
import os
import random
import re
import sys

def compareTriplets(a, b):
sa = 0
sb = 0
for i in range(0,3):
if a[i] > b[i]:
sa += 1
if a[i] < b[i]:
sb += 1
return [sa,sb]

if __name__ == '__main__':
fptr = open(os.environ['OUTPUT_PATH'], 'w')

a = list(map(int, input().rstrip().split()))

b = list(map(int, input().rstrip().split()))

result = compareTriplets(a, b)

fptr.write(' '.join(map(str, result)))
fptr.write('\n')

fptr.close()
``````
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