# Day 4: Count Objects Solution

Hello Friends in this article i am gone to share Hackerrank 10 days of javascript solutions with you. | Day 4: Count Objects Solution.

## Objective

In this challenge, we learn about iterating over objects.

Complete the function in the editor. It has one parameter: an array, a, of objects. Each object in the array has two integer properties denoted by x and y. The function must return a count of all such objects o in array a that satisfy o.x == o.y.

## Input Format

The first line contains an integer denoting n.
Each of the n subsequent lines contains two space-separated integers describing the values of x and y.

## Constraints

• 5 <= n <= 10
• 1 <= x, y <= 100

## Output Format

Return a count of the total number of objects o such that o.x == o.y. Locked stub code in the editor prints the returned value to STDOUT.

Sample Input 0

```5
1 1
2 3
3 3
3 4
4 5```

Sample Output 0

`2`

Explanation 0

There are n = 5 objects in the objects array:

• objects0 = {x: 1, y: 1}
• objects1 = {x: 2, y: 3}
• objects2 = {x: 3, y: 3}
• objects3 = {x: 3, y: 4}
• objects4 = {x: 4, y: 5}

Because we have two objects o that satisfy o.x == o.y(i.e., objects0 and objects2), we return 2 as our answer.

## Solution – Day 4: Count Objects

```'use strict';

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

let inputString = '';
let currentLine = 0;

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

process.stdin.on('end', _ => {
inputString = inputString.trim().split('\n').map(string => {
return string.trim();
});

main();
});

return inputString[currentLine++];
}

/*
* Return a count of the total number of objects 'o' satisfying o.x == o.y.
*
* Parameter(s):
* objects: an array of objects with integer properties 'x' and 'y'
*/
function getCount(objects) {
var count = 0;
for (var index in objects){
if (objects[index].x == objects[index].y){
count++;
}
}
return count;
}

function main() {
let objects = [];

for (let i = 0; i < n; i++) {
const [a, b] = readLine().split(' ');

objects.push({x: +(a), y: +(b)});
}

console.log(getCount(objects));
}```

Complete the function in the editor. It has two parameters: a and b. It must return an object modeling a rectangle that has the following properties: Complete the function in the editor. It has two parameters: a and b. It must return an object modeling a rectangle that has the following properties: