countNegative.js

 /*Count negative numbers

Description

Given an array of integers of size N, find the number of negative elements in the array.

Input format

First line contains a positive integer n denoting the number of elements in the array and second

line contains n space separated elements of array.

Output format

For the given array, print the count of negative numbers in the array.

Sample input-1

5

1 -5 -4 3 0

Sample output-1

2

Explanation-1

There are two negative numbers in the array, that are -5 and -4.

Sample input-2

5

1 5 3 7 11

Sample output-2

0

Explanation-2

There are no negative elements in the array.

*/

let fs = require("fs");

let data = fs.readFileSync(0, 'utf-8');

let idx = 0;

data = data.split('\n');

function readLine() {

idx++;

return data[idx - 1].trim();

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////

let noOfInputs = parseInt(readLine());// 5

let sequence = readLine().split(" "); // [ "1","-5","-4","3","0"]

let count = 0;

for (let i = 0; i < noOfInputs; i++) // 0<5 true, 1<5 true, 2<5 true, 3<5 true, 4<5 true, 5<5 false

{

if (sequence[i] < 0) //. 1<0 false, -5<0 true, -4<0 true,3<0 false, 0<0 false

{

count++; //2

}

}

console.log(count);//2