Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Split an array of numbers and push positive numbers to JavaScript array and negative numbers to another?
We have to write a function that takes in an array and returns an object with two properties namely positive and negative. They both should be an array containing all positive and negative items respectively from the array.
This one is quite straightforward, we will use the Array.prototype.reduce() method to pick desired elements and put them into an object of two arrays.
Example
const arr = [
[12, -45, 65, 76, -76, 87, -98],
[54, -65, -98, -23, 78, -9, 1, 3],
[87, -98, 3, -2, 123, -877, 22, -5, 23, -67]
];
const splitArray = (arr) => {
return arr.reduce((acc, val) => {
if(val < 0){
acc['negative'].push(val);
} else {
acc['positive'].push(val);
}
return acc;
}, {
positive: [],
negative: []
})
};
for(let i = 0; i < arr.length; i++){
console.log(splitArray(arr[i]));
}Output
The output in the console will be −
{ positive: [ 12, 65, 76, 87 ], negative: [ -45, -76, -98 ] }
{ positive: [ 54, 78, 1, 3 ], negative: [ -65, -98, -23, -9 ] }
{
positive: [ 87, 3, 123, 22, 23 ],
negative: [ -98, -2, -877, -5, -67 ]
}
Updated on: 21-Aug-2020
316 Views
Advertisements