Sorting Array with JavaScript reduce function - JavaScript

We are required to write a JavaScript function that takes in an array of numbers. The function should sort the array with using the Array.prototype.sort() method. We are required to use the Array.prototype.reduce() method to sort the array.

Let’s say the following is our array −

const arr = [4, 56, 5, 3, 34, 37, 89, 57, 98];

Example

Following is the code −

// we will sort this array but
// without using the array sort function
// without using any kind of conventional loops
// using the ES6 function reduce()
const arr = [4, 56, 5, 3, 34, 37, 89, 57, 98];
const sortWithReduce = arr => {
   return arr.reduce((acc, val) => {
      let ind = 0;
      while(ind < arr.length && val < arr[ind]){
         ind++;
      }
      acc.splice(ind, 0, val);
      return acc;
   }, []);
};
console.log(sortWithReduce(arr));

Output

This will produce the following output in console −

[
 98, 57, 89, 37, 34,
  5, 56,  4,  3
]

AmitDiwan

Published on 30-Sep-2020 14:31:21

• Related Questions & Answers
• Reduce array in JavaScript
• JavaScript reduce sum array with undefined values
• Sorting Array Elements in Javascript
• JavaScript array sorting by level
• Sorting or Arranging an Array with standard array values - JavaScript
• Finding the product of array elements with reduce() in JavaScript
• Sorting Array based on another array JavaScript
• Reduce an array to groups in JavaScript
• Uneven sorting of array in JavaScript
• Average with the Reduce Method in JavaScript
• How to write the factorial function with reduce and range in JavaScript?
• Sorting an array of binary values - JavaScript
• Sorting Array without using sort() in JavaScript
• Sorting an array by date in JavaScript
• Sorting parts of array separately in JavaScript