Largest index difference with an increasing value in JavaScript

Problem

We are required to write a JavaScript function that takes in an array of numbers, arr. Our function should return the largest difference in indexes j - i such that arr[i] <= arr[j]

Example

The code for this will be −

 Live Demo

const arr = [1, 2, 3, 4];
const findLargestDifference = (arr = []) => {
   const { length: len } = arr;
   let res = 0;
   for(let i = 0; i < len; i++){
      for(let j = i + 1; j < len; j++){
         if(arr[i] <= arr[j] && (j - i) > res){
            res = j - i;
         };
      };
   };
   return res;
};
console.log(findLargestDifference(arr));

Output

And the output in the console will be −

3

AmitDiwan

Updated on 17-Apr-2021 12:12:20

• Related Questions & Answers
• Largest difference between element with a twist in JavaScript
• Prefix sums (Creating an array with increasing sum) with Recursion in JavaScript
• Odd even index difference - JavaScript
• Index difference of tuples in JavaScript
• Returning number with increasing digits. in JavaScript
• Program to find largest kth index value of one list in Python
• Python Pandas - Return the int position of the largest value in the Index
• Dictionary with index as value in Python
• Find even odd index digit difference - JavaScript
• Greatest sum and smallest index difference in JavaScript
• Find the column number with largest value for each row in an R matrix.
• Reverse index value sum of array in JavaScript
• Constructing largest number from an array in JavaScript
• Maximum absolute difference of value and index sums in C
• Python Pandas - Fill NaN values with the specified value in an Index object