The _.sortedLastIndexOf method is used to return the highest index of the array where an element can be inserted and maintain its sorted order. Also this method is like _.lastIndexOf except that it performs a binary search on a sorted array.
Syntax:
_.sortedLastIndexOf(array, value)
Parameters: This method accepts two parameters as mentioned above and described below:
- array: This parameter holds the array to inspect.
- value: This parameter holds the value to search for.
Return Value: It returns the index of the matched value, else -1.
Example 1: Here, const _ = require(‘lodash’) is used to import the lodash library into the file.
javascript
// Requiring the lodash library const _ = require("lodash");
// Original array let y = [4, 5, 7, 7, 7] // Use of _.sortedLastIndexOf() // method let index = _.sortedLastIndexOf(y, 7); // Printing the output console.log(index); |
Output:
4
Example 2:
javascript
// Requiring the lodash library const _ = require("lodash");
// Original array let y = ['p', 'q', 'r', 't', 't', 'u', 's', 't' ]
// Use of _.sortedLastIndexOf() // method let index = _.sortedLastIndexOf(y, 't');
// Printing the output console.log(index); |
Output:
7