WebSep 16, 2024 · Last Index Of a Number in an Array. Given an array of length N and an integer x, you need to find and return the last index of integer x present in the array. Return -1 if it is not present in the array. Last index means - if x is present multiple times … WebOne option would be to create a HashMap that used the value as the key, and a collection of indexes for the value. As you scan the array, if the value isn't in the HashMap, add it w/ a new collection of the index. If the value is in the array, pull the collection, add the next index and finish the iteration.

Array.prototype.findLastIndex() - JavaScript MDN - Mozilla …

WebIn this code snippet example, you will learn how to use the findLastIndex() method in JavaScript to search for the last element in an array that satisfies a ... WebMar 30, 2024 · Description. The findLast () method is an iterative method. It calls a provided callbackFn function once for each element in an array in descending-index order, until … green shirt cartoon character

C# Finding the index of last element in the array

WebApr 25, 2024 · What *exactly* is electrical current, voltage, and resistance? Suing a Police Officer Instead of the Police Department How to open locks... WebMar 30, 2024 · The findLastIndex () method iterates the array in reverse order and returns the index of the first element that satisfies the provided testing function. If no elements satisfy the testing function, -1 is returned. See also the findLast () method, which returns the value of last element that satisfies the testing function (rather than its index). WebThere is Two conditions for answer to not exist. First is if an element is present more than 2 times. Note: an element should appear exactly 2 times in final answer. Suppose if there is an element in array A that is present 3 times, then already we would placed two elements and there wont be 3rd element to place here. fmri hand motion