How to use Linear Search (Reverse order) In Javascript

This method is similar to the above, the only difference is we will iterate the array in reverse order i.e. from last index to first.

Example: In this method, we will use the reverse iteration in linear search to get the last occurance of target element.

Javascript

// Input array 
arr = [1, 2, 3, 4, 5, 5, 5, 6, 6, 7, 8, 8, 9]; 
  
// Target element 
target = 5; 
  
// Iterate from last to zero index 
for (let i = arr.length - 1; i >= 0; i--) { 
  
  // If target found return and exit program 
  if (arr[i] === target) { 
    console.log( 
      "The Last index of " + target + " is: " + i 
    ); 
    return; 
  } 
} 
  
// If not found display output 
console.log(target + " is not present in the given");

Output

The Last index of 5 is: 6

JavaScript Program to find the Index of Last Occurrence of Target Element in Sorted Array

In this article, we will see the JavaScript program to get the last occurrence of a number in a sorted array. We have the following methods to get the last occurrence of a given number in the sorted array.