JavaScript: Find the larger value between the first or last and set all the other elements with that value

Last update on May 30 2022 10:01:00 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-74 with Solution

Write a JavaScript program to find the larger value between the first or last and set all the other elements with that value. Display the new array.

Pictorial Presentation:

JavaScript: Find the larger value between the first or last and set all the other elements with that value.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to find the larger value between the first or last and set all the other elements with that value.  Display the new array.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function all_max(nums) 
 {
    var max_val = nums[0] > nums[2] ? nums[0] : nums[2];

    nums[0] = max_val;
    nums[1] = max_val;
    nums[2] = max_val;

    return nums;
}
console.log(all_max([20, 30, 40]));
console.log(all_max([-7, -9, 0]));
console.log(all_max([12, 10, 3]));

Sample Output:

[40,40,40]
[0,0,0]
[12,12,12]

Flowchart:

ES6 Version:

function all_max(nums) 
 {
    const max_val = nums[0] > nums[2] ? nums[0] : nums[2];

    nums[0] = max_val;
    nums[1] = max_val;
    nums[2] = max_val;

    return nums;
}
console.log(all_max([20, 30, 40]));
console.log(all_max([-7, -9, 0]));
console.log(all_max([12, 10, 3]));

Live Demo:

See the Pen JavaScript - Find the larger value between the first or last - basic-ex-74 by w3resource (@w3resource) on CodePen.

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Next: Write a JavaScript program to create a new array taking the middle elements of the two arrays of integer and each length 3.

JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());

Ref: https://bit.ly/2BXbp04