Min & Max Values in Array
given an array myArray of integers, write a JS program to find the maximum and minimum values in the array.
input1
[1,4,2,7,9,3,5]
output1
{min: 1, max: 9}
"use strict";
process.stdin.resume[];
process.stdin.setEncoding["utf-8"];
let inputString = "";
let currentLine = 0;
process.stdin.on["data", [inputStdin] => {
inputString += inputStdin;
}];
process.stdin.on["end", [_] => {
inputString = inputString
.trim[]
.split["\n"]
.map[[str] => str.trim[]];
main[];
}];
function readLine[] {
return inputString[currentLine++];
}
/* Please do not modify anything above this line */
function findMinAndMaxValuesInArray[arr] {
/* Write your code here */
}
/* Please do not modify anything below this line */
function main[] {
let myArray = JSON.parse[readLine[]];
console.log[findMinAndMaxValuesInArray[myArray]];
}
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The minimum and maximum element in an array can be found using 2 approaches:
Method 1: Using Math.min[] and Math.max[]
The
min[] and max[] methods of the Math object are static functions that return the minimum and maximum element passed to it. These functions could be passed an array with the spread[…] operator. The spread operator allows an iterable to expand in places where multiple arguments are expected. In this case, it automatically expands array and gives the numbers to the functions.
Syntax:
minValue = Math.min[...array]; maxValue = Math.max[...array];
Example 1:
Find the min/max element
of an Array using JavaScript
GeeksforGeeks
Find the min/max element of
an Array using JavaScript
Click on the button below t
o find out the minimum and
maximum of the array
[50, 60, 20, 10, 40]
Minimum element is:
Maximum Element is:
Click to check
function findMinMax[] {
array = [50, 60, 20, 10, 40];
minValue = Math.min[...array];
maxValue = Math.max[...array];
document.querySelector[
'.min'].textContent = minValue;
document.querySelector[
'.max'].textContent = maxValue;
}
Output:
Method 2: Iterating through the array and keeping track of the minimum and maximum element
The minimum and maximum element can be kept track by iterating through all the elements in the array and updating the minimum and maximum element upto that point by comparing them to the current minimum and maximum values. Initially, the minimum and maximum values are initialized to Infinity and -Infinity.
Syntax:
minValue = Infinity;
maxValue = -Infinity;
for [item of array] {
// find minimum value
if [item < minValue]
minValue = item;
// find maximum value
if [item > maxValue]
maxValue = item;
}Example:
Find the min/max element
of an Array using JavaScript
GeeksforGeeks
Find the min/max element
of an Array using JavaScript
Click on the button below to
find out the minimum and
maximum of the array
[50, 60, 20, 10, 40]
Minimum element is:
Maximum Element is:
Click to check
function findMinMax[] {
array = [50, 60, 20, 10, 40];
minValue = Infinity;
maxValue = -Infinity;
for [item of array] {
// find minimum value
if [item < minValue]
minValue = item;
// find maximum value
if [item > maxValue]
maxValue = item;
}
document.querySelector[
'.min'].textContent = minValue;
document.querySelector[
'.max'].textContent = maxValue;
}
Output: