find_the_largest_number_in_an_array.md

Find the Largest Number in an Array

Find the Largest Number in an Array

To find the largest number in an array, iterate through the array and keep track of the largest number.

Algorithm:

1. Initialize a variable to store the largest number with a small value (e.g., -Infinity).
2. Iterate through the array and compare each element to the current largest number.
3. Update the largest number whenever a larger element is found.
4. Return the largest number.

Example:

function findLargest(arr) {
    let largest = -Infinity;

    for (const num of arr) {
        if (num > largest) {
            largest = num;
        }
    }

    return largest;
}

// Example usage
console.log(findLargest([5, 3, 8, 1, 6])); // Output: 8
console.log(findLargest([7, 4, 9, 2])); // Output: 9

This method has a time complexity of O(n), where n is the length of the array.

Tags: basic, JavaScript, Arrays, Algorithm