Javascript Program to Print uncommon elements from two sorted arrays

// JavaScript program to find uncommon elements
// of two sorted arrays

function printUncommon(arr1,
    arr2, n1, n2) {

    let i = 0, j = 0, k = 0;
    let output = ''
    while (i < n1 && j < n2) {

        // If not common, print smaller
        if (arr1[i] < arr2[j]) {
            output += arr1[i] + " ";
            i++;
            k++;
        }
        else if (arr2[j] < arr1[i]) {
            output += arr2[j] + " ";
            k++;
            j++;
        }
        // Skip common element
        else {
            i++;
            j++;
        }
    }

    // printing remaining elements
    while (i < n1) {
        output += arr1[i] + " ";
        i++;
        k++;
    }

    while (j < n2) {
        output += arr2[j] + " ";
        j++;
        k++;
    }
    console.log(output);
}

// Driver Code
let arr1 = [10, 20, 30];
let arr2 = [20, 25, 30, 40, 50];

let n1 = arr1.length;
let n2 = arr2.length;

printUncommon(arr1, arr2, n1, n2);

// This code is contributed by susmitakundugoaldanga.