var nums1 = [2, 10, 38, 46,55,88]
var m = 6
var nums2 = [18,29,80,90]
var n = 4
    var last = []
    var first = 0, second = 0, count = 0;
    while (first < m && second < n) {
		if (nums1[first] <= nums2[second]) {
			last[count] = nums1[first]
			first++
			count++
		}
		else {
			last[count] = nums2[second];
			second++
			count++
		}
	}
	if (first < m) {
		while (first < m) {
			last[count] = nums1[first];
			first++
			count++
		}
	}
	else if (second < n) {
		while (second < n) {
			last[count] = nums2[second]
			second++
			count++
		}
    }
    nums1 = last
    for (var i = 0; i < nums1.length; i++){
        console.log(nums1[i])
    }