4. Median of Two Sorted Arrays

Posted 2020-09-30 LOVEwitch

There are two sorted arrays nums1 and nums2 of size m and n respectively.

Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).

Example 1:

nums1 = [1, 3]
nums2 = [2]

The median is 2.0

 Example 2:

nums1 = [1, 2]
nums2 = [3, 4]

The median is (2 + 3)/2 = 2.5

Solution:

var findMedianSortedArrays = function(nums1, nums2) {
    var num = nums1.concat(nums2)
    nums = num.sort(function (a,b) {
        return a>b? 1:-1;
    }) 
    if(nums.length%2 == 0) {
        return (nums[nums.length/2-1]+nums[nums.length/2])/2;    
    } else {
        return nums[Math.floor(nums.length/2)]
    }
};