搜索插入位置

class Solution {
    public int searchInsert(int[] nums, int target) {
        int n = nums.length;
        int left = 0,right = n-1;
        while(left <= right){
            int mid = (left + right) / 2;
            if(nums[mid] ==  target){
                return mid;
            }else if(nums[mid] > target){
                right = mid - 1;
            }else if(nums[mid] < target){
                left = mid + 1;
            }
        }
        return left;
    }
}