搜索插入位置

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