search-insert-position.cpp

// Time:  O(logn)
// Space: O(1)

class Solution {
public:
    int searchInsert(vector<int>& nums, int target) {
        int left = 0;
        int right = nums.size() - 1;

        while (left <= right) {
            const auto mid = left + (right -left) / 2;
            if (nums[mid] >= target) {
                right = mid - 1;
            } else {
                left = mid + 1;
            }
        }

        return left;
    }
};