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35.搜索插入位置.cpp
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35.搜索插入位置.cpp
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/*
* @lc app=leetcode.cn id=35 lang=cpp
*
* [35] 搜索插入位置
*/
// @lc code=start
class Solution
{
public:
int searchInsert(vector<int> &nums, int target)
{
//暴力解法
// for (int i = 0; i < nums.size(); ++i)
// {
// if (nums[i] >= target)
// {
// return i;
// }
// }
// return nums.size();
//二分查找1
// int left = 0;
// int right = nums.size() - 1;
// while (left <= right)
// {
// int mid = left + ((right - left) >> 1);
// int cur = nums[mid];
// if (cur == target)
// {
// return mid;
// }
// else if (cur < target)
// {
// left = mid + 1;
// continue;
// }
// else
// {
// right = mid - 1;
// continue;
// }
// }
// return right + 1;
//二分查找2
int left = 0;
int right = nums.size();
while (left < right)
{
int mid = left + ((right - left) >> 1);
int cur = nums[mid];
if (cur == target)
{
return mid;
}
else if (cur < target)
{
left = mid + 1;
continue;
}
else
{
right = mid;
continue;
}
}
return right;
}
};
// @lc code=end