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Copy path0035.搜索插入位置.cpp
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0035.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
*
* https://leetcode-cn.com/problems/search-insert-position/description/
*
* algorithms
* Easy (44.12%)
* Likes: 358
* Dislikes: 0
* Total Accepted: 90.3K
* Total Submissions: 202.7K
* Testcase Example: '[1,3,5,6]\n5'
*
* 给定一个排序数组和一个目标值,在数组中找到目标值,并返回其索引。如果目标值不存在于数组中,返回它将会被按顺序插入的位置。
*
* 你可以假设数组中无重复元素。
*
* 示例 1:
*
* 输入: [1,3,5,6], 5
* 输出: 2
*
*
* 示例 2:
*
* 输入: [1,3,5,6], 2
* 输出: 1
*
*
* 示例 3:
*
* 输入: [1,3,5,6], 7
* 输出: 4
*
*
* 示例 4:
*
* 输入: [1,3,5,6], 0
* 输出: 0
*
*
*/
// @lc code=start
#include <vector>
using namespace std;
class Solution {
public:
int searchInsert(vector<int>& nums, int target)
{
if (nums.size() == 0) {
return 0;
}
int left = 0;
int right = nums.size() - 1;
int mid;
while (left <= right) {
mid = (left + right) / 2;
if (nums[mid] == target) {
return mid;
}
if (nums[mid] < target) {
left = mid + 1;
} else {
right = mid - 1;
}
}
if (nums[mid] < target) {
return ++mid;
}
return mid;
}
};
// @lc code=end