35. Search Insert Position

Problem:

Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order.

You may assume no duplicates in the array.

Example 1:

Input: [1,3,5,6], 5
Output: 2

Example 2:

Input: [1,3,5,6], 2
Output: 1

Example 3:

Input: [1,3,5,6], 7
Output: 4

Example 4:

Input: [1,3,5,6], 0
Output: 0

思路

Solution (C++):

int searchInsert(vector<int>& nums, int target) {
    int i = 0, n = nums.size();
    if (target < nums[0])  return 0;
    if (target > nums[n-1])  return n;
    for (; i < n;) {
        if (nums[i] == target)  return i;
        else if (target > nums[i] && target < nums[i+1])  return ++i;
        else ++i;
    }
    return i;
}

性能

Runtime: 4 ms  Memory Usage: 6.9 MB

思路

Solution (C++):


性能

Runtime: ms  Memory Usage: MB

相关链接如下:

知乎:littledy

欢迎关注个人微信公众号:小邓杂谈,扫描下方二维码即可

作者:littledy
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文链接,否则保留追究法律责任的权利。
原文地址:https://www.cnblogs.com/dysjtu1995/p/12584175.html