题目：
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.
Here are few examples.
[1,3,5,6], 5 → 2
[1,3,5,6], 2 → 1
[1,3,5,6], 7 → 4
[1,3,5,6], 0 → 0
解答：
题目不难，但是要注意边界条件：
class Solution {
public:
int searchInsert(int A[], int n, int target) {
if(n == 0 || A[0] >= target)
return 0;
if(A[n-1] < target)
return n;
int ans;
for(int i = 0; i< n - 1; i++)
{
if(A[i] == target)
{
ans = i;
}
if(A[i+1] == target)
{
ans = (i+1);
}
if(A[i] < target && A[i+1] > target)
{
ans = (i+1);
}
}
return ans;
}
};【LeetCode从零单刷】Search Insert Position
原文：http://blog.csdn.net/ironyoung/article/details/45225641