611. Valid Triangle Number

Description

Given an array consists of non-negative integers, your task is to count the number of triplets chosen from the array that can make triangles if we take them as side lengths of a triangle. Example 1:

Input: a = "11", b = "1"
Output: "100"

Example 2:

Input: a = "1010", b = "1011"
Output: "10101"

Tags: Math, String

题意

求2数之和

题解

思路1

。。。。

思路2

思路2 ```go

```

结语

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