# 标签归档：leetcode

## LeetCode Warm Up Contest解题报告 作者是 在线疯狂 发布于 2016年8月21日 在 LeetCode.

LeetCode热身赛是LeetCode举办的第一场比赛，共3道题目，比赛时长24小时。

LeetCode 386. Lexicographical Numbers

LeetCode 387. First Unique Character in a String

LeetCode 388. Longest Absolute File Path

## 题目描述：

LeetCode 388. Longest Absolute File Path

Suppose we abstract our file system by a string in the following manner:

The string `"dir\n\tsubdir1\n\tsubdir2\n\t\tfile.ext"` represents:

```dir
subdir1
subdir2
file.ext
```

The directory `dir ...`

## 题目描述：

LeetCode 387. First Unique Character in a String

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1.

Examples:

```s = "leetcode"
return 0.

s = "loveleetcode",
return 2.
```

Note: You ...

## 题目描述：

LeetCode 386. Lexicographical Numbers

Given an integer n, return 1 - n in lexicographical order.

For example, given 13, return: [1,10,11,12,13,2,3,4,5,6,7,8,9].

## 题目描述：

LeetCode 100. Same Tree

Given two binary trees, write a function to check if they are equal or not.

Two binary trees are considered equal if they are structurally identical and the nodes have the same value.