# 归档 2018年2月

## LeetCode Weekly Contest 73解题报告 作者是 在线疯狂 发布于 2018年2月25日 在 LeetCode.

LeetCode Weekly Contest 73是LeetCode举办的第七十七场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 788. Rotated Digits

LeetCode 789. Escape The Ghosts

LeetCode 791. Custom Sort String

LeetCode 790. Domino and Tromino Tiling

## 题目描述：

LeetCode 790. Domino and Tromino Tiling

We have two types of tiles: a 2x1 domino shape, and an "L" tromino shape. These shapes may be rotated.

```XX  <- domino

XX  <- "L" tromino
X
```

Given N, how many ways ...

## 题目描述：

LeetCode 791. Custom Sort String

`S` and `T` are strings composed of lowercase letters. In `S`, no letter occurs more than once.

`S` was sorted in some custom order previously. We want to permute the characters of `T` so ...

## 题目描述：

LeetCode 789. Escape The Ghosts

You are playing a simplified Pacman game. You start at the point `(0, 0)`, and your destination is` (target[0], target[1])`. There are several ghosts on the map, the i-th ghost starts at` (ghosts ...`

## 题目描述：

LeetCode 788. Rotated Digits

X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. A number is valid if each digit remains a digit after ...