# 档案日期2017的51

## LeetCode Weekly Contest 64解题报告 作者是 在线疯狂 发布于 2017年12月24日 在 LeetCode.

LeetCode Weekly Contest 64是LeetCode举办的第六十八场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 747. Largest Number Greater Than Twice of Others

LeetCode 751. IP to CIDR

LeetCode 752. Open the Lock

LeetCode 753. Cracking the Safe

## 题目描述：

LeetCode 753. Cracking the Safe

There is a box protected by a password. The password is `n` digits, where each letter can be one of the first `k` digits `0, 1, ..., k-1`.

You can keep inputting the password, the ...

## 题目描述：

LeetCode 752. Open the Lock

You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots: `'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'`. The wheels can rotate freely and wrap ...

## 题目描述：

LeetCode 751. IP to CIDR

Given a start IP address `ip` and a number of ips we need to cover `n`, return a representation of the range as a list (of smallest possible length) of CIDR blocks.

A CIDR ...

## 题目描述：

LeetCode 747. Largest Number Greater Than Twice of Others

In a given integer array `nums`, there is always exactly one largest element.

Find whether the largest element in the array is at least twice as much as every other ...