# 归档 2017年10月

## LeetCode Weekly Contest 54解题报告 作者是 在线疯狂 发布于 2017年10月15日 在 LeetCode.

LeetCode Weekly Contest 54是LeetCode举办的第五十八场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 697. Degree of an Array

LeetCode 696. Count Binary Substrings

LeetCode 698. Partition to K Equal Sum Subsets

LeetCode 699. Falling Squares

## 题目描述：

LeetCode 699. Falling Squares

On an infinite number line (x-axis), we drop given squares in the order they are given.

The `i`-th square dropped (`positions[i] = (left, side_length)`) is a square with the left-most point being `positions[i ...`

## 题目描述：

LeetCode 698. Partition to K Equal Sum Subsets

Given an array of integers `nums` and a positive integer `k`, find whether it's possible to divide this array into `k` non-empty subsets whose sums are all equal.

Example 1:

`Input ...`

## 题目描述：

LeetCode 696. Count Binary Substrings

Give a string `s`, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecutively ...

## 题目描述：

LeetCode 697. Degree of an Array

Given a non-empty array of non-negative integers `nums`, the degree of this array is defined as the maximum frequency of any one of its elements.