题目描述：
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 ...
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[LeetCode]Falling Squares
[LeetCode]Partition to K Equal Sum Subsets
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LeetCode.
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 ...
[LeetCode]Count Binary Substrings
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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 ...
[LeetCode]Degree of an Array
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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.
Your task is to find the smallest possible ...
[LeetCode]Top K Frequent Words
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题目描述：
LeetCode 692. Top K Frequent Words
Given a non-empty list of words, return the k most frequent elements.
Your answer should be sorted by frequency from highest to lowest. If two words have the same frequency, then the word ...