279. Perfect Squares
题目： Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given ...
原文：LeetCode 279. Perfect Squares
Given a positive integern, find the least number of perfect square numbers for example, , , , , ... which sum ton. For example, givenn , return because givenn , return because . 题目分析 一个数可以由一些完全平方数相加得到 ...
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