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Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2 阅读全文
posted @ 2020-03-21 22:19
米开朗菠萝
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Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. Example 1: Input: n = 12 O 阅读全文
posted @ 2020-03-21 21:34
米开朗菠萝
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You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you nee 阅读全文
posted @ 2020-03-21 21:07
米开朗菠萝
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Write a program to find the n-th ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. Example: Input: n = 10 Outpu 阅读全文
posted @ 2020-03-21 19:35
米开朗菠萝
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Given a 2D binary matrix filled with 0's and 1's, find the largest square containing only 1's and return its area. Example: Input: 1 0 1 0 0 1 0 1 1 1 阅读全文
posted @ 2020-03-21 18:46
米开朗菠萝
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