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Given n balloons, indexed from 0 to n-1. Each balloon is painted with a number on it represented by array nums. You are asked to burst all the balloon 阅读全文
posted @ 2017-06-26 18:07
hellowOOOrld
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Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. We define an in 阅读全文
posted @ 2017-06-25 12:47
hellowOOOrld
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There are n different online courses numbered from 1 to n. Each course has some duration(course length) t and closed on dth day. A course should be ta 阅读全文
posted @ 2017-06-25 12:42
hellowOOOrld
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Given an integer array, find three numbers whose product is maximum and output the maximum product. Example 1: Example 2: Note: 思路： 首先排序，然后分别判断数组元素最大值 阅读全文
posted @ 2017-06-25 11:16
hellowOOOrld
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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 @ 2017-06-25 08:54
hellowOOOrld
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Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. 阅读全文
posted @ 2017-06-24 15:59
hellowOOOrld
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Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be 阅读全文
posted @ 2017-06-24 15:10
hellowOOOrld
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Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and t. t is po 阅读全文
posted @ 2017-06-23 17:44
hellowOOOrld
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Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum pro 阅读全文
posted @ 2017-06-23 15:46
hellowOOOrld
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Given a non-negative integer n, count all numbers with unique digits, x, where 0 ≤ x < 10n. Example:Given n = 2, return 91. (The answer should be the 阅读全文
posted @ 2017-06-23 13:55
hellowOOOrld
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