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Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole array will be 阅读全文
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Given an array, rotate the array to the right by k steps, where k is non-negative. Follow up: Try to come up as many solutions as you can, there are a 阅读全文
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In a deck of cards, each card has an integer written on it. Return true if and only if you can choose X >= 2 such that it is possible to split the ent 阅读全文
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A 3 x 3 magic square is a 3 x 3 grid filled with distinct numbers from 1 to 9 such that each row, column, and both diagonals all have the same sum. Gi 阅读全文
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Given an integer array, find three numbers whose product is maximum and output the maximum product. 给一个数组，找出三个数，使得他们的乘积最大。 分类讨论 max1 max2 max3 min1 mi 阅读全文