leetcode 1079 Letter Tile Possibilities
lc1079 Letter Tile Possibilities 利用递归解决 观察题目给出的例子 AAB 按照长度分 A, B AA, AB, BA AAB, ABA, BAA 不难发现，长度为n的解可由长度为n-1的解推出 利用递归，每次长度为n的解可以递归了化简至长度 ...
原文：【leetcode】1079. Letter Tile Possibilities
题目如下： You have a set oftiles, where each tile has one lettertiles i printed on it. Return the number of possible non empty sequences of letters you can make. Example : Example : Note: lt tiles.length ...
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