原文:【leetcode】1079. Letter Tile Possibilities

題目如下: 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 ...

2019-06-15 06:00 0 559 推薦指數:

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leetcode 1079 Letter Tile Possibilities

lc1079 Letter Tile Possibilities 利用遞歸解決 觀察題目給出的例子 AAB 按照長度分 A, B AA, AB, BA AAB, ABA, BAA 不難發現,長度為n的解可由長度為n-1的解推出 利用遞歸,每次長度為n的解可以遞歸了化簡至長度 ...

Wed Jun 12 19:28:00 CST 2019 0 611
LeetCode:Letter Combinations of a Phone Number

題目鏈接 Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like ...

Fri Jun 06 06:17:00 CST 2014 0 3383
LeetCode(17) - Letter Combinations of a Phone Number

  經典的backtracking(回溯算法)的題目。當一個題目,存在各種滿足條件的組合,並且需要把它們全部列出來時,就可以考慮backtracking了。當然,backtracking在一定程度上屬 ...

Sun Mar 13 20:23:00 CST 2016 0 3788
 
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