原文: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 on the telephone buttons is given below. Note: Although the ...

2014-06-05 22:17 0 3383 推薦指數:

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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
LeetCode:Combinations

題目鏈接 Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example, If n = 4 and k = 2, a solution ...

Fri Dec 06 23:50:00 CST 2013 0 2462
 
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