131. Palindrome Partitioning(未完成)

Given a string s, partition s such that every substring of the partition is a palindrome.

Return all possible palindrome partitioning of s.

For example, given s = "aab",
Return

[
  ["aa","b"],
  ["a","a","b"]
]

解题思路

求所有答案，首先排除动态规划，应该是DFS (Palindrome Partitioning II 求个数才是动归）
遇到要求所有组合、可能、排列等解集的题目，一般都是DFS + backtracking
首先传入s="aab" path=[] res = [], 首先切割出"a"（然后是"aa" "aab" ...），然后判读它是不是回文串：
如果不是，直接跳过
如果是，则此时剩余的 s="ab"， path += ["a"]
写入res的判断是，当s=""时，记录结果
优化：可以通过用DP来计算任意s[i:j]是否是回文，并保存结果，再执行DFS，如果发现某条string不是回文，就可以直接退出，从而减少计算量

原文地址：https://www.cnblogs.com/zle1992/p/8452875.html

时间： 2024-08-03 02:21:16

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