https://blog.youkuaiyun.com/L_H21zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/L_H21/article/details/150768497https://blog.youkuaiyun.com/L_H21/article/details/150768497L_H21Mon, 25 Aug 2025 14:06:36 +08003-->2-->4-->2-->4-->2.....,该链表会存在一个环,环的入口即为重复的元素。快指针两步/次 慢指针一步/次 相对速度为1 快指针必然和慢指针相遇,不会跳过慢指针。当快慢指针在环内相遇时,再从起点出发一个慢指针,两慢指针相遇点必然是环入口点。例[1,3,4,2,2]]]>https://blog.youkuaiyun.com/L_H21/article/details/150768408https://blog.youkuaiyun.com/L_H21/article/details/150768408L_H21Mon, 25 Aug 2025 14:05:13 +0800 nums[i]的元素j,并将i与j交换;即最小幅度的增大(不完全)下一个排列:高位尽量不变,低位通过调整实现最小幅度的增大,若原本就是递减排序(无法再增大)则直接将其逆序转变为升序排列。]]>https://blog.youkuaiyun.com/L_H21/article/details/150768311https://blog.youkuaiyun.com/L_H21/article/details/150768311L_H21Mon, 25 Aug 2025 14:03:24 +08000;[L,i)-->1;定义三个指针,left、right置于数组两端,i用于遍历数组。]]>https://blog.youkuaiyun.com/L_H21/article/details/150768256https://blog.youkuaiyun.com/L_H21/article/details/150768256L_H21Mon, 25 Aug 2025 13:59:52 +0800https://blog.youkuaiyun.com/L_H21/article/details/150768223https://blog.youkuaiyun.com/L_H21/article/details/150768223L_H21Mon, 25 Aug 2025 13:58:13 +0800https://blog.youkuaiyun.com/L_H21/article/details/150768142https://blog.youkuaiyun.com/L_H21/article/details/150768142L_H21Mon, 25 Aug 2025 13:55:02 +0800https://blog.youkuaiyun.com/L_H21/article/details/150768081https://blog.youkuaiyun.com/L_H21/article/details/150768081L_H21Mon, 25 Aug 2025 13:53:20 +0800https://blog.youkuaiyun.com/L_H21/article/details/150767924https://blog.youkuaiyun.com/L_H21/article/details/150767924L_H21Mon, 25 Aug 2025 13:51:23 +0800https://blog.youkuaiyun.com/L_H21/article/details/150580135https://blog.youkuaiyun.com/L_H21/article/details/150580135L_H21Thu, 21 Aug 2025 12:10:37 +0800https://blog.youkuaiyun.com/L_H21/article/details/150580104https://blog.youkuaiyun.com/L_H21/article/details/150580104L_H21Thu, 21 Aug 2025 12:08:46 +0800https://blog.youkuaiyun.com/L_H21/article/details/150580031https://blog.youkuaiyun.com/L_H21/article/details/150580031L_H21Thu, 21 Aug 2025 12:06:38 +0800 if(s[i] == ')') --> if(s[i - 1] == ')') --> if(s[i - validLen[i - 1] - 1] == '('])以下标i结尾:validLen[i]--> if(s[i] == ')') --> if(s[i - 1] == '(') --> validLen[i] == 2 + validLen[i - 2]validLen[]:有效长度,validLen[i]代表,以下标i结尾时连续有效括号长度。]]>https://blog.youkuaiyun.com/L_H21/article/details/150579989https://blog.youkuaiyun.com/L_H21/article/details/150579989L_H21Thu, 21 Aug 2025 12:01:19 +0800https://blog.youkuaiyun.com/L_H21/article/details/150563979https://blog.youkuaiyun.com/L_H21/article/details/150563979L_H21Wed, 20 Aug 2025 23:05:52 +0800https://blog.youkuaiyun.com/L_H21/article/details/150563939https://blog.youkuaiyun.com/L_H21/article/details/150563939L_H21Wed, 20 Aug 2025 23:01:13 +0800 if(nums[i] > nums[0...i-1]) ---> Math.max(maxSubseq[0...i-1] + 1 )以下标为3结尾:maxSubseq[3]---> if(nums[3] > nums[0,1,2]) ---> Math.max(maxSubseq[0,1,2] + 1 )以下标为1结尾:maxSubseq[1]---> if(nums[1] > nums[0]) ---> maxSubseq[0] + 1。]]>https://blog.youkuaiyun.com/L_H21/article/details/150563917https://blog.youkuaiyun.com/L_H21/article/details/150563917L_H21Wed, 20 Aug 2025 22:59:00 +0800= len) 且前1 - len个字符构成的单词在wordDict中存在(s[0,1-len)) 且当前[1-len,1)的len个单词在wordDict是否存在。当前前i个字符组成的单词足够匹配wordDict中的单词(i >= len) 且前i - len个字符构成的单词在wordDict中存在(s[0,i-len)) 且当前[i-len,i)的len个单词在wordDict是否存在。其余通过后续递推更改状态。]]>https://blog.youkuaiyun.com/L_H21/article/details/150531113https://blog.youkuaiyun.com/L_H21/article/details/150531113L_H21Tue, 19 Aug 2025 17:40:13 +0800https://blog.youkuaiyun.com/L_H21/article/details/150531059https://blog.youkuaiyun.com/L_H21/article/details/150531059L_H21Tue, 19 Aug 2025 17:38:31 +0800https://blog.youkuaiyun.com/L_H21/article/details/150494171https://blog.youkuaiyun.com/L_H21/article/details/150494171L_H21Mon, 18 Aug 2025 15:46:49 +0800https://blog.youkuaiyun.com/L_H21/article/details/150494059https://blog.youkuaiyun.com/L_H21/article/details/150494059L_H21Mon, 18 Aug 2025 15:42:59 +0800https://blog.youkuaiyun.com/L_H21/article/details/150291312https://blog.youkuaiyun.com/L_H21/article/details/150291312L_H21Tue, 12 Aug 2025 22:16:35 +0800