{ "data": { "question": { "questionId": "1822", "questionFrontendId": "1682", "categoryTitle": "Algorithms", "boundTopicId": 515829, "title": "Longest Palindromic Subsequence II", "titleSlug": "longest-palindromic-subsequence-ii", "content": null, "translatedTitle": "最长回文子序列 II", "translatedContent": null, "isPaidOnly": true, "difficulty": "Medium", "likes": 12, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [], "langToValidPlayground": null, "topicTags": [ { "name": "String", "slug": "string", "translatedName": "字符串", "__typename": "TopicTagNode" }, { "name": "Dynamic Programming", "slug": "dynamic-programming", "translatedName": "动态规划", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"615\", \"totalSubmission\": \"1.1K\", \"totalAcceptedRaw\": 615, \"totalSubmissionRaw\": 1120, \"acRate\": \"54.9%\"}", "hints": [ "As with any good dp problem that uses palindromes, try building the palindrome from the edges", "The prime point is to check that no two adjacent characters are equal, so save the past character while building the palindrome." ], "solution": null, "status": null, "sampleTestCase": "\"bbabab\"", "metaData": "{\n \"name\": \"longestPalindromeSubseq\",\n \"params\": [\n {\n \"name\": \"s\",\n \"type\": \"string\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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