{ "data": { "question": { "questionId": "1838", "questionFrontendId": "1698", "categoryTitle": "Algorithms", "boundTopicId": 535265, "title": "Number of Distinct Substrings in a String", "titleSlug": "number-of-distinct-substrings-in-a-string", "content": null, "translatedTitle": "字符串的不同子字符串个数", "translatedContent": null, "isPaidOnly": true, "difficulty": "Medium", "likes": 11, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [], "langToValidPlayground": null, "topicTags": [ { "name": "Trie", "slug": "trie", "translatedName": "字典树", "__typename": "TopicTagNode" }, { "name": "String", "slug": "string", "translatedName": "字符串", "__typename": "TopicTagNode" }, { "name": "Suffix Array", "slug": "suffix-array", "translatedName": "后缀数组", "__typename": "TopicTagNode" }, { "name": "Hash Function", "slug": "hash-function", "translatedName": "哈希函数", "__typename": "TopicTagNode" }, { "name": "Rolling Hash", "slug": "rolling-hash", "translatedName": "滚动哈希", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"696\", \"totalSubmission\": \"1.4K\", \"totalAcceptedRaw\": 696, \"totalSubmissionRaw\": 1350, \"acRate\": \"51.6%\"}", "hints": [ "Calculate the prefix hashing array for s.", "Use the prefix hashing array to calculate the hashing value of each substring.", "Compare the hashing values to determine the unique substrings.", "There could be collisions if you use hashing, what about double hashing." ], "solution": null, "status": null, "sampleTestCase": "\"aabbaba\"", "metaData": "{\n \"name\": \"countDistinct\",\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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