{ "data": { "question": { "questionId": "2476", "questionFrontendId": "2399", "categoryTitle": "Algorithms", "boundTopicId": 1793490, "title": "Check Distances Between Same Letters", "titleSlug": "check-distances-between-same-letters", "content": "
You are given a 0-indexed string s consisting of only lowercase English letters, where each letter in s appears exactly twice. You are also given a 0-indexed integer array distance of length 26.
Each letter in the alphabet is numbered from 0 to 25 (i.e. 'a' -> 0, 'b' -> 1, 'c' -> 2, ... , 'z' -> 25).
In a well-spaced string, the number of letters between the two occurrences of the ith letter is distance[i]. If the ith letter does not appear in s, then distance[i] can be ignored.
Return true if s is a well-spaced string, otherwise return false.
\n
Example 1:
\n\n\nInput: s = "abaccb", distance = [1,3,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]\nOutput: true\nExplanation:\n- 'a' appears at indices 0 and 2 so it satisfies distance[0] = 1.\n- 'b' appears at indices 1 and 5 so it satisfies distance[1] = 3.\n- 'c' appears at indices 3 and 4 so it satisfies distance[2] = 0.\nNote that distance[3] = 5, but since 'd' does not appear in s, it can be ignored.\nReturn true because s is a well-spaced string.\n\n\n
Example 2:
\n\n\nInput: s = "aa", distance = [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]\nOutput: false\nExplanation:\n- 'a' appears at indices 0 and 1 so there are zero letters between them.\nBecause distance[0] = 1, s is not a well-spaced string.\n\n\n
\n
Constraints:
\n\n2 <= s.length <= 52s consists only of lowercase English letters.s exactly twice.distance.length == 260 <= distance[i] <= 50给你一个下标从 0 开始的字符串 s ,该字符串仅由小写英文字母组成,s 中的每个字母都 恰好 出现 两次 。另给你一个下标从 0 开始、长度为 26 的的整数数组 distance 。
字母表中的每个字母按从 0 到 25 依次编号(即,'a' -> 0, 'b' -> 1, 'c' -> 2, ... , 'z' -> 25)。
在一个 匀整 字符串中,第 i 个字母的两次出现之间的字母数量是 distance[i] 。如果第 i 个字母没有在 s 中出现,那么 distance[i] 可以 忽略 。
如果 s 是一个 匀整 字符串,返回 true ;否则,返回 false 。
\n\n
示例 1:
\n\n输入:s = \"abaccb\", distance = [1,3,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]\n输出:true\n解释:\n- 'a' 在下标 0 和下标 2 处出现,所以满足 distance[0] = 1 。\n- 'b' 在下标 1 和下标 5 处出现,所以满足 distance[1] = 3 。\n- 'c' 在下标 3 和下标 4 处出现,所以满足 distance[2] = 0 。\n注意 distance[3] = 5 ,但是由于 'd' 没有在 s 中出现,可以忽略。\n因为 s 是一个匀整字符串,返回 true 。\n\n\n
示例 2:
\n\n输入:s = \"aa\", distance = [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]\n输出:false\n解释:\n- 'a' 在下标 0 和 1 处出现,所以两次出现之间的字母数量为 0 。\n但是 distance[0] = 1 ,s 不是一个匀整字符串。\n\n\n
\n\n
提示:
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collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u6ce8\\u610f Python 2.7 \\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\" \\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n 1. 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this structure hashable *\\/\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\"],\"csharp\":[\"C#\",\"Node.js 16.13.2<\\/code><\\/p>\\r\\n\\r\\n--harmony<\\/code> \\u6807\\u8bb0\\u6765\\u5f00\\u542f \\u65b0\\u7248ES6\\u7279\\u6027<\\/a>\\u3002<\\/p>\\r\\n\\r\\nRuby 3.1<\\/code>\\u6267\\u884c<\\/p>\\r\\n\\r\\nSwift 5.5.2<\\/code><\\/p>\\r\\n\\r\\nGo 1.17<\\/code><\\/p>\\r\\n\\r\\nPython 3.10<\\/code><\\/p>\\r\\n\\r\\nScala 2.13<\\/code><\\/p>\"],\"kotlin\":[\"Kotlin\",\"Kotlin 1.3.10<\\/code><\\/p>\"],\"rust\":[\"Rust\",\"rust 1.58.1<\\/code><\\/p>\\r\\n\\r\\nPHP 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