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题目： Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. 冬天来了！您在比赛期间的第一份工 阅读全文
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题目： Implement strStr(). Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 返回haystack中第一次出现针的索引， 阅读全文
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题目： Find the nth digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... 找到无限整数序列的第n个数字1,2,3,4,5,6,7,8,9,10,11 ...... Note:n is 阅读全文