1047 Student List for Course Zhejiang University has 40,000 students and provides 2,500 courses. Now given the registered course list of each student, ...
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2021-02-17 14:09:06
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for in 和for of的区别:https://www.cnblogs.com/zjx304/p/10687017.html 1 遍历数组通常用for循环 ES5的话也可以使用forEach,ES5具有遍历数组功能的还有map、filter、some、every、reduce、reduceRig ...
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2021-02-16 12:23:46
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Copy List with Random Pointer (M) 题目 A linked list is given such that each node contains an additional random pointer which could point to any node in ...
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2021-02-15 11:52:08
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You are given a series of video clips from a sporting event that lasted T seconds. These video clips can be overlapping with each other and have varie ...
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2021-02-15 11:46:25
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This time, you are supposed to find $A+B$ where $A$ and $B$ are two polynomials. Input Specification: Each input file contains one test case. Each cas ...
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2021-02-10 13:03:20
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Given the root of a binary tree, return the leftmost value in the last row of the tree. Example 1: Input: root = [2,1,3] Output: 1 Example 2: Input: r ...
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2021-02-10 12:54:11
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rownum 和 row_number()的区别 一、 Oracle中的rownum 用于从查询返回的行的编号,返回的第一行分配的是1,第二行是2,依次类推。这个伪字段可以用于限制查询返回的总行数,而且rownum不能以任何表的名称作为前缀。 rownum对于等于某值的查询条件 如果希望找到学生表中 ...
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数据库 时间:
2021-02-08 12:51:03
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Problem Description For decades, scientists have wondered whether each of the numbers from 0 to 100 could be represented as the sum of three cubes, wh ...
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2021-02-08 12:44:17
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问题: 给定一组字符串,和一个结果字符串,使用0~9对字母进行编码。 使得字符串数组相加后,结果=结果字符串。 求是否可能存在这样的编码。 Each character is decoded as one digit (0 - 9). Every pair of different characte ...
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2021-02-08 12:21:04
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仅供自己学习 题目: You are given a perfect binary tree where all leaves are on the same level, and every parent has two children. The binary tree has the foll ...
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2021-02-04 12:10:58
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