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要有梦想，即使遥远。

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`@@ -1,5 +1,6 @@`
	`1`	`+`
`1`	`2`	`<h1align="center">Java后端面试核心知识体系</h1>`
`2`		`-<h2>祝您早日收获心仪offer😀</h2>`
	`3`	`+<h2>要有梦想，即使遥远。😀</h2>`
`3`	`4`
`4`	`5`	`![QQ群](https://img.shields.io/badge/QQ%E7%BE%A4-660108379-yellowgreen.svg)`
`5`	`6`	`![微信公众号](https://img.shields.io/badge/微信公众号-码上Java-yellowgreen.svg)`

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`@@ -237,13 +237,24 @@ having count(sc.cid ) < 3`
`237`	`237`	`>查询至少有一门课与学号为“01”的同学所学相同的同学的学号和姓名；`
`238`	`238`
`239`	`239`	```sql
`240`		`-`
	`240`	`+select distinctsc.sid,sname`
	`241`	`+from sc`
	`242`	`+join studentas s`
	`243`	`+onsc.sid=s.sid`
	`244`	`+where cidin`
	`245`	`+ (select distinct cidfrom scwhere sid='01')`
`241`	`246`	```
`242`	`247`
`243`	`248`	`###3.2 第十二道`
`244`	`249`
`245`	`250`	`>查询和"01"号的同学学习的课程完全相同的其他同学的学号和姓名;`
`246`	`251`
	`252`	+```sql
	`253`	`+`
	`254`	+```
	`255`	`+`
	`256`	`+`
	`257`	`+`
`247`	`258`	`###3.3 第十三道`
`248`	`259`
`249`	`260`	`###3.4 第十四道`

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`@@ -16,6 +16,8 @@ public class Test {`
`16`	`16`	`*/`
`17`	`17`	`publicintkthToLast(ListNodehead,intN) {`
`18`	`18`	`//双指针法`
	`19`	`+`
	`20`	`+inta;`
`19`	`21`	`ListNodepre=head;`
`20`	`22`	`ListNodelow=head;`
`21`	`23`	`if(head.next==null){`

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