Leetcode list(updating)
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LeetCode Question List
Blog posts
2019
New 21 game
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LeetCode 837 New 21 Game
解题记录 1
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Largest Sum of Averages
背包笔记
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背包九讲阅读笔记
应用层学习笔记
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Svm笔记
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Opencv_python
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Ml学习笔记
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When $a \ne 0$, there are two solutions to (ax^2 + bx + c = 0) and they are \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\)
Java多线程
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- 创建一个thread
解题记录
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Leetcode 857 Minimum cost to hire K workers
Lang_spec_java
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- Arrays
- asList(arguments…) => List
- fill(array, value)
- sort(array, Comparator)
- stream()
- ArrayList
- remove(index)
- remove(Obj)
- sort(Comparator)
- toArray() => Object
- Queue
- add
- element
- offer
- peek
- Poll
- instantiate as LinkedList or ArrayDeque
- Stack
- pop
- push
- Iterator
- Implements iterable
- returns an iterator
- hasNext, next
- Stream
- Collection.stream().map/filter/ etc…. collect(Collectors.toList())
- Map
- Entry
- getKey
- put
- getValue
- keySet
- values
- entrySet
复习1
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Pseudo-codes are from wikipedia
链表操作
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链表操作总结
单向链表的操作大致可以总结为插入，删除和反转。根据问题，可以将一般解法依照单向链表的特征进行改造。
C++多线程
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C++
决策树学习笔记
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决策树
Tcp学习笔记
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TCP, UDP协议学习笔记
Sample_post
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