containsKey

containsKey精品文章

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  [LeetCode/LintCode] Design Twitter/Mini Twitter

  ... public void postTweet(int userId, int tweetId) { if (!userMap.containsKey(userId)) userMap.put(userId, new HashSet()); userMap.get(userId).add(userId); if (!tweets.cont...

  honmaple 2019-08-14 15:31 评论0 收藏0
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  Map学习一之基本操作方法put,get,remove,containsKey

  ...{ public static void main(String[] args) { show04(); } /* boolean containsKey(Object key) 判断集合中是否包含指定的键。 包含返回true,不包含返回false */ private static void show04() { //创建Map集合对象 Map ...

  TwIStOy 2019-08-16 18:30 评论0 收藏0
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  [LeetCode] 399. Evaluate Division

  ... for (int i = 0; i < queries.length; i++) { if (!graph.containsKey(queries[i][0]) || !graph.containsKey(queries[i][1])) { res[i] = -1.0; continue...

  BlackMass 2019-08-16 13:40 评论0 收藏0
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  HashMap 浅析 —— LeetCode Two Sum 刷题总结

  ....length; i++) { int complement = target - nums[i]; if (map.containsKey(complement)) { return new int[] { map.get(complement), i }; } map.put(nums[i], i);...

  zoomdong 2019-08-16 14:40 评论0 收藏0
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  [LeetCode] 336. Palindrome Pairs

  ...++) { map.put(words[i], i); } if (map.containsKey()) { int blankIndex = map.get(); for (int i = 0; i < words.length; i++) { ...

  lentoo 2019-08-16 13:45 评论0 收藏0
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  [LeetCode] Intersection of Two Arrays I & II

  ...t(); for (int i = 0; i < nums1.length; i++) { if (!map.containsKey(nums1[i])) map.put(nums1[i], 1); else map.put(nums1[i], map.get(nums1[i])+1); } fo...

  lucas 2019-08-14 15:45 评论0 收藏0
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  leetcode355. Design Twitter

  ... */ public void postTweet(int userId, int tweetId) { if(!users.containsKey(userId)) { User user = new User(userId); users.put(userId, user); } ...

  superPershing 2019-08-16 15:35 评论0 收藏0
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  355. Design Twitter , 用23. Merge k Sorted Lists和OO

  .../ public void postTweet(int userId, int tweetId) { if(!userMap.containsKey(userId)){ User u = new User(userId); userMap.put(userId, u); } userMap...

  1fe1se 2019-08-14 18:00 评论0 收藏0
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  Java API中Msgpack支持Object类型

  ....getMessage()); } if (!isEmpty(map)) { if (map.containsKey(id)) { if (map.get(id) instanceof IntegerValue) { user.setAid(((IntegerVal...

  邹强 2019-08-14 17:20 评论0 收藏0
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  拥抱JPA规范

  ...id;//默认选择基准为Id //调整选择域 if(delta.containsKey(keyName)) keyName=(String) delta.get(keyName); for(Field field:fields){ String fieldName=field.getName(); ...

  pubdreamcc 2019-08-14 12:18 评论0 收藏0
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  [LeetCode] 588. Design In-Memory File System

  ... if (dir.length() == 0) continue; if (!node.children.containsKey(dir)) { node.children.put(dir, new File()); } node = node.children.get...

  SHERlocked93 2019-08-16 13:57 评论0 收藏0
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  49. Group Anagrams and 249. Group Shifted Strings

  ...key *= primes[c-a]; } List t; if(map.containsKey(key)){ t = res.get(map.get(key)); } else { t = new ArrayList(); ...

  cppowboy 2019-08-14 17:59 评论0 收藏0
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  Insert Delete GetRandom O(1) & Duplicates allo

  ... specified element. */ public boolean insert(int val) { if(map.containsKey(val)) return false; map.put(val, list.size()); list.add(val); return true; } ...

  2shou 2019-08-14 17:11 评论0 收藏0
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  concurrentmap并非线程安全

  if (!map.containsKey(key)) return map.put(key, value); else return map.get(key); Thread A calls containsKey and finds out that the key is not present, but is immediately suspended.Thread B cal...

  zhiwei 2019-08-14 18:44 评论0 收藏0
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  数据结构-哈希表

  ... V ret = null; TreeMap map = hashtable[hash(key)]; if(map.containsKey(key)){ ret = map.remove(key); size --; if(size < lowerTol * M...

  BingqiChen 2019-08-16 17:47 评论0 收藏0