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List set map queue deque stack
2022-07-06 13:20:00 【[email protected]】
List
Mode one :for loop
for(int i = 0;i = list.size();i++){
System.out.println(list.get(i));
}
Mode two :for each Loop traversal
for(String s : list){
System.out.println(s);
}
Mode three :iterator Iterator traversal
Iterator<String> it = list.iterator();
while(it.hasNext()){
System.out.println(it.next());
}
Set
Mode one :for each
for(String s : set){
System.out.println(s);
}
Mode two :iterator Iterator traversal
Iterator it = set.iterator();
while(it.hasNext()){
System.out.println(it.next());
}
Map
Mode one :for each Traverse Map Of key value
for(String key : map.keySet()){
Integer value = map.get(key);
System.out.println(key + "=' =value);
}
Mode two :for each At the same time through key and value
for(Map.Entry<String,Integer> entry : map.entrySet()){
String key = entry.getKey();
Integer value = entry.getValue();
System.out.println(key + "=" + value):
}
Queue queue (FIFO)
Mode one : for each Traverse the queue
for(String s : queue){
System.out.println(s);
}
Mode two :iterator Iterator traverses queue
String item = null;
while((item = queue.poll()) != null){
System.out.println(item);
}
Deque deque
iterator Iterator traversal
String item = null;
while((item = deque.poll.set()) != null){
System.out.println(item);
}
Stack Stack (LIFO)
while(!stack.isEmpty()){
System.out.println(stack.poll());
}
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本文为[[email protected] Yummy]所创,转载请带上原文链接,感谢
https://yzsam.com/2022/187/202207060916020059.html
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