Leet常用数据结构【LeetCode】

</pre><pre name="code" class="java">str.toCharArray(); str.getBytes(); String.valueOf(char c);str.charAt(index);str.startsWith(str1,k);str.replaceAll(" ","");str.substring(0,3);String[] strs = str.split(" ");Arrays.sort(chars); Arrays.copyOfRange(chars,0,3);integer.intValue();integer.toString();Integer.parseInt("12");Long.parserLong("12");map.put(key,value);map.get(key);map.containsKey();for(String s:map.keySet())Irerator it= map.entrySet().iterator();while(iterator.hasNext()){it.next().getKey(); it.next().getValue();}list.add/get("aa"); Collections.sort(list);list.toArray(new Object[list.size()]);String[] str = list.toArray(new String[list.size()]);Queue queue = new LinkedList();queue.offer/add("Hello"); queue.poll();stack.push("aa"); stack.pop(); stack.peek();set.contains/remove/add("no repeat");