一种武器

public static void main(String[] args) { HashMap map = new HashMap(); map.put("张三", "四川"); map.put("李四", "四川"); map.put("王五", "广东"); map.put("... Read More

int[] arr = {1,2,3,4,5,6,8,5,9}; //常规for循环 for (int i = 0; i < arr.length; i++) { System.out.print(arr[i]+" "); } System.out.println(); //JD... Read More