【Java每日一題】20161101

package Nov2016;

import java.util.HashMap;
import java.util.Map;

public class Ques1101 {

    public static void main(String[] args) {

        HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();

        for (int i = 0; i < 100; i++) {
            map.put(i, i);
        }

        // 遍歷1
        for (Integer key : map.keySet()) {
            Integer value = map.get(key);
            System.out.println(key+"---"+value);
        }

        // 遍歷2
        for (Map.Entry<Integer, Integer> entry : map.entrySet()) {
            Integer key = entry.getKey();
            Integer value = entry.getValue();
            System.out.println(key+"---"+value);
        }
    }
}

今日問題： 
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