What is the best / most efficient way to find the total number of Values in a HashMap.
I do not mean the .size() method as it counts the number of keys. I want the total number of values in all the keys.
I want to do so as my key is a String, but my value is a List.
import java.util.HashMap;
public class Solution {
public static void main(String args[]) {
int total = 0;
HashMap<String,String> a = new HashMap<String,String>();
a.put("1.","1");
a.put("2.","11");
a.put("3.","21");
a.put("4.","1211");
a.put("5.","111221");
for (String l : a.values()) {
total ++;
}
System.out.println(total);
}
}