用Lambda表达式按长度排序字符串数组

package _5_21;

 

import java.util.Arrays;

import java.util.Comparator;

 

public class TestLambda2 {

public static Comparator<String> getComparator() {

return ((o1, o2) -> o1.length() - o2.length()); // Sort by length

}

 

public static void main(String[] args) {

String[] strs = {"aaa", "bbbbbb", "cc", "dddd"};

System.out.println(Arrays.toString(strs));

Arrays.sort(strs, getComparator());

System.out.println(Arrays.toString(strs));

}

}