lvdingding的专栏

package suanfa; import java.util.Arrays; import java.util.HashMap; import java.util.Map; public class Solution2 { public int[] twoSum(int[] nums, int target) { Map<Integer, Integer> map = new HashMap<>(); for (int i = 0;.

package ruoyu; import java.sql.SQLOutput; import java.util.Collection; import java.util.HashMap; import java.util.Set; public class Demo01 { public static void main(String[] args) { HashMap map = new HashMap(); map.put( "s01","张三" );.