下面哪个是正确的,请附带对错说明
a。int a[][] = new int[][3];
b。int a[][] = {{1,3},{2,3,4},{1,2,3}};
c。String s[][] = new String[2][];
d。String s[][] = new {{"can","I"},{"help","you"}};
a。int a[][] = new int[][3];
b。int a[][] = {{1,3},{2,3,4},{1,2,3}};
c。String s[][] = new String[2][];
d。String s[][] = new {{"can","I"},{"help","you"}};
数组定义时必须明确其大小
二维及以上类推
所以a错
d多了new
c肯定对
b不清楚
b对 初始化
d错 new删掉
String s[][] = new String[]{{"can","I"},{"help","you"}};
D是改这样,
String s[][] = new String[][]{{"can","I"},{"help","you"}};