int sum =0; int[][] b={{11},{21,22},{31,32,33}} ; for(int i=0;i<b.lengh;i++) for(int j=0;j<b[i].length;j++) sum+=b[i][j]; System.out.println(sum); //以上代码仅供参考,未做测试。
学了Java就要把它用起来,这里是for-each在二维数组中的用法 public static void main( String[] args ) { int[][] b = { { 11 }, { 21, 22 }, { 31, 32, 33 } }; int sum = 0; for ( int[] is : b ) { for ( int i : is ) { sum += i; } } System.out.println( sum ); }
for ( int[] is : b ) 和for ( int i : is )怎么理解哦..
int sum = 0; int[][] b={{11},{21,22},{31,32,33}} ; for(int i=0;i<b.lengh;i++){ for(int j=0;j<b[i].length;j++) sum += b[i][j]; } System.out.println("Sum:" + sum);
int[][] b={{11},{21,22},{31,32,33}} ;
for(int i=0;i<b.lengh;i++)
for(int j=0;j<b[i].length;j++)
sum+=b[i][j];
System.out.println(sum);
//以上代码仅供参考,未做测试。
public static void main( String[] args )
{
int[][] b = { { 11 }, { 21, 22 }, { 31, 32, 33 } };
int sum = 0;
for ( int[] is : b )
{
for ( int i : is )
{
sum += i;
}
}
System.out.println( sum );
}
for ( int[] is : b )
和for ( int i : is )怎么理解哦..
int sum = 0;
int[][] b={{11},{21,22},{31,32,33}} ;
for(int i=0;i<b.lengh;i++){
for(int j=0;j<b[i].length;j++)
sum += b[i][j];
}
System.out.println("Sum:" + sum);