并给二维数组的第0行赋值1,2,3,4,5,6,7,8,第1行赋值9,10,11,12,13,14,15,16,依此类推。显示二维数组每行的元素,求每一行的和并输出。
int [][] arr = new int[8][8];
int num = 1;
for( int i = 0; i < 8; i++ ){
for( int j = 0; j < 8; j++ ){
arr[i][j] = num;
num += 1;
}
}
// 输出每一行
for( int i = 0; i < 8; i++ ){
for( int j = 0; j < 8; j++ ){
System.out.print( "\t" + arr[i][j] );
}
System.out.println("");
}
// 求每行的和
for( int i = 0; i < 8; i++ ){
int sum = 0;
for( int j = 0; j < 8; j++ ){
sum += arr[i][j];
}
System.out.println( "第" + ( i + 1 ) + "行的和为:" + sum );
}
int num = 1;
for( int i = 0; i < 8; i++ ){
for( int j = 0; j < 8; j++ ){
arr[i][j] = num;
num += 1;
}
}
// 输出每一行
for( int i = 0; i < 8; i++ ){
for( int j = 0; j < 8; j++ ){
System.out.print( "\t" + arr[i][j] );
}
System.out.println("");
}
// 求每行的和
for( int i = 0; i < 8; i++ ){
int sum = 0;
for( int j = 0; j < 8; j++ ){
sum += arr[i][j];
}
System.out.println( "第" + ( i + 1 ) + "行的和为:" + sum );
}
温馨提示:答案为网友推荐,仅供参考