java语言二维数组中分别求每个数组元素的和答:直接循环获取值之后做和即可。举例:int list[][]={{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15}}; for(int i=0;i<list.length;i++){ int sum = 0; for(int j=0;j<list[i].length;sum+=list[i][j],j++); System.out.println(sum+"\n"); } 运...
已知一个二维数组a[3][4]={1,2,3,4,5,6,7,8,9,10,11,12},求出所有元素...答:public static void main(String[] args) { Integer[] num={1,2,3,4,5,6,7,8,9,10,11,12};int sum=0;for(int i=0;i<num.length;i++){ sum+=num[i];} int avg=sum/num.length;for(int i=0;i<num.length;i++){ if(num[i]>avg){ System.out.println(num[i]+" 下标...
c语言求二维数组中所有元素的和答:int main(void){ int ar[3][3]= { {1,2,3},{4,5,6},{7,8,9} };int num;int i,j;int k = 0,sum=0;int (*ptr)[3];ptr = ar;num = sizeof(ar) / sizeof(ar[0]);printf("num = %d\n",num);printf("%d\n",*(*(ptr +0) + 1));for(i = 0; i < 3...