Question

编写一个程序,打印输出二维数组arr[ ][ ]={{4,7,2,9},{8,5,1,0},{1,8,2,6},{6,5,4,2}}每一 列的最小值.

Answer 1

public class MySortNew {

public static void main(String[] args) {
int [][] arr={{4,7,2,9},{8,5,1,0},{1,8,2,6},{6,5,4,2}};
for (int i = 0; i < arr.length; i++) {
System.out.print(getMax(arr[i])+" -----" +getMin(arr[i]));
System.out.println();
}
}
/**
* 求数组中最大值
* @param arr
* @return
*/
public static int getMax(int[] arr) {
int max = Integer.MIN_VALUE;

for(int i = 0; i < arr.length; i++) {
if(arr[i] > max)
max = arr[i];
}

return max;
}

/**
* 求数组中最小值
* @param arr
* @return
*/
public static int getMin(int[] arr) {
int min = Integer.MAX_VALUE;

for(int i = 0; i < arr.length; i++) {
if(arr[i] < min)
min = arr[i];
}

return min;
}
}

试试应该OK的