java实现——003二维数组中的查找

 import java.util.Scanner;

 public class T003 {

     public static void main(String[] args) {
         Scanner in = new Scanner(System.in);
         int rows = 0, cols = 0;
         rows = in.nextInt();
         cols = in.nextInt();
         int a[][] = new int[rows][cols];
         for (int i = 0; i < rows; i++) {
             for (int j = 0; j < cols; j++) {
                 a[i][j] = in.nextInt();
             }
         }
         System.out.println(find(a, rows, cols, 7));
     }

     public static boolean find(int a[][], int rows, int cols, int f) {
         boolean found = false;
         int row = 0;
         int col = cols - 1;
         while (row < rows && col >= 0) {
             if (a[row][col] == f) {
                 found = true;
                 break;
             } else if (a[row][col] > f) {
                 --col;
             } else {
                 ++row;
             }
         }
         return found;
     }
 }