Java黑皮書課后題第9章：**9.13（Location類）設計一個名為Location的類，定位二維數組中的最大值及其位置

• 題目
• • 破題
• 代碼
• • Test13
  • Test13_Location
  • 運行結果

題目

破題

Test13：測試程序
Test13_Location：實現題目要求

代碼

Test13

import java.util.Scanner;public class Test13 {public static void main(String[] args) {// 定義數組Scanner input = new Scanner(System.in);System.out.print("Enter the number of rows and columns in the array:");int rows = input.nextInt(), cols = input.nextInt();double[][] arr = new double[rows][cols];// 數組賦值System.out.println("Enter the array:");for (int a = 0 ; a < rows ; a++){for (int b = 0 ; b < cols ; b++){arr[a][b] = input.nextDouble();}}// 調用找最大值方法Test13_Location l = new Test13_Location();l = locateLargest(arr);// 輸出結果System.out.println("The location of the largest elements is " + Test13_Location.maxValue +" at (" + Test13_Location.row + ", " + Test13_Location.column + ")");}public static Test13_Location locateLargest(double[][] a){Test13_Location l = new Test13_Location();for (int m = 0 ; m < a.length ; m++){for (int n = 0 ; n < a[0].length ; n++){if (Test13_Location.maxValue < a[m][n]){Test13_Location.maxValue = a[m][n];Test13_Location.row = m;Test13_Location.column = n;}}}return l;} }

Test13_Location

public class Test13_Location {public static int row = 0, column = 0;public static double maxValue = 0.0; }

運行結果

Enter the number of rows and columns in the array:3 4 Enter the array: 23.5 35 2 10 4.5 3 45 3.5 35 44 5.5 9.6 The location of the largest elements is 45.0 at (1, 2)

總結

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