使用python和java實現數獨遊戲，有比較才有收穫哦

1、Python版

#--coding:utf-8--

import random
import itertools
from copy import deepcopy

def make_board(m=3):
    numbers = list(range(1,m**2+1))
    #可能出現的數字為1-9
    board = None
    #board是數度二維列表
    while board is None:
        board = get_board(m,numbers)
    return
 
 board

def get_board(m,numbers):
    n = m**2
    board = [[None for _ in range(n)] for _ in range(n)]
    for i,j in itertools.product(range(n),repeat=2):
        i0,j0 = i-i%m,j-j%m

        # i,j分別代表的是我們的行和列
        # i0和j0代表的是board[i][j]所在的區塊的起始位置

        random.shuffle(numbers)
        #shuffle() 方法將序列的所有元素隨機排序。
 

        for x in numbers:
            if(x not in board[i] 
            and all(row[j]!=x for row in board) 
            and all(x not in row[j0:j0+m] 
            for row in board[i0:i])):
                board[i][j] = x
                break
        else:#當迴圈正常結束時會執行else
            return None
    return
 
 board

def print_board(board,m=3):
    numbers = list(range(1,m**2+1))

    #每一行隨機把5個數字變成None
    omit = 5 #omit變數掌控著每一行被抹去的數字個數
    challange = deepcopy(board)
    for i,j in itertools.product(range(omit),range(m**2)):
        x = random.choice(numbers) - 1
        challange[x][j] = None

    spacer = "++-----+-----+-----++-----+-----+-----++-----+-----+-----++"
    print(spacer.replace('-','='))
    for i,line in enumerate(challange):
        print("||  {}  |  {}  |  {}  ||  {}  |  {}  |  {}  ||  {}  |  {}  |  {}  ||"
        .format(*(cell or ' ' for cell in line)))

        #format()函式中的 * 號，則是將所有的 cell 的不同值放入一個元組 tuple 之中，方便format函式呼叫
        if(i+1)%3==0:
            print(spacer.replace('-','='))
        else:
            print(spacer)
    return challange

Board = make_board()
print_board(Board)

效果：

2、Java版

package com.jimo;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class Shudu {

    public String[][] make_board(int m) {
        String[][] board = null;
        int n = m * m;
        List<Integer> numbers = new ArrayList<>();
        for (int i = 1; i <= n; i++) {
            numbers.add(i);
        }
        while (board == null) {
            board = get_board(m, numbers);
        }
        return board;
    }

    private String[][] get_board(int m, List<Integer> numbers) {
        int n = m * m;
        String[][] board = new String[n][n];
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                boolean ok = true;
                // 打亂順序
                Collections.shuffle(numbers);
                for (int x = 0; x < n; x++) {
                    if (isOk(numbers.get(x) + "", board, i, j, m)) {
                        board[i][j] = numbers.get(x) + "";
                        ok = false;
                        break;
                    }
                }
                if (ok) {
                    return null;
                }
            }
        }
        return board;
    }

    public void print_board(String[][] board, int m) {
        int n = m * m;
        int hard = 5;
        String[][] b = new String[n][n];
        System.arraycopy(board, 0, b, 0, board.length);
        Random rd = new Random();
        for (int i = 0; i < hard; i++) {
            for (int j = 0; j < n; j++) {
                int x = rd.nextInt(9);
                b[x][j] = null;
            }
        }
        String spacer = "+-----+-----+-----+-----+-----+-----+-----+-----+-----+";
        System.out.println(spacer);
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                if (null == board[i][j]) {
                    System.out.print("|     |");
                } else {
                    System.out.print("|  " + b[i][j] + "  |");
                }
            }
            System.out.println();
            System.out.println(spacer);
        }
    }

    /**
     * 判斷行列和9格里是否重複
     * 
     * @param x
     * @param board
     * @return
     */
    private boolean isOk(String x, String[][] board, int i, int j, int m) {
        int i0 = i - i % m, j0 = j - j % m;
        int n = m * m;
        for (int k = 0; k < n; k++) {
            if (x.equals(board[i][k]) || x.equals(board[k][j])) {
                return false;
            }
        }
        for (int k = i0; k < i; k++) {
            for (int g = j0; g < j0 + m; g++) {
                if (board[k][g].equals(x)) {
                    return false;
                }
            }
        }
        return true;
    }

    public static void main(String[] args) {
        Shudu s = new Shudu();
        int m = 3;
        String[][] b = s.make_board(m);
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 9; j++) {
                System.out.print(b[i][j] + " ");
            }
            System.out.println();
        }
        s.print_board(b, m);
    }
}

效果：

3 4 7 6 5 2 8 1 9 
5 9 6 8 3 1 4 2 7 
2 1 8 9 7 4 5 3 6 
1 3 4 7 9 5 6 8 2 
7 5 2 1 8 6 9 4 3 
6 8 9 4 2 3 1 7 5 
4 7 5 3 1 9 2 6 8 
8 2 1 5 6 7 3 9 4 
9 6 3 2 4 8 7 5 1 
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     ||     ||     ||  6  ||  5  ||     ||  8  ||  1  ||  9  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|  5  ||  9  ||  6  ||     ||     ||     ||  4  ||     ||  7  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|  2  ||     ||     ||  9  ||  7  ||  4  ||  5  ||     ||  6  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|  1  ||  3  ||  4  ||  7  ||  9  ||     ||  6  ||     ||     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     ||  5  ||  2  ||  1  ||     ||     ||     ||  4  ||     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     ||     ||     ||     ||  2  ||  3  ||     ||  7  ||     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|  4  ||  7  ||     ||     ||  1  ||  9  ||     ||  6  ||  8  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     ||  2  ||  1  ||  5  ||  6  ||  7  ||     ||     ||  4  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|  9  ||  6  ||     ||     ||     ||     ||     ||  5  ||  1  |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+

可以看出java的程式碼量是python的兩倍