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Writing a "Chessboard" function in Python that prints out requested length of binary(用Python编写一个“棋盘”函数，打印出所请求的二进制长度)

转载 作者：bug小助手 更新时间：2023-10-22 14:29:52 33 4
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I have an assignment for my Python course that I'm struggling with.

我有一项Python课程的作业，我正在努力完成。


We are supposed to make a function that prints out binary as follows:

我们应该制作一个打印二进制文件的函数，如下所示：


If the input is:

如果输入为：


chessboard(3)

It should print out:

它应该打印出来：


101
010
101

And so forth..

等等


Its a "simple" program but I'm really new to coding.

这是一个“简单”的程序，但我对编码真的很陌生。


I can produce a while loop that writes out the correct length and amount of lines but I'm struggling to produce variation between the lines.

我可以生成一个while循环，写出正确的行长度和数量，但我很难在行之间产生变化。


This is what I have come up with so far:

这就是我到目前为止所想到的：


def chessboard(n):
height = n
length = n
while height > 0:
    while length > 0:
        print("1", end="")
        length -= 1
        if length > 0:
            print("0", end="")
            length -= 1
    height -= 1
    if length == 0:
        break
    else:
        print()
        length = n

With the input:

输入：


chessboard(3)

It prints out:

它打印出：


101
101
101

Could someone help me figure out how I could start every other line with zero instead of one?

有人能帮我想办法让我每隔一行都用零而不是一开头吗？


更多回答

Welcome to Stack Overflow! Please take the tour, read what's on-topic here, How to Ask, and the question checklist, provide a minimal reproducible example, and ask a specific question about your problem. "Can Someone Help Me?" is not a valid SO question.

欢迎使用Stack Overflow！请参观，阅读这里的主题、如何提问和问题清单，提供一个可重复的最小示例，并就您的问题提出一个具体问题。“有人能帮我吗？”不是一个有效的SO问题。

You should edit your question to be a minimal reproducible example. That includes your code, some input and expected output. All in text so they can be copied/pasted. It looks like 1 and 0 mean black and white? That's not immediately clear, so would be a good detail to add to your post!

你应该把你的问题编辑成一个最小的可重复的例子。其中包括您的代码、一些输入和预期输出。全部为文本，以便可以复制/粘贴。看起来1和0意味着黑色和白色？这还不清楚，所以添加到你的帖子中会是一个很好的细节！

@sc0rched that's good information to add your post, use the edit button!

@sc0ched这是很好的信息添加你的帖子，使用编辑按钮！

Your function needs only two lines of code. First: text = '10' * n. Second: print('\n'.join(text[:n] if line % 2 else text[1:][:n] for line in range(n)))

您的函数只需要两行代码。第一个：text='10'*n。第二个：print（'\n'.join（如果第%2行为text[：n]，如果第（n）行为text[1:][:n]）

优秀答案推荐

As I understand it, it is simple :

据我所知，这很简单：


print("stackoverflow")

def chessboard(n):
    finalSentence1 = ""
    finalSentence2 = ""
    for i in range(n): #we add 0 and 1 as much as we have n
        if i%2 == 0: #
            finalSentence1 += "1"
            finalSentence2 += "0"
        else:
            finalSentence1 += "0"
            finalSentence2 += "1"


    for i in range(n): #we print as much as we have n
        if i%2 == 0:
            print(finalSentence1)
        else:
            print(finalSentence2)



chessboard(3)

returns :

退货：


stackoverflow
101
010
101


I am working on the same kind of assignment, but as we have only covered conditional statements and while loops so far, following the same logic, here is my solution:

我正在处理同样的赋值，但由于到目前为止我们只讨论了条件语句和while循环，遵循相同的逻辑，以下是我的解决方案：


def chessboard(size):

 output_1 = ''
 output_2 = ''
 i = 1
 j = 1

 while j <= size:

   while i <= size:
        
        if i % 2 == 0:
            output_1 += '1'
            output_2 += '0'
            i += 1
        else:
            output_1 += '0'
            output_2 += '1'
            i += 1

    if j % 2 == 0:
        print(output_1)
        j += 1
    else:
        print(output_2)
        j += 1

chessboard(5)

returns:

退货：


10101
01010
10101
01010
10101


def chessboard(x):
    i = 0
    while i < x:
        if i % 2 == 0:
            row = "10"*x
        else:
            row = "01"*x
        print(row[0:x])
        i += 1


def chessboard(n):
    board = []
    for i in range(n):
        row = []
        for j in range(n):
            row.append('1' if (i+j)%2 == 0 else '0')
        board.append(row)
    return '\n'.join(''.join(row) for row in board)

print(chessboard(3))

Output

输出


101
010
101

更多回答

Thank you so much! This is exactly what I was looking for!

非常感谢！这正是我想要的！

I strongly advise you to understand what is written, and not only copy paste what is written :) You're welcome.

我强烈建议你理解所写的内容，而不仅仅是复制粘贴所写的：）不客气。

I will look in to how to write for loops in range straight away and how you used the remainder as an if statement.

我将研究如何直接为范围内的循环编写，以及如何将余数用作if语句。

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