擅长:python、mysql、java
<p>你要做的是不更换样品。尝试使用<a href="http://docs.python.org/3/library/random.html?highlight=random#random.sample" rel="nofollow">^{<cd1>}</a></p>
<pre><code>import random
...
def addmines(countMines):
countRows = len(mat1)
countCols = len(mat1[0])
countCells = countRows * countCols
indices = random.sample(range(countCells), countMines)
rowColIndices = [(i // countRows, i % countRows) for i in indices]
for rowIndex, colIndex in rowColIndices:
mat1[rowIndex][colIndex] = 'b'
</code></pre>