擅长:python、mysql、java
<p>给你。这将打印树</p>
<pre><code>def tree(n):
# total spaces
k = 2 * n - 2
# number of rows
i = 0
while i < n:
j = 0
# inner loop for number spaces
while j < k:
print(end=" ")
j = j + 1
# decrementing k after loop
k = k - 1
# number of columns
j = 0
while j < i + 1:
print("* ", end="")
j = j + 1
# end line
print("\r")
i = i + 1
# Begining
n = 5
tree(n)
</code></pre>