#!/usr/bin/python
# -*- coding: UTF-8 -*-
width = int(raw_input('输入对角线长度: '))
for row in range(width + 1):
for col in range(width + 1):
if ((abs(row - width/2) + abs(col - width/2)) == width/2):
print "*",
else:
print " ",
print " "
915Python for 循环语句
冒泡排序,来至于高学军:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# 冒泡排序# 定义列表 list
arays = [1,8,2,6,3,9,4]
for i in range(len(arays)):
for j in range(i+1):
if arays[i] < arays[j]:
# 实现连个变量的互换
arays[i],arays[j] = arays[j],arays[i]
print arays
914Python for 循环语句
#!/usr/bin/python
# -*- coding: UTF-8 -*-
'''在python中,for循环后的in跟随一个序列的话,循环每次使用的序列元素,而不是序列
的下标'''
s = 'qazxswedcvfr'
for i in range(0,len(s),2):
print s[i]
'''enumerate() :
在每次循环中,可以同时得到下标和元素
际上,enumerate(),在每次循环中返回的是包含每个元素的定值表,两个元素分别赋值
index,char'''
for (index,char) in enumerate(s):
print "index=%s ,char=%s" % (index,char)
913Python for 循环语句
打印1-9三角形阵列:
#!/usr/bin/python
# -*- coding: UTF-8 -*-
for i in range(1,11):
for k in range(1,i):
print k,
print "\n"
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# 打印空心等边三角形
rows = int(raw_input('输入行数:'))
for i in range(0, rows):
for k in range(0, 2 * rows - 1):
if (i != rows - 1) and (k == rows - i - 1 or k == rows + i - 1):
print " * ",
elif i == rows - 1:
if k % 2 == 0:
print " * ",
else:
print " ",
else:
print " ",
print "\n"
916Python for 循环语句
更多实例:python 打印菱形、三角形、矩形的代码感觉,写的有点复杂了,如果让你画圆或者其他图形呢?
其实运用数学公式,就可以了。比如菱形 |x - w/2| + |y - w/2| = w/2 轻松搞定。
915Python for 循环语句
冒泡排序,来至于高学军:
914Python for 循环语句
913Python for 循环语句
打印1-9三角形阵列:
输出结果:
912Python for 循环语句
打印空心等边三角形: