python计算书页码的统计数字问题实例

本文实例讲述了python计算书页码的统计数字问题，是Python程序设计中一个比较典型的应用实例。分享给大家供大家参考。具体如下：

问题描述：对给定页码n，计算出全部页码中分别用到多少次数字0,1,2,3,4…,9

实例代码如下：

def count_num1(page_num): 
  num_zero = 0 
  num_one = 0 
  num_two = 0 
  num_three = 0 
  num_four = 0 
  num_five = 0 
  num_six = 0 
  num_seven = 0 
  num_eight = 0 
  num_nine = 0 
  page_list = range(1,page_num + 1) 
  for page in page_list: 
    page = str(page) 
    num_zero += page.count(\'0\') 
    num_one += page.count(\'1\') 
    num_two += page.count(\'2\') 
    num_three += page.count(\'3\') 
    num_four += page.count(\'4\') 
    num_five += page.count(\'5\') 
    num_six += page.count(\'6\') 
    num_seven += page.count(\'7\') 
    num_eight += page.count(\'8\') 
    num_nine += page.count(\'9\') 
  result = [num_zero,num_one,num_two,num_three,num_four,num_five,num_six,num_seven,num_eight,num_nine] 
  return result 
 
print count_num1(13) 

上面这段代码略显臃肿，所以改了下代码。

改后的代码如下：

def count_num2(page_num): 
  page_list = range(1,page_num + 1) 
  result = [0 for i in range(10)] 
  for page in page_list: 
    page = str(page) 
    for i in range(10): 
      temp = page.count(str(i)) 
      result[i] += temp 
  return result
print count_num2(13)

本文实例测试运行环境为Python2.7.6

程序输出结果为：

[1, 6, 2, 2, 1, 1, 1, 1, 1, 1]

希望本文所述对大家的Python程序设计有所帮助。