Python入门100题之015：统计单词

题目：

输入一行文本，统计单词数量，输出结果。

视频教程：

Python入门100题之015：统计单词

代码1：

words = input('输入文本：').split()
freq = {}
for word in words:
    freq[word] = freq.get(word, 0) + 1

words = list(freq.items())
words.sort(key=lambda e: e[1])

for w in words:
    print("%10s: %d" % w)

代码2：

words = input('输入文本：').split()
freq = {}
for word in words:
    freq[word] = words.count(word)

words = list(freq.items())
words.sort(key=lambda e: e[1])

for w in words:
    print("%10s: %d" % w)

代码3：

words = input('输入文本：').split()
freq = {}
for word in set(words):
    freq[word] = words.count(word)

words = list(freq.items())
words.sort(key=lambda e: e[1])

for w in words:
    print("%10s: %d" % w)