[英]common letters in two strings
我一直在嘗試解決這個程序,它接受兩個字符串作為輸入並輸出常用字母數。 例如,如果輸入是“common”和“connor”,則輸出應為4(1 c,1 n和2 o)。我使用set()函數但輸出3(它將兩個o視為單個公共信件 )。 任何幫助將不勝感激。謝謝!
順便說一下這是我寫的代碼:
print("Enter number of inputs: ")
c = int(input())
store = []
for each_item in range(c):
print("Enter First String: ")
one = input()
print("Enter Second String")
two = input()
s = len(set(one) & set(two))
store.append(s)
for each_number in store:
print(each_number)
>>> from collections import Counter
>>> Counter('common')
Counter({'m': 2, 'o': 2, 'c': 1, 'n': 1})
>>> Counter('connor')
Counter({'o': 2, 'n': 2, 'c': 1, 'r': 1})
>>> common = Counter('common') & Counter('connor') # intersection
>>> common
Counter({'o': 2, 'c': 1, 'n': 1})
>>> sum(common.values())
4
你也可以做列表理解
>>> a = 'common'
>>> b = 'connor'
>>> sum([1 for l in a if l in b])
4
編輯
a,b = 'come','common'
def collision_count(a,b):
da = {l:a.count(l) for l in a}
db = {l:b.count(l) for l in b}
return sum(min(v,db[k]) for k,v in da.items() if k in db.keys())
print collision_count(a,b)
3
你現在好嗎?
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