在此程序中,给定用户输入字符串。我们必须计算该字符串中的元音数量。在这里,我们在Python中使用set。Set是可迭代,可变且无重复元素的无序集合数据类型。
Input str1=pythonprogram Output 3
Step 1: first we use one counter variable which is used to count the vowels in the string. Step 2: creating a set of vowels. Step 3: then traverse the every alphabet in the given string. Step 4: if alphabet is present in the vowel set then counter incremented by 1. Step 5: After the completion of traversing print counter variable.
# Program to count vowel in # a string using set def countvowel(str1): c = 0 # Creating a set of vowels s="aeiouAEIOU" v = set(s) # Loop to traverse the alphabet # in the given string for alpha in str1: # If alphabet is present # in set vowel if alpha in v: c = c + 1 print("No. of vowels ::>", c) # Driver code str1 = input("Enter the string ::>") countvowel(str1)
输出结果
Enter the string ::>pythonprogram No. of vowels ::> 3