写一个 Python 程序来计算字符串中的字符的出现次数，并给出一个实例。这个 python 程序允许您输入字符串和字符。
# Python Program to Count Occurrence of a Character in a String
string = input("Please enter your own String : ")
char = input("Please enter your own Character : ")
count = 0
for i in range(len(string)):
if(string[i] == char):
count = count + 1
print("The total Number of Times ", char, " has Occurred = " , count)这里，我们使用 For Loop 来迭代一个字符串中的每个字符。在 Python For Loop 中，我们使用 If 语句来检查字符串中的任何字符是否等于给定的字符。如果为真，则计数=计数+ 1。
字符串=教程网关
ch = t
计数= 0
对于循环第一次迭代:对于范围(11)中的 I，如果(字符串[i] == char)
如果(t = = t)–条件为真。
计数= 0 + 1 = > 1
第二次迭代:如果(u = = l)–条件为假，范围(11)
中的 1。
第三次迭代:对于范围(11)中的 2，如果(字符串[2] == char) = >如果(t = = t)–条件为真。
计数= 1 + 1 = > 2
对剩余的程序迭代进行同样的操作
计算字符出现次数的 Python 程序示例 2
这个 Python 计算字符串程序中一个字符的总出现次数与上面相同。然而，我们只是将 For 循环替换为 While 循环。
# Python Program to Count Occurrence of a Character in a String
string = input("Please enter your own String : ")
char = input("Please enter your own Character : ")
i = 0
count = 0
while(i < len(string)):
if(string[i] == char):
count = count + 1
i = i + 1
print("The total Number of Times ", char, " has Occurred = " , count)字符串输出中 python 字符的出现
Please enter your own String : python programs
Please enter your own Character : p
The total Number of Times p has Occurred = 2
>>>
Please enter your own String : hello
Please enter your own Character : l
The total Number of Times l has Occurred = 2计算字符总出现次数的 Python 程序示例 3
给定字符程序的 Python 总出现次数与第一个示例相同。但是，这一次，我们使用了函数的概念来分离逻辑。
# Python Program to Count Occurrence of a Character in a String
def count_Occurrence(ch, str1):
count = 0
for i in range(len(string)):
if(string[i] == char):
count = count + 1
return count
string = input("Please enter your own String : ")
char = input("Please enter your own Character : ")
cnt = count_Occurrence(char, string)
print("The total Number of Times ", char, " has Occurred = " , cnt)字符串输出中 python 字符的出现
Please enter your own String : Python tutorial
Please enter your own Character : t
The total Number of Times t has Occurred = 3
>>>
Please enter your own String : hi
Please enter your own Character : g
The total Number of Times g has Occurred = 0原创文章，作者：简单一点，如若转载，请注明出处：https://www.506064.com/n/130291.html
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