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創(chuàng)新互聯(lián)Python教程：
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寫一個(gè) Python 程序來計(jì)算字符串中的字符的出現(xiàn)次數(shù)，并給出一個(gè)實(shí)例。這個(gè) python 程序允許您輸入字符串和字符。
# 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)這里，我們使用 For Loop 來迭代一個(gè)字符串中的每個(gè)字符。在 Python For Loop 中，我們使用 If 語句來檢查字符串中的任何字符是否等于給定的字符。如果為真，則計(jì)數(shù)=計(jì)數(shù)+ 1。
字符串=教程網(wǎng)關(guān) ch = t 計(jì)數(shù)= 0
對(duì)于循環(huán)第一次迭代:對(duì)于范圍(11)中的 I，如果(字符串[i] == char) 如果(t = = t)–條件為真。 計(jì)數(shù)= 0 + 1 = > 1
第二次迭代:如果(u = = l)–條件為假，范圍(11) 中的 1。
第三次迭代:對(duì)于范圍(11)中的 2，如果(字符串[2] == char) = >如果(t = = t)–條件為真。 計(jì)數(shù)= 1 + 1 = > 2
對(duì)剩余的程序迭代進(jìn)行同樣的操作
計(jì)算字符出現(xiàn)次數(shù)的 Python 程序示例 2
這個(gè) Python 計(jì)算字符串程序中一個(gè)字符的總出現(xiàn)次數(shù)與上面相同。然而，我們只是將 For 循環(huán)替換為 While 循環(huán)。
# 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)字符串輸出中 python 字符的出現(xiàn)
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計(jì)算字符總出現(xiàn)次數(shù)的 Python 程序示例 3
給定字符程序的 Python 總出現(xiàn)次數(shù)與第一個(gè)示例相同。但是，這一次，我們使用了函數(shù)的概念來分離邏輯。
# 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)字符串輸出中 python 字符的出現(xiàn)
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分享題目：Python程序：計(jì)算字符串中的字符出現(xiàn)次數(shù)
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