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寫一個 Python 程序來計算字符串中的字符的出現(xiàn)次數,并給出一個實例。這個 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 來迭代一個字符串中的每個字符。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,則計數=計數+ 1。
字符串=教程網關 ch = t 計數= 0
對于循環(huán)第一次迭代:對于范圍(11)中的 I,如果(字符串[i] == char) 如果(t = = t)–條件為真。 計數= 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:對于范圍(11)中的 2,如果(字符串[2] == char) = >如果(t = = t)–條件為真。 計數= 1 + 1 = > 2
對剩余的程序迭代進行同樣的操作
計算字符出現(xiàn)次數的 Python 程序示例 2
這個 Python 計算字符串程序中一個字符的總出現(xiàn)次數與上面相同。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計算字符總出現(xiàn)次數的 Python 程序示例 3
給定字符程序的 Python 總出現(xiàn)次數與第一個示例相同。但是,這一次,我們使用了函數的概念來分離邏輯。
# 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 網頁標題:Python程序:計算字符串中的字符出現(xiàn)次數
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