python3 return a list of indexes of a specific character in a string
string='mississippi'
s='s'
lst= []
for i in range(len(string)):
if (string[i] == s):
lst.append(i)
print(lst)
#result: [2, 3, 5, 6]python3 return a list of indexes of a specific character in a string
string='mississippi'
s='s'
lst= []
for i in range(len(string)):
if (string[i] == s):
lst.append(i)
print(lst)
#result: [2, 3, 5, 6]python string indexing
str = 'codegrepper'
# str[start:end:step]
#by default: start = 0, end = len(str), step = 1
print(str[:]) #codegrepper
print(str[::]) #codegrepper
print(str[5:]) #repper
print(str[:8]) #codegrep
print(str[::2]) #cdgepr
print(str[2:8]) #degrep
print(str[2:8:2]) #dge
#step < 0 : reverse
print(str[::-1]) #reppergedoc
print(str[::-3]) #rpgo
# str[start:end:-1] means start from the end, go backward and stop at start
print(str[8:3:-1]) #ppergpython string index of
sentence = 'Python programming is fun.'
result = sentence.index('is fun')
print("Substring 'is fun':", result)
result = sentence.index('Java')
print("Substring 'Java':", result)Copyright © 2021 Codeinu
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