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]get a slice of string in python
string = "something"
slice = string[0:3] # will be "som"
slice = string[0:-3] # will be "someth"
slice = string[3:] # will be "thing"
slice = string[:3] # same as first slice
slice = string[::2] # will be "smtig" -- it goes 2 step each timepython 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 slicing
my_string = "Hey, This is a sample text"
print(my_string[2:]) #prints y, This is a sample text
print(my_string[2:7]) #prints y, Th excluding the last index
print(my_string[2::2]) #prints y hsi apetx
print(my_string[::-1]) #reverses the string => txet elpmas a si sihT ,yeHCopyright © 2021 Codeinu
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