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Update 04_strings.md #165

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8 changes: 4 additions & 4 deletions 04_Day_Strings/04_strings.md
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Original file line number Diff line number Diff line change
Expand Up @@ -328,16 +328,16 @@ print(challenge.expandtabs(10)) # 'thirty days of python'

```py
challenge = 'thirty days of python'
print(challenge.find('y')) # 16
print(challenge.find('th')) # 17
print(challenge.find('y')) # 5
print(challenge.find('th')) # 0
```

- rfind(): Returns the index of the last occurrence of a substring, if not found returns -1

```py
challenge = 'thirty days of python'
print(challenge.rfind('y')) # 5
print(challenge.rfind('th')) # 1
print(challenge.rfind('y')) # 16
print(challenge.rfind('th')) # 17
```

- format(): formats string into a nicer output
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