@@ -161,7 +161,7 @@ To subsitute multiple instances, wrap the right hand side in a Tuple:
161161
162162You can also do variable subsitutions with a dictionary:
163163
164- ```
164+ ``` python
165165>> > dict = { " name" " Mike" " country" " Canada"
166166>> > ' I am %(name)s and I am from %(country)s ' % dict
167167' I am Mike and I am from Canada'
@@ -428,7 +428,7 @@ get_vowels('gym') # []
428428
429429### Length of Last Word in a string
430430This method gets the length of last word in a given string.
431- ```
431+ ``` python
432432def lengthOfLastWord (self s : str ) -> int :
433433 if (s.split()):
434434 lst= s.split()
@@ -438,14 +438,14 @@ def lengthOfLastWord(self, s: str) -> int:
438438```
439439### Valid Palindrome
440440This method returns a bool value specifying whether a string is palindromic or not.
441- ```
441+ ``` python
442442def isPalindrome (self s : str ) -> bool :
443443 s = [ x.lower() for x in s if x.isalnum() ]
444444 return s == s[::- 1 ]
445445```
446446### Check Lowercase
447447This method checks if a string is in lower case or not.
448- ```
448+ ``` python
449449def toLowerCase (self str ):
450450 """
451451 :type str: str
@@ -455,7 +455,7 @@ def toLowerCase(self, str):
455455```
456456### Count Negatives in a sorted Matrix
457457This method returns the count of negative numbers in a sorted matrix.
458- ```
458+ ``` python
459459def countNegatives (self grid : List[List[int ]]) -> int :
460460 count = 0
461461 for num in grid:
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