@@ -376,6 +376,46 @@ def get_vowels(string):
376376get_vowels(' foobar' # ['o', 'o', 'a']
377377get_vowels(' gym' # []
378378```
379+ 380+ ### Length of Last Word in a string
381+ This method gets the length of last word in a given string.
382+ ```
383+ def lengthOfLastWord(self, s: str) -> int:
384+ if(s.split()):
385+ lst=s.split()
386+ last=lst[-1]
387+ return len(last)
388+ return 0
389+ ```
390+ ### Valid Palindrome
391+ This method returns a bool value specifying whether a string is palindromic or not.
392+ ```
393+ def isPalindrome(self, s: str) -> bool:
394+ s = [ x.lower() for x in s if x.isalnum() ]
395+ return s == s[::-1]
396+ ```
397+ ### Check Lowercase
398+ This method checks if a string is in lower case or not.
399+ ```
400+ def toLowerCase(self, str):
401+ """
402+ :type str: str
403+ :rtype: str
404+ """
405+ return str.lower()
406+ ```
407+ ### Count Negatives in a sorted Matrix
408+ This method returns the count of negative numbers in a sorted matrix.
409+ ```
410+ def countNegatives(self, grid: List[List[int]]) -> int:
411+ count = 0
412+ for num in grid:
413+ for n in num:
414+ if n < 0:
415+ count += 1
416+ return count
417+ ```
418+ 379419### Write to file
380420This method takes in the `` name of file `` and `` content `` then write the content into the file. If the file doesn't exist then it creates the file.
381421``` python
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