Update README.md

Author: shrinathjoshi

README.md

@@ -62,11 +62,13 @@
 ### August Challenge ###
 | Day  | Problem Statement  | Solution   | Difficulty   | Data Structure Used  | Algorithm used  | Time Complexity | Space Complexity | Additional Reading 
 |---|---|---|---|---|---|---|---|---|
-| 4  | [Hamming Distance](leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/)  | [Hamming Distance](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/July%20Challenge/com/leetcode/JulyChallenge/week1/HammingDistance.java)  | Easy  | NA  | Bit Manipulation  | O(1)  | O(1)  | https://www.techiedelight.com/brian-kernighans-algorithm-count-set-bits-integer/ |
-| 5  | [Plus One](leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/)  | [Plus One](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/July%20Challenge/com/leetcode/JulyChallenge/week1/PlusOne.java)  | Easy  | NA | NA  | O(N)  | O(1)  | [Back To Back SWE](https://www.youtube.com/watch?v=vA0t42qwKO0) |
+| 1  | [Hamming Distance](leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/)  | [Hamming Distance](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/July%20Challenge/com/leetcode/JulyChallenge/week1/HammingDistance.java)  | Easy  | NA  | Bit Manipulation  | O(1)  | O(1)  | https://www.techiedelight.com/brian-kernighans-algorithm-count-set-bits-integer/ |
+| 2  | [Plus One](leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/)  | [Plus One](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/July%20Challenge/com/leetcode/JulyChallenge/week1/PlusOne.java)  | Easy  | NA | NA  | O(N)  | O(1)  | [Back To Back SWE](https://www.youtube.com/watch?v=vA0t42qwKO0) |
+| 3  | [Valid Palindrome](https://leetcode.com/explore/challenge/card/august-leetcoding-challenge/549/week-1-august-1st-august-7th/3411/)  | [Plus One](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/August%20Challenge/com/leetcode/AugustChallenge/week1/ValidPalindrome.java)  | Easy  | NA | NA  | O(N)  | O(1)  | |
+| 4  | [Plus One](leetcode.com/explore/challenge/card/july-leetcoding-challenge/544/week-1-july-1st-july-7th/3381/)  | [Plus One](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/July%20Challenge/com/leetcode/JulyChallenge/week1/PlusOne.java)  | Easy  | NA | NA  | O(N)  | O(1)  | [Back To Back SWE](https://www.youtube.com/watch?v=vA0t42qwKO0) |
 
 
-###Daily Coding Challenge ###
+### Daily Coding Challenge ###
 | Day  | Problem Statement  | Solution   | Difficulty   | Data Structure Used  | Algorithm used  | Time Complexity | Space Complexity | 
 |---|---|---|---|---|---|---|---|
 | 1  | [442. Find All Duplicates in an Array](https://leetcode.com/problems/find-all-duplicates-in-an-array/)  | [Java](https://github.com/shrinathjoshi/Leetcode-30-day-challenge/blob/master/Daily%20Coding%20Challenge/FindAllDuplicatesInAnArray.java)  | Medium  | NA  | NA  | O(n)  |O(1)  |