Revert "Palindrome2"

This reverts commit 75f33bccbcd5248e35fc478ae603a6c49e089c1c.
Revert "Revert "Palindrome2""

This reverts commit 565966ef029ae2d99c237c38b13acdea1009ccae.
Revert "Revert "Revert "Palindrome2"""

This reverts commit f670465c17f461b5b4dd88163ec330257d6067d2.
Revert "Revert "Revert "Revert "Palindrome2""""

This reverts commit 39211f5b07f44a53c242ab0c5369f7c56d76820c.
Merge branch 'master' of https://github.com/nklijia/LeetCode