add canJump.cpp
add canJump.cpp

yiwen-luo/LeetCode,kamyu104/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,jaredkoontz/leetcode,yiwen-luo/LeetCode,kamyu104/LeetCode,githubutilities/LeetCode,githubutilities/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,tudennis/LeetCode---kamyu104-11-24-2015,tudennis/LeetCode---kamyu104-11-24-2015,jaredkoontz/leetcode,jaredkoontz/leetcode,kamyu104/LeetCode,githubutilities/LeetCode,githubutilities/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,yiwen-luo/LeetCode,githubutilities/LeetCode,kamyu104/LeetCode,jaredkoontz/leetcode,yiwen-luo/LeetCode,yiwen-luo/LeetCode,jaredkoontz/leetcode,kamyu104/LeetCode