{"push_id":735314101,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"218227f65879a5c16050c011e61721a2fb5d5b19","before":"c1c22d22c49f274a9c6a5b5d954439d213e744e1","commits":[{"sha":"218227f65879a5c16050c011e61721a2fb5d5b19","author":{"email":"f44a625c4babdfc422ab86ad8d781fc72c5fe3a2@163.com","name":"ytian"},"message":"binary tree preorder traversal","distinct":true,"url":"https://api.github.com/repos/yhliaoluan/leetcode/commits/218227f65879a5c16050c011e61721a2fb5d5b19"}]}