tree 7627e7d523cb1feabaec1ac1a3bf94467f9c9d12
parent 3e96fddccfa3e736528ae9fe83051877cbc60967
author zhongwencool <zhognwencool@gmail.com> 1468435216 +0800
committer zhongwencool <zhognwencool@gmail.com> 1468438316 +0800

optimize find top n in a list method