LeetCode #129 Sum Root to Leaf Numbers 求根到叶子节点数字之和
129SumRoottoLeafNumbers求根到叶子节点数字之和Description:Givenabinarytreecontainingdigitsfrom0-9only,eachroot-to-leafpathcouldrepresentanumber.Anexampleistheroot-to-leafpath1->2->3whichrepresentsthenumber123.Fin