摘要： **Definitionforbinarytree*structTreeNode{*intval;*TreeNode*left;*TreeNode*right;*TreeNode(intx):val(x),left(NULL),right(NULL){}/**};*/classSolution{public:boolhasPathSum(TreeNode*root,intsum){//StarttypingyourC/C++solutionbelow//DONOTwriteintmain()functionif(root){if(root->val==sum&&root- 阅读全文