题解 | #二叉树中和为某一值的路径(二)#
二叉树中和为某一值的路径(二)
https://www.nowcoder.com/practice/b736e784e3e34731af99065031301bca
/* function TreeNode(x) { this.val = x; this.left = null; this.right = null; } */ function FindPath(root, expectNumber) { // write code here let paths = [] if (!root) return paths const restNumber = expectNumber - root.val if (restNumber === 0) { if (root.left === null || root.right === null) { paths = [[root.val]] } else { paths = [] } } else { const leftPaths = FindPath(root.left, restNumber) const rightPaths = FindPath(root.right, restNumber) const rootPaths = leftPaths.concat(rightPaths) paths = rootPaths.map((path) => [root.val].concat(path)) } return paths } module.exports = { FindPath : FindPath };