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Merge pull request #1877 from mouWorks/patch-1

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Fix : TypeScript answer for binary-tree traversal
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程序员Carl
2023-01-30 10:05:56 +08:00
committed by GitHub
parent 2778188a2b 0df3cb0550
commit 3d9789464b
1 changed files with 3 additions and 3 deletions
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6
problems/二叉树的统一迭代法.md
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@ -536,9 +536,9 @@ function preorderTraversal(root: TreeNode | null): number[] {
curNode = helperStack.pop()!;
if (curNode !== null) {
if (curNode.right !== null) helperStack.push(curNode.right);
if (curNode.left !== null) helperStack.push(curNode.left);
helperStack.push(curNode);
helperStack.push(null);
if (curNode.left !== null) helperStack.push(curNode.left);
} else {
curNode = helperStack.pop()!;
res.push(curNode.val);
@ -579,9 +579,9 @@ function postorderTraversal(root: TreeNode | null): number[] {
while (helperStack.length > 0) {
curNode = helperStack.pop()!;
if (curNode !== null) {
if (curNode.right !== null) helperStack.push(curNode.right);
helperStack.push(curNode);
helperStack.push(curNode);
helperStack.push(null);
if (curNode.right !== null) helperStack.push(curNode.right);
if (curNode.left !== null) helperStack.push(curNode.left);
} else {
curNode = helperStack.pop()!;