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fix: Use .equals() to compare two strings in Java (#961)

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selear 2023-11-21 21:20:04 +08:00 committed by GitHub
parent 9b35f75505
commit 5b6fb34a82
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1 changed files with 3 additions and 3 deletions
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6
codes/java/chapter_tree/array_binary_tree.java
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@ -63,15 +63,15 @@ class ArrayBinaryTree {
if (val(i) == null)
return;
// 前序遍历
if (order == "pre")
if ("pre".equals(order))
res.add(val(i));
dfs(left(i), order, res);
// 中序遍历
if (order == "in")
if ("in".equals(order))
res.add(val(i));
dfs(right(i), order, res);
// 后序遍历
if (order == "post")
if ("post".equals(order))
res.add(val(i));
}