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

2023-11-21 21:20:04 +08:00 · 2023-11-21 21:20:04 +08:00 · 5b6fb34a82
commit 5b6fb34a82
parent 9b35f75505
1 changed files with 3 additions and 3 deletions
--- a/codes/java/chapter_tree/array_binary_tree.java
+++ b/codes/java/chapter_tree/array_binary_tree.java
@ -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));
    }