LeetCode/src/main/java/com/cool/hot100/binary_tree/Num94.java

package com.cool.hot100.binary_tree;

import java.util.ArrayList;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: Cool
 * @Date: 2024/08/28/23:02
 * DayNumber 1
 * Hard 1
 * Level 3
 */
public class Num94 {

    public List<Integer> inorderTraversal(TreeNode root) {
        List<Integer> list=new ArrayList<>();
        mediumTraverse(root,list);
        return list;
    }
    private void mediumTraverse(TreeNode root,List<Integer> list){
        if(root==null){
            return;
        }
        mediumTraverse(root.left,list);
        list.add(root.val);
        mediumTraverse(root.right,list);
    }

}