使用堆排序，排序结果错误

如图，以下是我的代码，刚开始学习数据结构这块，请教一下，是不是哪里出了逻辑问题？

package com.orange.exer;

public class HeapSort{
    public static void heapSort(int[] arr){
        if(arr == null || arr.length < 2){
            return;
        }

        for(int i = (arr.length - 1) / 2;i >= 0;i--){
            heapify(arr,i,arr.length);
        }

        int heapSize = arr.length;
        swap(arr,0,--heapSize);

        while(heapSize > 0){
            heapify(arr,0,arr.length);
            swap(arr,0,--heapSize);

        }

    }

    public static void heapify(int[] arr,int heapSize,int index){

        int left = index * 2 + 1;
        while(left < heapSize){
            int largest = left + 1 < heapSize && (arr[left] > arr[left + 1]) ? left : left + 1;
            largest = arr[index] > arr[largest] ? index : largest;
            if(largest == index) {
                break;
            }
            swap(arr,index,largest);
            index = largest;
            left = index * 2 + 1;
        }
    }


    public static void swap(int[] arr,int i,int j){
        int temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;

    }

    public static void main(String[] args){
        int[] arr = {12,3,7,54,2,4,0,1,50};
        heapSort(arr);
        for(int i : arr){
            System.out.print(i + ", ");
        }
    }
}

运行结果是这样的：
3, 7, 54, 2, 4, 0, 1, 50, 12,