無限ループの原因を見つけることができません

Question

私のコードは無限ループを引き起こしています。私はどこにも見つからず、私を狂ってしまいます。これに関する助言？以下の3つの方法のいずれかになる必要があります。それは1つのリンクされたリストを含む。どんな助けも素晴らしいだろう。おかげ

public boolean checkNotSamePlacements() { 

    Link current = head; 

    while (current != null) { 

     Link current2 = head; 

     while (current2 != null) { 

      if (current != current2) { 

       if (current.piece.col == current2.piece.col && current.piece.row == current2.piece.row) { 

        return true; 
       } 
      } 
      current2 = current2.next; 
     } 
     current = current.next; 
    } 

    return false; 
} 


public void checkAttacking() { 
    boolean foundPieces = false; 
    Link current = head; 

    while (current != null) { 

     Link current2 = head; 
     while (current2 != null) { 

      if (current != current2) { 

       if ((current.piece.isAttacking(current2.piece)) && foundPieces == false) { 

        System.out.print(current.piece.pieceType + " " + current.piece.col + 
        " " + current.piece.row + " " + current2.piece.pieceType + 
        " " + current2.piece.col + " " + current2.piece.row); 
        foundPieces = true; 
       } 
      } 
      current2 = current2.next; 
     } 
     current = current.next; 
    } 
    if (foundPieces == false) { 
     System.out.print("-"); 
    } 
} 

public void checkSpotFound (int col, int row) { 

    boolean foundPiece = false; 
    Link current = head; 

    while (current != null) { 

     if (current.piece.col == col && current.piece.row == row) { 

      System.out.print(current.piece.pieceType); 

      foundPiece = true; 
     } 
    } 

    if (foundPiece == false) { 
     System.out.print("-"); 
    } 
} 

}

Answer 1

あなたのコード内のcurrentが更新されることはありません -

while (current != null) { 

    if (current.piece.col == col && current.piece.row == row) { 

     System.out.print(current.piece.pieceType); 

     foundPiece = true; 
    } 

    current = current.next; // you might want to add this to your code 
}