Java的差異方法

Question

我想創建一個方法，檢查一些Y座標的第一個差異，如果第一個差異是相同的，它會採取這些差異，並檢查第二個差異，我想繼續檢查，直到我的變量是平等的。我的問題是在我的差異陣列檢查平等

public static double[] Difference(double ardY[]) { 
    double ardDifference[] = new double[5]; 
    for (int j = 0; j < 5; j++) { 
     ardDifference[j] = ardY[j + 1] - ardY[j]; 
     while (ardDifference[j] != ardDifference[j]) { 
      for (int i = 0; i < 4; i++) { 
       ardDifference[i] = ardY[i + 1] - ardY[i]; 
       if (ardDifference[j] == ardDifference[i]) { 
        return ardDifference; 
        break; 
       } 
      } 
     } 
    } 
    return ardDifference; 
} 

Answer 1

我不太確定你想在這裏做什麼，但如果你想計算的差異，直到你得到的不同的陣列是所有相等，那麼你可以很容易地做到遞歸：

public static double[] Difference(double ardY[]) { 
    double ardDifference[] = new double[ardY.length - 1]; 

    boolean allEqual = true; 
    double prev; 
    for (int j = 0; j < ardDifference.length; j++) { 
     ardDifference[j] = ardY[j + 1] - ardY[j]; 
     if (j != 0) { 
      allEqual &= prev == ardDifference[j]; 
     } 
     prev = ardDifference[j]; 
    } 

    if (allEqual) { 
     return ardDifference; 
    } else { 
     return Difference(ardDifference); 
    } 
}