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※ 引述《Leon》之銘言:
: 小弟在自學JAVA中
: 教材是Think Java
: 目前在第六章習題6.5卡關
: 麻煩大家指點迷津^^
: Exercise 6.5.
: The distance between two points (x1, y1) and (x2, y2) is Distance = 根號((x2 � x1)^2 + (y2 � y1)^2)
: Write a method named distance that takes four doubles as parameters—x1, y1, x2 and y2—and that prints the distance between the points.
: You should assume that there is a method named sumSquares that calculates and returns the sum of the squares of its arguments. For example:
: double x = sumSquares(3.0, 4.0);
: would assign the value 25.0 to x.
: The point of this exercise is to write a new method that uses an existing one.
: You should write only one method: distance.
: You should not write sumSquares or main and you should not invoke distance.
: 搞不懂它到底要我怎麼做@@
自回
依題意它應該是要我寫個distance method（算兩座標點距），
裡面必須引用到一個假設的sumSquares method（算兩平方面積和），
而因為sumSquares只是假設的，故不需要main method實際去跑結果。

問題一、我的理解對嗎？

問題二、如果我的理解是對的，我卻想不出來如何在distance method裡面運用sumSquares，我想不出兩者的關係。@@

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※ 作者: Leon 時間: 2014-07-10 07:34:05