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  1. public ArrayList<Double> findRoots(double a, double b, doublec) {   ArrayList<Double> ret = new ArrayList<>();   double bb4ac = b*b-4*a*c;   if (0.0 <= bb4ac)  {     double xxxx = Math.sqrt(bb4ac);     ret.add( (-b + xxxx)/ ( 2 . 0 *a...

  2. 子類別的建構子如果沒有指定呼叫父類別的哪個建構子,則預設呼叫父類別的無引數建構子。 public CRectangle11_1(int w,int h) { width=w; height=h; } 相當於 public CRectangle11_1(int w,int h) { super(); width=w; height=h; } 但是類別CShape11_1中沒有無引數建構子public...

  3. ... reader = new InputStreamReader(System.in); BufferedReader input = new BufferedReader(reader); int chose = 0; char c[]; String s; while(true) { try { ...

  4. ...return false; } }; int main(int gc, char *gv[]) { P<double> p0(0, 2 . 0 ),p1( 2 . 0 ,1.0); p0.prt(); cout<<"distance to "...

  5. ...(); arraysSort(); } private static void propertiesStore() { Properties property = new Properties(); property.setProperty("key", "value"); property.setProperty("name...

  6. ....out.println("判斷是否質數"); System.out.println("請輸入n"); Scanner in = new Scanner(System.in); int n = in.nextInt(); in.close(); if (isPrime(n)) { System...

  7. ... 的。其他就是另一條問題。 Pair[] p = new Pair[num]; ////////////////////////////question here///////////////// Scanner ...

  8. ...count重設成1 改成 function mySong(res1){ count = !count if(!count){ var audio = new Audio('./res/'+res1); audio.play(); } else{ audio.stop...

  9. ...main(String[] args) { final int MAX = 10; int numberOfEven = 0; Scanner kb = new Scanner(System.in); for (int i = 0; i < MAX; i++) { System.out.print...

  10. ...{ private: int *p,n,s; public: B(int N):p( new int[N]),n(0),s(N){for(n=s;n>0;p[--n]=0...gt;>N>>l&&N>=4&&NULL!=(b= new B(N));delete b,c=0)play(*b,0,N,l,c...

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