TQC+ JAVA 基本認識 101 ~ 110

TQC+ JAVA6 試題總覽：LINK
Github 備份：LINK

	/* TQC+ JAVA6 - 101 */
	//程式中四處錯誤之處，建議將其全部刪除，整個重寫即可
	public class JPA101 {
	public static void main (String[] args) {
	System.out.println("I love Java!");
	System.out.println("Java is so good！");
	}
	}

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	/* TQC+ JAVA6 - 102 */
	import java.util.Scanner;
	public class JPA102 {
	public static void main (String[] args) {
	System.out.println("Please input:");
	//使用Scanner這個方法來讀取鍵盤輸入
	double k = new Scanner(System.in).nextDouble();
	System.out.println(k+" kg = "+ (k*2.20462) + " ponds");
	}
	}

view raw TQCplus_JAVA_102 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 103 */
	import java.util.Scanner;
	public class JPA103 {
	public static void main (String[] args) {
	System.out.println("Please input:");
	Scanner sc = new Scanner(System.in);
	//Scanner在讀取的時候會以空白為區隔
	int a,b,c;
	a=sc.nextInt();
	b=sc.nextInt();
	c=sc.nextInt();
	//這邊記得要將三個變數之和強制轉型成double，這樣除出來的數字才會是浮點數
	System.out.printf("Average: %4.2f",((double)(a+b+c)/3));
	}
	}

view raw TQCplus_JAVA_103 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 104 */
	import java.util.Scanner;
	public class JPA104 {
	public static void main (String[] args) {
	Scanner sc = new Scanner(System.in);
	double x1,x2,y1,y2;
	System.out.print("輸入第1組的x和y座標:");
	x1 = sc.nextDouble();
	y1 = sc.nextDouble();
	System.out.print("輸入第2組的x和y座標:");
	x2 = sc.nextDouble();
	y2 = sc.nextDouble();
	//printf的用法是是顯示出一串字串，而字串中會有一些變數可帶入，例如%d 就是帶入整數，%f就是帶入浮點數，而%4.2f是指全部的位數有四位(包含小數點)，而小數點後面佔兩位
	//不過如果輸出的為數大於使用者輸出的，則會忽略使用者所輸入的位數限制
	//Math.sqrt(X) = X開根號
	//Math.pow(2.0,3.0) = 二的三次方，其中兩個變數皆是double形式
	System.out.printf("介於(%4.2f,%4.2f)和(%4.2f,%4.2f)之間的距離是%4.2f", x1,y1,x2,y2,(Math.sqrt(Math.pow((x2-x1),2) + Math.pow((y2-y1),2))));
	}
	}

view raw TQCplus_JAVA_104 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 105 */
	import java.util.Scanner;
	public class JPA105 {
	public static void main (String[] args) {
	System.out.print("請輸入您的姓名:");
	Scanner sc = new Scanner(System.in);
	String name = sc.next();
	System.out.printf("Hi, %s,請輸入您的銅板的個數:\n",name);
	System.out.print("請輸入1元的數量:");
	int n1 = sc.nextInt();
	System.out.print("請輸入5元的數量:");
	int n5 = sc.nextInt();
	System.out.print("請輸入10元的數量:");
	int n10 = sc.nextInt();
	System.out.print("請輸入50元的數量:");
	int n50 = sc.nextInt();
	int sum,G1,G2,G3,G4;
	sum = n1*1 + n5*5 + n50*50 +n10*10;
	//將總金額除以1000，小數點前面僅剩千位數這個數，並由浮點數存至整數，後面小數點皆會消失
	G1 = sum/1000;
	//將總金額除以100，小數點前面僅剩千位數和百位數這兩數，再進行mod運算，除以10所餘的數，這樣便僅會存在百位數
	G2 = (sum/100)%10;
	//將總金額除以10，小數點前面僅剩千位數和百位數和十位數這三數，再進行mod運算，除以10所餘的數，這樣便僅會存在十位數
	G3 = (sum/10)%10;
	//將總金額進行mod運算，除以10所餘的數，這樣便僅會存在個位數
	G4 = sum%10;
	System.out.printf("您的錢總共有: %d 千 %d 百 %d 十 %d 元",G1,G2,G3,G4);
	}
	}

view raw TQCplus_JAVA_105 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 106 */
	public class JPA106 {
	public static void main (String[] args) {
	double x;
	x = -3.2;
	System.out.printf("f(%.1f) = %4.4f\n",x,f(x));
	x = -2.1;
	System.out.printf("f(%.1f) = %4.4f\n",x,f(x));
	x = 0;
	System.out.printf("f(%.1f) = %4.4f\n",x,f(x));
	x = 2.1;
	System.out.printf("f(%.1f) = %4.4f\n",x,f(x));
	}
	static double f(double d) {
	return (3*(Math.pow(d, 3))+2*d-1);
	}
	}

view raw TQCplus_JAVA_106 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 107 */
	public class JPA107 {
	public static void main(String argv[]) {
	int action = 1, skill = 2, teamgame = 3;
	System.out.println("The basketball grade is " + Basketball.calGrade(action,skill,teamgame));
	System.out.println("The baseball grade is " + Baseball.calGrade(skill,teamgame));
	}
	}
	//建立一個class
	class Basketball {
	//在裡面再建立一個方法，並宣告成static
	public static int calGrade(int a,int s,int t) {
	return a + s + t;
	}
	}
	class Baseball {
	public static int calGrade(int s,int t) {
	return 10 + s + t;
	}
	}

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	/* TQC+ JAVA6 - 108 */
	public class JPA108 {
	public static void main (String[] args) {
	int i = add(2, 3);
	double d = add(5.2, 4.3);
	String s = add("I love ", "Java!!");
	System.out.printf("%d %f %s %n", i, d, s);
	}
	public static int add(int a, int b) {
	System.out.printf("Adding two integer: %d , %d \n",a,b);
	return (a+b);
	}
	public static double add(double a, double b) {
	System.out.printf("Adding two doubles: %2.1f , %2.1f \n",a,b);
	return (a+b);
	}
	public static String add(String a, String b) {
	System.out.printf("Adding two strings: %s, %s \n",a,b);
	return (a+b);
	}
	}

view raw TQCplus_JAVA_108 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 109 */
	public class JPA109 {
	public static int adder (int s1, int a1, int e1) {
	//傳回加總後的數值回去，先傳到gameRating這個方法，再由gameRating傳回至main中
	return (s1+a1+e1);
	}
	public static int gameRating (int s, int a, int e) {
	//再將剛剛傳進來的傳入到adder這個方法中
	return adder(s,a,e);
	}
	public static void main (String argv[]) {
	int skill = 6, action = 9, excitment = 8, result;
	//將數字傳入gameRating這個方法中
	result = gameRating(skill, action, excitment);
	System.out.print("The rating of the game is ");
	System.out.println(result);
	}
	}

view raw TQCplus_JAVA_109 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 110 */
	public class JPA110 {
	public static void main(String args[]) {
	double totalarea;
	System.out.printf("圓形面積為：%f \n",calCircle(5));
	System.out.printf("三角形面積為：%f \n",calTriangle(10,5));
	System.out.printf("方形面積為：%f \n",calRectangle(10,5));
	totalarea = calCircle(5) + calTriangle(10,5) + calRectangle(10,5) ;
	System.out.printf("此圖形面積為：%f \n",totalarea);
	}
	//宣告一個計算圓面積的方法
	public static double calCircle(int a) {
	return (a*a*3.1415926);
	}
	//宣告一個計算三角形面積的方法
	public static double calTriangle(int a,int b) {
	//記得要將a*b的乘積強制轉型成double，這樣除出來數字才會保留小數部分
	return ((double)(a*b)/2);
	}
	//宣告一個計算長方形面積的方法
	public static double calRectangle(int a,int b) {
	return (a*b);
	}
	}

view raw TQCplus_JAVA_110 hosted with ❤ by GitHub

TQC+ JAVA6 試題總覽：LINK
Github 備份：LINK

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