TQC+ JAVA 條件判斷式 201 ~ 210

TQC+ JAVA6 試題總覽：LINK
Github 備份：LINK

	/* TQC+ JAVA6 - 201 */
	import java.util.Scanner;
	public class JPA201 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	System.out.println("Please enter score");
	Scanner sc = new Scanner(System.in);
	int a = sc.nextInt();
	test(a);
	int b = sc.nextInt();
	test(b);
	}
	//建立一個static的方法，來判斷是否有大於60
	public static void test(int c) {
	if(c>=60)
	System.out.println("You Pass");
	//以下這行不屬於if的判斷式之內，故無論if是否成立，皆會運作下列該行
	System.out.println("End");
	}
	}

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	/* TQC+ JAVA6 - 202 */
	import java.util.*;
	class JPA202{
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	}
	public static void test() {
	System.out.println("Input:");
	Scanner sc = new Scanner(System.in);
	int a,b;
	a = sc.nextInt();
	b = sc.nextInt();
	//建立條件判斷式，結果可能有三種狀況，a>b，a=b，a<b，所以判斷式處理如下
	if(a>b)
	System.out.printf("%d is larger than %d\n",a,b);
	else if(b>a)
	System.out.printf("%d is larger than %d\n",b,a);
	else
	System.out.printf("%d is equal to %d\n",a,b);
	}
	}

view raw TQCplus_JAVA_202 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 203 */
	import java.util.*;
	public class JPA203 {
	static Scanner input = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	}
	static void test() {
	System.out.println("Input:");
	Scanner sc = new Scanner(System.in);
	int a;
	a = sc.nextInt();
	//要判斷奇偶數，便可用mod2的運算，如果整除2，則mod2=0，視為偶數；反之，mod2=1，沒有整除2，而為奇數
	if((a%2)==0)
	System.out.printf("The number is even.\n");
	else if((a%2)==1)
	System.out.printf("The number is odd.\n");
	else
	System.out.printf("Error!!");
	}
	}

view raw TQCplus_JAVA_203 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 204 */
	import java.util.*;
	class JPA204 {
	static Scanner input = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	}
	public static void test() {
	System.out.println("Input:");
	Scanner sc = new Scanner(System.in);
	int a = sc.nextInt();
	//使用and的運算，並且同時符合mod5=0和mod9=0的數字，使得if的判斷式成立
	if((a%5)==0 && (a%9)==0)
	System.out.printf("Yes\n");
	else
	System.out.printf("No\n");
	}
	}

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	/* TQC+ JAVA6 - 205 */
	import java.util.*;
	public class JPA205 {
	static Scanner input = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	}
	//寫一個方法來執行倍數判斷
	static void test() {
	System.out.println("Enter an integer:");
	Scanner sc = new Scanner(System.in);
	int a = sc.nextInt();
	//先判斷是否是6的倍數，由最大的數開始判斷
	if ((a%6)==0)
	System.out.printf("%d是2、3、6的倍數\n",a);
	//如果不是6的倍數，再判斷是否為2或3的倍數，其中判斷2或3的順序沒有差
	else if ((a%2)==0)
	System.out.printf("%d是2的倍數\n",a);
	else if ((a%3)==0)
	System.out.printf("%d是3的倍數\n",a);
	else
	System.out.printf("%d不是2、3、6的倍數\n",a);
	}
	}

view raw TQCplus_JAVA_205 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 206 */
	import java.util.*;
	public class JPA206 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	}
	static void test() {
	int chi, eng, math;
	System.out.print("Input Chinese score:");
	chi = keyboard.nextInt();
	System.out.print("Input English score:");
	eng = keyboard.nextInt();
	System.out.print("Input Math score:");
	math = keyboard.nextInt();
	//使用四個if個別獨立去判斷，個別的分數是否不及格
	if(chi<60)
	System.out.printf("Chinese failed.\n");
	if(eng<60)
	System.out.printf("English failed.\n");
	if(math<60)
	System.out.printf("Math failed.\n");
	if(chi>60 && eng>60 && math>60)
	System.out.printf("All pass.\n");
	}
	}

view raw TQCplus_JAVA_206 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 207 */
	import java.util.*;
	public class JPA207 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	}
	static void test() {
	System.out.print("請輸入三個整數:");
	Scanner sc = new Scanner(System.in);
	int[] n= new int[3];
	n[0]=sc.nextInt();
	n[1]=sc.nextInt();
	n[2]=sc.nextInt();
	//使用Arrays.sort(n)，將陣列中的數字由小排到大
	Arrays.sort(n);
	//三角形條件判斷，兩個短邊相加大於最大邊，並且其中一邊的數不可為零
	if(n[0]+n[1]>n[2]&&n[0]*n[1]*n[2]!=0)
	{
	//直角三角形:較小的兩邊平方和等於最大邊的平方
	if(n[0]*n[0]+n[1]*n[1]==n[2]*n[2])
	System.out.print("直角三角形\n");
	//鈍角三角形:較小的兩邊平方和小於最大邊的平方
	else if(n[0]*n[0]+n[1]*n[1]<n[2]*n[2])
	System.out.print("鈍角三角形\n");
	//銳角三角形:較小的兩邊平方和大於最大邊的平方
	else if(n[0]*n[0]+n[1]*n[1]>n[2]*n[2])
	System.out.print("銳角三角形\n");
	}
	//若無法構成三角形則進入此判斷式
	else
	System.out.print("不可以構成三角形\n");
	}
	}

view raw TQCplus_JAVA_207 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 208 */
	import java.util.*;
	class JPA208 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	test();
	}
	//建立分數判斷的方法，在main方法中，宣告五次，便執行五次
	public static void test() {
	System.out.println("Input:");
	Scanner sc = new Scanner(System.in);
	int a = sc.nextInt();
	//使用條件判斷式，"if" "else if" "else"，因為一定只能符合其依規則，不能用多個if來判斷
	//這邊使用漏斗的寫法，如果沒有大於等於90那該數一定小於90往下繼續執行，那底下便只需寫判斷大於等於80即可，不用再判斷是否小於90
	if(a>=90)
	System.out.printf("Your grade is A\n");
	else if(a>=80)
	System.out.printf("Your grade is B\n");
	else if(a>=70)
	System.out.printf("Your grade is C\n");
	else if(a>=60)
	System.out.printf("Your grade is D\n");
	else if(a<60)
	System.out.printf("Your grade is F\n");
	}
	}

view raw TQCplus_JAVA_208 hosted with ❤ by GitHub

	/* TQC+ JAVA6 - 209 */
	import java.util.*;
	public class JPA209 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	}
	public static void test() {
	Scanner sc = new Scanner(System.in);
	double x,y;
	System.out.print("請輸入 x 座標:");
	x = sc.nextDouble();
	System.out.print("請輸入 y 座標:");
	y = sc.nextDouble();
	if(x==0.0&&y==0.0)
	System.out.printf("(%1.2f,%1.2f)在原點上\n",x,y);
	else if (x==0.0)
	System.out.printf("(%1.2f,%1.2f)在y軸上\n",x,y);
	else if (y==0.0)
	System.out.printf("(%1.2f,%1.2f)在x軸上\n",x,y);
	else if (x>0.0&&y>0.0)
	System.out.printf("(%1.2f,%1.2f)在第一象限上\n",x,y);
	else if (x<0.0&&y>0.0)
	System.out.printf("(%1.2f,%1.2f)在第二象限上\n",x,y);
	else if (x<0.0&&y<0.0)
	System.out.printf("(%1.2f,%1.2f)在第三象限上\n",x,y);
	else if (x>0.0&&y<0.0)
	System.out.printf("(%1.2f,%1.2f)在第四象限上\n",x,y);
	}
	}

view raw TQCplus_JAVA_209 hosted with ❤ by GitHub

	import java.util.*;
	class JPA210 {
	static Scanner keyboard = new Scanner(System.in);
	public static void main(String[] args) {
	test();
	test();
	test();
	test();
	test();
	}
	public static void test() {
	System.out.println("Input a character:");
	Scanner sc = new Scanner(System.in);
	//讀取字串
	String tm = sc.next();
	//僅擷取自串的第一個字元
	char tm0 = tm.charAt(0);
	switch(tm0) {
	case 'a'://這邊不需要特別去處理，因為沒有寫break，所以會繼續跑到case 'B'的內容，直到碰到break
	case 'b':
	System.out.println("You entered a or b");
	break;
	case 'x':
	System.out.println("You entered x");
	break;
	case 'y':
	System.out.println("You entered y");
	break;
	default:
	System.out.println("You entered something else.");
	break;
	};
	}
	}

view raw TQCplus_JAVA_210 hosted with ❤ by GitHub

TQC+ JAVA6 試題總覽：LINK
Github 備份：LINK

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