Assignment 03.txt

// Task01
import java.util.Scanner;
public class Task01{
     public static void main(String [] args){
     Scanner scnr=new Scanner(System.in);
     System.out.println("Please enter the first number- ");
     int num1=scnr.nextInt();
     System.out.println("Please enter the second number- ");
     int num2=scnr.nextInt();
     System.out.println("Please enter the third number- ");
     int num3=scnr.nextInt();
     if(num1>num2 && num1>num3){
     System.out.println("Largest number: "+num1);
     }
     if(num2>num1 && num2>num3){
     System.out.println("Largest number: "+num2);
     }
     if(num3>num1 && num3>num2){
     System.out.println("Largest number: "+num3);
     }
     }
} 



//Task 02
import java.util.Scanner;
public class Task02{
     public static void main(String [] args){
     Scanner sc=new Scanner(System.in);
     System.out.println("Enter your mark: ");
     double mark=sc.nextDouble();
     if(mark>=90 && mark<=100 ){
     System.out.println("Your grade is A");
     }
     else if(mark>=85 && mark<=89 ){
     System.out.println("Your grade is A-");
     }
     else if(mark>=70 && mark<=84 ){
     System.out.println("Your grade is B");
     }
     else if(mark>=57 && mark<=69 ){
     System.out.println("Your grade is c");
     }
     else if(mark>=50 && mark<=56){
     System.out.println("Your grade is D");
     }
     else if(mark<=50 ){
     System.out.println("Your grade is F");
     }
     else{
     System.out.println("Invalid input ");
     }
     }
}



//Task 03
import java.util.Scanner;
public class Task03{
     public static void main(String [] args){
     Scanner scnr=new Scanner(System.in);
     System.out.println("Please enter the first number-");
     int n1=scnr.nextInt();
     System.out.println("Please enter the second number-");
     int n2=scnr.nextInt();
     System.out.println("Please enter the operator-");
     String operator= scnr.next();
     
     if(operator.equals("+")){
     System.out.println("Addition is "+(n1+n2));
     }
     else if(operator.equals("-")){
     System.out.println("Subtraction is "+(n1-n2));
     }
     else if(operator.equals("/")){
     System.out.println("Division is "+(n1/n2));
     }
     else if(operator.equals("*")){
     System.out.println("Multiplication is "+(n1*n2));
     }
     else{
     System.out.println("Invalid input");
     }
     }
}



//Task04
import java.util.Scanner;
public class Task04{
     public static void main(String [] args){
     Scanner scnr=new Scanner(System.in);
     System.out.println("Please enter a number-");
     int n=scnr.nextInt();
     
     
     if(n%5==0 && n%7==0){
     System.out.println("Divisible by both");
     }
     
     else if(n%5==0 &&n%7!=0){
     System.out.println("Invalid: Divisible by 5 only");
     }
     
     else if(n%5!=0 &&n%7==0){
     System.out.println("Invalid: Divisible by 7 only");
     }
     
     else {System.out.println("No");}
     
     
     }
}



//Task 05
import java.util.Scanner;
public class Task05{
     public static void main(String [] args ){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter a year-");
          int year=scnr.nextInt();
          if(year%400==0 ||(year%100!=0 && year%4==0)){
               System.out.println(year+" is a leap year.");
          }
          else{
          System.out.println(year+" is not a leap year.");
          }
     }
}



//Task 06
import java.util.Scanner;
public class Task06{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter a number- ");
          int num=scnr.nextInt();
          if(num<0){
               System.out.println("Number is negative ");
          }
          if(num==0){
               System.out.println("Number is zero ");
          }
          if(num>0 && num%2==0){
               System.out.println("Number is positive and even");
          }
          if(num>0 && num%2!=0){
               System.out.println("Number is positive and odd");
          }
     } 
}



//Task 07
import java.util.Scanner;
public class Task07{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter the value of x - ");
          int num=scnr.nextInt();
          if(num<0){
          System.out.println("Output: "+(2*num));
          }
          else if(num>=0 && num<2){
          System.out.println("Output: "+(num+1));
          }
          else if(num>=2 && num<5){
          System.out.println("Output: "+((num*num)-1));
          }
          else if(num>=5){
               System.out.println("Output: "+((3*num*num)+2));
          }
     }
}



//Task 08
import java.util.Scanner;
public class Task08{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter your BRACU student ID - ");
          int student_id=scnr.nextInt();
          int year=student_id/1000000;
          int num=student_id/100000%10;
          if(num==1){
               String session="Spring"; 
               System.out.println("Student Joined BRAC in "+session+" "+year);
          }
          if(num==2){
               String session="Fall"; 
               System.out.println("Student Joined BRAC in "+session+" "+year);
          }
          if(num==3){
               String session="Summer"; 
               System.out.println("Student Joined BRAC in "+session+" "+year);
          }
     }
}


//Task 09
import java.util.Scanner;
public class Task09{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter your payment- ");
          int pay=scnr.nextInt();
          System.out.println("Please enter your age- ");
          int age=scnr.nextInt();
          if(pay<10000 || age<18){
          System.out.println("Your tax amount is 0 Tk. ");
          }
          else if(pay>10000 && pay<20000){
          System.out.println("Your tax amount is "+(pay*5/100)+"  Tk.");
          }
           else if(pay>20000){
          System.out.println("Your tax amount is "+(pay*10/100)+"  Tk.");
          }
     }
} 



//Task 10
import java.util.Scanner;
public class Task10{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter the first decimal number-");
          float num_1=scnr.nextFloat();
          System.out.println("Please enter the second decimal number-");
          float num_2=scnr.nextFloat();
          System.out.println("Please enter the third decimal number-");
          float num_3=scnr.nextFloat();
          if(num_1>num_2 && num_1>num_3){
          System.out.println("Maximum number is "+num_1);
          }
          if(num_2>num_1 && num_2>num_3){
          System.out.println("Maximum number is "+num_2);
          }
          if(num_3>num_2 && num_3>num_1){
          System.out.println("Maximum number is "+num_3);
          }
          if(num_1<num_2 && num_1<num_3){
          System.out.println("Minimum number is "+num_1);
          }
          if(num_2<num_1 && num_2<num_3){
          System.out.println("Minimum number is "+num_2);
          }
          if(num_3<num_2 && num_3<num_1){
          System.out.println("Minimum number is "+num_3);
          }
     }
}



//Task 11
import java.util.Scanner;
public class Task11{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Please enter the value of a side of a triangle-");
          int s1=scnr.nextInt();
          System.out.println("Please enter the value of another side of the triangle-");
          int s2=scnr.nextInt();
          System.out.println("Please enter the value of the last side of the triangle-");
          int s3=scnr.nextInt();
          if(((s1+s2)<=s3) || ((s2+s3)<=s1) || ((s1+s3)<=s2)){
          System.out.println("Invalid input (Sum of two sides must be greater than the remaining side)");
          }
          else if(s1==s2 && s2==s3){
          System.out.println("This is an Equilateral Triangle");
          }
          else if(s1!=s2 && s2!=s3 && s1!=s3){
          System.out.println("This is a Scalene Triangle");
          }
          else if((s1==s2 && s2!=s3) || (s2==s3 && s3!=s1) || (s1==s3 && s3!=s2)){
           System.out.println("This is an Isosceles Triangle");
          }
     }
}




//Task 12
import java.util.Scanner;
public class Task12{
     public static void main(String [] args){
          Scanner scnr=new Scanner(System.in);
          System.out.println("Enter the amount the customer need to pay(Taka)");
          int price=scnr.nextInt();
          System.out.println("Enter the amount the customer gave(Taka)");
          int given=scnr.nextInt();
          if(price>given){
               System.out.println("Please pay "+(price-given)+" taka more");
          }
          else if(given>price){
               int ret=given-price;
               System.out.println("The returned amount is "+ret+" taka");
               System.out.println("100 taka note: "+ret/100);
               System.out.println("50 taka note: "+(ret%100)/50);
               System.out.println("20 taka note: "+((ret%100%50)/20));
                                  System.out.println("10 taka note: "+((ret%100%50%20)/10));
                                                     System.out.println("5 taka coin: "+((ret%100%50%20%10)/5));
                                                                        System.out.println("2 taka coin: "+((ret%100%50%20%10%5)/2));
                                                                                           System.out.println("1 taka coin: "+((ret%100%50%20%10%5%2)/1));              
                                                                                                              }
          else{
          System.out.println("The returned amount is 0 taka");
          }
     }
}



//Task 13
import java.util.Scanner;
public class Task13{
     public static void main (String [] args){
     Scanner scnr=new Scanner(System.in);
     System.out.println("Please enter the first number");
     int n1=scnr.nextInt();
     System.out.println("Please enter the second number");
     int n2=scnr.nextInt();
     System.out.println("Please enter the third number");
     int n3=scnr.nextInt();
     if(n1==n2 && n2==n3){
     System.out.println("All numbers are equal");
     }
     else if(n1!=n2 && n2!=n3 && n3!=n1){
     System.out.println("All numbers are different");
     }
     else if((n1==n2 && n2!=n3) || (n2==n3 && n3!=n1) || (n1==n3 && n3!=n2)){
     System.out.println("Neither all are equal or different");
     }
     }
}