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assignment1.java
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188 lines (155 loc) · 5.77 KB
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//1.Even or odd?
// import java.util.Scanner;
// public class assignment1 {
// public static void main(String[] args) {
// Scanner input = new Scanner(System.in);
// System.out.print("Enter Number :");
// int n = input.nextInt();
// String result = (n % 2 == 0) ? "The number is even" : "The number is odd";
// System.out.println("\n" + result);
// input.close();
// }
// }
//2.Bill calculator using nested condition
// import java.util.Scanner;
// public class assignment1_1 {
// public static void main(String[] args){
// System.out.println("\t\t\tAmount Discount\n<5000 10%\n>=5000 and <10000 15%\n>=10000 and <20000 20%\n>=20000 50%");
// System.out.print("\nEnter the Amount :");
// Scanner input=new Scanner(System.in);
// double amount=input.nextFloat();
// if (amount<5000) {
// amount=amount-amount*0.1;
// } else if(amount>=5000 && amount<10000) {
// amount=amount-amount*0.15;
// }
// else if(amount>=10000 && amount<20000) {
// amount=amount-amount*0.2;
// }
// else if(amount>=20000) {
// amount=amount-amount*0.5;
// }
// System.out.println("\nThe Bill is :"+String.valueOf(amount));
// input.close();
// }
// }
//3.calculator using switch case
// import java.util.Scanner;
// public class assignment1 {
// public static void main(String[] args) {
// Scanner input = new Scanner(System.in);
// while (true) {
// System.out.print(
// "\n\t\t\t\t***Select***\n1)Addition\n2)Substraction\n3)Multiplication\n4)Division\n5)Exit \n:");
// int key = input.nextInt();
// if(key==5){
// break;
// }
// System.out.print("Enter 1st Numbers \n:");
// float num1 = input.nextFloat();
// System.out.print("Enter 2nd Number \n:");
// float num2 = input.nextFloat();
// switch (key) {
// case 1:
// System.out.println("The Addition is ");
// System.out.println(num1 + num2);
// break;
// case 2:
// System.out.println("The Differnece is ");
// System.out.println(num1 - num2);
// break;
// case 3:
// System.out.println("The Product is ");
// System.out.println(num1 * num2);
// break;
// case 4:
// if (num2 != 0) {
// System.out.println("The Division is ");
// System.out.println(num1 / num2);
// } else {
// System.out.println("Error! Denominator cannot be negative ");
// }
// break;
// default:
// break;
// }
// }
// input.close();
// }
// }
//4.perfect number{using list class}
// import java.util.*;
// public class assignment1{
// public static void main(String[] args){
// Scanner input=new Scanner(System.in);
// int key;
// while(true){
// System.out.print("\n\n\t\t\t\t***Select***\n1)Enter new Number\n2)Exit \n:");
// key=input.nextInt();
// if(key==2){
// break;
// }
// List<Integer> factors_list=new ArrayList<Integer>();
// System.out.print("Number \n:");
// int number=input.nextInt();
// int sum=0;
// if(number%2==0){
// for (int i = 1; i < number/2+1; i++) {
// if(number%i==0){
// factors_list.add(i);
// }
// }
// }else{
// for (int i = 1; i < ((number+1)/2)+1; i++) {
// if(number%i==0){
// factors_list.add(i);
// }
// }
// }
// for(Integer n:factors_list){
// sum+=n;
// }
// String result=(sum==number)?"The Entered Number is Perfect Number":"The Entered Number is not a perfect number";
// System.out.println(result);
// }
// input.close();
// }
// }
//5. Reverse Number
import java.util.*;
import java.lang.Math;
public class assignment1 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int key;
while (true) {
System.out.print("\n\n\t\t\t\t***Select***\n1)Enter new Number\n2)Exit \n:");
key = input.nextInt();
if (key == 2) {
break;
}
List<Integer> digit_list = new ArrayList<Integer>();
System.out.print("Number \n:");
int number = input.nextInt();
int temp=number,reverse_number=0;
int exp=1,digits=0;
while(temp%((int)Math.pow(10,exp))>1){
digit_list.add(temp%((int)Math.pow(10,exp)));
temp-=temp%((int)Math.pow(10,exp));
System.out.println(temp%((int)Math.pow(10,exp)));
System.out.println("testing");
exp++;
digits++;
}
for (int i = 0; i < digits; i++) {
reverse_number+=digit_list.get(i)*((int)Math.pow(10,exp));
exp--;
System.out.println(digit_list.get(i));
System.out.println(reverse_number);
}
System.out.print("The reversed number is :");
System.out.print(reverse_number);
}
input.close();
}
}