JAVA : PROGAMMING SOLUTION: August 2020

Sunday, August 23, 2020

Write a program to input a number and check whether it is Happy Number or not? (28=2^2+8^2=4+64=68,6^2+8^2=36+64=100,1^2+0^2+0^2=1+0+0=1)

83) Write a program to input a number and check whether it is Happy Number or not? (28=2²+8²=4+64=68,6²+8²=36+64=100,1²+0²+0²=1+0+0=1)

import java.util.*;
public class Happy_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int a = sc.nextInt();
int s = 10;
while(s>9)
{
s=0;
while(a>0)
{
int d = a%10;
int x = (int)Math.pow(d,2);
a = a/10;
s=s+x;
}
a=s;
}
if(s==1)
{
System.out.println("Entered number is a HAPPY Number");
}
else
{
System.out.println("Entered number is not a HAPPY Number");
}
}
}

Output :

happy-number

Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1)

Friday, August 7, 2020

Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1)

82) Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1)

import java.util.*;
public class Magic_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int a = sc.nextInt();
int s = 10;
while(s>9)
{
s=0;
while(a>0)
{
int d = a%10;
a = a/10;
s=s+d;
}
a=s;
}
if(s==1)
{
System.out.println("Entered number is a MAGIC Number");
}
else
{
System.out.println("Entered number is not a MAGIC Number");
}
}
}

Output :

magic-number

Write a program to input a number and check whether it is Amicable Pair Number or not?(220,284|| sum of factors of 220 is equal to 284 and sum of factors of 284 is equal to 220 then it is amicable pair Number)

Write a program to input a number and check whether it is Amicable Pair Number or not?(220,284|| sum of factors of 220 is equal to 284 and sum of factors of 284 is equal to 220 then it is amicable pair Number)

81) Write a program to input a number and check whether it is Amicable Pair Number or not?(220,284|| sum of factors of 220 is equal to 284 and sum of factors of 284 is equal to 220 then it is amicable pair Number)

import java.util.*;
public class Amicable_pair_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter two numbers");
int a = sc.nextInt();
int b = sc.nextInt();
int m = 0;
int n = 0;
for(int i = 1;i<a;i++)
{
if(a%i==0)
{
m=m+i;
}
}
for(int i = 1;i<b;i++)
{
if(b%i==0)
{
n=n+i;
}
}
if(m==b&&n==a)
{
System.out.println("Entered number are AMICABLE PAIR Number ");
}
else
{
System.out.println("Entered number are not AMICABLE PAIR Number ");
}
}
}

Output :

amicable-pair-number

Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

Wednesday, August 5, 2020

Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

80) Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

import java.util.*;
public class Swap_first_last_digit
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int a = sc.nextInt();
int k = a;
int c = 0;
while(k>0)
{
k=k/10;
c++;
}
int m = (int)Math.pow(10,c-1);
int n = a%m;
int t = a/m;
int r = n%10;
n=n/10;
n=(n*10)+t;
n=(r*m)+n;
System.out.println("Number after SWAPING First and Last Digit = "+n);
}
}

Output :

swaping-first-and-last-digit-of-a-number

Write a program to input a number and check whether it is Adam Number or not? (12²=144 , 21²= 441 = 144, 144=144)

Write a program to input a number and check whether it is Adam Number or not? (12^2 =144 , 21^2 = 441 = 144, 144=144 )

79) Write a program to input a number and check whether it is Adam Number or not? (12²=144 , 21²= 441 = 144, 144=144 )

import java.util.*;
public class Adam_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int a = sc.nextInt();
int p = a*a;
int r = 0;
while(a>0)
{
int d = a%10;
r=(r*10)+d;
a=a/10;
}
int p1 = r*r;
r=0;
while(p1>0)
{
int d = p1%10;
r=(r*10)+d;
p1=p1/10;
}
if(p==r)
{
System.out.println("Entered number is a ADAM Number");
}
else
{
System.out.println("Entered number is not a ADAM Number");
}
}
}

Output :

adam-number

Write a program to input a number and check whether it is Disarium Number or not? (135=1¹+3²+5³=1+9+125=135)

Write a program to input a number and check whether it is Disarium Number or not? (135=1^1+3^2+5^3=1+9+125=135)

78) Write a program to input a number and check whether it is Disarium Number or not? (135=1¹+3²+5³=1+9+125=135)

import java.util.*;
public class Disarium_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int a = sc.nextInt();
int k = a;
int c = 0;
while(k>0)
{
k=k/10;
c++;
}
int r = 0;
k=a;
for(int i = c;i>=1;i--)
{
int d = k%10;
int x = (int)Math.pow(d,i);
r=r+x;
k=k/10;
}
if(r==a)
{
System.out.println("Entered number is a DISARIUM Number");
}
else
{
System.out.println("Entered number is not a DISARIUM Number");
}
}
}

Output :

disarium-number

Write a program to input a number and check whether it is Odious Number or not? (7…binary…111.no. of ones is 3 and it is odd.so it is odious no.)

Write a program to input a number and check whether it is Odious Number or not? (7…binary…111.no. of ones is 3 and it is odd.so it is odious no.)

77) Write a program to input a number and check whether it is Odious Number or not? (7…binary…111.no. of ones is 3 and it is odd.so it is odious no.)

import java.util.*;
public class Odious_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int b = sc.nextInt();
int a = b;
int r = 0;
String c = "";
while(a>=1)
{
if(a%2==0)
{
c=c+"0";
}
else
{
c=c+"1";
}
a=a/2;
}
int k = c.length();
for(int i = k-1;i>=0;i--)
{
if(c.charAt(i)=='1')
{
r++;
}
}
if(r%2!=0)
{
System.out.println("Entered number is a ODIOUS Number");
}
else
{
System.out.println("Entered number is not a ODIOUS Number");
}
}
}

Output :

odious-number

Write a program to input a number and check whether it is Evil Number or not? (5...binary...101.no. of ones is 2 and it is even.so it is evil no.)

Write a program to input a number and check whether it is Evil Number or not? (5...binary...101.no. of ones is 2 and it is even.so it is evil no.)

76) Write a program to input a number and check whether it is Evil Number or not? (5...binary...101.no. of ones is 2 and it is even.so it is evil no.)

import java.util.*;
public class Evil_num
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int b = sc.nextInt();
int a = b;
int r = 0;
String c = "";
while(a>=1)
{
if(a%2==0)
{
c=c+"0";
}
else
{
c=c+"1";
}
a=a/2;
}
int k = c.length();
for(int i = k-1;i>=0;i--)
{
if(c.charAt(i)=='1')
{
r++;
}
}
if(r%2==0)
{
System.out.println("Entered number is a EVIL Number");
}
else
{
System.out.println("Entered number is not a EVIL Number");
}
}
}

Output :

evil-number

Write a program to input a number in Hexadecimal form and convert it decimal form? (64 in Hexadecimal then 100 in decimal, 16⁰, 16¹, ….)

Write a program to input a number in Hexadecimal form and convert it decimal form? (64 in Hexadecimal then 100 in decimal, 16^0, 16^1, ….)

75) Write a program to input a number in Hexadecimal form and convert it decimal form? (64 in Hexadecimal then 100 in decimal, 16⁰, 16¹, ….)

import java.util.*;
public class Hexadecimal_in_Decimal
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a HEXADECIMAL number");
String b = sc.nextLine();
int a = b.length();
int m = 0;
int r = a-1;
int c = 0;
while(m<a)
{
char d = b.charAt(r);
int x = (int)Math.pow(16,m);
m++;
if(d=='0')
{
c=c+0*x;
}
else if(d=='1')
{
c=c+1*x;
}
else if(d=='2')
{
c=c+2*x;
}
else if(d=='3')
{
c=c+3*x;
}
else if(d=='4')
{
c=c+4*x;
}
else if(d=='5')
{
c=c+5*x;
}
else if(d=='6')
{
c=c+6*x;
}
else if(d=='7')
{
c=c+7*x;
}
else if(d=='8')
{
c=c+8*x;
}
else if(d=='9')
{
c=c+9*x;
}
else if(d=='a'||d=='A')
{
c=c+10*x;
}
else if(d=='B'||d=='b')
{
c=c+11*x;
}
else if(d=='c'||d=='C')
{
c=c+12*x;
}
else if(d=='D'||d=='d')
{
c=c+13*x;
}
else if(d=='e'||d=='E')
{
c=c+14*x;
}
else if(d=='F'||d=='f')
{
c=c+15*x;
}
r--;
}
System.out.println(b+" in DECIMAL = "+c);
}
}

Output :

hexadecimal-to-decimal

Write a program to input a number in Octal form and convert it Decimal form? (10 in octal then 8 in decimal, 8⁰, 8¹, ….)

Write a program to input a number in Octal form and convert it Decimal form? (10 in octal then 8 in decimal, 8^0, 8^1, ….)

74) Write a program to input a number in Octal form and convert it Decimal form? (10 in octal then 8 in decimal, 8⁰, 8¹, ….)

import java.util.*;
public class Octal_to_Decimal
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a OCTAL number");
int b = sc.nextInt();
int a = b;
int m = 0;
int r = 0;
while(a>0)
{
int d = a%10;
int x = (int)Math.pow(8,m);
r = r+(x*d);
m++;
a=a/10;
}
System.out.println(b+" in DECIMAL = "+r);
}
}

Output :

octal-to-decimal

Write a program to input a number in Binary form and convert it Decimal form? (1010 in binary then 10 in decimal, 2⁰, 2¹……)

Write a program to input a number in Binary form and convert it Decimal form? (1010 in binary then 10 in decimal, 2^0 , 2^1……)

73) Write a program to input a number in Binary form and convert it Decimal form? (1010 in binary then 10 in decimal, 2⁰, 2¹……)

import java.util.*;
public class Binary_to_decimal
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a BINARY number");
int b = sc.nextInt();
int a = b;
int m = 0;
int r = 0;
while(a>0)
{
int d = a%10;
int x = (int)Math.pow(2,m);
r = r+(x*d);
m++;
a=a/10;
}
System.out.println(b+" in DECIMAL = "+r);
}
}

Output :

binary-to-decimal

Write a program to input a number in Decimal and convert it Hexadecimal form? (100 in decimal then 64 in hexadecimal, divide by 16)

Write a program to input a number in Decimal and convert it Hexadecimal form? (100 in decimal then 64 in hexadecimal, divide by 16)

72) Write a program to input a number in Decimal and convert it Hexadecimal form? (100 in decimal then 64 in hexadecimal, divide by 16)

import java.util.*;
public class Decimal_to_Hexadeciamal
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int b = sc.nextInt();
int a = b;
String c = "";
while(a>=1)
{
if(a%16<10&&a%16>-1)
{
c=c+(a%16);
}
else if(a%16==10)
{
c=c+"A";
}
else if(a%16==11)
{
c=c+"B";
}
else if(a%16==12)
{
c=c+"C";
}
else if(a%16==13)
{
c=c+"D";
}
else if(a%16==14)
{
c=c+"E";
}
else if(a%16==15)
{
c=c+"F";
}
a=a/16;
}
int k = c.length();
System.out.print("Entered number in HEXADECIMAL = ");
for(int i = k-1;i>=0;i--)
{
System.out.print(c.charAt(i));
}
}
}

Output :

decimal-to-hexadecimal

Write a program to input a number in Decimal and convert it Octal form?( 8 in decimal then 10 in octal, divide by 8)

Tuesday, August 4, 2020

Write a program to input a number in Decimal and convert it Octal form?( 8 in decimal then 10 in octal, divide by 8)

71) Write a program to input a number in Decimal and convert it Octal form?( 8 in decimal then 10 in octal, divide by 8)

import java.util.*;
public class Decimal_to_octal
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int b = sc.nextInt();
int a = b;
String c = "";
while(a>=1)
{
c=c+(a%8);
a=a/8;
}
int k = c.length();
System.out.print("Entered number in OCTAL = ");
for(int i = k-1;i>=0;i--)
{
System.out.print(c.charAt(i));
}
}
}

Output :

decimal-to-octal

Write a program to input a number in Decimal and convert it Binary form?(9 in decimal then 1001 in binary, divide by 2)

Write a program to input a number in Decimal and convert it Binary form?(9 in decimal then 1001 in binary, divide by 2)

70) Write a program to input a number in Decimal and convert it Binary form?(9 in decimal then 1001 in binary, divide by 2)

import java.util.*;
public class Decimal_to_binary
{
public static void main(String args[ ])
{
Scanner sc = new Scanner (System.in);
System.out.println("Enter a number");
int b = sc.nextInt();
int a = b;
String c = "";
while(a>=1)
{
c=c+(a%2);
a=a/2;
}
int k = c.length();
System.out.print("Entered number in BINARY = ");
for(int i = k-1;i>=0;i--)
{
System.out.print(c.charAt(i));
}
}
}

Output :

decimal-to-binary

Write a program to input a number and check whether it is Emirp Number (Twisted Prime) or not?(13 and its reverse 31,both are prime)

Sunday, August 23, 2020

83) Write a program to input a number and check whether it is Happy Number or not? (28=22+82=4+64=68,62+82=36+64=100,12+02+02=1+0+0=1)

Output :

Friday, August 7, 2020

82) Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1)

Output :

81) Write a program to input a number and check whether it is Amicable Pair Number or not?(220,284|| sum of factors of 220 is equal to 284 and sum of factors of 284 is equal to 220 then it is amicable pair Number)

Output :

Wednesday, August 5, 2020

80) Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

Output :

79) Write a program to input a number and check whether it is Adam Number or not? (122 =144 , 212 = 441 = 144, 144=144 )

Output :

78) Write a program to input a number and check whether it is Disarium Number or not? (135=11+32+53=1+9+125=135)

Output :

77) Write a program to input a number and check whether it is Odious Number or not? (7…binary…111.no. of ones is 3 and it is odd.so it is odious no.)

Output :

76) Write a program to input a number and check whether it is Evil Number or not? (5...binary...101.no. of ones is 2 and it is even.so it is evil no.)

Output :

75) Write a program to input a number in Hexadecimal form and convert it decimal form? (64 in Hexadecimal then 100 in decimal, 160, 161, ….)

Output :

74) Write a program to input a number in Octal form and convert it Decimal form? (10 in octal then 8 in decimal, 80, 81, ….)

Output :

73) Write a program to input a number in Binary form and convert it Decimal form? (1010 in binary then 10 in decimal, 20 , 21……)

Output :

72) Write a program to input a number in Decimal and convert it Hexadecimal form? (100 in decimal then 64 in hexadecimal, divide by 16)

Output :

Tuesday, August 4, 2020

71) Write a program to input a number in Decimal and convert it Octal form?( 8 in decimal then 10 in octal, divide by 8)

Output :

70) Write a program to input a number in Decimal and convert it Binary form?(9 in decimal then 1001 in binary, divide by 2)

Output :

83) Write a program to input a number and check whether it is Happy Number or not? (28=2²+8²=4+64=68,6²+8²=36+64=100,1²+0²+0²=1+0+0=1)

79) Write a program to input a number and check whether it is Adam Number or not? (12²=144 , 21²= 441 = 144, 144=144 )

78) Write a program to input a number and check whether it is Disarium Number or not? (135=1¹+3²+5³=1+9+125=135)

75) Write a program to input a number in Hexadecimal form and convert it decimal form? (64 in Hexadecimal then 100 in decimal, 16⁰, 16¹, ….)

74) Write a program to input a number in Octal form and convert it Decimal form? (10 in octal then 8 in decimal, 8⁰, 8¹, ….)

73) Write a program to input a number in Binary form and convert it Decimal form? (1010 in binary then 10 in decimal, 2⁰, 2¹……)