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Thursday, November 3, 2022
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 :
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? (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 :
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 :
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 :
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 :
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, 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, 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)
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 :
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)
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 |
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79) 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 ) import java.... -
23) Write a program to input a number and check whether it is Perfect Cubes Number or not? (27 cubes of 3, 64 cubes of 4) import java...
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35) Write a program to input two numbers and check whether these are Co-Prime or not? (12=1, 2, 3, 4, 6, 12, 25=1, 5, 25 both have on...