import java.util.Scanner;
import java.lang.Math;
public class Main
{
public static void main(String args[])
{
int sum = 0, n;
Scanner sc = new Scanner(System.in);
System.out.print("Enter the number to check: ");
n = sc.nextInt();
int square = n * n;
while(square != 0)
{
int digit = square % 10;
sum = sum + digit;
square = square / 10;
}
if(n == sum)
System.out.println(n + " is a Neon Number.");
else
System.out.println(n + " is not a Neon Number.");
}
}
import java.util.Scanner;
import java.lang.Math;
public class Main
{
public static int convertDecimalToBinary(int dec) {
int rem,b1=0;
int rev = 1;
while (dec > 0) {
rem = dec % 2;
dec = dec / 2;
b1 = b1 + rem * rev;
rev = rev * 10;
}
return b1;
}
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.print("Enter a number : ");
int num = in.nextInt();
int decimal = convertDecimalToBinary(num);
System.out.println("Binary to Decimal");
System.out.println(num + " = " + decimal);
}
}
import java.util.Scanner;
import java.lang.Math;
public class Main
{
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.print("Enter a number to check: ");
int num = in.nextInt();
int count=0;
int square = num*num;
int temp = num;
while(temp>0)
{
count++;
temp=temp/10;
}
int lastDigit = (int) (square%(Math.pow(10, count)));
if(num == lastDigit)
System.out.println(num+ " is an automorphic number.");
else
System.out.println(num+ " is not an automorphic number.");
}
}
import java.util.Scanner;
import java.lang.Math;
public class Main
{
static boolean isArmstrong(int n)
{
int temp, digits=0, last=0, sum=0;
temp=n;
while(temp>0)
{
temp = temp/10;
digits++;
}
temp = n;
while(temp>0)
{
last = temp % 10;
sum += (Math.pow(last, digits));
temp = temp/10;
}
if(n==sum)
return true;
else return false;
}
public static void main(String args[])
{
int num;
Scanner sc= new Scanner(System.in);
System.out.print("Enter the limit: ");
num=sc.nextInt();
if(isArmstrong(num))
System.out.print(num+ " is armstrong Number ");
}
}
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println( " enter a value");
int n1=0,n2=1,n3,i,count;
count = sc.nextInt();
for(i=1;i<=count;++i)//loop starts from 2 because 0 and 1 are already printed
{
n3=n1+n2;
System.out.print(" "+n1);
n1=n2;
n2=n3;
}
}}
import java.util.*;
public class Main
{public static int isHappyNumber(int num){
int rem = 0, sum = 0;
while(num > 0){
rem = num%10;
sum = sum + (rem*rem);
num = num/10;
}
return sum;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println( " enter a value");
int num = sc.nextInt();
int result = num;
while(result != 1 && result != 4){
result = isHappyNumber(result);
}
if(result == 1)
System.out.println(num + " is a happy number");
else if(result == 4)
System.out.println(num + " is not a happy number");
}
}
import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
int n, remainder = 1, number, sum = 0;
Scanner sc = new Scanner(System.in);
System.out.print("Enter a number you want to check: ");
n = sc.nextInt();
number = n;
while (number > 9)
{
while (number > 0)
{
remainder = number % 10;
sum = sum + remainder;
number = number / 10;
}
number = sum;
sum = 0;
}
if (number == 1)
{
System.out.println("The given number is a magic number.");
}
else
{
System.out.println("The given number is not a magic number.");
}
}
}
import java.util.Scanner;
import java.util.Random;
public class Main
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a word: ");
String word = scanner.nextLine();
scanner.close();
String convertedWord = convertWord(word);
System.out.println("Converted word: " + convertedWord);
}
private static String convertWord(String word)
{
StringBuilder converted = new StringBuilder();
for (int i = 0; i < word.length(); i++)
{char convertedChar;
char c = word.charAt(i);
if (c!=' '){
convertedChar = convertCharacter(c);}else{convertedChar =' ';}
converted.append(convertedChar);
}
return converted.toString();
}
private static char convertCharacter(char c)
{
if (isVowel(c))
{
return findNearestConsonant(c);
}
else
{
return findNearestVowel(c);
}
}
private static boolean isVowel(char c)
{
c = Character.toLowerCase(c);
return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
}
private static char findNearestConsonant(char c)
{
while (true)
{
c--;
if (!isVowel(c))
{
return c;
}
}
}
private static char findNearestVowel(char c)
{
while (true)
{
c++;
if (isVowel(c))
{
return c;
}
}
}
}
import java.util.Scanner;
import java.util.Random;
public class Main
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a string: ");
String inputString = scanner.nextLine();
String[] words = inputString.split(" ");
System.out.println("Words with repeating characters:");
for (String word : words)
{
if (hasRepeatingCharacters(word))
{
System.out.println(word);
}
}
scanner.close();
}
private static boolean hasRepeatingCharacters(String word)
{
for (int I = 0; I < word.length() - 1; I++)
{
char currentChar = word.charAt(I);
for (int j = I + 1; j < word.length(); j++)
{
if (currentChar == word.charAt(j))
{
return true;
}
}
}
return false;
}
}
Enter a string: bbn bnb vbn xcdxx
Words with repeating characters:
bbn
bnb
xcdxx
Write a program to form a square Matrix of characters and display the row and column having the max valued characters .
import java.util.Scanner;
import java.util.Random;
public class Main
{
public static void main(String[] args) {
int size = 5;
char[][] matrix = generateRandomMatrix(size);
System.out.println("Matrix:");
displayMatrix(matrix);
int[] maxIndices = findMaxValueIndices(matrix);
int maxRow = maxIndices[0];
int maxCol = maxIndices[1];
System.out.println("\nRow and column with maximum valued character:");
System.out.println("Row: " + maxRow);
System.out.println("Column: " + maxCol);
}
public static char[][] generateRandomMatrix(int size)
{
char[][] matrix = new char[size][size];
Random random = new Random();
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
matrix[i][j] = (char) (random.nextInt(26) + 'A');
}
}
return matrix;
}
public static void displayMatrix(char[][] matrix)
{
int size = matrix.length;
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
System.out.print(matrix[i][j] + " " );
}
System.out.println();
}
}
public static int[] findMaxValueIndices(char[][] matrix)
{
int size = matrix.length;
int maxRow = 0;
int maxCol = 0;
int maxValue = matrix[maxRow][maxCol];
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
if (matrix[i][j] > maxValue)
{
maxRow = i;
maxCol = j;
maxValue = matrix[i][j];
}
}
}
return new int[] { maxRow, maxCol };
}
}
Matrix:
L T B G E
R I K G Q
W R L O D
S X V O B
B Y U O G
Row and column with maximum valued character:
Row: 4
Column: 1
