Número de Armstrong en un programa JAVA que utiliza un bucle For
james hartman
¿Qué es el número Armstrong?
En un número de Armstrong, la suma de las potencias de los dígitos individuales es igual al número mismo.
En otras palabras, la siguiente ecuación será válida
xy..z = xn + yn+.....+ zn
n es el número de dígitos en el número
Por ejemplo, este es un número Armstrong de 3 dígitos.
370 = 33 + 73 + o3 = 27 + 343 + 0 = 370
Ejemplos de Armstrong Numbers
0, 1, 4, 5, 9, 153, 371, 407, 8208, etc.
Escribamos esto en un programa:
Java Programa para comprobar si un número es un número Armstrong
//ChecktempNumber is Armstrong or not using while loop
package com.guru99;
public class ArmstrongNumber {
public static void main(String[] args) {
int inputArmstrongNumber = 153; //Input number to check armstrong
int tempNumber, digit, digitCubeSum = 0;
tempNumber = inputArmstrongNumber;
while (tempNumber != 0)
{
/* On each iteration, remainder is powered by thetempNumber of digits n
*/
System.out.println("Current Number is "+tempNumber);
digit =tempNumber % 10;
System.out.println("Current Digit is "+digit);
//sum of cubes of each digits is equal to thetempNumber itself
digitCubeSum = digitCubeSum + digit*digit*digit;
System.out.println("Current digitCubeSum is "+digitCubeSum);
tempNumber /= 10;
}
//check giventempNumber and digitCubeSum is equal to or not
if(digitCubeSum == inputArmstrongNumber)
System.out.println(inputArmstrongNumber + " is an Armstrong Number");
else
System.out.println(inputArmstrongNumber + " is not an Armstrong Number");
}
}
Salida
Current Number is 153 Current Digit is 3 Current digitCubeSum is 27 Current Number is 15 Current Digit is 5 Current digitCubeSum is 152 Current Number is 1 Current Digit is 1 Current digitCubeSum is 153 153 is an Armstrong Number
Java Programa para imprimir números Armstrong del 0 al 999
//ChecktempNumber is Armstrong or not using while loop
package com.guru99;
public class ArmstrongNumber {
public static void main(String[] args) {
int tempNumber, digit, digitCubeSum;
for (int inputArmstrongNumber = 0; inputArmstrongNumber < 1000; inputArmstrongNumber++) {
tempNumber = inputArmstrongNumber;
digitCubeSum = 0;
while (tempNumber != 0) {
/* On each iteration, remainder is powered by thetempNumber of digits n
*/
digit = tempNumber % 10;
//sum of cubes of each digits is equal to thetempNumber itself
digitCubeSum = digitCubeSum + digit * digit * digit;
tempNumber /= 10;
}
//check giventempNumber and digitCubeSum is equal to or not
if (digitCubeSum == inputArmstrongNumber)
System.out.println(inputArmstrongNumber + " is an Armstrong Number");
}
}
}
Salida
0 is an Armstrong Number 1 is an Armstrong Number 153 is an Armstrong Number 370 is an Armstrong Number 371 is an Armstrong Number 407 is an Armstrong Number
