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Lab05.java
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Lab05.java
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/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
import java.util.Scanner;
/**
*
* @author Nick
*/
public class Lab05 {
/**
* @param number1
* @param number2
* @return
*/
public static String addNums(String number1, String number2){
char[] num1char = number1.toCharArray();
char[] num2char = number2.toCharArray();
if (num1char.length > num2char.length) {
num2char = formatLength(num1char, num2char);
} else if (num1char.length < num2char.length) {
num1char = formatLength(num2char, num1char);
}
final char[] addition = new char[num1char.length + 1];
char carry = '0';
for (int i = num1char.length - 1; i >= 0; i--) {
int sum = Character.getNumericValue(num1char[i]) + Character.getNumericValue(num2char[i]) + Character.getNumericValue(carry);
char[] csum = String.valueOf(sum).toCharArray();
carry = '0';
if (csum.length > 1 && i == 0) {
addition[i + 1] = csum[1];
addition[0] = csum[0];
} else if (csum.length > 1) {
carry = csum[0];
addition[i + 1] = csum[1];
} else {
addition[i + 1] = csum[0];
}
}
return String.valueOf(addition);
}
public static char[] formatLength(char[] num1char, char[] num2char) {
int diff = num1char.length - num2char.length;
char[] num = new char[num1char.length];
for (int i = 0; i < diff; i++) {
num[i] = '0';
}
for (int i = 0; i < num2char.length; i++) {
num[diff + i] = num2char[i];
}
return num;
}
public static void main(String[] args){
Scanner in=new Scanner(System.in);
System.out.println("Enter the first number: ");
String firstNum=in.next();
System.out.println("Enter the second number: ");
String secondNum=in.next();
String finalNum=addNums(firstNum,secondNum);
System.out.println(" "+firstNum);
System.out.println("+ "+secondNum);
System.out.print("= "+ finalNum);
}
}