Sum(Large) || Newton school assignments solution in java
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problems solution
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String Basics - Post Class - Sum(Large)
Sum(Large)
Time Limit: 2 sec
Memory Limit: 128000 kB
Problem Statement
Given two integers a and b your task is to print the summation of these two numbers
Input
Input contains a single line containing two space separated integers a and b.
Constraints:-
1 <= a, b <= 1020000
Output
Print the sum of a and b.
Example:
Sample Input:-
3 8
Sample Output:-
11
Sample Input:-
15 1
Sample Output:-
16
Solutions
import java.io.*; // for handling input/output
import java.util.*; // contains Collections framework
// don't change the name of this class
// you can add inner classes if needed
class Main {
public static void main (String[] args) {
// Your code here
Scanner sc = new Scanner(System.in);
String s1 = sc.next();
String s2 = sc.next();
int n= s1.length();
int m= s2.length();
int i=n-1 , j=m-1 , carry=0 , lastdigit , addition ;
String result = "";
while(i>=0 && j>=0){
addition = s1.charAt(i)-'0' + s2.charAt(j)-'0' + carry ;
lastdigit = addition%10;
carry = addition/10;
result = lastdigit + result ;
i--;
j--;
}
if(i==-1 && j==-1 && carry!=0){
result = carry + result ;
}else if(i>=0){
while(carry!=0){
if(i==-1){
result = carry + result ;
carry = 0;
}
else{
addition = s1.charAt(i)-'0' + carry ;
lastdigit = addition%10;
carry = addition/10;
result = lastdigit + result ;
i--;
}
}
if(i>=0){
result = s1.substring(0,i+1) + result;
}
}
else if(j>=0){
while(carry!=0){
if(j==-1){
result = carry + result ;
carry = 0;
}
else{
addition = s2.charAt(j)-'0' + carry ;
lastdigit = addition%10;
carry = addition/10;
result = lastdigit + result ;
j--;
}
}
if(j>=0){
result = s2.substring(0,j+1) + result;
}
}
System.out.println(result);
}
}
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