Latest Google Aptitude Question SOLUTION: implement adding twounsighned numbers without using + or ++

• Placement Papers
• /
• Google
• /
• General Ability
• /
• General Knowledge

Google Question Papers: GOOGLE Company Profile

(#M40013149) GOOGLE General Ability question Keep an EYE

implement adding twounsighned numbers without using + or ++

Asked In Google puneet gangwani (11 years ago)

Unsolved Read Solution (10)

Is this Puzzle helpful?   (10)   (2) Submit Your Solution General Knowledge

Read Solution (10) :

mogal samrat  (11 years ago)

suppose two numbers a and b then a-(-b)=sum of a and b;

Is this solution Helpfull? Yes (10) | No (4)  

mani sowndarya  (11 years ago)

As we know a^2-b^2= (a+b)(a-b)

so a+b= (a^2-b^2) / (a-b)

and 2nd one is
int add (int a, int b)
{
int c, d;
if (b == 0)
{
return a;
}

c = a ^ b; // xor takes sum
d = a & b; // collect carry;
d = d

Is this solution Helpfull? Yes (8) | No (2)  

Syamily M.S  (11 years ago)

if x and y are the two unsigned numbers, then
x+y = (x*x-y*y)/(x-y)
eg: x=5 and y=2
5+2=7
(x*x-y*y)/(x-y)=(5*5-2*2)/(5-2)
=(25-4)/3
=21/3
=7

Is this solution Helpfull? Yes (4) | No   

keerthana chennamsetty  (9 years ago)

use or between 2 unsigned numbers

Is this solution Helpfull? Yes (1) | No   

Shubham Upadhyay  (7 years ago)

1. Take first number, multiply it with -1.
2. Subtract second number from step 1.
3. Multiply the result with -1 again.
2 numbers are added without using + or ++.

Is this solution Helpfull? Yes (1) | No   

VISHAL VERMA  (10 years ago)

Sum of two bits can be obtained by performing XOR (^) of the two bits. Carry bit can be obtained by performing AND (&) of two bits

int Add(int x, int y)
{
if (y == 0)
return x;
else
return Add( x ^ y, (x & y)

Is this solution Helpfull? Yes | No   

sachin  (9 years ago)

Perform logical OR operation.

Is this solution Helpfull? Yes | No   

sivakumar  (7 years ago)

#include

int Add(int x, int y)
{
// Iterate till there is no carry
while (y != 0)
{

int carry = x & y;

// Sum of bits of x and y where at least one of the bits is not set
x = x ^ y;

// Carry is shifted by one so that adding it to x gives the required sum
y = carry

Is this solution Helpfull? Yes | No   

Sarau yadav  (7 years ago)

use or between 2 unsigned numbers

Is this solution Helpfull? Yes | No   

shami  (4 years ago)

we can add two unsigned numbers without using +or ++
for ex :
import java.util.scanner
class Add
{
public static void main(String[] arg)
{
int a,b,c;
Scanner sc=new Scanner(System.in);
System.out.println("Enter first number");
a=sc.nextInt();
System.out.println("Enter second number");
b=sc.nextInt();
c=addition(a,b);
System.out.println(" Addition of two numbers is : "+c);
}
static int addition(int x,int y)
{
return x+y;
}
}

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.