Sum of two array confusion

#1

i cannot understand that how is the sum being calculated ??
the first array in sample input is 1 0 2 9
and the second array is 3 4 5 6 7
if we add the corresponding indexes of both the array the output would 4,4,7,15,7
then how come the output is 3,5,5,9,6 ??

#2

Hello @Tanya25,

Your confusion is valid.

  1. The addition is taking place from last index of both index.
  2. Consider all elements of each array as one number.

The digits at 1s place are added first.
9+7=6 , carry=1
similarly for other places:
2+6+carry=8+1=9 , carry=0
0+5+carry=5 , carry =0
1+4+carry=5 , carry=0
3+carry=3

Hope, it would help.
If you still have doubts, feel free to ask.
Give a like if you are satisfied.

#3

@S18ML0016 has told you the right way to proceed . Or i should say he told you the hole algorithm . But if you still didn’t understand whats going on , than read this , this might help.

Further you can catch this thing from test case given to you , that each array element holds only one digit element . So when you are adding up two array elements in new array than again it should hold one digit in each element.
You have given a no 1029 and 34567 . And user want their addition and he stored these two no in two different arrays .
Now answer won’t change , its simple addition i.e
1029
+34567

35596

Now use your programming knowledge , to get this answer
Hint : Go to the basics , How you learn basic addition !
Thank you
:slightly_smiling_face:

#4

Please mark your doubts as resolved in your course’s “ Ask Doubt ” section, when your doubt is resolved.

If you still have any issue, let me know.