Why the output is 9 ......

Question

#this code giving me indentation error on print statement please solve this and tell me why the output is 9
a=[1,2,3,4,12,13]
for i in a:
if i%2==1:

a.append(0)
Print (len(a))

Answer 1

Akash Gupta

length is 9 because we are appending in original array.

Explaination:

a = [1, 2, 3, 4, 12, 13]

According to condition

1 % 2 == 1 //true
Now a will be a [1, 2, 3, 4, 12, 13, 0]

3 % 2 == 1 //true

Now a will be a [1, 2, 3, 4, 12, 13, 0, 0]

13 % 2 == 1 //true

Now a will be a [1, 2, 3, 4, 12, 13, 0, 0, 0]

Finally length will be 9

see here..

https://code.sololearn.com/cGydxwaIInsV/?ref=app

Answer 2

To add to Abhay 's answer: for the output to just be 9, the if should be if i%2 != 0, and print should be de-indented.

Length of a starts out at 6 and, for every odd number (assuming the 'if' is amended as above), a 0 is added to it. As this happens 3 times, len(a) is 9 at the end.

Answer 3

I believe the correct answer is AJ Anant .
If its remainder 1(odd number), append 0 to the original list (not the number).
From the list 3 of the numbers are odd so three zeros are added to the original list.
Length of list would be 9 not infinity.
Would only be infinity if the original numbers which are odd are added back.

Answer 4

Show me your Code.

Answer 5

Akash Gupta In your post and in this question condition is different. Why?

Answer 6

Akash Gupta I already solved with explaination.

Answer 7

AJ Anant - C#/Java Challenger Got it .....✌️✌️

Answer 8

It doesn't gives any indentation errors ,perhaps the error maybe about print since it is lowercase not uppercase

Also the output is
6
7
7
8
9
9
10
11
12
.
.
infinite

Which is right.

Answer 9

Akash Gupta According to your code you are printing the length inside loop that's why you are getting output like that.

Answer 10

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 andAJ Anant - C#/Java Challenger thanks for the help ......

Answer 11

Ishu Kumar There is no difference. No need to update question. In description he also mentioned why the output 9.

Answer 12

Akash Gupta Please double check the code in the challenge. This code will not give 9. If this is what the code says, report question for having wrong answer.

Answer 13

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 We each had a different guess and both were wrong! 😆

Answer 14

Akash Gupta My explanation above is still correct...

Answer 15

Be cause you are printing length of the list and also appending 0 when the elements of the list give a remainder of 1 when divided by 2 . And there are three cases when the remainder is 1 when the elements of the list is divided by 2 i.e. 1, 3, 13 .
That's why 0 has been appended 3 times in ur list and ur resultant list looks like
[1,2,3,4,12,13,0,0,0]
You can easily count that there are 9 elements in the list .
That's why the result is 9 .
Hoping that u will understand .
If the issue remains unsolved kindly message me .

Answer 16

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 Yeah, either way works!

Answer 17

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 this question is in the challenge ....and opponent mark the option which is 9

Answer 18

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 i check lot of time .how can i show you screenshot of that

Answer 19

Akash Gupta Post the picture on your own feed, then copy the link for your post into this thread

Answer 20

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 sorry bro my mistake and sry for wasting your time ... please explain it