How to check if an array of integers contain a duplicate number

Answer 1

I would like to see your try first, how about that?

Answer 2

Hint:
* Sort the array.
* Save the first element into a variable, assume it as previous value.
* Iterate through it beginning from the second element.
* During iteration see through it, whether the current element value equals the previous one.
* If current value equal to previous value then you know that array contains a duplicate.
* If current value not equal to the previous one then assign current value to previous value and continue with next element.

Answer 3

Tq so much Ipang..😇 But can you please send me the code too🙏

Answer 4

Okk

Answer 5

Plz check my post

Answer 6

Tq so much Hima

Answer 7

take xor (^) with every element
if the result is a non-zero value then your array contains duplicate value/values
if it is 0 then it doesn't.