Given an array of length N containing integers between 1
and N, determine if it contains any duplicates.
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Answer / ramkumar
What if the array is
1) 1,2,3,4,5
2) 1,2,2,5,5
both sums to 15!!
| Is This Answer Correct ? | 8 Yes | 2 No |
Answer / sid
duplicate = False;
for (i =1; i <= N; i++)
{
a[a[i] % N] += N;
}
for (i =1; i <= N; i++)
{
if (a[i] / N >= 2)
{
duplicate = True;
}
}
return duplicate;
| Is This Answer Correct ? | 14 Yes | 17 No |
Answer / ash
If the question is just to find just whether there are
duplicates in the array, we can just sum all the numbers
and if the sum is less than n(n+1)/2, some number in the
array has repeated.
| Is This Answer Correct ? | 8 Yes | 39 No |
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