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Question

What is the time complexity of following code: 
int a = 0;
for (i = 0; i < N; i++) 
{
for (j = N; j > i; j--) 
{
a = a + i + j;
}
}

a.

O(N)

b.

O(N*log(N))

c.

O(N * Sqrt(N))

d.

O(N*N)

Posted under Data Structures and Algorithms

Answer: (d).O(N*N)

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