Prove the sieve of eratosthenes algorithm

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Reference no: EM132124778

Prove the Sieve of Eratosthenes algorithm has runtime complexity ≤ O(n log log n).

Sieve

Input: an integer n > 1.

Let A be an array of Boolean values, indexed by integers 2 to n, initially all set to true.

for i = 2,3,4,..., not exceeding √n:

if A[i] is true:

for j = i2,i2 + i,i2 +2i,i2 +3i,..., not exceeding n:

A[j] := false.

Output: all i such that A[i] is true.

Reference no: EM132124778

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