Download presentation

Presentation is loading. Please wait.

1
**Sorting algorithms Sieve of Eratosthenes**

Dr. Szczepan Paszkiel Department of Electrical, Control & Computer Engineering Institute of Control & Computer Engineering Opole University of Technology

2
**Sieve of Eratosthenes - pseudocode**

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, ..., √n : if A[i] is true: for j = i2, i2+i, i2+2i, ..., n: A[j] := false Now all i such that A[i] is true are prime.

3
**Sieve of Eratosthenes flowchart**

YES Sieve of Eratosthenes flowchart NO a[i] = true - prime number a[i] = false - composite number NO YES

4
**Sieve of Eratosthenes in C++**

for(int i = 2; i <= N; i++) a[i] = 1; max = (int)sqrt(N); for(i = 2; i <= max; i++) if(a[i]==1) { j = i + i; while(j <= N) a[j] = 0; j += i; }

Similar presentations

Presentation is loading. Please wait....

OK

Prime and Composite Numbers

Prime and Composite Numbers

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on idiopathic thrombocytopenia purpura Ppt on chemical bonding and structures Ppt on pin diode switch Download ppt on statistics for class 11 Ppt on sound navigation and ranging system of a down Convert pps file to ppt online Ppt on national education policy 1986 monte Ppt on types of forests in india Ppt on pin diode limiter Ppt on mammals and egg laying animals are called