A Prefiltered Cuckoo Search Algorithm with Geometric Operators for Solving Sudoku Problems

Algorithm 4

Swap.

Input: 𝑣𝑎𝑙𝑢𝑒,𝑃𝑎𝑟𝑒𝑛𝑡[],𝑝𝑜𝑠

Output:  𝑃𝑎𝑟𝑒𝑛𝑡[]

(1) If 𝑃𝑎𝑟𝑒𝑛𝑡[𝑝𝑜𝑠]≠𝑣𝑎𝑙𝑢𝑒

(2)  For Each 𝑖∈{1,…,𝑃𝑎𝑟𝑒𝑛𝑡_{𝑙𝑒𝑛𝑔𝑡ℎ}}

(3)   If 𝑃𝑎𝑟𝑒𝑛𝑡[𝑖]=𝑣𝑎𝑙𝑢𝑒

(4)    𝑎𝑢𝑥←𝑃𝑎𝑟𝑒𝑛𝑡[𝑖]

(5)    𝑃𝑎𝑟𝑒𝑛𝑡[𝑖]←𝑃𝑎𝑟𝑒𝑛𝑡[𝑝𝑜𝑠]

(6)    𝑃𝑎𝑟𝑒𝑛𝑡[𝑝𝑜𝑠]←𝑎𝑢𝑥

(7)   End If

(8)  For Each

(9) End If