Double-Array Search

Transcript

1. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc ݕࡧͯ͠ΈΑ͏ʂ 6 -1 7 7 5
2. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc base[1]͔Βελʔτʂ “a#”Λݕࡧʂ 6 -1 7 7 5
3. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 base[1]+code(a)=4 index 4ʹҠಈ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “a#”Λݕࡧʂ 6 -1 7 7 5
4. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[4] == ભҠݩindex? OK! ભҠՄೳ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “a#”Λݕࡧʂ 6 -1 7 7 5
5. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 base[4]+code(#)=3 index 3ʹҠಈ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “a#”Λݕࡧʂ 6 -1 7 7 5
6. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[3] == ભҠݩindex? OK! ભҠՄೳ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “a#”Λݕࡧʂ 6 -1 7 7 5
7. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 base஋͕-1͸ऴ୺ Αͬͯޠኮa͸ొ࿥͞Ε͍ͯΔʂ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “a#”Λݕࡧʂ 6 -1 7 7 5
8. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ base[1]+code(b)=5 index 5ʹҠಈ 6 -1 7 7 5
9. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[5] == ભҠݩindex? OK! ભҠՄೳ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ 6 -1 7 7 5
10. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ base[5]+code(c)=6 index 6ʹҠಈ 6 -1 7 7 5
11. 7 5 3 3 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[6] == ભҠݩindex? OK! ભҠՄೳ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ 6 -1 7
12. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 base[6]+code(#)=7 index 7ʹҠಈ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ 6 -1 7 7 5
13. 7 5 3 3 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[7] == ભҠݩindex? OK! ભҠՄೳ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ 6 -1 7
14. 7 5 3 3 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “bc#”Λݕࡧʂ 6 -1 7 base஋͕-1͸ऴ୺ Αͬͯޠኮbc͸ొ࿥͞Ε͍ͯΔʂ
15. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “c”Λݕࡧʂ base[1]+code(c)=6 index 6ʹҠಈ 6 -1 7 7 5
16. 3 3 -1 3 -1 0 0 1 5 1 4 0 base check index 1 2 5 4 6 3 check[6] == ભҠݩindex? NO! “c”͸ભҠෆՄ จࣈίʔυ஋ #: 0 a: 1 b: 2 c: 3 ޠኮࣙॻ a bc “c”Λݕࡧʂ 6 -1 7 7 5