Chpt9 patternmatching

Outline and Reading ,[object Object],[object Object],[object Object],[object Object],[object Object]

Strings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Brute-Force Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Boyer-Moore Heuristics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Last-Occurrence Function ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object], 1 3 5 4 L ( c ) d c b a c

The Boyer-Moore Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Case 1: j  1  l Case 2: 1  l   j

Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The KMP Algorithm - Motivation ,[object Object],[object Object],[object Object],x j . . a b a a b . . . . . a b a a b a a b a a b a No need to repeat these comparisons Resume comparing here

KMP Failure Function ,[object Object],[object Object],[object Object],1 a 3 2 b 4  2 1 0 j  1 0 0 F ( j ) a a b a P [ j ]

The KMP Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Computing the Failure Function ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example 0 c 3 1 a 4  2 1 0 j  1 0 0 F ( j ) b a b a P [ j ]

Chpt9 patternmatching

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Chpt9 patternmatching