RosettaCodeData/Task/Jaro-similarity/BBC-BASIC/jaro-similarity.basic
2023-12-16 21:33:55 -08:00

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PRINT "Jaro similarity between the two strings:"
PROCDescribeJaro("MARTHA", "MARHTA")
PROCDescribeJaro("DIXON", "DICKSONX")
PROCDescribeJaro("JELLYFISH", "SMELLYFISH")
PROCDescribeJaro("DWAYNE", "DUANE")
PROCDescribeJaro("a", "b")
PROCDescribeJaro("", "")
END
DEF FNMax(a, b)=(a + b + ABS(a - b)) / 2
DEF FNMin(a, b)=(a + b - ABS(a - b)) / 2
DEF PROCDescribeJaro(word1$, word2$)
LOCAL d%, i%, j%, k%, l1%, l2%, m%, t%
PRINT " '" word1$ "' and '" word2$ "'" TAB(30) "= ";
IF word1$ == "" IF word2$ == "" PRINT;1 : ENDPROC
l1%=LENword1$
l2%=LENword2$
IF l1% < l2% SWAP l1%, l2% SWAP word1$, word2$
d%=l1% / 2 - 1
j%=1
FOR i%=1 TO l2%
IF MID$(word2$, i%, 1) == MID$(word1$, j%, 1) THEN
m%+=1
MID$(word1$, j%)=" "
ELSE
FOR k%=FNMax(1, i% - d%) TO FNMin(l1%, i% + d%)
IF MID$(word2$, i%, 1) == MID$(word1$, k%, 1) THEN
t%+=1
m%+=1
MID$(word1$, k%)=" "
IF k% > j% j%=k%
ENDIF
NEXT
ENDIF
j%+=1
NEXT
IF m% == 0 THEN
PRINT;0
ELSE
PRINT;(m% / l2% + m% / l1% + ((m% - (t% >> 1)) / m%)) / 3
ENDIF
ENDPROC