program main !*****************************************************************************80 ! !! levenshtein_distance_test() tests levenshtein_distance(). ! ! Licensing: ! ! This code is distributed under the MIT license. ! ! Modified: ! ! 11 September 2022 ! ! Author: ! ! John Burkardt ! implicit none integer, parameter :: rk = kind ( 1.0D+00 ) integer d1 integer d2 integer m integer n character ( len = 5 ) :: s1 = 'water' character ( len = 6 ) :: s2 = 'kitten' character ( len = 8 ) :: s3 = 'saturday' character ( len = 10 ) :: s4 = 'pheromones' character ( len = 4 ) :: t1 = 'wine' character ( len = 7 ) :: t2 = 'sitting' character ( len = 6 ) :: t3 = 'sunday' character ( len = 12 ) :: t4 = 'photographer' call timestamp ( ) write ( *, '(a)' ) '' write ( *, '(a)' ) 'levenshtein_distance_test():' write ( *, '(a)' ) ' FORTRAN90 version' write ( *, '(a)' ) ' levenshtein_distance() computes the Levenshtein distance' write ( *, '(a)' ) ' between two strings.' m = len ( s1 ) n = len ( t1 ) call levenshtein_distance ( m, s1, n, t1, d1 ) d2 = 3 write ( *, '(a)' ) '' write ( *, '(a)' ) ' S = "' // s1 // '"' write ( *, '(a)' ) ' T = "' // t1 // '"' write ( *, '(a,i4)' ) ' Computed distance = ', d1 write ( *, '(a,i4)' ) ' Correct distance = ', d2 m = len ( s2 ) n = len ( t2 ) call levenshtein_distance ( m, s2, n, t2, d1 ) d2 = 3 write ( *, '(a)' ) '' write ( *, '(a)' ) ' S = "' // s2 // '"' write ( *, '(a)' ) ' T = "' // t2 // '"' write ( *, '(a,i4)' ) ' Computed distance = ', d1 write ( *, '(a,i4)' ) ' Correct distance = ', d2 m = len ( s3 ) n = len ( t3 ) call levenshtein_distance ( m, s3, n, t3, d1 ) d2 = 3 write ( *, '(a)' ) '' write ( *, '(a)' ) ' S = "' // s3 // '"' write ( *, '(a)' ) ' T = "' // t3 // '"' write ( *, '(a,i4)' ) ' Computed distance = ', d1 write ( *, '(a,i4)' ) ' Correct distance = ', d2 m = len ( s4 ) n = len ( t4 ) call levenshtein_distance ( m, s4, n, t4, d1 ) d2 = 8 write ( *, '(a)' ) '' write ( *, '(a)' ) ' S = "' // s4 // '"' write ( *, '(a)' ) ' T = "' // t4 // '"' write ( *, '(a,i4)' ) ' Computed distance = ', d1 write ( *, '(a,i4)' ) ' Correct distance = ', d2 ! ! Terminate. ! write ( *, '(a)' ) '' write ( *, '(a)' ) 'levenshtein_distance_test():' write ( *, '(a)' ) ' Normal end of execution.' write ( *, '(a)' ) '' call timestamp ( ) stop 0 end subroutine timestamp ( ) !*****************************************************************************80 ! !! timestamp() prints the current YMDHMS date as a time stamp. ! ! Example: ! ! 31 May 2001 9:45:54.872 AM ! ! Licensing: ! ! This code is distributed under the MIT license. ! ! Modified: ! ! 18 May 2013 ! ! Author: ! ! John Burkardt ! implicit none integer, parameter :: rk = kind ( 1.0D+00 ) character ( len = 8 ) ampm integer d integer h integer m integer mm character ( len = 9 ), parameter, dimension(12) :: month = (/ & 'January ', 'February ', 'March ', 'April ', & 'May ', 'June ', 'July ', 'August ', & 'September', 'October ', 'November ', 'December ' /) integer n integer s integer values(8) integer y call date_and_time ( values = values ) y = values(1) m = values(2) d = values(3) h = values(5) n = values(6) s = values(7) mm = values(8) if ( h < 12 ) then ampm = 'AM' else if ( h == 12 ) then if ( n == 0 .and. s == 0 ) then ampm = 'Noon' else ampm = 'PM' end if else h = h - 12 if ( h < 12 ) then ampm = 'PM' else if ( h == 12 ) then if ( n == 0 .and. s == 0 ) then ampm = 'Midnight' else ampm = 'AM' end if end if end if write ( *, '(i2.2,1x,a,1x,i4,2x,i2,a1,i2.2,a1,i2.2,a1,i3.3,1x,a)' ) & d, trim ( month(m) ), y, h, ':', n, ':', s, '.', mm, trim ( ampm ) return end