VB6求兩個字串最長公共子串的問題

function lcs(byval a as string, byval b as string) as string

if len(a) * len(b) = 0 then lcs = "": exit function

dim la as integer, lb as integer, achar() as string, bchar() as string, c() as integer, i as integer, j as integer, max as integer

la = len(a)

lb = len(b)

redim achar(la - 1)

redim bchar(lb - 1)

redim c(la - 1)

for i = 1 to la

achar(i - 1) = mid(a, i, 1)

next

for i = 1 to lb

bchar(i - 1) = mid(b, i, 1)

next

max = 0

for i = 0 to lb - 1

for j = la - 1 to 0 step -1

if bchar(i) = achar(j) then

if i * j = 0 then

c(j) = 1

else

c(j) = c(j - 1) + 1

end if

else

c(j) = 0

end if

if c(j) > max then max = c(j): lcs = mid(a, j + 2 - max, max)

next

next

if max = 0 then lcs = ""

end function 

private sub command1_click()

msgbox lcs("如果你想推薦本文到csdn 技術中心，請選擇下列的文章分類之一。文章儲存時將自動提交到csdn技術中心，通過審核後本文將出現在您的csdn 技術中心的專欄中。", "如果您不希望本文被提交到csdn技術中心，請選擇""不發表到csdn技術中心""")

end sub

返回 「提交到csdn技術中心，」

VB6求兩個字串最長公共子串的問題

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