返回指定字符在字符串中的数量

stjie

例如:我想查找在此"How much wood could a woodchuck chuck is a woodchuck could chuck wood?"中包含有几个 wood的,需要如何实现??string带的函数没有包括这个在内,我要怎么实现?

[ 本帖最后由 stjie 于 2008-12-6 11:52 编辑 ]

booby

string带的函数有

大绯狼

写了4个方法
1.
[au3]$a = "How much wood could a woodchuck chuck is a woodchuck could chuck wood?"
$b = StringRegExp($a, 'wood', 3)
MsgBox(0, 0, UBound($b))[/au3]
2.
[au3]$num = 0
$i = 0
While 1
        $a=StringRight($a, StringLen($a) - $num)
        $num = StringInStr($a, "wood")
        If $Num = 0 Then
                ExitLoop
        Else
                $i += 1
        EndIf
WEnd
MsgBox(0,0,$i)[/au3]
3.
[au3]$i=0
While 1
        $string=StringInStr($a,"wood",0,$i+1)
        If $string=0 Then
                ExitLoop
        Else
                $i+=1
        EndIf
WEnd
MsgBox(0,0,$i)[/au3]
4.
[au3]MsgBox(0, 0,UBound(StringSplit($a, "wood", 1))-2)[/au3]

[ 本帖最后由 大绯狼 于 2008-12-6 11:10 编辑 ]

stjie

谢谢,学到了~