源代碼\用動態規劃算法計算序列關系個數
用關系"<"和"="將3個數a,b,c依次序排列時,有13種不同的序列關系:
a=b=c,a=b<c,a<b=v,a<b<c,a<c<b
a=c<b,b<a=c,b<a<c,b<c<a,b=c<a
c<a=b,c<a<b,c<b<a
若要將n個數依序列,設計一個動態規劃算法,計算出有多少種不同的序列關系,
要求算法只占用O(n),只耗時O(n*n).
標簽:
lt
源代碼
動態規劃
序列
上傳時間:
2013-12-26
上傳用戶:siguazgb
The government of a small but important country has decided that the alphabet needs to be streamlined and reordered. Uppercase letters will be eliminated. They will issue a royal decree in the form of a String of B and A characters. The first character in the decree specifies whether a must come ( B )Before b in the new alphabet or ( A )After b . The second character determines the relative placement of b and c , etc. So, for example, "BAA" means that a must come Before b , b must come After c , and c must come After d .
Any letters beyond these requirements are to be excluded, so if the decree specifies k comparisons then the new alphabet will contain the first k+1 lowercase letters of the current alphabet.
Create a class Alphabet that contains the method choices that takes the decree as input and returns the number of possible new alphabets that conform to the decree. If more than 1,000,000,000 are possible, return -1.
Definition
標簽:
government
streamline
important
alphabet
上傳時間:
2015-06-09
上傳用戶:weixiao99
Visual Basic 6.0可以通過調用API函數格式化一個磁盤,無論是軟盤還是硬盤。
打開一個新的項目(工程1) ,如果你沒有更改過缺省模式,那么Visual Basic 6.0會自動添加一個form1文件,在form1上添加一個命令控件,將下面的代碼拷入。
Option Explicit
Private Declare Function SHFormatDrive Lib"shell32"( ByVal Hend AS Long,ByVal Drive AS Long,ByVal FormatID AS Long,ByVal Options AS Long) as Long
Private Sub FormatDisk(intDrive as integer,blnQuickFormat as Boolean)
dim lngReturn As Long
if (blnQuickFormat) then
lngReturn= SHFormatDrive(0,intDrive,0&,1&)
else
lngReturn= SHFormatDrive(0,intDrive,0&,0&)
end if
end Sub
Private Sub Command1_Click()
call FormatDisk(0,True)
End Sub
運行此程序。
注意FormatDisk函數的第一個變量很重要,他的值是0,1,2時代表格式化的分別是:A、B、C盤。
標簽:
Visual
Basic
6.0
API
上傳時間:
2015-10-05
上傳用戶:kytqcool