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- 2009-12-3
- 最后登录
- 2024-11-24
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【Percentile】
- inputs:
- PctRank( numericsimple ),
- PriceValue( numericseries ),
- Len( numericsimple ) ;
- variables:
- var0( 0 ),
- var1( 0 ),
- var2( 0 ),
- var3( 0 ) ;
- arrays:
- arr0[1000]( 0 ) ;
- Condition1 = PctRank >= 0 and PctRank <= 1 ;
- condition1 = Condition1 and Len > 1 ;
- if condition1 then
- begin
-
- for Value1 = 1 to Len
- begin
- arr0[Value1] = PriceValue[ Value1 - 1 ] ;
- end ;
- Value1 = SortArray( arr0, Len, -1 ) ;
-
- var0 = 1 / ( Len - 1 ) ;
-
-
- var1 = IntPortion( PctRank / var0 ) + 1 ;
- var2 = var1 + 1 ;
-
- var3 = ( PctRank - ( ( var1 - 1 ) * var0 ) ) / var0 ;
- Percentile = ( arr0[var1] ) + ( var3 * ( arr0[var2]
- - arr0[var1] ) ) ;
- end
- else
- begin
- condition1 = Condition1 and Len = 1 ;
- if condition1 then Percentile = PriceValue
- else
- Percentile = -1 ;
- end;
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