[模板]最长有序子序列

最新推荐文章于 2024-12-23 15:08:32 发布

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最新推荐文章于 2024-12-23 15:08:32 发布

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/*#######################################[ LOS Templet Of Lyz ]#######################################*/
  
typedef bool            BOOL;
typedef unsigned int    UINT;

template < typename SEQUTYPE >

//CMP:返回所求序列中前后元素的比较关系("<","<=",">",">="即对应"升序","不降序","降序","不升序")

UINT LOS(SEQUTYPE *Sequ , UINT nSize , BOOL (*CMP)(SEQUTYPE*,SEQUTYPE*))
{
	UINT  Len , *MinID = new UINT [ nSize + 1 ];
	MinID[ Len = 1 ] = 0;
	for( UINT i = 1 ; i < nSize ; ++i )
	{
		if( ! CMP( Sequ + MinID[1]  , Sequ + i ) ) { MinID[1] = i;        continue; }
		if( CMP( Sequ + MinID[Len]  , Sequ + i ) ) { MinID[ ++Len ] = i;  continue; }
		UINT L = 1 , R = Len;
		while( L < R )
		{
			UINT M = ( L + R ) >> 1;
			if( CMP( Sequ + MinID[ M + 1 ] , Sequ + i ) ) { L = M + 1; }
			else { R = M; }
		}
		MinID[ L + 1 ] = i;
	}
	delete [] MinID;
	return Len;
}

/*#######################################[ LOS Templet Of Lyz ]#######################################*/