堅(jiān)持到底就是勝利

??1 // ??2006.06.13??MCRC??
??2 #include < iostream >
??3 #include < vector >
??4 #include < cstdlib >
??5 using ? namespace ?std;
??6 template < class ?T >
??7
??8 class ?matrix {
??9 public :
?10 ????matrix( int ?row, int ?col);
?11 ???? void ?set_matdata(T * data);
?12 ???? ~ matrix();
?13 ????T? operator ()( int ?row, int ?col)? const ;
?14 ????T? operator ()( int ?rwo, int ?col);
?15 ????matrix & ? operator + ( const ?matrix? & t);
?16 ????matrix & ? operator - ( const ?matrix? & t);
?17 ????matrix & ? operator * ( const ?matrix? & t);
?18 ????matrix & ? operator = ( const ?matrix? & t);
?19 ????matrix( const ?matrix? & t);
?20 ???? void ?display();
?21
?22 private :
?23
?24 ?T? ** arr?;
?25 ? int ?_row?;
?26 ? int ?_clo?;
?27 } ;
?28
?29 template < class ?T >
?30 matrix < T > ::matrix( int ?row, int ?col)
?31 {
?32 ???_row? = ?row;
?33 ???_clo? = ?col;
?34
?35 ???arr? = ? new ?T * [_row];
?36 ??? for ?( int ?i? = ? 0 ?;?i? < ?_row;?i ++ )
?37 ???????arr[i]? = new ?T[_clo];
?38 }
?39
?40
?41
?42 template < class ?T >
?43 void ?matrix < T > ::set_matdata(T? * data)
?44 {
?45 ???????? for ?( int ?i? = ? 0 ;?i? < ?_row?;i? ++ )
?46 ???????? for ?(? int ?j? = ? 0 ?;j? < ?_clo?;j? ++ )
?47 ????????????arr[i][j]? = ?? * (data? + ?_clo * i + j);
?48 }
?49
?50 template < class ?T >
?51 T?matrix < T > :: operator ?()( int ?row, int ?col)? const
?52 {
?53 ???? if ?(row? < ?_row? && ?col? < ?_clo)
?54 ?????? return ?(?arr[row][col]);
?55 ????? else
?56 ?????????exit( 0 );
?57
?58 }
?59 template < class ?T >
?60 T?matrix < T > :: operator ?()( int ?row, int ?col)
?61 {
?62 ???? if ?(row? < ?_row? && ?col? < ?_clo)
?63 ?????? return ?(?arr[row][col]);
?64 ????? else
?65 ?????????exit( 0 );
?66
?67 }
?68
?69 // ?matrix?add
?70
?71 template < class ?T >
?72 matrix < T >& ?matrix < T > :: operator ? + ( const ?matrix? & p)
?73 {
?74 ???? for ?( int ?i? = ? 0 ;?i? < ?_row?;i? ++ )
?75 ???????? for ?(? int ?j? = ? 0 ?;j? < ?_clo?;j? ++ )
?76 ????????????arr[i][j]? += ?p.arr[i][j];
?77 ???????? return ? * this ;
?78 }
?79
?80 // ?matrix?sub
?81 template < class ?T >
?82 matrix < T >& ?matrix < T > :: operator ? - ( const ?matrix? & p)
?83 {
?84 ???? for ?( int ?i? = ? 0 ;?i? < ?_row?;i? ++ )
?85 ???????? for ?(? int ?j? = ? 0 ?;j? < ?_clo?;j? ++ )
?86 ????????????arr[i][j]? -= ?p.arr[i][j];
?87 ???????? return ? * this ;
?88 }
?89
?90 // ?matrix?multi
?91 template < class ?T >
?92 matrix < T >& ?matrix < T > :: operator ? * ( const ?matrix? & p)
?93 {
?94 ?????T? ** arr_temp? = ? new ?T * [_row];
?95 ????? for ?(? int ?ii? = ? 0 ?;ii? < ?_clo?;ii? ++ )
?96 ?????????arr_temp[ii]? = ? new ?T[_clo];
?97 ????? for ?(?ii? = 0 ?;ii? < ?_row?;ii? ++ ?)
?98 ????????? for ?(? int ?jj? = ? 0 ?;jj? < ?_clo;?jj ++ )
?99 ?????????????arr_temp[ii][jj]? = ? 0 ;
100
101 ???? for ?( int ??k? = ? 0 ?;?k? < ?_row?;?k ++ )
102 ???? {
103 ???????? for ?( int ?i? = ? 0 ?;?i? < ?_row?;?i ++ )
104 ???????????? for ?(? int ?j? = ? 0 ?;j? < ?_clo?;?j ++ )
105 ????????????????arr_temp[k][i]? += ?arr[k][j]? * p.arr[j][i];
106 ????}
107 ???? for ?( int ?i? = ? 0 ?;?i? < ?_row?;i? ++ )
108 ???????? for ?( int ?j? = ? 0 ?;?j? < ?_clo?;?j? ++ )
109 ????????????arr[i][j]? = ?arr_temp[i][j];
110
111 ???? return ? * this ;
112 }
113
114 // ?dispaly?matrix
115 template < class ?T >
116 void ?matrix < T > ::display()
117 {
118 ????cout << " ================================== " << endl;
119 ???? for ?( int ?i? = ? 0 ;?i? < ?_row?;i? ++ )
120 ???? {
121 ???????? for ?(? int ?j? = ? 0 ?;j? < ?_clo?;j? ++ )
122 ????????????cout << arr[i][j] << " ?? " ;
123 ????????cout << endl;
124 ????}
125 ????cout << " ================================== " << endl << endl << endl;
126
127 }
128
129 template < class ?T >
130 matrix < T >& ?matrix < T > :: operator = ( const ?matrix < T > ? & rhs)
131 {
132 ???? if ?(? this ? != ? & rhs?)
133 ???? {
134 ????????_row? = ?rhs._row;
135 ????????_clo? = ?rhs._clo;
136 ???????? for ?(? int ?i? = ? 0 ?;i? < ?_row;i? ++ )
137 ????????????delete?[]?arr[i];
138 ????????delete[]?arr;
139
140 ????????arr? = ? new ?T * [_row];
141 ???????? for ?(? int ?j? = ? 0 ?;?j? < ?_row?;?j ++ )
142 ????????????arr[j]? = ? new ?T[_clo];
143
144 ???????? for ?(?i? = ? 0 ?;?i? < ?_row?;?i? ++ )
145 ???????????? for ?(?j? = ? 0 ?;j? < ?_clo?;j? ++ )
146 ????????????????arr[i][j]? = ?rhs.arr[i][j];
147 ????}
148 ???? return ? * this ;
149
150 }
151
152 template < class ?T >
153 matrix < T > :: ~ matrix()
154 {
155
156 ???? for ?(? int ?i? = ? 0 ;?i? < ?_row?;?i ++ ?)
157 ????????delete[]?arr[i];
158
159 ????delete[]?arr;
160
161 ????
162 }
163 template < class ?T >
164 matrix < T > ::matrix < T > ( const ?matrix < T > ? & rhs)
165 {
166 ????_row? = ?rhs._row;
167 ????_clo? = ?rhs._clo;
168
169 ????arr? = ? new ?T * [_row];
170 ????
171 ???? for (? int ?i? = ? 0 ?;i? < ?_row?;?i ++ )
172 ????????arr[i]? = ? new ?T[_clo];
173 ???? for ?(?i? = ? 0 ?;?i? < ?_row?;?i ++ )
174 ???????? for ?( int ?j? = ? 0 ?;?j? < ?_clo?;?j ++ )
175 ????????????arr[i][j]? = ?rhs.arr[i][j];
176
177
178 }
179
180