r705:39a5b48bcace
Fri, 10 Jul 2009 09:17:13
[Not Reviewed]
0 comments (0 inline)
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| ... | ... |
@@ -165,8 +165,9 @@ |
| 165 | 165 |
} |
| 166 | 166 |
|
| 167 | 167 |
void bubbleDown(int hole, Pair p, int length) {
|
| 168 |
if( length>1 ) {
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|
| 168 | 169 |
int child = firstChild(hole); |
| 169 |
while( child<length |
|
| 170 |
while( child<length ) {
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|
| 170 | 171 |
child = findMin(child,length); |
| 171 | 172 |
if( !less(_data[child], p) ) |
| 172 | 173 |
goto ok; |
| ... | ... |
@@ -174,6 +175,7 @@ |
| 174 | 175 |
hole = child; |
| 175 | 176 |
child = firstChild(hole); |
| 176 | 177 |
} |
| 178 |
} |
|
| 177 | 179 |
ok: |
| 178 | 180 |
move(p, hole); |
| 179 | 181 |
} |
| ... | ... |
@@ -208,23 +208,21 @@ |
| 208 | 208 |
/// This function removes the item having minimum priority. |
| 209 | 209 |
/// \pre The heap must be non-empty. |
| 210 | 210 |
void pop() {
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| 211 |
int TreeArray[_num_items]; |
|
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int i=0, num_child=0, child_right = 0; |
|
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std::vector<int> trees; |
|
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int i=0, child_right = 0; |
|
| 213 | 213 |
_data[_min].in=false; |
| 214 | 214 |
|
| 215 | 215 |
if( -1!=_data[_min].child ) {
|
| 216 | 216 |
i=_data[_min].child; |
| 217 |
|
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trees.push_back(i); |
|
| 218 | 218 |
_data[i].parent = -1; |
| 219 | 219 |
_data[_min].child = -1; |
| 220 | 220 |
|
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++num_child; |
|
| 222 | 221 |
int ch=-1; |
| 223 | 222 |
while( _data[i].child!=-1 ) {
|
| 224 | 223 |
ch=_data[i].child; |
| 225 | 224 |
if( _data[ch].left_child && i==_data[ch].parent ) {
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i=ch; |
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//break; |
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break; |
|
| 228 | 226 |
} else {
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| 229 | 227 |
if( _data[ch].left_child ) {
|
| 230 | 228 |
child_right=_data[ch].parent; |
| ... | ... |
@@ -237,43 +235,39 @@ |
| 237 | 235 |
_data[i].degree=0; |
| 238 | 236 |
} |
| 239 | 237 |
_data[child_right].parent = -1; |
| 240 |
|
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trees.push_back(child_right); |
|
| 241 | 239 |
i = child_right; |
| 242 |
++num_child; |
|
| 243 | 240 |
} |
| 244 | 241 |
} |
| 245 | 242 |
|
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int num_child = trees.size(); |
|
| 246 | 244 |
int other; |
| 247 | 245 |
for( i=0; i<num_child-1; i+=2 ) {
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if ( !_comp(_data[TreeArray[i]].prio, |
|
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_data[TreeArray[i+1]].prio) ) {
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other=TreeArray[i]; |
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TreeArray[i]=TreeArray[i+1]; |
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|
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if ( !_comp(_data[trees[i]].prio, _data[trees[i+1]].prio) ) {
|
|
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other=trees[i]; |
|
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trees[i]=trees[i+1]; |
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trees[i+1]=other; |
|
| 253 | 250 |
} |
| 254 |
fuse( |
|
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fuse( trees[i], trees[i+1] ); |
|
| 255 | 252 |
} |
| 256 | 253 |
|
| 257 | 254 |
i = (0==(num_child % 2)) ? num_child-2 : num_child-1; |
| 258 | 255 |
while(i>=2) {
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if ( _comp(_data[TreeArray[i]].prio, |
|
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_data[TreeArray[i-2]].prio) ) {
|
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other=TreeArray[i]; |
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TreeArray[i]=TreeArray[i-2]; |
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|
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if ( _comp(_data[trees[i]].prio, _data[trees[i-2]].prio) ) {
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other=trees[i]; |
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trees[i]=trees[i-2]; |
|
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trees[i-2]=other; |
|
| 264 | 260 |
} |
| 265 |
fuse( |
|
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fuse( trees[i-2], trees[i] ); |
|
| 266 | 262 |
i-=2; |
| 267 | 263 |
} |
| 268 |
_min = |
|
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_min = trees[0]; |
|
| 269 | 265 |
} |
| 270 |
|
|
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if ( 0==num_child ) {
|
|
| 266 |
else {
|
|
| 272 | 267 |
_min = _data[_min].child; |
| 273 | 268 |
} |
| 274 | 269 |
|
| 275 | 270 |
if (_min >= 0) _data[_min].left_child = false; |
| 276 |
|
|
| 277 | 271 |
--_num_items; |
| 278 | 272 |
} |
| 279 | 273 |
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