📄 详细解说 stl 排序(sort)_我的札记本.mht
字号:
=C8=AB=C5=C5=D0=F2</H4>=C8=AB=C5=C5=D0=F2=BC=B4=B0=D1=CB=F9=B8=F8=B6=A8=B7=
=B6=CE=A7=CB=F9=D3=D0=B5=C4=D4=AA=CB=D8=B0=B4=D5=D5=B4=F3=D0=A1=B9=D8=CF=B5=
=CB=B3=D0=F2=C5=C5=C1=D0=A1=A3=D3=C3=D3=DA=C8=AB=C5=C5=D0=F2=B5=C4=BA=AF=CA=
=FD=D3=D0=20
<P></P>
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px"><FONT color=3D#a52a2a>template</FONT> =
<<FONT color=3D#a52a2a>class</FONT> RandomAccessIterator>
<FONT color=3D#a52a2a>void</FONT> sort(RandomAccessIterator first, =
RandomAccessIterator last);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator, <FONT =
color=3D#a52a2a>class</FONT> StrictWeakOrdering>
<FONT color=3D#a52a2a>void</FONT> sort(RandomAccessIterator first, =
RandomAccessIterator last,
StrictWeakOrdering comp);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator>
<FONT color=3D#a52a2a>void</FONT> stable_sort(RandomAccessIterator =
first, RandomAccessIterator last);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator, <FONT =
color=3D#a52a2a>class</FONT> StrictWeakOrdering>
<FONT color=3D#a52a2a>void</FONT> stable_sort(RandomAccessIterator =
first, RandomAccessIterator last,=20
StrictWeakOrdering comp);</PRE>
</PRE></DIV></DIV>=D4=DA=B5=DA1=A3=AC3=D6=D6=D0=CE=CA=BD=D6=D0=A3=ACsort =
=BA=CD=20
=
stable_sort=B6=BC=C3=BB=D3=D0=D6=B8=B6=A8=B1=C8=BD=CF=BA=AF=CA=FD=A3=AC=CF=
=B5=CD=B3=BB=E1=C4=AC=C8=CF=CA=B9=D3=C3operator< =
=B6=D4=C7=F8=BC=E4[first,last)=C4=DA=B5=C4=CB=F9=D3=D0=D4=AA=CB=D8=BD=F8=D0=
=D0=C5=C5=D0=F2,=20
=
=D2=F2=B4=CB=A3=AC=C8=E7=B9=FB=C4=E3=CA=B9=D3=C3=B5=C4=C0=E0=D0=CD=D2=E5=BE=
=FC=D2=D1=BE=AD=D6=D8=D4=D8=C1=CBoperator<=BA=AF=CA=FD=A3=AC=C4=C7=C3=B4=
=C4=E3=BF=C9=D2=D4=CA=A1=D0=C4=C1=CB=A1=A3=B5=DA2,=20
=
4=D6=D6=D0=CE=CA=BD=A3=AC=C4=E3=BF=C9=D2=D4=CB=E6=D2=E2=D6=B8=B6=A8=B1=C8=
=BD=CF=BA=AF=CA=FD=A3=AC=D3=A6=D3=C3=B8=FC=CE=AA=C1=E9=BB=EE=D2=BB=D0=A9=A1=
=A3=C0=B4=BF=B4=BF=B4=CA=B5=BC=CA=D3=A6=D3=C3=A3=BA=20
=
<P>=B0=E0=C9=CF=D3=D010=B8=F6=D1=A7=C9=FA=A3=AC=CE=D2=CF=EB=D6=AA=B5=C0=CB=
=FB=C3=C7=B5=C4=B3=C9=BC=A8=C5=C5=C3=FB=A1=A3</P>
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px"><FONT color=3D#000080>#include</FONT> =
<iostream>
<FONT color=3D#000080>#include</FONT> <algorithm>
<FONT color=3D#000080>#include</FONT> <functional>
<FONT color=3D#000080>#include</FONT> <vector>
<FONT color=3D#000080>#include</FONT> <string>
<FONT color=3D#a52a2a>using</FONT> <FONT =
color=3D#a52a2a>namespace</FONT> std;
<FONT color=3D#a52a2a>class</FONT> student{
<FONT color=3D#a52a2a>public</FONT>:
student(<FONT color=3D#a52a2a>const</FONT> string &a, <FONT =
color=3D#a52a2a>int</FONT> b):name(a), score(b){}
string name;
<FONT color=3D#a52a2a>int</FONT> score;
<FONT color=3D#a52a2a>bool</FONT> <FONT =
color=3D#a52a2a>operator</FONT> < (<FONT color=3D#a52a2a>const</FONT> =
student &m)<FONT color=3D#a52a2a>const</FONT> {
<FONT color=3D#a52a2a>return</FONT> score< m.score;
}
};
<FONT color=3D#a52a2a>int</FONT> main() {
vector< student> vect;
student st1("<FONT color=3D#0000ff>Tom</FONT>", 74);
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Jimy</FONT>";
st1.score=3D56;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Mary</FONT>";
st1.score=3D92;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Jessy</FONT>";
st1.score=3D85;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Jone</FONT>";
st1.score=3D56;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Bush</FONT>";
st1.score=3D52;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Winter</FONT>";
st1.score=3D77;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Andyer</FONT>";
st1.score=3D63;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Lily</FONT>";
st1.score=3D76;
vect.push_back(st1);
st1.name=3D"<FONT color=3D#0000ff>Maryia</FONT>";
st1.score=3D89;
vect.push_back(st1);
cout<<"<FONT color=3D#0000ff>------before =
sort...</FONT>"<<endl;
<FONT color=3D#a52a2a>for</FONT>(<FONT =
color=3D#a52a2a>int</FONT> i =3D 0 ; i < vect.size(); i ++) =
cout<<vect[i].name<<"<FONT =
color=3D#0000ff>:\t</FONT>"<<vect[i].score<<endl;
stable_sort(vect.begin(), vect.end(),less<student>());
cout <<"<FONT color=3D#0000ff>-----after sort =
....</FONT>"<<endl;
<FONT color=3D#a52a2a>for</FONT>(<FONT =
color=3D#a52a2a>int</FONT> i =3D 0 ; i < vect.size(); i ++) =
cout<<vect[i].name<<"<FONT =
color=3D#0000ff>:\t</FONT>"<<vect[i].score<<endl;
<FONT color=3D#a52a2a>return</FONT> 0 ;
}</PRE>
</PRE></DIV></DIV>=C6=E4=CA=E4=B3=F6=CA=C7=A3=BA <PRE =
style=3D"PADDING-BOTTOM: 0px">------before sort...
Tom: 74
Jimy: 56
Mary: 92
Jessy: 85
Jone: 56
Bush: 52
Winter: 77
Andyer: 63
Lily: 76
Maryia: 89
-----after sort ....
Bush: 52
Jimy: 56
Jone: 56
Andyer: 63
Tom: 74
Lily: 76
Winter: 77
Jessy: 85
Maryia: 89
Mary: =
92</PRE>sort=B2=C9=D3=C3=B5=C4=CA=C7=B3=C9=CA=EC=B5=C4"=BF=EC=CB=D9=C5=C5=
=D0=F2=CB=E3=B7=A8"(=C4=BF=C7=B0=B4=F3=B2=BF=B7=D6STL=B0=E6=B1=BE=D2=D1=BE=
=AD=B2=BB=CA=C7=B2=C9=D3=C3=BC=F2=B5=A5=B5=C4=BF=EC=CB=D9=C5=C5=D0=F2=A3=AC=
=B6=F8=CA=C7=BD=E1=BA=CF=C4=DA=B2=E5=C5=C5=D0=F2=CB=E3=B7=A8)=A1=A3<A=20
class=3D"twikiCurrentTopicLink twikiAnchorLink"=20
=
href=3D"http://www.stlchina.org/twiki/bin/view.pl/Main/STLSortAlgorithms#=
MyNote1">=D7=A21</A>=A3=AC=BF=C9=D2=D4=B1=A3=D6=A4=BA=DC=BA=C3=B5=C4=C6=BD=
=BE=F9=D0=D4=C4=DC=A1=A2=B8=B4=D4=D3=B6=C8=CE=AAn*log(n)=A3=AC=D3=C9=D3=DA=
=B5=A5=B4=BF=B5=C4=BF=EC=CB=D9=C5=C5=D0=F2=D4=DA=C0=ED=C2=DB=C9=CF=D3=D0=D7=
=EE=B2=EE=B5=C4=C7=E9=BF=F6=A3=AC=D0=D4=C4=DC=BA=DC=B5=CD=A3=AC=C6=E4=CB=E3=
=B7=A8=B8=B4=D4=D3=B6=C8=CE=AAn*n=A3=AC=B5=AB=C4=BF=C7=B0=B4=F3=B2=BF=B7=D6=
=B5=C4STL=B0=E6=B1=BE=B6=BC=D2=D1=BE=AD=D4=DA=D5=E2=B7=BD=C3=E6=D7=F6=C1=CB=
=D3=C5=BB=AF=A3=AC=D2=F2=B4=CB=C4=E3=BF=C9=D2=D4=B7=C5=D0=C4=CA=B9=D3=C3=A1=
=A3stable_sort=B2=C9=D3=C3=B5=C4=CA=C7"=B9=E9=B2=A2=C5=C5=D0=F2"=A3=AC=B7=
=D6=C5=C9=D7=E3=B9=BB=C4=DA=B4=E6=CA=C7=A3=AC=C6=E4=CB=E3=B7=A8=B8=B4=D4=D3=
=B6=C8=CE=AAn*log(n),=20
=
=B7=F1=D4=F2=C6=E4=B8=B4=D4=D3=B6=C8=CE=AAn*log(n)*log(n)=A3=AC=C6=E4=D3=C5=
=B5=E3=CA=C7=BB=E1=B1=A3=B3=D6=CF=E0=B5=C8=D4=AA=CB=D8=D6=AE=BC=E4=B5=C4=CF=
=E0=B6=D4=CE=BB=D6=C3=D4=DA=C5=C5=D0=F2=C7=B0=BA=F3=B1=A3=B3=D6=D2=BB=D6=C2=
=A1=A3=20
<H4><A name=3D"1.5 =BE=D6=B2=BF=C5=C5=D0=F2"></A>1.5 =
=BE=D6=B2=BF=C5=C5=D0=F2</H4>=BE=D6=B2=BF=C5=C5=D0=F2=C6=E4=CA=B5=CA=C7=CE=
=AA=C1=CB=BC=F5=C9=D9=B2=BB=B1=D8=D2=AA=B5=C4=B2=D9=D7=F7=B6=F8=CC=E1=B9=A9=
=B5=C4=C5=C5=D0=F2=B7=BD=CA=BD=A1=A3=C6=E4=BA=AF=CA=FD=D4=AD=D0=CD=CE=AA=A3=
=BA=20
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px"><FONT color=3D#a52a2a>template</FONT> =
<<FONT color=3D#a52a2a>class</FONT> RandomAccessIterator>
<FONT color=3D#a52a2a>void</FONT> partial_sort(RandomAccessIterator =
first,=20
RandomAccessIterator middle,
RandomAccessIterator last);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator, <FONT =
color=3D#a52a2a>class</FONT> StrictWeakOrdering>
<FONT color=3D#a52a2a>void</FONT> partial_sort(RandomAccessIterator =
first,
RandomAccessIterator middle,
RandomAccessIterator last,=20
StrictWeakOrdering comp);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> InputIterator, <FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator>
RandomAccessIterator partial_sort_copy(InputIterator first, =
InputIterator last,
RandomAccessIterator result_first,
RandomAccessIterator result_last);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> InputIterator, <FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator,=20
<FONT color=3D#a52a2a>class</FONT> StrictWeakOrdering>
RandomAccessIterator partial_sort_copy(InputIterator first, =
InputIterator last,
RandomAccessIterator result_first,
RandomAccessIterator result_last, Compare comp);</PRE>
</PRE></DIV></DIV>=C0=ED=BD=E2=C1=CBsort =
=BA=CDstable_sort=BA=F3=A3=AC=D4=D9=C0=B4=C0=ED=BD=E2partial_sort =
=BE=CD=B1=C8=BD=CF=C8=DD=D2=D7=C1=CB=A1=A3=CF=C8=BF=B4=BF=B4=C6=E4=D3=C3=CD=
=BE:=20
=
=B0=E0=C9=CF=D3=D010=B8=F6=D1=A7=C9=FA=A3=AC=CE=D2=CF=EB=D6=AA=B5=C0=B7=D6=
=CA=FD=D7=EE=B5=CD=B5=C45=C3=FB=CA=C7=C4=C4=D0=A9=C8=CB=A1=A3=C8=E7=B9=FB=
=C3=BB=D3=D0partial_sort=A3=AC=C4=E3=BE=CD=D0=E8=D2=AA=D3=C3sort=B0=D1=CB=
=F9=D3=D0=C8=CB=C5=C5=BA=C3=D0=F2=A3=AC=C8=BB=BA=F3=D4=D9=C8=A1=C7=B05=B8=
=F6=A1=A3=CF=D6=D4=DA=C4=E3=D6=BB=D0=E8=D2=AA=B6=D4=B7=D6=CA=FD=D7=EE=B5=CD=
5=C3=FB=C5=C5=D0=F2=A3=AC=B0=D1=C9=CF=C3=E6=B5=C4=B3=CC=D0=F2=D7=F6=C8=E7=
=CF=C2=D0=DE=B8=C4=A3=BA=20
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px">stable_sort(vect.begin(), =
vect.end(),less<student>());
=CC=E6=BB=BB=CE=AA=A3=BA
partial_sort(vect.begin(), vect.begin()+5, =
vect.end(),less<student>());</PRE>
</PRE></DIV></DIV>=CA=E4=B3=F6=BD=E1=B9=FB=CE=AA=A3=BA <PRE =
style=3D"PADDING-BOTTOM: 0px">------before sort...
Tom: 74
Jimy: 56
Mary: 92
Jessy: 85
Jone: 56
Bush: 52
Winter: 77
Andyer: 63
Lily: 76
Maryia: 89
-----after sort ....
Bush: 52
Jimy: 56
Jone: 56
Andyer: 63
Tom: 74
Mary: 92
Jessy: 85
Winter: 77
Lily: 76
Maryia: =
89</PRE>=D5=E2=D1=F9=B5=C4=BA=C3=B4=A6=D6=AA=B5=C0=C1=CB=C2=F0=A3=BF=B5=B1=
=CA=FD=BE=DD=C1=BF=D0=A1=B5=C4=CA=B1=BA=F2=BF=C9=C4=DC=BF=B4=B2=BB=B3=F6=D3=
=C5=CA=C6=A3=AC=C8=E7=B9=FB=CA=C7100=CD=F2=D1=A7=C9=FA=A3=AC=CE=D2=CF=EB=D5=
=D2=B7=D6=CA=FD=D7=EE=C9=D9=B5=C45=B8=F6=C8=CB......=20
=
<P>partial_sort=B2=C9=D3=C3=B5=C4=B6=D1=C5=C5=D0=F2=A3=A8heapsort=A3=A9=A3=
=AC=CB=FC=D4=DA=C8=CE=BA=CE=C7=E9=BF=F6=CF=C2=B5=C4=B8=B4=D4=D3=B6=C8=B6=BC=
=CA=C7n*log(n).=20
=
=C8=E7=B9=FB=C4=E3=CF=A3=CD=FB=D3=C3partial_sort=C0=B4=CA=B5=CF=D6=C8=AB=C5=
=C5=D0=F2=A3=AC=C4=E3=D6=BB=D2=AA=C8=C3middle=3Dlast=BE=CD=BF=C9=D2=D4=C1=
=CB=A1=A3</P>
=
<P>partial_sort_copy=C6=E4=CA=B5=CA=C7copy=BA=CDpartial_sort=B5=C4=D7=E9=BA=
=CF=A1=A3=B1=BB=C5=C5=D0=F2(=B1=BB=B8=B4=D6=C6)=B5=C4=CA=FD=C1=BF=CA=C7[f=
irst,=20
last)=BA=CD[result_first, =
result_last)=D6=D0=C7=F8=BC=E4=BD=CF=D0=A1=B5=C4=C4=C7=B8=F6=A1=A3=C8=E7=B9=
=FB[result_first,=20
result_last)=C7=F8=BC=E4=B4=F3=D3=DA[first, =
last)=C7=F8=BC=E4=A3=AC=C4=C7=C3=B4partial_sort=CF=E0=B5=B1=D3=DAcopy=BA=CD=
sort=B5=C4=D7=E9=BA=CF=A1=A3</P>
<H4><A name=3D"1.6 nth_element =
=D6=B8=B6=A8=D4=AA=CB=D8=C5=C5=D0=F2"></A>1.6 nth_element=20
=
=D6=B8=B6=A8=D4=AA=CB=D8=C5=C5=D0=F2</H4>nth_element=D2=BB=B8=F6=C8=DD=D2=
=D7=BF=B4=B6=AE=B5=AB=BD=E2=CA=CD=B1=C8=BD=CF=C2=E9=B7=B3=B5=C4=C5=C5=D0=F2=
=A1=A3=D3=C3=C0=FD=D7=D3=CB=B5=BB=E1=B8=FC=B7=BD=B1=E3=A3=BA<BR>=B0=E0=C9=
=CF=D3=D010=B8=F6=D1=A7=C9=FA=A3=AC=CE=D2=CF=EB=D6=AA=B5=C0=B7=D6=CA=FD=C5=
=C5=D4=DA=B5=B9=CA=FD=B5=DA4=C3=FB=B5=C4=D1=A7=C9=FA=A1=A3<BR>=C8=E7=B9=FB=
=D2=AA=C2=FA=D7=E3=C9=CF=CA=F6=D0=E8=C7=F3=A3=AC=BF=C9=D2=D4=D3=C3sort=C5=
=C5=BA=C3=D0=F2=A3=AC=C8=BB=BA=F3=C8=A1=B5=DA4=CE=BB=A3=A8=D2=F2=CE=AA=CA=
=C7=D3=C9=D0=A1=B5=BD=B4=F3=C5=C5),=20
=B8=FC=B4=CF=C3=F7=B5=C4=C5=F3=D3=D1=BB=E1=D3=C3partial_sort,=20
=
=D6=BB=C5=C5=C7=B04=CE=BB=A3=AC=C8=BB=BA=F3=B5=C3=B5=BD=B5=DA4=CE=BB=A1=A3=
=C6=E4=CA=B5=D5=E2=CA=C7=C4=E3=BB=B9=CA=C7=C0=CB=B7=D1=A3=AC=D2=F2=CE=AA=C7=
=B0=C1=BD=CE=BB=C4=E3=B8=F9=B1=BE=C3=BB=D3=D0=B1=D8=D2=AA=C5=C5=D0=F2=A3=AC=
=B4=CB=CA=B1=A3=AC=C4=E3=BE=CD=D0=E8=D2=AAnth_element:=20
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px"><FONT color=3D#a52a2a>template</FONT> =
<<FONT color=3D#a52a2a>class</FONT> RandomAccessIterator>
<FONT color=3D#a52a2a>void</FONT> nth_element(RandomAccessIterator =
first, RandomAccessIterator nth,
RandomAccessIterator last);
<FONT color=3D#a52a2a>template</FONT> <<FONT =
color=3D#a52a2a>class</FONT> RandomAccessIterator, <FONT =
color=3D#a52a2a>class</FONT> StrictWeakOrdering>
<FONT color=3D#a52a2a>void</FONT> nth_element(RandomAccessIterator =
first, RandomAccessIterator nth,
RandomAccessIterator last, StrictWeakOrdering comp);</PRE>
</PRE></DIV></DIV>=B6=D4=D3=DA=C9=CF=CA=F6=CA=B5=C0=FD=D0=E8=C7=F3=A3=AC=C4=
=E3=D6=BB=D0=E8=D2=AA=B0=B4=CF=C2=C3=E6=D2=AA=C7=F3=D0=DE=B8=C41.4=D6=D0=B5=
=C4=B3=CC=D0=F2=A3=BA=20
<DIV class=3DBeautifierPlugin>
<DIV class=3Dfragment><PRE style=3D"PADDING-BOTTOM: 0px"><PRE =
style=3D"PADDING-BOTTOM: 0px">stable_sort(vect.begin(), =
vect.end(),less<student>());
=CC=E6=BB=BB=CE=AA=A3=BA
nth_element(vect.begin(), vect.begin()+3, =
vect.end(),less<student>());</PRE>
</PRE></DIV></DIV>=D4=CB=D0=D0=BD=E1=B9=FB=CE=AA=A3=BA <PRE =
style=3D"PADDING-BOTTOM: 0px">------before sort...
Tom: 74
Jimy: 56
Mary: 92
Jessy: 85
Jone: 56
Bush: 52
Winter: 77
Andyer: 63
Lily: 76
Maryia: 89
-----after sort ....
Jone: 56
Bush: 52
Jimy: 56
Andyer: 63
Jessy: 85
Mary: 92
Winter: 77
Tom: 74
Lily: 76
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