用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 i1tVdbC]
插入排序: (21']x
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package org.rut.util.algorithm.support; q"P5,:W
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import org.rut.util.algorithm.SortUtil; {(_B
/** H\ {E%7^h-
* @author treeroot fm[_@L%
x
* @since 2006-2-2 v/]Qq
* @version 1.0 lt&$8jh
*/ OTnu{<.a
public class InsertSort implements SortUtil.Sort{ %3ou^mcj
7s0)3HR}
/* (non-Javadoc) z7|
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |*Of^IkG0
*/ -mE
public void sort(int[] data) {
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int temp; ?e"Wu+q~L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bcUC4g\9N
} qPL^zM+
} r9+E'\
} H&~5sEGa
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} ROP C |
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冒泡排序: |= tJ|
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package org.rut.util.algorithm.support; UY1JB^J$
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import org.rut.util.algorithm.SortUtil; dMey/A/VYt
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/** aJEbAs}
* @author treeroot }Q47_]5
* @since 2006-2-2 e$ThSh\+(
* @version 1.0 tx2Vyu
*/ dDsjPM;2
public class BubbleSort implements SortUtil.Sort{ mrK,Ql
i_[^s:*T
/* (non-Javadoc) ?SB[lbU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SPfD2%jjC
*/ IOSuaLH^
public void sort(int[] data) { k&MlQ2'!<
int temp; ?BWHr(J
for(int i=0;i for(int j=data.length-1;j>i;j--){ M(_^'3u
if(data[j] SortUtil.swap(data,j,j-1); (45NZBs
} <QYCo1_
} FE0qw1{qQ
} gJ<@;O8zu0
} fBHkLRFH
= 4BLc
} sN6 0o 7.
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选择排序: 8#X?k/mzU
2$o2.$i81
package org.rut.util.algorithm.support; &>&dhdTQ
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import org.rut.util.algorithm.SortUtil; 8O"x;3I9
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/** f}L>&^I)
* @author treeroot u@GRN`yn
* @since 2006-2-2 nQ:ml
* @version 1.0 yq/[ /*7^
*/ NmH}"ndv+
public class SelectionSort implements SortUtil.Sort { 4]Un=?)I
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/* U@o2gjGN
* (non-Javadoc) K*([9VZ
* _7-"VoX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QVnO
*/ |#DC.Ga!
public void sort(int[] data) { b5iIV1g
int temp; G=r(SJq
for (int i = 0; i < data.length; i++) { Gk{
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int lowIndex = i; wc<2Uc
for (int j = data.length - 1; j > i; j--) { ]7#^])>
if (data[j] < data[lowIndex]) { LV}UBao5n
lowIndex = j; OhSt6&+
} X";QA":
} ^yn[QWFO
SortUtil.swap(data,i,lowIndex); 377j3dP
} \j,v/C@c-
} 0Zc*YdH
adRNrt*!
} z4%Z6Y
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Shell排序: k#8S`W8^
+XU$GSw3(
package org.rut.util.algorithm.support; M^|"be~{'
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import org.rut.util.algorithm.SortUtil; TS\A`{^T
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/** z/eU^2V
* @author treeroot Z-? Iip{
* @since 2006-2-2 SXHru Z
* @version 1.0 F8|5_214'
*/ 1+16i=BF)
public class ShellSort implements SortUtil.Sort{ N=O+X~
[[*0MA2Y
/* (non-Javadoc) buq *abON
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4%',scn
*/ ~xlMHf
public void sort(int[] data) { +LQs.*
for(int i=data.length/2;i>2;i/=2){ hr~qt~Oi
for(int j=0;j insertSort(data,j,i); !T#8N7J>
} /ygUd8@
} >,]
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insertSort(data,0,1); =0@d|LeZ
} eB(S+p?
@w#gRQCl
/** ijZydn
* @param data + e5
* @param j ]AFM Y<mB
* @param i u>3&.t@hU1
*/ Ru
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private void insertSort(int[] data, int start, int inc) { j(@g
int temp; H3/Y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HggR=>s
} gJcXdv=]2
} {E3<GeHw4
} {.' ,%)
07T;IV3#C5
} uDy>xJ|
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快速排序: m>Z\
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package org.rut.util.algorithm.support; =}%#$
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import org.rut.util.algorithm.SortUtil; ZVL-o<6
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/** xu_XX#9?b
* @author treeroot U'h[{ek
* @since 2006-2-2 )L(d$N=Bd
* @version 1.0 vs'L1$L'c
*/ 9GtVI^]
public class QuickSort implements SortUtil.Sort{ :C|>y4U&(s
g'}`FvADi
/* (non-Javadoc) u]]5p[|S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [)J49
*/ #g-*n@
1
public void sort(int[] data) { L?D~~Jb
quickSort(data,0,data.length-1); iZkW+5(
} ;)=zvr17
private void quickSort(int[] data,int i,int j){ |4p<T!T
int pivotIndex=(i+j)/2; )/+eLRN5G
file://swap @KXz4PU
SortUtil.swap(data,pivotIndex,j); 08K.\3
3@Zz-~4Td
int k=partition(data,i-1,j,data[j]); V'.eesN
SortUtil.swap(data,k,j); bWC~Hv
if((k-i)>1) quickSort(data,i,k-1); 1EAVMJ
if((j-k)>1) quickSort(data,k+1,j); jy__Y=1}
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} u\1Wkxj
/** PG v}fEH"
* @param data :)J~FVLy
* @param i }^GV(]K
* @param j $5Y^fwIK
* @return
f_5R!;
*/ hPqapz]HcP
private int partition(int[] data, int l, int r,int pivot) { z)<pqN
do{ 4|@FO}rK[l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0LHiOav
SortUtil.swap(data,l,r); RESGI}u
} "13
:VTs[5
while(l SortUtil.swap(data,l,r); s:jL/%+COZ
return l; ;FgEE%
} [Tb3z:UUvf
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} N5w]2xz!
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改进后的快速排序: jKCqH$
G|PIH#
package org.rut.util.algorithm.support; J,^pt Ql
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import org.rut.util.algorithm.SortUtil; dn)tP6qc/
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/** 4G;`KqR@
* @author treeroot dS;|Kl[Om
* @since 2006-2-2 c9g \7L,Z
* @version 1.0 MBYD,v&
*/ ">D(+ xr!)
public class ImprovedQuickSort implements SortUtil.Sort { |Qt`p@W
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private static int MAX_STACK_SIZE=4096; 1(;33),P8
private static int THRESHOLD=10; YI),q.3X~
/* (non-Javadoc) 9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %yuIXOJ
*/ W}e[.iX;
public void sort(int[] data) { c;~Llj
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int[] stack=new int[MAX_STACK_SIZE]; C O%O<_C
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int top=-1; Ppb2"I k
int pivot; /w xxcq
int pivotIndex,l,r; .IAHy)li"
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stack[++top]=0; IwgA A)H
stack[++top]=data.length-1; milK3+N
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while(top>0){ TaHi+
int j=stack[top--]; ,tR'0&=
int i=stack[top--]; 7jg(j~tQ
qf&a<[p~
pivotIndex=(i+j)/2; \q`+
pivot=data[pivotIndex]; ?xTeio44
>'1Q"$;
SortUtil.swap(data,pivotIndex,j); +!V%Q
DIu72\
file://partition gmAKW4(
l=i-1; DwrCysIK
r=j; 'a{5}8+8
do{ |xgCV@
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8^"|-~#<
SortUtil.swap(data,l,r); j&G~;(DY
} W4rw ;(\
while(l SortUtil.swap(data,l,r); NMY!-Kv 5
SortUtil.swap(data,l,j); \7tvNa,C
<$3nD b-
if((l-i)>THRESHOLD){ B?YfOSF=5
stack[++top]=i;
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stack[++top]=l-1; Pymh^i
} k#r7&Y
if((j-l)>THRESHOLD){ 1]3bx N
stack[++top]=l+1; {e
stack[++top]=j; +VW]%6+
} eWk2YP!
.Zt/e>K&
} 2u;fT{(
file://new InsertSort().sort(data); QEHZ=Yg%3
insertSort(data); :pjK\
} 8}0y)aJ
/** Z!i'Tbfn
* @param data __n"DLW
*/ .p0n\$r
private void insertSort(int[] data) { ,Y5 4(>>%
int temp; Z6AU%3]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,H(vD,54g
} +~k,4
} ]{U*+K%,J
} 6)<o O(
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} u]-El}*[
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归并排序: O
xaua
4wD^?S!p
package org.rut.util.algorithm.support; Q)X\VQcgj
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import org.rut.util.algorithm.SortUtil; 2}Plr{s9
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/** vCo}-b-j
* @author treeroot W" ,jZ"7
* @since 2006-2-2 >Ez}r(QQ^
* @version 1.0 daJ-H
*/ so&3A&4cL
public class MergeSort implements SortUtil.Sort{ (qONeLf%
os ud
/* (non-Javadoc) H.~+{jTr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kV%y%l(6
*/ ,^66`C[G
public void sort(int[] data) { ywtDz8!^u
int[] temp=new int[data.length]; +Ws}a
mergeSort(data,temp,0,data.length-1); EMH}VigR
} tl^;iE!-
9>, \QrrH
private void mergeSort(int[] data,int[] temp,int l,int r){ *<5lx[:4/x
int mid=(l+r)/2; iZ;jn8
if(l==r) return ; #{`NJ2DU]
mergeSort(data,temp,l,mid); {"(|oIo{
mergeSort(data,temp,mid+1,r); kZEy
for(int i=l;i<=r;i++){ uHh2>Px
temp=data; -xEg"dY/
} >Nqkz?67
int i1=l; ATewdq[C
int i2=mid+1; o|.me G
for(int cur=l;cur<=r;cur++){ b|'LtL$Y
if(i1==mid+1) *hgsS~
data[cur]=temp[i2++]; n{* [Y
else if(i2>r) )p](*Z^
data[cur]=temp[i1++]; OVK(:{PwS
else if(temp[i1] data[cur]=temp[i1++]; Y{{,62D
else ~a)20
data[cur]=temp[i2++]; U.)eJ1a
} u-cC}DP
} tXGcwoOB
2a}_|#*
} fP*C*4#X
KDzIarC
改进后的归并排序: 7cSvAX0Z.
0drc^rj
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package org.rut.util.algorithm.support; >CA1Ub&ls
9{&x-ugM
import org.rut.util.algorithm.SortUtil; 49>yIuG
Pl
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/** _+7f+eB
* @author treeroot 2)H|/
* @since 2006-2-2 ^U1+D^AJ
* @version 1.0 R|yTUGY
*/ \EqO;A%<
public class ImprovedMergeSort implements SortUtil.Sort { h<jIg$rA
ku=q:ryO
private static final int THRESHOLD = 10; zy5bDL -
}0*7bb
/* a#@opUn-
* (non-Javadoc) |LhuZ_;1xo
* $x<-PN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R'_[RHFC
*/ }zLE*b,
public void sort(int[] data) { z}|'&O*.F
int[] temp=new int[data.length]; }:Akpm
mergeSort(data,temp,0,data.length-1); z#ET-[I
} |MGw$
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private void mergeSort(int[] data, int[] temp, int l, int r) { .4-S|]/d,
int i, j, k; 4cL=f
int mid = (l + r) / 2; JaTW/~ TU
if (l == r) S|i
//I%_
return; JD.z}2+
if ((mid - l) >= THRESHOLD) kSrzIq<xre
mergeSort(data, temp, l, mid); QX/`s3N
else Y"U&3e,
insertSort(data, l, mid - l + 1); 3J{'|3x
if ((r - mid) > THRESHOLD) z5zm,Jw
mergeSort(data, temp, mid + 1, r); T!AQJ:;1
else A#{*A
insertSort(data, mid + 1, r - mid); o!N@W
L T!X|O.
for (i = l; i <= mid; i++) { p^3d1H3
temp = data; 5^i ^?
} P^r8JhDJ
for (j = 1; j <= r - mid; j++) { q1j[eru
temp[r - j + 1] = data[j + mid]; "5FeP;
} 37DvI&
int a = temp[l]; g.qp _O
int b = temp[r]; hHQt4 r'd
for (i = l, j = r, k = l; k <= r; k++) { #=c%:{O{4R
if (a < b) { \qPrY.-
data[k] = temp[i++]; \(s";@
a = temp; 3Hr%G4
} else { IbC)F> Dq
data[k] = temp[j--]; IB<ihk
b = temp[j]; g>{=R|uO5
} +-i@R%
} s4\2lBU?
} -u(#V#}OV?
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/** bT |FJ\aC
* @param data i+6/ g
* @param l USY^
[@o[f
* @param i iQQJ`
*/ q^)(p'
X
private void insertSort(int[] data, int start, int len) { %\u>%s<9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c_i;'
} _`_$UMK;
} od>.5{o
} XooAL0w
} z'o+3zq^
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堆排序: 6\L,L&
VEk|lX;2
package org.rut.util.algorithm.support; .)Q'j94Q
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import org.rut.util.algorithm.SortUtil; e~1??k.;=
psBBiHB[L
/** ~EymD *
* @author treeroot =6hf'lP
* @since 2006-2-2 ^B7Aam
* @version 1.0 )deuB5kz
*/ (uE_mEIsv
public class HeapSort implements SortUtil.Sort{ U8z,N1]r*`
0&)4^->c
/* (non-Javadoc) \_oHuw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YR>x h2< 9
*/ fQ@["b
public void sort(int[] data) { o5d)v)Rx=
MaxHeap h=new MaxHeap(); pE#0949
h.init(data); & |r)pl0$
for(int i=0;i h.remove(); ;NEHbLH#F
System.arraycopy(h.queue,1,data,0,data.length); ]`x~v4JU
} l?d*g&
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private static class MaxHeap{ gw-l]@;1
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void init(int[] data){ "&~Um U4CN
this.queue=new int[data.length+1]; wiZK-#\x
for(int i=0;i queue[++size]=data; 3i<*,@CY
fixUp(size); *Zln\Sx
} H"sey +-
} 6b0#z#E
#gP\q?5Ov
private int size=0; K(hf)1q
L))(g][;
private int[] queue; 59|Tmf(dS;
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public int get() { A-kI_&g\Og
return queue[1]; +Z+]Tqo
} 2X:n75()
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public void remove() { j`bOJTBE
SortUtil.swap(queue,1,size--); V@F~Cx
fixDown(1); n#iL[
&/Aw
} z`W$/tw"
file://fixdown ><Z2uJZ4x
private void fixDown(int k) { z>!b
int j; ?%?@?W>s@
while ((j = k << 1) <= size) { awUIYAgJ3
if (j < size %26amp;%26amp; queue[j] j++; DLVf7/=3~
if (queue[k]>queue[j]) file://不用交换 #qzozQ4
break; ^K8Ey#T
SortUtil.swap(queue,j,k); .- w*&Hd7b
k = j; e(b*T
} VrHFM(RNe
} Q%6*S!~
private void fixUp(int k) { 0YKG`W
while (k > 1) { F"_SCA?9?
int j = k >> 1; -YYQnN
if (queue[j]>queue[k]) z5?xmffB
break; U_+>4zdm
SortUtil.swap(queue,j,k); XWk^$ "
k = j; Xln'~5~)
} TB9ukLG^<<
} ;Q ]bV52
[/I4Pe1Yj%
} arnu|paw
3.Y/ZWON
} 0HE@L_$;2
3*ZE``
SortUtil: ZJS7#<-7o
s iC/k*
package org.rut.util.algorithm; #P1k5!u
SNcaIzbr
import org.rut.util.algorithm.support.BubbleSort; (sZB-
import org.rut.util.algorithm.support.HeapSort; 6B&':N98
import org.rut.util.algorithm.support.ImprovedMergeSort; GSsot%B u"
import org.rut.util.algorithm.support.ImprovedQuickSort; ~"8b\oLW
import org.rut.util.algorithm.support.InsertSort; i-$]Tg
import org.rut.util.algorithm.support.MergeSort; 60*=Bs%b
import org.rut.util.algorithm.support.QuickSort; l%U{Unwu
import org.rut.util.algorithm.support.SelectionSort; V5m4dQ>t
import org.rut.util.algorithm.support.ShellSort; U:p<pTnMR
(JOge~U
/** tONxV`
* @author treeroot v]BN. SHE_
* @since 2006-2-2 `uY77co6
* @version 1.0 (c_E*>c)
*/ !fY'^Ya?
public class SortUtil { :9.ik
public final static int INSERT = 1; t!v#rn[
public final static int BUBBLE = 2; )jvYJ9s
public final static int SELECTION = 3; *?cE]U6;
public final static int SHELL = 4; .:E%cL
+h
public final static int QUICK = 5; cl[rgj
public final static int IMPROVED_QUICK = 6; zl$'W=[rFs
public final static int MERGE = 7; c<|;<8ew
public final static int IMPROVED_MERGE = 8; oJEind>8O
public final static int HEAP = 9; {eL XVNR7R
46sV\In>?
public static void sort(int[] data) { aVEg%8
sort(data, IMPROVED_QUICK); ;BsyN[bF
} }Til $TT%H
private static String[] name={ x ^&D8&4^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UH2fP G
}; j8P=8w{
R!5j1hMN`
private static Sort[] impl=new Sort[]{ 6cDe_v|,
new InsertSort(), Z)?B5FF
new BubbleSort(), >yiK&LW^?
new SelectionSort(), :T.j;~
new ShellSort(), e2~&I`ct
new QuickSort(), N2WQrTA:S+
new ImprovedQuickSort(), "6o}g.
new MergeSort(), U,\3 !D0jt
new ImprovedMergeSort(), Q#i[Y?$L
new HeapSort() P`0}( '"U
}; @uXF(KDX
Yv\>\?865
public static String toString(int algorithm){ N$i!25F`
return name[algorithm-1]; yP.,Dh s
} !/2uO5
d?)k<!fJk
public static void sort(int[] data, int algorithm) { 8tJB/Pw`S
impl[algorithm-1].sort(data); 0CX2dk"UB^
} K 0R<a~
?hHVawt
public static interface Sort { {oOzXc6o
public void sort(int[] data); hV_bm@f/y
} 8R0Q -,'
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public static void swap(int[] data, int i, int j) { 0ZcvpR?G
int temp = data; [z=KHk
data = data[j]; sF[7pE
data[j] = temp; u 6A!Sw
} j\@Ht~G
} k/srT<