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。 $xPaYf
插入排序: 'Wmx)0)
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package org.rut.util.algorithm.support; 5Ou`z5S\k
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import org.rut.util.algorithm.SortUtil; RO'7\xvn
/** 8~@c)Z;
* @author treeroot Na]:_K5Dp
* @since 2006-2-2 Yp^rR }N
* @version 1.0 +[\FD; >
*/ a6) BqlJ
public class InsertSort implements SortUtil.Sort{ ]1#e#M]#
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/* (non-Javadoc) ~E2KZm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7%x[q}
*/ o <pf#tifv
public void sort(int[] data) { :&V h?
int temp; ?kbiMs1;u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c7x~{V8
} 4R1<nZ"e~
} vunHNHltW0
} jtW!"TOY
S.-TOE
} wsI`fO^A8
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冒泡排序: w"-Lc4t+
Bg x'9p/
package org.rut.util.algorithm.support; \Je0CD=e`
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import org.rut.util.algorithm.SortUtil; Krqtf
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/** QI'Oz{vE
* @author treeroot Vt:~q{9*k
* @since 2006-2-2 iTgt}]L
* @version 1.0 su{poQ}K
*/ P3+5?.p.
public class BubbleSort implements SortUtil.Sort{ d928~y
W
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/* (non-Javadoc) "n(hfz0y%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) < $lCkSx<Q
*/ YNKHN2E8
public void sort(int[] data) { chM%]|gey
int temp; &^}1O:8e
for(int i=0;i for(int j=data.length-1;j>i;j--){ a|t$l=|DD
if(data[j] SortUtil.swap(data,j,j-1); XDOY`N^L
} 1ySk;;3
} 'YmIKIw
} w0rRSD4S8B
} f
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V5V
bJBpf
} /Kql>$I
4xjP iHd<
选择排序: h-q3U%R4}@
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package org.rut.util.algorithm.support; %[Wh [zZy
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import org.rut.util.algorithm.SortUtil; J\twZ>w~0
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/** '3/4?wi
* @author treeroot vdivq^%=a
* @since 2006-2-2 "l3_=Gua
* @version 1.0 H1|?t+oP
*/ N{9v1`B
public class SelectionSort implements SortUtil.Sort { gc_:%ki
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/* [B\h$IcRv
* (non-Javadoc) xHvZV<#
* B+P(M!m3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4gI/!,J(b
*/ 4;e5H_}Oo
public void sort(int[] data) { p& y<I6a,
int temp; AYqX|
for (int i = 0; i < data.length; i++) { N.,X<G.H
int lowIndex = i; `i3NG1
v0
for (int j = data.length - 1; j > i; j--) { q9KHmhUD
if (data[j] < data[lowIndex]) { I| w"/"U
lowIndex = j; dk[!V1x4\
} Yb|c\[ %
} :%tU'w
SortUtil.swap(data,i,lowIndex); #xsE3Wj-X
} aL+
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} 3oF45`3FV
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}
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Shell排序: S'Q@ScJ
eBZXI)pPh
package org.rut.util.algorithm.support; b[r8e
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import org.rut.util.algorithm.SortUtil; DU0zez I9
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/** "h{q#~s
* @author treeroot kj#?whK6~
* @since 2006-2-2 .F4>p=r
* @version 1.0 GFj{K
*/ cM(:xv
public class ShellSort implements SortUtil.Sort{ OcR$zlgs[v
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/* (non-Javadoc) [\^n=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x[FJgI'r
*/ lHN5Dr
public void sort(int[] data) { c,np2myd
for(int i=data.length/2;i>2;i/=2){ u@Ih GME
for(int j=0;j insertSort(data,j,i); :KQ~Cb
} Y071Y:
} ~^NtO
insertSort(data,0,1); }MJy
+Z8&
} w$3,A$8
py$Q
/** z`.<U{5
* @param data }*M6x;t
* @param j $t$ShT)
* @param i y;35WtDVb
*/ .[]r}[ lU
private void insertSort(int[] data, int start, int inc) { X&tF;<m^
int temp; Z;ht
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q- cFtu-w
} ((YMVe
} wL+s8#{
} :}He\V
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} +SP{hHa^
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快速排序: ]J1dt N=
VQc_|z_s
package org.rut.util.algorithm.support; \\iQEy<i
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import org.rut.util.algorithm.SortUtil; ]~Rho_mq#
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/** k0OYJ/
* @author treeroot Y+kfBvxyf
* @since 2006-2-2 -$pzl,^ h
* @version 1.0 L O}@dL
*/ rMdt:`
public class QuickSort implements SortUtil.Sort{ ?h$NAL?
kjTduZ/3"
/* (non-Javadoc) {DV_*5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UFXaEl}R
*/ B{QBzx1L9c
public void sort(int[] data) { %6|nb:Oa
quickSort(data,0,data.length-1); 5MroNr
} TJ10s%,V
private void quickSort(int[] data,int i,int j){ 8H%;WU9-
int pivotIndex=(i+j)/2; EEEh~6?-e
file://swap =2`[&
SortUtil.swap(data,pivotIndex,j); Kr?TxhUHd
5#HW2"7
int k=partition(data,i-1,j,data[j]); iowTLq!?
SortUtil.swap(data,k,j); 4GkWRu1
if((k-i)>1) quickSort(data,i,k-1); C'>|J9~Gz
if((j-k)>1) quickSort(data,k+1,j); ()Y~Q(5ji
z 9vInf@M
} vk}n,ecl
/** X:A^<L
~
* @param data 2]z8:a
* @param i ~uj#4>3T
* @param j $iN"9N%l
* @return ]Z>}6!
*/ Yk'XGr)
private int partition(int[] data, int l, int r,int pivot) { /MIe(,>Uh
do{ b:U$x20n$
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g{7.r-uu
SortUtil.swap(data,l,r); :N:yLd} &
} _('=b/
while(l SortUtil.swap(data,l,r); qEyyT[:
return l; Z_LFIz*c
} 'f#{{KA
PIJr{6B/PA
} V><,UI=,n
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改进后的快速排序: 4)S,3G
e6`Jbu+J<f
package org.rut.util.algorithm.support; jte.Xy~g
us1Hu)
import org.rut.util.algorithm.SortUtil; NG=@ -eu
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/** R
* @author treeroot JYMiLph<
* @since 2006-2-2 I5X|(0es
* @version 1.0 ny]?I
*/ RF`.xQ26=
public class ImprovedQuickSort implements SortUtil.Sort { OTvPU kp*
(9tX5$e6N
private static int MAX_STACK_SIZE=4096; EGGWrl}1
private static int THRESHOLD=10; ~IY%
/* (non-Javadoc) .8 2P(}h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XD!W: uvb
*/ l3{-z4mw
public void sort(int[] data) { ?U%qPv:
int[] stack=new int[MAX_STACK_SIZE]; >1.X*gi?-
8Q.T g.
int top=-1; ])[[ V!1
int pivot; OyStq i
int pivotIndex,l,r; ;(b9#b.
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stack[++top]=0; Mc?Qx
stack[++top]=data.length-1; ^a/gBC82x
J-[,KME_^
while(top>0){ l?E{YQq]
int j=stack[top--]; ]V[q(-Jk
int i=stack[top--]; o$wEEz*4
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pivotIndex=(i+j)/2; =%BSKSG.
pivot=data[pivotIndex]; C1V|0hu
6`&a&%,O
SortUtil.swap(data,pivotIndex,j); fnpYT:%fG
Y@NNrGDkT*
file://partition `jDTzhO~
l=i-1; 5^}\4.eXo
r=j; %p Ynnfr
do{ SU MrFd~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MOQ6:
SortUtil.swap(data,l,r); |-b#9JQ[A
} *2ZjE!A
while(l SortUtil.swap(data,l,r); N&.H|5
SortUtil.swap(data,l,j); 9#23FK
Yc`o5Q\>
if((l-i)>THRESHOLD){ dhC$W!N7!
stack[++top]=i; +xRK5+}9
stack[++top]=l-1; L\37xJo
} TeMHm?1^
if((j-l)>THRESHOLD){ b}2ED9HG\
stack[++top]=l+1; HNb/-e ,"
stack[++top]=j; S%$ }(
} JL`-0P<M
z$&{:\hj
} ~jWn4
\
file://new InsertSort().sort(data); @CNi{. RX
insertSort(data); \J4L:.`qS
} l?\jB\,
/** pg6cF
* @param data Z@yW bjE7Z
*/ 3>3 Kwc~E
private void insertSort(int[] data) { 9G9t" {
int temp; UgRhWV~f0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} ww)<E`eGi
} -r!. 9q
} dydc}n
"0$a)4]
} FK^p")i
3(``#7
归并排序: ?'IP4z;y
M5i%jZk
package org.rut.util.algorithm.support; @hl.lq
jxP;>K7O
import org.rut.util.algorithm.SortUtil; fPU`/6
k}S :RK
/** _;W.q7b]
* @author treeroot {k(g]#pP
* @since 2006-2-2 @g|v;B|{
* @version 1.0 E}%B;"b/Tj
*/ w3N[9w?1
public class MergeSort implements SortUtil.Sort{ t Cw<Ip
%3s1z<;R[S
/* (non-Javadoc) *}Xf!"I#]N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Oy%a'w
*/ f<-Jg
public void sort(int[] data) { pLl(iNf]
int[] temp=new int[data.length]; s'3
s^Dd
mergeSort(data,temp,0,data.length-1); [RS|gem`
} oph}5Krd)
;^+\K-O]c
private void mergeSort(int[] data,int[] temp,int l,int r){ .7^c@i[
int mid=(l+r)/2; .4S.>~^7
if(l==r) return ; ]z;P9B3@&
mergeSort(data,temp,l,mid); 6S},(=
mergeSort(data,temp,mid+1,r); sZ'nYo
for(int i=l;i<=r;i++){ *=) cQeJ
temp=data; E!;SL|lj.
} XYQ/^SI!:
int i1=l; wDw[RW3
int i2=mid+1; N[?N5~jG
for(int cur=l;cur<=r;cur++){ OwuE~K7b{
if(i1==mid+1) aasoW\UG
data[cur]=temp[i2++]; 5b5x!do
else if(i2>r) c7 ?_46J
data[cur]=temp[i1++]; -Mip,EO
else if(temp[i1] data[cur]=temp[i1++]; P=qa::A
else >3ZFzh&OYQ
data[cur]=temp[i2++]; f}6s
Q5
} rDl*d`He!
} qjwxhabc
/{Is0+)
} ag;Q F
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改进后的归并排序: Y&`=jDI
W'els)WJ|x
package org.rut.util.algorithm.support; hC:n5]K
JR'
import org.rut.util.algorithm.SortUtil; vp1941P
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/** 8."]//V
* @author treeroot xP_cQwm`1
* @since 2006-2-2 a@8v^G
* @version 1.0 `Nv=B1
*/ [<7@{;r
public class ImprovedMergeSort implements SortUtil.Sort { %W'v}p
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private static final int THRESHOLD = 10; $': E\*ICb
ycc4W*]
/* %) /s; Q,
* (non-Javadoc) t9nqu!);
* [v7F1@6b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wrviR
*/ DP[IZC
public void sort(int[] data) { s:?SF.
int[] temp=new int[data.length]; R$v[!A+:'
mergeSort(data,temp,0,data.length-1); XND|h#i8
} PvzcEV
fJ5iS
private void mergeSort(int[] data, int[] temp, int l, int r) { i3dkYevs?
int i, j, k; <qtr
int mid = (l + r) / 2; Wfu(*
if (l == r) Amp#GR1CA
return; y?rPlA_
if ((mid - l) >= THRESHOLD) e%@'5k\SK
mergeSort(data, temp, l, mid); 0\H\lKcK
else |<HPn4
,X
insertSort(data, l, mid - l + 1); wYdb*"R
if ((r - mid) > THRESHOLD) QFE:tBHe
mergeSort(data, temp, mid + 1, r); kh!FR u h
else vhe>)h*B
insertSort(data, mid + 1, r - mid); 7z/|\D_{
w+C7BPV&
for (i = l; i <= mid; i++) { t\?ik6
temp = data; mGtdO/C#B
} FFl!\y*0z
for (j = 1; j <= r - mid; j++) { NYt&@Z}]
temp[r - j + 1] = data[j + mid]; s0\X ^
} ? 8)'oMD
int a = temp[l]; `V=N*hv`
int b = temp[r]; G"klu
for (i = l, j = r, k = l; k <= r; k++) { 6q*9[<8
if (a < b) { ;i8g41qjF
data[k] = temp[i++]; . kQkC:~9
a = temp; M*y)6H k~
} else { ^({})T0wu
data[k] = temp[j--]; %u? >#
b = temp[j]; 3e
#p@sB
} =w;F<M|Y
} NYyh|X:m
} gRrL[z
|^0XYBxQ
/** T,7Y7c/3V
* @param data _7<FOOM%8y
* @param l J{'>uD.@
* @param i .nB0 h
*/ 83E7k]7]
private void insertSort(int[] data, int start, int len) { uya.sF0]9B
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;l4[%xld
} #G.ulX
} _|iSF2f,X
} KmMzH`t}`
} 1=t>HQ
6{x(.=
堆排序: ,kF1T,
C.~,qmOP
package org.rut.util.algorithm.support; rk&IlAE
N6>(;ugJ1-
import org.rut.util.algorithm.SortUtil; "*($cQ$v
)n+Lo&C<
/** +lm{Olm'^
* @author treeroot 4F)-"ck
* @since 2006-2-2 .)RzT9sg
* @version 1.0 Mc=$/ o
*/ OJ,`
public class HeapSort implements SortUtil.Sort{ uPhK3nCGo
t,,k
/* (non-Javadoc) YHkn2]^#A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !i{aMxUP
*/ OPwtV9%
public void sort(int[] data) { (^s>m,h
MaxHeap h=new MaxHeap(); O9vQp
h.init(data); 5pj22 s
for(int i=0;i h.remove(); E'G4Y-
System.arraycopy(h.queue,1,data,0,data.length); N8k00*p65
} 6 2'j!"xv
S)lkz'tdk
private static class MaxHeap{ #EO9UW5
A$<.a'&T!
void init(int[] data){ @AGn{q
this.queue=new int[data.length+1]; X59:C3c
for(int i=0;i queue[++size]=data; 0":ib0=
fixUp(size); T29Dt
} Xp >7iX!:
} u&`XB|~
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private int size=0; <<@bl@9'
5Eg1Q
YVt
private int[] queue; o4j[p3$
cimp/n"
public int get() { %{ABaeb]
return queue[1]; *194{ ep
} jNTjSX
/~}}"zx&
public void remove() { iEd\6EZ
SortUtil.swap(queue,1,size--); 1HXjN~XF
fixDown(1); DAS/43\
} p=;=w_^y
file://fixdown aIJt0;
private void fixDown(int k) { ~5_Ad\n9
int j; pv*,gSS
while ((j = k << 1) <= size) { 18~>ZR
if (j < size %26amp;%26amp; queue[j] j++; (}a8"]Z
if (queue[k]>queue[j]) file://不用交换 9bP^`\K[N
break; q-.,nMUF
SortUtil.swap(queue,j,k); gGr^@=;YC
k = j; |k+8<\
} ?,p;O
} +,2:g}5
private void fixUp(int k) { )T';qm0w
while (k > 1) { RMK"o?
int j = k >> 1; eb.O#Y
if (queue[j]>queue[k]) vk+VP 1D
break; |rJ=Ksc
SortUtil.swap(queue,j,k); t0o`-d(
k = j; =o
Xsb
} Du`JaJI
} Q o?O:
6qRx0"qB
} `4(e
# ,7e
NM"
} d`P7}*;`
>ZPsjQuf"
SortUtil: PUF/#ck
bvS(@
package org.rut.util.algorithm; afv~r>q(-
0ZBJ~W
import org.rut.util.algorithm.support.BubbleSort; M:-.o
import org.rut.util.algorithm.support.HeapSort; |zR8rqBX;
import org.rut.util.algorithm.support.ImprovedMergeSort; @W vatD
V
import org.rut.util.algorithm.support.ImprovedQuickSort; >=RmGS
import org.rut.util.algorithm.support.InsertSort; gg[WlRQK4A
import org.rut.util.algorithm.support.MergeSort; p<zSJLN
import org.rut.util.algorithm.support.QuickSort; 1nQWW9i
import org.rut.util.algorithm.support.SelectionSort; \Kl+ 5%L
import org.rut.util.algorithm.support.ShellSort; %ZNI:Uh
z54EG:x.7^
/** 2@9Tfm(=
* @author treeroot ^.#jF#u~
* @since 2006-2-2 J/\V%~
1F
* @version 1.0 JQ,1D`?.a
*/ nN*w~f"
public class SortUtil { {k>Ca
public final static int INSERT = 1; PE~G=1x3
public final static int BUBBLE = 2; p89wNSMl[
public final static int SELECTION = 3; m1),;RsH
public final static int SHELL = 4; $UgA0]qn
public final static int QUICK = 5; <%maDM^_\(
public final static int IMPROVED_QUICK = 6; 1abtgDL
public final static int MERGE = 7; fJ/e(t
public final static int IMPROVED_MERGE = 8; ~MS\
public final static int HEAP = 9; .#1~Rz1r
jqv- D
public static void sort(int[] data) { Tsgk/e9K2?
sort(data, IMPROVED_QUICK); b
/@#}Gc
} ^~G8?]w
private static String[] name={ ^SxY IFL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" MP_'D+LS
}; U4gF(Q
'@p['#\uI
private static Sort[] impl=new Sort[]{ v'VD0+3[H
new InsertSort(), &z>e5_.
new BubbleSort(), 6xWe=QGE
new SelectionSort(), ANJ$'3tg
new ShellSort(), :Qumb
new QuickSort(), >iD )eB
new ImprovedQuickSort(), pV20oSJNt
new MergeSort(), T'4z=Z]w
new ImprovedMergeSort(), zY,r9<I8_x
new HeapSort() ;k7xMZs
}; L1ieaKw
^zt-HDBR_
public static String toString(int algorithm){ {.QEc0-
return name[algorithm-1]; @$LWWTr;
} 5D_fXfx_|
Sg6"WV{<
public static void sort(int[] data, int algorithm) { V#cqRE3XNi
impl[algorithm-1].sort(data); x/;bu W-
} ]T;EdK-
{)
Q@c)'
public static interface Sort { JS*m65e
public void sort(int[] data); um4yF*3b9
} 4d8B`Fa9
t*>R`,j
public static void swap(int[] data, int i, int j) { enp)-nS0
int temp = data; } w
5l
data = data[j]; ?RK]FP"A
data[j] = temp; HRiL.DS
} H2um|6>
} 7Garnd b