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。 )e|=mtp
插入排序: c; 2#,m^
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package org.rut.util.algorithm.support; he(A3{'
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import org.rut.util.algorithm.SortUtil;
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{
/** $za8"T*I
* @author treeroot -n 80&
* @since 2006-2-2 m908jI_So
* @version 1.0 r!PpUwod
*/ ^T::-pN*
public class InsertSort implements SortUtil.Sort{ iBTYY{-wF
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/* (non-Javadoc) t. ='/`!N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) **3 z;58i
*/ 9iUr nG*
public void sort(int[] data) { vw,rF`LjZ
int temp; p Z: F:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TS2ZF{m
} @Fp_^5
} EJ@p-}I!
} G` XC
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} phnV7D(E
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冒泡排序: aFz5leD
G s+3e8
package org.rut.util.algorithm.support; Eow_WW;P
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import org.rut.util.algorithm.SortUtil; L|P5=/d
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/** aE;le{|!({
* @author treeroot scLn=
* @since 2006-2-2 fk1ASV<rN
* @version 1.0 ojvj}ln
*/ li~d?>
public class BubbleSort implements SortUtil.Sort{ /DQaGq/Ld
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/* (non-Javadoc) +LM#n#T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hd),&qoW?
*/ u!"t!2I
public void sort(int[] data) { _8Kx6s%
int temp; AP77a*@8
for(int i=0;i for(int j=data.length-1;j>i;j--){ {M-YHX>*;g
if(data[j] SortUtil.swap(data,j,j-1); <Ln1pV~k
} S}p4iE"n
} s<qe,'Y
} P9g en6
} V=:'SL*3|
i;LXu%3\
} z 9FfU
35E _W>n
选择排序: :8CvRO*<
1$M@]7e+!+
package org.rut.util.algorithm.support; 79`AM
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import org.rut.util.algorithm.SortUtil; t2,A@2DU2
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/** ):i&`}SY
* @author treeroot CC#;c1t
* @since 2006-2-2 BZzrRC
* @version 1.0 ~HOy:1QhE=
*/ oE#d,Z
public class SelectionSort implements SortUtil.Sort { GrUCZ<S
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/* 9E>xIJ@J2T
* (non-Javadoc) ='`/BY(m[
* O8B\{T1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X!e[GJ
*/ $5Xh,DOg
public void sort(int[] data) { 6d_'4B
int temp; yzqVz_Fi*W
for (int i = 0; i < data.length; i++) { s2Mb[#:a"
int lowIndex = i; {
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for (int j = data.length - 1; j > i; j--) { q
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if (data[j] < data[lowIndex]) { ?>I;34tL(
lowIndex = j; ^h69Kr#d4
} 0NS<?p~_S
} j#cYS*^H
SortUtil.swap(data,i,lowIndex); N[s}qmPha
} -$\+'
\
} $0vb^
6
J{k(H$3
} ^J$2?!~
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Shell排序: spt6]"Ni
KXx32 b,~
package org.rut.util.algorithm.support; e" St_z(
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import org.rut.util.algorithm.SortUtil; 5H*\t 7
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/** Z'"tB/=W
* @author treeroot ILGMMA_2
* @since 2006-2-2 L*YynF
* @version 1.0 a!=D [Gz*5
*/ BO;6
u^[
public class ShellSort implements SortUtil.Sort{ ;7}VBkH
r"P|dlV-
/* (non-Javadoc) KET2Ws[w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r>o63Q:
*/ 0*f)=Q'
public void sort(int[] data) { $<}$DH_Y
for(int i=data.length/2;i>2;i/=2){ '.:z&gSqx0
for(int j=0;j insertSort(data,j,i); `{dm;j5/y
} &J+CSv,39
} wne,e's}
insertSort(data,0,1); LDPUD'
} "N`[r iq{
kqFP)!37
/** '<"s \,
* @param data @7IIM{
* @param j f&Gt|
* @param i }H^+A77v
*/ KV(Q;~8"X
private void insertSort(int[] data, int start, int inc) { >CHrg]9
int temp; bbE!qk;hEP
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?l9XAWt\
} D]zwl@sRX:
} PGqQ@6B
} Gefne[
5>[u `
} Z&1\{PG3*
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快速排序: .+$Q<L
<3LbNFP
package org.rut.util.algorithm.support; 3 2&;`]C
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import org.rut.util.algorithm.SortUtil; .(K)?r-g5
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/** Y3Yz)T}UkS
* @author treeroot EV]1ml k$
* @since 2006-2-2 T;r2.Pupn
* @version 1.0 V<GHpFi0
*/ X
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public class QuickSort implements SortUtil.Sort{ IxY|>5z
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/* (non-Javadoc) !2%HhiB'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,o86}6Ag
*/ H?yK~bGQ
public void sort(int[] data) { l9{hq/V
quickSort(data,0,data.length-1); "\w 7q
} g6j?,c|y
private void quickSort(int[] data,int i,int j){ 9jM}~XvV
int pivotIndex=(i+j)/2; H\ F:95
file://swap >*35C`^
SortUtil.swap(data,pivotIndex,j); (A9Fhun
0X6YdW _2X
int k=partition(data,i-1,j,data[j]); J')o|5S1N
SortUtil.swap(data,k,j); geru=7
if((k-i)>1) quickSort(data,i,k-1); Z^3rLCa
if((j-k)>1) quickSort(data,k+1,j); m*&]!mM"0G
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} +$ 'Zf0U
/** p`olCp'
* @param data lXW%FH6c+
* @param i c"f-3kFv
* @param j 6'k<+IR
* @return bRFLcM
*/ y%"{I7!A
private int partition(int[] data, int l, int r,int pivot) { XP!S$Q]D
do{ ;`0%t$@-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C0T;![/4A
SortUtil.swap(data,l,r); (KjoSN(
K
} igCZ|Ru\
while(l SortUtil.swap(data,l,r); W=N+VqK
return l; Cio
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} rBQ _iB_
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} }T(D7|^R
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改进后的快速排序: &*M!lxDN
Yl
Zso2
package org.rut.util.algorithm.support; ` Fa~
kMIcK4.MH
import org.rut.util.algorithm.SortUtil; f\|w'
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/** V'z1
* @author treeroot i1 }:8Unxf
* @since 2006-2-2 G|bT9f$
* @version 1.0 f z'@_4hg
*/ LBw1g<&
public class ImprovedQuickSort implements SortUtil.Sort { g];!&R-
I ce~oz)
private static int MAX_STACK_SIZE=4096; Z9v31)q(
private static int THRESHOLD=10; 01 }D,W`
/* (non-Javadoc) hNC&T`.-~B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g|o,uD
*/ qU \w=
public void sort(int[] data) { S|Q@:r"
int[] stack=new int[MAX_STACK_SIZE]; P_F30x(
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int top=-1; }7b%HTF=
int pivot; (~p<
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int pivotIndex,l,r; ; 5*&xz
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stack[++top]=0; j\eI0b @*
stack[++top]=data.length-1; ">\?&0
yuh *
while(top>0){ <$D`Z-6
int j=stack[top--]; X]ipI$'+C
int i=stack[top--]; x+\`gK5
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pivotIndex=(i+j)/2; OAgniLv
pivot=data[pivotIndex]; wW Lj?;bx
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SortUtil.swap(data,pivotIndex,j); k
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5?f ^Rz
file://partition Akq2 d;
l=i-1; 0Um2DjTCG
r=j; d-oMQGOklb
do{ A @i
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tm|ZBM
SortUtil.swap(data,l,r); z<MsKD0Q
} tR#OjkvX
while(l SortUtil.swap(data,l,r); '+@=ILj>
SortUtil.swap(data,l,j); akmkyrz '&
p/ ,=OaVU
if((l-i)>THRESHOLD){ C"y(5U)d
stack[++top]=i; dn&s*
stack[++top]=l-1;
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} .j ?W>F
if((j-l)>THRESHOLD){ !Z1@}`V&;
stack[++top]=l+1; 0j^Kgx
stack[++top]=j; B`EJb71^Xy
} {B~QQMEow
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} ko!)s
file://new InsertSort().sort(data); R!HXhQ
insertSort(data); lqy Qf$t
} y#`tgJ:
/** qv-8)MSr
* @param data m&d|t>3<
*/ P?%s
#I:
private void insertSort(int[] data) { F|`Hm
int temp; xw.A #Zb\_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (O\)_#-D
} ~?l |
[
} zOJ%}
} 1v y*{D
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} ."g`3tVK
B.=FSow
归并排序: [:dY0r+
pd?Mf=>#
package org.rut.util.algorithm.support; G0Iw-vf
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import org.rut.util.algorithm.SortUtil; [DuttFX^x
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/** BT !^~S%w
* @author treeroot EAUEQk?9
* @since 2006-2-2 YqscZ(L:y
* @version 1.0 `Gs9Xmc|
*/ ?4YGT
public class MergeSort implements SortUtil.Sort{ )+#` CIv
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/* (non-Javadoc) juJklSD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "MeVE#O
*/ ,CJWO bn3
public void sort(int[] data) { *tA1az-jO
int[] temp=new int[data.length]; a
.#)G[*
mergeSort(data,temp,0,data.length-1); 9+|$$)
} Q3'llOx
}PlRx6r@
private void mergeSort(int[] data,int[] temp,int l,int r){ jRa43ck
int mid=(l+r)/2; ~g91Pr
if(l==r) return ; #<fRE"v:Q
mergeSort(data,temp,l,mid); /PVk{3
mergeSort(data,temp,mid+1,r); i$Ul(?
for(int i=l;i<=r;i++){ cZ,b?I"Q%
temp=data; wLIMv3;k
} -OV&Md:~
int i1=l; gb1V~
int i2=mid+1; L;z?aZ7n
for(int cur=l;cur<=r;cur++){ rSY!vkLE\
if(i1==mid+1) 2DA]i5
data[cur]=temp[i2++]; RHW]Z
Pr<
else if(i2>r) Da*?x8sSL
data[cur]=temp[i1++]; J0WxR&%a)
else if(temp[i1] data[cur]=temp[i1++]; \
#F
else +Ze}B*0
data[cur]=temp[i2++]; f_OQ./`
} \doUTr R
} G[ PtkPSJ
lf|FWqqV
} s S+MqBh&I
'ms-*c&
改进后的归并排序: }rUN_.n4z
q1x`Bj
package org.rut.util.algorithm.support; `7E;VL^Y1
T=DbBy0-
import org.rut.util.algorithm.SortUtil; %@b0[ZC
h,:m~0gmj
/** ]h`&&B qt
* @author treeroot .vf'YNQ%
* @since 2006-2-2 >58YjLXb
* @version 1.0 [>I<#_^~
*/ +fB5w?Rg
public class ImprovedMergeSort implements SortUtil.Sort { LH.]DVj
K8|r&`X0
private static final int THRESHOLD = 10; ;?Tbnn Wn
XSB"{H>&
/* 6_o*y8s.
* (non-Javadoc) $S6`}3
* s[>,X#7 y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7~h<$8Y(T
*/ C^Yb\N}S
public void sort(int[] data) { -m zIT4
int[] temp=new int[data.length]; u{cW:
mergeSort(data,temp,0,data.length-1); 5{WE~8$
} UW={[h{.|@
e*kpdS~U&
private void mergeSort(int[] data, int[] temp, int l, int r) { e(&v"}Ef`
int i, j, k; Pbn*_/H
int mid = (l + r) / 2; x;.Jw6g
if (l == r) 1t~G|zhX
return; n+9=1Oo"
if ((mid - l) >= THRESHOLD) *8 A
mergeSort(data, temp, l, mid); C3f' {}
else ! I:%0D
insertSort(data, l, mid - l + 1); )AtD}HEv
if ((r - mid) > THRESHOLD) !?jrf ]
A@
mergeSort(data, temp, mid + 1, r); M]
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else _yx>TE2e
insertSort(data, mid + 1, r - mid); VT)oLj/A
\.{$11P#
for (i = l; i <= mid; i++) { _Ay9p[l
temp = data; R%WCH?B<}
} r|8d
4
for (j = 1; j <= r - mid; j++) { cl3K<'D
temp[r - j + 1] = data[j + mid]; a.\:T,cP>
} 3ZPWze6
int a = temp[l]; jRlYU`?
int b = temp[r]; 7aRi5
for (i = l, j = r, k = l; k <= r; k++) { !*&V-4
if (a < b) { ?p{Nwl#
data[k] = temp[i++]; y14;%aQN
a = temp; Y] _ruDIW
} else { 1-uxC^u?|#
data[k] = temp[j--]; m9WDT
b = temp[j]; &ywPuTt
} 2zA4vZkbcw
} s c,Hq\$&
} 4Z=_,#h4.
(,\+tr8r8
/** `?rSlR@+[I
* @param data U}[d_f
* @param l NNR`!Pty
* @param i |s(FLF -
*/ W\,s:6iqz
private void insertSort(int[] data, int start, int len) { nHAS(
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {]!mrAjD
} i#/Jr=
} {lDd.Fn
} 2]jn '4
} Sv#XIMw{,
XEp{VC@=
堆排序: ]cWUZ{puRB
4he GnMD
package org.rut.util.algorithm.support; {6|G@""O
%XDc,AR[
import org.rut.util.algorithm.SortUtil; HZB>{O
xrz,\eTb
/** Sq V},
* @author treeroot TER=*"!
* @since 2006-2-2 /9*B)m"
* @version 1.0 $9#H04.x
*/ n
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public class HeapSort implements SortUtil.Sort{ J1|\Q:-7p
l/GGCnO/
/* (non-Javadoc) kx{{_w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <z&/L/bl"
*/ @V sG'
public void sort(int[] data) { xC:L)7#aw
MaxHeap h=new MaxHeap(); qJs<#MQ2
h.init(data); L| +~"'l
for(int i=0;i h.remove(); 286;=rN]*
System.arraycopy(h.queue,1,data,0,data.length); L#?Ek-
} h 8S. x)
4r#= *
private static class MaxHeap{ hbDXo:
8I?Wt
W
void init(int[] data){ bdrg(d6
this.queue=new int[data.length+1]; ]NY~2jmX
for(int i=0;i queue[++size]=data; .t-4o<7 3
fixUp(size); VBGuC c/
} 9';JXf$
} G@\1E+Ip
$y &E(J
private int size=0; BwGfTua
k68T`Ub\W6
private int[] queue; 'Cfl*iNb
Wx}8T[A}
public int get() { %#:{UR)E
return queue[1]; yCR?UH;
} WIT>!|w_
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public void remove() { ,j{,h_Op
SortUtil.swap(queue,1,size--); ) 1f~ dR88
fixDown(1); o Q2Fjj
} Pb4X\9^
file://fixdown 8 &LQzwa
private void fixDown(int k) { =pO^7g
int j; $E~`\o%Ev
while ((j = k << 1) <= size) { A*2jENgci
if (j < size %26amp;%26amp; queue[j] j++; 7M!I8C0!aO
if (queue[k]>queue[j]) file://不用交换 cWaSn7p !X
break; I\{ 1u
SortUtil.swap(queue,j,k); Y@vTaE^w3
k = j; QzVnL U)
} W=><)miQ@
} @7]yl&LZ
private void fixUp(int k) { oy=js -
while (k > 1) { w^|*m/h|@u
int j = k >> 1; ?
7n`A >T
if (queue[j]>queue[k]) =_2jK0+}l
break; ,t?B+$E
SortUtil.swap(queue,j,k); k 8[n+^
k = j; mbxZL<ua
} 4N_R:B-Vu
} [)M%cyQ
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} 9G#n 0&wRJ
DDP/DD;n}r
} xd?f2=dd~h
W)2p@j59A
SortUtil: +>{2*\cZ5}
1>_8d"<Gd
package org.rut.util.algorithm; 2d #1=+V
KNvZm;Q6
import org.rut.util.algorithm.support.BubbleSort; gnOt+W8
import org.rut.util.algorithm.support.HeapSort; ^A$Zw+P
import org.rut.util.algorithm.support.ImprovedMergeSort; 5|j<`()H
:
import org.rut.util.algorithm.support.ImprovedQuickSort; >}8j+t&T
import org.rut.util.algorithm.support.InsertSort; Lv;^My
import org.rut.util.algorithm.support.MergeSort; %KhI>O<
import org.rut.util.algorithm.support.QuickSort; 36Zf^cFJ
import org.rut.util.algorithm.support.SelectionSort; 9@(PWz=`?
import org.rut.util.algorithm.support.ShellSort; /sx&=[
D
JN-y)L/>
/** (AaoCa[
* @author treeroot x.!V^HQSN
* @since 2006-2-2 ZF9z~9
* @version 1.0 ]?kZni8j_
*/ 2\MT;;ZTZ
public class SortUtil { 4K#>f4(U`g
public final static int INSERT = 1; xQ-<WF1i
public final static int BUBBLE = 2; $aDVG})
public final static int SELECTION = 3; Q:G4Z9Kt
public final static int SHELL = 4; '4+
ur`
public final static int QUICK = 5; {9&;Q|D z
public final static int IMPROVED_QUICK = 6;
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public final static int MERGE = 7; DrUO-
public final static int IMPROVED_MERGE = 8; 30#s aGV
public final static int HEAP = 9; /tx]5`#@7]
TOB-aAO
public static void sort(int[] data) { y|i,|
sort(data, IMPROVED_QUICK); ?r
"{}%
} |^"1{7)
private static String[] name={ )Xz,j9GzJS
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rxvx
}; s 8jV(P(O
7hD>As7`/
private static Sort[] impl=new Sort[]{ _ @NL;w:!
new InsertSort(), kzQ+j8.,U
new BubbleSort(), GX!G>
new SelectionSort(), pHXm>gTd,J
new ShellSort(), jUYWrYJ
new QuickSort(), 45@ I *`
new ImprovedQuickSort(), n?!">G
new MergeSort(), &WuN&As!Z
new ImprovedMergeSort(), C\Wmq
[
new HeapSort() +ZaSM~
}; #C74z$
T= y}y
public static String toString(int algorithm){ ["k,QX
return name[algorithm-1]; i/;\7n
} Q0`wt.}V2
/ |;RV"
public static void sort(int[] data, int algorithm) { _lJ!R:*
impl[algorithm-1].sort(data); mW(W\'~_~
} zx"s*:O
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public static interface Sort { by1<[$8r
public void sort(int[] data); Olt?~}
} #?U}&Bd
urs,34h
public static void swap(int[] data, int i, int j) { [[Ls_ZL!=
int temp = data; +aCv&sg
data = data[j]; w>s,"2&5J
data[j] = temp; .GPT!lDc
} YNyk1cE
} j|DsG,