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。 'X`\vTxB
插入排序: #`?uV)(
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package org.rut.util.algorithm.support; 3aW4Gs<g
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import org.rut.util.algorithm.SortUtil; t6~|T_]
/** po{f*}gas]
* @author treeroot :@Q_oyWE8
* @since 2006-2-2 .k[Ptx>
* @version 1.0 tMupX-V
*/ *r(iegO$
public class InsertSort implements SortUtil.Sort{ SR8[
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/* (non-Javadoc) RCoz;|c`P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6"gncB.
*/ b}[{'
public void sort(int[] data) { M~3(4,
int temp; pW!]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tXfB.[U
} egKYlfe"
} 5% +T~ E*
} +>/Q+nh
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} 4?8GK
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冒泡排序: SkN^ytKE
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package org.rut.util.algorithm.support; {*tewF)|
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import org.rut.util.algorithm.SortUtil; R:OoQ^c
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/** C%G-Ye|@
* @author treeroot mo<g'|0
* @since 2006-2-2 w=O:|Xu#*
* @version 1.0 cj5pI?@e)
*/ 3",6 E(
public class BubbleSort implements SortUtil.Sort{ {"s9A&
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/* (non-Javadoc) {9Y@?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E&]S No<
*/ bQ_i&t\yzB
public void sort(int[] data) { 5>$*#0%"}
int temp; `5h$@
for(int i=0;i for(int j=data.length-1;j>i;j--){ b>;5#OQfn
if(data[j] SortUtil.swap(data,j,j-1); &>sG xK
} )]rGGNF*
} &zUo", }9
} }
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} 0p&:9|'z
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} )FE'#\
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选择排序: D3BX[
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package org.rut.util.algorithm.support; {. eC"
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import org.rut.util.algorithm.SortUtil; h&.9Q{D
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/** 4Uz6*IQNl
* @author treeroot mn4j#-
* @since 2006-2-2 W:hR81ci
* @version 1.0 V/J[~mN9
*/ 90teXxg=|
public class SelectionSort implements SortUtil.Sort { T%-F,i
2>?GD@GE
/* ^:LF
* (non-Javadoc) C[ <&%=
* Eq'YtqU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y~gpi L3u
*/ In:h %4>
public void sort(int[] data) { G
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int temp; < _c84,[V
for (int i = 0; i < data.length; i++) { i8u9~F
int lowIndex = i; KiH#*u S
for (int j = data.length - 1; j > i; j--) { [Zi\L>PHO
if (data[j] < data[lowIndex]) { :IbrV@gN{@
lowIndex = j; yu3EPT!~
} RhX
2qsva-
} !>gc!8Y'o
SortUtil.swap(data,i,lowIndex); ~"+[VE5
} (|h<{ -L
} DpI_`TF#$Z
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} DEqk9Exk`
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Shell排序: $(#o)r>_R
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package org.rut.util.algorithm.support; XlDVJx<&J
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import org.rut.util.algorithm.SortUtil; pl|<g9
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/** ~8}"X] 4
* @author treeroot \1ys2BX
* @since 2006-2-2 _mA[^G=gY
* @version 1.0 r(J7&vR}h
*/ S#2'Jw
public class ShellSort implements SortUtil.Sort{ "c1vW<;
+ +D(P=4hi
/* (non-Javadoc) C@hnT<e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q35%t61Lc
*/ 8Bo'0
public void sort(int[] data) { 2*%0m^#^6
for(int i=data.length/2;i>2;i/=2){ BYNOgB1
for(int j=0;j insertSort(data,j,i); h,
+2Mc<
} oV,>u5:B
} ]+d.X]
insertSort(data,0,1); /DZKz"N
} /rKrnxw
tv\P$|LV`8
/** LW ntZ.
* @param data ~cU,3g
* @param j oA_AnD?G+
* @param i *RN*Bh|$
*/ P0}uTee
private void insertSort(int[] data, int start, int inc) { <bIAq8
int temp; 9~Q.[ A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k3^S^Bv\
} 7QQ1oPV
} ~`8`kk8
} ,i,f1XJ|
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} X(g<rz1J]
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快速排序: ?6tuo:gP
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package org.rut.util.algorithm.support; )]X_')K
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import org.rut.util.algorithm.SortUtil; {IqbO>|"O_
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/** \T<?=A
* @author treeroot B>|@XfPM
* @since 2006-2-2 u_zp?Nc
* @version 1.0 WElB,a-RCp
*/ gd/W8*NFR
public class QuickSort implements SortUtil.Sort{ j/dNRleab
H[!by)H
/* (non-Javadoc) R &T(S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 80axsU^H0
*/ ,#D&*
public void sort(int[] data) { #LBZ%%v
quickSort(data,0,data.length-1); Bam7^g'*!3
} M^k~w{
private void quickSort(int[] data,int i,int j){ (Cqhk:F
int pivotIndex=(i+j)/2; v=9:N/sW
file://swap D(yU:^L
SortUtil.swap(data,pivotIndex,j); 5
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int k=partition(data,i-1,j,data[j]); d~M;@<eD
SortUtil.swap(data,k,j); u,mC`gz
if((k-i)>1) quickSort(data,i,k-1); >`R}ulz)
if((j-k)>1) quickSort(data,k+1,j); ebxpKtEC
(RW02%`jjy
} iG( )"^G
/** ~>2@55wElp
* @param data !C]0l
* @param i T PEg>[
* @param j i0;
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* @return e <2?O
*/ K;^$n>Y
private int partition(int[] data, int l, int r,int pivot) { P(D0ru
do{ K: hZ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3 (Bd`=9
SortUtil.swap(data,l,r); fG_.&!P
} Sqw:U|h\FS
while(l SortUtil.swap(data,l,r); pxy=edd
return l; <mN.6@*{
} rG)K? B~
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} ?"-%>y@w
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改进后的快速排序: [*^`rQ
k@vN_Un
package org.rut.util.algorithm.support; rV;X1x}l
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import org.rut.util.algorithm.SortUtil; GF]V$5.ps
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/** |-t>_+. J'
* @author treeroot c%,@O&o
* @since 2006-2-2
@Tk5<B3
* @version 1.0 /BeA-\B
*/ \o}m]v
i
public class ImprovedQuickSort implements SortUtil.Sort { bn$a7\X-
mY!os91KoO
private static int MAX_STACK_SIZE=4096; CRXIVver
private static int THRESHOLD=10; O.OPIQ=?:w
/* (non-Javadoc) KA^r,Iw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W>[0u3
*/ -36pkC
6
\
public void sort(int[] data) { Q[sj/
int[] stack=new int[MAX_STACK_SIZE]; m][i-|@M
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int top=-1; 9*`(*>S
int pivot; p@`]9tLP(K
int pivotIndex,l,r; O>FE-0rW}e
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stack[++top]=0; rt +a/:4+
stack[++top]=data.length-1; ,e]|[,r#5
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while(top>0){
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int j=stack[top--]; Cf&.hod
int i=stack[top--]; YC,)t71l{
8Qm%T7]UFb
pivotIndex=(i+j)/2; Lt|'("($*
pivot=data[pivotIndex]; yxz)32B?
.A6i?iROe
SortUtil.swap(data,pivotIndex,j); MTyBGrs(
p h5rS<
file://partition eW"L")
l=i-1; 108cf~2&
r=j; a%FM)/oI|T
do{
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DERhmJ;>H
SortUtil.swap(data,l,r); V$OZC;4
} tV'>9YVdG
while(l SortUtil.swap(data,l,r); Ja`xG{~Y7i
SortUtil.swap(data,l,j); p]lZ4#3
=eHoJq
if((l-i)>THRESHOLD){ JI5%fU%O#n
stack[++top]=i; [>MPM$9F-m
stack[++top]=l-1; kuX{2h*`
} vGIe"$hNh
if((j-l)>THRESHOLD){ #?^%#"~4H
stack[++top]=l+1; igGg[I1?
stack[++top]=j; _Qh:*j!
} :"im2J
$F#eD0|
} AP:(/@K|
file://new InsertSort().sort(data); !XtZI3Xu
insertSort(data); C2a2K={
} K5"8zF)*
/** 50E?K!
* @param data vB<2f*U
*/ Yvn*evO4
private void insertSort(int[] data) { gXb
*
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int temp; qRbU@o.3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y<WA-dYoF
} ey/=\@[p
} Z!81\5
} {^jRV@
b;2[E/JKB
} )?$zY5
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归并排序: *u)#yEJ)
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package org.rut.util.algorithm.support; =cwdl7N&I
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import org.rut.util.algorithm.SortUtil; zu!#
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/** VEGp!~D
* @author treeroot PHh4ZFl]_I
* @since 2006-2-2 C9VtRq
* @version 1.0 C(J+tbk
*/ 2,^U8/
public class MergeSort implements SortUtil.Sort{ $MYAYj9r)
}J0HEpn4
/* (non-Javadoc) &0k`=?v$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
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*/ DPM4v7 S
public void sort(int[] data) { r=4vN=:
int[] temp=new int[data.length]; 3cSP1=$*
mergeSort(data,temp,0,data.length-1);
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} 9lR-
('oA{,#L
private void mergeSort(int[] data,int[] temp,int l,int r){ (/e[n.T
int mid=(l+r)/2; *Kmo1>^
if(l==r) return ; $X ]t}=
mergeSort(data,temp,l,mid); ' &<saqA
mergeSort(data,temp,mid+1,r); M}\p/r=
for(int i=l;i<=r;i++){ q!Q*T^-rO
temp=data; l",X
} VxqoE]Dh
int i1=l; & oj$h
int i2=mid+1; Mq Q'Kjo
for(int cur=l;cur<=r;cur++){ |576)
if(i1==mid+1) s#4Q?<65u
data[cur]=temp[i2++]; Rxl/)H[Lc"
else if(i2>r) #'fQx`LV
data[cur]=temp[i1++]; g=Bge)
else if(temp[i1] data[cur]=temp[i1++]; T_I ApC
else \o<&s{6L
data[cur]=temp[i2++]; /=gU
} =
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} byN4?3F
HbMD5(
} `^'0__<M
aBT8mK -.
改进后的归并排序: P:k!dRb9{
A(T=
package org.rut.util.algorithm.support; VX,@Gp_' m
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import org.rut.util.algorithm.SortUtil; 7z9[\]tt
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/** -}KW"#9c
* @author treeroot b.mWB`59
* @since 2006-2-2 9HG" }CGZP
* @version 1.0 5O]eD84B
*/ XEb+Z7L 1
public class ImprovedMergeSort implements SortUtil.Sort { >gZ"^iW
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private static final int THRESHOLD = 10; m?O"LGBB=
2|D<0d#W
/* y2:Bv2}
* (non-Javadoc) YE[{Y(5;q
* U{ZKxE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F0tx.]uS
*/ drd5oZ
public void sort(int[] data) { OJ,Z
int[] temp=new int[data.length]; `V=F>s$W
mergeSort(data,temp,0,data.length-1); 2,e>gP\]
} n+w$'l
yPT\9"/
private void mergeSort(int[] data, int[] temp, int l, int r) {
S)W(@R+@4
int i, j, k; ggHz-oNY
int mid = (l + r) / 2; (tzfyZ M
if (l == r) 0s%]%2ON
return; ;`rz ]7,*
if ((mid - l) >= THRESHOLD) ,Laz515
mergeSort(data, temp, l, mid); $##LSTA
else F?hGt]o
insertSort(data, l, mid - l + 1); Dt
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if ((r - mid) > THRESHOLD) LT6VZ,S
mergeSort(data, temp, mid + 1, r); 3TF'[(K=
else T74."Lo#
insertSort(data, mid + 1, r - mid); ({9P,
D~2
],w+4;+
for (i = l; i <= mid; i++) { }`D-]/T8.
temp = data; gtJCvVj>g
} c2Up<#t
for (j = 1; j <= r - mid; j++) { d1hXzJs
temp[r - j + 1] = data[j + mid]; g <5G#
} [A46WF>L
int a = temp[l]; U?(+ {4l
int b = temp[r]; <: I]0|[
for (i = l, j = r, k = l; k <= r; k++) { =(Wl'iG
if (a < b) { am#(ms
data[k] = temp[i++]; u%rB]a$/
a = temp; (m&''yaH
} else { ~_W>ND
data[k] = temp[j--]; xT;j_'9U;
b = temp[j]; y>|AX/n
} A^@,Ha
} ZA8FX
} K])|
V
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/** -`d(>ok
* @param data zR_yxs'
* @param l O`FuXB(t
* @param i Zm#qW2a]P
*/ Y"'k $jS-
private void insertSort(int[] data, int start, int len) { VDC"tSQ
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {6brVN.V
} }I
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} H`Ld,E2ex&
} vp..>BMJ
} Wkc^?0p
VO+3@d:
堆排序: ["XS|"DM
OvtiFN^s'
package org.rut.util.algorithm.support; =%R|@lz_x
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import org.rut.util.algorithm.SortUtil; $-;x8O]u
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/** k80!!S=_>
* @author treeroot l$eKV(CZ4
* @since 2006-2-2 77o&$l,A|
* @version 1.0 `%Uz0h F
*/ ?KtvXTy{m
public class HeapSort implements SortUtil.Sort{ ~ZXAW~a}
7T@"2WYat
/* (non-Javadoc) ~AG."<}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u@$pOLI
*/ j aq/]I7
public void sort(int[] data) { ljRR{HOl
MaxHeap h=new MaxHeap(); qr[+^*Ha
h.init(data); DU.[Sp
for(int i=0;i h.remove(); R22P
ol
System.arraycopy(h.queue,1,data,0,data.length); +Y|HO[
} *r]Mn~3
Ax"I$6n>
private static class MaxHeap{ h2#S ?
W(&9S[2
void init(int[] data){ rkC6-9V
this.queue=new int[data.length+1]; P
g1EE"N@
for(int i=0;i queue[++size]=data; AC9#!#
OGB
fixUp(size); mB]Y;R<
} >Gyg`L\
} {uuvgFC
I6,sN9`
K
private int size=0; 6mbHfL>cO
d( +E0
private int[] queue; XG_Iq ,
kFF)6z:2
public int get() { W_z?t;
return queue[1]; ^7&0Pm
} -(YdK8
{ei,>5K
public void remove() { Je~d/,^WU
SortUtil.swap(queue,1,size--); b(McH*_8e
fixDown(1); \qh
-fW; #
} ;Z(~;D
file://fixdown hSyA;*)U
private void fixDown(int k) { U?:<clh
int j; IRW%*W#
while ((j = k << 1) <= size) { J((.zLvz
if (j < size %26amp;%26amp; queue[j] j++; 9QryW\6.@z
if (queue[k]>queue[j]) file://不用交换 'L0{Ed+9
break; UCP4w@C
SortUtil.swap(queue,j,k); `nDgwp:b"
k = j; 1*Ui=M4
} Ug|o($CY
} C5jR||
private void fixUp(int k) { )wwQv2E
while (k > 1) { X[
o9^<
int j = k >> 1; "x$RTuWA9
if (queue[j]>queue[k]) wf8GH}2A
break; -O=a"G=
SortUtil.swap(queue,j,k); (iZE}qf7g
k = j; X@ Gm:6
} I=3e@aTZ,
} uY;2tZldf=
{%;KkC8=R
} jW-j+WGSM
(SlrV8;
} gB?~!J?
~CB6+t>
SortUtil:
iEf6oM
Eb<iR)e H=
package org.rut.util.algorithm; >r"~t70C~]
}Rc8\,
import org.rut.util.algorithm.support.BubbleSort; SEc3`y;j%
import org.rut.util.algorithm.support.HeapSort; S6sw)
import org.rut.util.algorithm.support.ImprovedMergeSort; \KaWR
import org.rut.util.algorithm.support.ImprovedQuickSort; R.EA5X|_
import org.rut.util.algorithm.support.InsertSort; )A4WK+yD$z
import org.rut.util.algorithm.support.MergeSort; zaVDe9B,7
import org.rut.util.algorithm.support.QuickSort; |ei?s1)
import org.rut.util.algorithm.support.SelectionSort; aQEMCWxZ
import org.rut.util.algorithm.support.ShellSort; J0U9zI4
+{j? +4(B
/** L:y}
L
* @author treeroot syYg, G[
* @since 2006-2-2 Hop$w
* @version 1.0 <4W"ne28
*/ AE)<ee%\\
public class SortUtil { m$xyUv1
public final static int INSERT = 1; xwj%X%2
public final static int BUBBLE = 2; dsP1Zq
public final static int SELECTION = 3; !(hP{k ^g
public final static int SHELL = 4; {daNw>TH
public final static int QUICK = 5; h
!~u9
public final static int IMPROVED_QUICK = 6; O]n"aAu@
public final static int MERGE = 7; nNIV(
public final static int IMPROVED_MERGE = 8; [Pdm1]":(
public final static int HEAP = 9; cf|<~7
'wAOY
public static void sort(int[] data) { =$g8"[4
sort(data, IMPROVED_QUICK); 22|f!la8n
} rSD!u0c[
private static String[] name={ |Mp_qg?g
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j:0VtJo~
}; [ed%"f
HB$*xS1
private static Sort[] impl=new Sort[]{ >,` /
z
new InsertSort(), Tv0|e'^
new BubbleSort(), Hm+-gI3*
new SelectionSort(), ,XW6W&vR;
new ShellSort(), Lrr^obc
new QuickSort(), 2k[i7Rl \c
new ImprovedQuickSort(), '!!w|kd
new MergeSort(), *_$%Tv.]
new ImprovedMergeSort(), buRXzSR
new HeapSort() )Xa`LG=|
}; vL13~q*F
}}?L'Vby
public static String toString(int algorithm){ A>$VkGo
return name[algorithm-1]; i_ 4FxC4
} r6Z&i^cMe
}(-R`.e;
public static void sort(int[] data, int algorithm) { #Xri%&~
impl[algorithm-1].sort(data); ke~O+]
} _y)#N<
mj<(qZh
public static interface Sort { {W}.z
public void sort(int[] data); %#NaM\=8v
} sb_>D`>
!>/U6h,_
public static void swap(int[] data, int i, int j) { i6r%;ueLb
int temp = data; Xt/T0.I
data = data[j]; iLy}G7h
data[j] = temp; 9c806>]U^
} '=x
} S,vrz!'>A