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[JAVA]用Java实现的各种排序

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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。 U"/yB8!W  
插入排序: )fy <P;g  
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package org.rut.util.algorithm.support; A &;EV#]ge  
Y]M^n&f  
import org.rut.util.algorithm.SortUtil; ;*"!:GR%h  
/** 3a/[."W u  
* @author treeroot #efqG=q  
* @since 2006-2-2 %h3L  
* @version 1.0 jaL$LJV  
*/ @yCW8]  
public class InsertSort implements SortUtil.Sort{ ;!^ +N  
pqkcf \  
/* (non-Javadoc) - a   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K`,nW6\  
*/ $dr27tse&<  
public void sort(int[] data) { V> 1D1  
int temp; y4 dp1<t%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bmi:2} j  
} J& n ^y  
} 9$:QLE+t  
} -MQZiq7H4  
@*bvMEE  
} Zm`'MsgFr  
C,9)V5!tP2  
冒泡排序: B#| Z`mZ  
:Pj W:]  
package org.rut.util.algorithm.support; $^!a`Xr  
u'#`yTB6b  
import org.rut.util.algorithm.SortUtil; uDpf2(>s  
%H 8A=  
/** |E"Xavi>  
* @author treeroot }g%KvYB_  
* @since 2006-2-2 E~rs11  
* @version 1.0 :5$xh  
*/ ( [K2:n\  
public class BubbleSort implements SortUtil.Sort{ v; je<DT  
y21)~  
/* (non-Javadoc) 03P N{<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?"5~Wwp.T  
*/ 8=lHUn9l  
public void sort(int[] data) { \.K\YAM<  
int temp; eL]{#WL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ BUcaj.S  
if(data[j] SortUtil.swap(data,j,j-1); h9tB''ePE  
} oV%( 37W9=  
} Gr`MGQ,  
} ?Ry%c6(}  
} ?7fQ1/emhO  
<O <'1uO,  
} >cGh|_9  
J- @o@!o  
选择排序: ?/o2#iJx  
{m?K2]](  
package org.rut.util.algorithm.support; K> c8r8!  
<^H1)=tlF  
import org.rut.util.algorithm.SortUtil; Bf D,z  
\O8Y3|<  
/** < fojX\}3  
* @author treeroot Fw(b1d>E  
* @since 2006-2-2 ZXF AuF  
* @version 1.0 &:!ZT=  
*/ &4w\6IR  
public class SelectionSort implements SortUtil.Sort { V6DBKq  
d,GtH)(s  
/* [u`17hyX  
* (non-Javadoc) o 2[vM$]  
* .g6PrhzFbk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pg!;o= { M  
*/ 1qB!RIau  
public void sort(int[] data) { h,!G7V  
int temp; >N+bU{s  
for (int i = 0; i < data.length; i++) { -13P 2<i+  
int lowIndex = i; WH pUjyBP  
for (int j = data.length - 1; j > i; j--) { PK:o}IWn~x  
if (data[j] < data[lowIndex]) { 3p?<iVE  
lowIndex = j; =j'J !M  
} F20wf1^  
} vF*^xhh  
SortUtil.swap(data,i,lowIndex); 0?J|C6XM#4  
} ? 6yF{!F*  
} 0)6i~MglY  
y V 9]_k  
} Z@>=&  
7- *( a  
Shell排序: I]uOMWZs  
(<d&BV-"  
package org.rut.util.algorithm.support; 'S%} ?#J  
. Ce&9l  
import org.rut.util.algorithm.SortUtil; }skRlC  
m>Yo 9/XpZ  
/** B9m>H=8a  
* @author treeroot 1_33;gP  
* @since 2006-2-2 8%vh6$s6/  
* @version 1.0 i-:8TfI,  
*/ ? $)x$nS`  
public class ShellSort implements SortUtil.Sort{ rm5T=fNJ  
T!^?d5uW#  
/* (non-Javadoc) Vid{6?7kh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E1U4v&P  
*/ 6)uPM"cO  
public void sort(int[] data) { W|r+J8  
for(int i=data.length/2;i>2;i/=2){ k *G!.  
for(int j=0;j insertSort(data,j,i); P/C+L[X=  
} Z uFV tW@  
} tn:/pPap  
insertSort(data,0,1); ~7,2N.vO2  
} azR;*j8Q'  
@aqd'O  
/** uK4'n+_>\  
* @param data LEn=dU  
* @param j O$<%z[  
* @param i aUIc=Z  
*/ M<#)D  
private void insertSort(int[] data, int start, int inc) { q5'yD;[hE  
int temp; `lu"yF  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +s/N@]5nW  
} AihL>a%  
} qmue!Fv#g  
} H/p-YtY  
O#Zs3k  
} \CJx=[3(  
bCE7hutl  
快速排序: f'zU^/$rf  
xtIehr0{$I  
package org.rut.util.algorithm.support; 7q2"b?|h  
Zy!)8<Cgm'  
import org.rut.util.algorithm.SortUtil; ?sjZ13 SUa  
:cmI"Bo  
/** aCYm$6LmA  
* @author treeroot v0hfY   
* @since 2006-2-2 }`<>$2b  
* @version 1.0 >XXMIz:  
*/ ^M"=A}h  
public class QuickSort implements SortUtil.Sort{ Rvu3Qo+  
~J. Fl[  
/* (non-Javadoc) FVC2XxP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <*r<+S   
*/ }n2-*{)x  
public void sort(int[] data) { IioE<wS)  
quickSort(data,0,data.length-1); |W~V@n8"6  
} QGbD=c7  
private void quickSort(int[] data,int i,int j){ f,`}hFD  
int pivotIndex=(i+j)/2; bWQORjnd8  
file://swap '4^V4i  
SortUtil.swap(data,pivotIndex,j); _;J9q}X  
_r?;lnWx@  
int k=partition(data,i-1,j,data[j]); ]\D6;E8P-~  
SortUtil.swap(data,k,j); QS=$#Gp  
if((k-i)>1) quickSort(data,i,k-1); @aiLG wh  
if((j-k)>1) quickSort(data,k+1,j); rs 1*H  
[K)1!KK,L  
} R26tQbwE  
/** ,@'){V  
* @param data LD~uI  
* @param i x@ s`;qz  
* @param j +U_-Lq )  
* @return \xO2WD  
*/ FbCZV3Y  
private int partition(int[] data, int l, int r,int pivot) { |B{$URu  
do{ ,5A>:2 zs  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P8,{k  
SortUtil.swap(data,l,r); 6JFDRsX>)?  
} N>}K+M>  
while(l SortUtil.swap(data,l,r); lPFdQ8M  
return l; (15Yw9Mv  
} YqY6\ mo  
jC Kt;lj  
} q*y9/HnI  
i[t=@^|  
改进后的快速排序: @+CSY-g$  
I_6` Z 0  
package org.rut.util.algorithm.support; E_' n4@}Cx  
v20I<!5w  
import org.rut.util.algorithm.SortUtil; M%5$-;6~_  
g7U:A0Z  
/** o4[2`mT  
* @author treeroot :{xN33@6\X  
* @since 2006-2-2 M(h H#_ $  
* @version 1.0 ;\*Od?1  
*/ mN'9|`>V>  
public class ImprovedQuickSort implements SortUtil.Sort { HsgTHe  
w)m0Z4*  
private static int MAX_STACK_SIZE=4096; 9-E>n)  
private static int THRESHOLD=10; UQf>5g  
/* (non-Javadoc) _6-/S!7Y\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V\M!]Nnxr  
*/ 'y M:W cN  
public void sort(int[] data) { ^Lfn3.M  
int[] stack=new int[MAX_STACK_SIZE]; U_{JM`JY  
ge {4;,0=  
int top=-1; etK,zEd  
int pivot; yxP?O@(  
int pivotIndex,l,r; \IZ4( Z  
(z1%lZ}(  
stack[++top]=0; vYt:}$AE  
stack[++top]=data.length-1; 9c;lTl^4;  
{5tEsv  
while(top>0){ +#I~#CV!  
int j=stack[top--]; TnU$L3k  
int i=stack[top--]; ^)IL<S&h  
"g:&Ge*X  
pivotIndex=(i+j)/2; <K[Zl/7I  
pivot=data[pivotIndex]; 9MzkG87J  
POg0=32  
SortUtil.swap(data,pivotIndex,j); JdYF&~  
PKM$*_LcGI  
file://partition pnA]@FW  
l=i-1; 'TN{8~Gt*  
r=j; n#4J]Z@  
do{ 4%v+ark8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,WDAcQ8\  
SortUtil.swap(data,l,r); muX4Y1M_  
} !g&B)0u]*  
while(l SortUtil.swap(data,l,r); Y&Lk4  
SortUtil.swap(data,l,j); WfbNar[  
%^%-h}1  
if((l-i)>THRESHOLD){ g+/U^JIc4l  
stack[++top]=i; GN;XB b]w  
stack[++top]=l-1; =i5:*J  
} UuqnL{  
if((j-l)>THRESHOLD){ FHcqu_;J  
stack[++top]=l+1; .x$T a l  
stack[++top]=j; z57papo  
} v8k ^=A:  
*4^]?Y\*  
} [<fLPa  
file://new InsertSort().sort(data); 0o=)&%G  
insertSort(data); Z%9^6kdY  
} dVt@D&  
/** +95dz?~  
* @param data %y7wF'_Y  
*/ ftqW3VW  
private void insertSort(int[] data) { h-rj  
int temp; s]%!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K':pU1  
} P~ZV:Of  
} ~kJpBt7M  
} Lpbn@y26<  
R Mt vEa  
} _vLT!y  
Q0; gF?  
归并排序: 4$2T zJE  
99>yaW  
package org.rut.util.algorithm.support; coVT+we  
F}.TT =((8  
import org.rut.util.algorithm.SortUtil; 2_\|>g|  
U`p<lxRgQ  
/** _w/N[E  
* @author treeroot `LU,uz  
* @since 2006-2-2 d lLk4a+  
* @version 1.0 !X <n:J  
*/ kpw4Mq@  
public class MergeSort implements SortUtil.Sort{ &2]D+aL|h  
>T^v4A  
/* (non-Javadoc) r8?Lr-;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'htA! KHF  
*/ '^(v8lCu  
public void sort(int[] data) { =pOY+S|  
int[] temp=new int[data.length]; +<WT$ddK=5  
mergeSort(data,temp,0,data.length-1); KR(ftG'  
} d>98 E9  
1p<?S}zg@  
private void mergeSort(int[] data,int[] temp,int l,int r){ :tG".z  
int mid=(l+r)/2; K y2xWd8  
if(l==r) return ; gq1Y]t|4F  
mergeSort(data,temp,l,mid); 1WN93 SQ=  
mergeSort(data,temp,mid+1,r); LHz<=]?@  
for(int i=l;i<=r;i++){ VEEeQy  
temp=data; {-`OE  
} /)4r2x  
int i1=l; >qvD3 9w  
int i2=mid+1; jeFl+K'1  
for(int cur=l;cur<=r;cur++){ ]b| @<E7Y  
if(i1==mid+1) <d`UifqD  
data[cur]=temp[i2++]; 6i9I 4*'  
else if(i2>r) FOG+[v  
data[cur]=temp[i1++]; >t }D5ah  
else if(temp[i1] data[cur]=temp[i1++]; 1CVaGD^r{  
else r3vj o(  
data[cur]=temp[i2++]; =F[,-B~  
} 2=M!lB *  
} hD"~ ^  
-XG$ 0  
} h5keYBA  
9d}nyJ  
改进后的归并排序: 8J1.(Mwb?  
J*C*](  
package org.rut.util.algorithm.support; ]LOtwY  
}jgAV  
import org.rut.util.algorithm.SortUtil; : {Z^ _;Tf  
p&l:937  
/** k $&A  
* @author treeroot deY<+!  
* @since 2006-2-2 2A ,36,  
* @version 1.0 BVp.A]  
*/ K3D $ hb  
public class ImprovedMergeSort implements SortUtil.Sort { [E7@W[xr  
Jz0S2&  
private static final int THRESHOLD = 10; tp2 _OQAQ  
o9\m? ~g!E  
/* .. TjEBp  
* (non-Javadoc) <F & hfy  
* 'B6H/d>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +[[gU;U"v  
*/ hzo,.hS's  
public void sort(int[] data) { :/l   
int[] temp=new int[data.length]; 1&"1pH  
mergeSort(data,temp,0,data.length-1); 0^Cx`xdX:  
} 4344PBj  
p<19 Jw<  
private void mergeSort(int[] data, int[] temp, int l, int r) { JCfToFB  
int i, j, k; R\amcQ 9  
int mid = (l + r) / 2; |c/rHEZ  
if (l == r)  m:Abq`C  
return; O_Q,!&*6  
if ((mid - l) >= THRESHOLD) *60)Vo.=  
mergeSort(data, temp, l, mid);  y-#tU>P  
else gNQJ:!  
insertSort(data, l, mid - l + 1); }!Lr!eALr  
if ((r - mid) > THRESHOLD) h!~yYNQ"  
mergeSort(data, temp, mid + 1, r); !:{_<C"D  
else ksp':2d}  
insertSort(data, mid + 1, r - mid); 0pOha(,~  
`VN<6o(  
for (i = l; i <= mid; i++) { ?%ntO]  
temp = data; x=N;>  
} @R{&>Q:.  
for (j = 1; j <= r - mid; j++) { cEu98nP  
temp[r - j + 1] = data[j + mid]; ix`xdVj`  
} ^dD?riFAk  
int a = temp[l]; fZgU@!z  
int b = temp[r];  \RO Sd  
for (i = l, j = r, k = l; k <= r; k++) { >WX'oP(<  
if (a < b) { mIodD)?{  
data[k] = temp[i++]; ^%JWc 3jZ  
a = temp; tH(#nx8  
} else { ,-kZ5&r  
data[k] = temp[j--]; i(HhL&  
b = temp[j]; ^O m]B;  
} yQ50f~9  
} E5Jk+6EcMa  
} Y))sk-  
vq:j?7  
/** 6si-IJ  
* @param data r |/9Dn%  
* @param l r+u\jZ  
* @param i pE,BE%  
*/ PX)qA =4q  
private void insertSort(int[] data, int start, int len) { _P1-d`b0 a  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j"s(?  
} MJ08@xGa  
} #u@!O%MJ  
} Rby7X*.-v  
} l !v#6#iq  
v^ G5 N)F  
堆排序: ?VsZo6Z"  
+%v4Ci"%y  
package org.rut.util.algorithm.support; ;7>--_?=  
5Ncd1  
import org.rut.util.algorithm.SortUtil; iI0'z=J  
\-yi#N  
/** 6I0MJpLW  
* @author treeroot g*M3;G  
* @since 2006-2-2 O~VUViS6$  
* @version 1.0 WgB,,L,  
*/ YeJdkt  
public class HeapSort implements SortUtil.Sort{ &YNhKm@"  
6}$cDk`dz  
/* (non-Javadoc) 1S:H!h3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :9Pqy pd+  
*/ Fu$sfq  
public void sort(int[] data) { 'P#I<?vB  
MaxHeap h=new MaxHeap(); 9nE%r\H  
h.init(data); 5hMiCod  
for(int i=0;i h.remove(); )j'b7)W\  
System.arraycopy(h.queue,1,data,0,data.length); &IYkeGQr  
} 0 CS_-  
{5h_$a!TaU  
private static class MaxHeap{ (%Rs&/vU~  
~fe0Ba4  
void init(int[] data){ 3Y8 V?* 1|  
this.queue=new int[data.length+1]; Z# 04 ]  
for(int i=0;i queue[++size]=data; Tw5BvB1  
fixUp(size); 4r*6fJ*bJ  
} cS"6%:hQ  
} ZHJzh\?  
aXagiz\;  
private int size=0; x!+ a,+G  
-j,o:ng0  
private int[] queue; }1wuH  
I_rVeMw=  
public int get() { VbYapPu4b!  
return queue[1]; _?"J.i  
} yrX]w3kr%  
Lsdu:+-  
public void remove() { j>iM(8`t1  
SortUtil.swap(queue,1,size--); T5h[{J^  
fixDown(1); =Sq7U^(>  
} y8@!2O4  
file://fixdown `U R.Rn/x  
private void fixDown(int k) { cg5DyQ(  
int j; ` g~-5Z~J  
while ((j = k << 1) <= size) { AXCJFqk;  
if (j < size %26amp;%26amp; queue[j] j++; J,7\/O(`A  
if (queue[k]>queue[j]) file://不用交换 vY6|V$  
break; :?J$ +bm}  
SortUtil.swap(queue,j,k); ' e@}N)IX  
k = j; 'Vd>"ti  
} ?)&TewP  
} vKeK]  
private void fixUp(int k) { ?kSs7e>  
while (k > 1) { /<@tbZJ*8  
int j = k >> 1; !IS ,[  
if (queue[j]>queue[k]) c LJCLKJ  
break; 'zaB5d~l  
SortUtil.swap(queue,j,k); ;b^@o,=  
k = j; e_I 8Jj4  
} ]rS+v^@QH  
} C1J'. !  
-_3.]o/J  
} b%BwGS(z  
:vjbuqN]  
} {~SR>I3sv  
y[cAU:P?  
SortUtil: ~EBZlTN  
*K;~V  
package org.rut.util.algorithm; 2+.m44>Ti  
z!%}0  
import org.rut.util.algorithm.support.BubbleSort; IYWD_}_ $  
import org.rut.util.algorithm.support.HeapSort; A{QS+fa/  
import org.rut.util.algorithm.support.ImprovedMergeSort; 19S,>  
import org.rut.util.algorithm.support.ImprovedQuickSort;  x^"OH  
import org.rut.util.algorithm.support.InsertSort; @;0Ep 0[  
import org.rut.util.algorithm.support.MergeSort; -3fvO~  
import org.rut.util.algorithm.support.QuickSort; P1kd6]s  
import org.rut.util.algorithm.support.SelectionSort; [,dsV d  
import org.rut.util.algorithm.support.ShellSort; :MVD83?4  
a'Z"Yz^Eo  
/** ktCh*R[`  
* @author treeroot ~VOmMw4HV  
* @since 2006-2-2 G4i&:0  
* @version 1.0 <  5ow81  
*/ . XmD[=  
public class SortUtil { :X^B1z3X4  
public final static int INSERT = 1;  tua+R_"  
public final static int BUBBLE = 2; Ii)TCSt9U?  
public final static int SELECTION = 3; wv<"W@& 9  
public final static int SHELL = 4; XxIUB(.QI  
public final static int QUICK = 5; 7Q`4*H6  
public final static int IMPROVED_QUICK = 6; wcO+P7g  
public final static int MERGE = 7; ,Y*f]  
public final static int IMPROVED_MERGE = 8; &^EkM  
public final static int HEAP = 9; X7G6y|4;w  
,O2F}5|;  
public static void sort(int[] data) { ;23F8M%wH  
sort(data, IMPROVED_QUICK); -+L1Hid.7  
} ,MLPVDN*D  
private static String[] name={ G~JQcJFj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l$FHL2?Cp  
}; it.l;L_nW  
`27? f$,  
private static Sort[] impl=new Sort[]{ Kl* ##qw!  
new InsertSort(), 9u9#&xx  
new BubbleSort(), "x{S3v4Rb5  
new SelectionSort(), /4|qfF3  
new ShellSort(), FUDM aI  
new QuickSort(), G -;Yua2\  
new ImprovedQuickSort(), ]?kf;A@  
new MergeSort(), ':Te#S  
new ImprovedMergeSort(), Cc^t&Eg  
new HeapSort() Po2YDj`  
}; !} 1p:@  
P=h2Z,2  
public static String toString(int algorithm){ = *sP, 6  
return name[algorithm-1]; a7+BAma<  
} <Z vG&  
=q._Qsj?fu  
public static void sort(int[] data, int algorithm) { o5)U3U1|  
impl[algorithm-1].sort(data); A`@we  
} f.,-KIiF  
4U((dx*m  
public static interface Sort { ?.T=(-  
public void sort(int[] data); ?D.] c;PR  
} 3}H94H)]a  
!u^(<.xJ   
public static void swap(int[] data, int i, int j) { k8h$#@^  
int temp = data; OvFZ&S[  
data = data[j]; O6`@'N>6P  
data[j] = temp; *P_TG"^{W  
} -X |G  
} 43/|[  
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