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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。 Hbm 4oYN  
插入排序: c_lHj#A(l  
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package org.rut.util.algorithm.support; lj4Fg*/Yn  
v4$/LUJZp  
import org.rut.util.algorithm.SortUtil; 5]xuU.w'  
/** )uPJ? 2S9  
* @author treeroot d,<ni"  
* @since 2006-2-2 NBikYxa  
* @version 1.0 .~z'm$s1o  
*/ 9shf y4?k  
public class InsertSort implements SortUtil.Sort{ gI+8J.AG=  
FG?Mc'r&  
/* (non-Javadoc) fi+}hGj(r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .[|UNg  
*/ 0|3I^b  
public void sort(int[] data) { &|yLTx  
int temp; 7& M-^Ev  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {#,<)wFV\  
} | ,8z" g  
} |s8N  
} @[GV0*yz$  
6j#JhcS+  
} +pofN-*%  
>{#JIG.  
冒泡排序: Q*ITs!~Z  
\pmS*Dt  
package org.rut.util.algorithm.support; wxN)d B  
GES}o9?#  
import org.rut.util.algorithm.SortUtil;  rxY|&!f  
}@DCcf$<  
/** ) SV.|  
* @author treeroot j=\h|^gA  
* @since 2006-2-2 g \mE  
* @version 1.0 N0`9/lr|  
*/ !_W:%t)g  
public class BubbleSort implements SortUtil.Sort{ blO4)7m  
4kOO3[r  
/* (non-Javadoc) #-{<d% qk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U,P_bz*)  
*/ 1S{Biqi+  
public void sort(int[] data) { ofvR0yV  
int temp; w.qtSW6M+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ BN/ 4O?jD9  
if(data[j] SortUtil.swap(data,j,j-1); 2u{~35  
} w)btv{*  
} n<?U6~F&~  
} qxL\G &~  
} Qg>NJ\*Q  
rd <m:r  
} STKL  
2TK \pfD  
选择排序: uvys>]+  
iP:i6U]  
package org.rut.util.algorithm.support; C.j+Zb1Z(  
KE?t?p  
import org.rut.util.algorithm.SortUtil; ,'L>:pF3  
$8EEtr,!  
/** @"w4R6l+*  
* @author treeroot GgO5=|  
* @since 2006-2-2 sXLW';Fz  
* @version 1.0 ' jciX]g  
*/ 9QZaa(vN  
public class SelectionSort implements SortUtil.Sort { lu utyK!  
^2+Ex+  
/* UQVL)-Z  
* (non-Javadoc) >XN[KPTa  
* 7iB!Uuc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C6+ 5G-Z  
*/ O\}C`CiC  
public void sort(int[] data) { yD[d%w  
int temp; Cq5.gkS<  
for (int i = 0; i < data.length; i++) { Mf5j'n  
int lowIndex = i; ,@$5,rNf  
for (int j = data.length - 1; j > i; j--) { g[xoS\d  
if (data[j] < data[lowIndex]) { `sjY#Ua<  
lowIndex = j; 5Cf!NNV  
} 4jT6h9%  
} t}t(fJHY`  
SortUtil.swap(data,i,lowIndex); _~FfG!H ^X  
} UmKE]1Yw4r  
} I}$`gUXX8x  
_[:6.oNjIe  
} g)Z8WH$;H3  
q(sTKT[V  
Shell排序: i4D(8;  
bpu`'Vx  
package org.rut.util.algorithm.support; Iu'9yb  
)\wkVAm  
import org.rut.util.algorithm.SortUtil; PgtLyzc  
Ku5||u.F4*  
/** X'A`" }=_  
* @author treeroot Bwg(f_[1  
* @since 2006-2-2 uHbg&eW  
* @version 1.0 v>X!/if<y  
*/ ]3r}>/2(  
public class ShellSort implements SortUtil.Sort{ Sv=YI  
dCx63rF`G  
/* (non-Javadoc) FvT&nb{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &1 \/B  
*/ ,GOIg|51  
public void sort(int[] data) { rFzNdiY  
for(int i=data.length/2;i>2;i/=2){ W]4Z4&  
for(int j=0;j insertSort(data,j,i); zDF Nx:h  
} GrF4*I`q  
} <H64L*,5'7  
insertSort(data,0,1); :8S;34Y;  
} 74e=zW?  
b42%^E  
/** w4 yrAj 2  
* @param data ]w*"KG!(  
* @param j q@.>eB'92P  
* @param i IIk_!VzT  
*/ VuLb9Kn  
private void insertSort(int[] data, int start, int inc) { \zd[A~!  
int temp; u%-]-:c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pl8b&bLzi  
} ~cU1 /CW8  
} d+n2 c`i  
} {lK2yi  
<ZT C^=3  
} eP~bl   
4Kqo>|C  
快速排序: ]($ \7+  
!ooi.Oz*Tu  
package org.rut.util.algorithm.support; WZa6*pF  
-TD\?Q  
import org.rut.util.algorithm.SortUtil; }L0 [ Jo:  
(bm^R-SbB  
/** OvH:3 "Sdy  
* @author treeroot EBhdP  
* @since 2006-2-2 # epP~J_f  
* @version 1.0 wv~:^v'  
*/ @Y0ZW't  
public class QuickSort implements SortUtil.Sort{ 9nY`rF8@  
 \? /'  
/* (non-Javadoc) Whd >  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5owAc6  
*/ $Sc_E:`]  
public void sort(int[] data) { j"Jf|Hq $  
quickSort(data,0,data.length-1); |E~c#lV  
} mG)5xD  
private void quickSort(int[] data,int i,int j){ t?hfP2&6  
int pivotIndex=(i+j)/2; x'EEmjJ  
file://swap Jm!,=} oP'  
SortUtil.swap(data,pivotIndex,j); 0 u*a=f=  
08\w!!a:  
int k=partition(data,i-1,j,data[j]); c b-IRGF  
SortUtil.swap(data,k,j); {@X>!]  
if((k-i)>1) quickSort(data,i,k-1); <F^9ML+'  
if((j-k)>1) quickSort(data,k+1,j); $9%F1:u  
Byq VNz0L  
} QC'Ru'8S  
/** =A!oLe$%  
* @param data /? %V% n  
* @param i 9L$OSy|  
* @param j tR51Pw  
* @return GR|\OJ<2  
*/ ~d7t\S  
private int partition(int[] data, int l, int r,int pivot) { 2l?^\9&  
do{ DE.].FD'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R;HE{q[ f  
SortUtil.swap(data,l,r); v4e4,Nt  
} 3$hIc)  
while(l SortUtil.swap(data,l,r); s.4+5rE  
return l; 5mam WPw  
} vom3 C9o  
#ss/mvc3  
} )4rt-_t<  
H+*3e&  
改进后的快速排序: 6uD<E  
4dixHpq'  
package org.rut.util.algorithm.support; J4+WF#xI2  
;_\y g)X,  
import org.rut.util.algorithm.SortUtil; JuZkE9C,${  
Mbc&))A  
/** -sJ1q^;f@  
* @author treeroot !aSj1 2J  
* @since 2006-2-2 $e1.y b%  
* @version 1.0 9(t(sP_  
*/ 7R:j^"I@  
public class ImprovedQuickSort implements SortUtil.Sort { ezw*Lo!  
LqYyIbsvf  
private static int MAX_STACK_SIZE=4096; YM`T"`f  
private static int THRESHOLD=10; S ,F[74K  
/* (non-Javadoc) ?OW!D?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g}!{_z  
*/ \me5"ZU  
public void sort(int[] data) { +TbAtkEF*  
int[] stack=new int[MAX_STACK_SIZE]; )l9KDObis  
ECt<\h7}  
int top=-1; YE@yts  
int pivot; e-*@R#x8+  
int pivotIndex,l,r; jyD~ER}J  
CHTK.%AQH!  
stack[++top]=0; n*"r!&Dg  
stack[++top]=data.length-1; .@): Uh  
J4ZHE\  
while(top>0){ 6):1U  
int j=stack[top--]; N!ihj:,  
int i=stack[top--]; LEM%B??&5z  
?98!2:'{9  
pivotIndex=(i+j)/2;  2d*bF.  
pivot=data[pivotIndex]; X<5fn+{]S:  
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SortUtil.swap(data,pivotIndex,j); s,r|p@^  
`U|7sLR  
file://partition Xfg3q.q  
l=i-1; cFc(HADM`r  
r=j; (rFiHv5  
do{ 6 D Xja_lp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S'5)K  
SortUtil.swap(data,l,r); /e"iY F  
} ,K[e?(RP  
while(l SortUtil.swap(data,l,r); ,KJHYm=Q  
SortUtil.swap(data,l,j); G_?U?:!AC  
S?CT6moXA  
if((l-i)>THRESHOLD){ )!v"(i.5Xo  
stack[++top]=i; 3!8(A/YP;  
stack[++top]=l-1; 4Q0ZY(2 EO  
} PP{ 9Y Vr  
if((j-l)>THRESHOLD){ P@PF" {S  
stack[++top]=l+1; _yg;5#3  
stack[++top]=j; Lfn$Q3}O`$  
} ,=\.L_'  
i{m!v6j:  
} T^Ia^B-%}g  
file://new InsertSort().sort(data); )Zr\W3yWX  
insertSort(data);  >SQzE  
} "a].v 8l!  
/** N ;=z o-8  
* @param data XfE0P(sE  
*/ %SB4_ r*<  
private void insertSort(int[] data) { @\nQ{\^;  
int temp; 7SS#V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z=KDkpV  
} ]=t}8H  
} u `/V1  
} +rU{-`dy9'  
IDn<5#  
} ;4!H- qZ  
|` ~ioF  
归并排序: C W#:'  
)YgntI@  
package org.rut.util.algorithm.support; +z nlf-  
F oC $X  
import org.rut.util.algorithm.SortUtil; 3" m]A/6C}  
WYb}SI(E  
/** VxDIA_@y  
* @author treeroot kr+p&|.  
* @since 2006-2-2 C]2-V1,ZX  
* @version 1.0 AuK$KGCI=  
*/ {Z k^J  
public class MergeSort implements SortUtil.Sort{ 7YD+zd:  
%W9R08`  
/* (non-Javadoc) ~<!j]@.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \{`^Q+<  
*/ qK7:[\T|?T  
public void sort(int[] data) { (Ff}Y.4  
int[] temp=new int[data.length]; g,]o+nT  
mergeSort(data,temp,0,data.length-1); _U&HXQ8X  
} UB5H8&Rf!  
["f6Ern  
private void mergeSort(int[] data,int[] temp,int l,int r){ 27fLW&b2  
int mid=(l+r)/2; wr"0+J7  
if(l==r) return ; c45 s #6  
mergeSort(data,temp,l,mid); }O7sP^  
mergeSort(data,temp,mid+1,r); )Xg5=zn$  
for(int i=l;i<=r;i++){ D(ItNMc Ku  
temp=data; ]}lt^7\=  
} Y>w7%N  
int i1=l; Fc@R,9  
int i2=mid+1; 5c3-?u!  
for(int cur=l;cur<=r;cur++){ YA,~qT|  
if(i1==mid+1) lND2Kb  
data[cur]=temp[i2++]; OC*28)  
else if(i2>r) z |llf7:  
data[cur]=temp[i1++]; 4 9N.P;b  
else if(temp[i1] data[cur]=temp[i1++]; Lo'pNJH;$  
else Oe1WnS 7(]  
data[cur]=temp[i2++]; KGM__ZO.  
} N<i5X.X  
} oaqH@`  
@U8u6JNK'  
} JWd[zJ[  
h"+7cc@  
改进后的归并排序: *Z"`g %,;  
dscah0T  
package org.rut.util.algorithm.support; H2BRI d  
P 9yMf~  
import org.rut.util.algorithm.SortUtil; %Zk6K!MY#  
OJpfiZ@Q_  
/** [TOo 9W  
* @author treeroot chL1r9V)v  
* @since 2006-2-2 iOg4(SPci  
* @version 1.0 ]uox ^HC  
*/ x3&gB`j-  
public class ImprovedMergeSort implements SortUtil.Sort { BzS4:e<  
E;CM"Y*  
private static final int THRESHOLD = 10; qZ^ PC-  
'wEQvCS  
/* <z\SKR[  
* (non-Javadoc) ]TT >3"Dw7  
* fYjmG[4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =xm7i#1  
*/ IWu=z!mO  
public void sort(int[] data) {  j5/pVXO  
int[] temp=new int[data.length]; x4_MbUe  
mergeSort(data,temp,0,data.length-1); ldUZ\z(*  
} s0dP3tz>  
iY/2 `R  
private void mergeSort(int[] data, int[] temp, int l, int r) { #4mRMsW5"  
int i, j, k; 3h:~NL  
int mid = (l + r) / 2; jzV"(p!  
if (l == r) 0YFXF  
return; 3[u- LYW  
if ((mid - l) >= THRESHOLD) lo>9 \ Po  
mergeSort(data, temp, l, mid); - $<oY88  
else ) n O ^Ay  
insertSort(data, l, mid - l + 1); }R<t=):  
if ((r - mid) > THRESHOLD) t9U6\ru  
mergeSort(data, temp, mid + 1, r); V?S}%-a  
else je^VJ&ac  
insertSort(data, mid + 1, r - mid); syB pF:`-W  
Lbrl CB+  
for (i = l; i <= mid; i++) { 7he,(V  
temp = data; ?@4Mt2Z\  
} AB/${RGf+  
for (j = 1; j <= r - mid; j++) { */h(4Hz  
temp[r - j + 1] = data[j + mid]; 3XlQ4  
} fE~KWLm  
int a = temp[l]; se %#U40*  
int b = temp[r]; |1!fuB A  
for (i = l, j = r, k = l; k <= r; k++) { ij0I!ilG4  
if (a < b) { g7]S  
data[k] = temp[i++]; U!q2bF<@  
a = temp; x t-s"A  
} else { @/kI;8  
data[k] = temp[j--]; ]:Ep1DIMl  
b = temp[j]; K9EHT-  
} >hNSEWMY`  
} n{!{,s  
} UCcr>  
Pg T3E  
/** +pqbl*W;1  
* @param data s 1M-(d Q  
* @param l 8<; .  
* @param i zK~8@{l}_"  
*/ 3R< r[3WP  
private void insertSort(int[] data, int start, int len) { ;GM`=M4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )1Bz0:  
} >KuNHuHu  
} {mD0 ug  
} #6\m TL4vg  
} fQib?g/G  
|iUF3s|?  
堆排序: C&Q[[k"kb  
c9[{P~y  
package org.rut.util.algorithm.support; :epBd3f  
U>*@VOgB  
import org.rut.util.algorithm.SortUtil; C '[4jz0xF  
F}l3\uC]  
/** |u%;"N'p)  
* @author treeroot aQ(P#n>a2  
* @since 2006-2-2 zqj|$YNC  
* @version 1.0 EwzcB\m  
*/ 1sg:8AA  
public class HeapSort implements SortUtil.Sort{ ,Dv*<La`\  
fGV'l__\\  
/* (non-Javadoc) 25Z} .))  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W]Xwt'ABz  
*/ %R4 \[e  
public void sort(int[] data) { DtBvfYO8)>  
MaxHeap h=new MaxHeap(); HR?T  
h.init(data); Wy-_}wqHg  
for(int i=0;i h.remove(); AAfU]4u0S  
System.arraycopy(h.queue,1,data,0,data.length); ,K}"o~z  
} 'yH  
&V+_b$  
private static class MaxHeap{ $&.(7F^D  
3_wR2AU~  
void init(int[] data){ EFDmNud`Q  
this.queue=new int[data.length+1]; [@qjy*5p  
for(int i=0;i queue[++size]=data; $A~aNI  
fixUp(size); ILDO/>n  
} &V axv$v}  
} !j7mY9x+  
AB%i|t  
private int size=0; " l|`LjP5M  
[H\0 '  
private int[] queue; r[ k  
<[ dt2)%L>  
public int get() { " TCJT390  
return queue[1]; h(kPf ]0  
} wclj9&k  
$'CS/U`E}  
public void remove() { r ts2Jk7f  
SortUtil.swap(queue,1,size--); <=|^\r !}&  
fixDown(1); 1:<n(?5JI  
} p}==aNZK  
file://fixdown "a;$uW@.6  
private void fixDown(int k) { 7@ONCG  
int j; j9c:SP5  
while ((j = k << 1) <= size) { q<.k:v&  
if (j < size %26amp;%26amp; queue[j] j++; U^[AW$WzU  
if (queue[k]>queue[j]) file://不用交换 i;~.kgtq4  
break; Ge=6l0  
SortUtil.swap(queue,j,k); U4dfO=  
k = j; Hj`'4  
} 9?sY!gXc  
} dCn9]cj/  
private void fixUp(int k) { n\ Lsm  
while (k > 1) { T] H 'l  
int j = k >> 1; 8)iI=,T*  
if (queue[j]>queue[k]) zytW3sTZA  
break; GBZu<t/  
SortUtil.swap(queue,j,k); m==DBh  
k = j; z+oy#p6+F.  
} 7~"eT9W V  
} i,~(_|-r  
GNHXtu6  
} V&j]*)  
])qnPoQ<n  
} PfYeV/M|  
]4c*Nh%8  
SortUtil: "MzBy)4Q  
A]QGaWK  
package org.rut.util.algorithm; jK\kASwG  
30w(uF  
import org.rut.util.algorithm.support.BubbleSort; ~~WY?I-  
import org.rut.util.algorithm.support.HeapSort; P;XA|`&  
import org.rut.util.algorithm.support.ImprovedMergeSort; #(}{*d R  
import org.rut.util.algorithm.support.ImprovedQuickSort; |2TH[J_a  
import org.rut.util.algorithm.support.InsertSort; )X*_oH=  
import org.rut.util.algorithm.support.MergeSort; c'?EI EP  
import org.rut.util.algorithm.support.QuickSort; "<egm^Yq  
import org.rut.util.algorithm.support.SelectionSort; ORX<ZO t1  
import org.rut.util.algorithm.support.ShellSort; 7^.g\Kt?  
Iw] ylp  
/** D)4#AI  
* @author treeroot n|.eL8lX.<  
* @since 2006-2-2 ^Hf?["m^@  
* @version 1.0 {LKW%G7  
*/ `:ZaT('h  
public class SortUtil { mV}8s]29  
public final static int INSERT = 1; ;x_T*} CH  
public final static int BUBBLE = 2; ;O>zA]Z8r  
public final static int SELECTION = 3; YJwI@E(l$  
public final static int SHELL = 4; 9^sz,auB  
public final static int QUICK = 5; /3Y"F"`M.  
public final static int IMPROVED_QUICK = 6; ~_CZ1  
public final static int MERGE = 7; HYdt3GtJ?  
public final static int IMPROVED_MERGE = 8; k;Qm%B  
public final static int HEAP = 9; "kc%d'c(  
0"\js:-$  
public static void sort(int[] data) { yHf^6|$8  
sort(data, IMPROVED_QUICK); {J)gS  
} rx#GrV*y  
private static String[] name={ Wxj(3lg/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Wl&6T1A`"  
}; +sZY0(|K8  
FD~uUZTM  
private static Sort[] impl=new Sort[]{ ~t*_  
new InsertSort(), _Nz?fJ:$@  
new BubbleSort(), Z~w?Qm:/  
new SelectionSort(), `]6W*^'PD  
new ShellSort(), c.-dwz  
new QuickSort(), 6~!7?FK  
new ImprovedQuickSort(), KCa @0  
new MergeSort(), um". Z4S  
new ImprovedMergeSort(), T.{]t6t$U  
new HeapSort() 9QF,ynE  
}; W^,p2  
Ly`.~t(~l  
public static String toString(int algorithm){ MnY}U",   
return name[algorithm-1]; !8 l &%  
} r;waT@&C  
{A MAQ  
public static void sort(int[] data, int algorithm) { A$zC$9{0I  
impl[algorithm-1].sort(data); ?56;<%0  
} s<C66z  
p)Ht =~  
public static interface Sort { F CfU=4O  
public void sort(int[] data); L?(1 [jB4G  
} T-oUcuQB  
]xV2= !J  
public static void swap(int[] data, int i, int j) { apxq] ! `  
int temp = data; &oVZ2.O#(  
data = data[j]; <&1hJ)O  
data[j] = temp; V22Br#+  
} f0{ tBD!%  
} up?S (.*B  
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