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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。 sp4J%2b  
插入排序: `mro2A  
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package org.rut.util.algorithm.support;  >:whNp  
K-&&%Id6R  
import org.rut.util.algorithm.SortUtil; =&QC&CqEi  
/** |s&jWM$  
* @author treeroot Ca[H<nyj  
* @since 2006-2-2 -2}-;|  
* @version 1.0 HS{a^c%  
*/ MP|J 0=H5  
public class InsertSort implements SortUtil.Sort{ [|ghq  
Ys@M1o  
/* (non-Javadoc) 0n25{N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?*i qg[:  
*/ mX78Av.z!  
public void sort(int[] data) { 1Ih.?7}  
int temp; *B 7+rd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T:ye2yg  
} <eU28M?\  
} h_K(8{1  
} q=bW!.#?  
0GR\iw$[J  
} 0MK|spc  
x0^O?UR  
冒泡排序: o9)pOwk7;  
|oq27*ix~m  
package org.rut.util.algorithm.support; #%CbZw@hJ9  
8(R%?> 8  
import org.rut.util.algorithm.SortUtil; 7 jq?zS|  
VUXG%511T  
/** w%=GdA=  
* @author treeroot 7XKPC+)1ya  
* @since 2006-2-2 )i&z!|/2  
* @version 1.0 Ha l,%W~e  
*/ Sa!r ,l  
public class BubbleSort implements SortUtil.Sort{ D}|PBR  
z=TaB^-)  
/* (non-Javadoc) e)dPv:oK3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V[-4cu,Ph^  
*/ ~b+TkPU   
public void sort(int[] data) { k=,,s(]tx  
int temp; B .p&,K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %} WSw~X  
if(data[j] SortUtil.swap(data,j,j-1); BZy&;P  
} hC ^|  
} 'P{0K?{H-4  
} Fy|tKMhnc  
} Jy)E!{#x  
J+f .r|?  
} %,$Ms?,n`  
m,nZrap  
选择排序: L(a&,cdh  
'Eds0"3  
package org.rut.util.algorithm.support; !'>(r K$  
"KQ3EI/g  
import org.rut.util.algorithm.SortUtil; QjH;'OVt  
x\t)uM%  
/** \F]X!#&+  
* @author treeroot &6fNPD(|  
* @since 2006-2-2 m(QGP\Ya  
* @version 1.0 ~_WsjD0O  
*/ [:gPp)f,  
public class SelectionSort implements SortUtil.Sort { /(C?3 }}L  
,bT|:T@ny  
/* O9OD[VZk  
* (non-Javadoc) 8hWB TUN  
* CJB   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cW B>  
*/ N9LBji;nH  
public void sort(int[] data) { ,at"Q$)T  
int temp; &$yC +cf  
for (int i = 0; i < data.length; i++) { ySP1,xq  
int lowIndex = i; <p"[jC2zF;  
for (int j = data.length - 1; j > i; j--) { ?sQOz[ig;  
if (data[j] < data[lowIndex]) { `N$:QWJ  
lowIndex = j; "Y(stRa  
} lz>YjK:  
} _t<&#D~  
SortUtil.swap(data,i,lowIndex); >ZMB}pt`  
} P" +!mSe^~  
} 06@^knm  
^Rr0)4ns  
} tL0<xGI5^  
V<~.:G$3H  
Shell排序: -dXlGOD+C  
~`'!nzP5H  
package org.rut.util.algorithm.support; :s8^nEK  
mQ 1)d5  
import org.rut.util.algorithm.SortUtil; DG& ({vy  
:1h1+b@,  
/** ~WH4D+  
* @author treeroot e~ #;ux  
* @since 2006-2-2 >TSPEvWc  
* @version 1.0 ,&>LBdG`  
*/ rQ~7BlE  
public class ShellSort implements SortUtil.Sort{ g)7~vm2/,  
)!+M\fT  
/* (non-Javadoc) up+W[#+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RTN?[`  
*/ 0V*B3V<  
public void sort(int[] data) { (Fc\*Vn  
for(int i=data.length/2;i>2;i/=2){ I'&#pOB  
for(int j=0;j insertSort(data,j,i); wf47Ulx  
} ^)$(Fe<  
} 12 y=Eh  
insertSort(data,0,1); Y ,1ZvUOB  
} ^PwZP;On  
3r{3HaN(^'  
/** a?Q\nu1  
* @param data l=EnK"aU  
* @param j cd_\?7  
* @param i q-7C7q  
*/ ;U7o)A;  
private void insertSort(int[] data, int start, int inc) { l%vX$Kw  
int temp; HEqTlnxUu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -Jqm0)2  
} bv %Bo4s  
} -D=J/5L#5  
} G]Rb{v,r  
.3xpDVW^e  
} ?D 8<}~Do  
9f UD68Nob  
快速排序: ;<=Z\NX  
Jo%`N#jG   
package org.rut.util.algorithm.support; K1`Z}k_p.  
PE!/n6  
import org.rut.util.algorithm.SortUtil; X#;n Gq)5  
;Fo%R$y  
/** G6W_)YL  
* @author treeroot \"]KF8c^_  
* @since 2006-2-2 Zv[D{  
* @version 1.0 &xhwx>C`K  
*/ '3%JhG)#  
public class QuickSort implements SortUtil.Sort{ u^6@!M  
G909R>  
/* (non-Javadoc) }~I(e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >(EC.ke  
*/ ko-3`hX`  
public void sort(int[] data) { w\V1pu^6@  
quickSort(data,0,data.length-1); ,=_)tX^  
} _ MsO2A  
private void quickSort(int[] data,int i,int j){ t`M4@1S"'  
int pivotIndex=(i+j)/2; K#"J8h;x  
file://swap _sp, ,gz  
SortUtil.swap(data,pivotIndex,j); ]et ]Vkg  
/D d.C<F  
int k=partition(data,i-1,j,data[j]); ?g{--'L  
SortUtil.swap(data,k,j); t4;eabZK  
if((k-i)>1) quickSort(data,i,k-1); %*}h{n  
if((j-k)>1) quickSort(data,k+1,j); N F$k~r  
LoUHStt  
} `p!&>,lrk  
/** Z Zs@P#]  
* @param data o*k.je1  
* @param i T\ *#9a  
* @param j GyC/39<P  
* @return @:dn\{Zsea  
*/ `w6*(t:T  
private int partition(int[] data, int l, int r,int pivot) { ]KQv ]'  
do{ qix$ }(P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "|Ke/0rGB  
SortUtil.swap(data,l,r); r*q  
} Z5j\ M  
while(l SortUtil.swap(data,l,r); adcH3rV  
return l; QkFB \v  
} &%UZ"CcA  
-Qy@-s $  
} H9\,;kM)  
uIy$| N  
改进后的快速排序: P5JE = &M  
=Lh8#>T\h  
package org.rut.util.algorithm.support; tP:ER  
dO1h1yJJ  
import org.rut.util.algorithm.SortUtil; FUP0X2P   
\wKnX]xGf  
/** .GSK!1{@  
* @author treeroot [;C|WTYSL  
* @since 2006-2-2 GI<3L K\  
* @version 1.0 b$eN]L   
*/ !X5LgMw^;  
public class ImprovedQuickSort implements SortUtil.Sort { N79?s)l:K  
!gm@QO cF  
private static int MAX_STACK_SIZE=4096; zNO,vR[\  
private static int THRESHOLD=10; hcqg94R#_  
/* (non-Javadoc) zcy`8&{A<?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pil_zQ4  
*/ o?g9Grk  
public void sort(int[] data) { Z?<&@YQS  
int[] stack=new int[MAX_STACK_SIZE]; [k]3#<sS  
3s0 I<cL  
int top=-1; *=}\cw\A  
int pivot; IvX+yU  
int pivotIndex,l,r; :'4 ",  
FN<S agj  
stack[++top]=0; +,_%9v?3  
stack[++top]=data.length-1; Gn%"B6  
V6bjVd9|Z  
while(top>0){ z?Cez*.h>  
int j=stack[top--]; J)EL<K$Z[  
int i=stack[top--]; p=[SDk`  
6IJH%qUx'  
pivotIndex=(i+j)/2; 2@!B;6*8q  
pivot=data[pivotIndex]; z+K1[1SM  
YCq:]  
SortUtil.swap(data,pivotIndex,j); gh-i| i,  
-Rwx`=6tV  
file://partition $q##Tys  
l=i-1; iHT=ROL  
r=j; &a+=@Z)kf  
do{ d5"rCd[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); d[YG&.}+8j  
SortUtil.swap(data,l,r); y7Nd3\v [\  
} H@te!EE  
while(l SortUtil.swap(data,l,r); 2v<O}   
SortUtil.swap(data,l,j); B2Kh~Xd  
O Cn  ra  
if((l-i)>THRESHOLD){ `PT'Lakf;3  
stack[++top]=i; A*{CT>  
stack[++top]=l-1; 4>Y*owa4  
} m7u" awM^  
if((j-l)>THRESHOLD){ 9w6 uoM  
stack[++top]=l+1; nE56A#,Q,  
stack[++top]=j; {(l,Uhxl""  
} mRy0zN>?  
(3Z;c_N  
} dwouw*8  
file://new InsertSort().sort(data); Svdmg D!  
insertSort(data); ,Fn-SrB:  
} yG^pND>_df  
/** #itZ~tol  
* @param data \x|8  
*/ ^mouWw)a_  
private void insertSort(int[] data) { DUwms"I,%  
int temp; FQ0PXYh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .vie#,la  
} {$V2L4  
} o?^Rw*u0/  
} y[zjs^-vCv  
HP\5gLVXY  
} C#B|^A_  
_}cD_$D  
归并排序: TkVqv v  
I]%Kd('  
package org.rut.util.algorithm.support; A1*\ \[  
vnS8N  
import org.rut.util.algorithm.SortUtil; viJP6fh  
!="8ok+  
/** EMDYeXpV  
* @author treeroot  `fE'$2  
* @since 2006-2-2 -e>Z!0  
* @version 1.0 xW7[VTXc^  
*/ d5`D[,]d  
public class MergeSort implements SortUtil.Sort{ #N;&^El  
fYW9Zbov-  
/* (non-Javadoc) 8T[<&<^-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r`pf%9k  
*/ _h 6c[*  
public void sort(int[] data) { v57<b&p26  
int[] temp=new int[data.length]; Mcq!QaO}&  
mergeSort(data,temp,0,data.length-1); IZGRQmi"  
} nTD4^'  
]^Xj!01~  
private void mergeSort(int[] data,int[] temp,int l,int r){ D/=k9[b!  
int mid=(l+r)/2; 7-0j8$`  
if(l==r) return ; B4 5#-V  
mergeSort(data,temp,l,mid); u\"/EaQ{  
mergeSort(data,temp,mid+1,r); /} h"f5  
for(int i=l;i<=r;i++){ 4aW[`  
temp=data; } 7ND] y48  
} 4dm0:, G  
int i1=l; |9p0"#4u  
int i2=mid+1; -<sW`HpD'  
for(int cur=l;cur<=r;cur++){ c?KIHZ0  
if(i1==mid+1) 3`)ej`  
data[cur]=temp[i2++]; oS}fr?  
else if(i2>r) Q- w_ @~  
data[cur]=temp[i1++]; jfVw{\l  
else if(temp[i1] data[cur]=temp[i1++]; ZAn9A>5_  
else bnPhhsR  
data[cur]=temp[i2++]; ))nTd=  
} .8GXpt^U(  
} Ypxp4B  
\cf'Hj}  
} gI"cZ h3}  
awjAv8tPO!  
改进后的归并排序: '&2-{Y [!  
n&a\mGF  
package org.rut.util.algorithm.support; @= =)  
URt+MTU[  
import org.rut.util.algorithm.SortUtil; H/.UDz  
7#Uzz"^  
/** E25w^x2  
* @author treeroot Rg+# (y  
* @since 2006-2-2 1=C<aRZ b^  
* @version 1.0 Mz86bb^J  
*/ WF_QhKW|k  
public class ImprovedMergeSort implements SortUtil.Sort { j ,lI\vw<  
8EX?/33$  
private static final int THRESHOLD = 10; >3~)2)Q  
%NTJih`  
/* ,el[A`b  
* (non-Javadoc) DrbjklcUU  
* fVVD}GM=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =BJe}AV  
*/ )heHERbJ  
public void sort(int[] data) { SoHaGQox  
int[] temp=new int[data.length]; ZLdIEBi=  
mergeSort(data,temp,0,data.length-1); `%EcQ}Nr  
} UX<)hvKj  
_ n1:v~  
private void mergeSort(int[] data, int[] temp, int l, int r) { D;jbZ9  
int i, j, k; #!%zf{(C+  
int mid = (l + r) / 2; JfK4|{@  
if (l == r) EJQT\c  
return; L6;'V5Mg72  
if ((mid - l) >= THRESHOLD) }qWB=,8HQ  
mergeSort(data, temp, l, mid); ~*UY[!+4^=  
else  WK@<#  
insertSort(data, l, mid - l + 1); ?Zk;NL9  
if ((r - mid) > THRESHOLD) Y>ATL  
mergeSort(data, temp, mid + 1, r); td23Z1Elk#  
else WwWCN N~}  
insertSort(data, mid + 1, r - mid); (<-m|H};  
'5~l{3Lw  
for (i = l; i <= mid; i++) { H* +7{;$  
temp = data; jW-;Y/S  
} ^tI&5S]nE  
for (j = 1; j <= r - mid; j++) { 4x3 _8/=  
temp[r - j + 1] = data[j + mid]; t}?-ao  
} b!`Ze~V  
int a = temp[l]; q">}3`k  
int b = temp[r]; bNiJ"k<pN  
for (i = l, j = r, k = l; k <= r; k++) { Q<ia  
if (a < b) { 9zrTf%m F  
data[k] = temp[i++]; j]]5&u/l  
a = temp; H*P+>j&  
} else { (TO<SY3AB  
data[k] = temp[j--]; $J,$_O6  
b = temp[j]; :nc%:z=O  
} z"QXPIXPk  
} B., BP  
} m_BpY9c]5  
[p}~M-$V8Y  
/** ;OD-?bC  
* @param data {;zHkmx  
* @param l }9#GJ:x`  
* @param i d6 -q"  
*/ 81(\8#./  
private void insertSort(int[] data, int start, int len) { Wa.!eAe}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'zT7$ .L  
} J^%E$ s  
} UvB\kIH  
} s*Z yr%R  
} !?Y71:_!  
4;gw&sFF  
堆排序: Qz%q#4Zb  
(x.qyYEoI  
package org.rut.util.algorithm.support; ,# .12Q!  
jUR* |  
import org.rut.util.algorithm.SortUtil; riaL[4c  
<S6?L[_  
/** :?m"kh ~  
* @author treeroot ~i'!;'-_}  
* @since 2006-2-2 R~hIoaiN  
* @version 1.0 (b&Z\?"  
*/ 4e; le&  
public class HeapSort implements SortUtil.Sort{ M(C}2.20  
W$J.B!O  
/* (non-Javadoc) zcH"Kh&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B9cWxe4R#  
*/ {TMng&  
public void sort(int[] data) { DAORfFG74  
MaxHeap h=new MaxHeap(); Z("N *`VP;  
h.init(data); DW:\6k  
for(int i=0;i h.remove(); I69Z'}+qz  
System.arraycopy(h.queue,1,data,0,data.length); T?.l_"%%d  
} ZC<EPUV(  
-~4kh]7%  
private static class MaxHeap{ V$Oj@vI  
lb=fS%  
void init(int[] data){ M\7F1\ X  
this.queue=new int[data.length+1]; Nt?=0X|M  
for(int i=0;i queue[++size]=data; lU&2K$`  
fixUp(size); .Zs.O/  
} 1<lf o^B  
} |o(te  
)-}<}< oO  
private int size=0; +2Aggv>*  
aYHs35  
private int[] queue; HL>l.IG?  
;<E?NBV^  
public int get() { Fy$ C._C$  
return queue[1]; 7*Zm{r@u  
} |Dq?<Ha  
r8czDc),b  
public void remove() { Zc&pJP+M'U  
SortUtil.swap(queue,1,size--); Bqk+ne  
fixDown(1); ?hIDyM  
} %P#| }  
file://fixdown =>A}eR1Y   
private void fixDown(int k) { p#r qe<Ua  
int j; G2@'S&2@s  
while ((j = k << 1) <= size) { HyYJ"54  
if (j < size %26amp;%26amp; queue[j] j++; 7/BjWU5*  
if (queue[k]>queue[j]) file://不用交换 ,MHF  
break; [<f9EeziB  
SortUtil.swap(queue,j,k); ?A*<Z%}1?  
k = j; G#uB%:)&0u  
} BuC\Bd^0  
} r]~]-VZ/  
private void fixUp(int k) { .O+,1&D5  
while (k > 1) { pB%oFWqK  
int j = k >> 1; 3qV\XC+  
if (queue[j]>queue[k]) $h=v ;1"  
break; 0YoV`D,U  
SortUtil.swap(queue,j,k); RgM=g8}M  
k = j; mU||(;I  
} n4H'FZ  
} a/%qn-i|p  
g(Oor6Pp  
} ZHoYnp-~z  
, BZ(-M  
} 6W;`}'ap  
{5+69&:G.  
SortUtil: 2G3Hi;q18  
wg:\$_Og  
package org.rut.util.algorithm; c <Q*g  
E2S#REB4  
import org.rut.util.algorithm.support.BubbleSort; =i/ r:  
import org.rut.util.algorithm.support.HeapSort; C}9|e?R[Rz  
import org.rut.util.algorithm.support.ImprovedMergeSort; jOK !k  
import org.rut.util.algorithm.support.ImprovedQuickSort; AOTtAV_e  
import org.rut.util.algorithm.support.InsertSort; ~1S,[5u|s  
import org.rut.util.algorithm.support.MergeSort; X%7l! k[  
import org.rut.util.algorithm.support.QuickSort; L,,*8  
import org.rut.util.algorithm.support.SelectionSort; 5.kKg=a  
import org.rut.util.algorithm.support.ShellSort; Uqly|FS &n  
`sd H q  
/** )M7~RN  
* @author treeroot v Et+^3=  
* @since 2006-2-2 Q,ZV C  
* @version 1.0 rK'O 85)eU  
*/ ;9Wimf]G,E  
public class SortUtil { Pb59RE:7V  
public final static int INSERT = 1; W3R43>$  
public final static int BUBBLE = 2; IZd~Am3f  
public final static int SELECTION = 3; 3B$|B,  
public final static int SHELL = 4; J DOs.w  
public final static int QUICK = 5; b,(<74!#8  
public final static int IMPROVED_QUICK = 6; I3}I7oc_  
public final static int MERGE = 7; w.=rea~  
public final static int IMPROVED_MERGE = 8; W&&C[@Jd3  
public final static int HEAP = 9; ^Q!A4 qOQ  
U\[b qw  
public static void sort(int[] data) { v,iq,p)&  
sort(data, IMPROVED_QUICK); F C=N}5u  
} #X?E#^6?E  
private static String[] name={ F9q!Upr_+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zq|NltK  
}; jgfr_"@A  
;9vY5CxzC  
private static Sort[] impl=new Sort[]{ SkU9iW(k  
new InsertSort(), h +9~^<oFl  
new BubbleSort(), @U =~ c9  
new SelectionSort(), [Z!oVSCZD%  
new ShellSort(), \+C0Rv^^  
new QuickSort(), pM*( kN  
new ImprovedQuickSort(), 2>Qy*  
new MergeSort(),  D28>e  
new ImprovedMergeSort(), +zl [C  
new HeapSort() $3eoZ1q'U-  
}; X*&Thmee  
+\>op,_9I  
public static String toString(int algorithm){ ?0 7}\N0~  
return name[algorithm-1]; <J.q[fd1*  
} w)/~Gn676  
&Cr4<V6-q  
public static void sort(int[] data, int algorithm) { n6C!5zq7U  
impl[algorithm-1].sort(data); "Sw raq  
} j%8 1q  
LFvZ 7M\\  
public static interface Sort { !=6\70lJ  
public void sort(int[] data); RE08\gNIt  
} VaO[SW^  
[Y^h)k{-$  
public static void swap(int[] data, int i, int j) { Qp>Z&LvC5  
int temp = data; y QGd<(  
data = data[j]; A5sz[k  
data[j] = temp; 9A9T'g)Du  
} &{ZUY3  
} 2_)gJ_kP  
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