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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。 }gRLW2&mR>  
插入排序: L(P:n-^  
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package org.rut.util.algorithm.support; Mf13@XEo  
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import org.rut.util.algorithm.SortUtil; <U`Nb) &  
/** GJfNO-  
* @author treeroot 'c(Y")QP  
* @since 2006-2-2 ~cj:AIF  
* @version 1.0 ~0GX~{;r  
*/ @_ ZW P  
public class InsertSort implements SortUtil.Sort{ Jd6Q9~z#  
;OqLNfU3y  
/* (non-Javadoc) .T w F] v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vbh#[,lh  
*/ TEZqAR]G  
public void sort(int[] data) { <[l}^`IC^4  
int temp; ]JuB6o_L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pFRnPOv  
} p&doQh  
} `z`;eR2oX  
} k r^#B^  
n8aiGnd=v  
} "dOY_@kg  
S9+gVR8]C  
冒泡排序: Dq 4}VkY  
J&1N8Wk)  
package org.rut.util.algorithm.support; xi=uXxl  
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import org.rut.util.algorithm.SortUtil; a3IB, dr5P  
^@"f%3  
/** GhA~PjZS  
* @author treeroot Vzm7xl [  
* @since 2006-2-2 ZaindX{.1  
* @version 1.0 G)|HFcE  
*/ jF85bb$  
public class BubbleSort implements SortUtil.Sort{ S9055`v5  
)X$n'E  
/* (non-Javadoc) =DwH*U /YR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o;C)!  
*/ Qnh1s u5  
public void sort(int[] data) { HV(*6b@  
int temp; cNC BbOMr  
for(int i=0;i for(int j=data.length-1;j>i;j--){ r T$g^  
if(data[j] SortUtil.swap(data,j,j-1); -z1o~~  
} V t;&2v  
} >m{-&1Tx  
} v A~hkkj{  
} 7O :Gi*MA  
A1T;9`E  
} sJ()ItU5i  
~3]8f0^%m  
选择排序: [T|1Qq7  
)d Dmq  
package org.rut.util.algorithm.support; (:]iHg3  
WT N!2b  
import org.rut.util.algorithm.SortUtil; ,W;8!n0  
WLFzLW=PD  
/** XaSl6CH  
* @author treeroot >pHvBFa3G  
* @since 2006-2-2 3e1"5~?'<  
* @version 1.0 )+R3C%  
*/ HXo'^^}q;  
public class SelectionSort implements SortUtil.Sort { 5|z[%x~f  
$7g(-W  
/* ^@eCT}p{  
* (non-Javadoc) zxHfQ(  
* Y :BrAa[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mt0|`=64  
*/ mz '8  
public void sort(int[] data) { n&&y\?n  
int temp; g;@PEZk1  
for (int i = 0; i < data.length; i++) { ]TN}` ]  
int lowIndex = i; Q&{5.}L  
for (int j = data.length - 1; j > i; j--) { {'C74s  
if (data[j] < data[lowIndex]) { cn{l %6K  
lowIndex = j; JDlIf  
} `r LMMYD=  
} e#{L ~3  
SortUtil.swap(data,i,lowIndex); {.W%m  
} N?:S?p9R@  
} $% t  
%)]RM/e8  
} Rv o<ISp  
8yl /!O,v  
Shell排序: qIp`'.#m  
EB,>k1IJ  
package org.rut.util.algorithm.support; !{\c`Z<#  
Xu0*sQK  
import org.rut.util.algorithm.SortUtil; #y%Ao\~kG  
9a unv   
/** vS<e/e+  
* @author treeroot 2YQ$hL~  
* @since 2006-2-2 $ E6uA}s  
* @version 1.0 b2H6}s"=w  
*/ 9!h+LGs(,  
public class ShellSort implements SortUtil.Sort{ j+seJg<_  
)qe o`4+y  
/* (non-Javadoc) ;rbn/6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Btf)y'  
*/ qI:wm=  
public void sort(int[] data) { :#;?dMkTY  
for(int i=data.length/2;i>2;i/=2){ ) 'KHUa9  
for(int j=0;j insertSort(data,j,i); " OtLJ  
} Dr609(zg^  
} H*IoJL6  
insertSort(data,0,1); QB>e(j%  
} )vzT\dQ|  
@"0qS:s]X  
/** aleIy}"  
* @param data i"@?eq#h  
* @param j V;=T~K|)>  
* @param i !h\3cs`QU  
*/ ;?9~^,l  
private void insertSort(int[] data, int start, int inc) { kPe9G  
int temp; hz|$3*q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hJ :+*46  
} m? hX=  
} !JA63  
} 5+J/Qm8{bb  
~@bKQ>Xw  
} @VAhmYz  
 'M{_S  
快速排序: 7Ll(,i<,C  
dewu@  
package org.rut.util.algorithm.support; # L R[6l  
oR }  
import org.rut.util.algorithm.SortUtil; 2}A V_]]  
XDF" ,N)  
/** M?o`tWLhF  
* @author treeroot =O<BMq{d  
* @since 2006-2-2 vPi+8)  
* @version 1.0 }PJ:9<G y  
*/ 2ou?:5i  
public class QuickSort implements SortUtil.Sort{ ?{'Q}%  
CpXv?uU   
/* (non-Javadoc) mB\|<2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rX[R`,`>Z[  
*/ O%I'   
public void sort(int[] data) { *`W82V  
quickSort(data,0,data.length-1); bH&H\ Mx_k  
} 6SwHl_2%  
private void quickSort(int[] data,int i,int j){ JC-L80-  
int pivotIndex=(i+j)/2; lbY>R@5  
file://swap V SxLBwXf  
SortUtil.swap(data,pivotIndex,j); |V& k1{V  
2#^[`sFPO  
int k=partition(data,i-1,j,data[j]); P\R3/g  
SortUtil.swap(data,k,j); f]4gDmn^  
if((k-i)>1) quickSort(data,i,k-1);  E=E  
if((j-k)>1) quickSort(data,k+1,j); Vz^:| qON  
d=pq+  
} sC j3h  
/** -?[:Zn~$a  
* @param data -T>`PJpJuL  
* @param i Z.<B>MD8^  
* @param j MX34qJ9k  
* @return x]:mc%4-Z  
*/ s`{O-  
private int partition(int[] data, int l, int r,int pivot) { <8Ad\MU  
do{ Nuj%8om6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J_,y?}.e3  
SortUtil.swap(data,l,r); 8K qv)FjB  
} Vy biuP  
while(l SortUtil.swap(data,l,r); @ 9uwcM1F  
return l; 0|cQx VJb  
} 83h6>D b  
3yQ(,k#  
} t|/ /oEY  
I'!KWpYJT  
改进后的快速排序: _%x|,vo`(  
G100L}d"N  
package org.rut.util.algorithm.support; ;Wr$hDt^  
SWu=n1J.?H  
import org.rut.util.algorithm.SortUtil; 84k;d;  
Y9C]-zEv  
/** ~7*HZ:.  
* @author treeroot nV<YwqK  
* @since 2006-2-2 61]6N;kJ;  
* @version 1.0 QeK~A@|F&  
*/ jooh`| `P  
public class ImprovedQuickSort implements SortUtil.Sort { X,p&S^  
4):\,>%pK  
private static int MAX_STACK_SIZE=4096; Uc&0>_Z  
private static int THRESHOLD=10; 49CMRO,T  
/* (non-Javadoc) sx9 N8T3n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jN[Z mJz'  
*/ {W-PYHZ;  
public void sort(int[] data) { IJ!UKa*o%  
int[] stack=new int[MAX_STACK_SIZE]; e}kG1C8  
p7z#4 GW  
int top=-1; ), n?"  
int pivot; `VHm,g2  
int pivotIndex,l,r; .w0?  
DQ,QyV  
stack[++top]=0; EV9m\'=j  
stack[++top]=data.length-1; h"[ ][  
>IRo]-,  
while(top>0){ Ys\l[$_`*  
int j=stack[top--]; ,[A} 86  
int i=stack[top--]; JO _a+Yl  
% R'eV<  
pivotIndex=(i+j)/2; 2 `#|;x^<  
pivot=data[pivotIndex]; %j=7e@   
X/@Gx 4  
SortUtil.swap(data,pivotIndex,j); X%;,r 2g  
.AKx8=f  
file://partition 3M^ /   
l=i-1; [ML4<Eb+ x  
r=j; o;"!#Z 1SJ  
do{ *d@}'De{8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RE Hfk6YE  
SortUtil.swap(data,l,r); <-$4?}  
} Na#2sb[)  
while(l SortUtil.swap(data,l,r); HG Pbx$!  
SortUtil.swap(data,l,j); Tux~4W  
R^D~ic N  
if((l-i)>THRESHOLD){ Bq'hk<ns[  
stack[++top]=i; k(s3~S2h  
stack[++top]=l-1; xa K:@/  
} iJ~p X\FKO  
if((j-l)>THRESHOLD){ ?L_#AdK  
stack[++top]=l+1; *FO']D  
stack[++top]=j; &vLZj  
} 62.{8Uj  
7m1*Q@D  
} ek.L(n,J|  
file://new InsertSort().sort(data); ~ejHA~QC  
insertSort(data); Bs^W0K$uBO  
} 7%aB>uA  
/** %F03cI,  
* @param data py)V7*CgH  
*/ o'W &gkb9  
private void insertSort(int[] data) { $?0<rvGJ  
int temp; 1y 6H2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?Hq`*I?b9  
} '*K/K],S]  
}  ,5<-\"{]  
} H>M0G L  
>b/Yg:t  
} ym-212wl  
Hd4&"oeY  
归并排序: "ibKi=  
_c`Gxt%  
package org.rut.util.algorithm.support; P4s:wuJ^  
64[j:t=N  
import org.rut.util.algorithm.SortUtil; IUwY/R9Q  
lO<Ujb#"R  
/** ~aBALD0D;  
* @author treeroot o6'`W2P  
* @since 2006-2-2 bw+~5pqM  
* @version 1.0 GX(p7ZgB2  
*/ 7qu hp\  
public class MergeSort implements SortUtil.Sort{ wN;o++6V  
?"J5~_U.  
/* (non-Javadoc) >:8GU f*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^8B#-9Ph b  
*/ KWM.b"WnXr  
public void sort(int[] data) { nJrV  
int[] temp=new int[data.length]; oU67<jq  
mergeSort(data,temp,0,data.length-1); AM\`v'I*6  
} 1Hzj-u&N/  
ZcIwyh(`  
private void mergeSort(int[] data,int[] temp,int l,int r){ W)o-aX!P  
int mid=(l+r)/2; OfIml.  
if(l==r) return ; 5 '.j+{"  
mergeSort(data,temp,l,mid); !k Hpw2  
mergeSort(data,temp,mid+1,r); 6D) vY  
for(int i=l;i<=r;i++){ .,-t}5(VSq  
temp=data; p-M QI }  
} <^OGJ}G  
int i1=l; }[? X%=  
int i2=mid+1;  gryC#  
for(int cur=l;cur<=r;cur++){ mR?OSeeB  
if(i1==mid+1) R$wo{{KX  
data[cur]=temp[i2++]; 3]/w3|y  
else if(i2>r) t hTY('m  
data[cur]=temp[i1++]; izOtt^#DZt  
else if(temp[i1] data[cur]=temp[i1++]; t4 $cMf  
else 4WU 6CN  
data[cur]=temp[i2++]; Z-Zox-I1}-  
} ,253'53W)  
} !c'a<{d@  
k(!#^Mlz[  
} kC6J@t)  
BPtU]Bv-  
改进后的归并排序: ,}F{V>dhn  
enE8T3   
package org.rut.util.algorithm.support; /id(atiF^  
L~CwL  
import org.rut.util.algorithm.SortUtil; |Kh#\d  
bv-s}UP0  
/** ps^Z)x`GV  
* @author treeroot sYgpK92  
* @since 2006-2-2 PudwcP {  
* @version 1.0 ,\xeNUZd  
*/ 8.F]&D0p8  
public class ImprovedMergeSort implements SortUtil.Sort { ' !ZFK}  
T^%$  
private static final int THRESHOLD = 10; 02SFFqm  
$D<LND=o=  
/* _L<IxOZh+  
* (non-Javadoc) FNtcI7  
* 44]/rP_m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9^x'x@6  
*/ ['e8Xz0  
public void sort(int[] data) { e%u1O -*  
int[] temp=new int[data.length]; WR%x4\,d#  
mergeSort(data,temp,0,data.length-1); 0Evq</  
} fMP$o3;  
;WWUxrWif  
private void mergeSort(int[] data, int[] temp, int l, int r) { VYMs`d[  
int i, j, k; TlQu+w|  
int mid = (l + r) / 2; s^)wh v`C  
if (l == r) d>VerZZU  
return; ,FlF.pt  
if ((mid - l) >= THRESHOLD) #iJ+}EW _  
mergeSort(data, temp, l, mid); ;gP@d`s  
else XN'x`%!*3#  
insertSort(data, l, mid - l + 1); 2a 3i]e5Kt  
if ((r - mid) > THRESHOLD) s: ~3|D][  
mergeSort(data, temp, mid + 1, r); #0zMPh /U}  
else ej4xW~_  
insertSort(data, mid + 1, r - mid); 3 T+#d-\  
/:~mRf^  
for (i = l; i <= mid; i++) { _r^Cu.[7  
temp = data; y?zNxk/p  
} ZEiW\ V  
for (j = 1; j <= r - mid; j++) { S8TJnv`?'  
temp[r - j + 1] = data[j + mid]; ]9pK^<  
} $2~I-[  
int a = temp[l]; f4@>7K]9TA  
int b = temp[r]; 0V }knR.l  
for (i = l, j = r, k = l; k <= r; k++) { 'x$>h)t]  
if (a < b) { b<u   
data[k] = temp[i++]; CuR.a  
a = temp; 9|jk=`4UK  
} else { Z ^zUb  
data[k] = temp[j--]; Tky\W%Ag  
b = temp[j]; >j%HVRW  
} j,?>Q4G  
} TO ^}z  
} o4^rE<vJ  
%3M1zZY  
/** H.3+5 po  
* @param data A'^y+42jY  
* @param l 8vjaQ5  
* @param i D~P I_*h.  
*/ fo;Ftf0  
private void insertSort(int[] data, int start, int len) { no~hYy W2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5|._K(M  
} f5.rzrU  
} 60ccQ7=  
} #T &z`  
} qv>?xKSm  
wxYB-Wh<  
堆排序: $[x2L s~  
j-e/nZR@  
package org.rut.util.algorithm.support; |j3mI\ANF  
aY&He~  
import org.rut.util.algorithm.SortUtil; @8a1a3_F  
|1iCt1~U  
/** z~i=\/~tZ  
* @author treeroot Yx>y(Whu.  
* @since 2006-2-2 16Ym*kWIps  
* @version 1.0 V<A_c^unO  
*/ EdbL AagI6  
public class HeapSort implements SortUtil.Sort{ ;4tmnC>OnA  
M@ t,P?  
/* (non-Javadoc) > 1 {V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8FYcUvxfT  
*/ 8VxjC1v+  
public void sort(int[] data) { r\-Mj\$-  
MaxHeap h=new MaxHeap(); KjFNb;mM  
h.init(data); n#8N{ya5x1  
for(int i=0;i h.remove(); w7GF,a  
System.arraycopy(h.queue,1,data,0,data.length);  ;j|T#-.  
} O{:_-eI&d  
O4H %x  
private static class MaxHeap{ k<x  %  
fbgq+f`\  
void init(int[] data){ c 4xh  
this.queue=new int[data.length+1]; g b:)t }|  
for(int i=0;i queue[++size]=data; >T: Yp<  
fixUp(size); %P05k  
} 6P@3UQ)}s  
} s wgn( -  
G$FNofQx  
private int size=0; tai  
Hry*.s -  
private int[] queue; j[2?}?  
EA_6L\+8&  
public int get() {  o0t/  
return queue[1]; C QO gR GW  
} YbjeM6#E  
BIyNiol$AJ  
public void remove() { s2s}5b3  
SortUtil.swap(queue,1,size--); ZtG5vdf  
fixDown(1); 94Wf ]  
} rN* , U\q  
file://fixdown H%2Y8}  
private void fixDown(int k) { aM/sD=}  
int j; B^`'2$3  
while ((j = k << 1) <= size) { 5[NF  
if (j < size %26amp;%26amp; queue[j] j++; nW?DlECo?  
if (queue[k]>queue[j]) file://不用交换 T <J%|d .'  
break; woIcW  
SortUtil.swap(queue,j,k); 0=  ]RG  
k = j; U6SgV 8  
} 57W4E{A  
} mqPV Eo  
private void fixUp(int k) { ,2hZtJ<A  
while (k > 1) { ;`ZGiax  
int j = k >> 1; Id-?her>B  
if (queue[j]>queue[k]) V0y Q  
break; TXx%\V_6  
SortUtil.swap(queue,j,k); B]jI^( P  
k = j; >:7W.QLRU  
} _h;#\ )%~  
} j n[%@zD}  
V$e\84<  
} :$eg{IXC"  
haj\Dm  
} G+Vlaa/7  
>(>Fx\z}  
SortUtil: 1%W|>M`  
h!#!}|Q'  
package org.rut.util.algorithm; r2,AZ+4FP  
OFS` ?>  
import org.rut.util.algorithm.support.BubbleSort; ]u~6fknm  
import org.rut.util.algorithm.support.HeapSort; 6uWzv~!*D  
import org.rut.util.algorithm.support.ImprovedMergeSort; CH h]v.V  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ga o(3Y  
import org.rut.util.algorithm.support.InsertSort; /y2upu*!  
import org.rut.util.algorithm.support.MergeSort; sA6Ku(9  
import org.rut.util.algorithm.support.QuickSort; \g|u|Y.2[  
import org.rut.util.algorithm.support.SelectionSort; ;-Bi~XD  
import org.rut.util.algorithm.support.ShellSort; 9D 2B8t"a  
%\xwu(|kN  
/** yj]\%3o<Z7  
* @author treeroot c o}o$}  
* @since 2006-2-2 4.@gV/U(|  
* @version 1.0 I^'U_"vB  
*/ >we/#C"x  
public class SortUtil { [Tv!Pc  
public final static int INSERT = 1; 8!e1T,:b  
public final static int BUBBLE = 2; `a.1Af;L  
public final static int SELECTION = 3; ~i&Lc7Xl  
public final static int SHELL = 4; E2f9J{ Ki=  
public final static int QUICK = 5; ?<@yo&)  
public final static int IMPROVED_QUICK = 6; bY6y)l  
public final static int MERGE = 7; 5~WMb6/  
public final static int IMPROVED_MERGE = 8; Q{9#Am^6w  
public final static int HEAP = 9; \W73W_P&g  
H}KJd5A7  
public static void sort(int[] data) { !wl3}]q  
sort(data, IMPROVED_QUICK); (bP\_F5D  
} e%#8]$  
private static String[] name={ /W !A^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w`~j(G4N  
}; Rb_HD  
Epm'u[wV  
private static Sort[] impl=new Sort[]{ ;jb+x5t  
new InsertSort(), 'IrwlS  
new BubbleSort(), \ ]AsL&  
new SelectionSort(), [&mYW.O<  
new ShellSort(), J(&a,w>p  
new QuickSort(), kzs}U'U  
new ImprovedQuickSort(), m<ZwbD  
new MergeSort(), nLZT3`@~,  
new ImprovedMergeSort(), =\IcUY,4  
new HeapSort() VU>s{_|{  
}; mtEE,O!+  
*.ffyBI*~  
public static String toString(int algorithm){ ^FLuhLS\*  
return name[algorithm-1]; 7 R1;'/;  
} Z4#lZS`'A  
/uSEG<D  
public static void sort(int[] data, int algorithm) { 'WH@Zk/l  
impl[algorithm-1].sort(data); M5OH-'  
} w+vYD2 a  
d7o~$4h|  
public static interface Sort { kTQ`$V(>&  
public void sort(int[] data); 'ad|@Bh  
} h%kB>E~  
G7lC'~}  
public static void swap(int[] data, int i, int j) { N"~P` H![x  
int temp = data; 7QiJ1P.z  
data = data[j]; % ~%>3  
data[j] = temp; H9)$ #r6i  
} K%h83tm+  
} Q"]C" ?  
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