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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。 uF ;8B]"  
插入排序: </B:Zjn  
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package org.rut.util.algorithm.support; ac,<+y7A  
o4^#W;%w  
import org.rut.util.algorithm.SortUtil; .zy2_3:  
/** cpPS8V  
* @author treeroot b)>l7nOc  
* @since 2006-2-2 \'X-><1  
* @version 1.0 9 ge'Mo  
*/ u= Ga}  
public class InsertSort implements SortUtil.Sort{ R2qz>kyyB  
C,8@V`  
/* (non-Javadoc) S#0C^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bw<$fT`  
*/ /VFQbJ+`  
public void sort(int[] data) { H? %I((+  
int temp; + jN)$Y3Ya  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +O1=Ao  
} 8}X>u2t  
} ug/P>0  
} qL$\[(  
2h) *  
} R0yp9icS  
'N&s$XB,  
冒泡排序: BA9;=orx  
%+dRjG~TB  
package org.rut.util.algorithm.support; #UnGU,J  
"/x/]Qx2  
import org.rut.util.algorithm.SortUtil; ()fYhk|W  
Q@TeU#2Y  
/** ;`Sn66&  
* @author treeroot .4!wp&  
* @since 2006-2-2 q#0yu"<  
* @version 1.0 ?#:!!.I:  
*/ h  m(  
public class BubbleSort implements SortUtil.Sort{ ;?gR,AKZ  
aSeh?2n8  
/* (non-Javadoc) 9x14I2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OSK:Cb.-?F  
*/ Zf?jnDA  
public void sort(int[] data) { ]Gl5Qf:+z  
int temp; [5]* Be  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _2<k,Dl;RY  
if(data[j] SortUtil.swap(data,j,j-1); ?`B6I!S0[  
} WhL"-f  
} 602=qb  
} pS!N<;OWr  
} YY$O"!."  
} d7o-  
} ~gEd (  
qjRp5  
选择排序: af/;Dr@  
\U?{m)N  
package org.rut.util.algorithm.support; <h~_7Dn  
:5zO!~\  
import org.rut.util.algorithm.SortUtil; zQtx!k=  
n(\VP!u5r  
/** M,eq-MEK  
* @author treeroot e pAC%a  
* @since 2006-2-2 f q*V76F  
* @version 1.0 !?m8UE  
*/ p|=0EWo4U  
public class SelectionSort implements SortUtil.Sort { t<qXXQ&5  
lJ<( mVt  
/* .7H* F9  
* (non-Javadoc) ":Pfi!9Wl  
* i'0ol^~y6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pB79#4  
*/ !xD_=O  
public void sort(int[] data) { +'D #VG  
int temp; +C(/.X Kz%  
for (int i = 0; i < data.length; i++) { (a8oI )~  
int lowIndex = i; u=B,i#>s  
for (int j = data.length - 1; j > i; j--) { bhT:MW!  
if (data[j] < data[lowIndex]) { !%YV0O0  
lowIndex = j; 7A>glZ/x  
} =A^VzIj(  
} y7#vH<  
SortUtil.swap(data,i,lowIndex); zC$(/nZ  
} iLkP@OYgQ  
} +tFl  
qgsKbsl  
} 2<+9lk  
+DP{_x)t  
Shell排序: q0QB[)AP  
V: ivnx*  
package org.rut.util.algorithm.support; MXuiQ;./  
0t}&32lL&  
import org.rut.util.algorithm.SortUtil; jiAN8t*P  
<7sGA{  
/** 4O3-PU>N  
* @author treeroot u:&Lf  
* @since 2006-2-2 W RVm^  
* @version 1.0 ]+i~Cbj  
*/ hlTM<E  
public class ShellSort implements SortUtil.Sort{ cXvq=Rb  
@C6.~OiP  
/* (non-Javadoc) W%cJ#R[o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <f`G@  
*/ 421ol  
public void sort(int[] data) { [P746b_\e  
for(int i=data.length/2;i>2;i/=2){ nc.X+dx:  
for(int j=0;j insertSort(data,j,i); j]5bs*G  
} ) %&~CW+  
} &\GB_UA  
insertSort(data,0,1); :*/`"M)'  
} V3$Yr"rZ;  
-.X-02  
/** }e*OprF  
* @param data l>O~^41[  
* @param j pe$l'ur  
* @param i ri k0F  
*/ 7B,a xkr  
private void insertSort(int[] data, int start, int inc) { ~1v5H]T{  
int temp; m|w-}s,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UMbM3m=\  
} G\1\L*+0  
} ("B[P/  
} %0!!998  
yk| < P\  
} gK8{=A0c  
/&#Gh?z  
快速排序: Qs5^kddz=  
:v!e8kM\x  
package org.rut.util.algorithm.support; .v{ok,&  
G&HCOR!h  
import org.rut.util.algorithm.SortUtil; >3a<#s{%  
]e+88eQ  
/** LJ Aqk2k  
* @author treeroot tmJ-2  
* @since 2006-2-2 s8/y|HN^  
* @version 1.0 9zKrFqhNo  
*/ 58@YWv Ak  
public class QuickSort implements SortUtil.Sort{ plRBfw>]N  
S3iXG @  
/* (non-Javadoc) %cl=n!T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :"9P {xe^  
*/ AD=vYDR+  
public void sort(int[] data) { _Fz]QxO  
quickSort(data,0,data.length-1); K*_5M  
} pp#xN/V#a  
private void quickSort(int[] data,int i,int j){ V9 dRn2- [  
int pivotIndex=(i+j)/2; #Jo#[-r  
file://swap 3S~Gi,  
SortUtil.swap(data,pivotIndex,j); /uM;g9 m  
|ZAR!u&0  
int k=partition(data,i-1,j,data[j]); Az}.Z'LJ  
SortUtil.swap(data,k,j); '518S"T @  
if((k-i)>1) quickSort(data,i,k-1); 4iD-jM_D  
if((j-k)>1) quickSort(data,k+1,j);  TM1isZ  
,u1Yn}  
} <:mV^tK  
/** W'BB FG  
* @param data (|EnRk-E  
* @param i gxIGL-1M  
* @param j s^{hdCCl67  
* @return 1gwnG&  
*/ I$Bu6x!  
private int partition(int[] data, int l, int r,int pivot) { G>/Gw90E  
do{ 0GtL6M@pP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zF9SZ#{a  
SortUtil.swap(data,l,r); (|<e4HfZL  
} 3~I|KF7x  
while(l SortUtil.swap(data,l,r); }Ss]/ _t  
return l; *f[nge&.  
} O]\6Pv@N  
SM;*vkwz~  
} *v}8n95*2  
mIK-a{?G  
改进后的快速排序: 6QwVgEnSf  
H\Y5Fd9)  
package org.rut.util.algorithm.support; /!l$Y?  
eD4qh4|u.  
import org.rut.util.algorithm.SortUtil; #mI{D\UR  
4&}V3"lg  
/** Z r}5)ZR.  
* @author treeroot xpJ6M<O{8  
* @since 2006-2-2 yMU>vr  
* @version 1.0 [z2XK4\e1T  
*/ |\?mX=a.y  
public class ImprovedQuickSort implements SortUtil.Sort { TY(B]Q_o  
^PnXnH?  
private static int MAX_STACK_SIZE=4096; iYqZBLf{S  
private static int THRESHOLD=10;  I~'%  
/* (non-Javadoc) KW* 2'C&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wchu-]  
*/ #JmVq-)  
public void sort(int[] data) { c>_tV3TDA  
int[] stack=new int[MAX_STACK_SIZE]; D5o[z:V7"  
vD=>AAvG  
int top=-1; k$u\\`i]oC  
int pivot; \3M<_73  
int pivotIndex,l,r; JHxy_<p/  
a.n;ika]-  
stack[++top]=0; UlG8c~p  
stack[++top]=data.length-1; uwQ~4   
m#}41<  
while(top>0){ zTgY=fuz  
int j=stack[top--]; 'qL:7  
int i=stack[top--]; !cLdoX  
n~1F[ *  
pivotIndex=(i+j)/2; |WiE`&?xP  
pivot=data[pivotIndex]; DzfgPY_Py  
?IKSSe#,  
SortUtil.swap(data,pivotIndex,j); q*L>MV  
TY."?` [FK  
file://partition jGg,)~)Y  
l=i-1; N\,[(LbA&  
r=j; b^*9m PP  
do{ 8 #m,TOp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L}~"R/iWCT  
SortUtil.swap(data,l,r); o1kTB&E4B  
} R[C+?qux  
while(l SortUtil.swap(data,l,r); 4YuJ-  
SortUtil.swap(data,l,j); jR1o<]?  
q9e(YX>  
if((l-i)>THRESHOLD){ q,i&%  
stack[++top]=i; KKBrw+)AJ  
stack[++top]=l-1; |r U?  
} #r=Jc8J_  
if((j-l)>THRESHOLD){ TANv)&,|9  
stack[++top]=l+1; 8a,uM :  
stack[++top]=j; j8cIpbp8x  
} syJLcK+e  
lm;Dy*|<  
} y*G3dWb  
file://new InsertSort().sort(data); `rLcJcW  
insertSort(data); H[S}&l\D4  
} R)@2={fd}  
/** K2XRKoG  
* @param data NJNS8\4  
*/ Y>/T+ub  
private void insertSort(int[] data) { P<%}!Y  
int temp; 2;wp D2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rAn:hR{  
} wit rC>  
} jIL+^{K<  
} O .ESI  
n5DS  
} 5%_aN_1?ef  
Y&XO:jB  
归并排序: t/wo G9N  
S8j!?$`  
package org.rut.util.algorithm.support; :>|dE%/e$  
kl~)<,/@  
import org.rut.util.algorithm.SortUtil; w;{=  
gkM Q=;Nn  
/** 2il`'X  
* @author treeroot EKD?j  
* @since 2006-2-2 1K UM!DUD  
* @version 1.0 +SB>>  
*/ 68UfuC  
public class MergeSort implements SortUtil.Sort{ `0_,>Z  
8345 H  
/* (non-Javadoc) Yyr qO^9m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \8Hs[H!  
*/ }`$s"Iv@  
public void sort(int[] data) { ~m'8<B5+  
int[] temp=new int[data.length]; T,oZaJ<  
mergeSort(data,temp,0,data.length-1); N>H#Ew@2U  
} |@1M'  
;u-[%(00S  
private void mergeSort(int[] data,int[] temp,int l,int r){ Z[9t?ePL  
int mid=(l+r)/2; ^OOoo2  
if(l==r) return ; iG ,z3/~v  
mergeSort(data,temp,l,mid); 6U0BP  
mergeSort(data,temp,mid+1,r); :4r{t?ytXw  
for(int i=l;i<=r;i++){ >B<#,G  
temp=data; ]6 HR  
} q@^^jlHP  
int i1=l; *iN5/w{VG  
int i2=mid+1; VaW^;d#  
for(int cur=l;cur<=r;cur++){ ? Rk[P cX<  
if(i1==mid+1) jL7r1pu5  
data[cur]=temp[i2++]; rEMe=>^   
else if(i2>r) P6I<M}p  
data[cur]=temp[i1++]; +MqJJuWB  
else if(temp[i1] data[cur]=temp[i1++]; 6)PnzeYW  
else <L('RgA@X  
data[cur]=temp[i2++]; ([dwZ6$/J  
} y`i?Qo3  
} :}R,a=N  
m5o$Dus+?'  
} /9A6"Z  
[4hi/6 0  
改进后的归并排序: ~"\WV4}`v  
l;r A}?,.^  
package org.rut.util.algorithm.support; P }^Y"zF2  
&ty-aB=F  
import org.rut.util.algorithm.SortUtil; EOZ 6F-':  
w~q ]&  
/** >,QCKZH  
* @author treeroot FUXJy{n6"2  
* @since 2006-2-2 ))dw[Xa  
* @version 1.0 yEos$/*u-N  
*/ jz~#K;3=,  
public class ImprovedMergeSort implements SortUtil.Sort { Ai"MJ6)  
pss e^rFg  
private static final int THRESHOLD = 10; m] yUcj{F  
73B[|J*  
/* )4h|7^6ji  
* (non-Javadoc) !Eg2#a?  
* P3IBi_YyG1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t Davp:M1v  
*/ NJSbS<O  
public void sort(int[] data) { Fe %Vp/  
int[] temp=new int[data.length]; 8f1M6GK?  
mergeSort(data,temp,0,data.length-1); teI?.M9r  
} C4qK52'2s  
c&P/v#U_  
private void mergeSort(int[] data, int[] temp, int l, int r) { k& uh  
int i, j, k; s)fahc(@E  
int mid = (l + r) / 2; ;5.<M<PH  
if (l == r) LEOri=?RF  
return; ?A3u2-  
if ((mid - l) >= THRESHOLD) OSfT\8YA  
mergeSort(data, temp, l, mid); 5]up%.  
else {8qcM8  
insertSort(data, l, mid - l + 1); 7M _ mR Vh  
if ((r - mid) > THRESHOLD) .zl[nx[9"D  
mergeSort(data, temp, mid + 1, r); }K@m4`T  
else P(FlU]q  
insertSort(data, mid + 1, r - mid); "O-X*>?f  
SSCs96  
for (i = l; i <= mid; i++) { ul~6zBKO   
temp = data; b !y  
} |5%T)  
for (j = 1; j <= r - mid; j++) { n$XEazUb0N  
temp[r - j + 1] = data[j + mid]; Wz #Cyjo  
} /t`,7y 3T  
int a = temp[l]; ?hGE[.(eh]  
int b = temp[r]; NP\mzlI~@  
for (i = l, j = r, k = l; k <= r; k++) { =4'V}p  
if (a < b) { KO7&dM  
data[k] = temp[i++]; +lfO4^V  
a = temp; -.y1]4  
} else { ,}]v7DD  
data[k] = temp[j--]; :*&c'  
b = temp[j]; n?$c"}  
} W7'<Jom|?  
} ?>U=bA  
} dt@c,McN|Q  
{Q37a=;,  
/** j5Da53c#^  
* @param data 9PA<g3z  
* @param l M49l2x=]9  
* @param i K:jn^JN$  
*/ ^\Z+Xq1~/  
private void insertSort(int[] data, int start, int len) { AEaN7[PQx|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |hw.nY]J  
} 3~bB2APk  
} yyljyE  
} [520!JhZY  
} U;WwEta ]  
jd-ccnR l  
堆排序: Ky"F L   
Z#Kf%x.  
package org.rut.util.algorithm.support; h'};spv  
Q&vdBO/  
import org.rut.util.algorithm.SortUtil; J<+ f7L  
?RS:I%bL  
/** z`t~N  
* @author treeroot {pH#zs4Y  
* @since 2006-2-2 d1\nMm}v  
* @version 1.0 G 3,v'D5  
*/ ssx#|InY  
public class HeapSort implements SortUtil.Sort{ K$Vu[!l`  
c'tQA  
/* (non-Javadoc) eK l; T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hXth\e\[{`  
*/ u%e~a]  
public void sort(int[] data) { 3.?be.cq  
MaxHeap h=new MaxHeap(); &l7E|.JE  
h.init(data); KS93v9|  
for(int i=0;i h.remove(); 6QY;t:/<  
System.arraycopy(h.queue,1,data,0,data.length); kMurNA=  
} Uzzm2OS`  
|&JeJ0k>~  
private static class MaxHeap{ ciN\SA ZY  
96<oX:#  
void init(int[] data){ Ve|:k5z  
this.queue=new int[data.length+1]; p__wBUB  
for(int i=0;i queue[++size]=data; \H:T)EVy  
fixUp(size); -)oUb=Lk{  
} \alV #>J5  
} >*h+ N? m  
W6i{ yne W  
private int size=0; bg-/ 8,  
Dho6N]86r  
private int[] queue; i cTpx#|=  
iO5g30l  
public int get() { dREY m}1  
return queue[1]; hA 5')te<  
} k*fU:q1  
WM ?a1j  
public void remove() { *"8Ls0!  
SortUtil.swap(queue,1,size--); 9%T"W  
fixDown(1); {:uv}4Z  
} 1Y'4 g3T  
file://fixdown 5F~l;zT  
private void fixDown(int k) { v>} +->f  
int j; Blzvn19'h  
while ((j = k << 1) <= size) { '^_u5Y]  
if (j < size %26amp;%26amp; queue[j] j++; NgGMsE\C}  
if (queue[k]>queue[j]) file://不用交换 !="q"X /*  
break; -Y/i h(I^  
SortUtil.swap(queue,j,k); +n;nvf}(  
k = j; lJu^Bcrv  
} 7amVnR1f  
} Om0$6O  
private void fixUp(int k) { pVy=rS-  
while (k > 1) { WZNq!K H  
int j = k >> 1; Cr7Zi>sd<!  
if (queue[j]>queue[k]) !Rl|o^Vw>{  
break; oM~y8O  
SortUtil.swap(queue,j,k); =9a2+v0  
k = j; 8mreHa  
} :9UgERjra  
} t Y  
/=/Ki%hh  
} =WY'n l'  
w I_@  
} _K~h? \u  
AYA{_^#+3  
SortUtil: $5&%X'jk  
#,d~t  
package org.rut.util.algorithm; uPz+*4+  
}~I!'J#)  
import org.rut.util.algorithm.support.BubbleSort; c}o 6Rm50  
import org.rut.util.algorithm.support.HeapSort; D9oNYF-V  
import org.rut.util.algorithm.support.ImprovedMergeSort; h4pS~/  
import org.rut.util.algorithm.support.ImprovedQuickSort;  l!|c_  
import org.rut.util.algorithm.support.InsertSort; `uMEK>b  
import org.rut.util.algorithm.support.MergeSort; X=$Jp.  
import org.rut.util.algorithm.support.QuickSort; .c"nDCFVR  
import org.rut.util.algorithm.support.SelectionSort; Wm}c-GD  
import org.rut.util.algorithm.support.ShellSort; Q4"\k. ?  
crM5&L9zF  
/** 1(?4*v@B  
* @author treeroot u< BU4c/p  
* @since 2006-2-2 BY6#dlDi  
* @version 1.0 &$~fz":1!  
*/ YJ _eE  
public class SortUtil { F<* /J]  
public final static int INSERT = 1; >D,Oav  
public final static int BUBBLE = 2; 15g! Q *v  
public final static int SELECTION = 3; !wy _3a  
public final static int SHELL = 4; X1| +9  
public final static int QUICK = 5; EU?qLj':  
public final static int IMPROVED_QUICK = 6; 2a$. S " ?  
public final static int MERGE = 7; EjR(AqZY  
public final static int IMPROVED_MERGE = 8; uks75W!}U  
public final static int HEAP = 9; OM\J4"YV$  
t}q e_c  
public static void sort(int[] data) { +vh|m5"7I7  
sort(data, IMPROVED_QUICK); i 9) G t  
} OpUfK4U)  
private static String[] name={ *'/,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bs~~C8+  
}; OsgPNy0  
*4cuWkQ,  
private static Sort[] impl=new Sort[]{ &BVHQ7[  
new InsertSort(), -N45ni87  
new BubbleSort(), 4era5=  
new SelectionSort(), 5p0~AN)  
new ShellSort(), RaJTya^  
new QuickSort(), .a*?Pal@@  
new ImprovedQuickSort(), k"N>pjgd$  
new MergeSort(), r6DLShP-Ur  
new ImprovedMergeSort(), OdzeHpH3g  
new HeapSort() |#TU"$;  
}; H5K Fm#  
Nm*(?1  
public static String toString(int algorithm){ MpCPY"WLL  
return name[algorithm-1]; hg)Xr5>  
} \`n(JV  
iGW|j>N  
public static void sort(int[] data, int algorithm) { c+:ZmrP/  
impl[algorithm-1].sort(data); *QC6zJ  
} 7H6Ts8^S  
\]ib%,:YU  
public static interface Sort { F]$ Nu  
public void sort(int[] data); m%HT)`>bg  
} }je<^]a  
/UCBoQ$/]  
public static void swap(int[] data, int i, int j) { 7H7 Xbi@  
int temp = data; ^h[6{F~J  
data = data[j]; K.Xy:l*z  
data[j] = temp; 7>Scf  
} q7B5#kb  
} 7)rQf{q7  
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