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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。 9Psy$  
插入排序: $ GL$ iA  
1#&*xF "  
package org.rut.util.algorithm.support; Lg sQz(-  
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import org.rut.util.algorithm.SortUtil; *U)!9DvA  
/** h7wm xa;  
* @author treeroot v;80RjPy>  
* @since 2006-2-2 /~K-0K#w  
* @version 1.0 0Zs}y\J`  
*/ BI3Q~ADV  
public class InsertSort implements SortUtil.Sort{ MrXhVZ"d*  
L/_OgL]YdI  
/* (non-Javadoc) Ir_K8 3VM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W]4Gs;  
*/ 3<AZ,gF1  
public void sort(int[] data) { 9pb4!=g*  
int temp; % tN{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ez"Xb 7  
} Z1wN+Y.CA  
} oL2|@WNj,  
} }`{aeVHT  
? !MDg_oHd  
} \8'fy\  
U:M?Ji5CY  
冒泡排序: /0uZ(F|>I  
#e((F,1z  
package org.rut.util.algorithm.support; Mp:tcy,*  
^^qB=N[';  
import org.rut.util.algorithm.SortUtil; H$9--p  
NU-({dGK}  
/** ik=~`3Zp0  
* @author treeroot S ])Ap'E  
* @since 2006-2-2 D ?1$I0=  
* @version 1.0 xVao3+r  
*/ L6fc_Mo.EE  
public class BubbleSort implements SortUtil.Sort{ b?hdWQSW7  
7q<I7Wt  
/* (non-Javadoc) QU2\gAM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) np}F [v  
*/ T9osueh4  
public void sort(int[] data) { Hc ]/0:  
int temp; >%h_ R:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %fGS< W;  
if(data[j] SortUtil.swap(data,j,j-1); #joGIw  
} ;H9d.D8  
} :<Yc V#!P  
} @kK${  
} vd c k  
3)^-A4~E  
}  {.GC7dx  
)@DH&  
选择排序: p6$ QTx  
Z$ {I 4a  
package org.rut.util.algorithm.support; N 3 i ,_  
TL ;2,@H`  
import org.rut.util.algorithm.SortUtil; lX/6u E_%  
(%ra~s?  
/** jhr{JApbJv  
* @author treeroot :vz_f$=  
* @since 2006-2-2 g4cmYg3  
* @version 1.0 *z!!zRh3x  
*/ 4\H:^U&  
public class SelectionSort implements SortUtil.Sort { 2-Y%W(bEzs  
//2G5F;  
/* -x=abyD  
* (non-Javadoc) M;V (Tf  
* *A':^vgk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R?a)2jl  
*/ 7afD^H%  
public void sort(int[] data) { D^W6Cq5\  
int temp; /-TJtR4>  
for (int i = 0; i < data.length; i++) { h?jy'>T?b2  
int lowIndex = i; `VCU`Y  
for (int j = data.length - 1; j > i; j--) { aT$q1!U`j2  
if (data[j] < data[lowIndex]) { @C{IgV  
lowIndex = j; 3<LG~HWST  
} IT5AB?bxH  
} D *RF._  
SortUtil.swap(data,i,lowIndex); qcEiJ}-  
} Y0:y72mK  
} g^OU+7o  
8aQ\Yx  
} Pou-AzEP$  
F2WUG  
Shell排序: )T/"QF}<T  
=|O`al  
package org.rut.util.algorithm.support; `X'-4/Y  
!Sx }~XB<  
import org.rut.util.algorithm.SortUtil; KY9sa/xO  
fo9O+e s  
/** F/sXr(7  
* @author treeroot NWd%Za5K;  
* @since 2006-2-2 + VE }c  
* @version 1.0 qMD6LWJ  
*/ .<} (J#vC  
public class ShellSort implements SortUtil.Sort{ z1XFc*5  
kFZw"5hb  
/* (non-Javadoc) C2NJrg4(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 12n5{'H2%  
*/ J;,6ydf8!  
public void sort(int[] data) { jU |0!]  
for(int i=data.length/2;i>2;i/=2){ Y4e64`V)  
for(int j=0;j insertSort(data,j,i); gO_{(\w*  
} KoZ" yD  
} h<U<K O  
insertSort(data,0,1); S'#KPzy.  
} fz#e4+oH  
R h zf.kp  
/** vU0j!XqE  
* @param data xZZW*d_b  
* @param j Is&z~Xy/  
* @param i ]S4TX  
*/ ~n9BN'@x  
private void insertSort(int[] data, int start, int inc) { L!s/0kBg  
int temp; [ R1S+i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -f IX6  
} t"k6wv;Tq  
} z6 2gF|Uj  
} F#>?i}  
ig:,:KN  
} pt.0%3  
UhQ[|c  
快速排序: XF(0>-  
L/dG 0a@1X  
package org.rut.util.algorithm.support; H)S" `j  
sJo]$/?F  
import org.rut.util.algorithm.SortUtil; ,Q!sns[T  
k0~mK7k  
/** &0Yv*,4]  
* @author treeroot ]vj=M-:+  
* @since 2006-2-2  F* "  
* @version 1.0 F!OVx<  
*/ [u\E*8  
public class QuickSort implements SortUtil.Sort{ |!:ImX@  
1Y!" C  
/* (non-Javadoc) gBfYm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &m2FEQLj  
*/ }mQ7N&cC  
public void sort(int[] data) { ]ZKmf}A)1P  
quickSort(data,0,data.length-1); ZRN*.  
} t:NTk(  
private void quickSort(int[] data,int i,int j){ vn<z\wVbf  
int pivotIndex=(i+j)/2; g]?&qF}  
file://swap {E`[ `Kf  
SortUtil.swap(data,pivotIndex,j); 4UD<g+|  
:#W40rUb  
int k=partition(data,i-1,j,data[j]); xp-.,^q\w  
SortUtil.swap(data,k,j); )\#w=P  
if((k-i)>1) quickSort(data,i,k-1); 3`[f<XaL  
if((j-k)>1) quickSort(data,k+1,j); mpfc2>6Il.  
-3`S;Dmn  
} Q-o}Xnj*!L  
/** spter35b[  
* @param data ^*(*tS|M  
* @param i A.tONPi  
* @param j j]th6  
* @return VL= .JwK  
*/ ;1PnbU b  
private int partition(int[] data, int l, int r,int pivot) { _V\rs{ 5  
do{ !wy Qk  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^]:w5\DG  
SortUtil.swap(data,l,r); o}H7;v8H  
} )jk X&7x  
while(l SortUtil.swap(data,l,r); 8sb<$M$c  
return l; #G2~#\  
} (#x <qi,T  
.w=( G  
} Y/cnj n  
HnU; N S3J  
改进后的快速排序: (3 xCW  
;mH O#  
package org.rut.util.algorithm.support; G?D7R/0)  
l",JN.w  
import org.rut.util.algorithm.SortUtil; *6D0>F  
C-!!1-Eq?:  
/** J60XUxf  
* @author treeroot 5u +U^D  
* @since 2006-2-2 :{@&5KQ8)  
* @version 1.0 s%F}4W2s  
*/ ArWMbT>Zqw  
public class ImprovedQuickSort implements SortUtil.Sort { ;Q"xXT`;:  
Ay\=&4dv  
private static int MAX_STACK_SIZE=4096; _h|rH   
private static int THRESHOLD=10; *ue- x!"c  
/* (non-Javadoc) /Y$UJt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b|mWEB.p  
*/ A;~lG3j4  
public void sort(int[] data) { lnuf_;0  
int[] stack=new int[MAX_STACK_SIZE]; GPBp.$q+B  
QHOA__?  
int top=-1; 9qc<m'MZ  
int pivot; 8xs}neDg*  
int pivotIndex,l,r; _GEt:=DAP#  
I3 /^{-n  
stack[++top]=0; ?/ xk  
stack[++top]=data.length-1; gz fs9e  
Yd]y`J?#  
while(top>0){ NAd|n+[d  
int j=stack[top--]; 4qMqA T  
int i=stack[top--]; :pj 00  
I&JVY8'  
pivotIndex=(i+j)/2; Cm@e^l!  
pivot=data[pivotIndex]; DM {r<?V  
sf{rs*bgp  
SortUtil.swap(data,pivotIndex,j); ~ [L4,q  
l&3f<e  
file://partition NIZ N}DnP  
l=i-1; zbQ-l1E  
r=j; h^_Sd"l3  
do{ 2R9AYI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 533n z8&9@  
SortUtil.swap(data,l,r); E"d\N-I  
} WAr;g?Q8  
while(l SortUtil.swap(data,l,r); t^eWFX  
SortUtil.swap(data,l,j); "|P8L| @*  
K@av32{  
if((l-i)>THRESHOLD){ Ln6\Iis  
stack[++top]=i; w`_cmI  
stack[++top]=l-1; g<C_3ap/  
} /{Ff)<Q.Z  
if((j-l)>THRESHOLD){ 8!8 yA  
stack[++top]=l+1; %`*`HU#X  
stack[++top]=j; 1Rrp#E}  
} P<<?7_ ??  
M"QT(u+  
} &!/E&e$_  
file://new InsertSort().sort(data); }:JE*D|  
insertSort(data); \XDc{c]  
} Axb,{X[6g  
/** ['9awgkr/  
* @param data Py^ _::  
*/ k?(x}IZdG  
private void insertSort(int[] data) { Dn{ hU $*  
int temp; )qXl8HI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ) 0p9I0=  
} ^{z@=o<o  
} VI83 3  
} PL+r*M%ll  
9A|deETa-  
} Rb!|2h)  
5]C}044  
归并排序: TNwBnMe  
_H[LUl9  
package org.rut.util.algorithm.support; ,3 !D(&  
Hn~=O8/2  
import org.rut.util.algorithm.SortUtil; o1jDQ+  
J\7ukm"9  
/** nR%ASUx:Y  
* @author treeroot 06hzCWm#  
* @since 2006-2-2 zj~(CNE  
* @version 1.0 ,'=Tf=wq  
*/ CM$q{;y  
public class MergeSort implements SortUtil.Sort{ sK1YmB :~a  
oWCy%76@  
/* (non-Javadoc) 4sU*UePr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D,cGW,2Nv  
*/ Kob i!  
public void sort(int[] data) { I~:vX^%9  
int[] temp=new int[data.length]; rByC6HV"  
mergeSort(data,temp,0,data.length-1); -e#~CE-  
} hN0Y8Ia/5%  
<P)U Ggd  
private void mergeSort(int[] data,int[] temp,int l,int r){ *g0}pD;r  
int mid=(l+r)/2; %V40I{1  
if(l==r) return ; g&z)y  
mergeSort(data,temp,l,mid); SVr3OyzI  
mergeSort(data,temp,mid+1,r); vTrjhTa\  
for(int i=l;i<=r;i++){ k7o49Y(#  
temp=data; Cs2hi,s  
} .MoOjx?  
int i1=l; t(<^of:  
int i2=mid+1; K})=&<M0  
for(int cur=l;cur<=r;cur++){ )SkJgzvC  
if(i1==mid+1) bCv=Uo,+6  
data[cur]=temp[i2++]; ;rBd_  
else if(i2>r) a/})X[2  
data[cur]=temp[i1++]; *,C[yg1P  
else if(temp[i1] data[cur]=temp[i1++]; }b$?t7Q)  
else e_eNtVq  
data[cur]=temp[i2++]; @UbH ;m  
} cJ CKxj  
} +ZuT\P&kR5  
I+qg'mo  
} qG=?+em  
977%9z<h  
改进后的归并排序: +Ce[OG.  
96L-bBtyY  
package org.rut.util.algorithm.support; 1|]IWX|  
Vjv~RNGF  
import org.rut.util.algorithm.SortUtil; 1 _A B; ^  
nC-=CMWWr  
/** k,) xv?  
* @author treeroot zWN/>~}U \  
* @since 2006-2-2 $P=B66t ^  
* @version 1.0 + F{hFuHV  
*/ J%8M+!`F  
public class ImprovedMergeSort implements SortUtil.Sort { 4CUoXs'  
~&zrDj~FI  
private static final int THRESHOLD = 10; MCPVql`+`q  
}]dK26pX  
/* ,r=9$i_  
* (non-Javadoc) U8f!yXF'  
* hW^*b:v{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YY! Lv:.7>  
*/ [r[IWy(}  
public void sort(int[] data) { ].=~C"s,a  
int[] temp=new int[data.length]; #3b_ #+,  
mergeSort(data,temp,0,data.length-1); sj;n1t}$S  
} <)hA? 3J  
.G ^-. p  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3YKJN4  
int i, j, k; %l4;-x<e  
int mid = (l + r) / 2; ^M:Y$9r_s  
if (l == r) zmA]@'j  
return; ~}lYp^~:J  
if ((mid - l) >= THRESHOLD) {;z{U;j  
mergeSort(data, temp, l, mid); JJIlR{WY_  
else %anY'GK   
insertSort(data, l, mid - l + 1); fU6O:-  
if ((r - mid) > THRESHOLD) {Xw6]d  
mergeSort(data, temp, mid + 1, r); {D6p?TL+  
else 9.:]eL  
insertSort(data, mid + 1, r - mid); &dH[lB  
5Kadh2nz  
for (i = l; i <= mid; i++) { & bKl(,  
temp = data; $;4y2?E  
} \ F\ /<  
for (j = 1; j <= r - mid; j++) { &:>3tFQSH  
temp[r - j + 1] = data[j + mid]; \?$`dA[  
} O c[F  
int a = temp[l]; (6y[,lYH  
int b = temp[r]; uW%(ySbq  
for (i = l, j = r, k = l; k <= r; k++) { li @:  
if (a < b) { Qu  x1N  
data[k] = temp[i++]; m1 tYDZ"i  
a = temp; ab}Kt($  
} else { + :IwP  
data[k] = temp[j--]; p\'0m0*   
b = temp[j]; 6UAn# d9  
} ;+Dq 3NE  
} |w{}h6 a  
} 2bs={p$}a  
3j I rB%  
/** >3C4S  
* @param data {h}0"5  
* @param l z[cs/x  
* @param i c\Z.V*o  
*/ Y94 ^mt-  
private void insertSort(int[] data, int start, int len) { s~z~9#G(6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }&*wJ]j`L  
} *(,zPn,  
} { R`"Nk  
} 'bd|Oww1u  
} s|`ZV^R  
)Ja&Y  
堆排序: =O1py_m  
W0I)< S  
package org.rut.util.algorithm.support; PM?F;mj  
K9HXy*y49  
import org.rut.util.algorithm.SortUtil; D<QE?:#  
< dD)>Y.  
/** r6b;v2!8  
* @author treeroot cXd?48O  
* @since 2006-2-2 ee}HQ.}Ja  
* @version 1.0 ? PI2X.6  
*/ }fV+Kd$CB  
public class HeapSort implements SortUtil.Sort{ fi,h`mdT?  
8v ZY+Q >  
/* (non-Javadoc) ; u@& [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t@;r~S b  
*/ 5r)]o'? s  
public void sort(int[] data) { V JJ6q  
MaxHeap h=new MaxHeap(); LmZ"_  
h.init(data); Y'{F^VxA/  
for(int i=0;i h.remove(); W"v"mjYud  
System.arraycopy(h.queue,1,data,0,data.length);  z@8W  
} /$U< S"  
tkX?iqKQ  
private static class MaxHeap{ ,J4rKGG  
W\pO`FL  
void init(int[] data){ 4G_At  
this.queue=new int[data.length+1]; 3FgTM(  
for(int i=0;i queue[++size]=data; CX}==0od  
fixUp(size); Q H 57[Yg  
} >Y6iLQ$X  
} pQNTN.L9NZ  
-<{;.~nI.  
private int size=0; u85  dG7  
cuoZ:Wh  
private int[] queue; 6ec#3~ Y]  
>]}c,4D(  
public int get() { 1PUeU+  
return queue[1]; *DcB?8%  
} rizWaw5E!8  
Rn_FYP  
public void remove() { Js'j}w  
SortUtil.swap(queue,1,size--); tJvs ?eZ)  
fixDown(1); #/0d  
} O>3f*Cc  
file://fixdown pGdFeEkB/  
private void fixDown(int k) { "qdEu KI  
int j; %F}i2!\<L  
while ((j = k << 1) <= size) { l<)k`lrMX4  
if (j < size %26amp;%26amp; queue[j] j++; od-yVE&  
if (queue[k]>queue[j]) file://不用交换 2r"J"C  
break; P^57a?[`  
SortUtil.swap(queue,j,k); +pY-- 5t  
k = j; tyU'[LF?  
} ?p'DgL{  
} w(oi6kg  
private void fixUp(int k) { })y B2Q0  
while (k > 1) { gLK_b;:  
int j = k >> 1; ?J,K[.z  
if (queue[j]>queue[k]) 045_0+r"@  
break; 6qd?&.=r  
SortUtil.swap(queue,j,k); ]S 3l' "  
k = j; fZavZ\qU  
} y#{v\h Cz  
} isU4D  
4ATIF ;G'<  
} [ 0z-X7=e  
)?;+<,  
} V [Wo9Y\  
a7}O.NDf  
SortUtil: J3XrlSc  
M.9w_bW]#D  
package org.rut.util.algorithm; %j/}e>$"Nk  
-BC`p 8  
import org.rut.util.algorithm.support.BubbleSort; (>SucUU  
import org.rut.util.algorithm.support.HeapSort; _P9*78  
import org.rut.util.algorithm.support.ImprovedMergeSort; Wi@YJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; Vr:`?V9Q2(  
import org.rut.util.algorithm.support.InsertSort; C@3UsD\s(  
import org.rut.util.algorithm.support.MergeSort; $'n?V=4  
import org.rut.util.algorithm.support.QuickSort; ]P >c{  
import org.rut.util.algorithm.support.SelectionSort; /RI"a^&9A  
import org.rut.util.algorithm.support.ShellSort; hr W2#v  
1G8,Eah  
/** l?B=5*0  
* @author treeroot :n,x?bM  
* @since 2006-2-2 U&W/Nj  
* @version 1.0 snYyxi  
*/ [nf 5<  
public class SortUtil { L:\>)6]Ls  
public final static int INSERT = 1; CrB4%W:{  
public final static int BUBBLE = 2; g&rz*)|/  
public final static int SELECTION = 3; TPn#cIPG  
public final static int SHELL = 4; PsM8J  
public final static int QUICK = 5; 3qkPe_<I  
public final static int IMPROVED_QUICK = 6; 9v/=o`J#  
public final static int MERGE = 7; )|6OPR@(#/  
public final static int IMPROVED_MERGE = 8; H.< F6  
public final static int HEAP = 9; @RHG@{x{K  
~3)d?{5  
public static void sort(int[] data) { /\MkH\zg  
sort(data, IMPROVED_QUICK); .=zBUvy  
} lS]6Sk Z6  
private static String[] name={ /vI"v 4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k8b5~A,  
}; 0ev='v8?  
av bup  
private static Sort[] impl=new Sort[]{ j&[u$P*K  
new InsertSort(), %c@PTpAM  
new BubbleSort(), bwI"V&*  
new SelectionSort(), +ryB*nT  
new ShellSort(), M'VJE|+t  
new QuickSort(), ZgfhNI\  
new ImprovedQuickSort(), B'I_i$g4w  
new MergeSort(),  (duR1Dz  
new ImprovedMergeSort(), kqjj&{vPFJ  
new HeapSort() 3Ww 37V>h  
}; s Fx0  
.hJcK/m  
public static String toString(int algorithm){ ]xGpN ]u  
return name[algorithm-1];  niyI$OC  
} <cxe   
<cO `jK  
public static void sort(int[] data, int algorithm) { cRE6/qrXGg  
impl[algorithm-1].sort(data); %2\6.c=c  
} b94+GL U8b  
c-"vQ>ux+  
public static interface Sort { = |E8z u%  
public void sort(int[] data); \,#;gS "  
} Qq%~e41ec  
0mNL!"  
public static void swap(int[] data, int i, int j) { N'CW Sf.e  
int temp = data; ' e %>Ip  
data = data[j]; ~x^Ra8A  
data[j] = temp; 9&{z?*  
} Vha,rIi  
} )q`.tsR>  
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