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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。 =#so[Pd  
插入排序: LLD#)Jl{?  
:v Do{My^1  
package org.rut.util.algorithm.support; m3']/}xHO  
EpUBO}q]  
import org.rut.util.algorithm.SortUtil; 0Bn35.K  
/** {Q~HMe`,  
* @author treeroot  c_ Dg0  
* @since 2006-2-2 bD:[r))#e  
* @version 1.0 $GJuS^@%  
*/ &$NYZ3?9  
public class InsertSort implements SortUtil.Sort{ /3KPK4!m  
|x+g5~$  
/* (non-Javadoc) jxdX7aik  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NjH` AMGBT  
*/ A9 ;!\Wo  
public void sort(int[] data) { m/bP`-/,  
int temp; EN-;@P9;C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lK"m|Z  
} $VNj0i. Pr  
} nAT,y9&  
} Q^} Ib[  
N/x]-$fl  
} Em]2K:  
ANuO(^  
冒泡排序: 76eF6N+%}t  
TJ_pMU  
package org.rut.util.algorithm.support; qx f8f  
VXP@)\!  
import org.rut.util.algorithm.SortUtil; @aC9O 9|~  
|E?,hTRe5  
/** ZGsI\3S  
* @author treeroot y"T(Unvc  
* @since 2006-2-2 &\m=|S  
* @version 1.0 ,p)Qu%'  
*/ 9NC?J@&B  
public class BubbleSort implements SortUtil.Sort{ <X "_S'O  
4d63+iM+}  
/* (non-Javadoc) 1haNpLfS>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o XFo  
*/ epGC Ta  
public void sort(int[] data) { PR3&LI;B*  
int temp; PdqyNn=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ OVUJiBp  
if(data[j] SortUtil.swap(data,j,j-1); 4o3TW#  
} =Y {<&:%(  
} rGm xK|R  
} z]HaE|j}S  
} dGG8k&  
bZlKy`Z  
} z2U^z*n{  
MRN=-|fV^  
选择排序: aL^ 58My&  
.r~M7 I  
package org.rut.util.algorithm.support; xU;/LJ6  
(Tv~$\=  
import org.rut.util.algorithm.SortUtil; d=eIsP'h  
:x3"Cj  
/** F10TvJ U  
* @author treeroot [9d4 0>e  
* @since 2006-2-2 =:*2t  
* @version 1.0 _V,bvHWlM  
*/ N1yx|g:  
public class SelectionSort implements SortUtil.Sort { $!7$0WbC  
:kKdda<g#  
/* @ MKf$O4K  
* (non-Javadoc) h|%a}])G)  
* zGtv(gwk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nduUuCIY.  
*/ :$Xvq-#$|  
public void sort(int[] data) { '1"vwXJ"  
int temp; `5 Iaz  
for (int i = 0; i < data.length; i++) { Oh5aJ)"D  
int lowIndex = i; #c$z&J7e  
for (int j = data.length - 1; j > i; j--) { y`\rb<AZ*t  
if (data[j] < data[lowIndex]) { gTb%c84  
lowIndex = j; .~,=?aq^  
} -T2w?|  
} O"~CZh,:r}  
SortUtil.swap(data,i,lowIndex); KnC:hus  
} F$@(0c  
} Eg(.L,dj  
|_m N:(3  
} Jd28/X5&  
w5`EJp8MC  
Shell排序: \49s;\I]  
"sYZ3  
package org.rut.util.algorithm.support; 3QDz9KwCAw  
>Xi/ p$$7u  
import org.rut.util.algorithm.SortUtil; w>wzV=R  
TjS &V  
/** G=PX'dS  
* @author treeroot .`jYrW-k  
* @since 2006-2-2 rGlnu.mK^  
* @version 1.0 n;LjKE  
*/ a FL; E  
public class ShellSort implements SortUtil.Sort{ a5?Yh<cJ  
a= (vS  
/* (non-Javadoc) \Vx_$E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6z2%/P-'  
*/ g\1|<jb3  
public void sort(int[] data) { .u:aX$t+  
for(int i=data.length/2;i>2;i/=2){ AP+%T   
for(int j=0;j insertSort(data,j,i); /vs79^&  
} Gq-~z mg  
} (,D:6(R7t  
insertSort(data,0,1); Xi0fX$-,  
} H'}6Mw%ra  
jI%glO'2  
/** *iVE O  
* @param data (_=R<:  
* @param j Nxr\Yey  
* @param i =wlPm5  
*/ JPM~tp?;<  
private void insertSort(int[] data, int start, int inc) { :!wl/X ~  
int temp; *tfD^nctO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vZ1?4hG  
} X#tCIyK,nV  
} Y|S>{$W  
} V[0 ZNT&  
F *1w8+  
} |t~*!0>3  
fR]KXfZ  
快速排序: ART0o7B  
BS3{TGn  
package org.rut.util.algorithm.support; m(`O>zS  
=w/AJ%6  
import org.rut.util.algorithm.SortUtil; 3_"tds <L  
o,RiAtdk  
/** w+$~ ds  
* @author treeroot 4UHviuOo8  
* @since 2006-2-2 B.:1fT7lI  
* @version 1.0 z9E*1B+  
*/ S$ k=70H  
public class QuickSort implements SortUtil.Sort{ <m~{60{  
zKT4j1 h  
/* (non-Javadoc) [qU`}S2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dt\rrN:v  
*/ beB3*o  
public void sort(int[] data) { [\rzXE  
quickSort(data,0,data.length-1); ]3~ u @6  
} Y h53Z"a  
private void quickSort(int[] data,int i,int j){ C;~LY&=  
int pivotIndex=(i+j)/2; tIS.,CEQF  
file://swap [I}z\3Z %  
SortUtil.swap(data,pivotIndex,j); ueEf>0  
DFvGc`O4  
int k=partition(data,i-1,j,data[j]); "^)GnK +-  
SortUtil.swap(data,k,j); b[J0+l\!"  
if((k-i)>1) quickSort(data,i,k-1); /=g/{&3[a>  
if((j-k)>1) quickSort(data,k+1,j); Yl =-j  
>[;L.  
} 8nwps(3  
/** r7FJqd  
* @param data TfHL'u9B  
* @param i 4s@Tn>%SP  
* @param j 'Fql;&U >  
* @return Q%524%f$  
*/ q]U!n  
private int partition(int[] data, int l, int r,int pivot) { ]D4lZK>H  
do{ @^/aS;B$>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rBOH9L  
SortUtil.swap(data,l,r); X#HH7V>  
} nu Vux5:  
while(l SortUtil.swap(data,l,r); %y7ZcH'  
return l; K0D|p$v  
} qWf[X'  
USaa#s4'  
} ) O&zb_{n  
q[ 9N4nj$<  
改进后的快速排序: r&IDTS#  
DP;:%L}  
package org.rut.util.algorithm.support; j+e~ tCcN/  
t+K1ArQc  
import org.rut.util.algorithm.SortUtil; :^U>n{   
y06xl:iQwF  
/** C_JO:$\rE  
* @author treeroot z$L e,+  
* @since 2006-2-2 CM%;/[WBxy  
* @version 1.0 Q @[gj:w  
*/ I9m9`4BK  
public class ImprovedQuickSort implements SortUtil.Sort { /nv+*+Q?d  
d]:G#<.  
private static int MAX_STACK_SIZE=4096; 4LW~  
private static int THRESHOLD=10; bI`JG:^b  
/* (non-Javadoc) 0 /9 C=v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \hn$-'=4  
*/ 78r0K 5=  
public void sort(int[] data) { Xvoz4'Gme  
int[] stack=new int[MAX_STACK_SIZE]; 1Wiz0X/  
wS+!>Q_]w  
int top=-1; b- bvkPN  
int pivot; j dz IU  
int pivotIndex,l,r; UWhJkJsX  
'IT]VRObP  
stack[++top]=0; ~ch%mI~  
stack[++top]=data.length-1; ,fqM>Q  
L62%s[  
while(top>0){ K|OPtYeb  
int j=stack[top--]; z 2jC48~  
int i=stack[top--]; Ftd,dqd  
7WUv  O  
pivotIndex=(i+j)/2; nA{yH}D4  
pivot=data[pivotIndex]; _!!Fg%a5"R  
9_?e, Q  
SortUtil.swap(data,pivotIndex,j); O&&_)  
~<~ ~C#R  
file://partition 74N3wi5B  
l=i-1; z&Aya*0v`  
r=j; TI\xCIH  
do{ n>7aZ1Qa  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H?!DcUg CC  
SortUtil.swap(data,l,r); CJ7S5   
} q VI0?B x  
while(l SortUtil.swap(data,l,r); z+{+Q9j  
SortUtil.swap(data,l,j); }/h&`0z `  
t72rCq QC  
if((l-i)>THRESHOLD){ KU*aJl_n,  
stack[++top]=i; 4=EA3`l  
stack[++top]=l-1; 2Q\\l @b\  
} GNEPb?+T  
if((j-l)>THRESHOLD){ g<,0kl2'S  
stack[++top]=l+1; 0 q1x+  
stack[++top]=j; 0 x' d^  
} d0C _:_  
U]w"T{;@.)  
} KV$4}{  
file://new InsertSort().sort(data); X/90S2=P  
insertSort(data); c8Ud<M .  
} Zd%wX<hU"  
/** XogCq?_m  
* @param data v;U5[  
*/ rGXUV`5Na  
private void insertSort(int[] data) { RjTGm=1w  
int temp; <P'FqQ]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'TuaP `]<  
} !c{F{ t-a  
} $IjI{%  
} U8y?S]}vo  
Jj\lF*B  
} awvP;F?q|  
@6UZC-M0  
归并排序: >T c\~l  
s;=C&N5g  
package org.rut.util.algorithm.support; -u4")V>  
+4 Pes  
import org.rut.util.algorithm.SortUtil; R dwt4A+  
#^Pab^Y3r-  
/** iU37LODa2T  
* @author treeroot 5V\",PA W  
* @since 2006-2-2 JAP(J~  
* @version 1.0 3fB]uq+eD%  
*/ (Nk[ys}%*  
public class MergeSort implements SortUtil.Sort{ v3FdlE  
AO]cnh C  
/* (non-Javadoc) |#M|"7;2z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *8m['$oyV  
*/ qk3|fW/-  
public void sort(int[] data) { DcdEt=\)h  
int[] temp=new int[data.length]; Hh*?[-&r~  
mergeSort(data,temp,0,data.length-1); xE]y*\  
} yz=X{p1  
\q4r/SbgW  
private void mergeSort(int[] data,int[] temp,int l,int r){ ' |B3@9<  
int mid=(l+r)/2; <F(2D<d{;)  
if(l==r) return ; N$IA~)  
mergeSort(data,temp,l,mid); *B}O  
mergeSort(data,temp,mid+1,r); 3 V>$H\H  
for(int i=l;i<=r;i++){ H,5]w\R6\  
temp=data; kltW  
} *o4a<.hd2  
int i1=l; Uc'}y!R  
int i2=mid+1; )RvX}y-  
for(int cur=l;cur<=r;cur++){ g#^MO]pY  
if(i1==mid+1) Iz#4!E|<  
data[cur]=temp[i2++]; .(.<  
else if(i2>r) !|i #g$  
data[cur]=temp[i1++]; qy)~OBY  
else if(temp[i1] data[cur]=temp[i1++]; +kQ=2dva  
else ^]D1':  
data[cur]=temp[i2++]; h=:/9O{H  
} PnaiSt9p?r  
} kaB4[u  
|rwY   
} rzn,N FI  
\yFUQq:  
改进后的归并排序: wW1\{<hgr  
4C%pKV  
package org.rut.util.algorithm.support; <Nqbp  
{.jW"0U  
import org.rut.util.algorithm.SortUtil; ) y;7\-K0  
_/noWwVu  
/** O0xqA\  
* @author treeroot $ P?^GB>u  
* @since 2006-2-2 3]*1%=~X/  
* @version 1.0 $*iovam>^]  
*/ ]VLseF  
public class ImprovedMergeSort implements SortUtil.Sort { ?_^{9q%9  
ZIc.MNq  
private static final int THRESHOLD = 10; _UP fqC ?  
o!K DeY  
/* dCTyfXou[=  
* (non-Javadoc) OQB7C0+ &  
* HNv~ZAzBG-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cd"{7<OyM4  
*/ wN4#j}C  
public void sort(int[] data) { ]lBCK  
int[] temp=new int[data.length]; dp'[I:X  
mergeSort(data,temp,0,data.length-1); ceJi|`F  
} ?X6}+  
BDWbWA 6  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'u;O2$  
int i, j, k; _3yG<'f[Y  
int mid = (l + r) / 2; Z 9+fTT  
if (l == r) H4AT>}ri  
return; tLa%8@;'$  
if ((mid - l) >= THRESHOLD) |oXd4  
mergeSort(data, temp, l, mid); ZDbe]9#Xh  
else :vG0 l\  
insertSort(data, l, mid - l + 1); % J^x `P  
if ((r - mid) > THRESHOLD) ^zQI_ydG  
mergeSort(data, temp, mid + 1, r); 60u_,@rV  
else 2*V[kmD/3  
insertSort(data, mid + 1, r - mid); ~8u *sy  
"^\q{S&q2P  
for (i = l; i <= mid; i++) { s) shq3O  
temp = data; dM^Z,; u  
} #Ir?v  
for (j = 1; j <= r - mid; j++) { 0O>ClE~P  
temp[r - j + 1] = data[j + mid]; /0XMQy  
} Tgr,1) T  
int a = temp[l]; uoI7' :Nv  
int b = temp[r]; +lqGf  
for (i = l, j = r, k = l; k <= r; k++) { pOo016afmA  
if (a < b) { q -8G  
data[k] = temp[i++]; *??lwvJp  
a = temp; * /n8T]s  
} else { ([dd)QU  
data[k] = temp[j--]; c Pf_B=  
b = temp[j]; g gx_h  
} 1d<Uwb>  
} kygw}|, N  
} bT^dtEr[  
M>]A! W=  
/** l\*9rs:!  
* @param data #Or;"}P>fB  
* @param l F`QViZ'n>#  
* @param i K8sRan[4}  
*/ _V-KyK  
private void insertSort(int[] data, int start, int len) { p/HDG ^T:u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2H)4}5H  
} 7PX`kI  
} , ,{UGe 3  
} 6p)AQTh>  
} Q,&Li+u|  
MxIa,M <  
堆排序: Q S&B"7;g  
rTIu'  
package org.rut.util.algorithm.support; 6(f 'P_*  
Yg^ &4ZF  
import org.rut.util.algorithm.SortUtil; Y#ZgrziYM  
[7FG;}lB-  
/** \:WWrY8&  
* @author treeroot qJrT  
* @since 2006-2-2 c>B1cR  
* @version 1.0 :x*)o+  
*/  mLxgvp  
public class HeapSort implements SortUtil.Sort{ (?na|yd  
}|kFHodo  
/* (non-Javadoc) @owneSD qN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }oRBQP^&K  
*/ dz] 5s  
public void sort(int[] data) { m0"K^p  
MaxHeap h=new MaxHeap(); TmQIpeych  
h.init(data); MIrx,d  
for(int i=0;i h.remove(); rGyAzL]  
System.arraycopy(h.queue,1,data,0,data.length); fORkH^Y(&  
} K -U} sW  
,_Z(!| rW  
private static class MaxHeap{ /uwi$~Ed  
_qxI9Q}<"  
void init(int[] data){ ?FQ#I~'<  
this.queue=new int[data.length+1]; XVYFyza;  
for(int i=0;i queue[++size]=data; Fz%;_%j  
fixUp(size); e"nm<&  
} b|d-vnYE  
} 52e>f5m.  
<W"W13*j!  
private int size=0; O,Q.-  
hJ}i+[~be  
private int[] queue; j<B9$8x&  
vwU1}H  
public int get() { >.iF,[.[F<  
return queue[1]; f~`=I NrU  
} Q5+1'mzAB  
'dLw8&T+W  
public void remove() { !*N9PUM  
SortUtil.swap(queue,1,size--); <1D|TrP  
fixDown(1); ]%' AZ`8  
} Qd[_W^QI  
file://fixdown BNu >/zGpB  
private void fixDown(int k) { 0ns\:2)cEB  
int j; }Y~Dk]*  
while ((j = k << 1) <= size) { E7:xPNU  
if (j < size %26amp;%26amp; queue[j] j++; =:- fK-d  
if (queue[k]>queue[j]) file://不用交换  )(G9[DG  
break; HC%Hbc~S_Q  
SortUtil.swap(queue,j,k); .A2$C|a*  
k = j; =&WIa#!=  
} 'a ['lF  
} 5?kfE  
private void fixUp(int k) { ?h= n5}Y  
while (k > 1) { v`HE R6  
int j = k >> 1; Y}:~6`-jj  
if (queue[j]>queue[k]) gxv^=;2C  
break; m\L`$=eO8  
SortUtil.swap(queue,j,k); b2m={q(s  
k = j; Zse&{  
} $9)os7H7  
} ;w7mr1  
y6XOq>  
} WAa45G  
B*(]T|ff<  
} p)y5[HX  
j/O~8o&  
SortUtil: [FO4x`  
c|&3e84U  
package org.rut.util.algorithm; 7n8nJTU{4j  
^3;B4tj[  
import org.rut.util.algorithm.support.BubbleSort; -*C WF|<G  
import org.rut.util.algorithm.support.HeapSort; IOy0WHl|  
import org.rut.util.algorithm.support.ImprovedMergeSort; D}_.D=)  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5R7x%3@L  
import org.rut.util.algorithm.support.InsertSort; v@ _1V  
import org.rut.util.algorithm.support.MergeSort; mci> MEb  
import org.rut.util.algorithm.support.QuickSort; uUH4vUa  
import org.rut.util.algorithm.support.SelectionSort; `JySuP2~/  
import org.rut.util.algorithm.support.ShellSort; XB)D".\  
$|N6I  
/** {213/@,  
* @author treeroot T ozx0??)  
* @since 2006-2-2 (bsx|8[  
* @version 1.0 (2g a: }K  
*/ ;8sL  
public class SortUtil { X0/slOT  
public final static int INSERT = 1; NJUKH1lIhR  
public final static int BUBBLE = 2; GWA"!~Hu  
public final static int SELECTION = 3; I Dohv[#  
public final static int SHELL = 4; b}[S+G-9W  
public final static int QUICK = 5; 6d-\+ t8  
public final static int IMPROVED_QUICK = 6; k# [!; <  
public final static int MERGE = 7; <LHhs <M'  
public final static int IMPROVED_MERGE = 8; l5[5Y6c>  
public final static int HEAP = 9; 2Ez<Iw  
E9:@H;Gc  
public static void sort(int[] data) { cS ~OxAS  
sort(data, IMPROVED_QUICK); M<vPE4TIr*  
} SyWZOE%p  
private static String[] name={ :gVUk\)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K d&/9<{>  
}; d)o5JD/  
kwI``7g8*e  
private static Sort[] impl=new Sort[]{ L)e" qC_-  
new InsertSort(), HQqFrR  
new BubbleSort(), U0x A~5B  
new SelectionSort(), YvR bM  
new ShellSort(), -ss= c#  
new QuickSort(), US g"wJY  
new ImprovedQuickSort(), acd[rjeT  
new MergeSort(), ~iL^KeAp   
new ImprovedMergeSort(), uo9#(6  
new HeapSort() Q]ersA8 V>  
}; dSM\:/t  
F.9}jd{  
public static String toString(int algorithm){ hZ&KE78?  
return name[algorithm-1]; Pfd1[~,  
} FuhmLm'p  
broLC5hbQU  
public static void sort(int[] data, int algorithm) { rB>ge]$.  
impl[algorithm-1].sort(data); >!963>DR  
} n;g'?z=hy  
5ZCu6 A  
public static interface Sort { *dl hRa  
public void sort(int[] data); Fr9/TI  
} w,UE0i9I  
JJ: ku&Mb  
public static void swap(int[] data, int i, int j) { h4Crq Yxa_  
int temp = data; $y(;"hy  
data = data[j]; Obs#2>h  
data[j] = temp; wlS/(:02  
} 6u[fCGi%  
} 3I6ocj [,  
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