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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。 WT:ZT$W  
插入排序: {tUxRX  
<P#:dS%r  
package org.rut.util.algorithm.support; g])iU9)8  
,OBJ>_5  
import org.rut.util.algorithm.SortUtil; .DHQJ|J-1  
/** cg^=F_h  
* @author treeroot 3+H[S#e:Z  
* @since 2006-2-2 z,(.` %h  
* @version 1.0 n"f: 6|<  
*/ f}7/UGd  
public class InsertSort implements SortUtil.Sort{ nc;iJ/\4  
T} K@ykT  
/* (non-Javadoc) C;']FmK]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gq050Bl)  
*/ /#!1  
public void sort(int[] data) { -GYJ)f  
int temp; i)7B :uA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #dkSAS  
} m=V69 a#  
} d bHxc@H  
} L4v26*P  
|};-.}u^`h  
} a'?V:3 ]  
!H~PF*,hY  
冒泡排序: f*Yr*yC  
oq2-)F2/  
package org.rut.util.algorithm.support; sU"sd7#A  
UL`% Xx  
import org.rut.util.algorithm.SortUtil; h}=  
VCa`|S?2  
/** YD] :3!MI  
* @author treeroot +$#ytvDy  
* @since 2006-2-2 "-g5$v$de  
* @version 1.0 ?7TuE!!M  
*/ bkiMF$K,K  
public class BubbleSort implements SortUtil.Sort{ QUWx\hqE  
{gI%-  
/* (non-Javadoc) $j/#IzD1D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]:~z#k|2@6  
*/ oVY_|UujG  
public void sort(int[] data) { ~{ l @  
int temp; [I78<IJc  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $.3J1DU  
if(data[j] SortUtil.swap(data,j,j-1); x57O.WdN  
} S+GW}?!  
} /hAy1V6  
} X- `PF  
} +7r?vo1  
DtkOb,wY  
} hpo*5Va  
lA n^)EL  
选择排序: 7towjw r  
vCn\_Nu;W&  
package org.rut.util.algorithm.support; U+:Mu]97  
[E9)Da_)i  
import org.rut.util.algorithm.SortUtil; JN3&(t  
#Ht;5p>5  
/** ko6[Ej:TBo  
* @author treeroot {~ 1 ~V  
* @since 2006-2-2 5W(`lgVs,  
* @version 1.0 &<t`EI];)4  
*/ E6#")2C~  
public class SelectionSort implements SortUtil.Sort { lfqsoIn;  
Q; BD|95nl  
/* C;oO=R3r  
* (non-Javadoc) e(vnnv?R{  
* yZ,S$tSR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {VKP&{~O  
*/ .J \i!  
public void sort(int[] data) { ]~4*ak=)5\  
int temp; Tfw5i,{  
for (int i = 0; i < data.length; i++) { cQ(,M  
int lowIndex = i; .cB>ab&  
for (int j = data.length - 1; j > i; j--) { S%o6cl=  
if (data[j] < data[lowIndex]) { scZ&}Ni  
lowIndex = j; <%S[6*6U  
} o^Qy71Uj  
} '25zb+ -  
SortUtil.swap(data,i,lowIndex); <=@6UPsn2  
} ';I(#J6  
} CIAKXYM  
$>hH{  
} ORFi0gFbA  
mX G W+  
Shell排序: :.SwO<j  
C^*}*hYk$  
package org.rut.util.algorithm.support; -+kTw06_C  
@-.Tgpe@a  
import org.rut.util.algorithm.SortUtil; n\u3$nGL1`  
~{q; - &  
/** i7\MVI 8  
* @author treeroot ;TboS-Y  
* @since 2006-2-2 L6J.^tpO  
* @version 1.0 ?6 "B4%7b  
*/ !}=#h8fv  
public class ShellSort implements SortUtil.Sort{ T 2Gscey  
51`*VR]`K  
/* (non-Javadoc) spTIhZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bRI`ZT0  
*/ A{)p#K8  
public void sort(int[] data) { DS0:^TLI  
for(int i=data.length/2;i>2;i/=2){ 0">9n9  
for(int j=0;j insertSort(data,j,i); >g2Z t;*@w  
} vue=K  
} G<`6S5J>hr  
insertSort(data,0,1); _A6e|(.ll  
} q6eD{/4a1  
[y(<1]i-a  
/** OD).kP}s^  
* @param data i?6#>;f  
* @param j 4']eJ==OH  
* @param i .ViOf){U\  
*/ <UbLds{+Uo  
private void insertSort(int[] data, int start, int inc) { L+.-aB2!d  
int temp; d#:7V%]d p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E*VOyH 2[  
} "(vm0@8><  
} t?h\Af4Tf  
} q!<n\X3]u  
Nj+g Sa9  
} SlD7 \X&~  
D()tP  
快速排序: ~-#8j3 J;  
iV.j!H7o  
package org.rut.util.algorithm.support; E$s?)  
}=s64O 9j  
import org.rut.util.algorithm.SortUtil; 0"koZd,c  
d1u6*&@lf  
/** @H8CU!J  
* @author treeroot !z"nJC  
* @since 2006-2-2 /C/I_S}H  
* @version 1.0 ?J28@rM  
*/ Sw~L M&A  
public class QuickSort implements SortUtil.Sort{ :-e[$6}S  
%B04|Q  
/* (non-Javadoc) y#-~L-J_R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) quiX "lV(  
*/ @@#(<[S\B  
public void sort(int[] data) { Wqas1yL_  
quickSort(data,0,data.length-1); )KUEkslR:  
} f|&, SI?  
private void quickSort(int[] data,int i,int j){ FXFyF*w2  
int pivotIndex=(i+j)/2; 1_5]3+r_U-  
file://swap b}Wm-]|+  
SortUtil.swap(data,pivotIndex,j); husk\  
q82yh&  
int k=partition(data,i-1,j,data[j]); H1hADn  
SortUtil.swap(data,k,j); Z1R{'@Y0Z  
if((k-i)>1) quickSort(data,i,k-1); aa/_:V@$~  
if((j-k)>1) quickSort(data,k+1,j); ,W5!=\Gg(  
2\9OT>  
} KvtJ tql;  
/** '?qI_LP?  
* @param data i`7:^v;  
* @param i k;!}nQ&  
* @param j ?Y_!Fr3V  
* @return lh*!f$2 ~  
*/ "1ov<  
private int partition(int[] data, int l, int r,int pivot) { c>L#(D\\  
do{ ^d!I{ y#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #oxP,LR  
SortUtil.swap(data,l,r); "eR-(c1  
} Fqg*H1I[  
while(l SortUtil.swap(data,l,r); (?#"S67  
return l; N.q0D5 :  
} k1Sr7|  
{1[f9uPS  
} tJ Mm  
}W5~89"  
改进后的快速排序: I$JyAj  
_E4_k%8y  
package org.rut.util.algorithm.support; a`8svo;VUO  
(\CH;c-@  
import org.rut.util.algorithm.SortUtil; jF|LPWl  
$im6v  
/** 0hCUr]cZ,  
* @author treeroot /H :Bu  
* @since 2006-2-2 Ed>n/)Sm  
* @version 1.0 |!uC [=  
*/ :\"g}AX  
public class ImprovedQuickSort implements SortUtil.Sort { 5 IFc"  
 K<?[^\  
private static int MAX_STACK_SIZE=4096; $c7Utm s  
private static int THRESHOLD=10; %Hy.  
/* (non-Javadoc) *a@78&N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gu# wH  
*/ =7Sw29u<  
public void sort(int[] data) { k;pU8y6Y  
int[] stack=new int[MAX_STACK_SIZE]; Hw%lT}[O  
ZBXn&Gm  
int top=-1; 0oo*F  
int pivot; ?EA&kZR]  
int pivotIndex,l,r; ee#\XE=A  
T)*tCp]  
stack[++top]=0; Q6=>*}Cm6m  
stack[++top]=data.length-1; YbP}d&L  
8o[+>W  
while(top>0){ 9[Xe|5?c  
int j=stack[top--]; oZ!+._9  
int i=stack[top--]; eNFZD1mS  
qHC/)M#L  
pivotIndex=(i+j)/2; !&5B&w{u~!  
pivot=data[pivotIndex]; Tu-I".d+  
Wo<kKkx2  
SortUtil.swap(data,pivotIndex,j); :0(:}V3z\  
CC XOxd  
file://partition ;-!O+c  
l=i-1; -ei+r#  
r=j; tq2Ti Xo%  
do{ -59;Zn/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;  8u5  
SortUtil.swap(data,l,r); uAv'%/  
} <M M(Z  
while(l SortUtil.swap(data,l,r); fx = %e  
SortUtil.swap(data,l,j); `;z;=A*  
Zie t-@}  
if((l-i)>THRESHOLD){ G|)fZQ1nS  
stack[++top]=i; =xRxr @  
stack[++top]=l-1; j$=MJN0  
} MTeCmFe0;  
if((j-l)>THRESHOLD){ 7hfa?Mcz  
stack[++top]=l+1; R1C2d+L  
stack[++top]=j; Zksow}%  
} I8LoXY  
A:,R.P>`C  
} *sq+ Vc(  
file://new InsertSort().sort(data); 77~l~EX  
insertSort(data); K]yUPx  
} `d!~)D  
/** +*KDtqZjk  
* @param data x*0mmlCb  
*/ BnIZ+fg=  
private void insertSort(int[] data) { +V/mV7FK  
int temp; }BLT2]y0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'kk B>g7B  
} jjJ l\Vn  
} SAGECK[Ix  
} O%rt7qV"g2  
Tg/r V5@ka  
} 07A2@dx  
l5,}yTUta  
归并排序: bb"x^DtT  
,[)f-FmcU  
package org.rut.util.algorithm.support; uqK[p^{  
<PXnR\  
import org.rut.util.algorithm.SortUtil; `zMR?F`  
za [;d4<}k  
/** Rb_+C  
* @author treeroot ?8R  
* @since 2006-2-2 G,A;`:/  
* @version 1.0 LJ mRa  
*/ h/\/dp/tt  
public class MergeSort implements SortUtil.Sort{ >y^zagC*  
,v>| Ub,  
/* (non-Javadoc) mKhlYV n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h!~u^Z.7<  
*/ & *!) d"  
public void sort(int[] data) { 5=9gH  
int[] temp=new int[data.length]; KfMaVU=4P  
mergeSort(data,temp,0,data.length-1); j!hdi-aTU  
} k{B;J\`E;  
 hPgDK.R'  
private void mergeSort(int[] data,int[] temp,int l,int r){ a$h zG-  
int mid=(l+r)/2; jGKasI`  
if(l==r) return ; $ Y_v X 2  
mergeSort(data,temp,l,mid); j[\aGS7u  
mergeSort(data,temp,mid+1,r); /_CSRi&  
for(int i=l;i<=r;i++){ 7s.vJdA]6  
temp=data; A_<1}8{L  
} &Un^ _M  
int i1=l; Pqb])-M9p  
int i2=mid+1; _U/CG<n  
for(int cur=l;cur<=r;cur++){ rc)vVv  
if(i1==mid+1) J-+p]xG  
data[cur]=temp[i2++]; IL N0/eH  
else if(i2>r) p/.[ cH  
data[cur]=temp[i1++]; AcxC$uh  
else if(temp[i1] data[cur]=temp[i1++]; ro*$OLc/  
else O7GJg;>?  
data[cur]=temp[i2++]; L4H5#?'  
} 8cv[|`<  
} a0[Mx 4  
CAV Q[r5y  
}  *"K7<S[  
'Z ,T,zW  
改进后的归并排序: JBvP {5  
)6,Pmq~)  
package org.rut.util.algorithm.support; + q@g  
sH{ 4.tw  
import org.rut.util.algorithm.SortUtil; ik Pm,ZN  
;c~%:|  
/** fN{JLp  
* @author treeroot l/o 4bkV  
* @since 2006-2-2  R7-+@  
* @version 1.0 ejI nJ  
*/ O^yD b  
public class ImprovedMergeSort implements SortUtil.Sort { @$%[D`Wa<  
Zi~-m]9U  
private static final int THRESHOLD = 10; o"./  
n8vteGQ  
/* p:q?8+W-r  
* (non-Javadoc) $Hbd:1%i {  
* VA0p1AD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [^GXHE=  
*/ XZ!^kftyW  
public void sort(int[] data) { ,zU7UL^I  
int[] temp=new int[data.length]; u+/1ryp  
mergeSort(data,temp,0,data.length-1); sFWH*k dP?  
} ,I|TjC5  
&[iunJv:eq  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8ECBi(  
int i, j, k; @&LtIN#  
int mid = (l + r) / 2; %44Z7  
if (l == r) biw2 f~V  
return; g_F-PT>($  
if ((mid - l) >= THRESHOLD) *^b<CZd9  
mergeSort(data, temp, l, mid); ;fnE"}  
else "=ogO/_Q"  
insertSort(data, l, mid - l + 1); 8{ iFxTz  
if ((r - mid) > THRESHOLD) { WW!P,w  
mergeSort(data, temp, mid + 1, r); N J_#;t#j  
else tyyfMA?'L;  
insertSort(data, mid + 1, r - mid); ww(.   
<>  |/U`  
for (i = l; i <= mid; i++) {  ]6 ]Nr  
temp = data; &H<n76G  
} T)"LuC#C  
for (j = 1; j <= r - mid; j++) { mbh;oX+  
temp[r - j + 1] = data[j + mid]; o$,Dh?l  
} <fm0B3i?  
int a = temp[l]; ]iL>Zxex  
int b = temp[r]; *dE5yS`H  
for (i = l, j = r, k = l; k <= r; k++) { :UdH}u!Ek  
if (a < b) { YoEL|r|  
data[k] = temp[i++]; 8F*"z^vD=  
a = temp; ui#K`.dn  
} else { n:d7 Tv1Z8  
data[k] = temp[j--]; z3X:.%  
b = temp[j]; ^~:&/0  
} Y;[#~3CA  
} Udbz;^(  
} +rA:/!b)Y  
3A5:D#  
/** Cvf^3~ q  
* @param data >UUT9:,plA  
* @param l f-b#F2I  
* @param i Ivue"_i;!  
*/ 'HdOW[3o  
private void insertSort(int[] data, int start, int len) { _YM]U`*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;YK{[$F  
} Sx^4Y\\  
} 7w]NG`7  
} -w#Hy>E  
} ?c!W*`yP  
ttaYtV]]  
堆排序: NEG&zf  
ID1/N)5 6  
package org.rut.util.algorithm.support; uY~xHV_-  
v%%;Cp73  
import org.rut.util.algorithm.SortUtil; L% cr `<~  
nB+ e2e&  
/** OG&X7>'3I{  
* @author treeroot .oR_r1\y  
* @since 2006-2-2 `LID*uD;_  
* @version 1.0 R?K[O   
*/ [)&(zJHX  
public class HeapSort implements SortUtil.Sort{ Hlg Q0qb  
a'pJg<  
/* (non-Javadoc) S@'yuAe*G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t:h~p-&QB  
*/ ~>]/1JFz  
public void sort(int[] data) { 6+;B2;*3  
MaxHeap h=new MaxHeap(); JG=U@I]  
h.init(data); d].(x)|st  
for(int i=0;i h.remove(); 0,x<@.pW  
System.arraycopy(h.queue,1,data,0,data.length); 'Oe}Ja  
} "ccP,#Y  
~dO&e=6Hk  
private static class MaxHeap{ z2GT9  
Xw2tCRzD  
void init(int[] data){ ,n &e,I  
this.queue=new int[data.length+1]; `?PpzDV7Y  
for(int i=0;i queue[++size]=data; %bs~%6)  
fixUp(size); gqi|k6V/  
} 5U3 b&0  
} QNzx(IV@  
- #ta/*TT:  
private int size=0; 8eVQnp*  
 HSR^R  
private int[] queue; cI Byv I-  
l$s8O0-'T  
public int get() { %O<  qw  
return queue[1]; :$#"; t|  
} 9W[ ~c"Ku  
I>jDM  
public void remove() { ?\l@k(w4[x  
SortUtil.swap(queue,1,size--); @6roW\'$  
fixDown(1); HP /@ _qk  
} [7:(e/&  
file://fixdown '#fwNbD  
private void fixDown(int k) { 3~%wA(|A  
int j; ?+WSYg0  
while ((j = k << 1) <= size) { BP7&w d  
if (j < size %26amp;%26amp; queue[j] j++; y,`SLgBID  
if (queue[k]>queue[j]) file://不用交换 re `B fN  
break; aNW!Y':*  
SortUtil.swap(queue,j,k); P}El#y#&  
k = j; eI 6G  
} qrj:H4#VB  
} Ak\w)!?s  
private void fixUp(int k) { ]qLro<  
while (k > 1) { ua^gG3n0  
int j = k >> 1; . >{.!a  
if (queue[j]>queue[k]) N>'T"^S/  
break; d1`us G"  
SortUtil.swap(queue,j,k); cTR@ :sm  
k = j; -PI_ *  
} ^nS'3g^"  
} 0{Kb1Ut  
.<!Jhf$  
} K`25G_Y3@  
2bB&/Uumsd  
} <~[ A  
Q0}Sju+HX  
SortUtil: YMSA[hm  
6S~l gH:  
package org.rut.util.algorithm; U#jbii6e  
d`_X$P4y  
import org.rut.util.algorithm.support.BubbleSort; wjr1?c  
import org.rut.util.algorithm.support.HeapSort; ]y3'6!  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6uU2+I  
import org.rut.util.algorithm.support.ImprovedQuickSort; -<'&"-  
import org.rut.util.algorithm.support.InsertSort; > 4zH\T!  
import org.rut.util.algorithm.support.MergeSort; #_, l7q8U  
import org.rut.util.algorithm.support.QuickSort; $Y mD;  
import org.rut.util.algorithm.support.SelectionSort; >q:0w{.TU  
import org.rut.util.algorithm.support.ShellSort; ^E5[~C*o3  
`;@#yyj:_  
/** <]u~;e57  
* @author treeroot C>?`1d@  
* @since 2006-2-2 Qo!/n`19  
* @version 1.0 wuv2bd )+  
*/ %Q}T9%Mtj  
public class SortUtil { <Q4yN!6  
public final static int INSERT = 1; K'`N(WiL  
public final static int BUBBLE = 2; Dt9[uyP&  
public final static int SELECTION = 3; azj:Hru&t#  
public final static int SHELL = 4; jH1!'1s|  
public final static int QUICK = 5; vq df-i  
public final static int IMPROVED_QUICK = 6; X\I"%6$  
public final static int MERGE = 7; drJ<&1O  
public final static int IMPROVED_MERGE = 8; Uv(THxVh  
public final static int HEAP = 9; SLa\F  
2xchjU-  
public static void sort(int[] data) { %D(% lh2  
sort(data, IMPROVED_QUICK); LV:`si K  
} xJvM l`2;  
private static String[] name={ QT5,_+ho  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K#B)@W?9  
}; M-Az2x;6  
<fJ*{$[p  
private static Sort[] impl=new Sort[]{ $_6DvJ0  
new InsertSort(), H)s$0Xd  
new BubbleSort(), L y!!+UM\  
new SelectionSort(), 8H>: C (h  
new ShellSort(), _pX y}D  
new QuickSort(), PTu~PVbp4  
new ImprovedQuickSort(), ;+dB-g[  
new MergeSort(), =]pcC  
new ImprovedMergeSort(), Ax=k0%M[&  
new HeapSort() hJ+;N  
}; ;_yp@.,\T  
l3sL!D1u  
public static String toString(int algorithm){ !$:lv)y  
return name[algorithm-1]; '$]u?m  
} PQmgv&!DP  
; 7`y##  
public static void sort(int[] data, int algorithm) { m)A~1+M$)L  
impl[algorithm-1].sort(data); "Q:m0P xb  
} lbw*T  
n]/7UH}(<&  
public static interface Sort { (z}q6Lfa  
public void sort(int[] data); DQ{Yr>J  
} >f [Lb|t  
 )"im|9  
public static void swap(int[] data, int i, int j) { vwZrvjP2  
int temp = data; ?jywW$   
data = data[j]; < c[+60p"  
data[j] = temp; #6[7q6{ 4  
} ,&II4;F  
} !<wM?Q:  
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