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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。 e6y,)W"WW2  
插入排序: FG @ ')N!g  
rdBF+YN9/?  
package org.rut.util.algorithm.support; h8zl\  
0 v> *P*  
import org.rut.util.algorithm.SortUtil; qGK -f4  
/** z%0'v`7  
* @author treeroot Bsc&#  
* @since 2006-2-2 bw[s<z|LKA  
* @version 1.0 ZNN^  
*/ u|eV'-R)s  
public class InsertSort implements SortUtil.Sort{ zQ>|`0&8   
a`t <R  
/* (non-Javadoc) YYs/r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W3~xjS"h  
*/ xp68-&  
public void sort(int[] data) { d) i64"  
int temp; }bA@QEJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %j4AX  
} sc)}r_|g  
} GB&^<@  
} qh)10*FB  
s k>E(Myo  
} XI/LVP,.  
kaG@T,pH(  
冒泡排序: c8<qn+=%?  
W+5<=jXFB  
package org.rut.util.algorithm.support; fC<pCdsg  
Jb1L[sT2  
import org.rut.util.algorithm.SortUtil; zMI_8lNz  
9o<5Z=  
/** Rv=rO|&]  
* @author treeroot duT'$}2@>  
* @since 2006-2-2 0<4Nf]i  
* @version 1.0 kS)azV  
*/ Xc H_Y  
public class BubbleSort implements SortUtil.Sort{ 0*{ 2^\  
*rH# k?  
/* (non-Javadoc) ;GF+0~5>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o1^Rx5  
*/ $AyE6j_1gX  
public void sort(int[] data) { _Gb O>'kE  
int temp; X={Z5Xxr"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1Ht&;V  
if(data[j] SortUtil.swap(data,j,j-1); kH|cB!?x  
} [,?5}'we  
} XtP5IN\S  
} E,wOWs*  
} ,2MLYW,  
i[V\RKH*F  
} hwj:$mR  
^0T DaZDLp  
选择排序: tsf)+`vt  
d")TH3pG  
package org.rut.util.algorithm.support; gi#g)9HG  
y c:y}"  
import org.rut.util.algorithm.SortUtil; k[<Uxh%  
@q/E)M?  
/** "x~su?KiA  
* @author treeroot >Y 8\I  
* @since 2006-2-2 ]mZN18#  
* @version 1.0 Y)*:'&~2e  
*/ X Z4q{^o  
public class SelectionSort implements SortUtil.Sort { -?}Z0e(w  
&cuDGo.  
/* 3-6Lbe9H  
* (non-Javadoc) Q*K31Ln  
* !U[/P6 +0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "xxt_  
*/ SpJIEw  
public void sort(int[] data) { hztxsvw  
int temp; jn,_Ncd#  
for (int i = 0; i < data.length; i++) { '5; /V  
int lowIndex = i;  U rL|r.  
for (int j = data.length - 1; j > i; j--) { L<H zPg  
if (data[j] < data[lowIndex]) { LAjreC<W  
lowIndex = j; RIV + _}R  
} FhJtiw@  
} bg/a5$t  
SortUtil.swap(data,i,lowIndex); |SSe n#PYp  
} <!G%P4)  
} [L`w nP  
$Si|;j$?  
} /kH 7I  
e?yrx6  
Shell排序: /c|X:F!;X#  
RTQtXv6mD  
package org.rut.util.algorithm.support; 5!jU i9  
3Q:HzqG  
import org.rut.util.algorithm.SortUtil; {"WfA  
hRaX!QcG3  
/** 2uT"LW/(H  
* @author treeroot 8D:0Vhx\I  
* @since 2006-2-2 Y:#nk.}>  
* @version 1.0 oUNuM%g9Dy  
*/ Dhze2q)o  
public class ShellSort implements SortUtil.Sort{ lNbAt4]}f(  
0 qp Pz|h  
/* (non-Javadoc) /^rJ`M[;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Mm1yXNu  
*/ /#-zI#iK  
public void sort(int[] data) { .u3Z*+  
for(int i=data.length/2;i>2;i/=2){ peD7X:K\s  
for(int j=0;j insertSort(data,j,i); ^SvGSx i  
} /Dj-@7.C/  
} -J]j=  
insertSort(data,0,1); <1eD*sC?g  
} _2~+%{/m,  
 P0<)E  
/** H{U(Rt]K  
* @param data 5[0W+W  
* @param j 'izv[{!n{  
* @param i /|LQ?n  
*/ z{wZLqG  
private void insertSort(int[] data, int start, int inc) { }/J<#}t  
int temp; GzEvp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %*a%F~Ss  
} FT[of(g^  
} M.u1SB0  
} |YcYWok  
?X^.2+]*&  
} i#K Y'"P  
]Il}ymkIZ  
快速排序: 8/"R&yAh  
k, >*.Yoh  
package org.rut.util.algorithm.support; (MzThGJK_  
=k\Qx),Ir  
import org.rut.util.algorithm.SortUtil; )Nt'Z*K*  
ZO8r8 [  
/** 'BX U '  
* @author treeroot D $&6 8  
* @since 2006-2-2 .g>0FP  
* @version 1.0 )~be<G( a  
*/ $Y?[[>u  
public class QuickSort implements SortUtil.Sort{ fM!@cph(8  
1qm _Qs&  
/* (non-Javadoc) {xu~Dx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o7kQ&w   
*/ #ja6nt8GC  
public void sort(int[] data) { &6&$vF65c  
quickSort(data,0,data.length-1); l&{+3aC:  
} OICH:(t_  
private void quickSort(int[] data,int i,int j){ MmH(dp+  
int pivotIndex=(i+j)/2; Y$0K}`{  
file://swap r*f:%epB%  
SortUtil.swap(data,pivotIndex,j); d$B+xW  
WXFC e@  
int k=partition(data,i-1,j,data[j]); 3eN(Sw@p  
SortUtil.swap(data,k,j); 4Ul*`/d  
if((k-i)>1) quickSort(data,i,k-1); ~tZy-1  
if((j-k)>1) quickSort(data,k+1,j); t*wV<b  
 Q5 =  
} [PH56f  
/** "sJ@_lp  
* @param data }e-D&U  
* @param i ffG1QvC|M  
* @param j &UIS17cT  
* @return F5 7Kr5X  
*/ 1 EwCF  
private int partition(int[] data, int l, int r,int pivot) { jhB+ ]  
do{ Z> <,t~o}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S.|%dz  
SortUtil.swap(data,l,r); ;nw}x4Y[  
} H,Yrk(O-  
while(l SortUtil.swap(data,l,r); f{+X0Oj  
return l; tvOyT6]  
} M5c *vs  
 U92?e}=]  
} sNsH l  
$D;-;5[-/r  
改进后的快速排序: :wz]d ~)  
QRHM#v S  
package org.rut.util.algorithm.support; cF}9ldc  
T)mh  
import org.rut.util.algorithm.SortUtil; |vY|jaV}  
:u|F>e  
/** ,+!|~1  
* @author treeroot qF4=MQm\aE  
* @since 2006-2-2 TGzs|-  
* @version 1.0 -?1ed|I8  
*/ rnQ9uNAu  
public class ImprovedQuickSort implements SortUtil.Sort { o?><(A|  
MZS/o3  
private static int MAX_STACK_SIZE=4096; } QpyU%  
private static int THRESHOLD=10; 3Gt@Fo=  
/* (non-Javadoc) Fiaeo0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rq|>z.  
*/ 9 =D13s(C  
public void sort(int[] data) { 9d8U@=  
int[] stack=new int[MAX_STACK_SIZE]; %B(E;t63W  
K}8wCS F  
int top=-1; \9k{h08s  
int pivot; Z&5cJk W  
int pivotIndex,l,r; /_i]bM7W  
$!K,5^+  
stack[++top]=0; k(dNHT  
stack[++top]=data.length-1; $: qrh66  
O4T_p=Xc  
while(top>0){ Idr|-s%l6'  
int j=stack[top--]; ;fB!/u  
int i=stack[top--]; 8_{XrTw(  
{jo"@&2S  
pivotIndex=(i+j)/2; Y|L]#  
pivot=data[pivotIndex]; 85ND 3F6q4  
5](,N^u{):  
SortUtil.swap(data,pivotIndex,j); #Kt5+"+7  
=po5Q6@i  
file://partition +?+iVLr!l}  
l=i-1; pXf5/u8&  
r=j; oD_#oX5\  
do{ jN{+$ @cI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PjkjUP  
SortUtil.swap(data,l,r); cWp5pGIzfp  
} FmhN*ZXr #  
while(l SortUtil.swap(data,l,r); z6'l" D'h  
SortUtil.swap(data,l,j); L87=*_!B;  
%i@Jw  
if((l-i)>THRESHOLD){ >:P-3#e*  
stack[++top]=i; CM 8Ub%  
stack[++top]=l-1; rQ&F Gb  
} g&O!w!T  
if((j-l)>THRESHOLD){ +A<7:`sO  
stack[++top]=l+1; -XWlmw*i(g  
stack[++top]=j; ty b-VO  
} yOE N*^6  
^vc#)tm5p  
} uY:u[  
file://new InsertSort().sort(data); J#Agk^Y 5  
insertSort(data); V#\iO  
} g42f*~l  
/** aKw7m= {  
* @param data _}Ec[c  
*/ gkld}t*U  
private void insertSort(int[] data) { m ?jF:] ^  
int temp; kRB2J3Nt.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %-3wR@  
} y5N,~@$r  
} ;\gHFG}  
} y-vQ4G5F|  
Te@=8-u-  
} rNeSg=j  
zwdi$rM5  
归并排序: Q9sxI}D )R  
\O+Hmi^  
package org.rut.util.algorithm.support; X;3gKiD  
>?ckBU9  
import org.rut.util.algorithm.SortUtil; ,{sCI/  
*+>QKR7  
/** +t p@Tb  
* @author treeroot 7_ao?}g  
* @since 2006-2-2 zzZ K S  
* @version 1.0 ~4u[\&Sh  
*/ Yjix]lUXVf  
public class MergeSort implements SortUtil.Sort{ X XC(R  
Cm[^+.=I  
/* (non-Javadoc) sU;aA0kz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E(0[/N~  
*/ j/w*2+&v  
public void sort(int[] data) { Q#sLIZ8=  
int[] temp=new int[data.length]; laGIu0s {  
mergeSort(data,temp,0,data.length-1); _A=Pr _kN  
} !KmSLr7xU  
!T1)tGrH  
private void mergeSort(int[] data,int[] temp,int l,int r){ !z?;L_Lb  
int mid=(l+r)/2; A9ru]|?  
if(l==r) return ; %<;PEQQ|C  
mergeSort(data,temp,l,mid); _2nNCu (  
mergeSort(data,temp,mid+1,r); }yMA s  
for(int i=l;i<=r;i++){ n]snD1?KX  
temp=data; ZR@PqS+O/  
} N.|uPq$R  
int i1=l; DeGcS1_?  
int i2=mid+1; hV[=  
for(int cur=l;cur<=r;cur++){ "[wP1n!G  
if(i1==mid+1) "yc@_+"\+  
data[cur]=temp[i2++]; o7t#yw3  
else if(i2>r) }XIUz|  
data[cur]=temp[i1++]; "78BApjWT6  
else if(temp[i1] data[cur]=temp[i1++]; rWxQ;bb#  
else 75RQ\_zDu  
data[cur]=temp[i2++]; SD=9fh0l  
} w$[ck=  
} aDVBi: _  
TZ]o6Bb  
} jt4c*0z  
<h mRr  
改进后的归并排序: IjnO2X  
Qj(|uGqm3  
package org.rut.util.algorithm.support; F!~oJ  
QOKE9R#Y  
import org.rut.util.algorithm.SortUtil; _.K<#S  
av4g/7=  
/** ip2BvN&  
* @author treeroot {igVuZ(>en  
* @since 2006-2-2 E:S (v  
* @version 1.0 kc}&\y  
*/ g;t>jgX  
public class ImprovedMergeSort implements SortUtil.Sort { G| .5.FK^  
1g bqHxWI  
private static final int THRESHOLD = 10; -+Ab[  
s.K Hm L3  
/* Sz'JOBp  
* (non-Javadoc) ad'C&^o5  
* t+m ug  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -KFozwr5/  
*/ `=VN\W^&  
public void sort(int[] data) { m{ C  
int[] temp=new int[data.length]; Y+ea  
mergeSort(data,temp,0,data.length-1); 9ZXEy }q57  
} 3ew`e"s  
"`aLSw75x  
private void mergeSort(int[] data, int[] temp, int l, int r) { R[{s\  
int i, j, k; PxiJ R[a  
int mid = (l + r) / 2; <t)D`nY\  
if (l == r) )|CF)T-  
return; kSH|+K\M4  
if ((mid - l) >= THRESHOLD) !(-S?*64l  
mergeSort(data, temp, l, mid); :igURr  
else V j"B/@  
insertSort(data, l, mid - l + 1); j SXVLyz  
if ((r - mid) > THRESHOLD) y%=t((.Z  
mergeSort(data, temp, mid + 1, r); Cz]NSG5  
else )%=oJ!)  
insertSort(data, mid + 1, r - mid); Q R<q[@)F  
4l`"P~=2<  
for (i = l; i <= mid; i++) { :;u?TFCRx  
temp = data; 89X`U)Ws  
} "L~qsFL  
for (j = 1; j <= r - mid; j++) { sQ>L3F;A`  
temp[r - j + 1] = data[j + mid]; ~ (/OB w  
} S6bW?8`  
int a = temp[l]; ?Z[`sm  
int b = temp[r]; >{huaN B  
for (i = l, j = r, k = l; k <= r; k++) { ew{(@p+$  
if (a < b) { Qg' {RAV8  
data[k] = temp[i++]; (2fWJ%7VG  
a = temp; Rw#4 |&  
} else { c2d=dGP>~f  
data[k] = temp[j--]; !e0~|8  
b = temp[j]; ibIo1i//[  
} (!^; ar^  
} AQa;D2B$  
} d-sK{ZC"y  
T`gR&n<D  
/** XlHt(d0h  
* @param data 1T@#gE["Ic  
* @param l o2#_CdU   
* @param i ^-GzWT  
*/ M5>cYVG  
private void insertSort(int[] data, int start, int len) { t?<pyw $  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7"0l>0 \  
} k x26nDT(  
} Y}Gf%Xi,  
} YdNmnB %J  
} lay)I11- >  
,2?Sua/LD  
堆排序: )S 2GPn7  
7U_OUUg  
package org.rut.util.algorithm.support; |SfmQ;  
9et%Hn.K'  
import org.rut.util.algorithm.SortUtil; N5\]VCX  
@XR N#_{  
/** iR(jCD?) Y  
* @author treeroot J5 2- qR/  
* @since 2006-2-2 n~|sMpd,M1  
* @version 1.0 01/yog  
*/ _BP!{~&;  
public class HeapSort implements SortUtil.Sort{ m"y_@Jk  
L?slIGp%-  
/* (non-Javadoc) 0k\BE\PQk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1L\\](^ 3  
*/ #2\ 0#HN  
public void sort(int[] data) { xpjv @P  
MaxHeap h=new MaxHeap(); Q5~Y;0'  
h.init(data); D?:AHj%gW  
for(int i=0;i h.remove(); ?<"H Io  
System.arraycopy(h.queue,1,data,0,data.length); s2rwFj8 |  
} wz{]CQ7"  
wW?/`>@  
private static class MaxHeap{ vjz*B$  
Gl@}b\TB  
void init(int[] data){ JNZ  O7s  
this.queue=new int[data.length+1]; mM6X0aM  
for(int i=0;i queue[++size]=data; i{+W62k*  
fixUp(size); Sdn4y(&TP  
} Td"_To@jd  
} 7_*k<W7|  
]> dCt<  
private int size=0; "ke>O'   
g=5vnY  
private int[] queue; XV|u!'Ey  
3+>;$  
public int get() { %SHgXd#X  
return queue[1]; v62M8r,Y  
} dNg5#?mzT5  
?@uyqi~:U  
public void remove() { C0> Z<z  
SortUtil.swap(queue,1,size--); 'l7ey3B%  
fixDown(1); 4gkaCk{]  
} U.,_zEbx,  
file://fixdown ^vA"3Ixb!  
private void fixDown(int k) { $>csm  
int j; }> pNf  
while ((j = k << 1) <= size) { luj UEHzp  
if (j < size %26amp;%26amp; queue[j] j++; 7j22KQ|EX^  
if (queue[k]>queue[j]) file://不用交换 Z\9DtvV  
break; gfY1:0  
SortUtil.swap(queue,j,k); BhcTPQsW  
k = j; MJDW-KL-  
} 44p?x8(z*  
} 8,^2'dK34  
private void fixUp(int k) { MaS"V`NI  
while (k > 1) { 8,DY0PGP  
int j = k >> 1; 9J $"Qt5;6  
if (queue[j]>queue[k]) (0W)Jd[  
break; 9yrSCDu00  
SortUtil.swap(queue,j,k); oZCjci-  
k = j; xP61^*-2  
} lc qpwSk  
} _q7mYc  
dbG5Cf#K\  
} fDU_eyt/Z'  
;?K>dWf3f  
} } S,KUH.  
2QN ~E  
SortUtil: zlhHSyK  
nQ5N\RAZ  
package org.rut.util.algorithm; z 7 s&7)a  
J% mtlA  
import org.rut.util.algorithm.support.BubbleSort; C1ZuDL)e  
import org.rut.util.algorithm.support.HeapSort; o NqIrYH'  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]?3-;D.eG  
import org.rut.util.algorithm.support.ImprovedQuickSort; J'H}e F`  
import org.rut.util.algorithm.support.InsertSort; n&N>$c,T27  
import org.rut.util.algorithm.support.MergeSort; k`u.:C&  
import org.rut.util.algorithm.support.QuickSort; ObyF~j}j  
import org.rut.util.algorithm.support.SelectionSort; ["65\GI?  
import org.rut.util.algorithm.support.ShellSort; DbIn3/W Ne  
'] $mt  
/** FIEA 'kUy  
* @author treeroot OKO+(>A Q  
* @since 2006-2-2 |K,[[D<R  
* @version 1.0 .s8u?1b  
*/ u#^~([ I  
public class SortUtil { aSVR +of  
public final static int INSERT = 1; j+6`nN7L  
public final static int BUBBLE = 2; pHKGK7 S-  
public final static int SELECTION = 3; 8`GN8 F  
public final static int SHELL = 4; &RL j^A!  
public final static int QUICK = 5; NB=!1;^J  
public final static int IMPROVED_QUICK = 6; 6 #m:=  
public final static int MERGE = 7; T_NN.Ol   
public final static int IMPROVED_MERGE = 8; qvN`46c  
public final static int HEAP = 9;  aWTvowA  
PC55A1(T  
public static void sort(int[] data) { i~sW_f+  
sort(data, IMPROVED_QUICK); vZJu =t  
} 1 LUvs~Qu  
private static String[] name={ *ud/'HR8]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t8_i[Hw6D  
}; )~LqBh  
>9i%Yuy](  
private static Sort[] impl=new Sort[]{ l/6$BP U`  
new InsertSort(), t[=teB v<  
new BubbleSort(), ,E3Ze*(U  
new SelectionSort(), ^EF VjGM  
new ShellSort(), fB"It~ p  
new QuickSort(), <]wQ;14;H  
new ImprovedQuickSort(), FesUE_L2$  
new MergeSort(), O;C C(  
new ImprovedMergeSort(), 1}XESAX;0  
new HeapSort() u|EHe"V"  
}; 25wvB@0&  
Jnl#d0) -  
public static String toString(int algorithm){ &wea]./B  
return name[algorithm-1]; Zg;%$ kSQ  
} yD:}&!\}  
[Zj6v a  
public static void sort(int[] data, int algorithm) { ^nGKuW7\  
impl[algorithm-1].sort(data); Z.E@aml\  
} =?oYEO7  
3`U^sr:[%  
public static interface Sort { m#a1N  
public void sort(int[] data); =}wqo6Bn|  
} 8Luw< Q  
,WgEl4  
public static void swap(int[] data, int i, int j) { ]GH_;  
int temp = data; *h4x`luJ  
data = data[j]; RM6*c .  
data[j] = temp; _sX@BE  
} /pYp, ak  
} D\-D ~G]x  
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