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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。 A6_ER&9$>N  
插入排序: %CQa8<q  
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package org.rut.util.algorithm.support; SLkgIb~'X  
bSI*`Dc"!  
import org.rut.util.algorithm.SortUtil; G DBV  
/** e]!`94f  
* @author treeroot s]=XAm"4  
* @since 2006-2-2 ixM#|Yq  
* @version 1.0 ?^-fivzS>  
*/ h^IizrqU  
public class InsertSort implements SortUtil.Sort{ c3fi<?0&|  
2HE<WI^#h  
/* (non-Javadoc) Xeis_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Y.yl F:  
*/ T[[E)f1[  
public void sort(int[] data) { FR50y+h^$  
int temp; 9P <1/W!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \N?lG q  
} %ByqkY{5F  
} DD7D&@As  
} UDk H'x$=  
+('xzW  
} Xsb.xxK.  
s;Zi   
冒泡排序:  56C'<#  
_8`S&[E?  
package org.rut.util.algorithm.support; P%w!4v ~"  
M9VAs~&S  
import org.rut.util.algorithm.SortUtil; OHngpe4  
g p|G q  
/** 9XS>;<"2  
* @author treeroot `tHF}  
* @since 2006-2-2 =VWH8w.3  
* @version 1.0 YyYp-0#  
*/ l'!_km0{d  
public class BubbleSort implements SortUtil.Sort{ %dmQmO,  
I L&PN`#  
/* (non-Javadoc) u[wDOw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ij?]fXf:)y  
*/ QRdtr  
public void sort(int[] data) { z:Ru`  
int temp; A5}N[|z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ==KDr 0|G  
if(data[j] SortUtil.swap(data,j,j-1); VL\Ah3+  
} >W:kTS<  
} 2I=4l  
} )h(=X&(d  
} 8-L -W[  
|a0@4 :  
} p4uObK,  
2B6y1"B  
选择排序: {Aj=Rj@  
JGhK8E  
package org.rut.util.algorithm.support; A i#~Eu*  
FhEfW7]0,  
import org.rut.util.algorithm.SortUtil; [W'2z,S`WD  
'OhGSs|  
/** @Ko}Td&E(  
* @author treeroot ! v%%_sRV  
* @since 2006-2-2 +WxD=|p;  
* @version 1.0 lH,/N4 r*&  
*/ [m<8SOMG(  
public class SelectionSort implements SortUtil.Sort { C1YH\ X(r  
n;.);  
/* HXB & 6  
* (non-Javadoc) 77]Fp(uI  
* d<cQYI4V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~^3U@( :  
*/ BQgK<_  
public void sort(int[] data) { M;.:YkrUH  
int temp; 7Sycy#D  
for (int i = 0; i < data.length; i++) { p{0rHu[  
int lowIndex = i; %NhZTmWm  
for (int j = data.length - 1; j > i; j--) { 0)vX  
if (data[j] < data[lowIndex]) { 6D4u?P,  
lowIndex = j; `Z@qWB<  
} ?O#"x{Pk  
} Jd|E 4h~(  
SortUtil.swap(data,i,lowIndex); <5|:QLqy  
} '_n$xfH  
} 0e'@Xo2e  
[GW;RjPE  
} 7X/B9Hee  
x)kp*^/  
Shell排序: YO.+ 06X  
99Nm?$ g  
package org.rut.util.algorithm.support; *APTgXYR  
a0wpsl iF  
import org.rut.util.algorithm.SortUtil; UtB~joaR  
CY@#_z  
/** Q\le3KB  
* @author treeroot #.@D}7y5  
* @since 2006-2-2 kbx4I?  
* @version 1.0 al]-*=v7}  
*/ Cj6$W5I m  
public class ShellSort implements SortUtil.Sort{ EHq?yj;  
>\1j`/ :ZI  
/* (non-Javadoc) [@$t35t~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7t% |s!~  
*/ Ch&2{ ng  
public void sort(int[] data) { ?ieC>cr  
for(int i=data.length/2;i>2;i/=2){ bqZ5GKUo  
for(int j=0;j insertSort(data,j,i); s";9G^:  
} Xf|I=XK  
} N*}g+ IS  
insertSort(data,0,1); H7Ee0T(`  
} Y c>.P  
`Y<FR  
/** mx0EEU*  
* @param data >Cglhsb:N  
* @param j Fau24-g  
* @param i MB?762 Q  
*/ 8SO(pw9  
private void insertSort(int[] data, int start, int inc) { KN\tRE  
int temp; ]M&KUgz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >yt8gw0J  
} vq5o?$:-  
} ";w"dfC^  
} (5=B^9{R  
{= T9_c  
} Y$eO:67;  
lMb&F[KJ7  
快速排序: -=4:qQEw  
mA\}zLw+r9  
package org.rut.util.algorithm.support; C.=[K_  
pb|,rLNZ  
import org.rut.util.algorithm.SortUtil; AKUmh  
c"S{5xh0&  
/** 2?(dS  
* @author treeroot z~RE}k  
* @since 2006-2-2 :>m67Zq  
* @version 1.0 +nQp_a1{9%  
*/ a`;nB E  
public class QuickSort implements SortUtil.Sort{ ^[hx`Rh`t  
03dmHg.E!E  
/* (non-Javadoc) &^K,"a{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _h P7hhR  
*/ 7^]KQ2fF 8  
public void sort(int[] data) { & ]1gx#  
quickSort(data,0,data.length-1); 2Afg.-7EP  
} LVBE+{P\5?  
private void quickSort(int[] data,int i,int j){ )SWLX\b  
int pivotIndex=(i+j)/2; ![aa@nOSa  
file://swap K\^S>dV  
SortUtil.swap(data,pivotIndex,j); .]K{8[:hq  
X32{y973hT  
int k=partition(data,i-1,j,data[j]); 9 EV.![  
SortUtil.swap(data,k,j); yz^Rm2$f9  
if((k-i)>1) quickSort(data,i,k-1); mW 'sdb  
if((j-k)>1) quickSort(data,k+1,j); '0jn|9l58  
Dq9*il;'  
} !,JV<( 7k  
/** 3 V0^v  
* @param data ,^&amWey  
* @param i Ox&]{  
* @param j C"g bol^  
* @return *w23(f  
*/ Nu7lPEM  
private int partition(int[] data, int l, int r,int pivot) { %"BJW  
do{ g,}_&+q:.M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }\aJ%9X02  
SortUtil.swap(data,l,r); 'Em633  
} =r>u'wRQ  
while(l SortUtil.swap(data,l,r); nm]m!.$d  
return l; Isg\ fSK<j  
} em?Q4t  
L}pj+xB  
} c4(og|ifk  
ow K)]t  
改进后的快速排序: `-w;/A"MJ  
4~z-&>%  
package org.rut.util.algorithm.support; 3?bTs =  
^.@F1k  
import org.rut.util.algorithm.SortUtil; ?dAy_| zD  
v] hu5t  
/** @ x5LrQ_`r  
* @author treeroot b-HELS`nX  
* @since 2006-2-2 C,VvbB  
* @version 1.0 E5g|*M.+f  
*/ &ZI-#(P  
public class ImprovedQuickSort implements SortUtil.Sort { zAH6SaI$  
|?4NlB6  
private static int MAX_STACK_SIZE=4096; "WzD+<oL  
private static int THRESHOLD=10; -nDY3$U/  
/* (non-Javadoc) b>L?0p$ej  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r&Qq,koE  
*/ V3q [ $~9  
public void sort(int[] data) { tYMPqP,1.  
int[] stack=new int[MAX_STACK_SIZE]; 1}3tpO;  
`{9bf)vP6  
int top=-1; |Jny0a/0  
int pivot; `zsooA Gt  
int pivotIndex,l,r; eR:C?v  
W7"UhM  
stack[++top]=0; )w,<XJhg`  
stack[++top]=data.length-1; r>B|JPm  
:?SD#Vvrh.  
while(top>0){ !TLJk]7uC  
int j=stack[top--]; )F,z pGG  
int i=stack[top--]; %`}nP3  
U[W &D%'  
pivotIndex=(i+j)/2; dK>sHUu  
pivot=data[pivotIndex]; LyRW\\z2  
S9d Xkd  
SortUtil.swap(data,pivotIndex,j); KRb'kW  
1\-r5e; BE  
file://partition jR>`Xz  
l=i-1; -.l.@  
r=j; IO<Ds#(  
do{ i7%`}t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %{ory5  
SortUtil.swap(data,l,r); kbZpi`w  
} ]Wtg.y6;  
while(l SortUtil.swap(data,l,r); I %|;M%B  
SortUtil.swap(data,l,j); in`|.#  
^o4](l  
if((l-i)>THRESHOLD){ 3? F~ H  
stack[++top]=i; u9N /9  
stack[++top]=l-1; NiD_v  
} 'zOB!QqA`v  
if((j-l)>THRESHOLD){ HYl~)O>  
stack[++top]=l+1; 4`Lr^q}M+  
stack[++top]=j; ZP '0=  
} HJJ; gTj  
O~m Q\GlW  
} 2WC$r8E  
file://new InsertSort().sort(data); *U +<Hv`C  
insertSort(data); jcHyRR1R  
} lcK4 Uq\q  
/** 0[E \h   
* @param data ~bsdy2&/q  
*/ ^G4@cR.An  
private void insertSort(int[] data) { z `jLKPP!=  
int temp; f4$sH/ 2#v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R5&<\RI0  
} kLc@U~M  
} R]3j6\  
} J vq)%t8q>  
`R!Q(rePx  
} nf1O8FwRb  
WjOP2CVv|  
归并排序: $$i Gs6az  
#n]K$k>  
package org.rut.util.algorithm.support; [:+f Y[4==  
TjHt:%7.  
import org.rut.util.algorithm.SortUtil; j8c5_&  
C-XJe~  
/** 6q^\pJY%&7  
* @author treeroot hbEqb{#}@  
* @since 2006-2-2 #4<=Ira5  
* @version 1.0 g'cVsO)S  
*/ aW9\h_$  
public class MergeSort implements SortUtil.Sort{ xjD."q  
X 8):R- J  
/* (non-Javadoc) kPoz&e_@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9sI&d  
*/ *7b?.{  
public void sort(int[] data) { nw(R=C  
int[] temp=new int[data.length]; vo(:g6$  
mergeSort(data,temp,0,data.length-1); ?TJ4L/"(k6  
} f3S 8~!  
*W;;L_V"   
private void mergeSort(int[] data,int[] temp,int l,int r){ TbLU[(m-n  
int mid=(l+r)/2; (,KzyR=*'  
if(l==r) return ; Rh#`AM`)j  
mergeSort(data,temp,l,mid); oW^>J-  
mergeSort(data,temp,mid+1,r); 5zh6l+S[  
for(int i=l;i<=r;i++){ +s^nT{B@\  
temp=data; a~?B/ g&_  
} AN3oh1xe:  
int i1=l; z?pi /`y8>  
int i2=mid+1; 8 Vf #t!t  
for(int cur=l;cur<=r;cur++){ Kj)sL0  
if(i1==mid+1) 41P0)o  
data[cur]=temp[i2++]; >'4$g7o,  
else if(i2>r) RA?_j$  
data[cur]=temp[i1++]; 9MH;=88q  
else if(temp[i1] data[cur]=temp[i1++]; ^+~ 5\c*  
else $0vWC#.A]  
data[cur]=temp[i2++]; Y% JE})  
} yEk|(6+^  
} wE"lk  
kR3wbA  
} Xu E' %;:  
&nwS7n1eb  
改进后的归并排序: pU'${Z~b  
M?DZShkV_  
package org.rut.util.algorithm.support; /q}(KJX  
/nsBUM[;  
import org.rut.util.algorithm.SortUtil; HDTA`h?t;  
[+QyKyhTO  
/** `wZ  
* @author treeroot y5F"JjQAa  
* @since 2006-2-2 Hpa6; eT  
* @version 1.0 w,up`W7,  
*/ K\xnQeS<W  
public class ImprovedMergeSort implements SortUtil.Sort { QT zN  
`JY+3d,Ui  
private static final int THRESHOLD = 10; E)`0(Z:E  
/KNR;n'  
/* *rbgDaQ  
* (non-Javadoc) &-{%G=5~e%  
* M$Bb,s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QmSMDWkh  
*/ 'n>44_7L  
public void sort(int[] data) { %hN(79:g  
int[] temp=new int[data.length]; ,i|K} Y&  
mergeSort(data,temp,0,data.length-1); E_I-.o|  
} pJs`/   
,A $IFE  
private void mergeSort(int[] data, int[] temp, int l, int r) { (F 9P1Iq  
int i, j, k; rsa_)iBC  
int mid = (l + r) / 2; U;IGV~oT  
if (l == r) MgJ5FRQ  
return; Ook\CK*nKe  
if ((mid - l) >= THRESHOLD) CM$&XJzva  
mergeSort(data, temp, l, mid); rk4KAX_[  
else :*BN>*1^\r  
insertSort(data, l, mid - l + 1); :3XvHL0rx  
if ((r - mid) > THRESHOLD) _'1 7C /  
mergeSort(data, temp, mid + 1, r); 4n@>gW  
else he/rt#  
insertSort(data, mid + 1, r - mid); pdER#7Tq  
e$P^},0/  
for (i = l; i <= mid; i++) { D\+x/r?-I  
temp = data; 4H;7GNu  
} GD)paTwO<  
for (j = 1; j <= r - mid; j++) { ,YjjL  
temp[r - j + 1] = data[j + mid]; 04&S.#+(  
} qo 7<g*kf~  
int a = temp[l]; Mpyza%zj  
int b = temp[r]; !/tV}.*  
for (i = l, j = r, k = l; k <= r; k++) { yUD@oOVC0  
if (a < b) { YgjW%q   
data[k] = temp[i++]; .a :7|L#a  
a = temp; ,jeHL@>w[  
} else { 74:( -vS  
data[k] = temp[j--]; !vRN'/(Vyu  
b = temp[j]; N\&VJc  
} 2;*G!rE&*`  
} 0tL5t7/Gr  
} d }fd^x/  
EPLHw  
/** <*z'sUh+}  
* @param data ,r~^<m  
* @param l {d'B._#i  
* @param i ?lgE9I]  
*/ r>|S4O  
private void insertSort(int[] data, int start, int len) { X_nbNql  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Oi& 9FS  
} Sin)]zG~0  
} UMBeY[ ?  
} G~.VW48{n  
} x=a#|]ngG  
y7CXE6Y  
堆排序: 9z{}DBA  
M,p0wsj;  
package org.rut.util.algorithm.support; #y7MB6-  
rA8NE>  
import org.rut.util.algorithm.SortUtil; RA!m,"RM  
mt0v (  
/** i <gt`UCO  
* @author treeroot 04=RoYMM  
* @since 2006-2-2 ^`dMjeF  
* @version 1.0 *oIIcE4g7  
*/ W ^Fkjqpv  
public class HeapSort implements SortUtil.Sort{ fV7 k{dR  
2?Ryk`2i)  
/* (non-Javadoc) U?|A3;,xh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !BrZTo  
*/ 9}2/ko  
public void sort(int[] data) { e@vZg8Ie  
MaxHeap h=new MaxHeap(); g#l!b%$  
h.init(data); 35AH|U7b  
for(int i=0;i h.remove(); tC$+;_=+F  
System.arraycopy(h.queue,1,data,0,data.length); j|o/>^ 'e  
} ? eI)m  
n} !')r  
private static class MaxHeap{ /Us+>vg!  
dc~vQDNw[X  
void init(int[] data){ K%BFR,)g  
this.queue=new int[data.length+1]; ^/Yk*Ny  
for(int i=0;i queue[++size]=data; ^t<L  
fixUp(size); ;,TT!vea  
} --TH6j"  
} n%;tVa  
fM:bXR2Y'  
private int size=0; kO^  
2,B^OZmw  
private int[] queue; ~Ni-}p  
Wt!;Y,1 s  
public int get() { imwn)]LR  
return queue[1]; kn HrMD;  
} XAF]B,h=  
%jq R^F:J  
public void remove() { xDekC~ Zq  
SortUtil.swap(queue,1,size--); Bqa_l|  
fixDown(1); @W(,|xES  
} jL5O{R[ x:  
file://fixdown ^tm2Duv  
private void fixDown(int k) { ;UX9Em  
int j; >dF #1  
while ((j = k << 1) <= size) { GpO@1 C/  
if (j < size %26amp;%26amp; queue[j] j++; _h=h43'3  
if (queue[k]>queue[j]) file://不用交换 #q0xlF@  
break; #\Q)7pgi.  
SortUtil.swap(queue,j,k); W0U|XX!&  
k = j; F/A)2 H_  
} CnY dj~  
} 4U)%JK.ta  
private void fixUp(int k) { j9RpYz  
while (k > 1) { kIt1kw  
int j = k >> 1; e*Nm[*@UW  
if (queue[j]>queue[k]) [vY)y\W{  
break; EOqV5$+  
SortUtil.swap(queue,j,k); ji ,`?  
k = j; >2mY%  
} _ J"J[$  
} biffBC:q  
ahM? ;p  
} c- @EHv  
yFFNzw{  
} T%}x%9VO7  
+{)V%"{u:  
SortUtil: |?' gT" #  
vl%Pg !l  
package org.rut.util.algorithm; 7#*O|t/'  
aM8z_j!!u  
import org.rut.util.algorithm.support.BubbleSort; &|zV Wl  
import org.rut.util.algorithm.support.HeapSort; 5KYR"-jY  
import org.rut.util.algorithm.support.ImprovedMergeSort; waV4~BdL  
import org.rut.util.algorithm.support.ImprovedQuickSort; K~5(j{Kb8  
import org.rut.util.algorithm.support.InsertSort; ,0>_(5  
import org.rut.util.algorithm.support.MergeSort; X)[QEq^  
import org.rut.util.algorithm.support.QuickSort; ;%u)~3B$JK  
import org.rut.util.algorithm.support.SelectionSort; dwzk+@]8  
import org.rut.util.algorithm.support.ShellSort; u8y('\(  
2@ZuH^qhk  
/** CFY4PuI"!  
* @author treeroot W$" >\A0%  
* @since 2006-2-2 !$o9:[B  
* @version 1.0 E/ku VZX  
*/ j z&=8  
public class SortUtil { &hhxp1B  
public final static int INSERT = 1; Rg~[X5  
public final static int BUBBLE = 2; \nVoBW(  
public final static int SELECTION = 3; _&@cU<bdee  
public final static int SHELL = 4; uk.x1*0x  
public final static int QUICK = 5; i2Gh!5]f  
public final static int IMPROVED_QUICK = 6; H{d/%}7[v  
public final static int MERGE = 7; U.W Mu%  
public final static int IMPROVED_MERGE = 8; k}{K7,DM  
public final static int HEAP = 9; n^epC>a"b  
(G"/C7q  
public static void sort(int[] data) { KiNluGNt  
sort(data, IMPROVED_QUICK); L=<,+m[!  
} u C`)?f*I  
private static String[] name={ W?12'EG}xa  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =OA7$z[  
}; OPKmYzf@b  
C9T- 4o1  
private static Sort[] impl=new Sort[]{ jRjQDK_"ka  
new InsertSort(), Rmh,P>  
new BubbleSort(), <,T#* fg  
new SelectionSort(), !{oP'8Ax$  
new ShellSort(), SY2((!n._  
new QuickSort(), R&}{_1dj8  
new ImprovedQuickSort(), Z:MU5(Te  
new MergeSort(), pC)S9Kl  
new ImprovedMergeSort(), $4TawFf"nc  
new HeapSort() ~x +24/qT  
}; f^XfIH_#  
eJ$ {`&J  
public static String toString(int algorithm){ B;L^!sLP  
return name[algorithm-1]; U C9w T  
} HR k^KB  
/#?i+z   
public static void sort(int[] data, int algorithm) { :w c.V  
impl[algorithm-1].sort(data); s0'Xihsw6  
} <QE/p0.  
\hZ9in`YlR  
public static interface Sort { <.6$zcW  
public void sort(int[] data); 9hs7B!3pc>  
} !1?Nc}T0Q&  
~E7=c3:"  
public static void swap(int[] data, int i, int j) { gLv";"4S  
int temp = data; PR1%  
data = data[j]; ~7=w,+  
data[j] = temp; Wv)2dD2I  
} We#O' m  
} KY;E.D`  
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