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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。 N9~'P-V  
插入排序: Ktj(&/~}  
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package org.rut.util.algorithm.support; DR#3njjEC  
P2<gHJ9t  
import org.rut.util.algorithm.SortUtil; Cf8R2(-4  
/** lk5_s@V l  
* @author treeroot $\=6."R5<  
* @since 2006-2-2 w+:+r/!g  
* @version 1.0 #)Id J]  
*/ >B|ofwm*  
public class InsertSort implements SortUtil.Sort{ ulJ+:zwq$  
/ r`Y'rm  
/* (non-Javadoc) ZVCv(J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JC1BUheeb  
*/ Y+S~b  
public void sort(int[] data) { sZ\i(eIU  
int temp; ^^W`Lh%9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dW] Ej"W  
} "'LOaf$X  
} tFb|y+  
} 2l;ge>D J  
LS?` {E   
} >xk:pL*o`  
oQE_?">w  
冒泡排序: 3M5=@Fwkr  
^$^Vd@t>a  
package org.rut.util.algorithm.support; c{r6a=C  
p)AvG;  
import org.rut.util.algorithm.SortUtil; NWq [22X |  
K1qY10F:_  
/** c"jhbH!u4  
* @author treeroot V3. vE,  
* @since 2006-2-2 e3bAT.P  
* @version 1.0 [9##Kb  
*/ -bG#h)yj  
public class BubbleSort implements SortUtil.Sort{ $txWVjR?\  
*HfW(C$  
/* (non-Javadoc) }T&;*ww  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Mzc1dG:  
*/ }pU!1GsO  
public void sort(int[] data) { `^@g2c+d  
int temp; 6 I>xd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ G=0}IPfp  
if(data[j] SortUtil.swap(data,j,j-1); n Y.Umj  
} pNk,jeo  
} ce-m)o/  
} !3gpiQH{  
} |Cxip&e>  
+=lcN~U2  
} Y=#mx3.  
L>K39z~,  
选择排序: E,nYtn|B  
d%"@#bB  
package org.rut.util.algorithm.support; {yl/T:Bh&  
`~s,W.Eu4  
import org.rut.util.algorithm.SortUtil; =Am*$wGI  
D6 @4  
/** 7{6cLYl  
* @author treeroot `dq3=  
* @since 2006-2-2 blQzVp-  
* @version 1.0 m$G?e 9{  
*/ 2v; 7ohK  
public class SelectionSort implements SortUtil.Sort { HhT8YH  
](( >i%%~  
/* &bRxy`ZH  
* (non-Javadoc) % /wP2O<  
* 0zk T8'v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c&iK+qvh{  
*/ 4FP~+  
public void sort(int[] data) { |'>E};D  
int temp; _S7M5{U_  
for (int i = 0; i < data.length; i++) { 4N^Qd3[d  
int lowIndex = i; :j50]zLy{  
for (int j = data.length - 1; j > i; j--) { +xu/RY_  
if (data[j] < data[lowIndex]) { E* DVQ3~  
lowIndex = j;  z]R!l%`  
} Z6 |'k:R8  
} qS`|=5f  
SortUtil.swap(data,i,lowIndex); F(kRAe;  
} oew]ijnB  
} "vHAp55B{  
W Y qL  
} 3[g++B."pC  
3Tte8]0  
Shell排序: #p:jKAc3  
f;; S  
package org.rut.util.algorithm.support; "oGM> @q=B  
r:\5/0(  
import org.rut.util.algorithm.SortUtil; ff+9(P>*  
=2V;B  
/** m"> =QP  
* @author treeroot 7XI4=O};&%  
* @since 2006-2-2 5@r Zm4U  
* @version 1.0 fbbl92p  
*/ EG:WE^4  
public class ShellSort implements SortUtil.Sort{ | 3/p8  
Bv|9{:1%X}  
/* (non-Javadoc) !-}*jm p<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N[D\@o  
*/ :{='TMJ7  
public void sort(int[] data) { Q)i`.mHfFI  
for(int i=data.length/2;i>2;i/=2){ eX),B  
for(int j=0;j insertSort(data,j,i); b.u8w2(  
} 2ZIY{lBe  
} {~{s=c0  
insertSort(data,0,1); af5`ktx  
} _=M'KCL*)  
;. [$  
/** *Zo o  
* @param data 8$xKg3-3M  
* @param j >^)5N<t?  
* @param i 8QgL7  
*/ .2-JV0  
private void insertSort(int[] data, int start, int inc) { 9Q5P7}%p  
int temp; Nk~dfY<s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wN0OAbtX'  
} zNTu j p  
} .L|ax).D  
} (+v*u]w4  
v\tbf  
} =id $  
3B|-xq;]I  
快速排序: cNB$g )`  
$Lbe5d?\  
package org.rut.util.algorithm.support; Br$PL&e~  
u! FSXX<  
import org.rut.util.algorithm.SortUtil; $%"}N_M  
"jJ)hk5e  
/** 40sLZa)e  
* @author treeroot P+|8MT0  
* @since 2006-2-2 J7] 60H#P  
* @version 1.0 #.t{g8W\C  
*/ "$V2$  
public class QuickSort implements SortUtil.Sort{ -ZON']|<}k  
a~TZ9yg+HL  
/* (non-Javadoc) DyTk<L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1^>g>bn_"  
*/ E"yf!*  
public void sort(int[] data) { r/<JY5  
quickSort(data,0,data.length-1); "4AQpD  
} ^<Tp-,J$EN  
private void quickSort(int[] data,int i,int j){ G&H"8REm  
int pivotIndex=(i+j)/2; QYb?;Z  
file://swap e%Xf*64  
SortUtil.swap(data,pivotIndex,j); 3^UsyZS)  
P&^7wud-sb  
int k=partition(data,i-1,j,data[j]); e[dRHl  
SortUtil.swap(data,k,j); aM}"DY-_ h  
if((k-i)>1) quickSort(data,i,k-1); vj$ 6  
if((j-k)>1) quickSort(data,k+1,j); twS3J)UH  
6N)1/=)  
} :P1c>:j[  
/** 9 (.9l\h  
* @param data i */U.'#  
* @param i 'U0I.x(  
* @param j 3 pH` ]m2  
* @return {xoo9jq-  
*/ Xkm2C)  
private int partition(int[] data, int l, int r,int pivot) { -d)n0)9  
do{ !QspmCo+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A+DYIS  
SortUtil.swap(data,l,r); X&8,.=kt"  
} `R?W @,@'  
while(l SortUtil.swap(data,l,r); sB/s17ar  
return l; p>O< "X@  
} X1dG'PQ  
GP'Y!cl  
} kweTK]mT  
6x{IY  
改进后的快速排序: :J-5Q]#  
l!` 0I] }  
package org.rut.util.algorithm.support; * XGBym  
@&B!P3{f  
import org.rut.util.algorithm.SortUtil; ~l6Y<-!  
~{Bi{aK2  
/** [![ (h %  
* @author treeroot AwrK82  
* @since 2006-2-2 wO%:WL$5  
* @version 1.0 >MrU^t  
*/ v |2j~  
public class ImprovedQuickSort implements SortUtil.Sort { R!qrb26k  
O3: dOL/C  
private static int MAX_STACK_SIZE=4096; DdO '  
private static int THRESHOLD=10; mhuaXbr  
/* (non-Javadoc) ,?/<fxIY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %/on\*Vh3  
*/ gXJ^o;R>M  
public void sort(int[] data) { *b_54X%3  
int[] stack=new int[MAX_STACK_SIZE]; ~`H<sJ?9  
PlUjjJU  
int top=-1; mkA|gM[g7  
int pivot; V,5}hQJ F  
int pivotIndex,l,r; x&vD,|V!  
W2N7  
stack[++top]=0; #B9[U} 8  
stack[++top]=data.length-1; :/qO*&i,N  
kc[["w&  
while(top>0){ &Qjl|2  
int j=stack[top--]; N Z`hy>LF^  
int i=stack[top--]; i`'^ zR(`i  
FM[To  
pivotIndex=(i+j)/2; RY< b]|  
pivot=data[pivotIndex]; Uk6!Sb  
^W'[l al.  
SortUtil.swap(data,pivotIndex,j); o |iLBh$)  
hspg-|R  
file://partition Am  $L  
l=i-1; eMzCAO  
r=j; -5.%{Go$[  
do{ v2sU$M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a6P.Zf7  
SortUtil.swap(data,l,r); 7`!( 8  
} qKC*j DW  
while(l SortUtil.swap(data,l,r); NkI:  
SortUtil.swap(data,l,j); ,[ L$  
1}*;  
if((l-i)>THRESHOLD){ %m3efaC  
stack[++top]=i; p> S/6 [X  
stack[++top]=l-1; "|SE#k  
} Z+(V \  
if((j-l)>THRESHOLD){ xltu g##  
stack[++top]=l+1; x~eEaD5m%J  
stack[++top]=j; $uhDBmb  
} koZp~W-  
p04+"  
} aM!#  
file://new InsertSort().sort(data); G - WJlu  
insertSort(data); I_7EfAqg(  
} +~O{ UGB=  
/** LP /4e`  
* @param data NhX.yLb$   
*/ k^jCB>b  
private void insertSort(int[] data) { s#ZH.z@J  
int temp; P.DWC'IBN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?F{xDfqw  
} 'O9=*L) X  
} {m:R v&T  
} W^Y0>W~  
; bE6Y]"Rz  
} 3~rc=e  
cU|jT8Q4H  
归并排序: Hc|U@G  
*pp1Wa7O  
package org.rut.util.algorithm.support; )n@3@NV  
q(^J7M)  
import org.rut.util.algorithm.SortUtil; Ms)zEy>[Ql  
TVwYFX  
/** vy2aNUmt  
* @author treeroot ZQA C &:  
* @since 2006-2-2 5&= n  
* @version 1.0 )W|jt/  
*/ p>3'77 V  
public class MergeSort implements SortUtil.Sort{ n4y6Ua9m{  
%;$Y|RbmqE  
/* (non-Javadoc) ><c5Humr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HH@xn d  
*/ K9'*q3z  
public void sort(int[] data) { 8-YrmP2k  
int[] temp=new int[data.length]; x`i`]6q  
mergeSort(data,temp,0,data.length-1); bNpIC/#0K  
} 39aCwhh7v  
C2=iZ`Z>T  
private void mergeSort(int[] data,int[] temp,int l,int r){ rspoSPnY1  
int mid=(l+r)/2; zo7XmUI3P  
if(l==r) return ; %i -X@.P  
mergeSort(data,temp,l,mid); ^lc}FN  
mergeSort(data,temp,mid+1,r); :`u&TXsu  
for(int i=l;i<=r;i++){ K[>@'P}y  
temp=data; <kXV1@>  
} &Pg-|Ql  
int i1=l; K&IrTA j}  
int i2=mid+1; jw(> @SXz  
for(int cur=l;cur<=r;cur++){ 26#Jhb E+  
if(i1==mid+1) /.kna4k  
data[cur]=temp[i2++]; QJIItx4hE  
else if(i2>r) y(3c{y@~X  
data[cur]=temp[i1++]; Ma=6kX]  
else if(temp[i1] data[cur]=temp[i1++]; }vUlTH  
else M?~<w)L}  
data[cur]=temp[i2++]; `KJYm|@i  
} {[t"O u  
} n]C%(v!u3  
=Q8H]F  
} 8Z4?X%  
P-OPv%jyi  
改进后的归并排序: S|q!? /jqj  
U|Z>SE<k  
package org.rut.util.algorithm.support; ')u5l  
k#Ez  
import org.rut.util.algorithm.SortUtil; 4$zFR}f  
V)1:LLRW  
/** zdjM%l);  
* @author treeroot {~p7*j^0  
* @since 2006-2-2 "?eH=!  
* @version 1.0 :m++ iR  
*/ TcKvSdr'  
public class ImprovedMergeSort implements SortUtil.Sort { `zzKD2y  
FSU%?PxO  
private static final int THRESHOLD = 10; "h;;.Y8e  
( ztim  
/* =2nn "YVP  
* (non-Javadoc) wsJ%* eYf  
* #mRFUA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,bVS.A'o  
*/ [UJEU~XC  
public void sort(int[] data) { TXJY2J*24  
int[] temp=new int[data.length]; c.8((h/  
mergeSort(data,temp,0,data.length-1); iIGI=EwZ  
} A`x -L  
@ k+%y'Y?  
private void mergeSort(int[] data, int[] temp, int l, int r) { q M_/  
int i, j, k; ne"?90~  
int mid = (l + r) / 2; x!C8?K =|  
if (l == r) W%>i$:Qq  
return; ,5\2C{  
if ((mid - l) >= THRESHOLD) KZrMf77=  
mergeSort(data, temp, l, mid); +=6RmId+X  
else CP]S-o}yd  
insertSort(data, l, mid - l + 1); =CjNtD2]  
if ((r - mid) > THRESHOLD) ljYpMv.>xG  
mergeSort(data, temp, mid + 1, r); aVppOxA  
else -3G 4vRIo  
insertSort(data, mid + 1, r - mid); 97(Xu=tX  
S$jV|xK B  
for (i = l; i <= mid; i++) { <}EV*`w4  
temp = data; B?;' lDz*  
} -Wlp=#9  
for (j = 1; j <= r - mid; j++) { ]>)u+|  
temp[r - j + 1] = data[j + mid]; C(V[wvL  
} ~[| V3h4v  
int a = temp[l]; L$29L:  
int b = temp[r]; $(@o$%d  
for (i = l, j = r, k = l; k <= r; k++) { "?.'{,Q  
if (a < b) { Q%& _On  
data[k] = temp[i++]; WxVn&c\  
a = temp; ':4}O#  
} else { +}7Ea:K   
data[k] = temp[j--]; &c!j`86y*  
b = temp[j]; j\`EUC  
} [lNqT1%]  
} PTbA1.B  
} Pt6hGSo.  
EjR_-8@FK  
/** CxbSj,  
* @param data *GbVMW[A>  
* @param l RgB6:f,  
* @param i 'yPCZ`5H(  
*/ .3lGX`d{  
private void insertSort(int[] data, int start, int len) { Mw"xm9(Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V#'26@@  
} $J QWfGwR  
} U1,~bO9  
} 0?lp/|K  
} ~L%Pz0Gg  
oA4D\rn8"  
堆排序: `Yx-~y5X  
A1T<  
package org.rut.util.algorithm.support; ,vPe}OKj  
m:)Z6  
import org.rut.util.algorithm.SortUtil; 4S,.R  
nu&_gF,{  
/** b8J @K"  
* @author treeroot  Y{B9`Z  
* @since 2006-2-2 RAIVdQ}.Z  
* @version 1.0 0a"igH}  
*/ D JLiZS  
public class HeapSort implements SortUtil.Sort{ vkd[: CC  
B4]AFRI  
/* (non-Javadoc) , CJAzGBS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )W&o?VRfO  
*/ GWF/[%  
public void sort(int[] data) { qbS'|--wH  
MaxHeap h=new MaxHeap(); &/Eg2  
h.init(data); TZ?Os4+  
for(int i=0;i h.remove(); uYFMv=>j  
System.arraycopy(h.queue,1,data,0,data.length); Y,k(#=wg  
} wYZT D*A2h  
u~s Sk  
private static class MaxHeap{ iO!27y  
tIq>Oojdx  
void init(int[] data){ *)limqe3"$  
this.queue=new int[data.length+1]; ?h/xAl  
for(int i=0;i queue[++size]=data; e8$l0gzaD  
fixUp(size); 3`8dii  
} yGU .AM  
} MaZM%W8Z  
exfm q  
private int size=0; 86 *;z-G  
`AWy!}8  
private int[] queue; y Wpi|  
Lj}>Xy(7<  
public int get() { ;W]D ~X&  
return queue[1]; &!ED# gs  
} ?2{bKIV_  
_|N}4a  
public void remove() { 3pvYi<<D'  
SortUtil.swap(queue,1,size--); !X^Hi=aV  
fixDown(1); :6XguU  
} /\na;GI$  
file://fixdown 6gXIt9B.h$  
private void fixDown(int k) { l0I}&,+  
int j; vt//)*(.$  
while ((j = k << 1) <= size) { ujU=JlJ7dl  
if (j < size %26amp;%26amp; queue[j] j++; g %f*ofb  
if (queue[k]>queue[j]) file://不用交换 &J_Z~^   
break; vu=me?m?(  
SortUtil.swap(queue,j,k); 7 _`L$<-n  
k = j; J , V  
} pgT9hle/  
} [`d$X^<y;  
private void fixUp(int k) { p8Iw!HE  
while (k > 1) { 7_-w_"X  
int j = k >> 1;  3P1&;  
if (queue[j]>queue[k]) ~ |6dH  
break; :M06 ;:e  
SortUtil.swap(queue,j,k); (ab{F5  
k = j; !BDUv(  
} 2K;#Evn'j  
} Z1M>-[j)  
Frk cO  
} F!J J6d53y  
BPqk "HG]T  
} cB#nsu>  
'Y.Vn P&H  
SortUtil: []|;qHhC~(  
D3`}4 A  
package org.rut.util.algorithm; Br}h/!NU/  
\i!Son.<  
import org.rut.util.algorithm.support.BubbleSort; ,|+Gls  
import org.rut.util.algorithm.support.HeapSort; vv6?V#{  
import org.rut.util.algorithm.support.ImprovedMergeSort; j Fma|y  
import org.rut.util.algorithm.support.ImprovedQuickSort; EM@ ;3.IO  
import org.rut.util.algorithm.support.InsertSort; ibJHU@l  
import org.rut.util.algorithm.support.MergeSort; -T7xK/  
import org.rut.util.algorithm.support.QuickSort; v!H:^!z  
import org.rut.util.algorithm.support.SelectionSort; 7 {f_fkbs  
import org.rut.util.algorithm.support.ShellSort; [*)Z!)  
ZU^I H9  
/** I^D0<lHl~  
* @author treeroot w1r$='*I  
* @since 2006-2-2 'CXRG$D  
* @version 1.0 %K(0W8&  
*/ LvJGvj  
public class SortUtil { K^zDNIQU  
public final static int INSERT = 1; 6"U8V ?E  
public final static int BUBBLE = 2; -I":Z2.fR  
public final static int SELECTION = 3; C9qJP^F  
public final static int SHELL = 4; 3NIUW!gr  
public final static int QUICK = 5; +R6a}d/K  
public final static int IMPROVED_QUICK = 6; n-o3  
public final static int MERGE = 7; DdSSd@,x*  
public final static int IMPROVED_MERGE = 8; |9Yi7.  
public final static int HEAP = 9; `Gd$:qV  
!g>.i`  
public static void sort(int[] data) { ]u#JuX  
sort(data, IMPROVED_QUICK); &.Q8Mi aT  
} ymWgf 6r<  
private static String[] name={ ;;Ds  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {fV}gR2  
}; :m'+tGs  
vMla'5|l  
private static Sort[] impl=new Sort[]{ NOt@M  
new InsertSort(), iWE)<h  
new BubbleSort(), -Xz&}QA  
new SelectionSort(), 5l DFp9  
new ShellSort(), ]XeO0Y  
new QuickSort(), C5W>W4EM  
new ImprovedQuickSort(), b.F^vv"]]  
new MergeSort(), :?Y$bX}a  
new ImprovedMergeSort(), 5\Fz!  
new HeapSort() {_#yz\j  
}; hXn3,3f3oZ  
YE}s  
public static String toString(int algorithm){ 4=Gph  
return name[algorithm-1]; uS+k^ #  
} J:j<"uPm  
F7MzCZvu  
public static void sort(int[] data, int algorithm) { ]XA4;7  
impl[algorithm-1].sort(data); ,FZT~?  
} 06*rWu9P3  
`zpbnxOL$T  
public static interface Sort { ^YvB9XN  
public void sort(int[] data); g~S)aU\:,  
} % ."@Q$lA  
N^w'Hw0  
public static void swap(int[] data, int i, int j) { 1tMQqI`N  
int temp = data; !k&Q 5s:  
data = data[j]; @}s$]i$|-  
data[j] = temp; 6rN(_Oi-  
} B[5r|d'  
} xJZ@DR,#  
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