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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。 nf!RB-orF  
插入排序: WSfla~-'F  
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package org.rut.util.algorithm.support; .)^@[yrkz  
0A[p3xE\  
import org.rut.util.algorithm.SortUtil; 5J1A|qII  
/** b7>^w<ki  
* @author treeroot E)|_7x<u  
* @since 2006-2-2 <^VZ4$j  
* @version 1.0 SymSAq0$F  
*/ j(G}4dib  
public class InsertSort implements SortUtil.Sort{ 0 3L"W^gc  
Ak%M,``(L  
/* (non-Javadoc) !]Z> T5$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :bMCmY  
*/ "iE9X.6NMu  
public void sort(int[] data) { -bSe=09;S|  
int temp; tYyva  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2X2,( D!  
} MP,l*wVd  
} rAD5n, M]  
} QLo^6S5!  
yv4ki5u`  
} +]Of f^s  
+=%13cA*U  
冒泡排序: [w l:"rm  
.['@:}$1  
package org.rut.util.algorithm.support; Ltpd:c  
C,C%1  
import org.rut.util.algorithm.SortUtil; "Iu[)O%  
$DC*&hqpt  
/** BM{GSX  
* @author treeroot "/hM&  
* @since 2006-2-2 x Yr-,$/  
* @version 1.0 E!'H,#"P  
*/ J) v~  
public class BubbleSort implements SortUtil.Sort{ _#9:cH*  
0~RsdQGqC  
/* (non-Javadoc) U7J0&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KC o<%  
*/ DHGv< F@  
public void sort(int[] data) { { 'Hi_b3  
int temp; Fa^5.p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vOsd>3"  
if(data[j] SortUtil.swap(data,j,j-1); cs`/^2Vf"#  
} Y."ujo#bB  
} i7 `dY {p7  
} R3F>"(P@tS  
} j~V@0z.  
w.J[3m/  
} e;pVoRI  
hu\HK81m  
选择排序: R|H9AM ~E  
<5/r  
package org.rut.util.algorithm.support; h{.KPK\  
OlhfBu)~  
import org.rut.util.algorithm.SortUtil; PRl\W:_t  
ed*Cx~rT  
/** joDnjz=  
* @author treeroot !*u5HVn  
* @since 2006-2-2 @lAOi1m,,  
* @version 1.0 b].:2  
*/ ]CH@ T9d5V  
public class SelectionSort implements SortUtil.Sort { v vlfL*f  
4NbX! "0  
/* S5d:?^PGg  
* (non-Javadoc) XETY)<g  
* )H$Ik)/N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sj2v*tFb  
*/ <Hhl=6op  
public void sort(int[] data) { @``kt*+K+  
int temp; +Uq9C-Iu  
for (int i = 0; i < data.length; i++) { \(.&E`r  
int lowIndex = i; :w(J=0Lt  
for (int j = data.length - 1; j > i; j--) { nul?5{z@  
if (data[j] < data[lowIndex]) { >yUThhJRn  
lowIndex = j; dra'1E  
} ];6c/#2x  
} \v]}  
SortUtil.swap(data,i,lowIndex); wRb%-s  
} y&9S+  
} _)2.#L  
l9 )iLOj  
} j>eL&.d  
MLY19;e  
Shell排序: >1a- }>r  
Vj4 if@Z  
package org.rut.util.algorithm.support; _`/0/69  
wQ!~c2a<8  
import org.rut.util.algorithm.SortUtil; #`:s:bwM:  
2ko7t9y&  
/** ?+GbPG~  
* @author treeroot +-'qI_xo  
* @since 2006-2-2 [V{JuG;s  
* @version 1.0 KoiU\r  
*/ Ql%7wrK  
public class ShellSort implements SortUtil.Sort{ F^_d8=67h  
/V~L:0%  
/* (non-Javadoc) mLk@&WxG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H#k"[eZ  
*/ Ol9U^  
public void sort(int[] data) { f1=BBQY >  
for(int i=data.length/2;i>2;i/=2){ x `PIJE  
for(int j=0;j insertSort(data,j,i); 51.F,uY  
} a\vf{2  
} V|}9d:&O  
insertSort(data,0,1); +^gh3Y  
} t2p/NIn  
p]`pUw{  
/** J=*y>Zt-b  
* @param data 3{Ze>yFE  
* @param j OnH>g"  
* @param i Y::fcMJr;Q  
*/ o}v # Df  
private void insertSort(int[] data, int start, int inc) { ) EEr?"  
int temp; 7t5X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7oF`Os+U  
} yZK1bnYG|I  
} k(=\& T  
} <X p F  
#1hT#YN  
} Yp 6;Y7^  
qt/syF&s  
快速排序: pPo?5s  
rZu_"bcJ  
package org.rut.util.algorithm.support; x~s>  
`m3@mJ!>\  
import org.rut.util.algorithm.SortUtil; 90sMS]a  
V==' 7n  
/** Ms1G&NYP  
* @author treeroot VT3Zo%Xx  
* @since 2006-2-2 |rdG+ >  
* @version 1.0 &-<"HW  
*/ wuzz Wq  
public class QuickSort implements SortUtil.Sort{ $@x3<}X;  
aZ@4Z=LK  
/* (non-Javadoc) 2@08 V|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `"AjbCL  
*/ f*XF"@ZQV  
public void sort(int[] data) { z$7YC49^  
quickSort(data,0,data.length-1); edGV[=]F  
} TzPx4L6?  
private void quickSort(int[] data,int i,int j){ :FG}k Y  
int pivotIndex=(i+j)/2; Q)#<T]~=  
file://swap oCy52Bm.!  
SortUtil.swap(data,pivotIndex,j); HZ 8 j[kO  
:N8D1e-a  
int k=partition(data,i-1,j,data[j]); <kLY1 EILM  
SortUtil.swap(data,k,j); 8S]Mf*~S'  
if((k-i)>1) quickSort(data,i,k-1); 6;n^/3*#  
if((j-k)>1) quickSort(data,k+1,j); L!S-f4^5  
#Yw^n?~~  
} d/Py,  
/** :U)e 8  
* @param data b cM#KA  
* @param i 32~Tf,  
* @param j e"r}I!.  
* @return eoEb\zJ  
*/ ujz %0Mq;  
private int partition(int[] data, int l, int r,int pivot) { x ?^c:`.  
do{ $nn~K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m*i~Vjxj-m  
SortUtil.swap(data,l,r); R%#c~NOO  
} r0\bi6;s/  
while(l SortUtil.swap(data,l,r); yqejd_cd  
return l; `yQHPN0/  
} wW%I < M  
!-N!8 0  
} iS=T/<|?  
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改进后的快速排序: P? 9CBhN  
EHzZ9zH\  
package org.rut.util.algorithm.support; "VT5WFj  
P*aD2("Z  
import org.rut.util.algorithm.SortUtil; 7]nPWz1%*  
{q}: w{x9u  
/** >E]*5jqU  
* @author treeroot ]m4LY.SQ  
* @since 2006-2-2 *r-Bt1  
* @version 1.0 uXhp+q\  
*/ +B8Ut{l  
public class ImprovedQuickSort implements SortUtil.Sort { e\yj>tQJg  
UD9h5PgT  
private static int MAX_STACK_SIZE=4096; s|,]Nb=z/  
private static int THRESHOLD=10; ZM|>Va/X  
/* (non-Javadoc) ]ei] ) JI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G x,D'H'  
*/ c U{LyZp  
public void sort(int[] data) { +Og O<P  
int[] stack=new int[MAX_STACK_SIZE]; 8U;!1!+ 7)  
{;p /V\   
int top=-1; z 9D2,N.  
int pivot; (XW#,=rYk  
int pivotIndex,l,r; spl*[ d  
qb"!  
stack[++top]=0; `Mjm/9+18  
stack[++top]=data.length-1; Rp@u.C <  
htF&VeIte  
while(top>0){ y:,{U*49  
int j=stack[top--];  R(zsn;  
int i=stack[top--]; &1Y+ q]  
_p_F v>>:  
pivotIndex=(i+j)/2; 3/[=  
pivot=data[pivotIndex]; #e|eWi>  
iEU(1?m2-  
SortUtil.swap(data,pivotIndex,j); ze 4/XR  
?BLOc;I&a  
file://partition ]-}a{z  
l=i-1; {^\-%3$  
r=j; Xs!eV  
do{ +$UfP(XmH  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'P~*cr ?A  
SortUtil.swap(data,l,r); {'b8;x8h  
} O Z#?  
while(l SortUtil.swap(data,l,r); |hdh4P$+|  
SortUtil.swap(data,l,j); :w];N|48s  
QqwX Fk  
if((l-i)>THRESHOLD){ !3b%Q</M H  
stack[++top]=i; fk"{G>&8  
stack[++top]=l-1; Ja (/ym^  
} +]>a`~   
if((j-l)>THRESHOLD){ bkM$ Qo  
stack[++top]=l+1; \;?\@vo<  
stack[++top]=j; t{ 7l.>kf  
} JNu- z:J  
S1B/ClKWq  
} =.o-R=:d  
file://new InsertSort().sort(data); HAiUFO/R  
insertSort(data); w1}[lq@  
} )F~_KD)7jJ  
/** a>kD G <.A  
* @param data i]YQq!B  
*/ n-=\n6"P  
private void insertSort(int[] data) { zJsoenU  
int temp; /F4:1 }  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2Z97Tq  
} ,S5#Kka~a  
} x:bYd\ EJ[  
} <VBw1|)$@  
:1{j&$  
} {c1qC zM4  
|`okIqp  
归并排序: 4ku/3/ 6  
{Q-U=me\  
package org.rut.util.algorithm.support; %*gO<U4L]  
PWmz7*/  
import org.rut.util.algorithm.SortUtil; 68!]q(!6F  
7*5ctc!dG  
/** I,S'zHR  
* @author treeroot g}D$`Nx:  
* @since 2006-2-2 x3P@AC$\  
* @version 1.0 _kd |:,  
*/ |-mazvA  
public class MergeSort implements SortUtil.Sort{ `u}x:f !  
\1Bgs^  
/* (non-Javadoc) Y/^<t'o&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n>4S P_[E7  
*/ gP<_DEd^`  
public void sort(int[] data) { ,YY#ed&l  
int[] temp=new int[data.length]; '-vy Q^  
mergeSort(data,temp,0,data.length-1); 4 * OU  
} Gw./qu-W  
HDEG/k/~m  
private void mergeSort(int[] data,int[] temp,int l,int r){ +doT^&2u*  
int mid=(l+r)/2; br;G5^j3?  
if(l==r) return ; ]M2<I#hF.  
mergeSort(data,temp,l,mid); ./ :86@O  
mergeSort(data,temp,mid+1,r); ]/bE${W*]  
for(int i=l;i<=r;i++){ i#lo? \PO>  
temp=data; HZm i ?  
} X2`>@GR/>  
int i1=l; g@2.A;N0  
int i2=mid+1; 2tv40(M:<  
for(int cur=l;cur<=r;cur++){ `#f=&S?k  
if(i1==mid+1) [1*/lt|+p  
data[cur]=temp[i2++]; -1:Z^&e/  
else if(i2>r) mQs$7t[>t  
data[cur]=temp[i1++]; [z~Nw#  
else if(temp[i1] data[cur]=temp[i1++]; K[[k,W]qb  
else Oe YLL4H  
data[cur]=temp[i2++]; @NIypi$T  
} T]W -g  
} uI2'jEjO  
f*],j  
} (HI%C@e9  
gp HwiFc  
改进后的归并排序: 9qDGxW '1  
Dkb&/k:)  
package org.rut.util.algorithm.support; 2FzS_\":I  
Q.1ohj0)  
import org.rut.util.algorithm.SortUtil; zl\#n:|  
d]3sC  
/** H1nQ.P]_  
* @author treeroot 0vp I#q  
* @since 2006-2-2 &w0=/G/T=~  
* @version 1.0 ak>NKK8P  
*/ kKM%    
public class ImprovedMergeSort implements SortUtil.Sort { b..$5  
Z-|C{1}A  
private static final int THRESHOLD = 10; pG @iR*?  
qfu2}qUX~%  
/* 6W=:`14  
* (non-Javadoc) "^z=r]<5  
* A232"p_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E5 oD|'=WA  
*/ Y2-bU 7mo  
public void sort(int[] data) { >n~p1:$  
int[] temp=new int[data.length]; HIm, "iYk  
mergeSort(data,temp,0,data.length-1); S=p u  
} 7Ca\ (82  
rbPs~C-[  
private void mergeSort(int[] data, int[] temp, int l, int r) { H4NEB1 TO>  
int i, j, k; }yw;L(3  
int mid = (l + r) / 2; 9/Dt:R3QU  
if (l == r) #&83;uys  
return; .,Qnn}:l  
if ((mid - l) >= THRESHOLD) F5+_p@ !i  
mergeSort(data, temp, l, mid); gi'agB^  
else A#S:_d  
insertSort(data, l, mid - l + 1); <UJJ],)^1A  
if ((r - mid) > THRESHOLD) 7[BL 1HI*  
mergeSort(data, temp, mid + 1, r); |nN/x<v  
else io7U[#  
insertSort(data, mid + 1, r - mid); C-u/{CP  
kA!(}wRL  
for (i = l; i <= mid; i++) { K<6x4ha  
temp = data; ':D&c  
} 1:zu$|%7  
for (j = 1; j <= r - mid; j++) { g@i>R>  
temp[r - j + 1] = data[j + mid]; 4D$sFR|?t  
} Pki4wDCTW  
int a = temp[l]; "GI&S%F  
int b = temp[r]; Ok~{@\  
for (i = l, j = r, k = l; k <= r; k++) { `?^w  
if (a < b) { &hN&nH"PC  
data[k] = temp[i++]; Tki/ d\!+  
a = temp; ~88 Tz+  
} else { %8CT -mQ  
data[k] = temp[j--]; ,'CWt]OS'  
b = temp[j]; 7&V^BW  
} h#>L:Wf5E  
} VhFRh,J(T  
} =veOVv[Q&/  
N5s|a5  
/** /Jf`x>eiH  
* @param data i `QK'=h[  
* @param l C2rj]t  
* @param i /lB0>Us  
*/ F[D0x26 ^  
private void insertSort(int[] data, int start, int len) { XYHCggy  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M |?p3%  
} ?w37vsN  
} V/}>>4  
} qzt2j\v  
} I"32[?0 (;  
$Cd;0gdv  
堆排序: nP\V1pgA  
DJYXC,r  
package org.rut.util.algorithm.support; !Vr45l  
=j+oKGkoCa  
import org.rut.util.algorithm.SortUtil; Ge:-|*F  
6~h1iY_~  
/** M1 ]6lg[si  
* @author treeroot YD46Z~$  
* @since 2006-2-2 "Dl9<EZ  
* @version 1.0 ?ey&Un"  
*/ MAe<.DHY  
public class HeapSort implements SortUtil.Sort{ `x$}~rP&)!  
'CX.qxF1;p  
/* (non-Javadoc)  n22hVw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +yb$[E*  
*/ f'6qJk%J  
public void sort(int[] data) { Uk *;C  
MaxHeap h=new MaxHeap(); iCnUnR{  
h.init(data); T dP{{&'9  
for(int i=0;i h.remove(); 3H'nRK},  
System.arraycopy(h.queue,1,data,0,data.length); FK@ f'  
} AIl$qPKj&  
 pO/SV6N  
private static class MaxHeap{ vbA7I<;  
A2|o=mOH  
void init(int[] data){ ))IgB).3M  
this.queue=new int[data.length+1]; 7t-*L}~WA  
for(int i=0;i queue[++size]=data; `@$"L/AJ  
fixUp(size); B}q  
} X}j'L&{F@  
} AZy~Q9Kc  
-':"6\W  
private int size=0; noaN@K[GO  
Xh0wWU*  
private int[] queue; c[h'`KXJf-  
g/ l0}%  
public int get() { &=z1$ih>2\  
return queue[1]; o7Cnyy#:  
} lv00sa2z  
F8S~wW=\w  
public void remove() { ,dZ#,<  
SortUtil.swap(queue,1,size--); fmnRUN=  
fixDown(1); ,"N3k(g  
} W"-EC`nP  
file://fixdown (I7&8$Zl  
private void fixDown(int k) { DO1 JPeIi  
int j; xMSNrOc  
while ((j = k << 1) <= size) { yL ;o{ G  
if (j < size %26amp;%26amp; queue[j] j++; V5yxQb  
if (queue[k]>queue[j]) file://不用交换 7~kpRa@\P  
break; xxLgC;>[  
SortUtil.swap(queue,j,k); h/1nm U]  
k = j; v?YdLR  
} hi {2h04  
} kMl@v`  
private void fixUp(int k) { 'YZI>V*  
while (k > 1) { lPRdwg-  
int j = k >> 1; ^_*jp[!`b$  
if (queue[j]>queue[k]) FVsu8z u  
break; 5W[3_P+  
SortUtil.swap(queue,j,k); ?AV&@EX2C  
k = j; hl6,#2$  
} z-KrQx2  
} ^MW\t4pZ  
9UeVvH  
} "pSH!0Ap\  
HA^jk%53  
} U^M@um M  
E8T"{ R80  
SortUtil: !j!Z%]7  
e9~cBG|  
package org.rut.util.algorithm; ~K5Cr  
r{K\(UT]!  
import org.rut.util.algorithm.support.BubbleSort; Bs+c2R  
import org.rut.util.algorithm.support.HeapSort; v>#Cg \  
import org.rut.util.algorithm.support.ImprovedMergeSort; n!0${QVnS  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2Vz'n@g=  
import org.rut.util.algorithm.support.InsertSort; Sni&?tcY  
import org.rut.util.algorithm.support.MergeSort; :DZLjC  
import org.rut.util.algorithm.support.QuickSort; ,}9f(`  
import org.rut.util.algorithm.support.SelectionSort; js:C mnI  
import org.rut.util.algorithm.support.ShellSort; do:QH.q8)  
CS~=Z>6EjA  
/** *.kj]BoO  
* @author treeroot >DDQ'W!  
* @since 2006-2-2 !lR0w|  
* @version 1.0 E$]a?uA:  
*/ m >]>$=%  
public class SortUtil { eaV3) uP  
public final static int INSERT = 1; cT/3yf  
public final static int BUBBLE = 2; `fQM  
public final static int SELECTION = 3; `t{D7I7  
public final static int SHELL = 4; {E!$ xY8  
public final static int QUICK = 5; _:wZmZU}  
public final static int IMPROVED_QUICK = 6; p>k]C:h  
public final static int MERGE = 7; zc6H o  
public final static int IMPROVED_MERGE = 8; !"g=&Uy&  
public final static int HEAP = 9; VDB$"T9#  
a`7%A H)  
public static void sort(int[] data) { OOCQsoN  
sort(data, IMPROVED_QUICK); E^b pckP  
} {iA^rv|  
private static String[] name={ q<-%L1kc 1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d32@M~vD  
}; >$2E1HW.  
|'ZN!2u  
private static Sort[] impl=new Sort[]{ X3P&"}a  
new InsertSort(), IYuyj(/!  
new BubbleSort(), &g*klt'B  
new SelectionSort(), j.k@6[ R>?  
new ShellSort(), jmkRP"ZnA  
new QuickSort(), 0(wf{5  
new ImprovedQuickSort(), uVN.=  
new MergeSort(), >HE,'  
new ImprovedMergeSort(), 4Z*|Dsw  
new HeapSort() riID,aut  
}; hZ!oRWIU%G  
e&d3SQ%  
public static String toString(int algorithm){ y&7YJx  
return name[algorithm-1]; .j:i&j(  
} joe9.{  
2*+ 3Rr J  
public static void sort(int[] data, int algorithm) { JYPxd~T/-  
impl[algorithm-1].sort(data); 2bWUa~%B  
} -r!42`S  
7nm}fT z7  
public static interface Sort { &kb\,mQ  
public void sort(int[] data); Q`N18I3  
} v#zPH5xo  
d{W}p~UbH  
public static void swap(int[] data, int i, int j) { TW>?h=.z  
int temp = data; .\$Wy$ d  
data = data[j]; d&hD[v  
data[j] = temp; L*P_vCC  
} }qG#N  
} ,aI,2U91  
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