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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。 z.&% >%TPP  
插入排序: k<zGrq=8J  
Ks2%F&\cE  
package org.rut.util.algorithm.support; %C0O?q  
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import org.rut.util.algorithm.SortUtil; IA#*T`  
/** e uHu}  
* @author treeroot ,9wenr  
* @since 2006-2-2 R(N(@KC  
* @version 1.0 7u5\#|yL  
*/ u%T$XG  
public class InsertSort implements SortUtil.Sort{ %yM' Z[-  
cqL7dlhIl  
/* (non-Javadoc) {JCz^0DV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ja=70ZI^ 6  
*/ umZ g}|C_  
public void sort(int[] data) { _ZM9 "<M-X  
int temp; "4uUI_E9F;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kjC{Zr  
} -u9yR"n\}  
} Tv,.  
} 9$V_=Bo  
VfqY_NmgC  
} a {$k<@Ww  
}_(^/pnk  
冒泡排序: iz>y u[|  
.L5*E(<K0  
package org.rut.util.algorithm.support; y<%.wM]-J  
)]?egw5l  
import org.rut.util.algorithm.SortUtil; I5yd )72  
i~B@(,  
/** 8Gl5)=2  
* @author treeroot ^}/ E~Sg7\  
* @since 2006-2-2 W$Q)aA7  
* @version 1.0 a05:iFoJ  
*/ *R\/#Y|  
public class BubbleSort implements SortUtil.Sort{ -b\ V(@5  
3p 1EScH  
/* (non-Javadoc) 6+nMH +[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8<wuH#2<y  
*/ dF11Rj,~ 8  
public void sort(int[] data) { uj9tr`Zh  
int temp; &Dg)"Xji  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T ~~[a|bLa  
if(data[j] SortUtil.swap(data,j,j-1); 3^R][;  
} ) ~)SCN>-  
} $K.%un Gm  
} Ik-E4pxKo  
} Fr3d#kVR  
*- IlF]  
} |;U=YRi  
R(? <97  
选择排序: Ns|V7|n]  
Bw]L2=d  
package org.rut.util.algorithm.support; .W@4vrp@  
8LQ59K_WX  
import org.rut.util.algorithm.SortUtil; ?F87C[o  
T5dUJR2k$  
/** $dZ>bXUw:  
* @author treeroot &.  =}g]  
* @since 2006-2-2 ELrZ8&5G  
* @version 1.0 "gbnLKs  
*/ F;Q_*0mIQ  
public class SelectionSort implements SortUtil.Sort { MX`Wg  
`mKlv~$1^  
/* \5_P5q:`  
* (non-Javadoc) h%1~v$W`  
* FJd8s*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A |taP$ %  
*/ qaMZfA  
public void sort(int[] data) { 2c"N-c&A  
int temp; H#|Z8^ *Ds  
for (int i = 0; i < data.length; i++) { A eGG  
int lowIndex = i; KI Plb3oh  
for (int j = data.length - 1; j > i; j--) { TvWU[=4Yk  
if (data[j] < data[lowIndex]) { +\k9w.[:/  
lowIndex = j; UR/qVO?  
} 0/SC  
} L* k hj3;  
SortUtil.swap(data,i,lowIndex); i{|lsd(+  
} %uz|NRB=  
} dI_r:xN  
W7TXI~7  
} $h,&b<-  
xgtJl}L  
Shell排序: _z<Y#mik  
cVB|sYdf  
package org.rut.util.algorithm.support; k_K,J 6_)  
?@lx  
import org.rut.util.algorithm.SortUtil; M$&WM{Pr^  
|B%BwE  
/** zM_DE  
* @author treeroot y|e2j&m  
* @since 2006-2-2 rb *C-NutE  
* @version 1.0 dXhCyr%"6  
*/ Ox7uG{t$#  
public class ShellSort implements SortUtil.Sort{ - - i&"  
'0CXHjZN  
/* (non-Javadoc) pcRF: ~TE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W s^+7u  
*/ Evr2|4|O~  
public void sort(int[] data) { %\X P:  
for(int i=data.length/2;i>2;i/=2){ !cN?SGafZI  
for(int j=0;j insertSort(data,j,i); ;Na8 _}  
} k1f3?l vlU  
} S_T{L  
insertSort(data,0,1); $ DDSN  
} } g3HoFC  
/FP~jV!z  
/** d7W%zg\T  
* @param data (XbMrPKG  
* @param j FylWbQU9  
* @param i hF7V !*5  
*/ G}=`VYK  
private void insertSort(int[] data, int start, int inc) { CdBthOPX)  
int temp; i O%Zd[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G *mO&:q  
} qa 6=W  
} ^i{,z*vi  
} ilDJwZg#  
< -Hs<T|tW  
} :b<-[8d&  
< 72s7*Rv  
快速排序: DC$7B`#D  
JdaFY+f :  
package org.rut.util.algorithm.support; !sg%6H?}  
$xRo<,OV+  
import org.rut.util.algorithm.SortUtil; zQL!(2  
UfK4eZx*`  
/** 0M#N=%31  
* @author treeroot nmD1C_&  
* @since 2006-2-2 CDQJ bvx  
* @version 1.0 X+`ddX  
*/ f![xn2T  
public class QuickSort implements SortUtil.Sort{ y!7B,  
?-pxte8  
/* (non-Javadoc) P<>[e9|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %'{V%IXQ  
*/ -!XrwQyk  
public void sort(int[] data) { "2ZIoa!^  
quickSort(data,0,data.length-1); u{g]gA8s  
} ?JuX~{{. L  
private void quickSort(int[] data,int i,int j){ 8s QQK.N(  
int pivotIndex=(i+j)/2; **T:eI+  
file://swap /Qr A8  
SortUtil.swap(data,pivotIndex,j); 'fS?xDs-v  
J Z %`%rA  
int k=partition(data,i-1,j,data[j]); v\fzO#vj  
SortUtil.swap(data,k,j); gXq!a|eH  
if((k-i)>1) quickSort(data,i,k-1); /lf\ E=  
if((j-k)>1) quickSort(data,k+1,j); "%:7j!#X|I  
g/OI|1a  
} NlA*\vco  
/** e ZynF<i  
* @param data :6 Uk)   
* @param i ! (B_EM  
* @param j 536^PcJlN  
* @return S8*^ss>?^R  
*/ lP}od  
private int partition(int[] data, int l, int r,int pivot) { 8BHL  
do{ _TZW|Dh-2F  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,"@w>WL<9  
SortUtil.swap(data,l,r); *GCA6X  
} |tG05+M  
while(l SortUtil.swap(data,l,r); |2qR^Hd&5  
return l; @ L\-ZWq  
} ~@%(RMJm&  
 C}Rs[  
} `ajx hp  
h^['rmd  
改进后的快速排序: 9Tqn zD  
W=~id"XtJ  
package org.rut.util.algorithm.support; HMF8;,<_w?  
=8O}t+U  
import org.rut.util.algorithm.SortUtil; ov1Wr#s  
La\Q'0  
/** ~;}\zKQKE  
* @author treeroot UV?[d:\>'  
* @since 2006-2-2 kVWGDI$~  
* @version 1.0 $=\d1%_R|  
*/ gB>(xY>LrA  
public class ImprovedQuickSort implements SortUtil.Sort { )qbI{^_g  
~af8p {  
private static int MAX_STACK_SIZE=4096; vB Sm=M  
private static int THRESHOLD=10; d?JAUbqy  
/* (non-Javadoc) k& OC&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $RpF xi  
*/ \^yXc*C  
public void sort(int[] data) { D=2~37CzQ1  
int[] stack=new int[MAX_STACK_SIZE]; <H<!ht%q3  
\.5F](:  
int top=-1; .H ,pO#{;  
int pivot; ex.+'m<g  
int pivotIndex,l,r; &8Zeq3~  
T0g0jr{  
stack[++top]=0; j0AwL7  
stack[++top]=data.length-1; TKK,Y{{  
1d`cTaQ-  
while(top>0){ Ny[Q T*nV  
int j=stack[top--]; (viWY  
int i=stack[top--]; =ntft SH  
j(&GVy^;?  
pivotIndex=(i+j)/2; 5n:nZ_D  
pivot=data[pivotIndex]; !zU/Hq{wcK  
xf'LR[M  
SortUtil.swap(data,pivotIndex,j); miwf&b  
aXC!t  
file://partition B@d1xjp)']  
l=i-1; SK?I.  
r=j; *K`x;r  
do{ (m6EQoW^s+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^#2xQ5h  
SortUtil.swap(data,l,r); Umij!=GPG^  
} [@ILc*2O  
while(l SortUtil.swap(data,l,r); N5yJ'i~,M  
SortUtil.swap(data,l,j); =`JW1dM  
cbfD B^_  
if((l-i)>THRESHOLD){ ;;M"hI3@  
stack[++top]=i; 46ILs1T6  
stack[++top]=l-1; ;"D~W#0-v  
} V5~fMsse  
if((j-l)>THRESHOLD){ ^ s=*J=k  
stack[++top]=l+1; C B6A}m  
stack[++top]=j; vlvvi()  
} Cb4_ ?OR0  
]{<saAmJC  
} TopHE  
file://new InsertSort().sort(data); w"1 x=+  
insertSort(data); Vu=] O/ =P  
} aFyh,  
/** ,}KwP*:Z  
* @param data |hc\jb  
*/ ea 2 `q  
private void insertSort(int[] data) { [O(m/  
int temp; -'j7SOGk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eap8*ONl  
} 0JK2%%  
} +N7"EROc  
} w~]T<^fW~  
@' d6iYk_  
} "sD1T3!\)Q  
RJ@\W=aZ  
归并排序: o OQ'*7_  
ewpig4  
package org.rut.util.algorithm.support; vmLpm xS  
fa4=h;>a+  
import org.rut.util.algorithm.SortUtil; 5} G:D  
,%kmXh  
/** 0t+])>  
* @author treeroot zz&vfO31J  
* @since 2006-2-2 p3 e|j  
* @version 1.0 pcnl0o~  
*/ {tc57jsr  
public class MergeSort implements SortUtil.Sort{ 0Q`&inwh  
j|mv+O  
/* (non-Javadoc) Z&-tMai;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v$;@0t:;#  
*/ Je 31".  
public void sort(int[] data) { Od-Ax+Hp  
int[] temp=new int[data.length]; g>yry}>04%  
mergeSort(data,temp,0,data.length-1); +mLD/gK`  
} 7k'gt/#up  
#~S>K3(  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6Kp}_^|z  
int mid=(l+r)/2; >nK%^T  
if(l==r) return ; TtZ}"MPZ  
mergeSort(data,temp,l,mid); T{tn.sT  
mergeSort(data,temp,mid+1,r); 7*/J4MN  
for(int i=l;i<=r;i++){ 9n"V\e_R  
temp=data; Kr]z]4.d@  
} kutJd{68  
int i1=l; YQYX,b  
int i2=mid+1; "W5rx8a  
for(int cur=l;cur<=r;cur++){ lov%V*tL  
if(i1==mid+1) hl<y4y&|  
data[cur]=temp[i2++]; r%|A$=[Q  
else if(i2>r) xG1?F_]  
data[cur]=temp[i1++]; `c9'0*-  
else if(temp[i1] data[cur]=temp[i1++]; M$H`^Pv  
else AuXs B  
data[cur]=temp[i2++]; jM@?<1  
} V'I T1~  
} D"!jbVz]*  
U <rI!!#9  
} P$OUi!"  
xCq'[9oU  
改进后的归并排序: tDt :^Bc  
1x{kl01m%  
package org.rut.util.algorithm.support; _C$X04bU3V  
qe%V#c  
import org.rut.util.algorithm.SortUtil; CdL.?^  
ot }6D  
/** #1gO?N(<=  
* @author treeroot |z*>ixK  
* @since 2006-2-2 3ev -Iqz  
* @version 1.0 (hN?:q?'  
*/ #kci=2q_  
public class ImprovedMergeSort implements SortUtil.Sort { $w/E9EJ)3A  
Oyan9~  
private static final int THRESHOLD = 10; d@ (vg  
QD4:W"i  
/* Du!._  
* (non-Javadoc) yLqF ,pvO  
* b i~=x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +GeWg` \=  
*/ 2M&$Wuu.q  
public void sort(int[] data) { 95L yYg  
int[] temp=new int[data.length]; 9`Vc  
mergeSort(data,temp,0,data.length-1); jT-<IJh!o  
} V{ |[oIp  
\=fh-c(J,  
private void mergeSort(int[] data, int[] temp, int l, int r) { q:]Q% IC^  
int i, j, k; =$&&[&  
int mid = (l + r) / 2; qrE0H  
if (l == r) !i Jipe5  
return; :c:V%0Yji  
if ((mid - l) >= THRESHOLD) .&|L|q}  
mergeSort(data, temp, l, mid);  :,~K]G  
else <u0,Fp  
insertSort(data, l, mid - l + 1); n[CoS  
if ((r - mid) > THRESHOLD) M*`hDdS  
mergeSort(data, temp, mid + 1, r); 6 64q~_@B1  
else 7n&yv9"  
insertSort(data, mid + 1, r - mid); U&W"Ea=R/  
H=<LutnZ  
for (i = l; i <= mid; i++) { F#|Z# Mu  
temp = data; RRzP* A%=  
} fGarUV  
for (j = 1; j <= r - mid; j++) { T 1zi0fa'  
temp[r - j + 1] = data[j + mid]; ="(>>C1-  
} MGaiTN^_<  
int a = temp[l]; + zp0" ,2B  
int b = temp[r]; .iT4-  
for (i = l, j = r, k = l; k <= r; k++) { &S-er{]]  
if (a < b) { ;4kT?3$l  
data[k] = temp[i++]; g~)3WfC$[  
a = temp; &*gbK6JB  
} else { QBihpA 1;  
data[k] = temp[j--]; ^l(^z fsZ  
b = temp[j]; ^P$7A]!  
} HeozJ^u\?  
} $[z<oN_Q  
} ?cK]C2Ak  
$5A^'q  
/** ,g|2NjUAc  
* @param data i}lRIXjdV  
* @param l >];"N{ A  
* @param i [h-norB((  
*/ kEP<[K  
private void insertSort(int[] data, int start, int len) { niWx^gKb$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Pm?B 9S  
} T*+A.G@L"  
} C}Qt "-%  
} (STx$cya  
} vYnftJK&  
mi^hvks<  
堆排序: S^j,f'2  
jQ$BPEG&X  
package org.rut.util.algorithm.support; zP nC=h|g  
h(N=V|0  
import org.rut.util.algorithm.SortUtil; Uw <{i  
M-Sv1ZLh  
/** :Q- F9o J  
* @author treeroot XU9'Rfp  
* @since 2006-2-2 9o_- =>(  
* @version 1.0 yL&/m~{s  
*/ ; k}H(QI  
public class HeapSort implements SortUtil.Sort{ RL&lKHA  
OKPJuV`y6  
/* (non-Javadoc) _tWE8 r,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GV6mzD@ <  
*/ q-IWRb0j%a  
public void sort(int[] data) { v8'5pLt"  
MaxHeap h=new MaxHeap(); >S.91!x  
h.init(data); =x H~ww (D  
for(int i=0;i h.remove(); 6N3@!xtpi  
System.arraycopy(h.queue,1,data,0,data.length); %),!2_ x~  
} *s\sa+2al  
/80YZ   
private static class MaxHeap{ D^$OCj\  
P4 6,o  
void init(int[] data){ K\^&+7&zVg  
this.queue=new int[data.length+1]; rBfg*r`)  
for(int i=0;i queue[++size]=data; GAp!nix6h  
fixUp(size); LdEE+"Jw  
} VQ<5%+  
} VGZ6  
qd(hQsfqYU  
private int size=0; Ub)M*Cq0(o  
 yekRwo|  
private int[] queue; ]>8)|]O6n  
dtTlIhh1V  
public int get() { ~6d5zI4\  
return queue[1]; 3cThu43c  
} .Dx2 ;lj  
}cW#045es  
public void remove() { T2|:nC)@  
SortUtil.swap(queue,1,size--); ML= z<u+  
fixDown(1); ^:z7E1 ~  
} f3 &/r  
file://fixdown |!Ists  
private void fixDown(int k) { A.U'Q|  
int j; fU ={a2  
while ((j = k << 1) <= size) { IG|\:Xz  
if (j < size %26amp;%26amp; queue[j] j++; sTOFw;v%  
if (queue[k]>queue[j]) file://不用交换 hdj%|~Fj  
break; MaErx\  
SortUtil.swap(queue,j,k); TzrW   
k = j; &+- e  
} v#Upw\!  
} nh;y:Bi  
private void fixUp(int k) { #r}uin*jD  
while (k > 1) { =v 0~[ E4  
int j = k >> 1; xb`CdtG2.  
if (queue[j]>queue[k]) S@A<6   
break; or.\)(m#(  
SortUtil.swap(queue,j,k); 5"gL.Ez  
k = j; rzT{-DZB[4  
} all*P #[X  
} ]M\q0>HoJ  
iZC`z }  
} cL7C 2wB`  
c F=P!2 @  
} SQ<f  
KN, 4@4  
SortUtil: jY+Do:#/wO  
4J8Dh;a`  
package org.rut.util.algorithm; Cuv|6t75'  
4J}3,+  
import org.rut.util.algorithm.support.BubbleSort; L[. <o{  
import org.rut.util.algorithm.support.HeapSort; rr )/`Kmv%  
import org.rut.util.algorithm.support.ImprovedMergeSort; u){S$</  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~U%j{8uH  
import org.rut.util.algorithm.support.InsertSort; |j# ^@R  
import org.rut.util.algorithm.support.MergeSort; kf K[u/<i  
import org.rut.util.algorithm.support.QuickSort; (9'be\  
import org.rut.util.algorithm.support.SelectionSort; Yb9cW\lr  
import org.rut.util.algorithm.support.ShellSort; Z s73 ad  
8A4TAT4,  
/** 3#mE( `|P  
* @author treeroot [gn[nP9  
* @since 2006-2-2 vHc#m@4o  
* @version 1.0 3+zzi  
*/ Tk](eQsy.v  
public class SortUtil { PUKVn+h  
public final static int INSERT = 1; d?}hCo=/Xq  
public final static int BUBBLE = 2; #ovM(Mld  
public final static int SELECTION = 3; xVTo4-[p  
public final static int SHELL = 4; 2Fq=jOA)z$  
public final static int QUICK = 5; A^L?_\e6  
public final static int IMPROVED_QUICK = 6; uMpl#N p  
public final static int MERGE = 7; ay-9c2E  
public final static int IMPROVED_MERGE = 8; ' &N20w  
public final static int HEAP = 9; cNeiD@t3V&  
KBj@V6Q  
public static void sort(int[] data) { ~'{VaYk]v  
sort(data, IMPROVED_QUICK); SwJHgZ&  
} r\RFDj  
private static String[] name={ hXTYTbTX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q@Dkl F  
}; )Y8qWJU  
8})|^%@n  
private static Sort[] impl=new Sort[]{ OPLl*bnf  
new InsertSort(), 9 tAE#A  
new BubbleSort(), B!iFmkCy  
new SelectionSort(), FE}s#n_Pd  
new ShellSort(), kyu2)L2u  
new QuickSort(), oN ;-M-(  
new ImprovedQuickSort(), L6x B`E9  
new MergeSort(), f-&ATTx`J  
new ImprovedMergeSort(), "u5KbJW  
new HeapSort() SdSgn|S  
}; (gD Q\t@3-  
yZ|+VXO  
public static String toString(int algorithm){ $':JI#  
return name[algorithm-1]; 1wlVz#f.  
} }pK v.  
~f .y:Sbb  
public static void sort(int[] data, int algorithm) { 6N?#b66  
impl[algorithm-1].sort(data); W7$s5G,  
} ",QYDFFeF  
VZTmzIk.Y  
public static interface Sort { A`IHP{aB  
public void sort(int[] data); Ej{+U  
} Xout:dn  
e) ]RA?bF  
public static void swap(int[] data, int i, int j) { D/cg7  
int temp = data; dD o6fP2  
data = data[j]; ,!r@9T  
data[j] = temp; ^K"ZJ6?+1  
} :q(D(mK  
} Ca X^)  
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