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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。 <ipWMZae0F  
插入排序: d&?F#$>7|  
qNy-o\;XN  
package org.rut.util.algorithm.support; 8,H~4Ce3  
w7r'SCVh3+  
import org.rut.util.algorithm.SortUtil; 1Lc8fP$  
/** *iYMX[$  
* @author treeroot ,, 7.=#  
* @since 2006-2-2 l*qk1H"g  
* @version 1.0 w~p4S+k&  
*/ sc9]sIb  
public class InsertSort implements SortUtil.Sort{ OFp#<o,p  
$8=(I2&TW  
/* (non-Javadoc) my]P_mE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hj+p`e S  
*/ :Fc8S9  
public void sort(int[] data) { -&$%|cyThQ  
int temp; >6w@{p2B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y1|^>C#a  
} i"vDRrDe  
} YT][\x  
} +hZ] B<$  
:)j7U3u  
} |K6nOX!i  
qR_SQ VN  
冒泡排序: &hO$4qtN  
0:jsV|5B8  
package org.rut.util.algorithm.support; =I7[L{+~Y  
? 1GJa]G  
import org.rut.util.algorithm.SortUtil; }=TqJy1  
9Il'E6 J  
/** + 2OZJVJ  
* @author treeroot ~R)1nN|  
* @since 2006-2-2 =1eV   
* @version 1.0 vu44!c@  
*/ UC.8DaIPN  
public class BubbleSort implements SortUtil.Sort{ DhHtz.6  
z"9aAytd  
/* (non-Javadoc) r.?qEe8VV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  GsI[N%  
*/ 6<#Slw[  
public void sort(int[] data) { LMt0'Ml9  
int temp; rYD']%2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =Z^un&'  
if(data[j] SortUtil.swap(data,j,j-1); )eVzSj>MT  
} ybC-f'0  
} 5[1@`6j   
} ixg\[5.Q+  
} vs* >onCf  
*13g <#$  
} u4@, *tT  
2m|Eoc&M_  
选择排序: K6ciqwUO  
YcPKM@xo  
package org.rut.util.algorithm.support; -?[O"D"c  
Tq.MubaO  
import org.rut.util.algorithm.SortUtil; iOKr9%9?Z  
 y/z9Ce*>  
/** p!C_:Z5i  
* @author treeroot ^*HVP*   
* @since 2006-2-2 {`($Q$Q1  
* @version 1.0 {_rZRyr  
*/ 'W}~)+zK  
public class SelectionSort implements SortUtil.Sort { u}^a^B$  
llHN2R%(  
/* S_a :ML<  
* (non-Javadoc) 8moUK3w  
* ?0? x+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7ZL,p:f  
*/ :P HUsy  
public void sort(int[] data) { `^?}s-H+  
int temp; nZ"{y  
for (int i = 0; i < data.length; i++) { !."Izz/  
int lowIndex = i; ]r"31.w(  
for (int j = data.length - 1; j > i; j--) { ^- u[q- !  
if (data[j] < data[lowIndex]) { 5`(((_Um+  
lowIndex = j; U f=vs(  
} 3| GNi~  
} Z83q-  
SortUtil.swap(data,i,lowIndex); [c,|Lw4  
} xhw8#  
} cdd P T  
38Bnf  
} 4x=V|"  
Pn~pej5'K  
Shell排序: 8XLxT(YFIs  
nh _DEPMq  
package org.rut.util.algorithm.support; Ry3+/]  
ORUWsl Mt  
import org.rut.util.algorithm.SortUtil; F<6KaZ|  
#|)JD@;Q  
/** t-3v1cv"  
* @author treeroot yg]suU<z]  
* @since 2006-2-2 53g8T+`\(  
* @version 1.0 >xhd[  
*/ dt`9RB$  
public class ShellSort implements SortUtil.Sort{ \] tq7  
ykErt%k<n  
/* (non-Javadoc) E geG,/-`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 23(B43zy  
*/ ,-w-su=J_  
public void sort(int[] data) { $)kk8Q4+K  
for(int i=data.length/2;i>2;i/=2){ jx^|2  
for(int j=0;j insertSort(data,j,i); *+_fP|cv  
} ;t.SiA  
} L7~+x^kw  
insertSort(data,0,1); !=8L.^5c  
} V+4k!  
">0/>>Ry  
/** d A_S"Zc  
* @param data eO|^Lu]+  
* @param j jhjW* F<u  
* @param i ]# tGT0   
*/ $Uv<LVd(  
private void insertSort(int[] data, int start, int inc) { ]be 0I)  
int temp; gJ)h9e*m^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'sT}DX(7M  
} MEdIw#P.}{  
} \NvC   
} 8GF[)z&|P:  
-s?dzX  
} Zztt)/6*  
r'mnkg2,  
快速排序: _qO;{%r  
orcZ yYU  
package org.rut.util.algorithm.support; qaCi)f!Dl  
rR),~ @]sL  
import org.rut.util.algorithm.SortUtil; eR#gG^o8  
1 $KLMW  
/** 0-;DN:>  
* @author treeroot "w:\@Jwu(  
* @since 2006-2-2 |k['wqn"  
* @version 1.0 YoSo0fQA  
*/ ?<>,XyY  
public class QuickSort implements SortUtil.Sort{ X:xC>4]gG'  
D7gX,e  
/* (non-Javadoc) c Eh0Vh-]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _D7HQ  
*/ H3UX{|[  
public void sort(int[] data) { o2 T/IJP  
quickSort(data,0,data.length-1); 7Ap~7)z[  
} Mc#O+'](f  
private void quickSort(int[] data,int i,int j){ vV:M S O'r  
int pivotIndex=(i+j)/2; WwCK  K  
file://swap qH {8n`  
SortUtil.swap(data,pivotIndex,j); -Y 6.?z  
8JjU 9#  
int k=partition(data,i-1,j,data[j]); s)o ,Fi  
SortUtil.swap(data,k,j); k#IS ,NKE  
if((k-i)>1) quickSort(data,i,k-1); ZF/J/;uI  
if((j-k)>1) quickSort(data,k+1,j); 7YQK@lS  
T}b( M*E  
} :?&WKW  
/** PJSDY1T  
* @param data QYf/tQg$  
* @param i &4[#_(pk  
* @param j $Z(g=nS>  
* @return )\I? EU8  
*/ Up!ZCZ$RC  
private int partition(int[] data, int l, int r,int pivot) { Je4.9?Ch  
do{ |)!k @?_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dc\u$'F@S  
SortUtil.swap(data,l,r); Yt O@n@1  
} 0T{c:m~QXe  
while(l SortUtil.swap(data,l,r); {'=Nb 5F  
return l; pdcwq~4~%  
} O0=,&=i  
z6L>!=  
} 'WM~ bm+N  
Z@c0(ol  
改进后的快速排序: {g:/ BFLr#  
c=jI.=mi3  
package org.rut.util.algorithm.support; 6b+ Wl Ib  
 Vgru, '  
import org.rut.util.algorithm.SortUtil; _/z)&0DO  
m|e*Jc  
/** G\,A> mT/P  
* @author treeroot bH WvKv+  
* @since 2006-2-2 #BT6bH08X  
* @version 1.0 xj00eL  
*/ die2<'\4%  
public class ImprovedQuickSort implements SortUtil.Sort {  K+`-[v5\  
!rsqr32]  
private static int MAX_STACK_SIZE=4096; 3 q.[-.q  
private static int THRESHOLD=10; .olP m3MC  
/* (non-Javadoc) 1$3XKw'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^b `>/>  
*/ [WO%rO^p  
public void sort(int[] data) { MRVz:g\mi  
int[] stack=new int[MAX_STACK_SIZE]; )o'U0rAx|a  
&"H<+>`  
int top=-1; x9o^9QJh  
int pivot; xJH9qc ME  
int pivotIndex,l,r; -Y jv&5  
.^N#|hp^  
stack[++top]=0; 8)q]^  
stack[++top]=data.length-1; yZ(Nv $[5  
yK>0[6l  
while(top>0){ q:~`7I  
int j=stack[top--]; 3Ld ;zW  
int i=stack[top--]; +{Vwz  
sKB-7  
pivotIndex=(i+j)/2; amk42  
pivot=data[pivotIndex]; ,TfI  
SU#P.y18%  
SortUtil.swap(data,pivotIndex,j); < jocfTBk  
.^`a6>EQ)|  
file://partition ,d [b"]Zy  
l=i-1; Y5A~iGp8E  
r=j; g`5`KU|  
do{ W|-N>,G  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )r6SGlE[Y  
SortUtil.swap(data,l,r); Mp=kZs/  
} p`l[cVQ<  
while(l SortUtil.swap(data,l,r); V jB`~  
SortUtil.swap(data,l,j); XdIVMXLL\  
^s(X VVA  
if((l-i)>THRESHOLD){ B 1ZHV^  
stack[++top]=i; 4M<JfD  
stack[++top]=l-1; 7^t(RNq  
} neY=:9  
if((j-l)>THRESHOLD){ PHiX:0zT  
stack[++top]=l+1; LG@c)H74  
stack[++top]=j; L};;o+5uJD  
} ,w/mk$v  
MCrO]N($b  
} l^eNZ3:H  
file://new InsertSort().sort(data); <1 1Tqb  
insertSort(data); J&U0y  
} a_iQlsU  
/** xP/1@6]_Je  
* @param data 6_ &6'Vq  
*/ C7 & 6rUX  
private void insertSort(int[] data) { pv?17(w(\  
int temp; [sY1|eX   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a^}P_hg}-  
} J0*]6oD!  
} Nec(^|[   
} g;Sg 2  
)6R#k8'ERr  
} !9<RWNKV)Y  
[?f.0q  
归并排序: g /@yK  
UG?C=Tf  
package org.rut.util.algorithm.support; 5@Lxbe( q  
(7jB_ p%  
import org.rut.util.algorithm.SortUtil; n\ ',F  
io33+/  
/** GqD!W8+  
* @author treeroot Lvj5<4h;  
* @since 2006-2-2 ZYD88kQ  
* @version 1.0 |KrG3-i3X  
*/ W0T i ^@  
public class MergeSort implements SortUtil.Sort{ <pl2 dxy  
,vdP #:  
/* (non-Javadoc) s$\8)V52  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B[_bJ *  
*/ (yTz^o$t|  
public void sort(int[] data) { c+i`Zd.m<  
int[] temp=new int[data.length]; 3;l>x/amk  
mergeSort(data,temp,0,data.length-1); .s*EV!SE  
} #m$%S%s  
*=If1qZs  
private void mergeSort(int[] data,int[] temp,int l,int r){ s riq(A  
int mid=(l+r)/2; nh&<fnh  
if(l==r) return ; .rB;zA;4S)  
mergeSort(data,temp,l,mid); n ua8y(W  
mergeSort(data,temp,mid+1,r); &MQt2aL  
for(int i=l;i<=r;i++){ *u4X<oBS*  
temp=data; kRXg."b(  
} 6'*Uo:]  
int i1=l; |>}0? '/]  
int i2=mid+1; ?N?pe}  
for(int cur=l;cur<=r;cur++){ pr,1Wp0l  
if(i1==mid+1) KJJb^6P48W  
data[cur]=temp[i2++]; (*WZsfk>/<  
else if(i2>r) wukos5  
data[cur]=temp[i1++]; ?G>TaTiK#  
else if(temp[i1] data[cur]=temp[i1++]; _5S$mc8K0  
else JTB~nd>  
data[cur]=temp[i2++]; +e4<z%1  
} CU`Oc>;*T  
} g!Yh=kA'N  
hYv 6-5_  
} 6F&]Mk]V8  
K2MNaB   
改进后的归并排序: iE gM ~  
-+_aL4.  
package org.rut.util.algorithm.support; -Fc#  
4kF .  
import org.rut.util.algorithm.SortUtil; Yg,lJ!q  
n@,eZ!  
/** p{svXP K  
* @author treeroot W#_gvW  
* @since 2006-2-2 `0XbV A  
* @version 1.0 V >uW|6  
*/ fX$4TPy(h  
public class ImprovedMergeSort implements SortUtil.Sort { P:-/3  
$,zM99  
private static final int THRESHOLD = 10; &r5%WRzpYT  
$#JVI:  
/* [%,=0P}  
* (non-Javadoc) j~f 7WJ  
* |b~g^4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2|>wY%  
*/ la|l9N^,  
public void sort(int[] data) { >8;%F<o2  
int[] temp=new int[data.length]; `[:1!I.}-  
mergeSort(data,temp,0,data.length-1); _"bvT?|  
} SA n=9MG  
#I~dv{RX  
private void mergeSort(int[] data, int[] temp, int l, int r) { s^R2jueR  
int i, j, k; HtYR 0J  
int mid = (l + r) / 2; H08YM P>dc  
if (l == r) ;p!hd }C  
return; :BxYaAVt^  
if ((mid - l) >= THRESHOLD) ZLX`[   
mergeSort(data, temp, l, mid); Ns8NaD  
else WzbN=& C]h  
insertSort(data, l, mid - l + 1); VD`2lGdF  
if ((r - mid) > THRESHOLD) p)&\>   
mergeSort(data, temp, mid + 1, r); l"y9XO|  
else = d.W'q|  
insertSort(data, mid + 1, r - mid); A2_3zrE  
%_O>Hy|p  
for (i = l; i <= mid; i++) { <G?85*Nv_  
temp = data; 6-}e-H  
} .V:<w~=b  
for (j = 1; j <= r - mid; j++) { [m[~A|S  
temp[r - j + 1] = data[j + mid]; ?'m5)Z{  
} x)Kh _G  
int a = temp[l]; Tm.w+@  
int b = temp[r]; slO9H6<  
for (i = l, j = r, k = l; k <= r; k++) { '^3pF2lIw  
if (a < b) { VZbIU[5  
data[k] = temp[i++]; v$/i5kcWx  
a = temp; B_jI!i{N%o  
} else { }C`0" 1  
data[k] = temp[j--]; > BCX%<&  
b = temp[j];  grA L4  
} r74w[6(  
} s(Bi& C\  
} 0MGK3o)  
[z@RgDX v  
/** .h^Ld,Chj  
* @param data u`,R0=<4  
* @param l A_U0HVx_  
* @param i K :ptfD  
*/ Bin&:%|9?  
private void insertSort(int[] data, int start, int len) { >.~k?_Of  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5{aQ4H>~tx  
} 4GA-dtyV&  
} )?y"NVc*  
} 8Kkr1}!wd  
} #|E. y^IC  
&scD)  
堆排序: BTtYlpN6  
iGNKf|8{  
package org.rut.util.algorithm.support; xmd$Jol^  
{\Y,UANZ  
import org.rut.util.algorithm.SortUtil; B#n}y  
#wuE30d  
/** g~u!,Zc  
* @author treeroot *X5LyO3-gP  
* @since 2006-2-2 3PeJPw  
* @version 1.0 |]b/5s;>  
*/ 0Hf-~6  
public class HeapSort implements SortUtil.Sort{ 481u1  
N Z9,9  
/* (non-Javadoc) k rjd:*E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) baGI(Dk  
*/ k-0e#"B  
public void sort(int[] data) { uRhH_c-6C  
MaxHeap h=new MaxHeap(); S]@iS[|?  
h.init(data); v3#47F)  
for(int i=0;i h.remove(); 5*Iz3vTq  
System.arraycopy(h.queue,1,data,0,data.length); ')~HOCBSE  
} IWnW(>V  
D"5~-9<  
private static class MaxHeap{ MRu+:Y=K  
S@-X?Lu  
void init(int[] data){ YP97D n  
this.queue=new int[data.length+1]; sOenR6J<$  
for(int i=0;i queue[++size]=data; :PkSX*E[q  
fixUp(size); T5G+^XDA  
} m':m`,c!  
} -8e tH&  
hV>Ey^Ty  
private int size=0; jZ yh   
Z6pDQ^Ii  
private int[] queue;  /t P  
1h{_v!X  
public int get() { X)5O@"4 ?  
return queue[1]; mz '8  
} n&&y\?n  
g;@PEZk1  
public void remove() { 3qZ{yr2N[  
SortUtil.swap(queue,1,size--); <!$Cvx\U  
fixDown(1); wt,N<L  
} rMloj8O*  
file://fixdown CKgyv%T5m:  
private void fixDown(int k) { wu'60po  
int j; izA3INT  
while ((j = k << 1) <= size) { {+}Lc$O#C  
if (j < size %26amp;%26amp; queue[j] j++; kp"cHJNx  
if (queue[k]>queue[j]) file://不用交换 -7Wmq[L /  
break; '.yr8  
SortUtil.swap(queue,j,k); ] "_'o~  
k = j; |V]E8Qt  
} f}3bYF  
} ]P^ +~  
private void fixUp(int k) { 6Wp:W1E{`  
while (k > 1) { =wc[ r?7  
int j = k >> 1; Hq8.O/Y"=  
if (queue[j]>queue[k]) G9Ezm*I;:  
break; 2YQ$hL~  
SortUtil.swap(queue,j,k); $ E6uA}s  
k = j; H& +s&F{%  
} \ 02e zG  
} h~t]WN  
B[h9epU]K  
} E>v~B;@  
E"!*ASN  
} beoMLHp  
so?1lG  
SortUtil: D1 z3E;:  
f}4h}Cq  
package org.rut.util.algorithm; !s:|Ddv  
(reD  
import org.rut.util.algorithm.support.BubbleSort; =?hlgQ  
import org.rut.util.algorithm.support.HeapSort; I+SL0  
import org.rut.util.algorithm.support.ImprovedMergeSort; ( d.i np(  
import org.rut.util.algorithm.support.ImprovedQuickSort; dl4.jLY  
import org.rut.util.algorithm.support.InsertSort; Qfi5fp=f  
import org.rut.util.algorithm.support.MergeSort; d=XhOC$  
import org.rut.util.algorithm.support.QuickSort; C+j+q648>  
import org.rut.util.algorithm.support.SelectionSort; @VAhmYz  
import org.rut.util.algorithm.support.ShellSort; wVTo7o%U  
gS ]'^Sr  
/** dewu@  
* @author treeroot czzV2P/t}  
* @since 2006-2-2 ] $*cmk(Y  
* @version 1.0 &0`L;1R  
*/ q ^?{6}sy  
public class SortUtil { R<)uvW_@  
public final static int INSERT = 1; LWE !+(n  
public final static int BUBBLE = 2; rO~D{)Nu  
public final static int SELECTION = 3; I/l]Yv!  
public final static int SHELL = 4; a@. /e @p  
public final static int QUICK = 5; F=H=[pSe  
public final static int IMPROVED_QUICK = 6; '*:YC  
public final static int MERGE = 7; Ho/5e*X  
public final static int IMPROVED_MERGE = 8; *`W82V  
public final static int HEAP = 9; QX4I+x~oo\  
f$L5=V  
public static void sort(int[] data) { sAxn ; `  
sort(data, IMPROVED_QUICK); |^{ IHF\  
} \wd~ Y  
private static String[] name={ .:0nK bW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z3d&I]Tf  
}; f]4gDmn^  
K+Qg=vGY  
private static Sort[] impl=new Sort[]{ FP$]D~DMo  
new InsertSort(), 2iu;7/  
new BubbleSort(), <fxYTd<#D[  
new SelectionSort(), ^]kDYhe*Y  
new ShellSort(), K67x.PZ  
new QuickSort(), wU3Q  
new ImprovedQuickSort(), 03xQ%"TU<  
new MergeSort(), x]:mc%4-Z  
new ImprovedMergeSort(), dNR4h  
new HeapSort() |@ + x9|'W  
}; :;EzvRy  
PHoW|K_e  
public static String toString(int algorithm){ $8Zw<aEJ  
return name[algorithm-1]; ^t*BWJxPC  
} %$08*bAtB7  
A-<qr6q  
public static void sort(int[] data, int algorithm) { z y.Ok 49  
impl[algorithm-1].sort(data); XjC+kH  
} YG%Zw  
C5m*pGImG  
public static interface Sort { G100L}d"N  
public void sort(int[] data); ;Wr$hDt^  
} 5ZPl`[He  
4-o$OI>  
public static void swap(int[] data, int i, int j) { pq@ad\8  
int temp = data; /{lls2ycW%  
data = data[j]; +XQ6KG&  
data[j] = temp; #f[yp=uI:  
}  QS!b]a3  
} w/R^Vwq  
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