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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。 62ru%<x=  
插入排序: ] !*K|?VL  
, LwinjHA*  
package org.rut.util.algorithm.support; ~+{*KPiD  
N&G'i.w/  
import org.rut.util.algorithm.SortUtil; 2Rw<0.i|  
/** -o~zb-E  
* @author treeroot mo<*h&;&  
* @since 2006-2-2 $Z;8@O3  
* @version 1.0 0y$VPgsKf  
*/ P?q HzNGi7  
public class InsertSort implements SortUtil.Sort{ \SmsS^z(]  
9X*Z\-  
/* (non-Javadoc) 9iT9ZfaW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) te[uAJ1 N  
*/ ;R 6f9tu2  
public void sort(int[] data) { W!HjO;  
int temp; Xc NL\fl1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hRXnig{;3  
} T%.Y so{  
} 1^^{;R7N  
} =( ZOn=IL  
Zsapu1HoL\  
} !r.-7hR$  
:sw5@JdJ  
冒泡排序: ~ ?nn(Q-  
->pU!f)\X  
package org.rut.util.algorithm.support; PW@ :fM:q  
ue3 ].:  
import org.rut.util.algorithm.SortUtil; TAh'u|{u2  
9Pg6,[*u  
/** .pZYPKMaE  
* @author treeroot Up%XBA  
* @since 2006-2-2 P 4)Q5r  
* @version 1.0 %H?B5y  
*/ 9.xb-m7  
public class BubbleSort implements SortUtil.Sort{ $|Ol?s  
<`-sS]=d}  
/* (non-Javadoc) [[_>D M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uy=yA  
*/ DCa[?|Y  
public void sort(int[] data) { /*gs]  
int temp; [3=Y 9P:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %wl:>9]  
if(data[j] SortUtil.swap(data,j,j-1); +D @B eQu  
} 2Rys:$  
} r=.@APZB  
} B{0]v-w  
} :!Z|_y{b  
|{|B70v3Co  
} v@G&";|  
q/w5Dx|:  
选择排序: V*JqC  
A]Hz?i  
package org.rut.util.algorithm.support; ({Yfsf,  
cb'Y a_  
import org.rut.util.algorithm.SortUtil; k2lo GvBJ  
ai/]E6r  
/** C!547(l[  
* @author treeroot 7gLk~*  
* @since 2006-2-2 >~7XBb08  
* @version 1.0 8MW-JZ  
*/ !m=Js"  
public class SelectionSort implements SortUtil.Sort { ,c&t#mu*0  
T/u61}'U{  
/* 3 u=\d)eq  
* (non-Javadoc) })8D3kzX)  
* o S{hv:)>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )6"p@1\u  
*/ 9pi{)PDJ  
public void sort(int[] data) { X9c<g;  
int temp; jB9~'>JY  
for (int i = 0; i < data.length; i++) { DB|w&tygq  
int lowIndex = i; 2T%sHp~qt  
for (int j = data.length - 1; j > i; j--) { ' rXf  
if (data[j] < data[lowIndex]) { /Xc9}~t6  
lowIndex = j; H{_D#It  
} [Ous|a[)o  
} hX,RuI  
SortUtil.swap(data,i,lowIndex); 08AD~^^  
} Q6 o1^s  
} ]ZR` 6|"VO  
|ggtb\W  
} _lT'nFe =Q  
7uUq+dp  
Shell排序: *E>R1bJ8  
OP=oSfa  
package org.rut.util.algorithm.support; %Y/;jC Y  
w|I5x}ZFG  
import org.rut.util.algorithm.SortUtil; pi70^`@'B  
kwww5p ["  
/** F;/^5T3wI  
* @author treeroot $B9?>a|{A  
* @since 2006-2-2 FP y}Wc*UA  
* @version 1.0 nT~XctwF  
*/ (-;(wCEE  
public class ShellSort implements SortUtil.Sort{ ~[aV\r?  
toj5b;+4F  
/* (non-Javadoc) '9qyf<MlY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jpXbFWgN  
*/ iBWEZw)  
public void sort(int[] data) { ]4')H;'y  
for(int i=data.length/2;i>2;i/=2){ Bn.R,B0PL  
for(int j=0;j insertSort(data,j,i); Dbx zqd  
} 0%|)=T3Slu  
} 1NTx?JJfW  
insertSort(data,0,1); wmMn1q0F  
} 2A*,9S|Y  
qUg/mdv&  
/** "9X(.v0ze  
* @param data G^;]]Ji"  
* @param j Xmb##:  
* @param i 9J_vvq`%`  
*/ fS8Pi,!  
private void insertSort(int[] data, int start, int inc) { ",5=LW&,  
int temp; (Xz q(QV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pvWj)4e  
} o8A8fHl  
} {65Y Tt%  
}  *ni0.  
S@ y! 0,  
} o5+7Lt]  
c>r~pY~$  
快速排序: n~jW  
1?"Zrd  
package org.rut.util.algorithm.support; ]|IeE!6  
\|4F?Y  
import org.rut.util.algorithm.SortUtil; 31]Vo;D  
P=E10  
/**   LR4W  
* @author treeroot sUk n.g!  
* @since 2006-2-2 *uxKI:rB:  
* @version 1.0 'Vhnio;qC  
*/ R(}!gv}s  
public class QuickSort implements SortUtil.Sort{ fkk9&QB%(  
A-^B ?E  
/* (non-Javadoc) _?$')P|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b+dmJ]c  
*/ hy~KY6Ta  
public void sort(int[] data) { ds2xl7jg  
quickSort(data,0,data.length-1); dJb7d`  
} SM<qb0  
private void quickSort(int[] data,int i,int j){ M%!j\}2A  
int pivotIndex=(i+j)/2; S4E@wLi  
file://swap 2@&"*1(Xu  
SortUtil.swap(data,pivotIndex,j); OaByfo<S  
idS+&:'  
int k=partition(data,i-1,j,data[j]); S!iDPl~  
SortUtil.swap(data,k,j); \pI ,6$'  
if((k-i)>1) quickSort(data,i,k-1); D{+D.4\  
if((j-k)>1) quickSort(data,k+1,j); cvpZF5mL]U  
COH.`Tv{*  
} ~(cqFf  
/** +~;#!I@Di  
* @param data R^K:hKQ  
* @param i mm | *  
* @param j a^&RV5o  
* @return nF 'U*  
*/ "nNT9 K|  
private int partition(int[] data, int l, int r,int pivot) { b#S-u }1PE  
do{ Hjy4tA7,l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ds8x9v)^  
SortUtil.swap(data,l,r); 2\Yv;J+;  
} PJh97%7  
while(l SortUtil.swap(data,l,r); $K 1)2WG  
return l; kPnuU!  
} `_{,4oi  
hSk  
} J=#9eW  
Q0""wR q'  
改进后的快速排序: 52*KRq o  
h{PJ4U{W  
package org.rut.util.algorithm.support; Wk/Il^YG  
_<)HFg6  
import org.rut.util.algorithm.SortUtil; ^P*+0?aFr  
1a#R7chl  
/** ksqb& ux6  
* @author treeroot >>>MTV f  
* @since 2006-2-2 :XO7#P  
* @version 1.0 V##TG0  
*/ NV3oJ0f&2  
public class ImprovedQuickSort implements SortUtil.Sort { ^cojETOv  
3^F1hCB  
private static int MAX_STACK_SIZE=4096; 35SL*zS@-  
private static int THRESHOLD=10; 9sB LCZ  
/* (non-Javadoc) ~rbJtz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u$1^=  
*/ liH1r1M  
public void sort(int[] data) { I#CS;Yh95  
int[] stack=new int[MAX_STACK_SIZE]; v/G^yZa  
!p 70g0+  
int top=-1; ze#ncnMo  
int pivot; fH_Xm :%  
int pivotIndex,l,r; {?uswbk.  
V}t8H  
stack[++top]=0; Ua>.k|>0  
stack[++top]=data.length-1; 7FP @ vng  
zm^ 5WH  
while(top>0){ ;:ocU?  
int j=stack[top--]; yc@ :*Z  
int i=stack[top--]; 9CHn6 v ~)  
G4,BcCPQ  
pivotIndex=(i+j)/2; El3Ayd3  
pivot=data[pivotIndex]; "I45=nf  
ZF;s`K)  
SortUtil.swap(data,pivotIndex,j); $s5D/60nO  
(7}Zh|@W  
file://partition L(kW]  
l=i-1; :j% B(@b  
r=j; ?} U l(  
do{ X0%BE!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R&1 xZFj  
SortUtil.swap(data,l,r); 3+:uV  
} _." X# }W  
while(l SortUtil.swap(data,l,r); 6)#%36rP  
SortUtil.swap(data,l,j); _1HEGX\  
coc :$Sr%  
if((l-i)>THRESHOLD){ Sy34doAZ  
stack[++top]=i; C<iOa)_@Q  
stack[++top]=l-1; \!'K#%]9  
} hUMFfc ?  
if((j-l)>THRESHOLD){ %'[ pucEF  
stack[++top]=l+1; 0:k MnHn\  
stack[++top]=j; w'!J   
} [wjH;f>SQ  
f n\&%`U  
} x\6i(k-  
file://new InsertSort().sort(data); <fcw:Ae  
insertSort(data); [fXC ;c1  
} 7#iT33(3  
/** 4 {3< `  
* @param data 9 kS;_(DB  
*/ 1"HSM =p  
private void insertSort(int[] data) { . aqP=  
int temp; ),+u>Os&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jl^THoEL  
} [$(/H;  
} 3+# "4O  
} >dqeGM7Np>  
t%>x}b"2T  
} p` LPO  
p9$=."5  
归并排序: e.^Y4(  
xDBHnr}[  
package org.rut.util.algorithm.support; Z8_Q Kw>  
TANt*r7  
import org.rut.util.algorithm.SortUtil; }X*.Vv A  
Qz?r4kR  
/** ; +E@h=?  
* @author treeroot LC:bHM, e  
* @since 2006-2-2 vxC,8Z  
* @version 1.0 `` mi9E  
*/ z@S39Xp==  
public class MergeSort implements SortUtil.Sort{ A4uDuB;;ZQ  
*Ad7GG1/u  
/* (non-Javadoc) 0^{?kg2o_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IKV:J9  
*/ (KxL*gB  
public void sort(int[] data) { PNMf5'@m  
int[] temp=new int[data.length]; ePJtdKN:  
mergeSort(data,temp,0,data.length-1); ~_Mz05J-\_  
} U1^R+ *yp  
f@a@R$y  
private void mergeSort(int[] data,int[] temp,int l,int r){ sZhl.[&zo  
int mid=(l+r)/2; |+MV%QG;  
if(l==r) return ; a,N?GxK~  
mergeSort(data,temp,l,mid); Tse Pdkk  
mergeSort(data,temp,mid+1,r); (^Kcyag4  
for(int i=l;i<=r;i++){ gZr/Dfy  
temp=data; rpT{0 >5  
} 9v<Sng  
int i1=l; Rl"" aZ  
int i2=mid+1; 21BlLz  
for(int cur=l;cur<=r;cur++){ 5CsJghTw  
if(i1==mid+1) IlcFW  
data[cur]=temp[i2++]; k98}Jx7J)"  
else if(i2>r) VoJelyzh  
data[cur]=temp[i1++]; P2Ja*!K]  
else if(temp[i1] data[cur]=temp[i1++]; 1=t\|Th-  
else  ,JcQp=g  
data[cur]=temp[i2++]; I!;#Nk>  
} e1RtoNF^  
}  o2ndnIL  
-R;.Md_  
} O$%C(n(  
Ek,s6B)'d  
改进后的归并排序: .#;;pu7W  
Tdr^~dcQ  
package org.rut.util.algorithm.support; RkJ\?  
u= K?K  
import org.rut.util.algorithm.SortUtil; ;6} *0V_!k  
M,Px.@tw.  
/** 8P3EQY -  
* @author treeroot 9 0[gXj  
* @since 2006-2-2 1b'1vp  
* @version 1.0 {=,?]Z+  
*/ XRI1/2YA  
public class ImprovedMergeSort implements SortUtil.Sort { 0=8.8LnN(  
&:-`3J-  
private static final int THRESHOLD = 10; )(&g\  
gT R:9E:B  
/* |Js96>B:  
* (non-Javadoc) Y 1 i!  
* ,F J9C3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~`MGXd"o  
*/ 0rT-8iJp4P  
public void sort(int[] data) { w<awCp  
int[] temp=new int[data.length]; cmu5KeH  
mergeSort(data,temp,0,data.length-1); %&^F.JTt\  
} t9PS5O ;  
~"5WQK`@  
private void mergeSort(int[] data, int[] temp, int l, int r) { S&V5zB""n  
int i, j, k; CD^_>sya  
int mid = (l + r) / 2; ^n<p#0)+a  
if (l == r) QH4nb h4  
return; 7fl'nCo\"  
if ((mid - l) >= THRESHOLD) mB#`{|1[  
mergeSort(data, temp, l, mid); u:N/aaU=  
else xGqe )M>8?  
insertSort(data, l, mid - l + 1); /+J?Ep(_  
if ((r - mid) > THRESHOLD) P!m~tu}B  
mergeSort(data, temp, mid + 1, r); y6; '?.Y1  
else 7BF't!-2F  
insertSort(data, mid + 1, r - mid); )j@k[}R#g  
gzP(Lf I5  
for (i = l; i <= mid; i++) { gW6lMyiLb  
temp = data; qrNW\ME  
} T{|'<KT  
for (j = 1; j <= r - mid; j++) { T_,LK7D  
temp[r - j + 1] = data[j + mid]; mxQS9y  
} ix]3t^  
int a = temp[l]; X<(h)&E  
int b = temp[r]; ZH`6>:  
for (i = l, j = r, k = l; k <= r; k++) { dp2".  
if (a < b) { t_,iV9NrZ  
data[k] = temp[i++]; _>A])B ^  
a = temp; f<WnPoV  
} else { F)_Rs5V:(  
data[k] = temp[j--]; PKfxL}:"8  
b = temp[j]; pLBp[GQ  
} xvjHGgWSxc  
} %o#D"  
} !V@Y \M d  
Gr?"okaA  
/** klUxt?-  
* @param data ozkN&0  
* @param l 9|Jmj @9  
* @param i 9T|7edl  
*/ F^T7u?^)  
private void insertSort(int[] data, int start, int len) { n1uJQt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >}u?{_s *0  
} Zu\#;O   
} tmK@Veb*a'  
} 7x-k-F3  
} yKOf]m>#  
qJ"dkT*  
堆排序: *-_` xe  
{ j&|Em]  
package org.rut.util.algorithm.support; #B`"B  
+#1WOQfAD  
import org.rut.util.algorithm.SortUtil; N.xmHvPk  
I^M3>}p  
/** 0gO2^m)W  
* @author treeroot N##3k-0Ao  
* @since 2006-2-2 yW|yZ(7  
* @version 1.0 pVt-7 AgW  
*/ )5d&K8@  
public class HeapSort implements SortUtil.Sort{ ;n7k_K#0z!  
Q`AJR$L  
/* (non-Javadoc) 8dIgw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A>7'W\R  
*/ #5G!lbH  
public void sort(int[] data) { ,UWO+B]  
MaxHeap h=new MaxHeap(); uA:;OM}  
h.init(data); LL9Mty,  
for(int i=0;i h.remove(); Ez<J+#)t  
System.arraycopy(h.queue,1,data,0,data.length); =kZPd>&L  
} U G^6I5  
b0LQ$XM>8  
private static class MaxHeap{ OYG8%L  
Ha)w*1&w"  
void init(int[] data){ S:rW}rJ  
this.queue=new int[data.length+1]; kc~Z1  
for(int i=0;i queue[++size]=data;  `U(A 5  
fixUp(size); ttZ!P:H2  
} `j4ukOnG  
} <po(7XB  
YaSwn3i/@S  
private int size=0; |4X:>Ut]  
x*BfRj  
private int[] queue; rCYNdfdpp  
$vGl Z<3g  
public int get() { KMoRMCT  
return queue[1]; *|euC"5c  
} t4h05i  
7:M%w'oR  
public void remove() { d<7xSRC   
SortUtil.swap(queue,1,size--); rU.ew~  
fixDown(1); Z?"Pkc.Ei  
} tBrd+}e2*  
file://fixdown jn)~@~c  
private void fixDown(int k) { bB)EJCPq>  
int j; n2(~r 'r)  
while ((j = k << 1) <= size) { ]7dm`XV  
if (j < size %26amp;%26amp; queue[j] j++; ^U~YG=!ww  
if (queue[k]>queue[j]) file://不用交换 2{+\\.4Evk  
break; <-}6X  
SortUtil.swap(queue,j,k); ut-UTW  
k = j; y3;G<9K2c]  
} 4^AE;= Q  
} Q CfA3*  
private void fixUp(int k) { TO( =4;U  
while (k > 1) { >-y'N.l^  
int j = k >> 1; 7|,5;  
if (queue[j]>queue[k]) <FGNV+?%e  
break; E@ t~juF!  
SortUtil.swap(queue,j,k); A`X$jpAn&  
k = j; T!v%NZj3  
} ?"qU.}kGL  
} H~||]_q|  
5G\vV]RR&  
} m:p1O3[R  
d['BtVJ  
} 8@b@y|#]X  
eW7;yH  
SortUtil: ^P&y9dC.  
=C<_rBY  
package org.rut.util.algorithm; 93o}vy->  
:j?Lil%R  
import org.rut.util.algorithm.support.BubbleSort; =P0~=UP  
import org.rut.util.algorithm.support.HeapSort; 5^0W\  
import org.rut.util.algorithm.support.ImprovedMergeSort; G.T}^ xHmL  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q3z-v&^E9  
import org.rut.util.algorithm.support.InsertSort; T-|z18|!  
import org.rut.util.algorithm.support.MergeSort; q\mVZyj  
import org.rut.util.algorithm.support.QuickSort; BS+N   
import org.rut.util.algorithm.support.SelectionSort; oEKLuy  
import org.rut.util.algorithm.support.ShellSort; ?N$  
/o8h1L=  
/** ]_F%{8|  
* @author treeroot Xv=n+uo  
* @since 2006-2-2 <A"}Krq?  
* @version 1.0 WI}P(!h\J  
*/ ;uDH&3W  
public class SortUtil { Et`z7Q*e  
public final static int INSERT = 1; =AZ>2P  
public final static int BUBBLE = 2; f4`=yj*  
public final static int SELECTION = 3; }1d 6d3b  
public final static int SHELL = 4; P) GBuW  
public final static int QUICK = 5; _j <46^  
public final static int IMPROVED_QUICK = 6; t[iE >  
public final static int MERGE = 7; z#bO FVg#  
public final static int IMPROVED_MERGE = 8; >KM<P[BRd  
public final static int HEAP = 9; F!'b_ gmz  
Ngh9+b6[  
public static void sort(int[] data) { HtmJIH:  
sort(data, IMPROVED_QUICK); -b r/  
} !*+~R2&b  
private static String[] name={ k gWF@"_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r-&4<=C/N  
}; LuR.;TiW  
5XA6IL|/l  
private static Sort[] impl=new Sort[]{ y=5s~7]  
new InsertSort(), &``;1/J*W  
new BubbleSort(), s{`r$:!  
new SelectionSort(), S-'iOJ 1]  
new ShellSort(), q=UKL`;C}U  
new QuickSort(), ~A [ Ju%R  
new ImprovedQuickSort(), gWgYZX  
new MergeSort(), xr)kHJ:v  
new ImprovedMergeSort(), im4V6 f;%  
new HeapSort() }T4"#'`  
}; dl(cYP8L  
WR gAc%  
public static String toString(int algorithm){ 2/qfK+a  
return name[algorithm-1]; $*L@y m  
} ak0KrVF  
r?[PIf  
public static void sort(int[] data, int algorithm) { C03ehjT<  
impl[algorithm-1].sort(data); )uZ<?bkQ  
} "2N3L8?k  
"7Zb)Ocb  
public static interface Sort { GkaIqBS  
public void sort(int[] data); 6hAeLlU1  
} 8O("o7~"  
Wi hQj  
public static void swap(int[] data, int i, int j) { iV(B0z  
int temp = data; P0k|33;7L  
data = data[j]; l J;wl|9  
data[j] = temp; o^d(mJZ.F~  
} F+*: >@3  
} X.%Xi'H  
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