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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。 [79iC$8B|  
插入排序: U28frRa  
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package org.rut.util.algorithm.support; T!X`"rI  
+!cibTQTT  
import org.rut.util.algorithm.SortUtil; k"F\4M  
/** 2#Du5d  
* @author treeroot S0w:R:q}L  
* @since 2006-2-2 !:3X{)4  
* @version 1.0 V.}3d,Em%]  
*/ #c$z&J7e  
public class InsertSort implements SortUtil.Sort{ j1O_Az|3  
"0aJE1) p:  
/* (non-Javadoc) oH;9s-Be  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r !;wKO  
*/ vLIaTr gz  
public void sort(int[] data) { 9>r@wK'Pn  
int temp; a: 2ezxP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _6.Y3+7I  
} |_m N:(3  
} Jd28/X5&  
} h9kwyhd"  
\49s;\I]  
} B^@X1EE  
Xbu P_U'  
冒泡排序: >Xi/ p$$7u  
UsgrI>|l  
package org.rut.util.algorithm.support; TjS &V  
O+"a 0:GM  
import org.rut.util.algorithm.SortUtil; 3(`P x}  
rGlnu.mK^  
/** k]rc -c-  
* @author treeroot [Om,Q<  
* @since 2006-2-2 a5?Yh<cJ  
* @version 1.0 6t4Khiwx  
*/ nL+y"O  
public class BubbleSort implements SortUtil.Sort{ 6z2%/P-'  
@a (-U.CZ  
/* (non-Javadoc) ldt]=Sqy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t"?)x&dS  
*/ $]gflAe2  
public void sort(int[] data) { Gq-~z mg  
int temp; NA+7ey6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ yX.; x 0  
if(data[j] SortUtil.swap(data,j,j-1); 5Z`f .}^w  
} H'}6Mw%ra  
} jI%glO'2  
} ,olP}  
} yof8LWXx  
-I[KIeF  
} NqM=Nu\  
"V`5 $ur  
选择排序: rV}&G!V_t  
v8K`cijSS  
package org.rut.util.algorithm.support; -z">ov-)  
V1yP{XT=  
import org.rut.util.algorithm.SortUtil; $|t={s34  
.'b| pd  
/** JnLF61   
* @author treeroot EMzJyGt7  
* @since 2006-2-2 ajW2HH*9}A  
* @version 1.0 ?5;N=\GQ  
*/ 40G'3HOp  
public class SelectionSort implements SortUtil.Sort { zEt!Pug  
W'6sY@0m  
/* 1Gy [^  
* (non-Javadoc) B Q2N_*v  
* /[A#iTe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K[S)e!\.  
*/ 9.BgsV .  
public void sort(int[] data) { VniU:A  
int temp; kK:U+`+  
for (int i = 0; i < data.length; i++) { e~geBlLar  
int lowIndex = i; o4jh n[Fx  
for (int j = data.length - 1; j > i; j--) { 5?m4B:W  
if (data[j] < data[lowIndex]) { Z1_F)5pn  
lowIndex = j; :eIQF7-  
} beB3*o  
} [\rzXE  
SortUtil.swap(data,i,lowIndex); ]3~ u @6  
} }Fsr"RER@{  
} C;~LY&=  
B!U;a=ia  
} 5A+@xhRf  
l{*Ko~g  
Shell排序: _*E j3=u  
tX6_n%/L  
package org.rut.util.algorithm.support; n=?wX#rEC#  
*fz#B/ _o  
import org.rut.util.algorithm.SortUtil; |g'ceG-  
3H|drj:KV  
/** R_b4S%jhx  
* @author treeroot yMt:L)+  
* @since 2006-2-2 qkqtPbQ 7  
* @version 1.0 c Qe3  
*/ A4(k<<xjE  
public class ShellSort implements SortUtil.Sort{ w c  
b,X+*hRt  
/* (non-Javadoc) "]|7%]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7A h   
*/ p`EgMzVO,  
public void sort(int[] data) { xQl}~G]!  
for(int i=data.length/2;i>2;i/=2){ nu Vux5:  
for(int j=0;j insertSort(data,j,i); .osG"cS  
} qWf[X'  
} 8`6G_:&X  
insertSort(data,0,1); 2A:&Cqo  
} ;y-:)7J  
j{D tjV8  
/** &xZSM,  
* @param data )+ 'r-AF*  
* @param j 7 IJn9b  
* @param i 4sW'pH  
*/ u%lUi2P2E  
private void insertSort(int[] data, int start, int inc) { kP'm$+1or  
int temp; UD.ZnE{"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); efE=5%O  
} ":q+"*fy  
} T8&eaAoo  
} 97~>gFU77#  
OZC yg/K  
} jFip-=T{4  
 e<(6x[_  
快速排序: jGT|Xo>t  
hA;Ai:8  
package org.rut.util.algorithm.support; %hlgLM  
sVGQSJJ5  
import org.rut.util.algorithm.SortUtil; yFS{8yrRUU  
}Q@~_3,UJ  
/** "n)AlAV@  
* @author treeroot =:!>0~  
* @since 2006-2-2 }h1eB~6M  
* @version 1.0 bYZU}Kl;(  
*/ UWhJkJsX  
public class QuickSort implements SortUtil.Sort{ ' sNiJ>  
.Z#/%y3S  
/* (non-Javadoc) &=kb>*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }"SqB{5e(  
*/ wX_~H*m?  
public void sort(int[] data) { e ;^}@X  
quickSort(data,0,data.length-1); @WJ\W`P  
} M< .1U?_#  
private void quickSort(int[] data,int i,int j){ ~mwIr  
int pivotIndex=(i+j)/2; >#'?}@FWQN  
file://swap ^b}Wl0Fn  
SortUtil.swap(data,pivotIndex,j); C/H;|3.X  
-Sn'${2  
int k=partition(data,i-1,j,data[j]); LAY:R{vI  
SortUtil.swap(data,k,j); _*n `*"  
if((k-i)>1) quickSort(data,i,k-1); fms(_Q:R?  
if((j-k)>1) quickSort(data,k+1,j); cA|vH^:  
yimK"4!j5A  
} e /1x/v'  
/** +95v=[t#Ut  
* @param data Yi)s=Q:  
* @param i 5pC}ZgEa<  
* @param j t`{T:Tjc  
* @return $4~Z]-38#A  
*/ G "!v)o  
private int partition(int[] data, int l, int r,int pivot) { (9kR'kr  
do{ #HW<@E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ok|Dh;1_  
SortUtil.swap(data,l,r); VIN0kRQ#  
} RgW#z-PZF  
while(l SortUtil.swap(data,l,r); 8ZqLG a]  
return l; 3Zl:rYD?  
}  I8`$a  
nm& pn*1  
} MB $aN':  
<VQ)}HW;k  
改进后的快速排序: 1r_V$o$  
;ISe@ yR;  
package org.rut.util.algorithm.support; k<CbI V  
mF|KjX~s  
import org.rut.util.algorithm.SortUtil; )7[#Ti  
u"m(a:jQ  
/** ^Il*`&+?P  
* @author treeroot `C C=?E  
* @since 2006-2-2 &6 <a<S  
* @version 1.0 h_+  
*/ D4{KU%Xp&  
public class ImprovedQuickSort implements SortUtil.Sort { QxGcRlpLK  
%[s%H)e)  
private static int MAX_STACK_SIZE=4096; R dwt4A+  
private static int THRESHOLD=10; kP^A~ZO.  
/* (non-Javadoc) kd\Hj~*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l'aCpzf  
*/ ah_ >:x  
public void sort(int[] data) { QIlZZ  
int[] stack=new int[MAX_STACK_SIZE]; OG$v"Yf~  
M?L$xE_&  
int top=-1; k.K#i /t  
int pivot; P\<:.8@$S  
int pivotIndex,l,r; I[v`)T'_{  
t|i<}2  
stack[++top]=0; noL9@It0  
stack[++top]=data.length-1; M@<9/xPS  
f,Dic%$q  
while(top>0){  X(X[v]  
int j=stack[top--]; #0Y_!'j  
int i=stack[top--]; %Nv w`H  
qIQRl1Tw;V  
pivotIndex=(i+j)/2; *o4a<.hd2  
pivot=data[pivotIndex]; Uc'}y!R  
)RvX}y-  
SortUtil.swap(data,pivotIndex,j); EY<"B2_%  
m 8b,_1  
file://partition !khEep}  
l=i-1; s</qT6@  
r=j; 6 h,!;`8O  
do{ 3NDddrL9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z+J4 q9^$  
SortUtil.swap(data,l,r); `&7tADFB  
} -f mJkI  
while(l SortUtil.swap(data,l,r); jVQ89vf ~  
SortUtil.swap(data,l,j); RR ^7/-  
r{9fm,  
if((l-i)>THRESHOLD){ X!^|Tass  
stack[++top]=i; 9J?s:"j  
stack[++top]=l-1; -~lq <M  
} dzPewOre*  
if((j-l)>THRESHOLD){ z'& fEsjy  
stack[++top]=l+1; 5TB6QLPEwY  
stack[++top]=j; 1^X)vck  
} ;l0 dx$w  
Z%:>nDZV  
} y32$b,%Xi,  
file://new InsertSort().sort(data); KNd<8{'.  
insertSort(data); L/exR6M7  
} /\h*v!:  
/** ?_^{9q%9  
* @param data ZIc.MNq  
*/ _UP fqC ?  
private void insertSort(int[] data) { o!K DeY  
int temp; ""a$[[ %WC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LlO8]b!P-^  
} @x+2b0 b  
} j;Z?q%M{6  
} ;-kDJ i  
BR@m*JGajz  
} URrx7F98  
B6k<#-HAT  
归并排序: 6X%g-aTs  
=(D"(OsQ/  
package org.rut.util.algorithm.support; h )5S4)  
&k%>u[Bo  
import org.rut.util.algorithm.SortUtil; /G'3!S  
A8*zB=C  
/** U].]K   
* @author treeroot ~Ss,he]Er  
* @since 2006-2-2 ][v]Nk  
* @version 1.0 LrbD%2U$j5  
*/ A8Q^y AP^  
public class MergeSort implements SortUtil.Sort{ {#k[-\|;  
CL4N/[UM  
/* (non-Javadoc) 8Ejb/W_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *1<kYrB  
*/ iI";m0Ny  
public void sort(int[] data) { Gw$5<%sB  
int[] temp=new int[data.length]; ~<n.5q%Z  
mergeSort(data,temp,0,data.length-1); )B0%"0?`8  
} >!xyA;  
/0XMQy  
private void mergeSort(int[] data,int[] temp,int l,int r){ Tgr,1) T  
int mid=(l+r)/2; ()l3X.t,$  
if(l==r) return ; ~BmA!BZV`  
mergeSort(data,temp,l,mid); ji1vLu4|t  
mergeSort(data,temp,mid+1,r); 0zB[seyE  
for(int i=l;i<=r;i++){ "O4A&PJD  
temp=data; r9})~>   
} 5P-t{<]tx  
int i1=l; ([dd)QU  
int i2=mid+1; @ gWd  
for(int cur=l;cur<=r;cur++){ -m%`Di!E  
if(i1==mid+1) ` z0q:ME  
data[cur]=temp[i2++]; f(Of+>   
else if(i2>r) ' 1gfXC  
data[cur]=temp[i1++]; N8dxgh!,  
else if(temp[i1] data[cur]=temp[i1++]; ?l^Xauk4Pj  
else Pp tuXq%U  
data[cur]=temp[i2++]; Jq'8"  
} _o$jk8jOjW  
} nOL"6%q  
mnsl$H_4S  
} XAU%B-l:  
I1U2wD  
改进后的归并排序: ?Z7QD8N  
$0E+8xE  
package org.rut.util.algorithm.support; }Pg}"fb^  
m"iA#3l*=  
import org.rut.util.algorithm.SortUtil; nm,LKS7  
F^NK"<tW  
/** <]M. K3>  
* @author treeroot $z jdCg<  
* @since 2006-2-2 5?^L))  
* @version 1.0 x1.S+:  
*/ :]m.&r S,  
public class ImprovedMergeSort implements SortUtil.Sort { + '_t)k^  
LnI  
private static final int THRESHOLD = 10; p2i?)+z  
+SH{`7r  
/* d}h{#va*  
* (non-Javadoc) dWvVK("Wj  
* '|zrzU=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (O5Yd 6u  
*/ *{DTxEy  
public void sort(int[] data) { ZP<<cyY  
int[] temp=new int[data.length]; zl|z4j'Irc  
mergeSort(data,temp,0,data.length-1); yijP  
} ro{!X,_$,  
7#0buXBg  
private void mergeSort(int[] data, int[] temp, int l, int r) { sI!H=bp-8  
int i, j, k; &xQM!f  
int mid = (l + r) / 2; tbd=A]B-  
if (l == r) tTLg;YjN  
return; 0 5`"U#`:  
if ((mid - l) >= THRESHOLD) kO}&Oi,?  
mergeSort(data, temp, l, mid); xV)[C )6  
else bx8](cT_  
insertSort(data, l, mid - l + 1); 4VwF \  
if ((r - mid) > THRESHOLD) &vp KBR ^  
mergeSort(data, temp, mid + 1, r); \g39>;iR  
else USz~l7Xs  
insertSort(data, mid + 1, r - mid); rGyAzL]  
fORkH^Y(&  
for (i = l; i <= mid; i++) { K -U} sW  
temp = data; ,_Z(!| rW  
} /uwi$~Ed  
for (j = 1; j <= r - mid; j++) { >%j%Mj@8q|  
temp[r - j + 1] = data[j + mid]; XVYFyza;  
} @Nek;xJ  
int a = temp[l]; /*mF:40M;  
int b = temp[r]; hw^&{x  
for (i = l, j = r, k = l; k <= r; k++) { "<!U  
if (a < b) { aixX/se  
data[k] = temp[i++]; *9aJZWf>V  
a = temp; $v|W2k  
} else { o8bdL<  
data[k] = temp[j--]; ^}_Ka//k  
b = temp[j]; WTJ 0Q0U  
} hzqJ!  
} U#` e~d t<  
} mLX/xM/T?/  
 x]+PWk  
/** "jFf}"  
* @param data s<9g3Gh  
* @param l 6l]X{A.  
* @param i A9$x8x*Lt  
*/ o$rjGa l  
private void insertSort(int[] data, int start, int len) { |1U_5w  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ysW})#7X  
} >NRppPqL  
} ky2 bj}"p9  
} FlBhCZ|^  
} FE~D:)Xj'?  
Z7;V}[wie  
堆排序: _QPqF{iI  
zw/AZLS  
package org.rut.util.algorithm.support; zR"c j  
ZSC*{dD$E  
import org.rut.util.algorithm.SortUtil; cMw<3u\  
6>a6;[  
/** 9P?0D  
* @author treeroot $ Habhw  
* @since 2006-2-2 jx: IK  
* @version 1.0 q< JCgO-F<  
*/ $TI^8 3  
public class HeapSort implements SortUtil.Sort{ i+Z)`  
9L=mS  
/* (non-Javadoc) 7*!7EBb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 95l)s],  
*/ u\]EG{w(  
public void sort(int[] data) { uE-(^u  
MaxHeap h=new MaxHeap(); 4ax{Chn  
h.init(data); ~KBa-i%o  
for(int i=0;i h.remove(); kA:mB;:  
System.arraycopy(h.queue,1,data,0,data.length); v/+ <YU  
} Re$h6sh  
z5E%*]  
private static class MaxHeap{ (Rw<1q`,  
KGz Nj%  
void init(int[] data){ 1 /. BP  
this.queue=new int[data.length+1]; =&}@GsXdo  
for(int i=0;i queue[++size]=data; v"USD<   
fixUp(size); )9]a  
} ".?4`@7F\  
} XUqorE  
Eb8pM>'qM  
private int size=0; p5G'})x  
b6D;98p  
private int[] queue; |R`"Zu`  
M3(N!xT  
public int get() { fF@w:;u  
return queue[1]; ;qshd'?*  
} Bn}woyJdx  
\T7Mt|f:5  
public void remove() { (jT)o,IW&  
SortUtil.swap(queue,1,size--); Y6` xb`  
fixDown(1); 1EyN |m|  
} k# [!; <  
file://fixdown <LHhs <M'  
private void fixDown(int k) { tW\yt~q,  
int j; OW7  
while ((j = k << 1) <= size) {  YKyno?m  
if (j < size %26amp;%26amp; queue[j] j++; ;J%:DD  
if (queue[k]>queue[j]) file://不用交换 xye-Z\-t  
break; d>QFmsh-  
SortUtil.swap(queue,j,k); HBlk~eZ  
k = j; 50,'z?-_  
} !nvwRQ  
} 1- 2hh)  
private void fixUp(int k) { n(: <pz  
while (k > 1) { mUYRioNj  
int j = k >> 1; ZT0\V ]!B  
if (queue[j]>queue[k]) HI.*xkBXl&  
break; %Bs. XW,  
SortUtil.swap(queue,j,k); 2~4:rEPJ:  
k = j; AZj&;!}  
} }A)\bffH  
} 3BFOZV+  
VY?9|};f  
} 8q2a8I9g  
mQ"~x]  
} HW@wia  
@X==[gQ  
SortUtil: 8&<mg;H,  
jK|n^5\  
package org.rut.util.algorithm; J4Gzp~{  
*uvM6F$ut  
import org.rut.util.algorithm.support.BubbleSort; PL/g| ;  
import org.rut.util.algorithm.support.HeapSort; bi<<z-q`wJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; wlS/(:02  
import org.rut.util.algorithm.support.ImprovedQuickSort; {,>G 1>Yv  
import org.rut.util.algorithm.support.InsertSort; \DB-2*a"  
import org.rut.util.algorithm.support.MergeSort; C:QB=?%;  
import org.rut.util.algorithm.support.QuickSort; nm^HL|  
import org.rut.util.algorithm.support.SelectionSort; iRQ!J1SGcG  
import org.rut.util.algorithm.support.ShellSort; =sJ?]U  
R\j~X@vI  
/** M0V<Ay\%O  
* @author treeroot Y|Iq~Qy~  
* @since 2006-2-2 f ,F X# _4  
* @version 1.0 mZ)>^.N6  
*/ }EK{UM9y  
public class SortUtil { <,i4Ua  
public final static int INSERT = 1; RSX27fb4  
public final static int BUBBLE = 2; 9YzV48su#  
public final static int SELECTION = 3; #;[G>-tC  
public final static int SHELL = 4; [vg&E )V  
public final static int QUICK = 5; oC0ndp~+&  
public final static int IMPROVED_QUICK = 6; 56V|=MzX]  
public final static int MERGE = 7; ;mQj2Bwr  
public final static int IMPROVED_MERGE = 8; #]` uH{  
public final static int HEAP = 9; fBSa8D3}`  
 a"Qf  
public static void sort(int[] data) { @]3 \*&R}  
sort(data, IMPROVED_QUICK); Xw H>F7HPe  
} dC=[o\  
private static String[] name={ t7=D$ua  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \Kl20?  
}; S?~0)EXj(  
gx&es\  
private static Sort[] impl=new Sort[]{ y|`-)fY  
new InsertSort(), JEjxY&  
new BubbleSort(), \!u<)kkyT  
new SelectionSort(), Lqgrt]L_"  
new ShellSort(), -TUJ"ep]QJ  
new QuickSort(), !KHgHKEW^  
new ImprovedQuickSort(), uibmQ|AQ  
new MergeSort(), XKp&GE@Y  
new ImprovedMergeSort(), 8^7Oc,:~  
new HeapSort() ug3\K83aj/  
}; qng ~,m  
y`I>|5[ `  
public static String toString(int algorithm){ +%dXB&9x|Z  
return name[algorithm-1]; >0^<<=m  
} EX,>V,.UV  
EPm~@8@"j?  
public static void sort(int[] data, int algorithm) { : auR0FE  
impl[algorithm-1].sort(data); *`>BOl+ro  
} k^5Lv#Z  
J1w;m/oV  
public static interface Sort { /\mtCa.O  
public void sort(int[] data); jJ$\WUQ.  
} QiK>]xJ'  
qTsy'y;Z  
public static void swap(int[] data, int i, int j) { zdN[Uc+1Bd  
int temp = data; { I#>6  
data = data[j]; 65EMB%  
data[j] = temp; 0 QTI;3  
} YT(N][V  
} kx,.)qKk  
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