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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。 4[Oy3.-c  
插入排序: ,j5fzA  
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package org.rut.util.algorithm.support; hTg%T#m  
>@rp]xx  
import org.rut.util.algorithm.SortUtil; 56TUh_  
/** J+z0,N[  
* @author treeroot qPzgGbmD9  
* @since 2006-2-2 *B3` #t  
* @version 1.0 JNMZn/  
*/ 2OK%eVba  
public class InsertSort implements SortUtil.Sort{ t3bN P K^  
b,SY(Ce~g  
/* (non-Javadoc) )ZiJl5l@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {H0B"i  
*/ Cu/w><h)  
public void sort(int[] data) { u 4)i7  
int temp; #>>-:?X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =&}dP%3LC)  
} "I+wU`AIek  
} y YF80mnJz  
} ;PLby]=O  
-ud!j  
} x>Q#Bvy  
2+ 9">a@  
冒泡排序: *,Y+3yM  
F'`L~!F  
package org.rut.util.algorithm.support; d]a*)m&  
L0uN|?}  
import org.rut.util.algorithm.SortUtil; BJ{mX>I(  
N %0F[sY6  
/** 8G{} r  
* @author treeroot \W*ouH  
* @since 2006-2-2 (c[|k  
* @version 1.0 5?2PUE,a  
*/ \/lS!+~'']  
public class BubbleSort implements SortUtil.Sort{ X0 %k`3  
iL5+Uf)E3  
/* (non-Javadoc) seq S*^7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nk6xavQji  
*/ [QL)6Xr  
public void sort(int[] data) { 2;6p2GNSh  
int temp; SJ+.i u/  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'MsxZqW"~  
if(data[j] SortUtil.swap(data,j,j-1); 4pA(.<#A  
} \Dr@n^hk@[  
} Q*U$i#,  
} nDaQ1  
} ~W`upx)j  
bCE[oi6hb  
} !&19%C4  
`Jz"rh-M  
选择排序: 9~>;sjJk  
S W  
package org.rut.util.algorithm.support; 4$vya+mAk5  
L!/USh:IP  
import org.rut.util.algorithm.SortUtil; qW7S<ouh  
@gs Kb* ,  
/** -*tP_=-Dg  
* @author treeroot j7O7P+DmS  
* @since 2006-2-2 *S{%+1F  
* @version 1.0 RQ|!?\a=  
*/ mJ Wl#3  
public class SelectionSort implements SortUtil.Sort { z!t &zkAK  
##yi^;3Y  
/* #nn2odR  
* (non-Javadoc) |4 wVWJ7   
* e9N 1xB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O7q-MeMM  
*/ tS`fG;  
public void sort(int[] data) { xB 4A"|  
int temp; &.Yh_  
for (int i = 0; i < data.length; i++) { ywCE2N<-V?  
int lowIndex = i; %:((S]vAi  
for (int j = data.length - 1; j > i; j--) { qb "H&)aHw  
if (data[j] < data[lowIndex]) { R+, tn,<<  
lowIndex = j; v#D9yttO{  
} SAXjB;VH6  
} 6P+8{ ?V&  
SortUtil.swap(data,i,lowIndex); ,uuQj]Dac+  
} 0UlaB sv  
} [)9bR1wh  
Dth<hS,2J  
} ^=Up U B  
7uxy<#Ar  
Shell排序: l=bB,7gL  
J;'?(xO3\  
package org.rut.util.algorithm.support; sx(yG9  
%VSST?aUvX  
import org.rut.util.algorithm.SortUtil; !]5F2~"v  
g4%x7#vz0  
/** 3P'.)=}  
* @author treeroot jskATA /  
* @since 2006-2-2 J%D'Xlb  
* @version 1.0 d) G7U$z~  
*/ 4$ejJaE  
public class ShellSort implements SortUtil.Sort{ "hpK8vQ  
tse(iX/D  
/* (non-Javadoc) aI+:rk^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fi(_A  
*/ rN} {v}n  
public void sort(int[] data) { +B c/@.Q'  
for(int i=data.length/2;i>2;i/=2){ =s1"<hH}O)  
for(int j=0;j insertSort(data,j,i); $5cLhi"`  
} }q27M  
} 0>Ecm#  
insertSort(data,0,1); <;SMczR  
} Alh%Z\  
3vmLftZE}  
/** ;c<:"ad(  
* @param data JTl 37j  
* @param j ,Ea.ts>  
* @param i 0qZ{:}`3  
*/ t'0r4&\  
private void insertSort(int[] data, int start, int inc) { U}7$:hO"dX  
int temp; ma?569Z8~0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I+8m1 *  
} QTK \"  
} >RE&>T^8  
} <k}>eGn  
D OPOzh  
} kw|bEL9!u  
<hQ@]2w$  
快速排序: \L6U}ZQ2V  
(/Z~0hA[Q  
package org.rut.util.algorithm.support; @T]gw J  
T(7 8{A>  
import org.rut.util.algorithm.SortUtil; o<@2zhuhrx  
6+m)   
/** %|oY8;0|A>  
* @author treeroot )^g}'V=vIr  
* @since 2006-2-2 K'N\"Y?>  
* @version 1.0 Yy>%dL  
*/ JL2IVENWc  
public class QuickSort implements SortUtil.Sort{ @5Ril9J[b  
+;U}SR<  
/* (non-Javadoc) pShSK Rg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W"VN2  
*/ r/:s2 oQ  
public void sort(int[] data) { [$9sr=3:  
quickSort(data,0,data.length-1); ,LWM}L  
} QRw3 06  
private void quickSort(int[] data,int i,int j){ E9%xSMS8@  
int pivotIndex=(i+j)/2; {Am\%v\  
file://swap "op1xto  
SortUtil.swap(data,pivotIndex,j); kH1l -mxz  
,N <;!6e  
int k=partition(data,i-1,j,data[j]); ~$!eB/6ty  
SortUtil.swap(data,k,j); !);}zW!  
if((k-i)>1) quickSort(data,i,k-1); &g.w~KWa  
if((j-k)>1) quickSort(data,k+1,j); t<}'/ )  
^=E4~22q  
} Nki18ud#  
/** X1#D}  
* @param data :14O=C  
* @param i  U7tT  
* @param j w&`gx6?-na  
* @return q;tsA"l  
*/ /2Y Nu*v  
private int partition(int[] data, int l, int r,int pivot) { 1S0Hc5vw  
do{ J0mY=vX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w0^(jMQe^  
SortUtil.swap(data,l,r); *G>V`||RW  
} qV9`  
while(l SortUtil.swap(data,l,r); `S{< $:D  
return l; burEo.=  
} q,$UKg#i  
.'5yFBS  
} 2~Gcoda  
^X"G~#v=q  
改进后的快速排序: dUOjPq97  
Q3wD6!'&m  
package org.rut.util.algorithm.support; S)@R4{=e"V  
JS}W4 N  
import org.rut.util.algorithm.SortUtil; \QHe0?6  
0 6 K8|K  
/** 7+#^:;19`  
* @author treeroot </:f-J%U/  
* @since 2006-2-2 RyIr_:&-~  
* @version 1.0 PIB|&I|p  
*/ N;Hrc6nin^  
public class ImprovedQuickSort implements SortUtil.Sort { @ g~kp  
b (;"p-^  
private static int MAX_STACK_SIZE=4096; L>xcgV7  
private static int THRESHOLD=10; VGWqy4m  
/* (non-Javadoc) ,'={/)c<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~;wSe[  
*/ +=$]fjE?  
public void sort(int[] data) { >^D"%Oj y  
int[] stack=new int[MAX_STACK_SIZE]; n_.2B$JD  
dZ`nv[]k~  
int top=-1; u2JkPh&!rq  
int pivot; X[h=UlF  
int pivotIndex,l,r; h8u(lIRHQ  
tvf"w`H  
stack[++top]=0; yY[[)  
stack[++top]=data.length-1; nH NMoA  
Ny\iRU)fN  
while(top>0){  ItC*[  
int j=stack[top--]; 57v[b-SK  
int i=stack[top--]; <4C`^p  
(}gF{@sn  
pivotIndex=(i+j)/2; @T?:[nPf&F  
pivot=data[pivotIndex]; R 4E0avt  
.<rL2`C[c  
SortUtil.swap(data,pivotIndex,j); ;# {XNq<1  
[WY NA-O  
file://partition _ nS';48  
l=i-1; L4 x  
r=j; jEit^5^5|  
do{ \eI )(,A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f*2V  
SortUtil.swap(data,l,r); |cWW5\/  
} B/i,QBPF]  
while(l SortUtil.swap(data,l,r); Q(oWaG  
SortUtil.swap(data,l,j); [-s0'z  
rTDx|pvYx  
if((l-i)>THRESHOLD){ &zb_8y,  
stack[++top]=i; kxTh tjgv  
stack[++top]=l-1; wf6ZzG:  
} @>(l}5U5  
if((j-l)>THRESHOLD){ 1S  0GjR  
stack[++top]=l+1; ,;GW n  
stack[++top]=j; @DU]XKv  
} Uc<B)7{'  
^p|@{4f]  
} P ,xayy  
file://new InsertSort().sort(data); h"#^0$f  
insertSort(data); 0Q]x[;!k  
} - Kj$A@~x  
/** kS/Zb3  
* @param data ULjW589 zb  
*/ xfos>|0N  
private void insertSort(int[] data) { VskyRxfdW3  
int temp; pc^(@eD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rj^bZ%t  
} ,yAvLY5 P  
} Ga N4In[d  
} rQj.W6w=  
lv&<kYWY  
}  vRn^n  
|+cyb<(V J  
归并排序:  6.KR(V  
\hv*`ukF  
package org.rut.util.algorithm.support; #u|;YC  
i. `S0  
import org.rut.util.algorithm.SortUtil; N@?Fpmu/k  
`"A\8)6-  
/** ]Ny.  gu  
* @author treeroot DWm$:M4 z  
* @since 2006-2-2 /_ o1b_1 U  
* @version 1.0 Z^>3}\_v  
*/ wH{lp/  
public class MergeSort implements SortUtil.Sort{ c6E@+xU  
JgYaA*1X  
/* (non-Javadoc) <y-KW WE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G)5%f\&  
*/ k+JDbJ@  
public void sort(int[] data) { !Lk|eGd*  
int[] temp=new int[data.length]; DE."XSni  
mergeSort(data,temp,0,data.length-1); M!!W>A@T[g  
} e u^z&R!um  
l'B`f)  
private void mergeSort(int[] data,int[] temp,int l,int r){ QmT]~4PqS  
int mid=(l+r)/2; 5<,}^4wWZ  
if(l==r) return ; %$!}MxUM  
mergeSort(data,temp,l,mid); ?G0=\U< o,  
mergeSort(data,temp,mid+1,r); 1UyI.U]  
for(int i=l;i<=r;i++){ A;Xn#t ,(K  
temp=data;  p&:R SO  
} + :iNoDz  
int i1=l; :HMnU37m W  
int i2=mid+1; A5!f#  
for(int cur=l;cur<=r;cur++){ t}_qtO7>  
if(i1==mid+1) [KVBT;q6  
data[cur]=temp[i2++]; i7cMe8  
else if(i2>r) RUYw D tC  
data[cur]=temp[i1++]; .OX.z~":y  
else if(temp[i1] data[cur]=temp[i1++]; B~caHG1b  
else |DwI%%0(F  
data[cur]=temp[i2++]; oBifESJ  
} NU I|4X  
} [=S@lURzm@  
^3*/x%A,g  
} |a3)U%rUEQ  
vZhN% DfY  
改进后的归并排序: nFX8:fZ$>  
\iSaxwU_  
package org.rut.util.algorithm.support; ]\ sBl  
h&NcN-["  
import org.rut.util.algorithm.SortUtil; `fY~Lv{4d_  
psgXJe$  
/** 6@ ToPbj4  
* @author treeroot 1i$9x$4~E  
* @since 2006-2-2 na(@`(j[  
* @version 1.0 bn~=d@'  
*/ v&xk?F?WU,  
public class ImprovedMergeSort implements SortUtil.Sort { X<#Q~"  
z<sf}6q  
private static final int THRESHOLD = 10; 2Z\6xb|u  
aOyAP-m,  
/* -81usu&NH  
* (non-Javadoc) O292JA  
* V78QV3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O}Fp\"  
*/ &r/a\t,8n  
public void sort(int[] data) { a^,6[  
int[] temp=new int[data.length]; m9wV#Ldu  
mergeSort(data,temp,0,data.length-1); mI@E>VCV[  
} st+X~;PX*  
Gv?'R0s  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2oGl"3/p  
int i, j, k; _F;(#D  
int mid = (l + r) / 2; &owBmpz  
if (l == r) _udH(NC  
return; !3kyPoq+  
if ((mid - l) >= THRESHOLD) fS w00F{T  
mergeSort(data, temp, l, mid); Q<;f-9q @  
else f+Put  
insertSort(data, l, mid - l + 1); Y \& 4`v'  
if ((r - mid) > THRESHOLD) Uj(,6K8W  
mergeSort(data, temp, mid + 1, r); R`:Y&)c_$  
else ]uWx<aD B  
insertSort(data, mid + 1, r - mid); #J\ 2/~  
++5W_Ooep  
for (i = l; i <= mid; i++) { %a{cJ6P  
temp = data; *G.6\  
} }ytc oIuLf  
for (j = 1; j <= r - mid; j++) { m!$"-nh9  
temp[r - j + 1] = data[j + mid]; ]9l=geZd%;  
} c03A_2%  
int a = temp[l]; 4 "@BbVYR  
int b = temp[r]; .%M=dL>  
for (i = l, j = r, k = l; k <= r; k++) { %)i?\(/  
if (a < b) { p*-o33Ve  
data[k] = temp[i++]; T,TKt%  
a = temp; 8N'`kd~6[  
} else { q/6d^&  
data[k] = temp[j--]; hE/gul?|_  
b = temp[j]; >(<OhS(  
} B&0-~o3WP  
} =L 7scv%i  
} |GA4fFE=  
gX{V>T(<  
/** ]$EKowi  
* @param data 15)=>=1mR.  
* @param l c_yf=   
* @param i :05>~bn>pC  
*/ k10dkBoEX  
private void insertSort(int[] data, int start, int len) { B=(m;A#G  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lw\OsB$  
} ;E,%\<  
} H/|Mq#K  
} ${8 1~  
} QDzFl1\P  
$f7#p4;}(  
堆排序: w5b D  
lo,?mj%M  
package org.rut.util.algorithm.support; Q6`oo/  
^; Nu\c  
import org.rut.util.algorithm.SortUtil; QNLkj`PL/  
vh"zYl`  
/** >Yl?i&3n  
* @author treeroot '%. lY9D  
* @since 2006-2-2 u%Hegqn  
* @version 1.0 6w0/;8(_m  
*/ HH&`f3  
public class HeapSort implements SortUtil.Sort{ $Dxz21|P7  
h:Q*T*py  
/* (non-Javadoc) 1Yo9Wf;vP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c]P`U(q9TV  
*/ p,* rVz[Y  
public void sort(int[] data) { xm6=l".%z  
MaxHeap h=new MaxHeap(); |dsd5Vdr  
h.init(data); 5sao+dZ"|  
for(int i=0;i h.remove(); m;>HUTj  
System.arraycopy(h.queue,1,data,0,data.length); N32!*TsWs  
} ?i>.<IPOq  
)|~pocXt<  
private static class MaxHeap{ ~]*P/'-{#  
j,K]T J  
void init(int[] data){ u%Bk"noCa  
this.queue=new int[data.length+1]; *T$`5|  
for(int i=0;i queue[++size]=data; * 8CI'UX  
fixUp(size); G +o)s  
} <Qe30_<K  
} u.ffZ]\7l  
X|{TwmHd  
private int size=0; uCB7(<  
s(w6Ldi  
private int[] queue; vj]-p=  
1mz;4xb  
public int get() { VC:.ya|Z  
return queue[1]; u7=`u/  
} QeuIAs*_  
w^s|YF=c  
public void remove() { _n,Ye&m  
SortUtil.swap(queue,1,size--); gI~R u8  
fixDown(1); (|(#~o]40t  
} _Jn-#du  
file://fixdown T\eOrWt/  
private void fixDown(int k) { >V2Tr$m j  
int j; +/'3=!oyd  
while ((j = k << 1) <= size) { U iqHUrx  
if (j < size %26amp;%26amp; queue[j] j++; oyZ}JTl( Q  
if (queue[k]>queue[j]) file://不用交换 OGw =e{  
break; IP~*_R"bM  
SortUtil.swap(queue,j,k); ]x8 ^s  
k = j; AifnC4  
} I'{-T=R-q  
} \Bg;}\8 X  
private void fixUp(int k) { cs `T7?>  
while (k > 1) { NRe{0U}nO  
int j = k >> 1; )mT{w9u  
if (queue[j]>queue[k]) eGwrSF#a)  
break; v) mO"\  
SortUtil.swap(queue,j,k); ~4S@kYe{3K  
k = j; v_3r8My-  
} GD<xmuo  
} &k*sxW'  
wWB-P6  
} yANk(  
~W p>tnl  
} ;N6Euiz  
 i1v0J->  
SortUtil: Nb~.6bsL  
oswS<t{Z  
package org.rut.util.algorithm; E96FwA5  
JE9SPFQx9M  
import org.rut.util.algorithm.support.BubbleSort; {hr>m,O%  
import org.rut.util.algorithm.support.HeapSort; 5TqB&GP0  
import org.rut.util.algorithm.support.ImprovedMergeSort; :QT0[P5O  
import org.rut.util.algorithm.support.ImprovedQuickSort; H,bYzWsrPo  
import org.rut.util.algorithm.support.InsertSort; } QVREj  
import org.rut.util.algorithm.support.MergeSort; G9J+D?'hH  
import org.rut.util.algorithm.support.QuickSort; Sz|;wsF{  
import org.rut.util.algorithm.support.SelectionSort; P~/Gla k  
import org.rut.util.algorithm.support.ShellSort; MA0 }BJoW  
o,dO.isgh>  
/** Bj5_=oo+d  
* @author treeroot Y -%g5  
* @since 2006-2-2 V +j58Wuf  
* @version 1.0 s{\USD6  
*/ lArYlR }  
public class SortUtil { FGY4u4y  
public final static int INSERT = 1; = s^KZV  
public final static int BUBBLE = 2; [+<lm 5t  
public final static int SELECTION = 3; f mu `o-  
public final static int SHELL = 4; FMMQO,BU  
public final static int QUICK = 5; .G8+D%%.  
public final static int IMPROVED_QUICK = 6; ANh7`AUuO  
public final static int MERGE = 7; wPdp!h7B~N  
public final static int IMPROVED_MERGE = 8; I/:M~ b  
public final static int HEAP = 9;  0IO#h{t  
OP>rEUtj  
public static void sort(int[] data) { Gxx:<`[ON  
sort(data, IMPROVED_QUICK); ^GMM%   
} `IL''eJug_  
private static String[] name={ \@8j&],dl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8D7 = ]  
}; ',`GdfAsH  
I,J*\)-%J  
private static Sort[] impl=new Sort[]{ X/Umfci  
new InsertSort(), l'TM^B)`c  
new BubbleSort(), <d!_.f}v  
new SelectionSort(), qXC>D Gy  
new ShellSort(), Dg(882#_  
new QuickSort(), =w&JDj  
new ImprovedQuickSort(), J;"66ue(d  
new MergeSort(), aF2vw{wT}  
new ImprovedMergeSort(), Tv2d?y  
new HeapSort() &cy @Be}|T  
}; 0RmQfD>  
t:|knZq  
public static String toString(int algorithm){ 8Ac5K!  
return name[algorithm-1]; uXD?s3Wv  
} X;`XkOjk  
7L68voC@U  
public static void sort(int[] data, int algorithm) { rik-C7  
impl[algorithm-1].sort(data);  zE$KU$  
} VE3,k'^v  
:rr;9nMR[  
public static interface Sort { )"SP >2}  
public void sort(int[] data); _4H 9rPhf  
} Reci:T(_  
a?&{eMEe}  
public static void swap(int[] data, int i, int j) { rq=D[vX\N(  
int temp = data; ?U3X,uv5J  
data = data[j]; ["]r=l  
data[j] = temp; rm}OVL  
} Wc] L43u  
} lxsBXXZg  
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