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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。 1}+lL)-!  
插入排序: $"&0  
k(1]!c4J0  
package org.rut.util.algorithm.support; kBolDPvBG  
8 CKN^8E  
import org.rut.util.algorithm.SortUtil; )X-b|D4O  
/** lc1?Vd$  
* @author treeroot :*|%g  
* @since 2006-2-2 tDj~+lmdN  
* @version 1.0  fp!Ba  
*/ Ny|2Fcs  
public class InsertSort implements SortUtil.Sort{ cU <T;1VQ  
]q@/:I9]  
/* (non-Javadoc) &K2J$(.t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `s HrC  
*/ RbB y8ZVM  
public void sort(int[] data) { dqwCyYC  
int temp; "e]1|~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !Ra.DSL  
} P5 GM s  
} H9'Y` -r  
} 3LXS}~&  
5J!ncLNm{  
} 9W{`$30  
F-i`GMWC  
冒泡排序:  c(Liwuj  
q{D_p[q  
package org.rut.util.algorithm.support; t(3<w)r2  
,<iJ#$: Sx  
import org.rut.util.algorithm.SortUtil; & h)G>Sqc  
5!WQ  
/** x3ds{Z$,>(  
* @author treeroot 1=LI))nV  
* @since 2006-2-2 [k~V77w 14  
* @version 1.0 >KF1]/y<  
*/ Z^t"!oY  
public class BubbleSort implements SortUtil.Sort{ T\;7'  
m1,?rqeb  
/* (non-Javadoc) PF$K> d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O'tVZ!C#J  
*/ 9+'QH  
public void sort(int[] data) { zY?GO"U"  
int temp; J:s^F n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >uMj}<g#Z?  
if(data[j] SortUtil.swap(data,j,j-1); K_\fO|<k  
} *>otz5]  
} z [xi  
} Gb)!]:8  
} K9JW&5Q  
c\2+f7o@  
} N>, `l  
#$!(8>YJ  
选择排序: Y\e,#y  
fiDwa ;,  
package org.rut.util.algorithm.support; rn1^6qy)  
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import org.rut.util.algorithm.SortUtil; R"Ol'y{  
r;3{%S._  
/** EL_rh TWw  
* @author treeroot qU!*QZ^y&  
* @since 2006-2-2 T /iKz  
* @version 1.0 :Ny.OA  
*/ S}=d74(/n  
public class SelectionSort implements SortUtil.Sort { DDdMWH^o7  
o *5<Cxg  
/* ~*-(_<FH  
* (non-Javadoc) 8K qrB!  
* Z i-)PK^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $JKR,   
*/ Q;p?.GI?-  
public void sort(int[] data) { ?L=@Zs  
int temp; f.?p"~!  
for (int i = 0; i < data.length; i++) { }?f%cRT$  
int lowIndex = i; 0fgt2gA33  
for (int j = data.length - 1; j > i; j--) { \x JGR!  
if (data[j] < data[lowIndex]) { sSVgDQ~q  
lowIndex = j; :r0?[#r?N,  
} Q+e|;Mj  
} W5a)`%H  
SortUtil.swap(data,i,lowIndex); "#uXpCuw  
} |Sg FHuA  
} sFNBrL  
)4oTA@wR  
} S{cy|QD  
x!CCSM;q  
Shell排序: /15e-(Zz/  
m`(5B  
package org.rut.util.algorithm.support; r+8%oWj  
'gYUyl  
import org.rut.util.algorithm.SortUtil; K07b#`NF6  
;m/%g{oV  
/** YGVj$\  
* @author treeroot l4c9.'6  
* @since 2006-2-2 =]r<xON%S  
* @version 1.0 qaK9E@l  
*/ TxZ ^zj  
public class ShellSort implements SortUtil.Sort{ gC-3ghmgS  
Wi3:;`>G<p  
/* (non-Javadoc) H f}->  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `9;:mR $  
*/ s{v!jZ  
public void sort(int[] data) { c]]OV7;)>  
for(int i=data.length/2;i>2;i/=2){ 9Xw(|22  
for(int j=0;j insertSort(data,j,i); W7 9wz\a  
} `]L&2RS  
} __Kn 1H{  
insertSort(data,0,1); 5c?1JH62o8  
} Bny3j~*U  
n_[;2XQQ  
/** U_ j\UQC  
* @param data Kj| l]'  
* @param j *n $=2v^A  
* @param i > sW9n[  
*/ }E626d}uA  
private void insertSort(int[] data, int start, int inc) { ;eYm+e^?.  
int temp; aw z(W >  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "F nH>g-  
} =<ngtN  
} msKWb311u  
} ,tt]C~\u  
:q_(=EA  
} eH.~c3o  
9sQ7wlK  
快速排序: {DzOXTI[Y  
BeAkG_uG  
package org.rut.util.algorithm.support; y7ng/vqM7  
ZzZy2.7  
import org.rut.util.algorithm.SortUtil; yu ~Rk  
dtHB@\1  
/**  4[=vt  
* @author treeroot e nsou!l  
* @since 2006-2-2 ,,_$r7H`  
* @version 1.0 r+6=b"  
*/ B%P g:|  
public class QuickSort implements SortUtil.Sort{ I<p- o/TP  
Z(F`M;1>xI  
/* (non-Javadoc) JHN{vB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XcfvmlBoD-  
*/ 8G&'ED_&  
public void sort(int[] data) { 7[=MgnmuC  
quickSort(data,0,data.length-1); jQDXl  
} .xnJT2uu'  
private void quickSort(int[] data,int i,int j){ ]3B8D<p  
int pivotIndex=(i+j)/2; L\1&$|?  
file://swap u-yVc*<,  
SortUtil.swap(data,pivotIndex,j); R(jp  
b^WTX  
int k=partition(data,i-1,j,data[j]); Bf {h\>q  
SortUtil.swap(data,k,j); q~QB?+ x&  
if((k-i)>1) quickSort(data,i,k-1); xaQO=[  
if((j-k)>1) quickSort(data,k+1,j); 0E[&:6#Y  
3aL8GMiu  
} 8|FHr,  
/** /CR Z  
* @param data QrmiQ]d*p  
* @param i =Kf]ZKj)  
* @param j vumA W*  
* @return #9Src\V  
*/ o Ho@rGU  
private int partition(int[] data, int l, int r,int pivot) { 9|y?jb5im  
do{ pP JhF8Dt  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h+,Eu7\88  
SortUtil.swap(data,l,r); %kB84dE  
} }@R*U0*E  
while(l SortUtil.swap(data,l,r); .d}7c!  
return l; jIpc^iu`,  
} ei TG  
$^[^ ]Q  
} J0{;"  
QLr.5Wcg>  
改进后的快速排序: AXK6AZjX  
F#<$yUf%  
package org.rut.util.algorithm.support; 14U:.Q  
P*9vs%W  
import org.rut.util.algorithm.SortUtil; Jat|n97$  
'Ipp1a Z_M  
/** UBj"m<  
* @author treeroot ^5{M@o  
* @since 2006-2-2 =t,}I\_^c  
* @version 1.0 C"X; ,F<  
*/ Cp[{| U-?G  
public class ImprovedQuickSort implements SortUtil.Sort { JerueF;J  
/j}"4_. 8  
private static int MAX_STACK_SIZE=4096; >ZX&2 {  
private static int THRESHOLD=10; _ML`Vh]  
/* (non-Javadoc) @Kl'0>U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uH"W07  
*/ YfB8  
public void sort(int[] data) { QC/%|M0 {  
int[] stack=new int[MAX_STACK_SIZE]; > St]MS  
\piHdVD  
int top=-1; )HaW# ,XB  
int pivot; ]Ak/:pu  
int pivotIndex,l,r; Zt3Y<3o  
}iOFB&)w  
stack[++top]=0; 3rRN~$  
stack[++top]=data.length-1; +;@p'af!9  
1$A7BP  
while(top>0){ 5;:P^[cH9  
int j=stack[top--]; eyUhM jd  
int i=stack[top--]; P&3Z,f0  
T~&9/%$F  
pivotIndex=(i+j)/2; AEUXdMo  
pivot=data[pivotIndex]; OE{PP9 eh  
;|a,1#x  
SortUtil.swap(data,pivotIndex,j); fWutB5?P  
#.Q8q  
file://partition /*$B  
l=i-1; N^Bjw?3  
r=j; [pAW':  
do{  ,m"0Bu2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qFV }Y0w  
SortUtil.swap(data,l,r); `XmT)C  
} PPj_NV  
while(l SortUtil.swap(data,l,r); 295U<  
SortUtil.swap(data,l,j); u)NmjW  
:h(r2?=7  
if((l-i)>THRESHOLD){  xRTr@  
stack[++top]=i; Y1=.46Ezf  
stack[++top]=l-1; j B.ZF7q  
} n#\ t_/\  
if((j-l)>THRESHOLD){ N51g<K  
stack[++top]=l+1; xoT|fgb  
stack[++top]=j; e7# B?  
} [H-r0Ah  
1I^uq>r  
} bOvMXj/HV=  
file://new InsertSort().sort(data); @U)k~z2Hk  
insertSort(data); jE.yT(+lW  
} q>n0'`q   
/** v +$3Z5  
* @param data :<"b"{X"  
*/ *'BA# /@  
private void insertSort(int[] data) { \H6[6*JuB  
int temp; CLn}BxgD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K0YUN^St  
} @0v%5@  
} 4fuK pLA  
} 7UVhyrl  
#<4/ *< 5  
} GM{J3O=  
FxK2 1  
归并排序: D on8xk  
>sfH[b  
package org.rut.util.algorithm.support; zfexaf!  
AhNy+p{  
import org.rut.util.algorithm.SortUtil; M~o\K'  
KeIk9T13O  
/** )|Il@unp/  
* @author treeroot 8Ev,9  
* @since 2006-2-2 [Y%H8}  
* @version 1.0 &OXnZT3P  
*/ )9PP3"I  
public class MergeSort implements SortUtil.Sort{ N.l\2S}  
5VLJ:I?0O  
/* (non-Javadoc) <}vult^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #("/ 1N6  
*/ l&2}/A  
public void sort(int[] data) {  n}f*>Mn  
int[] temp=new int[data.length]; mqIcc'6f  
mergeSort(data,temp,0,data.length-1); q ad`muAd  
} ruf*-&Kr7  
uFXu9f+  
private void mergeSort(int[] data,int[] temp,int l,int r){ Gl@-RLo  
int mid=(l+r)/2; /-mo8]J#2~  
if(l==r) return ; E+tV7xa~  
mergeSort(data,temp,l,mid); `g~T #U\>d  
mergeSort(data,temp,mid+1,r); S,'y L7s  
for(int i=l;i<=r;i++){ =Y-ZI  
temp=data; faqh }4  
} (:TZ~"VY  
int i1=l; QnJ(C]cW  
int i2=mid+1; piy_9nk  
for(int cur=l;cur<=r;cur++){ ;FI"N@z  
if(i1==mid+1) +OTNn@!9  
data[cur]=temp[i2++]; #xlT,:_:)  
else if(i2>r) en1NFP  
data[cur]=temp[i1++]; n}T;q1  
else if(temp[i1] data[cur]=temp[i1++]; =Eimbk  
else <-3_tu>l  
data[cur]=temp[i2++]; Z~WUILx,  
} > ]()#z  
} EAE\'9T&g  
REaU=-m-  
} ~\ C.Nm  
Js'#=  
改进后的归并排序: g6wL\g{29  
4|EV`t}EV  
package org.rut.util.algorithm.support; e ; #"t  
)q>mt/,  
import org.rut.util.algorithm.SortUtil; fz hCV  
ZB|y  
/** F(5(cr 7K  
* @author treeroot TSPFi0PP  
* @since 2006-2-2 lZI?k=rWv  
* @version 1.0 VEtdp*ot  
*/ MD 62ObK!  
public class ImprovedMergeSort implements SortUtil.Sort { = ;!$Qw4  
jJ B+UF=  
private static final int THRESHOLD = 10; = MP?aH [  
;%/Kh :Vg  
/* b;AGw3SF  
* (non-Javadoc) w:0=L`<Eu  
* jIOrB}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x U1](O  
*/ ux 7^PTgcO  
public void sort(int[] data) { Te:4 z@?  
int[] temp=new int[data.length]; L]_1z  
mergeSort(data,temp,0,data.length-1); 1lf 5xm.  
} 10C,\  
\]a@ NBv  
private void mergeSort(int[] data, int[] temp, int l, int r) { bV~z}V&  
int i, j, k; MeSF,*lP  
int mid = (l + r) / 2; %xH2jf  
if (l == r) =HGC<#  
return; js~?y|e8k  
if ((mid - l) >= THRESHOLD) 7H~J?_  
mergeSort(data, temp, l, mid); ap7ZT7KW  
else a'U}.w}  
insertSort(data, l, mid - l + 1); T/b%,!N)  
if ((r - mid) > THRESHOLD) x_yQoae  
mergeSort(data, temp, mid + 1, r); $^ wqoW%t  
else "G+g(?N]j  
insertSort(data, mid + 1, r - mid); wVw?UN*rm;  
\TF='@u.  
for (i = l; i <= mid; i++) { ;#goC N.  
temp = data; aJmSagr69C  
} >;9+4C<z0  
for (j = 1; j <= r - mid; j++) { YV p sf8R  
temp[r - j + 1] = data[j + mid]; ! qF U  
} ]3%( '8/  
int a = temp[l]; `wzb}"gLsM  
int b = temp[r]; x'c%w:  
for (i = l, j = r, k = l; k <= r; k++) { 2A5R3x= \  
if (a < b) { |IL/F]I  
data[k] = temp[i++]; { !;I4W%!  
a = temp; AxbQN.E  
} else { h:J0d~u  
data[k] = temp[j--]; h yPVt6Gkj  
b = temp[j]; v*pN~}5  
} &ml7368@  
} +Ui @3Q  
} fC\Cx;q-  
\N[Z58R !z  
/** N"+o=nS  
* @param data tcm?qro)  
* @param l $0f(Gc|  
* @param i M`~UH\  
*/ g<@P_^vo  
private void insertSort(int[] data, int start, int len) { sFvu@Wm'7W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); feI%QnK)U  
} ,?OWwm&J  
} O :'ENoQ:&  
} gHB*u!w7Z  
} ^ |xSU_wa  
}r+(Z.BHM  
堆排序: 7jZE(|G-  
mn>$K"_k  
package org.rut.util.algorithm.support; ~g6`Cp`  
!b=jD;<  
import org.rut.util.algorithm.SortUtil; ~o+:M0)}  
jgz}  
/** Zs$Qo->F  
* @author treeroot x+=Ko  
* @since 2006-2-2 \E!a=cL!  
* @version 1.0 #jc+2F,+{  
*/ qt.G_fOz  
public class HeapSort implements SortUtil.Sort{ NQFMExg,  
n.323tNY  
/* (non-Javadoc) " 0:&x n8L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;aY.CgX  
*/ MPtn$@  
public void sort(int[] data) { doERBg`Jh  
MaxHeap h=new MaxHeap(); MHm=X8eg  
h.init(data); x$6` k  
for(int i=0;i h.remove(); ~$bkWb*RJ  
System.arraycopy(h.queue,1,data,0,data.length); 0# )I :5  
} r}9a3 1i  
/CE]7m,7~K  
private static class MaxHeap{ vq.~8c1  
;?*`WB  
void init(int[] data){ =Fd!wkB'{  
this.queue=new int[data.length+1]; GW29Rj1  
for(int i=0;i queue[++size]=data; 06Irx^n  
fixUp(size); "L(4 EcO@  
} /F(wb_!  
} JFJ_ PphvD  
z`?{5v -Qs  
private int size=0; n)n>|w_  
~"Kf+eFi  
private int[] queue; #lf3$Tm D  
w6PKr^  
public int get() { J#```cB  
return queue[1]; 5)T=^"IHXi  
} \L-K}U>J  
&V$qIvN$  
public void remove() { o/;kzi  
SortUtil.swap(queue,1,size--); w`N|e0G@  
fixDown(1); BotGPk><c  
} ~=!d>f~U  
file://fixdown N`G* h^YQ  
private void fixDown(int k) { }%&hxhR^t3  
int j; 5yh:P3 /  
while ((j = k << 1) <= size) { zE~{}\J  
if (j < size %26amp;%26amp; queue[j] j++; XMR$I&;G8  
if (queue[k]>queue[j]) file://不用交换 w;=fi}<G|e  
break; ;T9u$4 <  
SortUtil.swap(queue,j,k); tR! !Q  
k = j; uA'S8b%C  
} :Z}d#Rbl  
} ]d}h`!:  
private void fixUp(int k) { $s*nh>@7  
while (k > 1) { $,/;QP}  
int j = k >> 1; DaA9fJ7a   
if (queue[j]>queue[k]) d~G, *  
break; D.Q9fa&P  
SortUtil.swap(queue,j,k); !vaS fL*]  
k = j; p}b:(QN~m  
} c Nhy.Z~D  
} 4P>[]~S  
GH6HdZ  
} 4;rt|X77  
JTw< 4]  
} vM.Y/,7S  
_7)>/YK?}4  
SortUtil: B"07:sO  
8|Q=9mmWOh  
package org.rut.util.algorithm; j56#KNAha  
:c*_W /  
import org.rut.util.algorithm.support.BubbleSort; _F2 R x@Y  
import org.rut.util.algorithm.support.HeapSort; g!#M0  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4*)a3jI?  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^ B>BA  
import org.rut.util.algorithm.support.InsertSort; 4TP AD)C  
import org.rut.util.algorithm.support.MergeSort; d){o#@  
import org.rut.util.algorithm.support.QuickSort; YqJ `eLu  
import org.rut.util.algorithm.support.SelectionSort; Gr&)5hm$  
import org.rut.util.algorithm.support.ShellSort; D?)^{)49  
/K@_O\+;Q  
/** q& :UP  
* @author treeroot y1oQ4|KSI  
* @since 2006-2-2 ^`HP&V  
* @version 1.0 2"'<Yk9  
*/ "vH>xBR[%  
public class SortUtil { tK|jh  
public final static int INSERT = 1; pX\Y:hCug  
public final static int BUBBLE = 2; *_qW;l7  
public final static int SELECTION = 3; E#0_y4  
public final static int SHELL = 4; >Q`\|m}x)Q  
public final static int QUICK = 5; )jS9p~FS  
public final static int IMPROVED_QUICK = 6; hk +@ngh%  
public final static int MERGE = 7; ]c Or$O*  
public final static int IMPROVED_MERGE = 8; b3zxiq x  
public final static int HEAP = 9; V5.=08L  
2;v1YKY  
public static void sort(int[] data) { cC NyW2'  
sort(data, IMPROVED_QUICK); k3 YDnMRA9  
} <\9M+  
private static String[] name={ T[?toqkD>z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3eg)O34  
}; Wubvvm8U  
"-WEUz  
private static Sort[] impl=new Sort[]{ Bb~Q]V=x;  
new InsertSort(), h@^d Vg  
new BubbleSort(), w~3~:w$  
new SelectionSort(), gsSUmf1  
new ShellSort(), 1-h"1UN2E  
new QuickSort(), e[>c>F^  
new ImprovedQuickSort(), *(?tf{  
new MergeSort(), T> !Y-e.q  
new ImprovedMergeSort(), /qKO9M5A  
new HeapSort() y5p)z"  
}; "8NhrUX  
~"Q24I  
public static String toString(int algorithm){ -;i vBR  
return name[algorithm-1]; 0bcbH9) 1q  
} <%SG <|t  
`veq/!  
public static void sort(int[] data, int algorithm) { n/&}|998?  
impl[algorithm-1].sort(data); #},4m  
} kT=KxS{  
1 luRTI8^  
public static interface Sort { }Qqi013E L  
public void sort(int[] data); &>YdX$8x  
} ;PA^.RB  
[yEH!7  
public static void swap(int[] data, int i, int j) { C{5bG=Sg~  
int temp = data; R9!GDKts%  
data = data[j]; ; xz}]@]Ar  
data[j] = temp; O1 KT  
} Z ZMz0^V  
} I?z*.yA*  
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