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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。 G#Bm">+  
插入排序: N?c~AEk9U  
NcbW"Qv3  
package org.rut.util.algorithm.support; v,opyTwG|  
##By!F TP  
import org.rut.util.algorithm.SortUtil; ~NE`Ad.G  
/** *_YH}U  
* @author treeroot <:AA R2=  
* @since 2006-2-2 ?Xpk"N7  
* @version 1.0 <c5g-*V:  
*/ kJ%a;p`O  
public class InsertSort implements SortUtil.Sort{ }#tbK 2[  
7 2i&-`&4  
/* (non-Javadoc) a`:F07r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |;:Kn*0/]  
*/ tVf):}<h  
public void sort(int[] data) { B4HMs$>   
int temp; pFs/ipZX^*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (mbm',%-(  
} +9]t]Vrw  
} '_Q';T_n99  
} 3rMi:*?  
Mk9J~'C_  
} ]w,|WZm  
;Tk/}Od!VN  
冒泡排序: [ Y{  
CXGMc)#>f  
package org.rut.util.algorithm.support; 'I}wN5`  
;d fIzi  
import org.rut.util.algorithm.SortUtil; >bI\pJ  
G,+3(C  
/** *'?V>q,  
* @author treeroot uMm`j?Y23q  
* @since 2006-2-2 %jx<<hW  
* @version 1.0 *yHz#u'  
*/ N2|NYDQs  
public class BubbleSort implements SortUtil.Sort{ DD  
74NL)|M  
/* (non-Javadoc) [j TU nP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W@z xGH$z>  
*/ 6)ysiAH?  
public void sort(int[] data) { Kc@Sw{JR#7  
int temp; 0,&] 2YJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,jW a&7  
if(data[j] SortUtil.swap(data,j,j-1); F_ -Xx"  
}  jrS$!cEo  
} 9:3`LY3wW  
} A!^r9?<  
} LEN=pqGJ.  
lSoAw-@At8  
} > Xij+tt{  
^R :zma  
选择排序: *2.h*y'u  
p1.3)=T  
package org.rut.util.algorithm.support; Gf+X<a  
.h/2-pQ>  
import org.rut.util.algorithm.SortUtil; -2u)orWP  
* RX^ z6  
/** ^U*1_|Jh  
* @author treeroot $tc1 te  
* @since 2006-2-2 MO| Dwuaf  
* @version 1.0 " &`>+Yw  
*/ |+[Y_j  
public class SelectionSort implements SortUtil.Sort { j B1ZF#  
9; 9ge  
/* C7AD1rl  
* (non-Javadoc) }}rp/16  
* :AQ9-&i/a-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fo~*Bp()-E  
*/ (F3R!n  
public void sort(int[] data) { +M#}(hK  
int temp; %2B1E( r%M  
for (int i = 0; i < data.length; i++) { KLu Og$i  
int lowIndex = i; jS8B:>  
for (int j = data.length - 1; j > i; j--) { W1LR ,:$  
if (data[j] < data[lowIndex]) { \hEIQjfi  
lowIndex = j; 1U^KN~!  
} _7qa~7?f  
} >lyE@S sA  
SortUtil.swap(data,i,lowIndex); 0V86]zSo  
} <c<!|<x  
} q \fyp\z  
nz#eJ  
} R[* n3 wB  
"(dI/}  
Shell排序: ][#|5UK8L  
9:=:P>  
package org.rut.util.algorithm.support; CvEIcm=t  
Bu?Qyz2O  
import org.rut.util.algorithm.SortUtil; M)Z!W3  
jaavh6h)  
/** O 9M?Wk :  
* @author treeroot qzO5p=}  
* @since 2006-2-2 yOAC<<Tzus  
* @version 1.0 jffNA^e  
*/ V,8Z!.MG  
public class ShellSort implements SortUtil.Sort{ V eY&pPQ  
bC) <K/Q9  
/* (non-Javadoc) ?4aW^l6/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1A#/70Mo  
*/ fU$_5v4  
public void sort(int[] data) { 8$Zwk7 w8A  
for(int i=data.length/2;i>2;i/=2){ c6h+8QS  
for(int j=0;j insertSort(data,j,i); &#gh :5  
} y7rT[f/J  
} ( plT/0=^t  
insertSort(data,0,1); A;&YPHB  
} UlNV%34"  
V\]j^$  
/** L 8;H_:~_'  
* @param data :qj;f];|  
* @param j cD)9EFo  
* @param i l%?4L/J)#  
*/ $<&_9T#&w  
private void insertSort(int[] data, int start, int inc) { x'OP0],#  
int temp; y9LO;{(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0M&~;`W}  
} #T{)y  
} P|p X F~  
} Hi/[  
#sg dMrVQ  
} =VT\$ 5A  
jt9- v-  
快速排序: ZH>i2|W<  
@3=q9ftm  
package org.rut.util.algorithm.support; }; M@JMu,  
G!G:YVWXP  
import org.rut.util.algorithm.SortUtil; b?lRada{I  
B*Om\I  
/** Y|J=72!]  
* @author treeroot ?$uF(>LD  
* @since 2006-2-2 G`Z<a  
* @version 1.0 Hvy$DX|p  
*/ %X}vuE[[UC  
public class QuickSort implements SortUtil.Sort{ Doq}UWp  
D]rYg'  
/* (non-Javadoc) 4`fV_H.8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J P5en  
*/ VlSM/y5  
public void sort(int[] data) { sDTw</@  
quickSort(data,0,data.length-1); :F#^Q%-IS  
} J4U_utp  
private void quickSort(int[] data,int i,int j){ 1LhZmv  
int pivotIndex=(i+j)/2; kumo%TXB&  
file://swap ja/wI'J<  
SortUtil.swap(data,pivotIndex,j); 9V&+xbR&  
2Ub-ufkU  
int k=partition(data,i-1,j,data[j]); SDNRcSbOD6  
SortUtil.swap(data,k,j); U>bIQk"4  
if((k-i)>1) quickSort(data,i,k-1); i+< v7?:`#  
if((j-k)>1) quickSort(data,k+1,j); n9k  
*O@Zn  
}  7( Z9\  
/** 0R `>F">  
* @param data "UhE'\()  
* @param i ,F` 1VpTd8  
* @param j m_Z(osoE#W  
* @return T /IX(b'<  
*/ wgolgof  
private int partition(int[] data, int l, int r,int pivot) { Q=vo5)t   
do{ 8g-Z~~0W1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P?c V d2Y  
SortUtil.swap(data,l,r); /-m)  
} *n# =3D  
while(l SortUtil.swap(data,l,r); jq8TfJ|   
return l; qwnVtD  
} "oFi+']*  
\Ucv<S  
} bj 8pqw|;  
7bRfkKD  
改进后的快速排序: .f;@O qU  
_s5FYb#  
package org.rut.util.algorithm.support; PNo:vRtsq  
L]"$d F  
import org.rut.util.algorithm.SortUtil; re#]zc<  
xx7&y !_  
/** Q8QB{*4  
* @author treeroot 3PL0bejaT7  
* @since 2006-2-2 )b=vBs`%  
* @version 1.0 Rbr:Q]zGN  
*/ q@XJ,e1A  
public class ImprovedQuickSort implements SortUtil.Sort { ,,80nW9E  
-'d`(G"  
private static int MAX_STACK_SIZE=4096; T"C.>G'[B  
private static int THRESHOLD=10; 3vAP&i'I  
/* (non-Javadoc) jOGiT|A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]GCw3r(!  
*/ KSEKoHJo  
public void sort(int[] data) { .V0fbHYTJ  
int[] stack=new int[MAX_STACK_SIZE]; 'NfsAE  
{}iS5[H]  
int top=-1; "cly99t  
int pivot; !Icznou\  
int pivotIndex,l,r; /YJBRU2  
#*"V'dj;e  
stack[++top]=0; Bj><0 cNF  
stack[++top]=data.length-1; L>E{~yh  
\dE{[^.5  
while(top>0){ yI07E "9  
int j=stack[top--]; q*Hg-J}  
int i=stack[top--]; }2m>S6""A  
fGs\R]  
pivotIndex=(i+j)/2; `nEqw/I  
pivot=data[pivotIndex]; ; qbK[3.  
T@#?{eA  
SortUtil.swap(data,pivotIndex,j); _nxu8g]  
z-g6d(  
file://partition Y+vIU*O  
l=i-1;  ggM~Chr  
r=j; ZPq.|6&  
do{ w,R6:*p5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~dLbhjde n  
SortUtil.swap(data,l,r); 2$!,$J-<Y  
} !?+0O]`}  
while(l SortUtil.swap(data,l,r); iT O Y  
SortUtil.swap(data,l,j); ^*B@=  
cT/mi": 8{  
if((l-i)>THRESHOLD){ <}8G1<QZ'.  
stack[++top]=i; KECW~e`  
stack[++top]=l-1; [cznhIvyO  
} Y= =5\;-  
if((j-l)>THRESHOLD){ >m <T+{`  
stack[++top]=l+1; *HGhm04F{  
stack[++top]=j; 9(z) ^ G  
} jJt4{c  
Ef ?|0Gm  
} YTY(Et1i  
file://new InsertSort().sort(data); $ywROa]  
insertSort(data); !dh:jPpKq  
} ^P]5@dv  
/** _j0xL{&&  
* @param data x FM^-`7  
*/ 34k>O  
private void insertSort(int[] data) { I\c7V~^hnG  
int temp; "zQ<)Q]U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EfpMzD7/(  
} BtKor6ba  
} wqV"fZA\]  
}  iD])E/  
Fo;:GX,b  
} jrz.n 4Y`  
WQiRbbX  
归并排序: T{`VUS/  
.sM,U  
package org.rut.util.algorithm.support; dKU :\y  
:g|NE\z`)/  
import org.rut.util.algorithm.SortUtil; Qy[S~D_  
7ZyP  
/** a8ouk7 G  
* @author treeroot 4e AMb  
* @since 2006-2-2 zb"4_L@m2  
* @version 1.0 Wq5}LO)  
*/ Gr/}&+S  
public class MergeSort implements SortUtil.Sort{ $@] xi  
3"v>y]$U  
/* (non-Javadoc) -OU{99$aS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _`^AgRE  
*/ xfI0P0+  
public void sort(int[] data) { M eep  
int[] temp=new int[data.length]; j%w^8}U>G  
mergeSort(data,temp,0,data.length-1); +/RR!vG,  
} "M /Cl|z  
?nbu`K6T  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4KR`  
int mid=(l+r)/2; K*b* ]hf{  
if(l==r) return ; !vpXXI4  
mergeSort(data,temp,l,mid); =H;'.!77Hx  
mergeSort(data,temp,mid+1,r); b6Z3(!] ]  
for(int i=l;i<=r;i++){ ]d7A|)q  
temp=data; u7RlxA:  
} : #?_4D!r  
int i1=l; G7v<Q,s  
int i2=mid+1; S$$SLy:P  
for(int cur=l;cur<=r;cur++){ _kMHF  
if(i1==mid+1) W SxoGly  
data[cur]=temp[i2++]; %*npLDi  
else if(i2>r) FJCORa@?_  
data[cur]=temp[i1++]; ?a% F3B  
else if(temp[i1] data[cur]=temp[i1++]; tD}-&"REP  
else E0fMFG^P  
data[cur]=temp[i2++]; u%yYLpaKf  
} 9*K-d'm  
} N"G\ H<n  
Ay 4P_>^  
} kp<Au)u  
s5mJ -  
改进后的归并排序: 4;AQ12<[1  
ji\LC%U-  
package org.rut.util.algorithm.support; fmQif]J;;  
V V}"zc^  
import org.rut.util.algorithm.SortUtil; \zFCph4  
'/6f2[%Y"  
/** eZ[Qhrc  
* @author treeroot $t}W,?   
* @since 2006-2-2 A- Abj'  
* @version 1.0 41Q)w=hoN  
*/ %$Py@g  
public class ImprovedMergeSort implements SortUtil.Sort { DeNWh2  
(GL'm[V  
private static final int THRESHOLD = 10; J(/J;PW  
"9aFA(H6w  
/* IZLCwaW  
* (non-Javadoc) W5Pur lu?  
* !> +Lre@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vq`/]&  
*/ 4~$U#$u_  
public void sort(int[] data) { dJnKa]X  
int[] temp=new int[data.length]; <D)@;A  
mergeSort(data,temp,0,data.length-1); oPaoQbR(A  
} CL7 /J[TS  
{v=[~H>bt  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,P`GIGvkA  
int i, j, k; y_q1Y70i2r  
int mid = (l + r) / 2; ~'0n ]Fw  
if (l == r) PHI c7*_  
return; Nb_Glf  
if ((mid - l) >= THRESHOLD) Vraz}JV  
mergeSort(data, temp, l, mid); $E^sA|KcT  
else :R:@V#Y  
insertSort(data, l, mid - l + 1); @g;DA)!(  
if ((r - mid) > THRESHOLD) V/"RCqY4  
mergeSort(data, temp, mid + 1, r); t5K#nRd Z:  
else d#bg(y\G|  
insertSort(data, mid + 1, r - mid); ,98 F  
G,Eh8 HboK  
for (i = l; i <= mid; i++) { *)^ ZUk  
temp = data; Z> Rshtg  
} 0k?]~ f  
for (j = 1; j <= r - mid; j++) { )c9Xp:  
temp[r - j + 1] = data[j + mid]; ( )ldn?v  
} ,H/O"%OJ  
int a = temp[l]; :KG=3un]  
int b = temp[r]; _1$Y\Y  
for (i = l, j = r, k = l; k <= r; k++) { s/11 TgJ  
if (a < b) { &{a#8sbf#c  
data[k] = temp[i++]; f]?&R c2C  
a = temp; 30Qp:_D  
} else {  oSy9Xw  
data[k] = temp[j--]; [U^Cz{G  
b = temp[j]; $kmY[FWu?  
} >< S2o%u~  
} oVbs^sbRH  
} `#`C.:/n  
hmuhq:<f  
/** ?^7X2 u$nm  
* @param data w7pX]<?R"  
* @param l 0 .T5% _ /  
* @param i .Sa=VC?EZ  
*/ @t$yg$Q?[  
private void insertSort(int[] data, int start, int len) { wnXU=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e F}KOOfC  
} 3bo [34  
} A8S9HXL  
} 0/7.RpX,.  
} mOTA  
/FPO'} 6i  
堆排序: $1zWQJd[-  
IFa~`Gf[  
package org.rut.util.algorithm.support; 5t_Dt<lIz  
ta x:9j|~  
import org.rut.util.algorithm.SortUtil; !>Q\Y`a,*  
LZs'hA<L  
/** .V_5q:tu  
* @author treeroot 8o $ ` '  
* @since 2006-2-2 i=P}i8,^ =  
* @version 1.0 5^ ubXA  
*/ >X"\+7bw  
public class HeapSort implements SortUtil.Sort{ 8+Gwv SDU  
#a tL2(wJ  
/* (non-Javadoc) b^}U^2S%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vl<7>  
*/ .V UnOdI  
public void sort(int[] data) { _E6N*ORV  
MaxHeap h=new MaxHeap(); ZIh)D[n  
h.init(data); mC(YO y  
for(int i=0;i h.remove(); Qr6PkHU  
System.arraycopy(h.queue,1,data,0,data.length); e$`hRZ%  
} H}CmSo8&  
\,v+ejhw  
private static class MaxHeap{ ,zK E$  
d(b~s2\i  
void init(int[] data){ 8=0I4\  
this.queue=new int[data.length+1]; V(io!8,  
for(int i=0;i queue[++size]=data; K,U8vc  
fixUp(size); 0&2`)W?9  
} `YMd0*  
} ?FR-a Xx  
<nN# K{AH  
private int size=0; tAY{+N]f  
qss )5a/x.  
private int[] queue; C 'Y2kb  
&rX#A@=  
public int get() { =2} kiLKO  
return queue[1]; 7~k=t!gTY  
} '^$+G0jv  
H5:f&m  
public void remove() { +#<Z/  
SortUtil.swap(queue,1,size--); ~ ^   
fixDown(1); 5)hfI7{d  
} )%n $_N n  
file://fixdown >&7^yXS  
private void fixDown(int k) { ?0+g.,9  
int j; d/~g3n>|  
while ((j = k << 1) <= size) { \[*q~95$v  
if (j < size %26amp;%26amp; queue[j] j++; 3 5L0 CM  
if (queue[k]>queue[j]) file://不用交换 HTvUt*U1  
break; s2 :Vm\  
SortUtil.swap(queue,j,k); MPw?HpM  
k = j; &%t&[Se_~  
} 8~TKiR5  
} ;_E|I=%'E  
private void fixUp(int k) { OIjSH~a.  
while (k > 1) { WLfDXx 2A  
int j = k >> 1; Np ru  
if (queue[j]>queue[k]) urCTP.F  
break; j|!t3}((  
SortUtil.swap(queue,j,k); #k`gm)|  
k = j; i27)c)\BM  
} Ud e?[6  
} "dvo@n|  
[+ xsX*+  
} K{"hf:k  
]yZ%wU9!  
} *kYGXT,f]  
s;* UP   
SortUtil: t4/ye>P &  
_nxH;Za  
package org.rut.util.algorithm; |5X[/Q*K`W  
mZPvG  
import org.rut.util.algorithm.support.BubbleSort; (j??  
import org.rut.util.algorithm.support.HeapSort; d%-/U!z?  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]t`SCsoo  
import org.rut.util.algorithm.support.ImprovedQuickSort; \hBzP^*"n  
import org.rut.util.algorithm.support.InsertSort; YhS_ ,3E  
import org.rut.util.algorithm.support.MergeSort; CS(2bj^6 D  
import org.rut.util.algorithm.support.QuickSort; c%gL3kOT  
import org.rut.util.algorithm.support.SelectionSort; i.`n^R;N  
import org.rut.util.algorithm.support.ShellSort; y)CvlI  
u'>94Gm}  
/** pi/0~ke4"  
* @author treeroot g=@d!]Z~[  
* @since 2006-2-2 }f?[m&<  
* @version 1.0 k{N!}%*2  
*/ >][D"  
public class SortUtil { } e+`Kxy  
public final static int INSERT = 1; l!&ik9m  
public final static int BUBBLE = 2; pq&[cA_w  
public final static int SELECTION = 3; ~ &Ne P  
public final static int SHELL = 4; x-X~'p'f  
public final static int QUICK = 5; #vga qe9  
public final static int IMPROVED_QUICK = 6; DF4CB#  
public final static int MERGE = 7; ^7YNM<_%@  
public final static int IMPROVED_MERGE = 8; 6L$KMYHE  
public final static int HEAP = 9; gBcs  
,qv\Y]  
public static void sort(int[] data) { \U>&W  
sort(data, IMPROVED_QUICK); liH#=C8l*%  
} >V27#L2:J  
private static String[] name={ NjOUe?BQ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vIOGDI>  
}; G:tY1'5  
aK@ Y) Ju'  
private static Sort[] impl=new Sort[]{ YI,t{Wy  
new InsertSort(), "V 26\  
new BubbleSort(), rz k;Q@1  
new SelectionSort(), rVoV@,P  
new ShellSort(), M>p<1`t-&  
new QuickSort(), Hcu!bOQ  
new ImprovedQuickSort(), ~o"=4q`>  
new MergeSort(), -8Mb~Hfl0  
new ImprovedMergeSort(), bHv"!  
new HeapSort() aXJ/"k #Tl  
}; Q'Osw"  
52tc|j6~#  
public static String toString(int algorithm){ rD SYR\cg  
return name[algorithm-1]; _r{H)}9  
} 0h*Le  
PD.$a-t  
public static void sort(int[] data, int algorithm) { 4hwb] Yz  
impl[algorithm-1].sort(data); wb?k  
} C`g "Mk8  
NOXP}M  
public static interface Sort { Rq5'=L  
public void sort(int[] data); l X+~;94  
} {&IB[Y6  
^py=]7[I  
public static void swap(int[] data, int i, int j) { rBTg"^jsw  
int temp = data; :)lG}c  
data = data[j]; @NRN#~S,_]  
data[j] = temp; },l i'r#p  
} (is',4^b  
} $e7%>*?m  
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