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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。 \C`2z]V%  
插入排序: eX o@3/  
0y=lf+xA*  
package org.rut.util.algorithm.support; *"j3x} U<  
Oyy E0  
import org.rut.util.algorithm.SortUtil; ?I 7hbqQd  
/** fUB+9G(Bx  
* @author treeroot Kk/cI6`W  
* @since 2006-2-2 't3nh  
* @version 1.0 fCi1JH;  
*/ `^ uX`M/  
public class InsertSort implements SortUtil.Sort{ h5@JS1cY  
\PK}4<x}  
/* (non-Javadoc) u=sZFr@m[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6"La`}B(T8  
*/ j6BFh=?D  
public void sort(int[] data) { =T|m#*{.L  
int temp; f/g-b]0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JPkI+0  
} {(^%2dk83C  
} yo#fJ`  
} # |,c3$  
NV9H"fI  
} >~\CiV4^  
7R>Pk9J  
冒泡排序: <_-8)abK  
IHj9n>c)[  
package org.rut.util.algorithm.support; r~T3Ieb  
41\V;yib  
import org.rut.util.algorithm.SortUtil; ?., 2EC=+  
w(nQ:;oC  
/** Y!AQ7F  
* @author treeroot Yx<wYzD  
* @since 2006-2-2 .0]Odf:@  
* @version 1.0 1)ZdkTF@H  
*/ jLreN#:9  
public class BubbleSort implements SortUtil.Sort{ PA>su)N$  
/` 4B-Y4M4  
/* (non-Javadoc) k_7agW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cy#N(S[ 1  
*/ G1/  
public void sort(int[] data) { aT PmW]w6  
int temp; 1#^r5E4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ n}4Lq^$  
if(data[j] SortUtil.swap(data,j,j-1); 5w@Q %'o`I  
} 1fU~&?&-u  
} '0/[%Q  
} 4GqE%n+ta~  
} W> rx:O+  
}B2qtb3  
} |BA<> WE  
>y iE}  
选择排序: L@8C t  
 WfkP  
package org.rut.util.algorithm.support; X1Y+ao1)  
$Z4IPs  
import org.rut.util.algorithm.SortUtil; `i3fC&?C  
d]QCk &XU  
/** w"BMJ+  
* @author treeroot @3I/57u<  
* @since 2006-2-2 \k*h& :$  
* @version 1.0 lcEin*Oc  
*/ IT\ x0b cv  
public class SelectionSort implements SortUtil.Sort { O_y?53X  
f`8mES'gc8  
/* Q)}z$h55  
* (non-Javadoc) 5tl uS  
* HDT-f9%}<4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kS$m$ D  
*/ a1# 'uS9W  
public void sort(int[] data) { ;U$EM+9  
int temp; Ems0"e  
for (int i = 0; i < data.length; i++) { 2~2j?\AEd.  
int lowIndex = i; pt- 1>Ui  
for (int j = data.length - 1; j > i; j--) { +@5*_n\e`  
if (data[j] < data[lowIndex]) { y7Sj^muBY  
lowIndex = j; m6M:l"u  
} {-)*.l=  
} x>~.cey  
SortUtil.swap(data,i,lowIndex); =CjN=FM  
} nwPU{4#l<  
} UvM_~qo  
q. NvwJ  
} ,N`D{H"F  
M[,G#GO  
Shell排序: ~F=,)GE  
Z|qUVD5Ic  
package org.rut.util.algorithm.support; +a((,wAN2  
#gY|T|  
import org.rut.util.algorithm.SortUtil;  0@dN$e  
6i_dL|c  
/** xEvm>BZi  
* @author treeroot T&~7*j(|e  
* @since 2006-2-2 xl;0&/7e  
* @version 1.0 9!|+GIjn  
*/ @m Id{w z  
public class ShellSort implements SortUtil.Sort{ MyJG2C#R  
B5fF\N^  
/* (non-Javadoc) {>R'IjFc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _=RK  
*/ 1# X*kF  
public void sort(int[] data) { Bwg\_:vq  
for(int i=data.length/2;i>2;i/=2){ Gmp`3  
for(int j=0;j insertSort(data,j,i); S K7b]J>  
} w00Ba^W  
} !`EhVV8u-_  
insertSort(data,0,1); C#4/~+  
} q X>\*@  
Q XV8][  
/** 2rJeON  
* @param data Wg ?P"  
* @param j #Do#e {=+  
* @param i 2OQDG7#Kc  
*/ 26<Wg7/,  
private void insertSort(int[] data, int start, int inc) { W;@9x1jK X  
int temp; ,=Fn6'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?sm@lDZ\  
} S2*ER  
} auT'ATW7i  
} yCOIv!/zy  
s;4r)9Uvx  
} VPqMbr"L[  
Du."O]syD  
快速排序: !wZ  9P  
 V_-{TGKX  
package org.rut.util.algorithm.support; $(U}#[Vie  
7f\@3r  
import org.rut.util.algorithm.SortUtil; rc9Y:(S1l  
#cD20t  
/** gaXKP1m^  
* @author treeroot 9 ?~Y  
* @since 2006-2-2 iu(+ N~  
* @version 1.0 #J<IHNRt  
*/ K:g:GEDgf  
public class QuickSort implements SortUtil.Sort{ 0x/3Xz  
 ~ok i s  
/* (non-Javadoc) O9tgS@*Tv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bxA1fA;  
*/ auS.q5 %  
public void sort(int[] data) { q=40  l  
quickSort(data,0,data.length-1); }^R_8{>k  
} Jf{ M[ z  
private void quickSort(int[] data,int i,int j){ @*rED6zH  
int pivotIndex=(i+j)/2; --9Z  
file://swap Nu%:7  
SortUtil.swap(data,pivotIndex,j); 9x40  
c@1q8,  
int k=partition(data,i-1,j,data[j]); Hz6yy*  
SortUtil.swap(data,k,j); }th^l*g  
if((k-i)>1) quickSort(data,i,k-1); }475c{  
if((j-k)>1) quickSort(data,k+1,j); [M{EO)  
3!V$fl0  
} p/f!\  
/** Y!tjaL 9D  
* @param data >&3ATH;&(  
* @param i OK^0,0kS3  
* @param j :&oUI&(o  
* @return Lv{xwHnE  
*/ ) "o+wSI1  
private int partition(int[] data, int l, int r,int pivot) { [Ifhh2  
do{ 8xEOR!\!`k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;y{VdT  
SortUtil.swap(data,l,r); :9Vd=M6,  
} -=A W. Z o  
while(l SortUtil.swap(data,l,r); ;dh8|ujh  
return l; a|v}L,  
} }lzQMT  
K9J"Q4pEC  
} fx783  
k-LT'>CWl  
改进后的快速排序: V ^U1o[`  
i!=2 8|_  
package org.rut.util.algorithm.support; ?9 8]\pI  
Dxwv\+7]  
import org.rut.util.algorithm.SortUtil; OLdD3OI  
,t]qe  
/** J '^xDIZX  
* @author treeroot *KXg;777  
* @since 2006-2-2 8uO@S*)0  
* @version 1.0 M:~/e8Xv  
*/ /<s $Am  
public class ImprovedQuickSort implements SortUtil.Sort { 6!3Jr  
I:qfB2tL)O  
private static int MAX_STACK_SIZE=4096; n6a*|rE  
private static int THRESHOLD=10; T"GuE[?a  
/* (non-Javadoc) /@H2m\vBX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) joN}N}U  
*/ $.z~bmH"D  
public void sort(int[] data) { +HK)A%QI  
int[] stack=new int[MAX_STACK_SIZE]; D-8>?`n\  
BI\+ NGrB  
int top=-1; 5w#*JK   
int pivot; '%m0@5|hCD  
int pivotIndex,l,r; DJ9;{,gm  
N+vU@)_lC  
stack[++top]=0; 0KF)+`CC>  
stack[++top]=data.length-1; v^lR]9;  
` tkd1M  
while(top>0){ | 3`qT#p{  
int j=stack[top--]; 9 o7d3ir)  
int i=stack[top--]; / h6(!-"  
Z`?<Ada  
pivotIndex=(i+j)/2; q-.e9eoc\  
pivot=data[pivotIndex]; xmDX1sL**  
Ohm>^N;  
SortUtil.swap(data,pivotIndex,j); >q&Q4E0  
=oF6|\]{ ;  
file://partition ZHs hg`I`  
l=i-1; !_`T8pJ`  
r=j; toipEp<ci  
do{ !j(KbAhWZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MGO.dRy_  
SortUtil.swap(data,l,r); p 0.?R  
} n(Up?_  
while(l SortUtil.swap(data,l,r); ^/W 7Xd(s  
SortUtil.swap(data,l,j); tH:K6^oR  
2.2Z'$W  
if((l-i)>THRESHOLD){ 6[9E^{(z  
stack[++top]=i; n/"T7Y\2  
stack[++top]=l-1; 6Upg\(  
} wE75HE`gW  
if((j-l)>THRESHOLD){ v`hv5wQ  
stack[++top]=l+1; \ooqa<_  
stack[++top]=j; Gc9^Z=  
} W RAW%?$  
(%>Sln5hq  
} 9xg_M=72  
file://new InsertSort().sort(data); 2`* %NJ  
insertSort(data); x~GV#c  
} ED/-,>[f  
/** tji,by#E/%  
* @param data 34C ^vBp  
*/ LIH>IpamN  
private void insertSort(int[] data) { J1<fE(X  
int temp; )).;p_nLZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1V`]sfRK  
} -aNTFt~|[  
} skcMGEB  
} x 0  
 &1Fcwj  
} EGwY|+3  
Snt=Hil`  
归并排序: H/V%D O  
|?Q(4(D`*  
package org.rut.util.algorithm.support; u,F d[[t  
nRQIrUNq  
import org.rut.util.algorithm.SortUtil; .bl0w"c^qq  
}bznx[4?I  
/** L>UYR++<6  
* @author treeroot #|XEBOmsQ  
* @since 2006-2-2 0iX qAa  
* @version 1.0 ke>\.|HT}  
*/ 1TQ $(bI  
public class MergeSort implements SortUtil.Sort{ Kc udWW]  
4Sg!NPuu7&  
/* (non-Javadoc) U>;itHW/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f 5i`B*/  
*/ =zA=D.D2  
public void sort(int[] data) { -R'p^cMA  
int[] temp=new int[data.length]; 7IJb$af:;  
mergeSort(data,temp,0,data.length-1); 3r em"M  
} ~v>w%]  
e( ^9fg_SG  
private void mergeSort(int[] data,int[] temp,int l,int r){ (&MSP  
int mid=(l+r)/2; t=\V&,  
if(l==r) return ; wH Z!t,g  
mergeSort(data,temp,l,mid); R~*Y@_oD  
mergeSort(data,temp,mid+1,r); @@|E1'c7  
for(int i=l;i<=r;i++){ M]` Q4\  
temp=data; G P1>h.J  
} :=L[kzX  
int i1=l; !P Gow  
int i2=mid+1; H5RHA^p|  
for(int cur=l;cur<=r;cur++){ Y)u} +Yg  
if(i1==mid+1) SbnV U[  
data[cur]=temp[i2++]; 3}:pD]`h  
else if(i2>r) 0v7;Z xD  
data[cur]=temp[i1++]; 2K*-uT#$~  
else if(temp[i1] data[cur]=temp[i1++]; IVNNiNN*5  
else paBGJ~{=  
data[cur]=temp[i2++]; el|t6ZT*  
} Z `\7B e  
} ^}1RDdQ"U  
oh@r0`J]x  
} RO.(k!J .  
g[M@  
改进后的归并排序: T4!]^_t^  
yL Q&<\  
package org.rut.util.algorithm.support; <Z8] W1)  
Ic=V:  
import org.rut.util.algorithm.SortUtil; _Mt:^H}Sy  
)q l?}  
/** }ZmdX^xB  
* @author treeroot UdI>x 4bI  
* @since 2006-2-2 DpS6>$v8t  
* @version 1.0 .sG,TLE[<  
*/ ONjc},_  
public class ImprovedMergeSort implements SortUtil.Sort { O[L8(+Sn  
'6 'XBL?  
private static final int THRESHOLD = 10; {hg$?4IyQ  
c&Zm>Qo[  
/* g?$9~/h :;  
* (non-Javadoc) }"&(sYQ*`  
* Ro1' L1:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^,KR0  
*/ Fo G<$9  
public void sort(int[] data) { 5nj~RUK  
int[] temp=new int[data.length]; b<( W}$x  
mergeSort(data,temp,0,data.length-1); )(L&+DDy  
} <@vE 3v;  
.FXQ,7mZ-  
private void mergeSort(int[] data, int[] temp, int l, int r) { twu6z5<!-=  
int i, j, k; ppnj.tLz;r  
int mid = (l + r) / 2; p 5o;Rvr  
if (l == r) KFs` u6  
return; Q~@8t"P  
if ((mid - l) >= THRESHOLD) 9bNIaC*M  
mergeSort(data, temp, l, mid); cY"^3Ot%^  
else *tO<wp&  
insertSort(data, l, mid - l + 1); B)Q'a3d#  
if ((r - mid) > THRESHOLD) a,4g`?  
mergeSort(data, temp, mid + 1, r); V]O :;(W_  
else Ur-^X(nL  
insertSort(data, mid + 1, r - mid); _N:h&uw  
u=l(W(9=  
for (i = l; i <= mid; i++) { .)3 2WD%  
temp = data; {;}8Z$  
} sR 9F:  
for (j = 1; j <= r - mid; j++) { Ii,:+o%  
temp[r - j + 1] = data[j + mid]; p_AV3   
} $K KaA{0-  
int a = temp[l]; W^N"y &  
int b = temp[r]; +i>q;=~  
for (i = l, j = r, k = l; k <= r; k++) { *@& "MZ/M  
if (a < b) { 1wgu%$|d  
data[k] = temp[i++]; Yq^y"rw  
a = temp; -&EmEXs%  
} else { ( 7?%Hg  
data[k] = temp[j--]; !:t9{z{Ixg  
b = temp[j]; |i`@!NrFL  
} E&+ ^H on  
} 6-=_i)kzq  
} }gW}Vr <  
mCGcM^21-x  
/** uf^:3{1  
* @param data 0|ps),  
* @param l ?},ItJ#>)q  
* @param i 1;P\mff3Y  
*/ `aUp&8{  
private void insertSort(int[] data, int start, int len) {  +o  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1pb;A;F,A  
} }SV3PdE  
} Y2X1!Em>B  
} rxK0<pWJhx  
} QRlzGRueR&  
2f!oA~|2  
堆排序: [tzSr=,Cg  
L)}V [j#  
package org.rut.util.algorithm.support; vVYduvw  
0'hxw3#  
import org.rut.util.algorithm.SortUtil; !_ Q!H2il  
OQ7c| O  
/** MI(i%$R-A  
* @author treeroot ^I{]Um:  
* @since 2006-2-2 $t$f1?  
* @version 1.0 `&_k\/  
*/ kkBU<L2  
public class HeapSort implements SortUtil.Sort{ $/TA5h  
<S$21NtM87  
/* (non-Javadoc) ~It+|X=Kx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z5Ihc%J^  
*/ C[nr>   
public void sort(int[] data) { LH#LBjOZk  
MaxHeap h=new MaxHeap(); " B{0-H+  
h.init(data); WWcm(q =  
for(int i=0;i h.remove(); X-$td~r  
System.arraycopy(h.queue,1,data,0,data.length); k6L373e#Q  
} iwJ-<v_:h  
`^-Be  
private static class MaxHeap{ +~Lzsh"  
&H1D!N  
void init(int[] data){ +g6j =%  
this.queue=new int[data.length+1]; ^Cn]+0G#C8  
for(int i=0;i queue[++size]=data; ?gwbg*  
fixUp(size); R%_H\-wo  
} 0 a6@HwO  
} @Q\$dneY  
2Lekckgv  
private int size=0; 7Y|>xx=v  
o>;0NF| }  
private int[] queue; &IEBZB\/+&  
$t# ,'M  
public int get() { }0*ra37z>  
return queue[1]; &@utAuI  
} &9dr+o-(~  
06 Esc^D  
public void remove() { 8+|V!q   
SortUtil.swap(queue,1,size--); hf^`at  
fixDown(1); k\&IFSp  
} n+\Cw`'<H  
file://fixdown bC4* w O  
private void fixDown(int k) { [{p?BTs  
int j; 4a.e ,gitf  
while ((j = k << 1) <= size) { y~c4:*L3  
if (j < size %26amp;%26amp; queue[j] j++; HvgK_'  
if (queue[k]>queue[j]) file://不用交换 BdB`  
break; Hrg=sR  
SortUtil.swap(queue,j,k); b|ksMB>)  
k = j; TQ\wHJ  
} v(@+6#&  
} zGL<m0C  
private void fixUp(int k) { iWN.3|r  
while (k > 1) { `b#nC[b6|v  
int j = k >> 1; _/%]:  
if (queue[j]>queue[k]) F {*9[jY  
break; G9'YgW+$7  
SortUtil.swap(queue,j,k); oY2?W  
k = j; )-9w3W1r  
} xL39>PB  
} 8A8xY446)  
3 !>L?  
} lQ<#jxp  
J!A/r<  
} qSC~^N`  
3h[:0W!C]  
SortUtil: wwK~H  
DNm7z[ t{  
package org.rut.util.algorithm; R(/[NvUb  
8!&ds~?  
import org.rut.util.algorithm.support.BubbleSort; 6Y>,e;R  
import org.rut.util.algorithm.support.HeapSort; *3F /Ft5  
import org.rut.util.algorithm.support.ImprovedMergeSort; x<{;1F,k3  
import org.rut.util.algorithm.support.ImprovedQuickSort; P$(WdVG  
import org.rut.util.algorithm.support.InsertSort; 4iYKW2a  
import org.rut.util.algorithm.support.MergeSort; N.5KPAvg%  
import org.rut.util.algorithm.support.QuickSort; HoIKx_  
import org.rut.util.algorithm.support.SelectionSort; XC7Ty'#"KX  
import org.rut.util.algorithm.support.ShellSort; <(#xOe  
CSG+bqUG  
/** ~.4W,QLuD  
* @author treeroot wcdW72   
* @since 2006-2-2 B{OW}D$P#  
* @version 1.0 Jv 6nlK`  
*/ X]zCTY=l  
public class SortUtil { {m_A1D/_  
public final static int INSERT = 1; 1IOo?e=/bM  
public final static int BUBBLE = 2; nCffBc  
public final static int SELECTION = 3; `Ct'/h{  
public final static int SHELL = 4; u5cVz_S  
public final static int QUICK = 5; .-('C> @  
public final static int IMPROVED_QUICK = 6; NRHr6!f>  
public final static int MERGE = 7; ]/ZA/:Oa+  
public final static int IMPROVED_MERGE = 8; zqekkR]  
public final static int HEAP = 9; r6F{  
` x%U  
public static void sort(int[] data) { ^Txu ~r0@  
sort(data, IMPROVED_QUICK); pPiYPfs  
} q9W~7  
private static String[] name={ bk\dy7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;xW8Z<\-  
}; #Dj"W8'zh  
?Kx6Sf<i  
private static Sort[] impl=new Sort[]{  95.qAFB1  
new InsertSort(), c W81  
new BubbleSort(), R/ ALR  
new SelectionSort(), z9k*1:  
new ShellSort(), b"ol\&1 #  
new QuickSort(), r,`Z.A  
new ImprovedQuickSort(), ShL1'Z} ^{  
new MergeSort(), ]~j_N^oZ1X  
new ImprovedMergeSort(), (*Gi~?-  
new HeapSort() L?=#*4t  
}; 6)=](VmNL`  
hw&ke$Fg#  
public static String toString(int algorithm){ ONjC(7  
return name[algorithm-1]; rmY,v  
} XysFwi  
bDciZ7[b  
public static void sort(int[] data, int algorithm) { m!HC-[<  
impl[algorithm-1].sort(data); ;,v!7   
} s"I-YFP%c  
_-4n ~(  
public static interface Sort { ^?$D.^g  
public void sort(int[] data); @wd!&%yzO  
} y;,=a jrF  
3+CSQb8  
public static void swap(int[] data, int i, int j) { K(-G: |  
int temp = data; Nj0-`j0E  
data = data[j]; ~mN g[]  
data[j] = temp; :.C+?$iuX  
} -rE eKt  
} 8ku? W  
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