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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。 A#7/,1h\  
插入排序: nwS @r  
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package org.rut.util.algorithm.support; {#`O'F>  
Y8v13"P6  
import org.rut.util.algorithm.SortUtil; {=I:K|&  
/** }uR[H2D`L  
* @author treeroot R`5g#  
* @since 2006-2-2 d?ru8  
* @version 1.0 `D-P}hDm!  
*/ 2JdzeJb  
public class InsertSort implements SortUtil.Sort{ S@Iza9\|@  
A>\5fO  
/* (non-Javadoc) 4t 5i9+h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |VX )S!  
*/ &u+l`F^Z  
public void sort(int[] data) { VdL*"i  
int temp; ~ECIL7,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pl }nb Y  
} C]EkVcKFA  
} *c<6 Er>s  
} OI^??joQ  
^ YOC HXg  
} PfR|\{(  
2t7P| b~V1  
冒泡排序: g ?.y7!m  
!MXn&&e1  
package org.rut.util.algorithm.support; LUs)"ZAi|  
/9pN.E  
import org.rut.util.algorithm.SortUtil; =fRC$  
ObPXVqG"?  
/** &=^YN"=Z  
* @author treeroot pKtN$Fd  
* @since 2006-2-2 J8'1 ~$6  
* @version 1.0 ?kIyo  
*/ "hmLe(jo}  
public class BubbleSort implements SortUtil.Sort{ '@/1e\-y  
K<rv|bJ  
/* (non-Javadoc) ;A6%YY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,xw1B-dx  
*/ Tbp;xv_qo  
public void sort(int[] data) { v!`:{)2C  
int temp; &HQ_e$1  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $PstEL  
if(data[j] SortUtil.swap(data,j,j-1); ?:tk8Kgf  
} %lk^(@+ T  
} DFkDlx  
} bN\;m^xfu  
} u\{MQB{T  
Wsb>3J  
} z+Guu8  
v,'k 2H  
选择排序: ;kI)j ?  
4Ei8G]O $_  
package org.rut.util.algorithm.support; [g bFs-B2/  
1Q_Q-Z  
import org.rut.util.algorithm.SortUtil; KpBOmXE  
5e3p9K`5  
/** gvFJ~lL  
* @author treeroot S{m:Iij[;  
* @since 2006-2-2 /3#h]5Y"T  
* @version 1.0 0GlQWRa  
*/ %4wEAi$I  
public class SelectionSort implements SortUtil.Sort { aUF{57,<  
eQz.N<f"  
/* c/7}5#Rs  
* (non-Javadoc) h`dHk]O  
* ^g |j4N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;hPVe _/  
*/ %iB,hGatE  
public void sort(int[] data) { kQ]4Bo  
int temp; ]=o1to-  
for (int i = 0; i < data.length; i++) { fH@cC`  
int lowIndex = i; TMGYNb%<bX  
for (int j = data.length - 1; j > i; j--) { !1ZItJ74#  
if (data[j] < data[lowIndex]) { .i {yW  
lowIndex = j; 2TG2<wqvE  
} 1M.#7;#B3  
} 8.G<+.  
SortUtil.swap(data,i,lowIndex); $Zr \$z2  
} |}2/:f#Iz*  
} ?0'e_s  
a@Vk(3Rx_  
} <FX ]n<  
'qUM38s  
Shell排序: IL:[0q  
Oq$-*N  
package org.rut.util.algorithm.support; 6 .9C 4  
d~MY z6"  
import org.rut.util.algorithm.SortUtil; |"PS e~ u  
GSs?!BIC  
/** q:nUn?zB  
* @author treeroot 3ZC@q #R A  
* @since 2006-2-2 ,Ne9x\F  
* @version 1.0 (t){o> l  
*/ # > I_  
public class ShellSort implements SortUtil.Sort{ :@@`N_2?  
=jKu=!QPq  
/* (non-Javadoc) 15VvZ![$V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _u""v   
*/ ,na}' A@a`  
public void sort(int[] data) { yN)(MmX'1  
for(int i=data.length/2;i>2;i/=2){ )3A+Ell`  
for(int j=0;j insertSort(data,j,i); eIy:5/s  
} fs yVu|G  
} w_V A:]j4  
insertSort(data,0,1); s$zm)y5  
} Y4w]jIv  
Yn$: |$  
/** JB%_&gX)v  
* @param data MLlvsa0  
* @param j V FM!K$_  
* @param i Qn|8Ic` *  
*/ ~Ad2L*5S  
private void insertSort(int[] data, int start, int inc) { !4`:(G59  
int temp; }z#M!~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q>$lf.)  
} 1ni72iz\  
} urE7ZKdI  
} H5#]MOAP  
t*; KxQ+'?  
} am !ssF5s  
2D:,(  
快速排序: H)h^|A/vO  
BW6Ox=sr<  
package org.rut.util.algorithm.support; oOc-1C y  
Pwj|]0Y@  
import org.rut.util.algorithm.SortUtil; Q=>5@sZB  
J+Fev.9>  
/** j^;P=L0=  
* @author treeroot GqNOWK2O  
* @since 2006-2-2 "+4Jmf9  
* @version 1.0 00'SceL=`  
*/ ~(^pGL3<  
public class QuickSort implements SortUtil.Sort{ 6;\1bP?  
 0Gc:+c7{  
/* (non-Javadoc) YM#MfL#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wfe4b  
*/ w N`Nj m9!  
public void sort(int[] data) { ~\2%h lA  
quickSort(data,0,data.length-1); r~JGs?GH  
} )t3`O$J  
private void quickSort(int[] data,int i,int j){ C-)d@LWI  
int pivotIndex=(i+j)/2; PH&Qw2(Sx  
file://swap JWaWOk(t=?  
SortUtil.swap(data,pivotIndex,j); '^C *%"I]  
 Qe7=6<  
int k=partition(data,i-1,j,data[j]); mR1b.$  
SortUtil.swap(data,k,j); )A%* l9\nG  
if((k-i)>1) quickSort(data,i,k-1); IiRQ-,t1  
if((j-k)>1) quickSort(data,k+1,j); sV-P R]  
$T#fCx/  
} 5-ED\-  
/** {tl{ j1d |  
* @param data _ yJz:pa  
* @param i nS h~ mP  
* @param j SrB>_0**  
* @return 16]Ay&Kn!  
*/ +c!HXX  
private int partition(int[] data, int l, int r,int pivot) { V_ , `?>O  
do{ AX%}ip[PC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U^|T{g+O  
SortUtil.swap(data,l,r); AG}j'   
} fMUh\u3  
while(l SortUtil.swap(data,l,r); N8df1>mW  
return l; @k)J i!7  
} ybsw{[X>M  
t:V._@  
} N%>h>HJ  
F .Zk};lb  
改进后的快速排序: C>x)jDb?  
uF|_6~g  
package org.rut.util.algorithm.support; E9>z.vV   
ZO/Jf Jn~  
import org.rut.util.algorithm.SortUtil; %*!6R:gAp  
) 3"!Q+  
/** Q W,:'\G  
* @author treeroot VD@$y^!H  
* @since 2006-2-2 ]|PTZ1?j  
* @version 1.0 %qo.n v  
*/ LQr!0p.i"  
public class ImprovedQuickSort implements SortUtil.Sort { %AtT(G(n  
0&fO)de96  
private static int MAX_STACK_SIZE=4096; o6;  
private static int THRESHOLD=10; <QFayZ$  
/* (non-Javadoc) p`A2^FS)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #9r}Kr=P  
*/ GTTEg{  
public void sort(int[] data) { (B$>o.(JA  
int[] stack=new int[MAX_STACK_SIZE]; Y$"m*0  
xRgdU+,Mj  
int top=-1; I<sUB4T>#W  
int pivot; lb}RPvQE  
int pivotIndex,l,r; j!!s>7IZ  
0wNlt#G;{  
stack[++top]=0; mF~]P8  
stack[++top]=data.length-1; ]NBx5m+y@i  
B0gD4MX/  
while(top>0){ @iV-pJ-  
int j=stack[top--]; r<n:o7  
int i=stack[top--]; [t3 Kgjt  
rjWtioZEa  
pivotIndex=(i+j)/2; r,.j^a  
pivot=data[pivotIndex]; EATVce]T  
#oa>Z.?_V  
SortUtil.swap(data,pivotIndex,j); )\:IRr"  
r ~UDK]?V  
file://partition  )sdHJ  
l=i-1; >KP,67  
r=j; x=xo9wEg  
do{ o!~XYEXvUa  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4t }wMOR  
SortUtil.swap(data,l,r); *_YR*e0^nN  
} L5zCL0j`  
while(l SortUtil.swap(data,l,r); 0AffD:  
SortUtil.swap(data,l,j); <F&XT@  
o938!jML_  
if((l-i)>THRESHOLD){ `Rfe*oAf  
stack[++top]=i; 5NN;Fw+  
stack[++top]=l-1; (!5Pl`:j"  
} \/j,  
if((j-l)>THRESHOLD){ s+fxv(,"c  
stack[++top]=l+1; R!"|~OO  
stack[++top]=j; ,9jk<)m]L  
} "u4x#7n|  
QgYt(/S  
} hGrX,.zj  
file://new InsertSort().sort(data); WxO+cB+?  
insertSort(data); X>uLGr>  
} |O>e=HC#q8  
/** d7r!<u&/  
* @param data 5vR])T/S0  
*/ ;>6~}lMgJ  
private void insertSort(int[] data) { wE=I3E%  
int temp; f&^"[S"\f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DjN1EP\Xx  
} M\k[?i  
} u&S0  
} G;vj3#u?  
|4pl}:g/Z  
} ?qSwV.l]d  
tCO?<QBE  
归并排序: 1Dhe! n#  
VK*`&D<P  
package org.rut.util.algorithm.support; ke;=Vg|  
Z:AB (c  
import org.rut.util.algorithm.SortUtil; f'5 6IT  
nt()UC`5  
/** $MQ<QP  
* @author treeroot /{[<J<(8  
* @since 2006-2-2 {.e+?V2>_  
* @version 1.0 '/ \*l<  
*/ '&,p>aM  
public class MergeSort implements SortUtil.Sort{ ,9I-3**W  
Twd*HH  
/* (non-Javadoc) ?0KIM* .  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6la'\l#  
*/ yFmy  
public void sort(int[] data) { o^(I+<el  
int[] temp=new int[data.length]; uK(]@H7~!c  
mergeSort(data,temp,0,data.length-1); n CX{tqy   
} 6XZjZ*)W  
wy:Gy9\  
private void mergeSort(int[] data,int[] temp,int l,int r){ H?Sv6W.~  
int mid=(l+r)/2; m='}t \=  
if(l==r) return ; 3J 5,V  
mergeSort(data,temp,l,mid); 2!W[ff@~7  
mergeSort(data,temp,mid+1,r); -?1R l:rM  
for(int i=l;i<=r;i++){ .s4v*bng  
temp=data; +UX~'t_'v  
} &0bq3JGW  
int i1=l; )hQ]>o@i{  
int i2=mid+1; 3ww\Z8UeK  
for(int cur=l;cur<=r;cur++){ i4k [#x  
if(i1==mid+1) |1A0YjOD  
data[cur]=temp[i2++]; (*6 .-Xn  
else if(i2>r) Gukvd6-g9b  
data[cur]=temp[i1++]; 1Vz^?t:  
else if(temp[i1] data[cur]=temp[i1++]; EyU6^  
else i={4rZOD^  
data[cur]=temp[i2++]; oO3 ^9?Z  
} V;CRs\aYf  
} [$d]U.  
W" vkmk  
} k1yqe rA  
K$}K2w  
改进后的归并排序: >cmz JS  
7\yh(+kN  
package org.rut.util.algorithm.support; wVI_SQ<8V  
L ..  
import org.rut.util.algorithm.SortUtil; q&?hwX Z7  
r 20!   
/** <zTz/Hk`  
* @author treeroot r|uR!=*|?  
* @since 2006-2-2 XHKLl?-  
* @version 1.0 >)*d/^  
*/ BKI-Dh  
public class ImprovedMergeSort implements SortUtil.Sort { tQT<1Q02i  
1GkoE  
private static final int THRESHOLD = 10;  %rlqq*  
V,c^Vq y  
/* u^^jt(j  
* (non-Javadoc) *>[ q*SF  
* d { P$}b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k^;/@:  
*/ 'ta&qp  
public void sort(int[] data) { #pW!(tfN^a  
int[] temp=new int[data.length]; $}S0LZ_H  
mergeSort(data,temp,0,data.length-1); <Tbl |9  
} (yuOY/~k/  
@~7au9.V=X  
private void mergeSort(int[] data, int[] temp, int l, int r) { @Q nKaZ8jW  
int i, j, k; HL$7Ou  
int mid = (l + r) / 2; >Q"3dw  
if (l == r) ?kV_!2U)'K  
return; v5?)J91  
if ((mid - l) >= THRESHOLD) (Lj*FXmz  
mergeSort(data, temp, l, mid); #7:ah  
else W:wSM *  
insertSort(data, l, mid - l + 1); ${ DSH  
if ((r - mid) > THRESHOLD) n++ak\  
mergeSort(data, temp, mid + 1, r); x+'Ea.^  
else &IDT[J  
insertSort(data, mid + 1, r - mid); `RURC"  
{H9g&pfv  
for (i = l; i <= mid; i++) { h;#^?v!+  
temp = data; ?/@XJcm+  
} t(.vX  
for (j = 1; j <= r - mid; j++) { V5 9Vf[i|  
temp[r - j + 1] = data[j + mid]; Ag(JSVY  
} n >E1\($  
int a = temp[l]; `W1TqA  
int b = temp[r]; bng/v  
for (i = l, j = r, k = l; k <= r; k++) { `8\" 3S  
if (a < b) { \>j@! W  
data[k] = temp[i++]; |VyN>&r~6  
a = temp; 0oi.k;  
} else { wF6a*b@v  
data[k] = temp[j--]; n1R{[\ >1  
b = temp[j]; M[iWWCX  
} HuSE6an  
} O_ $zK  
} r`+G9sj3U  
s{Y-Vdx  
/** 4QiV@#o:  
* @param data g*4^HbVxt  
* @param l w; f LnEz_  
* @param i mv$gL  
*/ 8r0;054  
private void insertSort(int[] data, int start, int len) { L0%W;m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?AI`,*^  
} =gd~rk9  
} H:z<]Rc  
} bi-z%!Z  
} :F"NF  
nU2w\(3|  
堆排序: ^8?px&B y:  
8KdcU [w]  
package org.rut.util.algorithm.support; c47.,oTo  
CX5>/  
import org.rut.util.algorithm.SortUtil; A*]sN8  
JRtDjZ4>  
/** \y7\RV>>3b  
* @author treeroot iWe'|Br  
* @since 2006-2-2 ue!4By8T  
* @version 1.0 N{Pa&/V  
*/ ~ sWXd~\  
public class HeapSort implements SortUtil.Sort{ zrC1/%T  
$TAsb>W!(  
/* (non-Javadoc) /|v b)J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a72L%oJ   
*/ =%[vHQ\%  
public void sort(int[] data) { `w "ooK  
MaxHeap h=new MaxHeap(); {~Q}{ha  
h.init(data); 2 jxh7\zE  
for(int i=0;i h.remove(); jnFN{(VH  
System.arraycopy(h.queue,1,data,0,data.length); UH5A;SrTqR  
} z<cPy)F]"  
ySlGqR1H  
private static class MaxHeap{  6\QsK96_  
B6!ni@$M8X  
void init(int[] data){ `Q>qmf_Fi  
this.queue=new int[data.length+1]; ExOSHKU,e  
for(int i=0;i queue[++size]=data; Z?eedVV@  
fixUp(size); iYr*0:M  
} ]==S?_.B3n  
} {'?PGk%v  
97}l`z;Z  
private int size=0; .&KC2#4   
uUv^]B 8GM  
private int[] queue; +\cG{n*  
t6%zfm   
public int get() { ;s$ P?('  
return queue[1]; 'H1k  
} ^/$U(4  
kNrd=s,-]D  
public void remove() { '@5"p.  
SortUtil.swap(queue,1,size--); CL!s #w1I\  
fixDown(1); *Oh]I|?  
} FaG&U  
file://fixdown Yjx4H  
private void fixDown(int k) { [ofZ1hB4  
int j; S$GWY^5}{  
while ((j = k << 1) <= size) { q9$K.=_5  
if (j < size %26amp;%26amp; queue[j] j++; O F?o  
if (queue[k]>queue[j]) file://不用交换 i6:O9Km  
break; % hRH80W|  
SortUtil.swap(queue,j,k); 0(^ N  
k = j; DC'L-]#<  
} lMjeq.5nP  
} XK@Ct eP"  
private void fixUp(int k) { fvV5G,lD3h  
while (k > 1) { [85tZr]  
int j = k >> 1; TA"gU8YQ  
if (queue[j]>queue[k]) zi+NQOhR  
break; zm=|#f  
SortUtil.swap(queue,j,k); }Y3*X: i7  
k = j; j<d,7  
} 3'tq`t:SQ  
} %Lfy!]Ru  
FOSC#W9E  
}  4{D^ 4G  
}^*m0`H  
} "bvob G  
FN D+Ok&  
SortUtil: )1Z @}o 9  
PED5>90  
package org.rut.util.algorithm; Xcci)",!  
3 E!F8GZ  
import org.rut.util.algorithm.support.BubbleSort; -) !;45  
import org.rut.util.algorithm.support.HeapSort; $gaGaB  
import org.rut.util.algorithm.support.ImprovedMergeSort; F<Z13]|  
import org.rut.util.algorithm.support.ImprovedQuickSort; &MJ`rj[%  
import org.rut.util.algorithm.support.InsertSort; cIXqnb  
import org.rut.util.algorithm.support.MergeSort; D4U<Rn6N_5  
import org.rut.util.algorithm.support.QuickSort; Lz`_&&6  
import org.rut.util.algorithm.support.SelectionSort; /k=k rAz.  
import org.rut.util.algorithm.support.ShellSort; U{8x.CJ]  
O7zj8  
/** &nwk]+,0W#  
* @author treeroot Qa,$_ ,E  
* @since 2006-2-2 Ihx[S!:  
* @version 1.0 6@ =ipPCR  
*/ zB#.EW  
public class SortUtil { kntULI$`  
public final static int INSERT = 1; .-.b:gdO(  
public final static int BUBBLE = 2; Qsr+f~"W  
public final static int SELECTION = 3; Ew&|!d  
public final static int SHELL = 4; 7G  3e  
public final static int QUICK = 5; GBGna3  
public final static int IMPROVED_QUICK = 6; kC/An@J^#  
public final static int MERGE = 7; N=c{@h  
public final static int IMPROVED_MERGE = 8; PS`F  
public final static int HEAP = 9; F)=*Ga  
eVGW4b  
public static void sort(int[] data) { He}"e&K  
sort(data, IMPROVED_QUICK); 9PJnKzQ4  
} <l$ vnq  
private static String[] name={ D #C\| E:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Twpk@2=l  
}; (4FZK7Fm  
4+F@BxpB  
private static Sort[] impl=new Sort[]{ C@@PLsMg  
new InsertSort(), ;H"OZRQ  
new BubbleSort(), 8,]wOxwqi  
new SelectionSort(), qDjH^f  
new ShellSort(), 4\14HcTcK  
new QuickSort(), *!`bC@E  
new ImprovedQuickSort(), R{{?wr6b$  
new MergeSort(), #[y2nK3zF  
new ImprovedMergeSort(), e J:#vX86  
new HeapSort() 8n/[oDc]  
}; r ['zp=9  
)wk9(|[o  
public static String toString(int algorithm){ 0MN)Z(Sa  
return name[algorithm-1]; Gc<^ b  
} M0woJt[&  
MG3xX;  
public static void sort(int[] data, int algorithm) { 9&1$\ZH  
impl[algorithm-1].sort(data); xhncQhf\  
} gg$:U  
>,n K  
public static interface Sort { 1c:/c|shQ_  
public void sort(int[] data); 2\G[U#~bi  
} "2`/mt Mon  
|O[ I=!  
public static void swap(int[] data, int i, int j) { 9zaSA,}  
int temp = data; eyG[1EEU  
data = data[j]; }XRRM:B|)(  
data[j] = temp; ab*O7v  
} {N@tJ,Fh{  
} l/56;f\IA  
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