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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。 l?N`{ ,1^  
插入排序: ]o.vB}WsY  
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package org.rut.util.algorithm.support; 5vp|?-\h>  
D=?{8'R'  
import org.rut.util.algorithm.SortUtil; =fLL|  
/** >mu)/kl  
* @author treeroot kN9yO5 h7  
* @since 2006-2-2 <)m%*9{  
* @version 1.0 /9ZcM]X B  
*/ `_AM` >_  
public class InsertSort implements SortUtil.Sort{ :Z`4j  
^tAO_~4  
/* (non-Javadoc) e=f.y<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rnhFqNT:  
*/ QEJGnl676  
public void sort(int[] data) { a<Uqyilm  
int temp; DQ6jT@ZDH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'w<BJTQIL  
} M-9gD[m  
} d+2daKi  
} ~uaP$*B[  
@ RR\lZ  
} vE\lp8j+  
q(]f]Vl|0  
冒泡排序: L'kq>1QWf  
r2eQ{u{nX  
package org.rut.util.algorithm.support; mBl7{w;Iv  
=& U`9qN  
import org.rut.util.algorithm.SortUtil; |qUrEGjiSS  
mN1Ssq"B  
/** +uQB rG  
* @author treeroot |HbEk[?^s  
* @since 2006-2-2 av'*u  
* @version 1.0 Wc'Ehyi;  
*/ vZjZb(jlN  
public class BubbleSort implements SortUtil.Sort{ : }?{@#Z  
ZlR!s!vv  
/* (non-Javadoc) Aka^e\Y@6*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) womq^h6  
*/ R_e)mkE  
public void sort(int[] data) { g()m/KS<  
int temp; xPQL?.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R{3CW^1  
if(data[j] SortUtil.swap(data,j,j-1); bEpMaBN  
} J/Q|uRpmqr  
} j7/(sf  
} "bX4Q4Dq  
} |-kEGLH[*V  
jxY-u+B  
} b7$}JCn  
U6{dI@|B  
选择排序: 4;<DJ.XlN=  
h5onRa *7  
package org.rut.util.algorithm.support; pMN<p[MB  
|~$7X  
import org.rut.util.algorithm.SortUtil; hZuYdV{'h  
- V=arm\#z  
/** M\UWWb&%\  
* @author treeroot "{F;M{h$},  
* @since 2006-2-2 'Z7P  
* @version 1.0 9*_uCPR  
*/ 1%eLs=u?  
public class SelectionSort implements SortUtil.Sort { /yYlu  
xH$%5@~  
/* T-P@u-DU  
* (non-Javadoc) T T"3^@  
* 8XbR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2LhE]O(_"  
*/ QkX@QQ T?  
public void sort(int[] data) { Kym:J \}9B  
int temp; [X|OrRA  
for (int i = 0; i < data.length; i++) { FmA-OqEpA  
int lowIndex = i; wo(j}O-  
for (int j = data.length - 1; j > i; j--) { ^Kw(& v  
if (data[j] < data[lowIndex]) { q3\!$IM.  
lowIndex = j; \{>eOD_  
} iEhDaC[e(b  
} Yq;&F0paK  
SortUtil.swap(data,i,lowIndex); MVAc8dS  
} ,k%8yK  
} nHU3%%%cU  
 y h-9u  
} >4'21,q  
VRhRwdC  
Shell排序: 8|<f8Z65!  
P%!q1`Eke(  
package org.rut.util.algorithm.support; )dg UmN  
0*{p Oe/u  
import org.rut.util.algorithm.SortUtil; ):E'`ZP!F  
$K=z  
/** S ljZ~x,!  
* @author treeroot mh8nlB  
* @since 2006-2-2 X,53c$  
* @version 1.0 t^$Div_%G  
*/ g.&\6^)8p  
public class ShellSort implements SortUtil.Sort{ S A3Y:(  
j&}B<f _6J  
/* (non-Javadoc) ^V,@=QL3U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q_5 8Lw  
*/ ST4(|K  
public void sort(int[] data) { Vx(;|/:  
for(int i=data.length/2;i>2;i/=2){ !L$oAqW  
for(int j=0;j insertSort(data,j,i); =0Y'f](2eW  
} <w11nB)  
} ~$ WQ"~z  
insertSort(data,0,1); 9oD#t~+F4  
} 1 ' %-y  
_ ^3@PM>  
/** KqY>4tb  
* @param data |Kn^w4mN  
* @param j cFxSDTR  
* @param i bl9E&B/  
*/ G[B*TM6$  
private void insertSort(int[] data, int start, int inc) { Faw. GU  
int temp; Q }8C  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); nTQ (JDf  
} &`5 :G LV  
} >,w P! ;dh  
} x k#*=  
v_.j/2U  
} T/3;NXe6E  
'Sk6U]E~  
快速排序: #|D:f~"d3  
:if5z2PE/  
package org.rut.util.algorithm.support; EkV!hqs*  
l?N`V2SuR  
import org.rut.util.algorithm.SortUtil; o}W7.7^2  
L/%xbm~  
/** C890+(D~  
* @author treeroot E<P*QZ-C3  
* @since 2006-2-2 4t(QvIydA  
* @version 1.0 *xho  
*/ 0MhxFoFO  
public class QuickSort implements SortUtil.Sort{ J2x$uO{Bn  
akY6D]M  
/* (non-Javadoc) -hm 9sNox  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t"FRLC  
*/ }8X:?S %  
public void sort(int[] data) { +0)5H>h  
quickSort(data,0,data.length-1); {S# 5g2  
} ; vhnA$'a  
private void quickSort(int[] data,int i,int j){ ob)D{4B'  
int pivotIndex=(i+j)/2; $jDD0<F.#  
file://swap Zj5NWzj X  
SortUtil.swap(data,pivotIndex,j); pzYG?9cwz  
!vi4* @:  
int k=partition(data,i-1,j,data[j]); M|aQ)ivh3  
SortUtil.swap(data,k,j); J\9jsx!WQ  
if((k-i)>1) quickSort(data,i,k-1); `_6@3-%  
if((j-k)>1) quickSort(data,k+1,j); a:wJ/ p  
+2f> M4q  
} l %]<-  
/** g!z8oPT  
* @param data J78Qj[v  
* @param i }:tAKO=+  
* @param j 1Z=;Uy\  
* @return zbdOCfA;  
*/ UeC 81*XZ  
private int partition(int[] data, int l, int r,int pivot) { LjX&' ,  
do{ N>h]mX6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1j8/4:  
SortUtil.swap(data,l,r); Cf.WO%?P  
} thR|h+B  
while(l SortUtil.swap(data,l,r); pPU2ar  
return l; +lW+H12  
} ,(zcl$A[  
 U5T^S  
} ..sJtA8  
K>`m_M"LA  
改进后的快速排序: !;6W!%t.|  
$=X!nQ& Z|  
package org.rut.util.algorithm.support; @faF`8LwA  
=/)Mc@Hb  
import org.rut.util.algorithm.SortUtil; *(>F'>F1"  
8yNRx iW:  
/** Z{j!s6Y@{  
* @author treeroot Iht mD@H}  
* @since 2006-2-2 4"`=huQ  
* @version 1.0 GA}hp%  
*/ kjQIagw  
public class ImprovedQuickSort implements SortUtil.Sort { })Ix .!p  
eU<]h>2  
private static int MAX_STACK_SIZE=4096; w/)e2CH  
private static int THRESHOLD=10; ;w>Q{z  
/* (non-Javadoc) KI^q 5D ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @*AYm-k  
*/ B`t)rBy  
public void sort(int[] data) { 0EF,uRb  
int[] stack=new int[MAX_STACK_SIZE]; S8rW'}XJ=H  
89?3,k  
int top=-1; `XFX`1  
int pivot; ~{kA) :  
int pivotIndex,l,r; >& 4I.nA  
PkZf(=-X  
stack[++top]=0; W\ZV0T;<]  
stack[++top]=data.length-1; lUy*549,  
_Y:Ja0,  
while(top>0){ 2\kC_o97  
int j=stack[top--]; bs4fyb  
int i=stack[top--]; yAZ.L/jyr  
+"*l2E]5  
pivotIndex=(i+j)/2; e%5'(V-y,  
pivot=data[pivotIndex]; rVc zO+E  
rZwf%}  
SortUtil.swap(data,pivotIndex,j); {g23[$X]N  
wjw<@A9  
file://partition ` :B  
l=i-1; PAO[Og,-  
r=j; ^+Y-=2u:  
do{ ".Q!8j"@f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~ Iu21Q(*  
SortUtil.swap(data,l,r); 3e!a>Gl*  
} vi()1LS/!  
while(l SortUtil.swap(data,l,r); \I`=JKYT  
SortUtil.swap(data,l,j); fTi{oY,zTg  
A(_^_p.|  
if((l-i)>THRESHOLD){ HnYFE@Nl:U  
stack[++top]=i; N";dG 3  
stack[++top]=l-1; Wtzj;GJj  
} GXAk*vS=G  
if((j-l)>THRESHOLD){ 1zEZ\G  
stack[++top]=l+1; nP3;<*T P0  
stack[++top]=j; MSm`4lw  
} p.W*j^';Q  
Ty,)mx){)  
}  6@Z'fT4  
file://new InsertSort().sort(data); M}KM]<  
insertSort(data); JQVw6*u{  
} :6Pc m3  
/** s poWdRM2  
* @param data 6XxG1]84  
*/ .]sIoB-54  
private void insertSort(int[] data) { +e3WwUx  
int temp; DJ2]NA$Q*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O|7{%5h  
} Lw+1|  
}  lN`_0  
} 9'*ZEl^?D  
:pF]TY"K.  
} d ;7pri)B  
FsPDWy&x  
归并排序: g:3'x/a1  
meVVRFQ2+  
package org.rut.util.algorithm.support; Hpo?|;3D5  
:,z3 :PL  
import org.rut.util.algorithm.SortUtil; oTV8rG  
}.|5S+J?[  
/** LkZo/K~  
* @author treeroot ^@5ui;JV  
* @since 2006-2-2 ~1]2A[`s!  
* @version 1.0 Sph"w08  
*/ s2v#evI`+  
public class MergeSort implements SortUtil.Sort{ Kac j  
j{w,<Wt>  
/* (non-Javadoc) +(P 43XO08  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C.e|VzQa  
*/ }ok nB  
public void sort(int[] data) { !m:PBl5  
int[] temp=new int[data.length]; \t(r@q q  
mergeSort(data,temp,0,data.length-1); hv8[_p`>  
} {$TB#=G  
J ]^gF|  
private void mergeSort(int[] data,int[] temp,int l,int r){ GTIfrqT  
int mid=(l+r)/2; 8\V>6^3CD$  
if(l==r) return ; PdN\0B `  
mergeSort(data,temp,l,mid); <7-,`   
mergeSort(data,temp,mid+1,r); f<U m2YGW  
for(int i=l;i<=r;i++){ ~U*N'>'=)  
temp=data; 714nUA872  
} MdboWE5i  
int i1=l; -:p1gg&  
int i2=mid+1; S^`9[$KH0  
for(int cur=l;cur<=r;cur++){ &EJ,k'7$  
if(i1==mid+1) GZ[h`FJg/  
data[cur]=temp[i2++]; ^V,/4u  
else if(i2>r) `lh?Z3W  
data[cur]=temp[i1++]; ;Kb[UZ1  
else if(temp[i1] data[cur]=temp[i1++]; L , Fso./y  
else n ~i4yn=  
data[cur]=temp[i2++]; VP[!ji9P   
} %c2i.E/G  
} AS"|r  
J0mCWtx&  
} m]}"FMH$  
G:ngio]G0  
改进后的归并排序: ~{$'sp0  
>5:e1a?9  
package org.rut.util.algorithm.support; :+^llz  
'wq:F?viF  
import org.rut.util.algorithm.SortUtil; +~.Jw#HqS  
ZoReyY2  
/** ddhTr i'f  
* @author treeroot 3evfX[V#  
* @since 2006-2-2 \gv x)S11  
* @version 1.0 ?o'arxCxZn  
*/ qc"/T16M]  
public class ImprovedMergeSort implements SortUtil.Sort { yVv3S[J  
OWfj<#}t+  
private static final int THRESHOLD = 10; `;2`H, G'  
Xn'>k[}<k  
/* 19`0)pzZ*P  
* (non-Javadoc) JN-8\ L  
* U*h)nc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \eN/fTPm  
*/ 0DT2qM[,  
public void sort(int[] data) { Px&Mi:4tG  
int[] temp=new int[data.length]; boB{Y7gO4  
mergeSort(data,temp,0,data.length-1); mU>* NP(L  
} kakWXGeR  
j=QjvWD  
private void mergeSort(int[] data, int[] temp, int l, int r) { /`@>v$oo  
int i, j, k; Fpwh.R:yV  
int mid = (l + r) / 2; S$/3Kq  
if (l == r) t^;Fq{>  
return; SntYi0,`  
if ((mid - l) >= THRESHOLD) tV4aUve  
mergeSort(data, temp, l, mid); 5R G5uH/-<  
else hrt-<7U  
insertSort(data, l, mid - l + 1); u#|Jl|aT  
if ((r - mid) > THRESHOLD) l(4./M  
mergeSort(data, temp, mid + 1, r); ,Gx=e!-N5  
else "g[UX{L  
insertSort(data, mid + 1, r - mid); _I5+o\;1  
xF+x I6  
for (i = l; i <= mid; i++) { BEx^IQ2  
temp = data; - & r{%7  
} 9DE)5/c`v  
for (j = 1; j <= r - mid; j++) { R;2 -/MT-  
temp[r - j + 1] = data[j + mid]; 7Wn]l!  
} r5wXuA,Um  
int a = temp[l]; %z(=GcWm  
int b = temp[r]; X/749"23  
for (i = l, j = r, k = l; k <= r; k++) { 7s3<}  
if (a < b) { Nuq/_x  
data[k] = temp[i++]; XL9lB#v^  
a = temp; a8$pc>2E  
} else { 7J/3O[2  
data[k] = temp[j--]; j'n= Xh  
b = temp[j]; .?:~s8kB  
} }1 ^.A84a  
} ~;Kl/Z  
} IW*.B6Hw8  
.p_$]  
/** ![jP)WgF  
* @param data v 0H#\p  
* @param l -3 Hq1  
* @param i Mpx.n]O.  
*/ xoaQ5u  
private void insertSort(int[] data, int start, int len) {  JwcP[w2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !1R  
} <{uIB;P  
} YdaJ&  
} Vtri"G8 aB  
} !I&Sy]G  
YgDasKFm'  
堆排序: z"`?<A&u  
yRDLg c  
package org.rut.util.algorithm.support; VvKH]>*  
`#U6`[[  
import org.rut.util.algorithm.SortUtil; +__Rk1CVh  
f#mpd]e+6  
/** -XB>&dNl)T  
* @author treeroot z ZQoY_UI  
* @since 2006-2-2 KQ3 On(d  
* @version 1.0 wS4wED&a  
*/ \3/'#  
public class HeapSort implements SortUtil.Sort{ .jw)e!<\N  
=Y0m;-1M  
/* (non-Javadoc) MvFXVCT#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RR|Eqm3)  
*/ .EQFHStr  
public void sort(int[] data) { Mt>DAk  
MaxHeap h=new MaxHeap(); o}z}79Z  
h.init(data); U>XGJQ<NS  
for(int i=0;i h.remove(); $4pW#4/4  
System.arraycopy(h.queue,1,data,0,data.length); 8Qh/=Ir  
} C54)eT6  
f [D#QC  
private static class MaxHeap{ !$HWUxM;p  
huIr*)r&p  
void init(int[] data){ l?~h_8&fT  
this.queue=new int[data.length+1]; ptcU_*Gd  
for(int i=0;i queue[++size]=data; {[+gM?  
fixUp(size); LtBH4 A  
} B^{DCHu/  
} sYzG_* )  
&V L<Rx  
private int size=0; .Pi67Kj,  
>Ko )Z&j9W  
private int[] queue; rYJvI  
I uDk9<[b:  
public int get() { $oEDyC  
return queue[1]; >KJ]\`2>)c  
} gMbvHlT  
Z[VKB3Pb8  
public void remove() { g@L4G?hLn  
SortUtil.swap(queue,1,size--); (Lp-3Xx  
fixDown(1); ;DTNw=  
} <Jx{Uv  
file://fixdown "O`;zC  
private void fixDown(int k) { ?W(f%/B#  
int j; yLP0w^Q  
while ((j = k << 1) <= size) { M<729M  
if (j < size %26amp;%26amp; queue[j] j++; IP3-lru  
if (queue[k]>queue[j]) file://不用交换 yY+2;`CH  
break; 6-~  
SortUtil.swap(queue,j,k); "?!IPX2\S  
k = j; b8Qm4b?:4  
} ~oI49Q&{  
} /zWWUl`:  
private void fixUp(int k) { +-"#GL~cC  
while (k > 1) { v|xlI4  
int j = k >> 1; VO9<:R  
if (queue[j]>queue[k]) T7v8}_"-  
break; !Zrvko  
SortUtil.swap(queue,j,k); @fw U%S[v  
k = j; , F[mh  
} VF-d^AGt  
} h$!qb'|  
vR,'':  
} =%p"oj]:  
O Rfl v+  
} m H?hzxa+  
sk5\"jna  
SortUtil: ~ 0[K%]]  
H|^4e   
package org.rut.util.algorithm; yDKX,  
C" sa.#}  
import org.rut.util.algorithm.support.BubbleSort; OV[-m;h|  
import org.rut.util.algorithm.support.HeapSort; U+ 8[Ia(t  
import org.rut.util.algorithm.support.ImprovedMergeSort; yP-Dj ,  
import org.rut.util.algorithm.support.ImprovedQuickSort; oeIS&O.K  
import org.rut.util.algorithm.support.InsertSort; B[$e;h*Aw[  
import org.rut.util.algorithm.support.MergeSort; Mf *qr9*  
import org.rut.util.algorithm.support.QuickSort; BK +JHT  
import org.rut.util.algorithm.support.SelectionSort; P$Dr6;  
import org.rut.util.algorithm.support.ShellSort; k4@GjO1"$  
e D}Ga4  
/** vD(;VeW[  
* @author treeroot ql8:s>1T  
* @since 2006-2-2 r}991O<  
* @version 1.0 5 xiYCOy  
*/ o 2DnkzpJ  
public class SortUtil { 2|cIu 'U  
public final static int INSERT = 1; QhZ%<zN  
public final static int BUBBLE = 2; <D=%5 5  
public final static int SELECTION = 3; ua{eri[  
public final static int SHELL = 4; ka5>9E  
public final static int QUICK = 5; 83dOSS2  
public final static int IMPROVED_QUICK = 6; $&4Zw6"=  
public final static int MERGE = 7; ILQg@J l  
public final static int IMPROVED_MERGE = 8; C /E3NL8  
public final static int HEAP = 9; HqbTJ!a  
$lv  g.u  
public static void sort(int[] data) { LC}]6  
sort(data, IMPROVED_QUICK); <ZocMv9gM  
} xW09k6   
private static String[] name={ E>ev/6ox  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u]}Xq{ZN  
}; rUyT5Vf  
X0lIeGwrQ  
private static Sort[] impl=new Sort[]{ Uq&|iB#mF  
new InsertSort(), ^^[,aBu  
new BubbleSort(), +EFur dX\  
new SelectionSort(), %jkd}D  
new ShellSort(), 3w-0v"j U  
new QuickSort(), c{E-4PYbah  
new ImprovedQuickSort(), rF5<x3  
new MergeSort(), EH[?*>+s  
new ImprovedMergeSort(), c"| ^Lo.  
new HeapSort() vEb~QX0~  
}; S-1}3T%  
)S`A+M K]  
public static String toString(int algorithm){ v\<`"  
return name[algorithm-1]; :c6%;2  
} fN&O `T>  
?{FxbDp>  
public static void sort(int[] data, int algorithm) { ;[|x5o /<  
impl[algorithm-1].sort(data); gcz1*3)  
} ;zGGT^Dn  
{!,+C0  
public static interface Sort { F'"-4YV>&  
public void sort(int[] data); 3(CUC  
} ^awl-CG  
T"2ye9a  
public static void swap(int[] data, int i, int j) { 6=zme6D  
int temp = data; IX3r$}4  
data = data[j]; g'IS8@  
data[j] = temp; * "E]^wCn  
} is6JS^Q  
} KJ-D|N,8@^  
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