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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。 j0F& WKk  
插入排序: K7$Q .  
MB5V$toC  
package org.rut.util.algorithm.support; M~X~2`fFH  
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import org.rut.util.algorithm.SortUtil; amQiH!}8R  
/** )-6>!6hZ  
* @author treeroot lq 1223  
* @since 2006-2-2 daB 5E<?  
* @version 1.0 *Qngx  
*/ YY>&R'3[  
public class InsertSort implements SortUtil.Sort{ #BEXj<m+J  
G=Xas"|  
/* (non-Javadoc) Nog{w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <e|B7<.  
*/ .F/l$4CQ  
public void sort(int[] data) { (e 2.Ru  
int temp; .<K9Zyi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SQ/}K8uZ  
} x {R j2~KC  
} W$}2 $}r0U  
} P=ubCS'  
m9'bDyyK  
} 3D,tnn+J  
S>[&]  
冒泡排序: nS!m1&DeD  
C]zG@O !  
package org.rut.util.algorithm.support; DI :  
PywUPsJ  
import org.rut.util.algorithm.SortUtil; C;Kq_/l  
 L$]Y$yv  
/** Z1\=d=  
* @author treeroot =EHKu|rX~  
* @since 2006-2-2 _bCIVf`  
* @version 1.0 B I>r'  
*/ _k)EqPYu@  
public class BubbleSort implements SortUtil.Sort{ L3S29-T  
LD;! s  
/* (non-Javadoc) m.yt?`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u~'j?K.^  
*/ aqP"Y9l  
public void sort(int[] data) { dY?>:ce  
int temp; [WR*u\FF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qwuA[QkPi  
if(data[j] SortUtil.swap(data,j,j-1); wem hP8!gc  
} K &G  
} U uSCqI};  
} iT~ gt/K  
} aslb^  
fc^d3wH0L  
} "2 qivJ  
NV18~5#</  
选择排序: mN" g~o*  
1[(/{CClB  
package org.rut.util.algorithm.support; WQNFHRfO*n  
KhNE_. Z  
import org.rut.util.algorithm.SortUtil; z| m-nIM  
5Noy~;  
/** ^B'N\[  
* @author treeroot WHR6/H  
* @since 2006-2-2 .#Lu/w' -M  
* @version 1.0 Wl{}>F`W[  
*/ 6P`!yBAu  
public class SelectionSort implements SortUtil.Sort { _3m\r*(vmQ  
M^y5 Dep  
/* ej]>*n  
* (non-Javadoc)  rUBc5@|  
* _sqV@ J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iRI7x)^0"z  
*/ }\.Z{h:t ?  
public void sort(int[] data) { . L]!*  
int temp; n{z!L-x^b  
for (int i = 0; i < data.length; i++) { 4u]>$?X1_  
int lowIndex = i; 6;}W)S  
for (int j = data.length - 1; j > i; j--) { cG4$)q;q  
if (data[j] < data[lowIndex]) { &}b-aAt  
lowIndex = j; I~>Ye<g#  
} IUwMIHq&sW  
} Ehg(xK  
SortUtil.swap(data,i,lowIndex); w4;1 ('  
} :cE~\B S&  
} -h#9sl->  
O`'r:&#W  
} K7] +. f  
]|K@0,  
Shell排序: hdy N   
Y~-P9   
package org.rut.util.algorithm.support; fqD1Ej  
? VHOh9|AT  
import org.rut.util.algorithm.SortUtil; Nr0}*8#j  
p7]V1w:  
/** 7Ezy-x2h  
* @author treeroot m7.6;k.  
* @since 2006-2-2 ,I8[tiR"b  
* @version 1.0 F@kd[>/[  
*/ 7G &I]>  
public class ShellSort implements SortUtil.Sort{ 0tp3mYd  
7eQc14  
/* (non-Javadoc) %j2ZQ/z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tj,1]_`=V$  
*/ L [=JHW  
public void sort(int[] data) { .WT ar9e#  
for(int i=data.length/2;i>2;i/=2){ 5YnTGf&  
for(int j=0;j insertSort(data,j,i); okQ<_1e{  
} (2p<I)t  
} <~-cp61z;  
insertSort(data,0,1); _*LgpZ-2(  
} si`h(VD9w  
,p[9EW*8  
/** #^eXnhj9  
* @param data ^Qa!{9o[  
* @param j y-#01Z  
* @param i ;]sbz4?  
*/ /zZ";4  
private void insertSort(int[] data, int start, int inc) { 2(K@V6j$M  
int temp; jP"l5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2s<uT  
} /{*0 \`;  
} T~- OC0  
} pkT26)aW  
"=3bL>\<  
} Hw 1cc3!  
qB8R4wCf  
快速排序: E7>D:BQ\2  
#Zt(g(T  
package org.rut.util.algorithm.support; /YT _~q=:  
_ 2E*  
import org.rut.util.algorithm.SortUtil; ?5jq)xd2  
:*dfP/GO  
/** uo[W|Q  
* @author treeroot PiZU _~A  
* @since 2006-2-2 vG'I|OWg  
* @version 1.0 SVJt= M  
*/ rs+ ["h  
public class QuickSort implements SortUtil.Sort{ )H| cri~D  
t?;\'  
/* (non-Javadoc) G"D=ozr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vj hh4$k  
*/ &$8YW]1M  
public void sort(int[] data) { %8$ldNhV  
quickSort(data,0,data.length-1); m*H' Cb  
} /YHAU5N/}  
private void quickSort(int[] data,int i,int j){ c01i !XS  
int pivotIndex=(i+j)/2; SKeX~uLz  
file://swap E2u9>m4_J  
SortUtil.swap(data,pivotIndex,j); lNba[;_  
f S-PM3  
int k=partition(data,i-1,j,data[j]); J`xCd/G  
SortUtil.swap(data,k,j); t5;)<N`  
if((k-i)>1) quickSort(data,i,k-1); p`/c&}  
if((j-k)>1) quickSort(data,k+1,j); U2vM|7 ]VP  
3:"w"0[K3  
} p4^&G/'  
/** 20?@t.aMp  
* @param data 7-A/2/G<  
* @param i 0I['UL^!F  
* @param j #b wGDF  
* @return HvLx  
*/ EaKbG>  
private int partition(int[] data, int l, int r,int pivot) { am+w<NJ(us  
do{ 7ro&Q%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IaT\ymm`  
SortUtil.swap(data,l,r); uZe"M(3r$  
} hI 1or4V  
while(l SortUtil.swap(data,l,r); TE% i   
return l; N~~ sM"n  
} 3*=_vl3  
,)M/mG?,  
} 8F9x2CM-[C  
qPoN 8>.  
改进后的快速排序: YF)k0bu&;  
5 BLAa1  
package org.rut.util.algorithm.support; c<,R,D R  
 ) fQ1U  
import org.rut.util.algorithm.SortUtil; l 1vI  
X^Fc^U8  
/** kgh0  
* @author treeroot 6/6{69tnr  
* @since 2006-2-2 FxmHy{JG  
* @version 1.0 F-Bj  
*/ 1pAcaJzf  
public class ImprovedQuickSort implements SortUtil.Sort { ksf6O$  
xVk5%  
private static int MAX_STACK_SIZE=4096; '0w</g  
private static int THRESHOLD=10; uHq;z{ 2GI  
/* (non-Javadoc) -2'1KAk-W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SHT`  
*/ HD'adj_,  
public void sort(int[] data) { @FZbp  
int[] stack=new int[MAX_STACK_SIZE]; 0Wj,=9q  
=0a z5td  
int top=-1; 25 cJA4  
int pivot; |DYgc$2pN  
int pivotIndex,l,r; \q\"=  
ZUkM8M$c  
stack[++top]=0; 0 9qfnQG  
stack[++top]=data.length-1; -^3uQa<zN^  
!jvl"+_FV  
while(top>0){ ST2:&xH(  
int j=stack[top--]; O?ODfO+>  
int i=stack[top--]; Kq5i8L=u  
&(lQgi+^!  
pivotIndex=(i+j)/2; >#)%/Ti}DU  
pivot=data[pivotIndex]; @]!9;?so  
l(W?]{C[%  
SortUtil.swap(data,pivotIndex,j); 9kh MG$  
1nw\?r2  
file://partition 70'gVCb  
l=i-1; Zrp-Hv27,,  
r=j; 2Z5_@Y  
do{ w{t]^w:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #^BttI  
SortUtil.swap(data,l,r); JfY(};&  
} ':3[?d1Es  
while(l SortUtil.swap(data,l,r); Q :.i[  
SortUtil.swap(data,l,j); KaX*) P  
:dpwr9)  
if((l-i)>THRESHOLD){ TW|- 0  
stack[++top]=i; S}a]Bt  
stack[++top]=l-1; k>\v]&|T`  
} mz+UkA'  
if((j-l)>THRESHOLD){ lXZ*Pb<j  
stack[++top]=l+1; ,i1BoG  
stack[++top]=j; %`QgG   
} k~gOL#$  
f%i%QZP  
} MB7*AA;  
file://new InsertSort().sort(data); wZN_YFwQ  
insertSort(data); }Z{FPW.QK  
} #lg R"%  
/** 7BL)FJ]UR]  
* @param data Y SB=n d_  
*/ c#>(8#'.U  
private void insertSort(int[] data) { Q4hY\\Hi  
int temp; hlDB'8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !\[JWN@v  
} r~2hTie  
} =JW-EQ6[T  
} ZX64kk+  
NPrLM5  
} O$}.b=N9  
9^ZtbmUf  
归并排序: mLpM8~L  
~D>pu%F  
package org.rut.util.algorithm.support; } c k <R  
%T\hL\L?  
import org.rut.util.algorithm.SortUtil; &b`W<PAc?4  
A+gS'DZ9C  
/** IhBc/.&RL  
* @author treeroot q[C?1Kc .z  
* @since 2006-2-2 g_`a_0v  
* @version 1.0 * 70 ZAo4  
*/ mHHlm<?]  
public class MergeSort implements SortUtil.Sort{ RG""/x ;  
8\!E )M|4  
/* (non-Javadoc) P3: t 4^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DrkTM<  
*/ a!E22k?((z  
public void sort(int[] data) { iGu%_-S  
int[] temp=new int[data.length]; vM6W64S  
mergeSort(data,temp,0,data.length-1); m;]wKd"  
} UJSIbb5  
@;tfHoXD  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,`Y$}"M4  
int mid=(l+r)/2; j}eb _K+I  
if(l==r) return ; w+R7NFq  
mergeSort(data,temp,l,mid); +q '1P}e  
mergeSort(data,temp,mid+1,r); 5EcVW|(  
for(int i=l;i<=r;i++){ f4b9o[,s2e  
temp=data; z'_Fg0kR{  
} o~IAZU39  
int i1=l; Rbf6/C  
int i2=mid+1; hc[ K VLpS  
for(int cur=l;cur<=r;cur++){ xBVOIc[4(  
if(i1==mid+1) &Y=0 0  
data[cur]=temp[i2++]; P,{Q k~iu  
else if(i2>r) < ,*\t  
data[cur]=temp[i1++]; ?gl&q+mv  
else if(temp[i1] data[cur]=temp[i1++]; 3W%6n-*u  
else "mW'tm1+  
data[cur]=temp[i2++]; >8"Svt$  
} &,k!,<IF  
} vTO9XHc E  
4SJ aAeIZ  
} jU j\<aW  
N3|:MMl  
改进后的归并排序: q>.7VN[ vE  
-[L\:'Gp5  
package org.rut.util.algorithm.support; Ak9{P`  
%Hbq3U30  
import org.rut.util.algorithm.SortUtil; Qh1pX}X  
'K?h6?#  
/** +Y sGH~jX  
* @author treeroot C e-ru)  
* @since 2006-2-2 G<$:[ +w  
* @version 1.0 SKL4U5D{  
*/ mrP48#Y+l  
public class ImprovedMergeSort implements SortUtil.Sort { )t|:_Z  
;`78h?`  
private static final int THRESHOLD = 10; \%a0Lp{ I  
[<R haZz  
/* XIl <rN@-  
* (non-Javadoc) [`\VgKeu  
* Ay?<~)H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u?Ffqt9'  
*/ avRtYL  
public void sort(int[] data) { '@t$3 hk  
int[] temp=new int[data.length]; JY,$B-l  
mergeSort(data,temp,0,data.length-1); ttsR`R1.k  
} t{]Ew4Y4%O  
kXwAw]ogN  
private void mergeSort(int[] data, int[] temp, int l, int r) { *-nO,K>y`  
int i, j, k; e"S?qpJK  
int mid = (l + r) / 2; mAW.p=;  
if (l == r) 9p W~Gz  
return; X9m^i2tk  
if ((mid - l) >= THRESHOLD) e'3V4iU]  
mergeSort(data, temp, l, mid); 0~qc,-)3  
else S0^a)#D &  
insertSort(data, l, mid - l + 1); + `|A/w  
if ((r - mid) > THRESHOLD) 9&Jf4lC94  
mergeSort(data, temp, mid + 1, r); VHD+NY/  
else xnZnbgO+  
insertSort(data, mid + 1, r - mid); G"<#tif9K  
h3?>jE=H  
for (i = l; i <= mid; i++) { >@2<^&K`  
temp = data; _i05' _  
} QHR,p/p  
for (j = 1; j <= r - mid; j++) { "v1{  
temp[r - j + 1] = data[j + mid]; Ul}RT xJ  
} 7iP+!e}$.  
int a = temp[l]; FiUQ2w4  
int b = temp[r]; &:  Q'X  
for (i = l, j = r, k = l; k <= r; k++) { >w S'z]T9  
if (a < b) { pm6#azQ  
data[k] = temp[i++]; ?})A-$f ~  
a = temp; U~x]2{}  
} else { :ppaq  
data[k] = temp[j--]; EF`}*7)  
b = temp[j]; 2ioHhcYdJU  
} <V&0GAZ  
} b>uD-CSA  
} B>53+GyMV  
W@d&X+7e  
/** l f>/  
* @param data mku@n;Hl_  
* @param l )2[)11J9t  
* @param i n28JWkK8  
*/ *Al@|5  
private void insertSort(int[] data, int start, int len) { -<#) ]um  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); WNyW1?"  
} ,PlH|  
} 8 lggGt  
} b80#75Bj>  
}  2v{WX  
pfN(Ae Pt  
堆排序: %qc_kQ5%  
!..<_qfw  
package org.rut.util.algorithm.support; Aw#<:6-  
d(q1 ?{zr4  
import org.rut.util.algorithm.SortUtil; f$lb.fy5  
@]Cg5QW>T  
/** 0m_yW$w  
* @author treeroot TLwxP"  
* @since 2006-2-2  *&_*G~>D  
* @version 1.0 <],{at` v  
*/ cH5i420;aO  
public class HeapSort implements SortUtil.Sort{ eCGr_@1  
}A3/(  
/* (non-Javadoc) Y1PR?c Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HI8mNX3 "j  
*/ x UdF.c  
public void sort(int[] data) { H*W>v[>  
MaxHeap h=new MaxHeap(); @| z _&E  
h.init(data); 6 U.Jaai:  
for(int i=0;i h.remove(); <h#*wy:o2  
System.arraycopy(h.queue,1,data,0,data.length); 3TwjC:Yhv2  
} S=qh7ML  
@A,8 >0+  
private static class MaxHeap{ C~En0G1  
Hx.|5n,5  
void init(int[] data){ f+Y4~k  
this.queue=new int[data.length+1]; &=@{`2&  
for(int i=0;i queue[++size]=data; Bu:%trlgV  
fixUp(size); :>&q?xvA  
} i2<z"v63  
} Sdq}?-&Sa  
!ku}vTe  
private int size=0; <6Q^o[L  
5H3o?x   
private int[] queue; Xh"9Bcjf  
a{8a[z  
public int get() { `D+zX  
return queue[1]; ZLQmEF[>  
} nb_/1{F  
^Om}9rXw1  
public void remove() { /2K"Mpf8  
SortUtil.swap(queue,1,size--); R~g|w4a@sC  
fixDown(1); LHY7_"u#  
} "tyRnUP  
file://fixdown h#0n2o#  
private void fixDown(int k) { i%i~qTN  
int j; yY$^ R|t  
while ((j = k << 1) <= size) { I!/32* s1t  
if (j < size %26amp;%26amp; queue[j] j++; 4=,J@N-  
if (queue[k]>queue[j]) file://不用交换 H oQb.Z  
break; R_EU|a  
SortUtil.swap(queue,j,k); k3Yu"GY^  
k = j; #BRIp(65-6  
} uaIAVBRcS  
} u&~Xgq5[  
private void fixUp(int k) { .tRm1&Qi  
while (k > 1) { A{_CU-,  
int j = k >> 1; alJ0gc2?  
if (queue[j]>queue[k]) ,hzRqFg2  
break; +`>7cy%cZ  
SortUtil.swap(queue,j,k); DAw1S$dM  
k = j; D,IT>^[^7  
} vQ< ~-E  
} >LPb>t5%p  
Pe:)zt0  
} \Z5Wp5az},  
;+75"=[YT  
} ?+}Su'pv}  
l,|Llb  
SortUtil: ;lmg0dtJ  
Luao?;|U  
package org.rut.util.algorithm; O?vh]o  
{C w.?JU  
import org.rut.util.algorithm.support.BubbleSort; H&s`Xr  
import org.rut.util.algorithm.support.HeapSort; ~~yng-3)1  
import org.rut.util.algorithm.support.ImprovedMergeSort; QFnuu-82"  
import org.rut.util.algorithm.support.ImprovedQuickSort; #IH9S5B [  
import org.rut.util.algorithm.support.InsertSort; x(c+~4:_M  
import org.rut.util.algorithm.support.MergeSort; o@A`AA9  
import org.rut.util.algorithm.support.QuickSort; 89 d%P J0  
import org.rut.util.algorithm.support.SelectionSort; ~ZafTCa;  
import org.rut.util.algorithm.support.ShellSort; nf pO  
-'c qepC{T  
/** /Am9w$_T[  
* @author treeroot *k(FbZ  
* @since 2006-2-2 yl$Ko  
* @version 1.0 bZ`#;D<  
*/ u-~ec{oBu  
public class SortUtil { D:k< , {  
public final static int INSERT = 1; "I56l2dxd  
public final static int BUBBLE = 2; 8i;1JA  
public final static int SELECTION = 3; .qE  
public final static int SHELL = 4; wXQu%F3  
public final static int QUICK = 5; i?^L",[  
public final static int IMPROVED_QUICK = 6; g:uVl;>  
public final static int MERGE = 7; TX5??o  
public final static int IMPROVED_MERGE = 8; #GGa,@O  
public final static int HEAP = 9; F,vkk{Z>  
`GE8?UO-  
public static void sort(int[] data) { .7.1JT#@A7  
sort(data, IMPROVED_QUICK); \(LD<-a  
} Kjbk zc1  
private static String[] name={ =.s0"[%   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pbKmFweq  
}; emQc%wd{  
W(s5mX,Kv  
private static Sort[] impl=new Sort[]{ =b66H]h?  
new InsertSort(), 5_y w  
new BubbleSort(), i).Vu}W#S  
new SelectionSort(), hV $Zr4'  
new ShellSort(), 4evN^es'I_  
new QuickSort(), $j,$O>V  
new ImprovedQuickSort(), `Ku:%~$/  
new MergeSort(), `BZ|[ q3  
new ImprovedMergeSort(), H%vgPQ8  
new HeapSort() .+(ED  
}; 7&,$  
T}J)n5U}\  
public static String toString(int algorithm){ TgJ+:^+0  
return name[algorithm-1]; EkV#i  
} (J4( Ge  
NEIF1( :  
public static void sort(int[] data, int algorithm) { <LZ#A@]71  
impl[algorithm-1].sort(data); xVsI#`<a  
} 0]f/5jvLj  
KHP/Y {mH  
public static interface Sort { ?o)?N8U  
public void sort(int[] data); nKd'5f1  
} !]?kvf-3e  
G5|nt#>  
public static void swap(int[] data, int i, int j) { xj D$i'V+  
int temp = data; cGs& Kn;h  
data = data[j]; xrXfZ>$5bM  
data[j] = temp; :CqR1_n%  
} .|CoueH  
} |L89yjhWBs  
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