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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。 TZa LB}4  
插入排序: k~=P0";  
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package org.rut.util.algorithm.support; FOS*X  
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import org.rut.util.algorithm.SortUtil; *xDV8iu_  
/** E^x/v_,$w!  
* @author treeroot e}2[g  
* @since 2006-2-2 8D`TN8[W  
* @version 1.0 LN=#&7=$c  
*/ a!;CY1>  
public class InsertSort implements SortUtil.Sort{ ez[$;>  
mN'sJ1L-  
/* (non-Javadoc) 8j8~?=$a6Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kj#h9e  
*/ <|VV8r93  
public void sort(int[] data) { M#xol/)h  
int temp; UW-`k1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^'4I%L"  
} -z>m]YDH  
} SHqz &2u  
} N`7+] T  
/n3SE0Y  
} P7;q^jlB  
"QM2YJ55m`  
冒泡排序: )H%Rw V#  
be>KG ZU0  
package org.rut.util.algorithm.support; oX?~  
gTg[!}_;\N  
import org.rut.util.algorithm.SortUtil; {1'M76T  
cEEnR1  
/** F& ['w-n%  
* @author treeroot /5Xt<7vm8  
* @since 2006-2-2 %TzdpQp"  
* @version 1.0 phy:G}F6%  
*/ Ss'Dto35Q  
public class BubbleSort implements SortUtil.Sort{ cxnEcX\   
&8hW~G>(m  
/* (non-Javadoc) k j&hn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Pf['BF"  
*/ aa\?k\h'7X  
public void sort(int[] data) { CjLiLB  
int temp; 6' 9zpe@`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (b+o$C  
if(data[j] SortUtil.swap(data,j,j-1); }\vw>iHPX@  
} Gvqu v\  
} jgT *=/GH2  
} K#]FUUnj=  
} Wfh+D[^  
mxTuwx   
} 6#kK  
K]ds2Kp&  
选择排序: v8K4u)  
X9#i!_*  
package org.rut.util.algorithm.support; *%2,= p  
?P Mi#H  
import org.rut.util.algorithm.SortUtil; 3q`Uq`t4mR  
57:27d0y  
/** T$tO[QR/  
* @author treeroot *TYOsD**9  
* @since 2006-2-2 1#nY Z%  
* @version 1.0 l!%V&HJV  
*/ Ol*|J  
public class SelectionSort implements SortUtil.Sort { =${ImMwj  
'.#3h$d  
/* b%e7rY2  
* (non-Javadoc) 'PdUSv|lH  
* .a}!!\@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^fvx2<  
*/ qino:_g  
public void sort(int[] data) { Q$~_'I7~Mz  
int temp; ?wMS[Kj  
for (int i = 0; i < data.length; i++) { +}NQ |y V  
int lowIndex = i; zO3}c3D~q  
for (int j = data.length - 1; j > i; j--) { "Fqrk>Q~  
if (data[j] < data[lowIndex]) { G_ 6!w//  
lowIndex = j; #=I5_u  
} u7bji>j  
} nLnzl  
SortUtil.swap(data,i,lowIndex); '#CYw=S+  
} PfJfa/#pA  
} TU?$yNE  
{-L}YX"Bh  
} els71t -  
DcEGIaW  
Shell排序: )4  'yI*  
9f$3{ g{m  
package org.rut.util.algorithm.support; {EVHkQ+o  
xd]7?L@h.I  
import org.rut.util.algorithm.SortUtil; _ Zzne  
W";Po)YC  
/** WRN}>]NgQ  
* @author treeroot GD#W=O  
* @since 2006-2-2 `qa>6`\  
* @version 1.0 {0Ej *%  
*/ >RKepV(X7  
public class ShellSort implements SortUtil.Sort{ bdvVPjGc&  
OCI{)r<O2m  
/* (non-Javadoc) 0Y/k /)Ul]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ou [Wz{  
*/ NucLf6  
public void sort(int[] data) { . "`f~s\G  
for(int i=data.length/2;i>2;i/=2){ 3y-P-NI~=  
for(int j=0;j insertSort(data,j,i); ;`FR1KIg  
} n$3w=9EX *  
} 8PvO_Gz5  
insertSort(data,0,1); u1/q8'RW  
} 420cbD3a  
4j~WrdI*  
/** wKAxUPzm  
* @param data s7:w>,v/  
* @param j ]VK9d;0D  
* @param i xO;Qr.3PX  
*/ N#7_)S[@0l  
private void insertSort(int[] data, int start, int inc) { PsI{y&.  
int temp; wbh^ZMQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); seNH/pRb  
} qF4DX$$<  
} .jRv8x b  
} *+<H4.W H  
D0 rqte  
} &Y$)s<u8.  
KPdlg.  
快速排序: aN~x3G  
anFl:=  
package org.rut.util.algorithm.support; qgsw8O&  
n]bxG8~t  
import org.rut.util.algorithm.SortUtil; Ct}rj-L<i  
3E:+DF-Z\  
/** WvWZzlw  
* @author treeroot a,\GOy(q{  
* @since 2006-2-2 +(vL ~  
* @version 1.0 KPI[{T\`ZM  
*/ >2;KPV0H  
public class QuickSort implements SortUtil.Sort{ G>W:3y  
&Ef6'  
/* (non-Javadoc) |~YhN'OJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6G>bZ+  
*/ Tg6nb7@P  
public void sort(int[] data) { zjwo"6c>  
quickSort(data,0,data.length-1); x DX_s:A  
} R5'_il  
private void quickSort(int[] data,int i,int j){ k1M?6TW&  
int pivotIndex=(i+j)/2; t: qPW<wc  
file://swap RX\@fmK&  
SortUtil.swap(data,pivotIndex,j); B-aJn8>/  
Axx{G~n![  
int k=partition(data,i-1,j,data[j]); a1A3uP  
SortUtil.swap(data,k,j); 4mF=A$Q_/  
if((k-i)>1) quickSort(data,i,k-1); 8!Q0:4Vb  
if((j-k)>1) quickSort(data,k+1,j); Dlo4Wy  
JL&ni]m  
} pt8#cU\  
/** 7' TXR[   
* @param data g<N3 L [  
* @param i &}vc^io  
* @param j B~/ejC!  
* @return &3'zG)  
*/ ?1lx8+  
private int partition(int[] data, int l, int r,int pivot) { N;XJMk_ H  
do{ |NaEXzo|qY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +/2:  
SortUtil.swap(data,l,r); &6@e9ff0  
} vKNxL^x  
while(l SortUtil.swap(data,l,r); ?iNihE  
return l; Pna2IB+  
} X>VxE/  
K2t|d[r  
} [:-o;K\.-a  
-Khb  
改进后的快速排序: 'C\knQ  
LQ=Fck~[r  
package org.rut.util.algorithm.support; i+B tz-  
!FJ_\UST0  
import org.rut.util.algorithm.SortUtil; "Yf?33UNZ  
^W<uc :L7  
/** m4kUA"n5  
* @author treeroot ^tKJ}}  
* @since 2006-2-2 VWcR@/3  
* @version 1.0 1F }mlyS  
*/ E 9n7P'8  
public class ImprovedQuickSort implements SortUtil.Sort { %#b+ =J  
^tFgkzXm  
private static int MAX_STACK_SIZE=4096; YM]ZL,8  
private static int THRESHOLD=10; NpF}~$2  
/* (non-Javadoc) A49HYX-l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }-ysP$  
*/ j8#B  
public void sort(int[] data) { N^&T5cAC  
int[] stack=new int[MAX_STACK_SIZE]; y5 bELWA  
B=J/HiwV)  
int top=-1; D1<$]r,  
int pivot; t"Djh^=y  
int pivotIndex,l,r; j 1#T]CDs  
?$FvE4!n  
stack[++top]=0; L[9]Ez$2+  
stack[++top]=data.length-1; /-jk_8@a  
@^93q  
while(top>0){ KmlpB  
int j=stack[top--]; FR@## i$  
int i=stack[top--]; B~2\v%J  
_Vxk4KjP5  
pivotIndex=(i+j)/2; ij~023$DTt  
pivot=data[pivotIndex]; 6sp?'GO`~  
_"#ucM=B:-  
SortUtil.swap(data,pivotIndex,j); B#;yko  
UHW;e}O5  
file://partition eA(c{  
l=i-1; Q!dNJQpb  
r=j; "Hw%@  
do{ Bn_@R`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _jCjq   
SortUtil.swap(data,l,r); +A,t9 3:k  
} S  H5G  
while(l SortUtil.swap(data,l,r); gKGM|0u|r  
SortUtil.swap(data,l,j); A1,- qv1s  
#.n%$r  
if((l-i)>THRESHOLD){ <xeo9'k6&  
stack[++top]=i; y*5bF 0  
stack[++top]=l-1; Gd 5J<K  
} Q.G6 y,KR  
if((j-l)>THRESHOLD){ u2xb^vu  
stack[++top]=l+1; L E>A|M$X  
stack[++top]=j; y}bE'Od  
} *T'>-nm]  
s8<)lO<SV.  
} x=(cQmQ  
file://new InsertSort().sort(data); .\> I-  
insertSort(data); e.IKmH]z  
} =K2mR}n\;  
/** D*R49hja{  
* @param data tgbr/eCoU  
*/ ]h$,=Qf hD  
private void insertSort(int[] data) { q"[8u ]j  
int temp; U3yIONlt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /n SmGAO  
} g np\z/'>  
} 4X &\/X  
} :3x|U,wC  
Q0j$u[x6s  
} Ya)s_Zr7  
HjAQF?;V  
归并排序: L)o7~M  
g.d%z  
package org.rut.util.algorithm.support; EO5k?k[*  
d?/?VooU  
import org.rut.util.algorithm.SortUtil; !~&vcz0>)9  
/WJ*ro]Hd$  
/** OxraaN`  
* @author treeroot Bld$<uU  
* @since 2006-2-2 *X K9-%3  
* @version 1.0 a9GLFA8Vq  
*/ V nv9 <=R  
public class MergeSort implements SortUtil.Sort{ eiaL zI,O  
{rG`Upp  
/* (non-Javadoc) [J|)DUjt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) THM\-abz  
*/ m18If  
public void sort(int[] data) { v@0lTl_  
int[] temp=new int[data.length]; =U5lPsiv,3  
mergeSort(data,temp,0,data.length-1); xED`8PCfu  
} 8@|rB3J  
}'KVi=qnHb  
private void mergeSort(int[] data,int[] temp,int l,int r){ VBIY[2zf  
int mid=(l+r)/2; x^| J-  
if(l==r) return ; e:Zc-  
mergeSort(data,temp,l,mid); 0pS|t/h0  
mergeSort(data,temp,mid+1,r); ]r{-K63P{!  
for(int i=l;i<=r;i++){ <z*SO a  
temp=data; DVNGV   
} # Pulbk8  
int i1=l; @]#0jiS  
int i2=mid+1; G w$sL&1m\  
for(int cur=l;cur<=r;cur++){ @JWoF^U  
if(i1==mid+1) aNpeePF)z  
data[cur]=temp[i2++]; [*j C  
else if(i2>r) yuvt<kz  
data[cur]=temp[i1++]; ;u'mSJI'  
else if(temp[i1] data[cur]=temp[i1++]; tZ]|3wp  
else >Udb*76 D  
data[cur]=temp[i2++]; ~R]E=/m|  
} {Tp0#fi  
} p0xd c3  
tj ,*-).4%  
} Eg"DiI)7  
aPq9^S*  
改进后的归并排序: ,R1`/aRy  
U/2g N H  
package org.rut.util.algorithm.support; eiJO;%fl>l  
3:i4DBp,i  
import org.rut.util.algorithm.SortUtil; bUC-}  
fn zj@_{|  
/** @xJ qG"  
* @author treeroot 9lA@ K[  
* @since 2006-2-2 PnsQ[}.  
* @version 1.0 oQC*d}_E}  
*/ l[O!_bH  
public class ImprovedMergeSort implements SortUtil.Sort { 2roPZj  
h94SLj]  
private static final int THRESHOLD = 10; ^A^,/3  
`~hAXnQK=  
/* 8x jJ  
* (non-Javadoc) BYEqTwhT&  
* w0Fi~:b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8u$Kr q  
*/ PXcpROg56  
public void sort(int[] data) { oW-Tw@D  
int[] temp=new int[data.length]; N 5rY*S  
mergeSort(data,temp,0,data.length-1); cWl)ZE<hM  
} (XJehdB0  
zYdSg<[^  
private void mergeSort(int[] data, int[] temp, int l, int r) { BciwS_Qx  
int i, j, k; x\XgQQ]-  
int mid = (l + r) / 2; V#1_jxP)Q  
if (l == r) X-! yi  
return; ~1pJQ)!zlq  
if ((mid - l) >= THRESHOLD) @5H1Ni5/o@  
mergeSort(data, temp, l, mid); o$m64l  
else br}.s@~  
insertSort(data, l, mid - l + 1); *$x/(!UE  
if ((r - mid) > THRESHOLD) >\K<q>*  
mergeSort(data, temp, mid + 1, r); /d5_-AB(v  
else YH^_d3A;  
insertSort(data, mid + 1, r - mid); d3T|N\(DL  
(| Am  
for (i = l; i <= mid; i++) { }$V]00 X  
temp = data; 5j`"@C5;O  
} l/yLSGjM  
for (j = 1; j <= r - mid; j++) { EA2BN}  
temp[r - j + 1] = data[j + mid]; |H5){2V>K  
} )1O *~%  
int a = temp[l]; _> .TB\  
int b = temp[r]; N~ljU;wo-9  
for (i = l, j = r, k = l; k <= r; k++) { Qp<?[C}'W  
if (a < b) { TH/!z,( >  
data[k] = temp[i++]; MC/$:PV  
a = temp; sMli!u  
} else { #$%9XD3  
data[k] = temp[j--]; .9> e r  
b = temp[j]; YL&$cT]1  
} it\{#rb=4  
} a=k+:=%y  
} XZuJ<]}X,  
bK; -Xcm  
/** Z;XR%n8  
* @param data dY/=-ymW  
* @param l Y>EwU  
* @param i q|om^:n.  
*/ ~R/7J{Sg  
private void insertSort(int[] data, int start, int len) { e%N\Pshgv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z?[;Japg  
} H|T:_*5  
} &qFdP'E;$  
} F {]:  
} @y->4`N  
q^Lj)zmnK  
堆排序: ^o"9f1s5  
P6S^wjk  
package org.rut.util.algorithm.support; <(?ahO5  
jt tlzCDn  
import org.rut.util.algorithm.SortUtil; Gu~y/CE'  
N2;T\xx,  
/** |A 7Yv  
* @author treeroot :D-d`OyjG>  
* @since 2006-2-2 Ka2U@fK"  
* @version 1.0 `8\pihww  
*/ QY-P!JD  
public class HeapSort implements SortUtil.Sort{ >Fz_]z   
Y:G6Nd VFM  
/* (non-Javadoc) B8Jev\_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'rHkJ  
*/ Iqe4O~)  
public void sort(int[] data) { %B3E9<9>U  
MaxHeap h=new MaxHeap();  ;e()|  
h.init(data); 88d0`6K-9  
for(int i=0;i h.remove(); y ']>J+b0  
System.arraycopy(h.queue,1,data,0,data.length); H0 km*5Sn  
} tHXt*tzq  
dI-=0v-|  
private static class MaxHeap{ w48T?  
q>r9ooN  
void init(int[] data){ B c*Rn3i@  
this.queue=new int[data.length+1]; j)C%zzBu(  
for(int i=0;i queue[++size]=data; <|Bh;;  
fixUp(size); h(]O;a-  
} J^pL_  
} +f+x3OMX3  
VGM8&J{o'  
private int size=0; h -+vM9j  
!zvKl;yT  
private int[] queue; it5].A&  
r3hj GcpaX  
public int get() { c _O| ?1  
return queue[1]; QgEG%YqB  
} bL!NT}y`  
s41<e"  
public void remove() { wX#=l?,K  
SortUtil.swap(queue,1,size--); 8~EDmg[  
fixDown(1); /%$'N$@f  
} Cq u/(=  
file://fixdown vC$[Zm  
private void fixDown(int k) { QZ"Lh  
int j; j3P)cz-0/L  
while ((j = k << 1) <= size) { er,R}v  
if (j < size %26amp;%26amp; queue[j] j++; 9X@y*;w<t  
if (queue[k]>queue[j]) file://不用交换 zbx,qctYo$  
break; Yj/S(4(h?  
SortUtil.swap(queue,j,k); #_QvnQ?I  
k = j; engql;  
} QSAz:Yvf|  
} G#N h)ff  
private void fixUp(int k) { . CLiv  
while (k > 1) { w%VHq z$  
int j = k >> 1; %xyt4}-)m  
if (queue[j]>queue[k]) aoco'BR F  
break; y{s?]hLk  
SortUtil.swap(queue,j,k); N3MMxm_u  
k = j; bh6Mh< +  
} g/mVd;#o  
} Up*p*(d3  
V(=~p[  
} 6WgGewn  
jkFS=eonK  
} _w Cp.[3?t  
ub{<m^|)  
SortUtil: gr4Hh/V  
4.|]R8Mn  
package org.rut.util.algorithm; I`t"Na2i  
0LrTYrlj  
import org.rut.util.algorithm.support.BubbleSort; d&(GIH E&d  
import org.rut.util.algorithm.support.HeapSort; X{9D fgW  
import org.rut.util.algorithm.support.ImprovedMergeSort; K:V_,[gO  
import org.rut.util.algorithm.support.ImprovedQuickSort; }v;@1[.B  
import org.rut.util.algorithm.support.InsertSort; c*1t<OAS~  
import org.rut.util.algorithm.support.MergeSort; 68*h#&  
import org.rut.util.algorithm.support.QuickSort; vXR-#MS`}  
import org.rut.util.algorithm.support.SelectionSort; @PZ&/F ^  
import org.rut.util.algorithm.support.ShellSort; a_L&*%;  
f&js,NU"  
/** )2g\GRg6  
* @author treeroot 9|D!&=8   
* @since 2006-2-2 n9050&_S  
* @version 1.0 ?<#6=  
*/ rfkk3oy  
public class SortUtil { dum! AO  
public final static int INSERT = 1; YCj"^RC^  
public final static int BUBBLE = 2; 8 %Lq~ lk  
public final static int SELECTION = 3; *"P :ySA  
public final static int SHELL = 4; Cl6y:21]K  
public final static int QUICK = 5; 1 [[` ^v  
public final static int IMPROVED_QUICK = 6; u<]-%ha$  
public final static int MERGE = 7; TCX*$ac"  
public final static int IMPROVED_MERGE = 8; &0It"17Ej  
public final static int HEAP = 9; @7" xDgA  
yj `b-^$?  
public static void sort(int[] data) { M9_ y>N[0  
sort(data, IMPROVED_QUICK); Nw+0b4{  
} S?D|"#-,  
private static String[] name={ pez[qs  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6U @3 xU`  
}; zKx?cEpE  
kmi[u8iXD_  
private static Sort[] impl=new Sort[]{ ?#<Fxme  
new InsertSort(), y"]?TEd  
new BubbleSort(), I+!w9o2nZ  
new SelectionSort(), "e69aAA,  
new ShellSort(), q+19EJ(  
new QuickSort(), [~W"$sT  
new ImprovedQuickSort(), #@;RJJZg  
new MergeSort(), mK%!9F V  
new ImprovedMergeSort(), V);{o>%.K  
new HeapSort() >e/;  
}; -=&r}/&  
ua0`&,a3I  
public static String toString(int algorithm){ WQ\'z?P  
return name[algorithm-1]; %+L:Gm+^g#  
} f h)Cz)  
I')URk[  
public static void sort(int[] data, int algorithm) { 2Y(P hw2%  
impl[algorithm-1].sort(data); ~x)Awdlu  
} QjWv?tm  
' aBX>M  
public static interface Sort { u&I?LZ-=,  
public void sort(int[] data); TKx.`Cf m  
} ecA:y!N  
g:dw%h  
public static void swap(int[] data, int i, int j) { "w*VyD  
int temp = data; z\pT nteO  
data = data[j]; U?[a@Hj{  
data[j] = temp; }W#Gf.$6C  
} kUUN2  
} *Y?rls`  
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