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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。 h2SVDKj  
插入排序: n\v;4ly^  
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package org.rut.util.algorithm.support; [<+A?M=  
'edd6yTd  
import org.rut.util.algorithm.SortUtil; RpAqnDX)  
/** L|wD2iw  
* @author treeroot -_bnGY%,  
* @since 2006-2-2 *f[nge&.  
* @version 1.0 G^`IfF-j  
*/ kPm{tc  
public class InsertSort implements SortUtil.Sort{ ETw7/S${  
hGPo{>xR  
/* (non-Javadoc) mIK-a{?G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TzC'x WO  
*/ Ua>lf8w<  
public void sort(int[] data) { &Hb;; Ic(  
int temp; 7*9a`p3w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lTe7n'y^^  
} KxZO.>,  
} `K,{Y_  
} 8 z) K  
~$GRgOn  
} PJq;OM|  
yMU>vr  
冒泡排序: A{[joo  
NtuO&{}i  
package org.rut.util.algorithm.support; dr|>P*  
B}PT-S1l  
import org.rut.util.algorithm.SortUtil; "$->nC.  
3D"2yTM(  
/** RObo4  
* @author treeroot Rqi= AQ  
* @since 2006-2-2 1G0U}-6RH  
* @version 1.0 MX@t[{Gg9  
*/ :!SVpCt3  
public class BubbleSort implements SortUtil.Sort{ 77FI&*q  
_GoV\wGKl  
/* (non-Javadoc) LH=gNFgzt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #DBg8  
*/ [Eeanl&x>  
public void sort(int[] data) { ewo]-BQS  
int temp; i++a^f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )w?DB@Tx  
if(data[j] SortUtil.swap(data,j,j-1); L}E~CiL0n  
} 2 L>;M  
} n(i Uc1Y  
} 'jw?XtG  
} rBOxI  
#GDnV/0)  
} g[oa'.*OB  
'qL:7  
选择排序: m* Zq3j  
skd3E4  
package org.rut.util.algorithm.support; Q[j'FtP%  
e -!6m #0  
import org.rut.util.algorithm.SortUtil; iKJ-$x_5  
kLsp0% 2  
/** 1V\tKDM  
* @author treeroot )\S3Q  
* @since 2006-2-2 o!]muO*Rm  
* @version 1.0 QKW\z aG  
*/ dRdI('  
public class SelectionSort implements SortUtil.Sort { bW]7$?acv  
HE;}B!>  
/* iyA=d{S;V  
* (non-Javadoc) ~XzT~WxW  
* ;PS V3Zh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v qt#JdPp9  
*/ 'n:|D7t  
public void sort(int[] data) { @U8}K#  
int temp; M id v  
for (int i = 0; i < data.length; i++) { yQT cO^E  
int lowIndex = i; u|ph_?6 o  
for (int j = data.length - 1; j > i; j--) { 1zGD~[M  
if (data[j] < data[lowIndex]) { O$qxo &  
lowIndex = j; C+0MzfLgf  
} KKBrw+)AJ  
} B(pxyv)  
SortUtil.swap(data,i,lowIndex); f`$F^=  
} J?wCqA  
} h23"<  
TpAE9S  
} fH@P&SX  
ty"|yA  
Shell排序: r}**^"mFy  
Qe[ejj1o:  
package org.rut.util.algorithm.support; &RJ*DAmL  
Fb!Ew`;QT  
import org.rut.util.algorithm.SortUtil; i,H(6NL.  
i/C`]1R/  
/** V< Ib#rd'  
* @author treeroot \aN*x  
* @since 2006-2-2 K2XRKoG  
* @version 1.0 :17Pc\:DS  
*/ ~WjK'N4n5  
public class ShellSort implements SortUtil.Sort{ X[ 6#J  
OH\(;RN*  
/* (non-Javadoc) Dru iiA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kF;N}O2?{  
*/ J dM0f!3  
public void sort(int[] data) { rAn:hR{  
for(int i=data.length/2;i>2;i/=2){ +]3kcm7B  
for(int j=0;j insertSort(data,j,i); _xefFy  
} 'mELW)S  
} Hk1[0)  
insertSort(data,0,1); O"M2*qiH  
} >\7M f@c  
V&h{a8xa$  
/** E/3i _R  
* @param data _qxBjB4t"a  
* @param j S8j!?$`  
* @param i C09rgEB\B  
*/ |JL?"cc  
private void insertSort(int[] data, int start, int inc) { ^ Fnag]qQ  
int temp; Ka_g3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^Q\Hy\  
} 57K\sT4[  
} BXb=N E  
} fTOGW`s^  
7D KTd^^M  
} 83adnm  
+SB>>  
快速排序: :R-_EY$k6  
Q}: $F{  
package org.rut.util.algorithm.support; {>3J96  
:cxA  
import org.rut.util.algorithm.SortUtil; EY`]""~8v  
${h1(ec8  
/** M ZAz= )-  
* @author treeroot J2Mq1*Vpq  
* @since 2006-2-2 {E;oirv&  
* @version 1.0 ri`;   
*/ uq2C|=M-x\  
public class QuickSort implements SortUtil.Sort{ kz*6%Cg*~  
5SMV3~*P  
/* (non-Javadoc) tb^/jzC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4J1_rMfh  
*/ S\SYFXUl  
public void sort(int[] data) { F%:74.]Y  
quickSort(data,0,data.length-1); bzXeG;c<7  
} *Fg)`M3g  
private void quickSort(int[] data,int i,int j){ 7w<e^H?  
int pivotIndex=(i+j)/2; i5,yrPF  
file://swap HU/2P`DGP  
SortUtil.swap(data,pivotIndex,j); '~9w<dSB!r  
`Frr?.3&-  
int k=partition(data,i-1,j,data[j]); +lXIv  
SortUtil.swap(data,k,j); TVM19)9  
if((k-i)>1) quickSort(data,i,k-1); .0rTk$B  
if((j-k)>1) quickSort(data,k+1,j); 0j!xv(1  
A"O\u=!  
} y9N6!M|'y  
/** [}=a6Q>)  
* @param data DbSR(:  
* @param i VRZqY7j}g  
* @param j 95E #  
* @return <L('RgA@X  
*/ ~: fSD0  
private int partition(int[] data, int l, int r,int pivot) { Ou4 `#7FR  
do{ %>y`VN D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ' <?=!&\D  
SortUtil.swap(data,l,r); #N$\d4q9  
} m^~5Xr"  
while(l SortUtil.swap(data,l,r); D/ VEl{ba-  
return l; b BiTAP  
} r1Hh @sxn  
+c8t~2tuN  
} !' 0PM[  
~z\a:+  
改进后的快速排序: #+N_wIP4  
Ifokg~X~G  
package org.rut.util.algorithm.support; njZJp|y6  
\:g\?[  
import org.rut.util.algorithm.SortUtil; 0CvGpM,  
B]NcY&A  
/** 9q+W>wt  
* @author treeroot n2~WUK  
* @since 2006-2-2 rvU^W+d  
* @version 1.0 Ai"MJ6)  
*/ qW4DW4  
public class ImprovedQuickSort implements SortUtil.Sort { +\*b?x  
:7i x`C2  
private static int MAX_STACK_SIZE=4096; Eg&:yF}?(  
private static int THRESHOLD=10; Uq @].3nf  
/* (non-Javadoc) *kpP )\P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @u`W(Ow  
*/ OFBEJacy  
public void sort(int[] data) { }.pqV X{ d  
int[] stack=new int[MAX_STACK_SIZE]; PhPe7^  
%#o@c  
int top=-1; <d"nz:e  
int pivot; Fe %Vp/  
int pivotIndex,l,r; vcCNxIzEG  
B9Mp3[   
stack[++top]=0; d >NO}MR  
stack[++top]=data.length-1; d&AO 4^  
^<Gxip  
while(top>0){ A|4om=MO  
int j=stack[top--]; 3AglvGK7{  
int i=stack[top--]; MkHkM  
en/h`h]h  
pivotIndex=(i+j)/2; g\?v 5  
pivot=data[pivotIndex]; /CH]'u^j  
a0+q^*\d\R  
SortUtil.swap(data,pivotIndex,j); f_$hK9I  
x[$KZGK+GL  
file://partition a6gPJF[Jo  
l=i-1; ~1E!Co  
r=j; .jg@UAK  
do{ 3~7!=s\v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); EJ>rW(s  
SortUtil.swap(data,l,r); @/?i|!6  
} b`$qKO  
while(l SortUtil.swap(data,l,r); B'Jf&v  
SortUtil.swap(data,l,j); 4:S]n19nq  
SSCs96  
if((l-i)>THRESHOLD){ 0g6sGz=  
stack[++top]=i; OjAdY\ ]1  
stack[++top]=l-1; n.qT7d(  
} !*L)v  
if((j-l)>THRESHOLD){ $U. |  
stack[++top]=l+1; w;{Q)_A  
stack[++top]=j; OF={k[  
} M 87CP=yc  
?hGE[.(eh]  
} =PQ4S2Q  
file://new InsertSort().sort(data); JV@G9PT  
insertSort(data); M)!"R [V  
} $./aK J1B  
/** 9r+'DX?>  
* @param data Ww60-d}}Q  
*/ 71%$&6  
private void insertSort(int[] data) { ;/_htdj  
int temp; Y#Q!mbp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [OTn>/W'  
} zwU[!i)  
} T9%|B9FeJ  
} $'>JG9M  
|U;O HS  
} 99`w'Nlk  
{d*OJ/4  
归并排序: _Y ;tD  
Ihf)gfHj  
package org.rut.util.algorithm.support; B @QWr;  
AX$r,KmE  
import org.rut.util.algorithm.SortUtil; q?Csm\Y  
fz`)CWo:  
/** d5>&, {o7N  
* @author treeroot 1KrJS(.  
* @since 2006-2-2 8#lq:  
* @version 1.0 3~bB2APk  
*/ WA,D=)GP  
public class MergeSort implements SortUtil.Sort{ gSw4\R  
Ex zB{ "  
/* (non-Javadoc) ZLxa|R7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W>i%sHH6  
*/ =f y|Dm74  
public void sort(int[] data) { * 30K}&T  
int[] temp=new int[data.length]; B~ i  
mergeSort(data,temp,0,data.length-1); ]vB\yQE  
} +a^gC  
y]+5Y.Cw$  
private void mergeSort(int[] data,int[] temp,int l,int r){ k9OGnCW\  
int mid=(l+r)/2; "FA. T7G  
if(l==r) return ; >h\u[I$7  
mergeSort(data,temp,l,mid); Lo_+W1+  
mergeSort(data,temp,mid+1,r); fn,hP_  
for(int i=l;i<=r;i++){ RC[Sa wA  
temp=data; 3: WEODV2  
} wpYk`L r  
int i1=l; bA,Zfsr6#  
int i2=mid+1; mi<Q3;m  
for(int cur=l;cur<=r;cur++){ O+|C<;K  
if(i1==mid+1) n<j+KD#a  
data[cur]=temp[i2++]; 6 h#U,G  
else if(i2>r) po*8WSl9c[  
data[cur]=temp[i1++]; 6];3h>c]N  
else if(temp[i1] data[cur]=temp[i1++]; KS93v9|  
else 3sdL\  
data[cur]=temp[i2++]; qE[YZ(/f0&  
} vs=q<Uw)  
} "lw|EpQk`  
m!Z<\2OP  
} ciN\SA ZY  
h#O9TB  
改进后的归并排序: |xcI~ X7Q  
El5} f4sl  
package org.rut.util.algorithm.support; K2yNI q_  
cbyzZ#WRb  
import org.rut.util.algorithm.SortUtil; c?HUW  
^@AyC"K  
/** -)oUb=Lk{  
* @author treeroot [,Go*r  
* @since 2006-2-2 }' AY#g  
* @version 1.0 ; $80}TY '  
*/ a24 AmoWx  
public class ImprovedMergeSort implements SortUtil.Sort { bg-/ 8,  
.7^(~&5N  
private static final int THRESHOLD = 10; ]<f(@]R/d  
C$6FI `J  
/* H( i   
* (non-Javadoc) dREY m}1  
*  &Q~W{.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D?1fY!C:r  
*/ ft(o-f7,  
public void sort(int[] data) { +m%%Bz>  
int[] temp=new int[data.length]; Icrnu}pl_  
mergeSort(data,temp,0,data.length-1); N7J?S~x  
} 8^ f:-5  
{m>ylE  
private void mergeSort(int[] data, int[] temp, int l, int r) { R\3a Sx L  
int i, j, k; ":Tm6Nj  
int mid = (l + r) / 2; rl%,9JD!  
if (l == r) c]ARgrH-  
return; F =e9o*z  
if ((mid - l) >= THRESHOLD) 1]2]l*&3  
mergeSort(data, temp, l, mid); ALTOi?  
else +_i{4Iz~p  
insertSort(data, l, mid - l + 1); +n;nvf}(  
if ((r - mid) > THRESHOLD) @h{|tP%"  
mergeSort(data, temp, mid + 1, r); W[O]Aal{  
else GmWr  
insertSort(data, mid + 1, r - mid); qXW\/NT"p<  
pVy=rS-  
for (i = l; i <= mid; i++) { 0wv#AT  
temp = data; f+ceL'fr  
} 8-nf4=ll  
for (j = 1; j <= r - mid; j++) { ~%/Rc`  
temp[r - j + 1] = data[j + mid]; zg<-%r'$  
} . |T=T0^  
int a = temp[l]; B]"`}jn  
int b = temp[r]; ^_bG{du  
for (i = l, j = r, k = l; k <= r; k++) { TR0y4u[  
if (a < b) { 8J(j}</>a  
data[k] = temp[i++]; >5~#BrpwG  
a = temp; nL:&G'd  
} else { `]eJF|"  
data[k] = temp[j--]; LOx+?4|y  
b = temp[j]; f"5O'QHGQK  
} LN5LT'CE   
} eA4:]A"  
} +Ua|0>?  
F$?Ab\#B  
/** ;yt6Yp.6e  
* @param data {'O><4  
* @param l INi$-Y+  
* @param i  lln"c  
*/ z5fE<=<X_W  
private void insertSort(int[] data, int start, int len) { /IUu-/ D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )Fv.eIBY  
}  l!|c_  
} J2W-l{`r<  
} 1XSnnkJm  
} s7 "xDDV  
x"12$7 9=  
堆排序: :]-oo*xP  
sW]^YT>?  
package org.rut.util.algorithm.support; -XV,r<''  
+'?Qph6o,7  
import org.rut.util.algorithm.SortUtil; | ;tH?E  
/sKL|]i=  
/** l/X_CM8y~  
* @author treeroot l'+3 6  
* @since 2006-2-2 'c s(gc 0  
* @version 1.0 5.~Je6K U  
*/ '8X>,un  
public class HeapSort implements SortUtil.Sort{ S 5S\zTPIf  
6ZQ |L=Ytp  
/* (non-Javadoc) fc9;ZX7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ap dXsL  
*/ V,&%[H [  
public void sort(int[] data) { "<ZV'z  
MaxHeap h=new MaxHeap(); Y P2VSK2Q  
h.init(data); C Bkoky 9&  
for(int i=0;i h.remove(); C& +MRP  
System.arraycopy(h.queue,1,data,0,data.length); r[L%ap\{  
} FQ< -Wc  
7]h%?W !  
private static class MaxHeap{ ]ZY2\'  
9jkz83/+<  
void init(int[] data){ %v0M~J}+  
this.queue=new int[data.length+1]; QJ2]8K)+C  
for(int i=0;i queue[++size]=data; S>yiD`v  
fixUp(size); r6m^~Wq!}  
} } e[ E  
} x%B_v^^^  
?Z#N9Z~\  
private int size=0; 7Q .Su  
\zO.#H  
private int[] queue; r<`:Q]  
d9f7 &  
public int get() { +K 4XMf  
return queue[1]; G$<(>"Yr~$  
} 5p0~AN)  
tDK@?PfKz  
public void remove() { Q]k< Y  
SortUtil.swap(queue,1,size--); <|Td0|x _q  
fixDown(1); cI=6zMB  
}  >;fVuy  
file://fixdown Cy~IB [  
private void fixDown(int k) { |p|Zv H  
int j; fzSkl`K}  
while ((j = k << 1) <= size) { /7AHd ;  
if (j < size %26amp;%26amp; queue[j] j++; BPY7O  
if (queue[k]>queue[j]) file://不用交换 ;KL7SM%g4  
break; D#g -mqar:  
SortUtil.swap(queue,j,k); Th)  
k = j; 5 D|#l*V  
} DSrU7#  
} Q dj(D\.  
private void fixUp(int k) { wNf:_^|}  
while (k > 1) { UUt"8]@[  
int j = k >> 1; yZleots1  
if (queue[j]>queue[k]) e=sc$1|4=  
break; mxv ?PP  
SortUtil.swap(queue,j,k); }je<^]a  
k = j; .p#kW:zspA  
} ]*2),H1 c  
} c#OxI*,+/  
? x%s j  
} b;i*}4h!  
jB LTEb  
} W{6QvQD8  
/JD}b[J$  
SortUtil: wLV,E,gM  
ng1E'c]0@  
package org.rut.util.algorithm; k<9,Ypa  
"-4|HA  
import org.rut.util.algorithm.support.BubbleSort; _}l(i1o,/  
import org.rut.util.algorithm.support.HeapSort; |+cz\+  
import org.rut.util.algorithm.support.ImprovedMergeSort; t~+M>Fjm?d  
import org.rut.util.algorithm.support.ImprovedQuickSort; <y6`8J7:  
import org.rut.util.algorithm.support.InsertSort; PQHztS"  
import org.rut.util.algorithm.support.MergeSort; -)V0D,r$[  
import org.rut.util.algorithm.support.QuickSort; BZeEZ2"  
import org.rut.util.algorithm.support.SelectionSort; pzF_g- B  
import org.rut.util.algorithm.support.ShellSort; T\6Qr$t  
X`8<;l  
/** A(y6]E!  
* @author treeroot 1-kuK<KR  
* @since 2006-2-2 V3,C5KKk&z  
* @version 1.0 9jal D X  
*/ `G\ qGllX  
public class SortUtil { N*IroT3  
public final static int INSERT = 1;  ti5fsc  
public final static int BUBBLE = 2; aBA oSn  
public final static int SELECTION = 3; vXJs.)D7  
public final static int SHELL = 4; !wYN",R-  
public final static int QUICK = 5; ?JuJu1  
public final static int IMPROVED_QUICK = 6; CsR[@&n'  
public final static int MERGE = 7; mF6-f#t>H+  
public final static int IMPROVED_MERGE = 8; 6uRE9h|  
public final static int HEAP = 9; xdSMYH{2A  
z g7Q`  
public static void sort(int[] data) { YD4I2'E  
sort(data, IMPROVED_QUICK); ;}B=g/C  
} m$8siF{<q  
private static String[] name={ # qd!_oN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >tg)F|@  
}; 4H8r[  
(Jq m9  
private static Sort[] impl=new Sort[]{ 5_^d3LOT0x  
new InsertSort(), i\xs!QU  
new BubbleSort(),  hb[ThQ  
new SelectionSort(), ?$pNduE  
new ShellSort(), @nH3nn  
new QuickSort(), w-).HPe  
new ImprovedQuickSort(), %JeND XbI4  
new MergeSort(), m(f`=+lqI`  
new ImprovedMergeSort(), dle\}Sy=  
new HeapSort() 0:{W t  
}; Bc=(1ty)  
M+t)#O4  
public static String toString(int algorithm){ 49 FP&NgK  
return name[algorithm-1]; XDK Me}  
} _`2%)#^ o  
'(K4@[3t  
public static void sort(int[] data, int algorithm) { dsIbr"m  
impl[algorithm-1].sort(data); eF3NyL(A  
} ?V`-z#y7  
tB;PGk_6  
public static interface Sort { ^gVQ6=z%  
public void sort(int[] data); XfcYcN  
} AbNr]w&pXC  
-x ?Z2EA!  
public static void swap(int[] data, int i, int j) { $1=7^v[U  
int temp = data; N XB8u6  
data = data[j]; g$Tsht(rHD  
data[j] = temp; 0Gu77&  
} A rE~6X  
} EW$drY@  
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