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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。 30wYc &H  
插入排序: Nn~tb2\vk  
1)nM#@%](h  
package org.rut.util.algorithm.support; k 2 mkOb  
'` BjRg57]  
import org.rut.util.algorithm.SortUtil; +Y_Q?/M@8  
/** y$+!%y*  
* @author treeroot )m$1al  
* @since 2006-2-2 /1s9;'I  
* @version 1.0 3Y.d&Nz  
*/ 3 LZL!^ 5N  
public class InsertSort implements SortUtil.Sort{ D~[ N_  
w yuJSB  
/* (non-Javadoc) Iqe=#hUFe!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0jl:Yzo&\  
*/ RBMMXJj  
public void sort(int[] data) { oRtY?6^$  
int temp; 3M`hn4)K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uaZ"x& oZ#  
} ru(?a~lF8~  
} q329z>  
}  (9'G  
o}j_eH l{  
} 'Kt4O9=p  
ePIly)=X  
冒泡排序: 9g<_JcN  
,_e/a   
package org.rut.util.algorithm.support; J7&.>y1%  
o{ YW  
import org.rut.util.algorithm.SortUtil; ~]m@k'n  
dd @COP?  
/** qW`XA  
* @author treeroot .$}Z:,aB  
* @since 2006-2-2 8 H$@Xts  
* @version 1.0 kOlI?wc  
*/ P5ESrZ@f  
public class BubbleSort implements SortUtil.Sort{ @ B}c4,  
[|m>vY!  
/* (non-Javadoc) &})4?5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .yHHogbt  
*/ ID{Pzmt-  
public void sort(int[] data) { 8O;rp(N.n  
int temp; hCOy\[2$  
for(int i=0;i for(int j=data.length-1;j>i;j--){  5Fl  
if(data[j] SortUtil.swap(data,j,j-1); H8=vQy  
} /(WX!EEsB  
} }AeE|RNc  
}  HC<BGIgL  
} \|b1s @c8  
M25z<Y  
} f0fqDmn  
Xy KKD&j  
选择排序: s1*WK&@  
D; 35@gtj  
package org.rut.util.algorithm.support; \e5,`  
JVIcNK)  
import org.rut.util.algorithm.SortUtil; "8C(_z+]K`  
k*UR# z(I  
/** F~uA-g  
* @author treeroot %l]rQjV-  
* @since 2006-2-2 `)gkkZ$)j  
* @version 1.0 W0r5D9k  
*/ * zJiii  
public class SelectionSort implements SortUtil.Sort { M%Kx{*aw&  
'piF_5(@  
/* B2Awdw3=g  
* (non-Javadoc) S|u1QGB  
* KzFs#rhpn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V }r_   
*/ UU:QK{{E  
public void sort(int[] data) { 0I ND9h. %  
int temp; Z:o' +oh  
for (int i = 0; i < data.length; i++) { v'2OHb#  
int lowIndex = i; Kw5+4R(5  
for (int j = data.length - 1; j > i; j--) { ah&plaVzC  
if (data[j] < data[lowIndex]) { "351s3ff  
lowIndex = j; ]a Ma*fF  
} ~]t2?SqNm  
} yI)RG OV  
SortUtil.swap(data,i,lowIndex); `- uZv  
} (^@;`8Dy8  
} uBL~AC3>O  
xr7<(:d  
} :O @,Z_"  
X:} 5L> '  
Shell排序: *MyS7<  
vng8{Mx90*  
package org.rut.util.algorithm.support; >=q!!'$:  
6[Pr<4J  
import org.rut.util.algorithm.SortUtil; %_X[{(  
=w>>7u$4  
/** 4@V<Suw  
* @author treeroot B #V 4  
* @since 2006-2-2 m#}{"d&J  
* @version 1.0 GT`<jzAiQ  
*/ 0T{Y_IG  
public class ShellSort implements SortUtil.Sort{ 9[]"%6  
gQzJ2LU(  
/* (non-Javadoc) 0_xcrM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :92a34  
*/ ~4 xBa:*z  
public void sort(int[] data) { (k HQKQmq  
for(int i=data.length/2;i>2;i/=2){ YI(OrR;V  
for(int j=0;j insertSort(data,j,i); H fmMf^c  
} BrH`:Dw  
} kpMM%"=V  
insertSort(data,0,1); 2W-NCE%K)T  
} ^}pREe c=  
>~bj7M6t  
/** +H^V},dBp!  
* @param data qFsg&<  
* @param j R"kE5 :  
* @param i Chi<)P$^  
*/ l$ _+WC*wp  
private void insertSort(int[] data, int start, int inc) { l?<z1Acd&  
int temp; z{M,2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g1!L. On  
} 9p'J(`  
} hy`)]>9z~  
} (9q{J(44  
|"E9DD]{  
} ?kxWj(D  
2B?i2[a,  
快速排序: 50hh0!1  
JGNxJ S<]  
package org.rut.util.algorithm.support; #3[b|cL  
7;-i_&vws  
import org.rut.util.algorithm.SortUtil; qN,FX#DP  
vgp%;-p(  
/** CH+&  
* @author treeroot "9T`3cM0  
* @since 2006-2-2 U4I` xw'  
* @version 1.0 Oqe.t;E 0}  
*/ >u#VHaB  
public class QuickSort implements SortUtil.Sort{ ~acK$.#  
B91PlM.  
/* (non-Javadoc) G+^$JN=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Ie`L("  
*/ hBSJEP  
public void sort(int[] data) { scEQDV  
quickSort(data,0,data.length-1); 4W-+k  
} 1E_Ui1[  
private void quickSort(int[] data,int i,int j){ g~D6.OZU  
int pivotIndex=(i+j)/2; Gv3Fg[MA@c  
file://swap /g7?,/vnZ  
SortUtil.swap(data,pivotIndex,j); 6zZR:ej  
(eE}W~Z  
int k=partition(data,i-1,j,data[j]); ' 1]bjW*!  
SortUtil.swap(data,k,j); #]/T9:  
if((k-i)>1) quickSort(data,i,k-1); [MP :Eeg  
if((j-k)>1) quickSort(data,k+1,j); 1e| M6*  
g*imswj7  
} R2ZQBwB  
/** x#VUEu]8  
* @param data :%oj'm44!  
* @param i VIdoT2  
* @param j c^gIK1f-  
* @return 'n#S6.Y:  
*/ 5VoiDM=\c  
private int partition(int[] data, int l, int r,int pivot) { % x;!s=U  
do{ G")EE#W$}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y%l#lz=6  
SortUtil.swap(data,l,r); ?bDae%>.d,  
} (uc)^lfX  
while(l SortUtil.swap(data,l,r); F@K;A%us)  
return l; ,T[ +omo  
} 8J U~Q  
?t P/VL  
} ''07Km@x  
-{SiK  
改进后的快速排序: B;je|M!d  
X_@@v|UF  
package org.rut.util.algorithm.support; zm"g,\.d  
<]qd9mj5  
import org.rut.util.algorithm.SortUtil; LbknSy C  
2/N*Uk 0  
/** F;@&uXYgc  
* @author treeroot l;kZS  
* @since 2006-2-2 g}KZL-p4\m  
* @version 1.0 *uM*)6O 3  
*/ ]arskmB]  
public class ImprovedQuickSort implements SortUtil.Sort { s4k%ty}  
6+#cyKj  
private static int MAX_STACK_SIZE=4096; ' uw&f;/E  
private static int THRESHOLD=10; ;CBdp-BUj  
/* (non-Javadoc) `I{Q,HQ7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c)fp;^  
*/ 8{ t&8Ql n  
public void sort(int[] data) { 6^u(PzlA|~  
int[] stack=new int[MAX_STACK_SIZE]; 5)<jPyC  
(.+n1)L?  
int top=-1; B`EgL/Wg[  
int pivot; uNBhVsM6<  
int pivotIndex,l,r; dF]8>jBOL  
7E)7sd  
stack[++top]=0; a[l5k  
stack[++top]=data.length-1; mj|9x1U)  
[ Ulo; #P  
while(top>0){ X+@,vCC  
int j=stack[top--]; ^`?> Huu<w  
int i=stack[top--]; HE'8  
y@JYkp>I  
pivotIndex=(i+j)/2; XjU;oh4:.  
pivot=data[pivotIndex]; 1]`HX=cl  
/MtacR  
SortUtil.swap(data,pivotIndex,j); ^SCWT\E  
)zV5KC{{  
file://partition 9%6`ZS~3  
l=i-1; X  jN.X  
r=j; Q6>( Z  
do{ 5 Vqvb|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hp AZ{P7  
SortUtil.swap(data,l,r); *X=-^\G  
} W7"sWaOhW  
while(l SortUtil.swap(data,l,r); !{;RtUPz*  
SortUtil.swap(data,l,j); e[!>ezaIY  
eO G%6C%a  
if((l-i)>THRESHOLD){ )>p6h]]a  
stack[++top]=i; >FNt*tX<0  
stack[++top]=l-1; 6P|neb}  
} ]Jq e)o  
if((j-l)>THRESHOLD){ #9Z-Hd<  
stack[++top]=l+1; &nP rozC  
stack[++top]=j; >YhqL62!a  
} .#|pje^  
wv-8\)oA  
} UkV] F]  
file://new InsertSort().sort(data); `<d>C}9  
insertSort(data); w[-Bsf  
} ;Vt u8f  
/** q(W@=-uDK  
* @param data +Z*%,m=N(  
*/ I),8EEf\  
private void insertSort(int[] data) { 4[q * 7m  
int temp; JK`P mp>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5yID%  
} {{,%p#/b  
} )' #(1 ,1k  
} A?zW!'  
CG;D(AWR;  
} A>puk2s  
oMbCljUC  
归并排序: rg~CF<  
Xv:IbM> Qc  
package org.rut.util.algorithm.support; wBET.l'd  
i|mA/ e3b  
import org.rut.util.algorithm.SortUtil; nj$K4_  
d]]qy  
/** H"l'E9k.&p  
* @author treeroot a{W-+t   
* @since 2006-2-2 qT4s* kqr  
* @version 1.0 4{KsCd)  
*/ p%-9T>og  
public class MergeSort implements SortUtil.Sort{ ?da3Azp  
IpxjP\  
/* (non-Javadoc) kZNZ?A<D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :83" t-O8[  
*/ r "R\  
public void sort(int[] data) { D~:fn|/Brp  
int[] temp=new int[data.length]; s-B\8&^C  
mergeSort(data,temp,0,data.length-1); X'm2uOEj  
} x?IT#ty  
*&D=]fG  
private void mergeSort(int[] data,int[] temp,int l,int r){ -E7\ .K3  
int mid=(l+r)/2; 25L{bcng  
if(l==r) return ; lLhCk>a  
mergeSort(data,temp,l,mid); %Y TIS*+0  
mergeSort(data,temp,mid+1,r); |.A>0-']M  
for(int i=l;i<=r;i++){ ?H&p zY~H  
temp=data; `O/)q^m1L  
} L/I-(08!Y:  
int i1=l; 0bE_iu>f'  
int i2=mid+1; _f`m/l  
for(int cur=l;cur<=r;cur++){ nq=fSK(  
if(i1==mid+1) >. Y ~F(  
data[cur]=temp[i2++]; )[1m$>  
else if(i2>r) /L.a:Er$  
data[cur]=temp[i1++]; F@BNSs N=  
else if(temp[i1] data[cur]=temp[i1++]; -)@.D>HsOt  
else 6D],275`J  
data[cur]=temp[i2++]; $m>e!P>%u  
} UL/>t}AG  
} P7b2I=t  
,o)MiR9-[A  
} ? &O$ayG77  
sAN#j {  
改进后的归并排序: [H1NP'Kg]  
Gu= Rf`o  
package org.rut.util.algorithm.support; <_![~n$H  
N5\<w>  
import org.rut.util.algorithm.SortUtil; ;Yj}9[p;T  
TI332,eL  
/** _MU'he^W  
* @author treeroot P*SXfb"HC  
* @since 2006-2-2 AZa3!e/1  
* @version 1.0 kBzzi^cl  
*/ gT.-Cf{  
public class ImprovedMergeSort implements SortUtil.Sort { o;.-I[9h]  
-AX3Rnv^!  
private static final int THRESHOLD = 10; nTAsy0p]  
KJd;c.  
/* ZLkJYZk  
* (non-Javadoc) j{g{`Qa  
* fh~&&f}6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nd6z81  
*/ v>XE]c_  
public void sort(int[] data) { dZW:Cf 9K  
int[] temp=new int[data.length]; n>HNpy  
mergeSort(data,temp,0,data.length-1); Vr*t~M>  
} 1}6pq 2  
g@Zc'g/XB  
private void mergeSort(int[] data, int[] temp, int l, int r) { (GQy"IuFh  
int i, j, k; ?vVkZsU  
int mid = (l + r) / 2; ,"'agg:St  
if (l == r) 6]Jv3Re'(I  
return; "#7i-?=  
if ((mid - l) >= THRESHOLD) ;Y"J j  
mergeSort(data, temp, l, mid); Ol? 2Qy.2)  
else .#n?^73  
insertSort(data, l, mid - l + 1); ?]t8$^m,;  
if ((r - mid) > THRESHOLD) V/Q6v YX  
mergeSort(data, temp, mid + 1, r); `G'V9Xs(  
else P}5aN_v \  
insertSort(data, mid + 1, r - mid); *%O1d.,  
_5zR!|\^  
for (i = l; i <= mid; i++) { -K j CPc  
temp = data; 9hv\%_>o  
} g@QpqrT  
for (j = 1; j <= r - mid; j++) { c|7Pnx%gT  
temp[r - j + 1] = data[j + mid]; R8 m/N t2  
} 7-5q\[ZK  
int a = temp[l]; qb_V ,b9  
int b = temp[r]; d>%_<pw  
for (i = l, j = r, k = l; k <= r; k++) { vl#/8]0!  
if (a < b) { )L{\k$r!EM  
data[k] = temp[i++]; C?O{l%0  
a = temp; E8xXr>j>#  
} else { U0rz 4fxc  
data[k] = temp[j--]; eYagI  
b = temp[j]; ;cO0Y.V9l  
} >eC^]#c  
} bfJDF(=h  
} ZD,l 2DQ?  
8[DD=[&  
/** 4MM#\  
* @param data Dihk8qJ/6  
* @param l j<!$ug9VA  
* @param i 982$d<0%  
*/ gQ?k}D  
private void insertSort(int[] data, int start, int len) { +o/q@&v;Ax  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $d"6y  
} 6+It>mnR  
} ~DJ/sY2/  
} 5 `+*({  
} 9J?j2!D  
%=]{~5f>  
堆排序: L^=>)\R2$[  
u7/M>YJ`T  
package org.rut.util.algorithm.support; '.iUv#j4Sh  
EgY]U1{  
import org.rut.util.algorithm.SortUtil; J ^v_VZ3  
v uJ~Lg{  
/** }$7Hf+G  
* @author treeroot {*|yU"  
* @since 2006-2-2 mz#(\p=T  
* @version 1.0 p?}Rolk7  
*/ j#*K[  
public class HeapSort implements SortUtil.Sort{ +?c&Gazi  
zYep V  
/* (non-Javadoc) os2yiF",   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u%|VmM>  
*/ X)yTx8v4  
public void sort(int[] data) { lu>>~vy6  
MaxHeap h=new MaxHeap(); 9Kqr9U--v  
h.init(data); T1x$v,)8x  
for(int i=0;i h.remove(); #&@&BlIe  
System.arraycopy(h.queue,1,data,0,data.length); 5'o.v^l  
} OxD\e5r  
!PO(Bfd  
private static class MaxHeap{ S"Efp/-  
04( h!@!g:  
void init(int[] data){ # mzJ^V-  
this.queue=new int[data.length+1]; `Q{kiy  
for(int i=0;i queue[++size]=data; 7mu%|!  
fixUp(size); p* ^O 8o  
} N+r~\[N\9  
} 9oaq%Sf  
H fRxgA@  
private int size=0; Tv(s?T6f  
 W6a2I  
private int[] queue; >Mn"k\j4  
b~\![HoCMM  
public int get() { _r ajm J  
return queue[1]; r}vr E ^Q  
} Pd3t~1TaW  
N8KHNTb-M  
public void remove() { wo*/{KFvh  
SortUtil.swap(queue,1,size--); @50Js3R1q  
fixDown(1); i3kI{8h  
}  ztTpMj  
file://fixdown o&>0 pc  
private void fixDown(int k) { KR{kn[2|Q  
int j; !Zs;m`j&9  
while ((j = k << 1) <= size) { ? 56Zw"89  
if (j < size %26amp;%26amp; queue[j] j++; \O^= Z{3y  
if (queue[k]>queue[j]) file://不用交换 bT8BJY%+  
break; o77HRX  
SortUtil.swap(queue,j,k); '- Z4GcL  
k = j; |5O%@  
} +oyc9PoXF  
} &AoWT:Ea  
private void fixUp(int k) { TzIgEn~  
while (k > 1) { $mpfr#!&3o  
int j = k >> 1; mX<D]Z< k  
if (queue[j]>queue[k]) h IGa);g  
break; ]qXfg c  
SortUtil.swap(queue,j,k); @]cpPW-b  
k = j; wngxVhu8Ld  
} !1!uB }  
} BkIvoW_  
"U yw7  
} p<jHUG4?'  
:}E*u^v K  
} QJ$]~)w?H  
MY0Wr%@#0  
SortUtil: KYlWV<sR  
OnG!5b  
package org.rut.util.algorithm; ag] nVE/  
 R z[-  
import org.rut.util.algorithm.support.BubbleSort; ~M <4HC  
import org.rut.util.algorithm.support.HeapSort; 7C&`i}/t  
import org.rut.util.algorithm.support.ImprovedMergeSort; #!<x|N?_<  
import org.rut.util.algorithm.support.ImprovedQuickSort; u'=#~'6  
import org.rut.util.algorithm.support.InsertSort; SK-|O9Ki  
import org.rut.util.algorithm.support.MergeSort; q6osRK*20  
import org.rut.util.algorithm.support.QuickSort; t[#`%$% '  
import org.rut.util.algorithm.support.SelectionSort; PZ"xW0"-  
import org.rut.util.algorithm.support.ShellSort; %.Mtn%:I *  
0ai4%=d-  
/** &jj\-;=~Ho  
* @author treeroot S;CT:kG6Y{  
* @since 2006-2-2 ,,@_r&f:  
* @version 1.0 +|o -lb  
*/ of(Nq@  
public class SortUtil { [TNYPA> {  
public final static int INSERT = 1; [t ^|l?  
public final static int BUBBLE = 2; `5>IvrzXrK  
public final static int SELECTION = 3; JhuK W>7  
public final static int SHELL = 4; &qo'ge8p  
public final static int QUICK = 5; <@Ew-JU  
public final static int IMPROVED_QUICK = 6; ?lbX.+  
public final static int MERGE = 7; Gk!v-h9cq  
public final static int IMPROVED_MERGE = 8; ;7qk9rz4  
public final static int HEAP = 9; k5<lkC2z  
8o~\L= l  
public static void sort(int[] data) { _msDf2e9  
sort(data, IMPROVED_QUICK); !4 6 ^}3  
} :CH'Bt4<  
private static String[] name={ {Q4=GrS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \Z)'':},C  
}; u |#ruFR  
vnIxI a  
private static Sort[] impl=new Sort[]{ J :,  
new InsertSort(), V @8X .R>  
new BubbleSort(), z.{y VQE  
new SelectionSort(), @ cv`}k  
new ShellSort(), RPLr7Lb  
new QuickSort(), 7\jH?Zi  
new ImprovedQuickSort(), J\2F%kBej?  
new MergeSort(), TzPVO>s  
new ImprovedMergeSort(), N\H(AzMw  
new HeapSort() K<N0%c~  
}; |QHWX^pO  
Q,jlKgB 5:  
public static String toString(int algorithm){ w$2-t  
return name[algorithm-1]; \2~.r/`1  
} 's*UU:R  
4u:{PN  
public static void sort(int[] data, int algorithm) { SqEO ] ~  
impl[algorithm-1].sort(data); c-gaK\u}j}  
} ^B5Hjf9  
QAX+oy  
public static interface Sort { 1)k))w9  
public void sort(int[] data); G|H\(3hHLZ  
} Y/{Z`}  
6#dx%TC  
public static void swap(int[] data, int i, int j) { .}j@(D  
int temp = data; \QHM7C T  
data = data[j]; jQf1h|e  
data[j] = temp; J| 3CG;+  
} bEPXNN  
} s'/ug  
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