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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&*&R~>  
插入排序: ami>Pp  
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package org.rut.util.algorithm.support; 9?hF<}1XH}  
|Fze9kZO  
import org.rut.util.algorithm.SortUtil; 3}phg  
/** z}-R^"40  
* @author treeroot D}}?{pe  
* @since 2006-2-2 W\Scak>  
* @version 1.0 O SUiS`k  
*/ :epB:r  
public class InsertSort implements SortUtil.Sort{ xWa[qCr  
0&| M/  
/* (non-Javadoc) [ R8BcO(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r9bAbE bI  
*/ C_ d|2C6  
public void sort(int[] data) { aw lq/  
int temp; 52# *{q}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +,R!el!o~u  
} `%#_y67v  
} KLG.?`h:  
} r8*xp\/  
!WGQ34R{  
} .j,xh )v"  
fk?!0M6d  
冒泡排序: X1}M_h %  
tAep_GR  
package org.rut.util.algorithm.support; T>1#SWQ/9  
@V^.eVM\R  
import org.rut.util.algorithm.SortUtil; $U7/w?gc'  
hmLI9TUe6  
/** Kc^ctAk7;  
* @author treeroot P%yL{  
* @since 2006-2-2 kzUj)  
* @version 1.0 Oz_CEMcy  
*/ -*w2<DCn  
public class BubbleSort implements SortUtil.Sort{ q3/4l%"X  
yr>J^Et%_  
/* (non-Javadoc) p}!)4EI=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5z3WRg  
*/ IRk)u`  
public void sort(int[] data) { j?$B@Zk  
int temp; rDwd!Jet  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [{xY3WS  
if(data[j] SortUtil.swap(data,j,j-1); 6.45^'t]  
} <=%[.. (S  
} uw8g%  
} qR2cRepV  
} (d NF)(wn  
1z2v[S&pk  
} _O87[F1  
`hG`}G|^  
选择排序: rs>,p)  
g]44|9x(W  
package org.rut.util.algorithm.support; BDPE.8s  
pcscNUp  
import org.rut.util.algorithm.SortUtil; r/NaoIrJV  
d72 yu3  
/** O3slYd&V  
* @author treeroot hr'?#K  
* @since 2006-2-2 !}U3{L-  
* @version 1.0 x7l}u`N4  
*/ 6OC4?#96%'  
public class SelectionSort implements SortUtil.Sort { sP@XV/`3L6  
8aRmHy"9l  
/* }mZCQJ#`  
* (non-Javadoc) ^_G#JJ\@$  
* &"tQpw5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 Z SU^v  
*/ }*-fh$QJ  
public void sort(int[] data) { p*cyW l  
int temp; GpXf).a@  
for (int i = 0; i < data.length; i++) {  r?0w5I  
int lowIndex = i; 5B8/"G  
for (int j = data.length - 1; j > i; j--) { &l{ctP%q  
if (data[j] < data[lowIndex]) { leizjL\P  
lowIndex = j; y<`:I|y  
} V5h_uGOD  
} e>!]_B1ad  
SortUtil.swap(data,i,lowIndex); 5gx;Bp^_  
} ;VCFDE{K=  
} g0/ R\  
x3 Fn'+  
} 'i3-mZ/|8  
' t(#HBU  
Shell排序: *n@rPr-  
v/]xdP^Z  
package org.rut.util.algorithm.support; Y@ ;/Sf$Q  
qB$QC  
import org.rut.util.algorithm.SortUtil; |4aU&OX  
5f@&XwD9  
/** 9 s2z=^  
* @author treeroot V+0pvgS[  
* @since 2006-2-2 6,~ %  
* @version 1.0 /N/jwLr  
*/ @wAYhnxq  
public class ShellSort implements SortUtil.Sort{ k-s|gC4  
cqZ lpm$c  
/* (non-Javadoc) c(3idO*R)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E){ODyk  
*/ jgpF+V-n$  
public void sort(int[] data) { MbTmdRf  
for(int i=data.length/2;i>2;i/=2){ z'>b)wY](  
for(int j=0;j insertSort(data,j,i); 8193d%Wb  
} @1pfH\m  
} KV{  
insertSort(data,0,1); #f=41d%  
} ZL!5dT&@W  
~^ '+ .  
/** 5V0#_!QAN  
* @param data ` -f\6r|:)  
* @param j @WKJ7pt`'N  
* @param i !,7)ZW?*8  
*/ r:U<cL T[9  
private void insertSort(int[] data, int start, int inc) { mv*M2NuhT  
int temp; Ve"M8-{oKk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =7~;*Ts  
} ]nxSVKE4p  
} G-o6~"J\  
} sC :.}6  
&,/-<y-S  
} 1F2(MKOo!  
gIGi7x  
快速排序: KAr5>^<zw  
4>HQ2S{t  
package org.rut.util.algorithm.support; !Xq5r8]  
AQ"rk9Z  
import org.rut.util.algorithm.SortUtil; gd]k3XN$f  
-gb@BIV#  
/** ^v3J ld  
* @author treeroot v)zxQuH]^  
* @since 2006-2-2 \/ Zo*/  
* @version 1.0 &y3;`A7,  
*/ q?0&0  
public class QuickSort implements SortUtil.Sort{ 1yc$b+TH  
[A;0I jKam  
/* (non-Javadoc) mLHl]xs4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !i{5mc \  
*/ WZbRR.TxO  
public void sort(int[] data) { U'}[:h~)  
quickSort(data,0,data.length-1); leXdxpc  
} 1l}fX}5%I;  
private void quickSort(int[] data,int i,int j){ d=HD! e  
int pivotIndex=(i+j)/2; niPqzi  
file://swap yyVE%e5nl  
SortUtil.swap(data,pivotIndex,j); CSFE[F63  
?IiFFfs  
int k=partition(data,i-1,j,data[j]); A;;OGJ,!\  
SortUtil.swap(data,k,j); }hc+ENh  
if((k-i)>1) quickSort(data,i,k-1); 2.a{,d  
if((j-k)>1) quickSort(data,k+1,j); soB_j  
4)snt3k  
} catJC3  
/** p<RIvSqM  
* @param data BDi+ *8  
* @param i 2d OUY $4  
* @param j mP +H C)2  
* @return %L  nG^L  
*/ kxY9[#:<fB  
private int partition(int[] data, int l, int r,int pivot) { ;l@Ge`&u  
do{ <+<,$jGC-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v +?'/Q%  
SortUtil.swap(data,l,r); GRgpy  
} )Y=ti~?M(  
while(l SortUtil.swap(data,l,r); }A<fCm7  
return l;  7"])Y  
} G/_8xmsU  
#]wBXzu?  
} '"V]>)  
e= ",58  
改进后的快速排序: =A/$[POr  
MnW"ksH  
package org.rut.util.algorithm.support; ;'4Kg@/  
}~ga86:n0  
import org.rut.util.algorithm.SortUtil; n=h!V$X   
-D_xA10  
/** |f[:mO   
* @author treeroot U;U19[]  
* @since 2006-2-2 7I:<i$)V  
* @version 1.0 d]^\qeG^p  
*/ B}d)e_uLj  
public class ImprovedQuickSort implements SortUtil.Sort { XiyL563gh  
,LDdL  
private static int MAX_STACK_SIZE=4096; #4^D'r>pJ  
private static int THRESHOLD=10; >% E=l  
/* (non-Javadoc) <d3 a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "A}2iI  
*/ p xQh;w  
public void sort(int[] data) { >6z7.d  
int[] stack=new int[MAX_STACK_SIZE]; ]Mgxv>zRbs  
e[.JS6  
int top=-1; =#?=Lh  
int pivot; E@)9'?q  
int pivotIndex,l,r; ]7%+SH,RdD  
TmgSV#G  
stack[++top]=0; J/A UOInh  
stack[++top]=data.length-1; a +`;:tX,  
 BbNl:`  
while(top>0){ 1lHBg  
int j=stack[top--]; t[bZg9;  
int i=stack[top--]; NKu*kL}W=  
X}]g;|~SN  
pivotIndex=(i+j)/2; k{+ Gv}Y  
pivot=data[pivotIndex]; m^1'aO_;q  
9Qc=D"'  
SortUtil.swap(data,pivotIndex,j); ~qb-uT\(99  
24d{ol)  
file://partition @Yzb6@g"  
l=i-1; y6Ea_v  
r=j; 8G_KbS  
do{ W&9X <c*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T=T1?@2C  
SortUtil.swap(data,l,r); :>, m$XO  
} ap.L=vn  
while(l SortUtil.swap(data,l,r); BGL-lJrG  
SortUtil.swap(data,l,j); \7tJ)[0aF  
Jgzg[6  
if((l-i)>THRESHOLD){ h1QrFPQnu  
stack[++top]=i; bqm%@*fZo  
stack[++top]=l-1; kwpbgQ  
} .OvH<%g!.  
if((j-l)>THRESHOLD){ Nvj KB)J  
stack[++top]=l+1; .^!uazPE0  
stack[++top]=j; s!j vBy  
} j{H,{x  
 u~j&g  
} aumM\rY  
file://new InsertSort().sort(data); N5@l[F7I  
insertSort(data); sFonc  
} $ud\CU:r  
/** (p}N cn.  
* @param data N/eFwv.Er  
*/ z%[^-l-  
private void insertSort(int[] data) { 5^GrG|~  
int temp; jR mo9Bb2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \Qe`>nA  
} l=ZX9<3  
} JReJlDu  
} } !RBH(m%  
8H2A<&3i  
} vo]$[Cp|4  
}Uunlz<  
归并排序: LE4P$%>H  
tLe"i>  
package org.rut.util.algorithm.support; ]MV=@T^8#  
bRK[u\,  
import org.rut.util.algorithm.SortUtil; 0z=^_Fb  
'645Fr[lg  
/** LP5@ID2G  
* @author treeroot 3^p;'7x  
* @since 2006-2-2 ]ZM-c~nL  
* @version 1.0 |j~{gfpSE  
*/ h<IPV'1  
public class MergeSort implements SortUtil.Sort{ >iFi~)i_4y  
`ouCQ]tKz  
/* (non-Javadoc) Nd61ns(N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5vqh09-FB  
*/ jmh$6 N% F  
public void sort(int[] data) { z)]Br1  
int[] temp=new int[data.length]; Id 40yER  
mergeSort(data,temp,0,data.length-1); {,zn#hU.R  
} v[=TPfX0  
^WmP,Xf#  
private void mergeSort(int[] data,int[] temp,int l,int r){ #H/suQZN"g  
int mid=(l+r)/2; w]Z:Y`  
if(l==r) return ; IRB BLXv7\  
mergeSort(data,temp,l,mid); ?UV!^w@L:0  
mergeSort(data,temp,mid+1,r); g)Dg=3+>  
for(int i=l;i<=r;i++){ Sv|jR r'  
temp=data; '7/c7m/$X<  
} W)m\q}]FYz  
int i1=l; -4nSiI  
int i2=mid+1; J:Ncy}AO  
for(int cur=l;cur<=r;cur++){ s2iL5N|"Q  
if(i1==mid+1) Q a8;MxK`  
data[cur]=temp[i2++]; CxJkT2  
else if(i2>r) =@0/.oSD  
data[cur]=temp[i1++]; qr_:zXsob_  
else if(temp[i1] data[cur]=temp[i1++]; 'AJlkLqm#>  
else .z&,d&E  
data[cur]=temp[i2++]; CWS&f g%o{  
} ca!DZ%y  
} 4Q n5Mr@<  
2g:V_%  
} )6 [d'2  
>.f'_2#Z&  
改进后的归并排序: v* /}s :a  
`%A>{A"  
package org.rut.util.algorithm.support; oBZzMTPe  
)-_To&S*  
import org.rut.util.algorithm.SortUtil; VLs%;|`5D  
[ nG@ 3n  
/** oV Hh  
* @author treeroot \?rBtD(  
* @since 2006-2-2 Mg76v<mv<  
* @version 1.0 5t-dvYgU  
*/ K"U[OZC`  
public class ImprovedMergeSort implements SortUtil.Sort { |}^ BF%8V:  
OVgx2_F  
private static final int THRESHOLD = 10; 76rRF   
B$@fE}  
/* x;p7n 2_  
* (non-Javadoc) [Uw/;Kyh  
* w,v~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #> @~3kGg  
*/ I-?Dil3  
public void sort(int[] data) { ^t#W?rxp&  
int[] temp=new int[data.length]; vgvJ6$#  
mergeSort(data,temp,0,data.length-1); ?ta(`+"  
} l!^+Xeg~  
s`Z'5J;S  
private void mergeSort(int[] data, int[] temp, int l, int r) { v<c@bDZ>  
int i, j, k; 5<?s86GHh'  
int mid = (l + r) / 2; |'" 17c&  
if (l == r) ;&v~tD7  
return; ri?>@i-9=  
if ((mid - l) >= THRESHOLD) uy^vQ/  
mergeSort(data, temp, l, mid); "ZU CYYre  
else _yJAn\  
insertSort(data, l, mid - l + 1); R#0Z  
if ((r - mid) > THRESHOLD) b9gezXAcd  
mergeSort(data, temp, mid + 1, r); g(D r/D  
else ^~Dmb2h  
insertSort(data, mid + 1, r - mid); 6I`Lszs  
EA+}Rf6}  
for (i = l; i <= mid; i++) { {D9m>B3"{  
temp = data; rfVHPMD0  
} P&0o~@`cL  
for (j = 1; j <= r - mid; j++) { I"1H]@"=  
temp[r - j + 1] = data[j + mid]; mcB8xE  
} /9..hEq^  
int a = temp[l]; NiCB.a  
int b = temp[r]; !?u{2 D  
for (i = l, j = r, k = l; k <= r; k++) { ~gA p`Q  
if (a < b) { ;mw$(ZKa#  
data[k] = temp[i++]; _K5R?"H0  
a = temp; C+=8?u<  
} else { S"wn0B$"  
data[k] = temp[j--]; .3 JLa8y  
b = temp[j]; t'pY~a9F  
} ]&mN~$+C  
} uO,9h0y0W  
} E,nxv+AQ  
50l! f7  
/** ,-GkP>8f(  
* @param data Ja@zeD)f"  
* @param l wQV[ZfU^h  
* @param i eumpNF%$  
*/ E"l/r4*f@  
private void insertSort(int[] data, int start, int len) { +.u)\'r;h  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i G%h-  
} y$7vJl.uS/  
} 8:)W!tr  
} ,fa'  
} tin5.N)"z  
ra4$/@3n  
堆排序: <@puWm[p  
>m-VBo  
package org.rut.util.algorithm.support; {hmC=j  
[_pw|BGp  
import org.rut.util.algorithm.SortUtil; MY]<^/Q  
6 ?C|pO  
/** +=Q/'g   
* @author treeroot D; bHX  
* @since 2006-2-2 (v'#~)R_`  
* @version 1.0 F^/1 u  
*/ ev}ugRxt|k  
public class HeapSort implements SortUtil.Sort{ &eqeQD6  
*49lM;  
/* (non-Javadoc) [$<\*d/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ..5rW0lr  
*/ (&)PlIi7  
public void sort(int[] data) { 8w Xnc%  
MaxHeap h=new MaxHeap(); WX9ABh&5  
h.init(data); -xXz}2S4  
for(int i=0;i h.remove(); :47bf<w|Y  
System.arraycopy(h.queue,1,data,0,data.length); 1YrIcovi-  
} Z Vin+z  
+6$|No  
private static class MaxHeap{ aGR!T{`   
"nzQ$E>?$  
void init(int[] data){ 9 Y-y?Y  
this.queue=new int[data.length+1]; J:!m49fF  
for(int i=0;i queue[++size]=data; p!OCF]r  
fixUp(size); abW[hp  
} ruKm_j#J  
} +=:*[JEK,U  
pp2,d`01[L  
private int size=0; R iPxz=kr  
!)1gGXRY  
private int[] queue; M:9 6QM~  
{%"n[DLps  
public int get() { $q iY)RE  
return queue[1]; pr) `7VuKp  
} ]"2;x  
C2[* $ 1U  
public void remove() { .EF(<JC?  
SortUtil.swap(queue,1,size--); b5u8j  
fixDown(1); ZgzjRa++  
} I+VL~'VlS  
file://fixdown BIk0n;Kz<L  
private void fixDown(int k) { xRI7_8Jpyn  
int j; 8?za&v  
while ((j = k << 1) <= size) { RZgklEU  
if (j < size %26amp;%26amp; queue[j] j++; LrGLIt`  
if (queue[k]>queue[j]) file://不用交换 =sYUzYm  
break; `Q@w*ta)  
SortUtil.swap(queue,j,k); .T63:  
k = j; 5vmc'Om  
} sgGXj7  
} $\w<.)"#  
private void fixUp(int k) { OtVRhR3>  
while (k > 1) { ]27  
int j = k >> 1; )43\qIu\  
if (queue[j]>queue[k]) Y_gMoo  
break; @BfJb[A#  
SortUtil.swap(queue,j,k); :< d.  
k = j; I0qS x{K  
} g5OKhL0u  
} x%!Ea{ s  
n`Y"b&  
} 0|J]EsPxu  
"?X,);5S  
} A5\00O~  
X9-WU\?UC  
SortUtil: nqFJNK]a  
){I0  
package org.rut.util.algorithm; 7'~O ai~r  
;J>upI   
import org.rut.util.algorithm.support.BubbleSort; -91*VBrOd  
import org.rut.util.algorithm.support.HeapSort; yd|roG/  
import org.rut.util.algorithm.support.ImprovedMergeSort; Km)VOX[ZZ  
import org.rut.util.algorithm.support.ImprovedQuickSort;   L* 0$x  
import org.rut.util.algorithm.support.InsertSort; a7fFp 9l!  
import org.rut.util.algorithm.support.MergeSort; @,:6wKMc  
import org.rut.util.algorithm.support.QuickSort; \`:nmFO(9  
import org.rut.util.algorithm.support.SelectionSort; AbExJ~JV\g  
import org.rut.util.algorithm.support.ShellSort; sy]hMGH:3W  
x_+-TC4IXn  
/** k',#T932x1  
* @author treeroot %4QpDt  
* @since 2006-2-2 F<+!28&h  
* @version 1.0 1 O?bT,"b  
*/ QhJuH_f 0  
public class SortUtil { B4Fuvi  
public final static int INSERT = 1; J85S'cwZZ  
public final static int BUBBLE = 2; 0Xw$l3@N^  
public final static int SELECTION = 3; T2ZB(B D  
public final static int SHELL = 4; TFAd  
public final static int QUICK = 5;  3cA '9  
public final static int IMPROVED_QUICK = 6; * @=ZzL  
public final static int MERGE = 7; x##0s5Qn  
public final static int IMPROVED_MERGE = 8; Uk'bOp  
public final static int HEAP = 9; 1s_N!a  
P U2^4h/[`  
public static void sort(int[] data) { 0#S#v2r5  
sort(data, IMPROVED_QUICK); )4e8LO  
} B6yTD7  
private static String[] name={ 11((b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qN"Q3mU^h*  
}; "OO)m](w  
jAcrXB*  
private static Sort[] impl=new Sort[]{ SYd6D@^2j  
new InsertSort(), xjy(f~'  
new BubbleSort(), 8-PHW,1@a3  
new SelectionSort(), ,gdud[&|;  
new ShellSort(), rQD^O4j R  
new QuickSort(), OfK>-8  
new ImprovedQuickSort(), idNra#  
new MergeSort(), Rz#q68  
new ImprovedMergeSort(), k.ttrKy<q/  
new HeapSort() Q@ Ze+IhK`  
}; X5tx(}j  
,(A $WT@e  
public static String toString(int algorithm){ YvG=P<_xw  
return name[algorithm-1]; TYKs2+S6  
} 9Wv}g"KY0  
(2Z k fN  
public static void sort(int[] data, int algorithm) { [Qqomm.[\w  
impl[algorithm-1].sort(data); 6E-AfY'<  
} R uGG3"|  
fgoLN\  
public static interface Sort { ictV7)  
public void sort(int[] data); i*((@:  
} #M)+sK$H%f  
]5r@`%9  
public static void swap(int[] data, int i, int j) { !T#EkMM  
int temp = data; 1{A K=H')  
data = data[j]; jx{wOb~oO)  
data[j] = temp; z*UgRLKZD  
} ij,Rq`}l  
} #,9s\T  
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