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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。 2fP~;\AP  
插入排序: `oPLl0  
aH^{Vv$]M@  
package org.rut.util.algorithm.support; tQf!|]#J  
j@SYXKL~  
import org.rut.util.algorithm.SortUtil; x/_dW  
/** *I/A,#4r  
* @author treeroot gPp(e j7  
* @since 2006-2-2 /.)2d8,  
* @version 1.0 )-)pYRlO  
*/ ,5:![  
public class InsertSort implements SortUtil.Sort{ ' 3VqkQ4  
PC0HH  
/* (non-Javadoc) O(Td:Zdp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '2xcce#  
*/ wzbz }P>  
public void sort(int[] data) { _f66>a<  
int temp; a+'}XEhSC:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R( GmU4  
} O&=KlnI:  
} FdM<;}6T  
} j`hNZ%a  
R9q0,yQW  
} ;x16shH  
!c."   
冒泡排序: <L2GUX36#  
-O /T?H  
package org.rut.util.algorithm.support; "Whwc   
~R$[n.Vpk  
import org.rut.util.algorithm.SortUtil; XK3!V|y`  
bZK+9IR  
/** YPG,9iZ&f  
* @author treeroot <oZ(ng@X  
* @since 2006-2-2 A$N+9n\  
* @version 1.0 oL)lyUVT  
*/ =kF? _KN  
public class BubbleSort implements SortUtil.Sort{ lh~<s2[R2  
^+URv  
/* (non-Javadoc) b.@H1L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F/xCG nP-  
*/ l_ZO^E~D_  
public void sort(int[] data) { 5U3qr*/;m  
int temp; ~@?"' !U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rI *!"PL  
if(data[j] SortUtil.swap(data,j,j-1); 5'62ulwMP=  
} +R9%~Z.=  
} Vv2{^ !aZ  
} Fdr*xHx$P  
} 2*Va9HP!q  
f@h2;An$w  
} [' ?^>jfr  
48:liR  
选择排序: \+G.]|"Y  
7 T mK  
package org.rut.util.algorithm.support; 8V,"Id][  
7t`E@dm  
import org.rut.util.algorithm.SortUtil; T0s35z9  
iF8@9m  
/** #gF2(iK6  
* @author treeroot ^uM_b  
* @since 2006-2-2 Imke/ =h  
* @version 1.0 k"5`:qL  
*/ \ hrBq^I  
public class SelectionSort implements SortUtil.Sort { I7A7X*  
Kq8 (d`g}  
/* sC!1B6:  
* (non-Javadoc) >,kL p|gA  
* bG "6pU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dZ.}j&ZH'  
*/ LgO i3  
public void sort(int[] data) { J1nXAh)J  
int temp; 'w'Dwqhmr  
for (int i = 0; i < data.length; i++) { U 7EHBW  
int lowIndex = i; Bl=nj.g  
for (int j = data.length - 1; j > i; j--) { ,n^TN{#  
if (data[j] < data[lowIndex]) { YfV"_G.ad|  
lowIndex = j; =jsx (3V   
} ZUv ZN f  
} =kwb` Z/a  
SortUtil.swap(data,i,lowIndex); 7Y%!,ff  
} 3L?WTS6(u  
} H U:1f)a a  
'_k>*trV  
} ful]OLV+  
hcd!A 5  
Shell排序: <zfO1~^  
=VCi8jDkP  
package org.rut.util.algorithm.support; /]pX8 d  
_RN/7\  
import org.rut.util.algorithm.SortUtil; W]} #\\$z  
u):X>??  
/** 9)#gtDM%J  
* @author treeroot Ewa[Y=+tx  
* @since 2006-2-2 "9)1K!tH  
* @version 1.0 Gs^(YGtU  
*/ 6{cybD`Ef&  
public class ShellSort implements SortUtil.Sort{ Bjurmo  
X@i+&Nv"<  
/* (non-Javadoc) rat=)n)"t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Na|#tPYI  
*/ (qNco8QKu3  
public void sort(int[] data) { U p_>y>x  
for(int i=data.length/2;i>2;i/=2){ Ngn\nkf  
for(int j=0;j insertSort(data,j,i); ;Gjv9:hUn  
} #Y/97_2 xa  
} 2qt=jz\s  
insertSort(data,0,1); qPp1:a"   
} Tbe_x s^  
7yo|ie@S  
/** 1-4   
* @param data Q,OkO?uY  
* @param j ztRWIkI q  
* @param i rd|@*^k  
*/ bv.EM  
private void insertSort(int[] data, int start, int inc) { ON:LPf>"-  
int temp; emGV]A%nss  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ; :v]NZtc  
} Q,[rrG;?@  
} }~7H2d);-  
} R tXF  
.q AQP L  
} ~,(0h:8  
113Z@F  
快速排序: SIKk|I)  
\DG( 8l  
package org.rut.util.algorithm.support; Yt\E/*%  
YR$tPe  
import org.rut.util.algorithm.SortUtil; .d<~a1k  
P58\+9d_  
/** jrDz7AfA  
* @author treeroot rU/-Wq`B  
* @since 2006-2-2 4v rm&k  
* @version 1.0 S/#) :,YS  
*/ MAsWds`bpB  
public class QuickSort implements SortUtil.Sort{ u.ULS3`C/X  
f]@[4<Ny  
/* (non-Javadoc) !Ei Ze.K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AlPL;^Y_l  
*/ O^QR;<t'  
public void sort(int[] data) { Y!K^-Y}  
quickSort(data,0,data.length-1); ;g;,%jdCS  
} 4<=eK7;XR  
private void quickSort(int[] data,int i,int j){ eukX#0/^  
int pivotIndex=(i+j)/2; z6GL,wo#  
file://swap cP}5}+  
SortUtil.swap(data,pivotIndex,j); C=xo&I7  
A"P\4  
int k=partition(data,i-1,j,data[j]); X=S}WKu  
SortUtil.swap(data,k,j); )?= kb  
if((k-i)>1) quickSort(data,i,k-1); ZwY`x')  
if((j-k)>1) quickSort(data,k+1,j); m? \#vw$  
G#_(7X&  
} :epitpJ  
/** e8WPV  
* @param data +lY\r +;  
* @param i :Su5  
* @param j OF<[Nh\.  
* @return -y7l?N5F>  
*/ ex;Y n{4  
private int partition(int[] data, int l, int r,int pivot) { s+OvS9et_  
do{ NKIkd  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0C4*F  
SortUtil.swap(data,l,r); IdN%f]=/  
} ":(Cpf0  
while(l SortUtil.swap(data,l,r); UcKWa>:Fi  
return l; rm7*l<v6  
} *YiD B?Si  
H4K(SGx  
} S[\cT:{OE  
8ESkG  
改进后的快速排序: _BeX7  
-7C=- \]  
package org.rut.util.algorithm.support; (AyRs7Dkn  
hs -}:^S`  
import org.rut.util.algorithm.SortUtil; #U6/@l)  
93zlfLS0  
/** DI2S %N l  
* @author treeroot DcFV^8O&  
* @since 2006-2-2 A ydy=sj  
* @version 1.0 uMq\];7I  
*/ 6 ^6uK  
public class ImprovedQuickSort implements SortUtil.Sort { cSHtl<UY  
B<|q{D$N/  
private static int MAX_STACK_SIZE=4096; $yR{ZFo  
private static int THRESHOLD=10; @eG#%6">  
/* (non-Javadoc) ] BP^.N=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l ")o!N?  
*/ Nt,]00S\w  
public void sort(int[] data) { Q>+_W2~]  
int[] stack=new int[MAX_STACK_SIZE]; hH|XtQ.n^  
s]V{}bY`  
int top=-1; $yxIE}  
int pivot; <)0LwkFtB  
int pivotIndex,l,r; zL[U;  
@N:3`[oB  
stack[++top]=0; m8j#{[NE  
stack[++top]=data.length-1; :jN;l  
G41$oalQ1  
while(top>0){ G1n>@Y'j''  
int j=stack[top--]; g'l7Jr3  
int i=stack[top--]; Q%b46"  
vp9E}ga  
pivotIndex=(i+j)/2; C9^elcdv  
pivot=data[pivotIndex]; ) Sh;UW  
~A{[=v  
SortUtil.swap(data,pivotIndex,j); u{y5'cJ{  
{3 yws 4  
file://partition | Y,X=Ed  
l=i-1; h hNFp  
r=j; >+W?!9[p:2  
do{ q=i,'.nS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h11bK'TIv  
SortUtil.swap(data,l,r); f<x t3  
} @o-evH;G  
while(l SortUtil.swap(data,l,r); !un"XI0`t<  
SortUtil.swap(data,l,j); rt4|GVa  
^c:eXoU  
if((l-i)>THRESHOLD){ ~m"M#1,ln3  
stack[++top]=i; ,19"[:WN  
stack[++top]=l-1; Q!$kUcky9  
} q?b)zeJ  
if((j-l)>THRESHOLD){ QH56tQq  
stack[++top]=l+1; VE+p&0  
stack[++top]=j; ohG43&g~  
} zJym`NF  
?eZ"UGZg'  
} boHm1hPKS  
file://new InsertSort().sort(data); 8C4@V[sm`  
insertSort(data); B\~3p4S  
} =?QQb>  
/** "nS{ ;:  
* @param data vcUM]m8k   
*/ W71#NjM2Z  
private void insertSort(int[] data) { ]{l O  
int temp; 'J<zVD}0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "\P~Re"EH  
} Ffqn|} gb  
} vskM;  
} 'Y/V9;`)s  
O"w_sw  
} LB 5EGw  
CpJXLc3_d5  
归并排序: Sr-^faL  
doUqUak  
package org.rut.util.algorithm.support; y#SD-# I-  
u K&_IE}  
import org.rut.util.algorithm.SortUtil; t`/RcAwA  
GVPEene  
/** 7*W$GCd8  
* @author treeroot SX94,5 _Q  
* @since 2006-2-2 AI`1N%Owi  
* @version 1.0 J*kzJ{vwy*  
*/ SOY#, Zu  
public class MergeSort implements SortUtil.Sort{ oZ>]8vw  
D}C*8s bC}  
/* (non-Javadoc) +]2~@=<@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uTF EI.N  
*/ h3 ZL0Fi*  
public void sort(int[] data) { J};,%q_  
int[] temp=new int[data.length]; p~ VW3u]  
mergeSort(data,temp,0,data.length-1); # SOj4W  
} %y~]3XWik  
yH0ZSv  
private void mergeSort(int[] data,int[] temp,int l,int r){ LGue=Hkp  
int mid=(l+r)/2; LWR &(p.%  
if(l==r) return ; @G&xq "Fg7  
mergeSort(data,temp,l,mid); &_TjRj"  
mergeSort(data,temp,mid+1,r); *" +cP!  
for(int i=l;i<=r;i++){ G@6,O-Sj  
temp=data; Lr]Hvd   
} ))-M+CA  
int i1=l; Fd=`9N9  
int i2=mid+1; Hm[!R:HW,S  
for(int cur=l;cur<=r;cur++){ ty8!"-V1  
if(i1==mid+1) pNsLoNZ3w  
data[cur]=temp[i2++]; _ q1|\E%`h  
else if(i2>r) LR.+C xQ  
data[cur]=temp[i1++]; 3Q"+ #Ob  
else if(temp[i1] data[cur]=temp[i1++]; ml/O  
else T`G"2|ISS  
data[cur]=temp[i2++]; y`dzo`f  
} 1Ac1CsK*  
} P.P>@@+d  
0u9h2/ma  
} +Ea X S  
nA j2k  
改进后的归并排序: CT`X~y10  
4(gf!U  
package org.rut.util.algorithm.support; h0pr"]sO;$  
md s\~l73  
import org.rut.util.algorithm.SortUtil; (HxF\#r?  
qa?y lR"kA  
/** J8'zvH&I  
* @author treeroot (`xnA~BN  
* @since 2006-2-2 ~(S4/d5  
* @version 1.0 jgIzB1H  
*/ a"4 6_>  
public class ImprovedMergeSort implements SortUtil.Sort { TR20{8"  
)T_ #X!  
private static final int THRESHOLD = 10; &9{BuBO[  
*5)!y d  
/* CxV%/ChJ#  
* (non-Javadoc) &o.SmkJI  
* }5U f`pM8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b5R*]  
*/ a QFHB!  
public void sort(int[] data) { VV0$L=mo  
int[] temp=new int[data.length]; l"8YIsir  
mergeSort(data,temp,0,data.length-1); P!EX;+7+x  
} $Plk4 o*g  
1 doqznO  
private void mergeSort(int[] data, int[] temp, int l, int r) { PMcyQ2R->  
int i, j, k; <i-RF-*S  
int mid = (l + r) / 2; f6)H!SI  
if (l == r) 8),Y|4  
return; {VG6m Hw  
if ((mid - l) >= THRESHOLD) @dNbL}qQ  
mergeSort(data, temp, l, mid); QR4o j  
else ,PY e7c  
insertSort(data, l, mid - l + 1); 2_Z6 0]  
if ((r - mid) > THRESHOLD) RU=%yk-gM  
mergeSort(data, temp, mid + 1, r); O/Vue  
else "/5b3^a  
insertSort(data, mid + 1, r - mid); sTDBK!9I  
c/RG1w  
for (i = l; i <= mid; i++) { LJD"N#c   
temp = data; Ai;Pht9qi  
} _1ins;c52  
for (j = 1; j <= r - mid; j++) { Qs a2iw{  
temp[r - j + 1] = data[j + mid]; \z 'noc  
} yr?\YKV)I  
int a = temp[l]; 566EMy|  
int b = temp[r]; -/X-.#}-  
for (i = l, j = r, k = l; k <= r; k++) { 2ip~qZNw><  
if (a < b) { *O~D lf  
data[k] = temp[i++]; G`jhzG  
a = temp; d<o  
} else { ^_uzr}LE`  
data[k] = temp[j--]; =RA6p  
b = temp[j]; aF:LL>H  
} XJ"9D#"a>  
} V]2Q92  
} -84Z8?_  
V.J%4&^X  
/** ZfU_4Pl->  
* @param data @u^Ib33  
* @param l 43Q&<r$[T  
* @param i <9"i_d%  
*/ CJ_B.  
private void insertSort(int[] data, int start, int len) { Z5Cv$bUc  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W3b\LnUa  
} ~X/T6(n$  
} [>E0(S]  
} 4.8,&{w<m  
} 0^=S:~G  
#qWEyb2UZ  
堆排序: 0:*$i(2  
4J  s>yP  
package org.rut.util.algorithm.support; dZ*o H#B  
'py k  
import org.rut.util.algorithm.SortUtil; #!2gxm;g  
(w*$~p  
/** ?~!h N,h  
* @author treeroot Rd2[xk  
* @since 2006-2-2 (<12&=WxE  
* @version 1.0 wZ^/-  
*/ [kCn6\_<V  
public class HeapSort implements SortUtil.Sort{ p: o*=  
.#X0P=  
/* (non-Javadoc) <YC{q>EMc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  [7bY(  
*/ W6pS.}  
public void sort(int[] data) { jV(IS D  
MaxHeap h=new MaxHeap(); B~^\jRd "  
h.init(data); ^JTfRZ :a  
for(int i=0;i h.remove(); ?@~FT1"6G  
System.arraycopy(h.queue,1,data,0,data.length); f*Kipgp  
} {1o=/&  
}V 1sY^C  
private static class MaxHeap{ 0t) IW D  
fqcyCu7Ep  
void init(int[] data){ hm& ~6rB  
this.queue=new int[data.length+1]; ZrTq)BZ  
for(int i=0;i queue[++size]=data; _Qv4;a  
fixUp(size); )YZ41K5N  
} _u>+H#  
} 8)i\d`  
,"D1!0  
private int size=0; G 5)?!  
_?{2{^v  
private int[] queue; &rn,[w_F[  
_2|,j\f;L  
public int get() { #8PjYB  
return queue[1]; W?@ ;(k  
} /fX]Yu  
$1axZ~8sS  
public void remove() { O @w=  
SortUtil.swap(queue,1,size--); H:|yu  
fixDown(1); <a'j8pw9i  
} Z8m/8M  
file://fixdown f~]5A%=cZ  
private void fixDown(int k) { WYq, i}S  
int j; \UXQy{Ex  
while ((j = k << 1) <= size) { PgVM>_nHk  
if (j < size %26amp;%26amp; queue[j] j++; ar6Z?v$  
if (queue[k]>queue[j]) file://不用交换 3LEN~ N}  
break; DU;]Q:r{  
SortUtil.swap(queue,j,k); A) qOJ(OEz  
k = j; u", [ulP  
} KmMt:^9  
} 8J)x>6  
private void fixUp(int k) { O". #B  
while (k > 1) { Z I8p(e  
int j = k >> 1; C}M0KDF  
if (queue[j]>queue[k]) hVd63_OO  
break; QPBf++|  
SortUtil.swap(queue,j,k); +'[iyHBJ  
k = j; 3m x7[Q  
} ;N)qNiJY  
} cM55 vVd  
er97&5  
} b7\nCRY  
3c6<JW  
} _3)~{dQ+  
j3$KYf`T}  
SortUtil: f1Rm9``  
RNm/&F1C$  
package org.rut.util.algorithm; _Wgg=A"G  
jML}{>Gy8S  
import org.rut.util.algorithm.support.BubbleSort; -`rz[";n  
import org.rut.util.algorithm.support.HeapSort; ](%-5G1<  
import org.rut.util.algorithm.support.ImprovedMergeSort; r1,RloyZS  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,#s}nJ4  
import org.rut.util.algorithm.support.InsertSort; 9D&ocV3QV  
import org.rut.util.algorithm.support.MergeSort; grv 3aa@  
import org.rut.util.algorithm.support.QuickSort; xNT[((  
import org.rut.util.algorithm.support.SelectionSort; $[IuEdc/  
import org.rut.util.algorithm.support.ShellSort; _v_ak4m>  
+|^rz#X  
/** P}cGWfj  
* @author treeroot d~qDQ6!  
* @since 2006-2-2 m,-:(82  
* @version 1.0 vh((HS-)  
*/ K !`tEW[  
public class SortUtil { :[,n`0lH  
public final static int INSERT = 1; 0'a.Ypf  
public final static int BUBBLE = 2; {AJs pLcG  
public final static int SELECTION = 3; L> cTI2NB.  
public final static int SHELL = 4; x H\5T!  
public final static int QUICK = 5; !)ee{CwNc  
public final static int IMPROVED_QUICK = 6; d6wsT\S  
public final static int MERGE = 7; [0  3Aej  
public final static int IMPROVED_MERGE = 8; 1XwbsKQ}  
public final static int HEAP = 9; ,b2Cl[  
FLi)EgZXt  
public static void sort(int[] data) { =EFF2M`F  
sort(data, IMPROVED_QUICK); ao Y "uT+  
} SeKU ?\  
private static String[] name={ !5pnl0DK*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O"^KX5  
}; gR%fv  
_8kZ>w(L  
private static Sort[] impl=new Sort[]{ z0a=A:+/  
new InsertSort(), F $B _;G  
new BubbleSort(), cu.f]'  
new SelectionSort(), 9FK%"s`  
new ShellSort(), xoPpu  
new QuickSort(), m\[r6t]V  
new ImprovedQuickSort(), |6$6Za]:  
new MergeSort(), mI@]{K}Q%  
new ImprovedMergeSort(), |R DPx6!V  
new HeapSort() Q!MS_ #O  
}; YS%HZFY, "  
_r&`[@m  
public static String toString(int algorithm){ v 6Tz7  
return name[algorithm-1]; !\2Xr{f  
} tyNT1F{  
~`(#sjr6KR  
public static void sort(int[] data, int algorithm) { Y@F@k(lOo  
impl[algorithm-1].sort(data); mZ'`XAS~;  
} +wr2TT~  
;i>|5tEy  
public static interface Sort { cd#@"&r  
public void sort(int[] data); NO8)XJ3s  
} _5y3<H<?  
U)o(}:5xF  
public static void swap(int[] data, int i, int j) { ?x=;?7  
int temp = data; LDx1@a|83  
data = data[j]; +.:- :  
data[j] = temp; N!{('po  
} 8:TN,p  
} D `c YQ-  
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