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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。 4SCb9| /Q  
插入排序: aF2 eGh  
QFU;\H/  
package org.rut.util.algorithm.support; m:5*:Ii.  
3C 84b/A  
import org.rut.util.algorithm.SortUtil; ${0+LhST  
/** k<wX??'  
* @author treeroot S9d+#6rn  
* @since 2006-2-2 gm~Ka%O|F  
* @version 1.0 NX&mEz  
*/ km,}7^?F0r  
public class InsertSort implements SortUtil.Sort{ mV^+`GWvo  
I$xfCu  
/* (non-Javadoc) G`!#k!&r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /f~ V(DK  
*/ | VPs5  
public void sort(int[] data) { rD<G_%hP  
int temp; kKAK;JQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9:"%j  
} He}qgE>Us  
} 0M(\xO  
} li;Np5P  
+RQlMAB  
} ~F~g$E2 }  
"gjy+eosY  
冒泡排序: Qc#<RbLL  
ba& \~_4  
package org.rut.util.algorithm.support; pE@Q (9`b{  
b/cc\d<  
import org.rut.util.algorithm.SortUtil; T5?@'b8F6  
;V`e%9 .  
/** Q+'mBi}  
* @author treeroot 0][PL%3Z  
* @since 2006-2-2 a<7Ui;^@  
* @version 1.0 'hfQ4EN  
*/ ]f#ZU{A'mt  
public class BubbleSort implements SortUtil.Sort{ -8;U1^#  
<iVn!P  
/* (non-Javadoc) fiqeXE?E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U1G"T(;s:  
*/ u!?cKZw  
public void sort(int[] data) { 5xX*68]%  
int temp; L^uO.eI"m  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $50A!h  
if(data[j] SortUtil.swap(data,j,j-1); &+;z`A'|8  
} vggyQf%  
} zC #[  
} ^55#!/9  
} Jj4!O3\I  
+#7 e?B  
} 3<sYxA\?w  
pE<dK.v6  
选择排序: (b%&DyOt  
8sjAr.iT.  
package org.rut.util.algorithm.support; pYIm43r H  
VSP6osX{  
import org.rut.util.algorithm.SortUtil; |1C=Ow*"  
VCfa<hn  
/** U|VF zpJ  
* @author treeroot 2Sbo7e  
* @since 2006-2-2 B'"(qzE-kM  
* @version 1.0 xU+c?OLi  
*/ <|9s {z  
public class SelectionSort implements SortUtil.Sort { l\< *9m<  
>utm\!Gac  
/* INqD(EG   
* (non-Javadoc) KR4X&d6  
* BS*IrH H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [F{q.mZj  
*/ $\?BAkx  
public void sort(int[] data) { E uxD,(  
int temp; s"*ZQ0OaD  
for (int i = 0; i < data.length; i++) { dlkxA^  
int lowIndex = i; D]n9+!Ec1f  
for (int j = data.length - 1; j > i; j--) { W,dqk=n  
if (data[j] < data[lowIndex]) { de{@u<Y Zb  
lowIndex = j; F,}wQ N  
} \nT, NV11  
} k/bY>FY2r  
SortUtil.swap(data,i,lowIndex); MebL Y $&8  
} E-jL"H*  
} `%_yRJd|;  
e<o{3*%p)  
} O2./?Ye  
A3D"b9<D  
Shell排序: UkK`5p<D7  
>__t 2  
package org.rut.util.algorithm.support; uj#bK 7  
7`-fN|  
import org.rut.util.algorithm.SortUtil;  l%XuYYQ  
AX=$r]_  
/** {`~uBz+dJq  
* @author treeroot *9.4AW~]X  
* @since 2006-2-2 x9S~ns+r  
* @version 1.0 L-Qc[L  
*/ s/#L?[YH  
public class ShellSort implements SortUtil.Sort{ Xm,w.|dx  
1KwUp0% &  
/* (non-Javadoc) iV<4#aBg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )fSO|4   
*/ S%J$.ge  
public void sort(int[] data) { Dn/{  s$\  
for(int i=data.length/2;i>2;i/=2){ j)?[S  
for(int j=0;j insertSort(data,j,i); NvCq5B$C  
} S9BwCKH  
} O6JH)Ka"S  
insertSort(data,0,1); j"g[qF/*  
} NKyaR_q`  
5WJof`M  
/** +b@KS"3h  
* @param data PNVYW?l  
* @param j anLSD/'4W  
* @param i b5WtL+Z  
*/ 4rkj$  
private void insertSort(int[] data, int start, int inc) { 1=Npq=d  
int temp; w0W9N%f#=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pxC:VJ;  
} 3i1e1Lj1  
} EG=~0j~  
} fsd,q?{a:  
J3/2>N]/}  
} +M@p)pyu  
o2p;$W4`  
快速排序: hH Kd+QpI  
` s [77V>  
package org.rut.util.algorithm.support; 7nr+X Os  
iIrH&}2  
import org.rut.util.algorithm.SortUtil; 6,Aj5jG  
:)7{$OR&  
/** $TU)O^c  
* @author treeroot mx\b6w7  
* @since 2006-2-2 jm~(OLg  
* @version 1.0 D9.H<.|36  
*/ -<e8\Z`  
public class QuickSort implements SortUtil.Sort{ OJX* :Q  
"h.-qQGU%  
/* (non-Javadoc) B,rpc\_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZWJ%t'kF  
*/ `*?8<Vm  
public void sort(int[] data) { Wp5w}8g  
quickSort(data,0,data.length-1); W>jgsR79M  
} yxv]G6  
private void quickSort(int[] data,int i,int j){ uh,~Cv XU]  
int pivotIndex=(i+j)/2; > wsS75n1  
file://swap T\}?  
SortUtil.swap(data,pivotIndex,j); t4HDt\}&k~  
St9+/Md=jQ  
int k=partition(data,i-1,j,data[j]); &dA{<.  
SortUtil.swap(data,k,j); [Ol}GvzJ7  
if((k-i)>1) quickSort(data,i,k-1); s Yp?V\Y"  
if((j-k)>1) quickSort(data,k+1,j); Ekq&.qjYG"  
]*fiLYe9  
} &+"-'7  
/** 2Mqac:L  
* @param data "Yh[-[,  
* @param i wD9Gl.uQ  
* @param j bD*z"e  
* @return . Y@)3  
*/ w?u4-GT  
private int partition(int[] data, int l, int r,int pivot) { e* 2ay1c  
do{ OXT'$]p.*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s+mNr3  
SortUtil.swap(data,l,r); t?bc$,S"\(  
} y~ubH{O#  
while(l SortUtil.swap(data,l,r); -v]v m3Na  
return l; F|Y}X|x8Q  
} p~X=<JM  
ChVur{jR  
} >LqW;/&S<  
:i{$p00 G  
改进后的快速排序: YG AB2`!U  
zpPzXQv]/  
package org.rut.util.algorithm.support; JI&ik_k3  
{u 7%Z}<0  
import org.rut.util.algorithm.SortUtil; {3V%  
;0R|#9oX_  
/** ^LaOl+;S  
* @author treeroot f[S$ Gu4-  
* @since 2006-2-2 N\ Nwmx  
* @version 1.0 SLCV|@G  
*/ pUTC~|j%:  
public class ImprovedQuickSort implements SortUtil.Sort { V%kZ-P*  
{'(1c)q>  
private static int MAX_STACK_SIZE=4096; 0iy-FV;J  
private static int THRESHOLD=10; u+U '|6)E  
/* (non-Javadoc) I\8f`l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]g}Tqf/N%  
*/ ]t4 9Efw  
public void sort(int[] data) { _1<zpHp  
int[] stack=new int[MAX_STACK_SIZE];  G{4~{{tI  
:Fv d?[  
int top=-1; 7&I+mw/X  
int pivot; RU r0K#]  
int pivotIndex,l,r; 6[iuCMOZ  
| .8lS3C  
stack[++top]=0; ,7wxVR%Ys  
stack[++top]=data.length-1; KN41 kkN  
aWtyY[=  
while(top>0){ O-5s}RT  
int j=stack[top--]; ^N{Lau  
int i=stack[top--]; +x?_\?&Ks  
VW," dmC  
pivotIndex=(i+j)/2; 7mUpn:U  
pivot=data[pivotIndex]; R78=im7  
\&|zD"*  
SortUtil.swap(data,pivotIndex,j); *jAw  
vocXk_  
file://partition 4^? J BpBZ  
l=i-1; w_*UFLMSqR  
r=j; Dg:2*m_!j{  
do{ 4nIs+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >_ )~"Ra  
SortUtil.swap(data,l,r); {e>E4(  
} IV#kF}9$  
while(l SortUtil.swap(data,l,r); +N~?_5lv\s  
SortUtil.swap(data,l,j); &HS6}  
s :4<wmu4=  
if((l-i)>THRESHOLD){ hM": ?Rx  
stack[++top]=i; ."8bW^:  
stack[++top]=l-1; z } L3//  
} &n|S:"B  
if((j-l)>THRESHOLD){ Y<A593  
stack[++top]=l+1; h3B s  
stack[++top]=j; ISp'4H7R+N  
} G:n,u$2a<  
:tc]@0+  
} qQL]3qP  
file://new InsertSort().sort(data); xe4F4FC'  
insertSort(data); N[(ovr  
} D$ >gAv  
/** {95z\UE}  
* @param data hH=H/L_Z  
*/ 4V$DV!dPQ}  
private void insertSort(int[] data) { a0s6G3J+9  
int temp; Hl@)j   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U ?%1:-#F  
} Z(' iZ'55F  
} M-  f)\`I  
} 0Q2P"1>KT/  
E0g` xf 6c  
} _~^JRC[q  
jK#[r[q{  
归并排序: ;bC163[  
x{$~u2|  
package org.rut.util.algorithm.support; 2g)W-M  
L`fDc  
import org.rut.util.algorithm.SortUtil; pi'w40!:  
@kq~q;F  
/** ~ jR:oN  
* @author treeroot G^Z SQ!  
* @since 2006-2-2 ZTq"SQ>ym  
* @version 1.0 3Pb]Of#  
*/ E"EBj7<s  
public class MergeSort implements SortUtil.Sort{ ddf# c,SQ  
L_3undy,  
/* (non-Javadoc) #0i] g)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =h`yc$ A(2  
*/ $m.e}`7SF!  
public void sort(int[] data) { c<'Pt4LY  
int[] temp=new int[data.length]; _N.N?>  
mergeSort(data,temp,0,data.length-1); 0st)/\  
} ( TQx3DGq  
[&Kn&bdKW  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9M$=X-  
int mid=(l+r)/2; "y%S.ipWG  
if(l==r) return ; [Rqv49n*V  
mergeSort(data,temp,l,mid); ,ZVC@P,L  
mergeSort(data,temp,mid+1,r); }'?N+MN  
for(int i=l;i<=r;i++){ Bf&,ACOf  
temp=data; SiD [54OM  
} oGK 1D  
int i1=l; }RGp)OFY&  
int i2=mid+1; pa7Iz^i  
for(int cur=l;cur<=r;cur++){ uP'x{Pr)  
if(i1==mid+1) +) pO82  
data[cur]=temp[i2++]; '>GZB  
else if(i2>r) 9~6FWBt  
data[cur]=temp[i1++]; $"+ahS<?tC  
else if(temp[i1] data[cur]=temp[i1++]; a0vg%Z@!  
else De^GWO.?bT  
data[cur]=temp[i2++]; YS}uJ&WoF  
} e}Y|' bG  
} g$++\%k&  
MX=mGfoa  
} Kr$ w"]  
3Mvm'T:[  
改进后的归并排序: -y8?"WB(b  
:R/szE*Ak  
package org.rut.util.algorithm.support; `|p3@e  
kIHfLwh9N  
import org.rut.util.algorithm.SortUtil; B&l5yI b  
L'1p]Z"  
/** DEGEr-  
* @author treeroot Ms^U`P^V~P  
* @since 2006-2-2 :hre|$@{a  
* @version 1.0 E!d;ym  
*/ r!qr'Ht<  
public class ImprovedMergeSort implements SortUtil.Sort { Iz'*^{Ssm  
!N6/l5kn  
private static final int THRESHOLD = 10; Up61Xn  
_N4G[jQLJ  
/* &zl=}xeA  
* (non-Javadoc) N :#"4e  
* u$7o d$&S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pi>,>-Z  
*/ t)Iu\bP  
public void sort(int[] data) { '\I.P  
int[] temp=new int[data.length]; p'lL2 n$E  
mergeSort(data,temp,0,data.length-1);  !,rp|  
} gZ!vRO <%  
lyBae?%&  
private void mergeSort(int[] data, int[] temp, int l, int r) { YlI/~J  
int i, j, k; YT)jBS~&  
int mid = (l + r) / 2; O|t@p=]  
if (l == r) fc'NU(70c  
return; faqOGAb  
if ((mid - l) >= THRESHOLD) nf,R+oX  
mergeSort(data, temp, l, mid); CzP?J36W^  
else 3` ov?T(H  
insertSort(data, l, mid - l + 1); nLn3kMl4  
if ((r - mid) > THRESHOLD) b' 1%g}  
mergeSort(data, temp, mid + 1, r); oy I8}s:  
else Tw:j}ERq  
insertSort(data, mid + 1, r - mid); 2}Ga   
z1LN|+\}  
for (i = l; i <= mid; i++) { 0dv# [  
temp = data; xPFNH`O&  
} OH2Xxr[bQ  
for (j = 1; j <= r - mid; j++) { 2s(c#$JVS  
temp[r - j + 1] = data[j + mid]; dLV>FpA\  
} y be:u  
int a = temp[l]; V%F^6ds$]0  
int b = temp[r]; ;pK/t=$  
for (i = l, j = r, k = l; k <= r; k++) { #KC& ct  
if (a < b) { MP5 vc5[  
data[k] = temp[i++]; -;/;dz;  
a = temp; LvlVZjT  
} else { >w,o|  
data[k] = temp[j--]; R`? '|G]P  
b = temp[j]; 0 K T.@P  
} q;&\77i$  
} FerQA9K)x  
} lTl-<E;  
Czj]jA(0f  
/** fq-zgqF<  
* @param data 3lw KV  
* @param l (;RmfE'PX  
* @param i "bI'XaSv  
*/ )%8 ;C]G;  
private void insertSort(int[] data, int start, int len) { c{YBCWA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aRPpDSR?l  
} W(^R-&av  
} G}!dm0s$  
} ~Z74e>V%  
} _J'V5]=4  
:~K c"Pg  
堆排序: oD_n+95B  
IYeX\)Gv&  
package org.rut.util.algorithm.support; )f#raXa5+  
blbL49;  
import org.rut.util.algorithm.SortUtil; o:`>r/SlL  
AfU~k!4`  
/** WCK;r{p%I  
* @author treeroot FW](GWp`:  
* @since 2006-2-2 S8 +GM  
* @version 1.0 Q8] lz}  
*/ L9,;zkgo  
public class HeapSort implements SortUtil.Sort{ 0L3v[%_j"  
O=2"t%Gc  
/* (non-Javadoc) {0a (R2nB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xq#YBi,  
*/ du,mbTQib  
public void sort(int[] data) { [sxJ<  
MaxHeap h=new MaxHeap(); ,,U8X [A  
h.init(data); oD0WHp  
for(int i=0;i h.remove(); uc>u=kEue  
System.arraycopy(h.queue,1,data,0,data.length); in>Os@e#  
} z?ck*9SZX  
l* ~".q;S  
private static class MaxHeap{ M1{ru~Z9  
'@~\(SH  
void init(int[] data){ \Y37wy4  
this.queue=new int[data.length+1]; m tPmVze  
for(int i=0;i queue[++size]=data; cV=0)'&<`_  
fixUp(size); O+8]y4%5  
} u"WqI[IV  
} "x;|li3;  
3aD\J_  
private int size=0; 0l.\KF  
'/2u^&W  
private int[] queue; pDw^~5P  
,C4gA(')K  
public int get() { |wef[|@%  
return queue[1]; |f9fq~'1e  
} {jnfe}]  
<oFZFlY@  
public void remove() { =f FTi1]/h  
SortUtil.swap(queue,1,size--); E=G"_ ^hCE  
fixDown(1); Zo=w8Hr  
} I.C,y\  
file://fixdown NeG$;z7  
private void fixDown(int k) { y(^hlX6gQ  
int j; O r {9?;G  
while ((j = k << 1) <= size) { #3fS_;G  
if (j < size %26amp;%26amp; queue[j] j++; MST\_s%[  
if (queue[k]>queue[j]) file://不用交换 mpsi{%gA  
break;  l,}^<P]  
SortUtil.swap(queue,j,k); =g]Ln)jc  
k = j; R 4= ~  
} itH` s<E  
} 17hFwo`  
private void fixUp(int k) { ';HNQe?vT  
while (k > 1) { k15fy"+Ut  
int j = k >> 1; hv]}b'M$  
if (queue[j]>queue[k]) orT%lHwjL  
break; wD*z >v$  
SortUtil.swap(queue,j,k); !(%^Tg=  
k = j; m+jW+  
} Cf~H9  
} TGSUbBgU  
#kmZS/"  
} N;\G=q] 9  
>~+'V.CNW  
} CLQE@kF;  
;%#.d$cU  
SortUtil: MLd*WpiI.  
am+'j5`Ys  
package org.rut.util.algorithm; N:4oVi@Je  
P#gY-k&Nr  
import org.rut.util.algorithm.support.BubbleSort; AK$h S M  
import org.rut.util.algorithm.support.HeapSort; [{K   
import org.rut.util.algorithm.support.ImprovedMergeSort; ( E8(np  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZUkrJ'  
import org.rut.util.algorithm.support.InsertSort; :)~idVlV  
import org.rut.util.algorithm.support.MergeSort; V~9vf*X  
import org.rut.util.algorithm.support.QuickSort; /o/0 9K  
import org.rut.util.algorithm.support.SelectionSort; ">-mZ'$#L  
import org.rut.util.algorithm.support.ShellSort; :J 7p=sX  
?PpGBm2f*  
/** Kuj*U'ed7t  
* @author treeroot 7 3 Oo;  
* @since 2006-2-2 E/<5JhI9~  
* @version 1.0 :o2^?k8k&#  
*/ TB oN8cB}  
public class SortUtil { ~|FKl%  
public final static int INSERT = 1; K3CTxU(  
public final static int BUBBLE = 2; ?zS t  
public final static int SELECTION = 3; J)148/  
public final static int SHELL = 4; JGLjx"Y  
public final static int QUICK = 5; JA")L0a_  
public final static int IMPROVED_QUICK = 6; #z( JYw,  
public final static int MERGE = 7; x)^/3  
public final static int IMPROVED_MERGE = 8; vX9B^W||x  
public final static int HEAP = 9; #]g9O?0$  
&efwfnG<  
public static void sort(int[] data) { J2va Kl  
sort(data, IMPROVED_QUICK); ]j^V5y"  
} 2 c%*u {=:  
private static String[] name={ $@VQ{S  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BGe&c,feIc  
}; $<]G#&F   
C>A*L4c]F  
private static Sort[] impl=new Sort[]{ JQ[~N-  
new InsertSort(), mbZS J  
new BubbleSort(), f^EDiG>b`  
new SelectionSort(), /d1 B-I  
new ShellSort(), 65@,FDg*i  
new QuickSort(), sF+mfoMtG  
new ImprovedQuickSort(), KRL9dD,&  
new MergeSort(), >k\lE(  
new ImprovedMergeSort(), &*w)/W  
new HeapSort() 7yp}*b{s  
}; e>GX]tK  
QcXqMx  
public static String toString(int algorithm){ ,hggmzA~  
return name[algorithm-1]; N~Kl{" >`  
} SL j2/B0  
x|TLMu=3=  
public static void sort(int[] data, int algorithm) { qh40nqS;9  
impl[algorithm-1].sort(data); L_k'r\L  
} =Nc}XFq  
G#|`Bjv"aP  
public static interface Sort { L#\!0YW/@  
public void sort(int[] data); 0-N"_1k|?  
} ;:^^Qfp  
*8a8Ng  
public static void swap(int[] data, int i, int j) { H*h7Y*([  
int temp = data; +OM9v3qJ  
data = data[j]; 5LIbHSK  
data[j] = temp; gM5`UH|  
} O|Z5SSlk  
} mvCH$}w8&  
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3+5=?,请输入中文答案:八 正确答案:八