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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。 =pr7G+_u  
插入排序: VN.Je: Ju  
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package org.rut.util.algorithm.support; }B^tL$k  
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import org.rut.util.algorithm.SortUtil; E`J@h l$N  
/** QWU-m{@~&  
* @author treeroot X-/]IH DN  
* @since 2006-2-2 3U}%2ARo_  
* @version 1.0 ^f@=:eWI  
*/ (At$3b6  
public class InsertSort implements SortUtil.Sort{ @+DX.9  
DfB7*+x{  
/* (non-Javadoc) #Q5o)x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tBSW|0  
*/ MfkZ  
public void sort(int[] data) { {)Xy%QV  
int temp; &j6erwaT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /V By^L:  
} "jCu6Rjd  
} < Z$J<]I  
} 3gzXbP,  
yQrD9*t&g  
} 0 "#HJA44  
.]Z"C&"N]  
冒泡排序: T{'RV0%   
('~LMu_  
package org.rut.util.algorithm.support; D'4\*4is  
ULW~90  
import org.rut.util.algorithm.SortUtil; W3RT{\  
JS77M-Ac  
/** t,' <gI  
* @author treeroot $d4n"+7  
* @since 2006-2-2 AwN!;t_0+N  
* @version 1.0 !'Kj x  
*/ `mqMLo *  
public class BubbleSort implements SortUtil.Sort{ \NC3'G:Ii  
nFn5v'g  
/* (non-Javadoc) N g,j#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :EyD+!LJ  
*/ E"0>yl)  
public void sort(int[] data) { >d6|^h'0  
int temp; mc3"`+o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4+ig' |o  
if(data[j] SortUtil.swap(data,j,j-1); {Ha57Wk8D  
} M3AXe]<eC1  
} Pc9H0\+Xk  
} ] R*A  
} @PU [:;  
PW4q~rc=:  
} ntY]SK%Z  
SX*RP;vHy  
选择排序:  _4f;<FL  
v>56~AJ  
package org.rut.util.algorithm.support; <vP=zk  
D,6:EV"sa  
import org.rut.util.algorithm.SortUtil; t&p|Ynz?i  
Dzbz)Zst  
/** 3a|\dav%  
* @author treeroot  3CJwj  
* @since 2006-2-2 nP$9CA  
* @version 1.0 ElXFeJ%[G  
*/ s@C}P  
public class SelectionSort implements SortUtil.Sort { =Sv/IXX\di  
y}H!c;  
/* \Cj B1] I  
* (non-Javadoc) 7 d vnupLh  
* `x|?&Ytmf9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p#Bi>/C6  
*/ Z ]ONh  
public void sort(int[] data) { <}LC~B!  
int temp; ;PH~<T  
for (int i = 0; i < data.length; i++) { #1[u (<AS  
int lowIndex = i; U6VKMxSJ  
for (int j = data.length - 1; j > i; j--) { BuwY3F\-O  
if (data[j] < data[lowIndex]) { Xeaj xcop#  
lowIndex = j; 4R*,VR.K  
} `2snz1>!j  
} u&NV,6Fj2[  
SortUtil.swap(data,i,lowIndex); y)pk6d   
} }M+7 T\ J!  
} M?qy(zb  
$u.z*b_yy  
} D]}G.v1  
+d>IHpt  
Shell排序: .u:GjL'$  
a =QCp4^  
package org.rut.util.algorithm.support; z:;CX@)*  
,s(,S  
import org.rut.util.algorithm.SortUtil; ZW}_DT0  
l ,8##7  
/** MPV5P^@X  
* @author treeroot #F#%`Rv1  
* @since 2006-2-2 nK,w]{<wG!  
* @version 1.0 g){<y~Mk  
*/ RZ7@cQY  
public class ShellSort implements SortUtil.Sort{ >/|*DI-HJ  
Uv.)?YeGh  
/* (non-Javadoc) 40/Y\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TNth   
*/ +0~YP*I`/  
public void sort(int[] data) { ]! dTG  
for(int i=data.length/2;i>2;i/=2){ ;fJ.8C  
for(int j=0;j insertSort(data,j,i); TN.rrop`#g  
} /\Ef%@  
} Fp:'M X  
insertSort(data,0,1); @VBcJ{e,  
} "#]$r  
:0ep( <|;  
/** OnK4] S5  
* @param data : 'c&,oLY  
* @param j xmG<]WF>E  
* @param i {FG j]*  
*/ ""H?gsL[  
private void insertSort(int[] data, int start, int inc) { N$DkX)Z  
int temp; *Uh!>Iv;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d@^ZSy>L2  
} u"8yK5!  
} Q@niNDaW2  
} zTp"AuNHN  
w@ pPcZ>z/  
} n ;Ei\\p!  
U17d>]ka  
快速排序: ~zgGa:uU  
7"##]m.  
package org.rut.util.algorithm.support; Kgv T"s.  
%$I;{-LD  
import org.rut.util.algorithm.SortUtil; rUl+  
U(Zq= M  
/** 9z0p5)]n>  
* @author treeroot >Q/Dk7#  
* @since 2006-2-2 VQs5"K"  
* @version 1.0 C}X\|J  
*/ :U\tv[  
public class QuickSort implements SortUtil.Sort{ ,bd_:  
5bIw?%dk(  
/* (non-Javadoc) y9;Yiv r)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =vPj%oLp'a  
*/ lk!@?  
public void sort(int[] data) { CAe!7HiR  
quickSort(data,0,data.length-1); ;`Z{7'^U  
} GVz6-T~\>  
private void quickSort(int[] data,int i,int j){ *_e3 @g  
int pivotIndex=(i+j)/2; N;R^h? '  
file://swap q| 7(  
SortUtil.swap(data,pivotIndex,j); ==B6qX8T  
lMt=|66  
int k=partition(data,i-1,j,data[j]); O2+6st  
SortUtil.swap(data,k,j); edD)TpmE,  
if((k-i)>1) quickSort(data,i,k-1); (BM47 D=v  
if((j-k)>1) quickSort(data,k+1,j); .d*8C,  
jylD6IT  
} ye97!nIg@  
/** B:<VA=  
* @param data 5^cCY'I  
* @param i 5xBbrU;  
* @param j =%7-ZH9  
* @return _M1%Z~  
*/ /xQTxh1;K  
private int partition(int[] data, int l, int r,int pivot) { NRuNKl.v  
do{ Fu~j8K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I'Hf{Erw  
SortUtil.swap(data,l,r); gr{ DWCK  
} z{543~Og59  
while(l SortUtil.swap(data,l,r); ]iWRo'  
return l; IgzQr >  
} 3R/bz0 V>  
'R)Tn!6  
} KoRV %@I  
rjP/l6 ~'  
改进后的快速排序: @CoIaUVP  
lYIH/:T  
package org.rut.util.algorithm.support; 7=uj2.J6  
iCoX& "lb  
import org.rut.util.algorithm.SortUtil; WAqINLdX  
_g8yDfcLG  
/** J4'eI[73  
* @author treeroot y7{?Ip4[  
* @since 2006-2-2 yauvXosX  
* @version 1.0 LD?sh"?b  
*/ @iiT<  
public class ImprovedQuickSort implements SortUtil.Sort { hoP]9&<T  
/ 1RpM]d  
private static int MAX_STACK_SIZE=4096; W)/#0*7  
private static int THRESHOLD=10; 5G#n"}T  
/* (non-Javadoc) ^q&x7Kv%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F@t3!bj9  
*/ iscz}E,Y  
public void sort(int[] data) { #Z#-Ht  
int[] stack=new int[MAX_STACK_SIZE]; sA~]$A;DM!  
mq l Z?-  
int top=-1; Ef\ -VKh  
int pivot; hP h-+Hb  
int pivotIndex,l,r; i%/+5gq  
x;S @bY  
stack[++top]=0; U:`Kss`  
stack[++top]=data.length-1; aXVFc5C\  
(:_$5&i7  
while(top>0){ hp2t"t  
int j=stack[top--]; 965 jtn  
int i=stack[top--]; VVZ'i.*_3?  
b>|6t~}M  
pivotIndex=(i+j)/2; W^Yxny  
pivot=data[pivotIndex]; D9df=lv mD  
hxx.9x>ow  
SortUtil.swap(data,pivotIndex,j); K9[UB  
"Q0@/bYq  
file://partition EnR}IY&sI  
l=i-1; PCvWS.{  
r=j; ! if   
do{ pmM9,6P4@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b}f~il  
SortUtil.swap(data,l,r); SBpL6~NW  
} \zY!qpX<  
while(l SortUtil.swap(data,l,r); O^.#d  
SortUtil.swap(data,l,j); ~&T~1xsFJ  
8}[).d160  
if((l-i)>THRESHOLD){ XX@ZQcN  
stack[++top]=i; T%Lx%Qn  
stack[++top]=l-1; .>S!ji  
} Ba,`TJ%y  
if((j-l)>THRESHOLD){ eRYK3W  
stack[++top]=l+1; \RiP  
stack[++top]=j; *|0 -~u%q  
} j.Hf/vi`z  
+0&/g&a\R  
} osRy e3  
file://new InsertSort().sort(data); 2T35{Q!=F  
insertSort(data); eavV?\uV%  
} . vV|hSc  
/** |=w@H]r  
* @param data y `UaB3q  
*/ = &]L00u.  
private void insertSort(int[] data) { ^c<Ve'-  
int temp; ]'}L 1r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )UR7i8]!0  
} QY/w  
} zdYjF|  
} ,2q-D&)\Z  
 &HW9Jn  
} O?2DQY?jT  
+nL[MSw  
归并排序: ![1rzQvGDb  
l;Wj]  
package org.rut.util.algorithm.support; +2{Lh7Ks  
vQCy\Gi   
import org.rut.util.algorithm.SortUtil; u[YGm:}  
gJXaPJA{  
/** UfGkTwoo=  
* @author treeroot \~W'v3:W  
* @since 2006-2-2 +whDU2 "  
* @version 1.0 wp_0+$?s  
*/ A&VG~r$  
public class MergeSort implements SortUtil.Sort{ M  >u_4AY  
a9gLg &  
/* (non-Javadoc) ]DcFySyv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X8|,   
*/ aOp\91  
public void sort(int[] data) { G[=c Ss,  
int[] temp=new int[data.length]; K-4PI+qQ\  
mergeSort(data,temp,0,data.length-1); t_^4`dW`  
} /x hKd]Q  
CTb%(<r  
private void mergeSort(int[] data,int[] temp,int l,int r){ L,\Iasv  
int mid=(l+r)/2; @]j1:PN-  
if(l==r) return ; { FkF  
mergeSort(data,temp,l,mid); iTwm3V P  
mergeSort(data,temp,mid+1,r); ;pAK_>  
for(int i=l;i<=r;i++){ >7|VR:U?B  
temp=data; Ac@VGT:9  
} _)8s'MjA:&  
int i1=l; jp,4h4C^)  
int i2=mid+1; K0~rN.C!0  
for(int cur=l;cur<=r;cur++){ ?4,T}@P  
if(i1==mid+1) 1?}T=)3+$  
data[cur]=temp[i2++]; A^g(k5M*  
else if(i2>r) dN q$}  
data[cur]=temp[i1++]; &~CI<\o P  
else if(temp[i1] data[cur]=temp[i1++];  ];m_4  
else h`q1  
data[cur]=temp[i2++]; s;e\ pt  
} 3`g^  
} 1Mzmg[L8  
[JiH\+XLPs  
} f|5co>Hk  
6Mf0`K  
改进后的归并排序:  ?9/G[[(  
o&%g8=n%  
package org.rut.util.algorithm.support; .*oU]N%K=  
i5Ggf"![  
import org.rut.util.algorithm.SortUtil; e ,(mR+a8  
**%37  
/** =cI(d ,  
* @author treeroot P pb\6|*  
* @since 2006-2-2 fhiM U8(&  
* @version 1.0 V gWRW7Se  
*/ Ml_^ `vn  
public class ImprovedMergeSort implements SortUtil.Sort { 79gT+~z   
N8jIMb'<  
private static final int THRESHOLD = 10; C dn J&N{  
TjH][bH5  
/* Y2AJ+ |  
* (non-Javadoc) [n@] r2g)3  
* x5Bk/e'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SUiOJ[5,  
*/ >:-$+I  
public void sort(int[] data) { 6P3*Z  
int[] temp=new int[data.length]; oJ^P(]dw  
mergeSort(data,temp,0,data.length-1); X ?O[r3<  
} K;?+8(H  
H_a[)DT  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1EK *g;H  
int i, j, k; ytImB`'\  
int mid = (l + r) / 2; 5m@V#2^P  
if (l == r) j2k"cmsKh  
return; )lkjqFQ(  
if ((mid - l) >= THRESHOLD) M`_0C38  
mergeSort(data, temp, l, mid); @ArSC  
else Jy)/%p~  
insertSort(data, l, mid - l + 1); O.? JmE  
if ((r - mid) > THRESHOLD) rI\FI0zIp_  
mergeSort(data, temp, mid + 1, r); {}9a6.V;}  
else 3";q[&F9y  
insertSort(data, mid + 1, r - mid); MgZ/(X E  
4#D,?eA7  
for (i = l; i <= mid; i++) { dtDFoETz  
temp = data; /ZX }Nc g  
} '1[Ft03  
for (j = 1; j <= r - mid; j++) { \bXa&Lq  
temp[r - j + 1] = data[j + mid]; =;L|gtH"  
} 4W75T2q#  
int a = temp[l]; \z$= K  
int b = temp[r]; j 7B!h|  
for (i = l, j = r, k = l; k <= r; k++) { )%TmAaj9d  
if (a < b) { F,kZU$  
data[k] = temp[i++]; F59 TZI  
a = temp; &=[WIG+rk  
} else { Qs!5<)6  
data[k] = temp[j--]; w0. u\  
b = temp[j]; +{]j]OP  
} WJi]t93  
} ]L jf?tk  
} %d @z39-;  
[),ige  
/** C!gZN9-  
* @param data F|8 &  
* @param l Py< }S-:  
* @param i gGYKEq{j(  
*/ +`4A$#$+y  
private void insertSort(int[] data, int start, int len) { T{ "(\X$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6]N.%Y[(  
} kZ~~/?B  
} 9r9NxKuAO  
} Z+SRXKQ  
} \U0Q<ot/7  
S:}7q2:  
堆排序: +T ?NH9  
}V>T M{  
package org.rut.util.algorithm.support; Om&Dw |xG8  
~DWl s.  
import org.rut.util.algorithm.SortUtil; MV"=19]  
#yen8SskB  
/** 4-w{BZuS  
* @author treeroot ZCw]m#lS  
* @since 2006-2-2 e20-h3h+  
* @version 1.0 $G>.\t  
*/ ]:;&1h3'7  
public class HeapSort implements SortUtil.Sort{ iU-j"&L5  
'w/hw'F6  
/* (non-Javadoc) ]9-\~Mwh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2oW"'43X  
*/ XW9!p.*.U  
public void sort(int[] data) { ,4 rPg]r@  
MaxHeap h=new MaxHeap(); }Jw,>}  
h.init(data); ]n~V!hl?A  
for(int i=0;i h.remove(); a*;b^Ze`v  
System.arraycopy(h.queue,1,data,0,data.length); ?2a$*(  
} /reX{Y  
u2I Cl  
private static class MaxHeap{ @HW*09TG  
Efe 7gE'  
void init(int[] data){ & kIFcd@  
this.queue=new int[data.length+1]; iLT}oKF2N;  
for(int i=0;i queue[++size]=data; 9mgIUjz  
fixUp(size); ^Cmyx3O^  
} $>gFf}#C  
} H]s.=.Ki  
6@o*xK7L  
private int size=0; POW>~Tof1  
QJNFA}*>  
private int[] queue; mOSv9w#,  
4Hg9N}  
public int get() { kza5ab  
return queue[1]; `/g UV  
} VQI 3G  
NI5``BwpO  
public void remove() { zi:BF60]=  
SortUtil.swap(queue,1,size--); <#.g=ay  
fixDown(1); YqG7h,F  
} 5xde;  
file://fixdown Ymgw-NJ;(  
private void fixDown(int k) { wzaV;ac4K  
int j; ,Q,^3*HX9}  
while ((j = k << 1) <= size) { Q?T]MUY(L  
if (j < size %26amp;%26amp; queue[j] j++; hph4`{T  
if (queue[k]>queue[j]) file://不用交换 h![#;>(  
break; f?b"iA(6  
SortUtil.swap(queue,j,k); P2!C|SLK  
k = j; CARzO7 b\w  
} *=n:-  
} l~.-e^p?  
private void fixUp(int k) { JRFtsio*  
while (k > 1) { +V+a4lU14  
int j = k >> 1; /=h` L ,  
if (queue[j]>queue[k]) p'fYULYE  
break; {$r[5%L\H  
SortUtil.swap(queue,j,k); 5IN(|B0  
k = j; F?cK- .  
} }Lv;!  
} 2tLJU  Z1  
eQ"E   
} hcc/=_hA  
N7_"H>O$0U  
} S$3JMFA  
:KN-F86i  
SortUtil: 7.T?#;'3  
C?Ucu]cW  
package org.rut.util.algorithm; :LTN!jj  
nm+s{  
import org.rut.util.algorithm.support.BubbleSort; -hV*EPQ/  
import org.rut.util.algorithm.support.HeapSort; ]?)TdJ`  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ah<+y\C  
import org.rut.util.algorithm.support.ImprovedQuickSort; $"&JWT!#  
import org.rut.util.algorithm.support.InsertSort; {)"vN(mX  
import org.rut.util.algorithm.support.MergeSort; xpI wrJO  
import org.rut.util.algorithm.support.QuickSort; P$sxr  
import org.rut.util.algorithm.support.SelectionSort; AEuG v}#  
import org.rut.util.algorithm.support.ShellSort; Y~Ifj,\  
IAEAhqp  
/** Ug`djIL  
* @author treeroot ^&)|sP  
* @since 2006-2-2 b2]Kx&!  
* @version 1.0 bfO=;S]b!  
*/ `kr?j:g  
public class SortUtil { a> )f=uS  
public final static int INSERT = 1; w:l"\Tm  
public final static int BUBBLE = 2; <or2  
public final static int SELECTION = 3; W l1 6`9  
public final static int SHELL = 4; - DCbko  
public final static int QUICK = 5; yBRC*0+Vy  
public final static int IMPROVED_QUICK = 6; <X5 fUU"+U  
public final static int MERGE = 7; <1 pEwI~  
public final static int IMPROVED_MERGE = 8; }i2V.tVB-  
public final static int HEAP = 9; E e]-qN*8  
B;WCTMy}  
public static void sort(int[] data) { d"NLE'R  
sort(data, IMPROVED_QUICK); �{x7,  
} L]Mo;kT<Q  
private static String[] name={ *qMY22X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v}(WaO#S  
}; s79r@])=  
{PmZ9  
private static Sort[] impl=new Sort[]{ aoTP [Bp  
new InsertSort(), f-2c0Bi  
new BubbleSort(), 1U\z5$V  
new SelectionSort(), "mN q&$  
new ShellSort(), ^t"'rD-I  
new QuickSort(), \Roz$t-R|f  
new ImprovedQuickSort(), x`?3C"N:<  
new MergeSort(), 4fzZ;2sl}  
new ImprovedMergeSort(), FC*[*  
new HeapSort() >3_Gw4S*H  
}; !by\9  ?n  
kW (Bkuc)  
public static String toString(int algorithm){ j7c3(*Pl  
return name[algorithm-1]; wPl%20t  
} pmilrZmm]  
\;-|-8Q  
public static void sort(int[] data, int algorithm) { 4X$Qu6#i  
impl[algorithm-1].sort(data); -^57oU  
} qw8Rlws%  
 bF(f*u  
public static interface Sort { 03(4 x'z  
public void sort(int[] data); \4#W xZ  
} EP+J N  
Lp7SLkwh3M  
public static void swap(int[] data, int i, int j) { m`_ONm'T&  
int temp = data; 4aY|TN/|  
data = data[j]; :@)>r9N  
data[j] = temp; XrPfotj1  
} r9lR|\Ax2U  
} A9JdU&  
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