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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。 =a^}]k}  
插入排序: LeaJ).Maw  
G_/Dz JBF  
package org.rut.util.algorithm.support; rc`}QoB)R  
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import org.rut.util.algorithm.SortUtil; 7B{LRm6;Vu  
/** xTg=oq  
* @author treeroot )J{ .z   
* @since 2006-2-2 "kd)dy95H  
* @version 1.0 h'ik19  
*/ ]+A%3 7  
public class InsertSort implements SortUtil.Sort{ <sli!rv  
+o-jMvK9  
/* (non-Javadoc) i8->3uB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,8 G6q_ud  
*/ #gsJ tT9  
public void sort(int[] data) { H5>?{(m  
int temp; Gy)2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }\0ei(%H  
} WT63ve  
} 75^AO>gt   
} v6P2v  
h?'~/@  
} +h08uo5c  
yQ0:M/r;0  
冒泡排序: $Da?)Hz'F  
* }) W>  
package org.rut.util.algorithm.support; 5Ky(C6E$s  
T:Nc^QP|tm  
import org.rut.util.algorithm.SortUtil; Kk`Lu S?  
T.}Y&,n$$5  
/** Kf1NMin7  
* @author treeroot KX J7\}  
* @since 2006-2-2 F:N8{puq5  
* @version 1.0 zf;sdQ;4  
*/ )$ M2+_c  
public class BubbleSort implements SortUtil.Sort{ Bmt^*;WY+  
2Gh&h(  
/* (non-Javadoc) G>Hg0u0!,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =;Dj[<mJ45  
*/ Ad&VOh+0  
public void sort(int[] data) { dTjDVq&Hz  
int temp; +pRNrg?k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y>6N2&Q  
if(data[j] SortUtil.swap(data,j,j-1); *:"@  
} V503  
} m!5Edo-;<  
} 1mD)G55Ep  
} %=!] 1  
[5!dO\-[  
} kH8/8  
.,20_<j%=  
选择排序: 5|5p -B  
!Au#j^5K-o  
package org.rut.util.algorithm.support; .+,U9e:%  
+Qf}&D_  
import org.rut.util.algorithm.SortUtil; 7[PEiAI  
K)U[xS;<  
/** \<ysJgqUG  
* @author treeroot | kP utB  
* @since 2006-2-2 L7hRFf-o  
* @version 1.0 T+^c=[W  
*/ .G#li(NWH  
public class SelectionSort implements SortUtil.Sort { ;tSA Q  
qV6WT&)T  
/* . P+Qu   
* (non-Javadoc) =r*Ykd;W|E  
* <z\`Ma  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nte$cTjX  
*/ :AS`1\ C  
public void sort(int[] data) { <Se9 aD  
int temp; z$WLx  
for (int i = 0; i < data.length; i++) { kRc+OsY9  
int lowIndex = i; X'-Yz7J?o  
for (int j = data.length - 1; j > i; j--) { Ulx]4;uzf  
if (data[j] < data[lowIndex]) { x x4GP2  
lowIndex = j; k%FA:ms|k  
} 1)MDnODJ  
} UKQ"sC  
SortUtil.swap(data,i,lowIndex); #=={h?UDT  
} 9 h?'zyX B  
} S>r",S  
x-e6[_F  
} 'It8h$^j  
kw@^4n+M  
Shell排序: w7o`B R  
Z Cjw)To(  
package org.rut.util.algorithm.support; 50j8+xJPV  
[ r8 ZAS  
import org.rut.util.algorithm.SortUtil; H=Ilum06  
o$buoGSPc  
/** 0'fswa)  
* @author treeroot @J"tM.  
* @since 2006-2-2 kQ}n~Hn  
* @version 1.0 {X&lgj  
*/ 18!y7 _cFT  
public class ShellSort implements SortUtil.Sort{ i*Ldec^  
4] uj+J  
/* (non-Javadoc) AoeRoqg&#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m$kQbPlatN  
*/ b.@a,:"  
public void sort(int[] data) { acR|X@ \3  
for(int i=data.length/2;i>2;i/=2){ 6FQi=}O1  
for(int j=0;j insertSort(data,j,i); {@^;Nw%J  
} C=/B\G/.9  
} m&Mupl  
insertSort(data,0,1); dy&UF,l6  
} ]MV8rC[\  
`daqzn  
/** /}(d'@8p  
* @param data UnF8#~  
* @param j Y8\P"q b  
* @param i 4 "HX1qP  
*/ t82'K@sq  
private void insertSort(int[] data, int start, int inc) { eZLEdTScM  
int temp; 3/@z4:p0R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9)ALJd,M  
} e~9O#rQI  
} W(`QbNJ  
} `t&{^ a&Y"  
#Ub_m@@ 4  
} S{rltT-  
`za,sRFR  
快速排序: t?W}=%M[  
*h!fqT%9  
package org.rut.util.algorithm.support; 0jf6 z-4  
En?V\|,  
import org.rut.util.algorithm.SortUtil; ttzNv>L,  
K^shTh8k  
/** lmvp,BzC  
* @author treeroot f'^uuO#x  
* @since 2006-2-2 LH8jT  
* @version 1.0 l@4_D;b3o"  
*/ sUZA!sv  
public class QuickSort implements SortUtil.Sort{ I6W`yh`I)  
_h~ksNm5u  
/* (non-Javadoc) =|S%Rzsk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :8A+2ra&  
*/ Ae+)RBpc  
public void sort(int[] data) { CubQ6@,  
quickSort(data,0,data.length-1); N{;!xI v  
} fFjpQ~0  
private void quickSort(int[] data,int i,int j){ \k.`xG?  
int pivotIndex=(i+j)/2; 7K1-.uQ  
file://swap p,Ff, FfH  
SortUtil.swap(data,pivotIndex,j); 9\?OV @  
C82_ )@96  
int k=partition(data,i-1,j,data[j]); ~RhUg~o  
SortUtil.swap(data,k,j); EKwQ$?I  
if((k-i)>1) quickSort(data,i,k-1); `>gG"1,]  
if((j-k)>1) quickSort(data,k+1,j); =ejj@c  
M"~jNe|  
} KP&+fDa  
/** B0fOAP1  
* @param data ]pax,| +$C  
* @param i Zd*$^P,|  
* @param j 8i#  
* @return BU O5g8m{  
*/ eU yF<j  
private int partition(int[] data, int l, int r,int pivot) { {3~VLdy  
do{ 8\n3 i"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .DCHc,DxA  
SortUtil.swap(data,l,r); lvs  XL  
} QU"WpkO  
while(l SortUtil.swap(data,l,r); `ONjEl  
return l; m&.LJ*uM\K  
} <n2@;` D  
\Pg~j\;F]  
} {VgE0 7r  
g{8RPw]  
改进后的快速排序: |Wh3a#  
Dp@XAyiA[  
package org.rut.util.algorithm.support; D BT4 W/  
z:Ml;y  
import org.rut.util.algorithm.SortUtil; =kjKK  
\iuR+I  
/** $^Fl*:6  
* @author treeroot {keZ_2  
* @since 2006-2-2 .Ro/ioq  
* @version 1.0 Q#bW"},^k  
*/ 2;}leZ@U  
public class ImprovedQuickSort implements SortUtil.Sort { I= mz^c{  
R=D]:u<P  
private static int MAX_STACK_SIZE=4096; Wh[QR-7Ew  
private static int THRESHOLD=10; NVyBEAoh  
/* (non-Javadoc) @CMI$}!{V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (`x_MTLL  
*/ DiCz%'N  
public void sort(int[] data) { VF%QM;I[Rc  
int[] stack=new int[MAX_STACK_SIZE]; A~zn;  
IpP%WW u  
int top=-1; SeX]|?D  
int pivot; %b6$N_M{H1  
int pivotIndex,l,r; =C"[o\]VV  
Kkvc Zs'4m  
stack[++top]=0; ^_7|b[Bt  
stack[++top]=data.length-1; Wn%P.`o#  
}0'=}BE  
while(top>0){ `MtzA^Xr  
int j=stack[top--]; /]0qI  
int i=stack[top--]; YEL0h0gn  
L*@`i ]jl  
pivotIndex=(i+j)/2; xL}i9ozZ  
pivot=data[pivotIndex]; "TZq")-  
Y]z :^D  
SortUtil.swap(data,pivotIndex,j); --yF%tRMP  
LGP"S5V  
file://partition L^J4wYFTO  
l=i-1; 2qMiX|Y  
r=j; hFtV\xF K  
do{ DUp`zW;B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~Y 6'sM|  
SortUtil.swap(data,l,r); x/|W;8g4  
} (q)}`1d'  
while(l SortUtil.swap(data,l,r); 8 Rx@_   
SortUtil.swap(data,l,j); 1\}vU  
ZU4=&K  
if((l-i)>THRESHOLD){ uLhGp@Dx  
stack[++top]=i; ;pnF%co9  
stack[++top]=l-1; mdi!Q1pS  
} X5 vMY  
if((j-l)>THRESHOLD){ 5ggyk0  
stack[++top]=l+1; ZmA}i`  
stack[++top]=j; ,Qj G|P  
} +! 1_Mt6  
I _nQTWcm  
} ah>c)1DA*H  
file://new InsertSort().sort(data); 0~|0D#klB  
insertSort(data); -hd  
} m#"_x{oa  
/** Z@~gN5@,M  
* @param data FP@_V-  
*/ -@v^. @[Z&  
private void insertSort(int[] data) { uGU 2  
int temp; x:SjdT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \GFq RRn  
} 5 jrR]X  
} B=SA +{o  
} JrP`u4f_  
,@*5x'auK  
} b 74 !Zw  
Nr|Gw @+  
归并排序: 0s n$QmW:  
aDS:82GMQ  
package org.rut.util.algorithm.support; \!ZA#7  
p=+Y7NE)  
import org.rut.util.algorithm.SortUtil; Bm~^d7;Cw  
&;Ncc,jb  
/** >,6  
* @author treeroot ,&[o:jTk  
* @since 2006-2-2 2&hv6Y1  
* @version 1.0 {`HbpM<=m]  
*/ LkbD='\=  
public class MergeSort implements SortUtil.Sort{ CL<-3y*  
+y| B"}x  
/* (non-Javadoc) $z=a+t *  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h#1:ypA6l  
*/ 7%h;To-<6  
public void sort(int[] data) { b9g2mWL\T  
int[] temp=new int[data.length]; \kE0h\  
mergeSort(data,temp,0,data.length-1); g[cnaS|?  
} Q%CrB>|@  
_L,~WYRo  
private void mergeSort(int[] data,int[] temp,int l,int r){ xQR/Xp!h  
int mid=(l+r)/2; f6r!3y  
if(l==r) return ; L15)+^4n  
mergeSort(data,temp,l,mid); Tzd#!Lvm:,  
mergeSort(data,temp,mid+1,r); Zma;An6  
for(int i=l;i<=r;i++){ !(*&P  
temp=data; C  eEhe  
} FM]clC;X?  
int i1=l; :6n4i$  
int i2=mid+1; [I;C 6p  
for(int cur=l;cur<=r;cur++){ _'p/8K5)=  
if(i1==mid+1) @(R=4LL  
data[cur]=temp[i2++]; A&}]:4@{  
else if(i2>r) lz^Vi!|p  
data[cur]=temp[i1++]; m mF0RNE  
else if(temp[i1] data[cur]=temp[i1++]; 7-3  
else r'noB<| e  
data[cur]=temp[i2++]; O%%Q./oh  
} 1 -Z&/3T]  
} 8P ]nO+  
bI.hG32  
} `yR/M"u6T  
!\b-Ot(  
改进后的归并排序: ~,,r\Y+  
h<L_ =)lH  
package org.rut.util.algorithm.support; {?Slo5X|  
SY95s  
import org.rut.util.algorithm.SortUtil; a3n Wt  
iKq_s5|sW  
/** v:lkvMq|=  
* @author treeroot Q 1i5"'][  
* @since 2006-2-2 M|nLD+d~8  
* @version 1.0 drpx"d[c  
*/ qFVZhBC  
public class ImprovedMergeSort implements SortUtil.Sort { @Ez>?#z  
<hzHrx'o{  
private static final int THRESHOLD = 10; H2iIBGu|L  
Zzlt^#KLx  
/* f (C:J[;Z  
* (non-Javadoc) 5]mH.{$x$?  
* =pzTB-G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B<~AUf*y  
*/ J"#6m&R_q  
public void sort(int[] data) { sudh=_+>  
int[] temp=new int[data.length]; :@p]~{m:G  
mergeSort(data,temp,0,data.length-1); q AVypP?J  
} pZ $>Hh#  
/#5rt&q  
private void mergeSort(int[] data, int[] temp, int l, int r) { 46M=R-7=  
int i, j, k; kM-8%a2i  
int mid = (l + r) / 2; iwIn3R,  
if (l == r) 5X8 i=M;  
return; C{U*{0}  
if ((mid - l) >= THRESHOLD) b+Sj\3fX  
mergeSort(data, temp, l, mid); =ZS Yg K  
else "[/W+&z[~  
insertSort(data, l, mid - l + 1); T6SYXQd>.  
if ((r - mid) > THRESHOLD) ?i_2ueVR  
mergeSort(data, temp, mid + 1, r); #++:`Z  
else =H: N!!:  
insertSort(data, mid + 1, r - mid); &R/-~w5  
;=0-B&+v  
for (i = l; i <= mid; i++) { gWro])3  
temp = data; DI/d(oFv`  
} "z6p=B"?3  
for (j = 1; j <= r - mid; j++) { {%6 '|<`[  
temp[r - j + 1] = data[j + mid]; nYC.zc*ox  
} `4ga~Ch  
int a = temp[l]; 0^L:`[W+  
int b = temp[r]; UQhD8Z'I.  
for (i = l, j = r, k = l; k <= r; k++) { &'neOf/~  
if (a < b) { p%Q{Rqc)  
data[k] = temp[i++]; 'xEomo#  
a = temp;  )%9:k9  
} else { Ur[ai6LNG  
data[k] = temp[j--]; /_JR7BB^X,  
b = temp[j]; /:-ig .YY  
} oGXcu?ft  
} C(sz/x?11  
} }<z [t5  
EGRIhnED#  
/** 3Zz_wr6  
* @param data p]e.E`'S  
* @param l 7h. [eMLPB  
* @param i /2r&ga&  
*/ W`[7|8(6!  
private void insertSort(int[] data, int start, int len) { $v8T%'p+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .|:(VG$MfI  
} D41.$t[  
} -R$Q`Xw  
} #p{8  
} gjJ:s,Fg  
dF|n)+C~R  
堆排序: 2#R0Bd  
%}  
package org.rut.util.algorithm.support; 5OTZa>H  
YYe<StyH  
import org.rut.util.algorithm.SortUtil; .F/l$4CQ  
.lgm"  
/** aTaL|&(  
* @author treeroot zYis~ +  
* @since 2006-2-2 V+u0J"/8  
* @version 1.0 H_iQR9Ak7  
*/ 98|1K>C  
public class HeapSort implements SortUtil.Sort{ m9'bDyyK  
b^~4k; <  
/* (non-Javadoc) !( _qM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T[ zEAj  
*/ C]zG@O !  
public void sort(int[] data) { .%\R L/  
MaxHeap h=new MaxHeap(); Z'wGZ(  
h.init(data); <P5 7s+JK  
for(int i=0;i h.remove(); ?;rRR48T9E  
System.arraycopy(h.queue,1,data,0,data.length); uY&t9L8  
} yTWicW7i  
|UQGZ  
private static class MaxHeap{ rB =c  
bM,%+9oz;  
void init(int[] data){ q ) e* eN  
this.queue=new int[data.length+1]; C7l4X8\w  
for(int i=0;i queue[++size]=data; ;0dl  
fixUp(size); fHF*#  
} SG)|4$"  
} 5N#Sic M  
4g+o/+6!4  
private int size=0; YQ-V^e6  
w\>@> *E>  
private int[] queue; :<6gP(  
dsZ-|C  
public int get() { x qj@T^y  
return queue[1]; `$] ZT>&  
} 69Q#UJ  
P.Qz>c^-C  
public void remove() { p+F>+OQ*  
SortUtil.swap(queue,1,size--); za5E{<0  
fixDown(1); E`q)vk   
} Zx|VOl,;  
file://fixdown 'Y5l3xQk  
private void fixDown(int k) { \2 [  
int j;  )jH|j  
while ((j = k << 1) <= size) { fp$U%uj  
if (j < size %26amp;%26amp; queue[j] j++; 5Noy~;  
if (queue[k]>queue[j]) file://不用交换 E>1%7" i<  
break; <OGXKv@  
SortUtil.swap(queue,j,k); Hy2~D:34  
k = j; $*+`;PG-  
} #PMi6q~Z  
} : UDh{GQ*  
private void fixUp(int k) { eq4Yc*|9  
while (k > 1) { `_.(qg   
int j = k >> 1; KD8,a+GL  
if (queue[j]>queue[k]) )VkH':yCM  
break; pq*4yaTT'  
SortUtil.swap(queue,j,k); QqB9I-_  
k = j; SuJ4)f;'0  
} . L]!*  
} R5r CCp  
;TCT%j`^o  
} %H7H0 %qW  
82w=t  
} Ft 2u&Rtx  
6z1>(Za7>  
SortUtil: I~>Ye<g#  
q=/ck  
package org.rut.util.algorithm; e`t-:~'  
i/q1>  
import org.rut.util.algorithm.support.BubbleSort; /~_,p,:aP  
import org.rut.util.algorithm.support.HeapSort; MOu=  
import org.rut.util.algorithm.support.ImprovedMergeSort; uVLKR PY  
import org.rut.util.algorithm.support.ImprovedQuickSort; I :o.%5)  
import org.rut.util.algorithm.support.InsertSort; {GQRJ8m  
import org.rut.util.algorithm.support.MergeSort; c~n:xblv  
import org.rut.util.algorithm.support.QuickSort; , n47.S  
import org.rut.util.algorithm.support.SelectionSort; y (=$z/  
import org.rut.util.algorithm.support.ShellSort; !WQS.&  
aF:|MTC(~  
/** W< :7z  
* @author treeroot 52z{   
* @since 2006-2-2 p7]V1w:  
* @version 1.0 eGlPi|  
*/ Hge0$6l  
public class SortUtil { hD>cxo  
public final static int INSERT = 1; bLyaJ%pa\/  
public final static int BUBBLE = 2; ,(Nr_K  
public final static int SELECTION = 3; vUgMfy&  
public final static int SHELL = 4; vC%8-;8{H  
public final static int QUICK = 5; g+/m:(7[s|  
public final static int IMPROVED_QUICK = 6; vuNq7V*}  
public final static int MERGE = 7; .a]9rQQ&_  
public final static int IMPROVED_MERGE = 8; 61&A`  
public final static int HEAP = 9; l5CFm8%  
5YnTGf&  
public static void sort(int[] data) { ^z}$ '<D9  
sort(data, IMPROVED_QUICK); \[W)[mH_  
} z3Q#Wmv2  
private static String[] name={ I?Ct@yxhF'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +|TFxaVz  
}; Kz2s{y~?  
FR? \H"'x  
private static Sort[] impl=new Sort[]{ %g{<EuK]p  
new InsertSort(), ad,pHJ`  
new BubbleSort(), !t!\b9=  
new SelectionSort(), &u~#bDh  
new ShellSort(), ?Y\hC0a60  
new QuickSort(), [X\~J &kD  
new ImprovedQuickSort(), l"1at eM3  
new MergeSort(), MtKM#@  
new ImprovedMergeSort(), /{*0 \`;  
new HeapSort() XPsRa[08WK  
}; $I:&5o i  
*_CzCl^   
public static String toString(int algorithm){ < r7s,][&  
return name[algorithm-1]; (bo-JOOdY(  
} BoHpfx1C  
F<LRo}j"9Q  
public static void sort(int[] data, int algorithm) { K *xca(6  
impl[algorithm-1].sort(data); s8iB>-dk  
} 6PdLJ#LS  
hmM2c15T5  
public static interface Sort { 9@yi UX  
public void sort(int[] data); L@>$ Aw  
} b_rHt s  
?$Jj^/luD  
public static void swap(int[] data, int i, int j) { 5!*@gn  
int temp = data; {'$+?V"&  
data = data[j]; .}ePm(  
data[j] = temp; m%)Cw)t 7  
} @z1pE@7jK  
} 9HBRWh6  
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