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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。 Wd0 [%`dq  
插入排序: 4GR!y)  
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package org.rut.util.algorithm.support; 0QvT   
, =aJVb=C  
import org.rut.util.algorithm.SortUtil; 8)kLV_+%  
/** 'S[++w?Qq  
* @author treeroot w=|GJ 0  
* @since 2006-2-2 *=fr8  
* @version 1.0 2DB7+aZ*  
*/ `+t.!tv!  
public class InsertSort implements SortUtil.Sort{ l~D N1z6`  
>6oOZbUY0  
/* (non-Javadoc) it> r+%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I+ es8  
*/ nuoPg3Nl  
public void sort(int[] data) { TRZRYm"  
int temp; f50L,4,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $!5\E>y#  
} p~.8\bI=  
} i/b'4o=8  
} or k=`};  
% aUsOB-RV  
} Fb/XC:AD  
-k(CJ5H9  
冒泡排序: );*YQmdx'  
Mc-)OtmG[  
package org.rut.util.algorithm.support; m~lpyAw  
~Ph\Sbp  
import org.rut.util.algorithm.SortUtil; #q3l!3\mW  
M7>(hVEAW'  
/** @\w,otT  
* @author treeroot W5/0`[4  
* @since 2006-2-2 bS >0DU   
* @version 1.0 ~^ ^ NHq  
*/  KluA  
public class BubbleSort implements SortUtil.Sort{ 9'x)M?{8  
!;6Jng%  
/* (non-Javadoc) \([WH!7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =SD\Q!fA  
*/ ]APvp.Tw:  
public void sort(int[] data) { qzFQEepso  
int temp; ]NhS=3*i+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g(O;{Q_  
if(data[j] SortUtil.swap(data,j,j-1); &x-TW,#Ks  
} xsjO)))f  
} AM} brO  
} 0)9"M.AIvo  
} '!Gs>T+  
#'OaKt?Z)  
} l{ex?  
Aa?I8sbc  
选择排序: wA`"\MWm  
ED$DSz)x  
package org.rut.util.algorithm.support; j<pw\k{i  
AGYm';z3  
import org.rut.util.algorithm.SortUtil; ,}xbAA#  
7%OKH<i\2<  
/** 9Q W&$n^  
* @author treeroot kC$&:\Rh  
* @since 2006-2-2 (#q<\`  
* @version 1.0 4R>zPEo  
*/ ,jy*1Hjd  
public class SelectionSort implements SortUtil.Sort { }a&mY^  
Pw@olG'Ah  
/* 5&CDHc7Oj  
* (non-Javadoc) Sx ] T/xq  
* i.iio-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'mdMq=VI  
*/ oKFT? "[X  
public void sort(int[] data) { RA a[t :|  
int temp; kqvow3u  
for (int i = 0; i < data.length; i++) { 7:h!Wj -a]  
int lowIndex = i; ,J mbqOV?!  
for (int j = data.length - 1; j > i; j--) { J NC  
if (data[j] < data[lowIndex]) { n,P5o_^:  
lowIndex = j; Swtbl`,  
} :9l51oE7  
} 1u]P4Gf=  
SortUtil.swap(data,i,lowIndex); p4VqV6LwD  
} }8'&r(cN4  
} |0bc$ZY:  
<Wl(9$  
} ,/&Zw01dGN  
d0 er^ ~  
Shell排序: %up}p/?  
__p_8P  
package org.rut.util.algorithm.support; V'Qn sI  
$e\N+~KNCy  
import org.rut.util.algorithm.SortUtil; yy2Ie  
# Oup^ o@  
/** &h$|j  
* @author treeroot }xn_6  
* @since 2006-2-2 vxN0,l  
* @version 1.0 h3u1K>R)  
*/ ]_*S~'x  
public class ShellSort implements SortUtil.Sort{ =lr)gj  
K.>wQA&  
/* (non-Javadoc) -ewQp9)G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @?B6aD|jE  
*/ Q^eJ4{Ya:  
public void sort(int[] data) { oB c@]T5>  
for(int i=data.length/2;i>2;i/=2){ e[Xq  
for(int j=0;j insertSort(data,j,i); KSs1CF'i  
} Aq#/2t  
} #y"=Cz=1u7  
insertSort(data,0,1); ,*,sw:=2  
} $*~Iu%Az  
g?/XZ5$a5  
/** US?Rr  
* @param data ~el-*=<m  
* @param j _JGs}aQ  
* @param i j kn^Z":  
*/ {^q)^<#JT  
private void insertSort(int[] data, int start, int inc) { z>vtEV))  
int temp; ~waNPjPRG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HV]Ze>}  
} O ++/ry%k  
} +p:Y=>bTj  
} eE:&qy^  
G`]w?Di4  
} 8KjRCm,I  
)3?rXsSR  
快速排序: utO.WfWP  
X} JOX9pK  
package org.rut.util.algorithm.support; KI&:9j+M)  
*FgJ|y6gk  
import org.rut.util.algorithm.SortUtil; >w'$1tc?+F  
%l9$a`&  
/** HD# r0)  
* @author treeroot y62%26 [  
* @since 2006-2-2 KS>$`ax,  
* @version 1.0 2z2`  
*/ |w)5;uQ&\  
public class QuickSort implements SortUtil.Sort{ J=WB6zi  
setL dEi  
/* (non-Javadoc) 4L:>4X[T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z%"Ai)W/{  
*/ \SYvD y]  
public void sort(int[] data) { |'hLa  
quickSort(data,0,data.length-1); "G?9b  
} SN]LeXesS  
private void quickSort(int[] data,int i,int j){ #1Z7&#R/  
int pivotIndex=(i+j)/2; -l*A  
file://swap `<vxG4=62\  
SortUtil.swap(data,pivotIndex,j); we]>(|  
;El <%{(  
int k=partition(data,i-1,j,data[j]); H7IW"UkBR  
SortUtil.swap(data,k,j); rFd@mO  
if((k-i)>1) quickSort(data,i,k-1); x*8O*!ZZ  
if((j-k)>1) quickSort(data,k+1,j); f~\Xg7<  
6M><(1fT  
} xks?y.wA  
/** zNtq"T[  
* @param data VuWib+fT  
* @param i }C~]=Z  
* @param j f$D@*33ft  
* @return e@ oWwhpE  
*/ *6*-WV6  
private int partition(int[] data, int l, int r,int pivot) { QUP|FIpZ  
do{ _PB@kH#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h`?k.{})M  
SortUtil.swap(data,l,r); !$kR ;Q"/  
} M<oA<#IW  
while(l SortUtil.swap(data,l,r); xdF guV8  
return l; , {<Fz%  
} O~'FR[J  
{\We72!  
} _X%Dw  
3V-6)V{KaE  
改进后的快速排序: cf*zejbw  
sJ6a7A8)  
package org.rut.util.algorithm.support; {e9Y !oFg  
?y_awoBd1  
import org.rut.util.algorithm.SortUtil; 6"%qv`.Fp  
w~-X>~}  
/** ( pD7  
* @author treeroot vgk9b!Xd  
* @since 2006-2-2 Vipp /WV  
* @version 1.0 ~%P3Pp  
*/ e[4V%h  
public class ImprovedQuickSort implements SortUtil.Sort { j.& ;c'V$.  
>h7$v~nra  
private static int MAX_STACK_SIZE=4096; #O|lfl>}  
private static int THRESHOLD=10; 8ui=2k(  
/* (non-Javadoc) TG]}X\c+V|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nEVbfNo0  
*/ JD&U}dJ  
public void sort(int[] data) { lPS*-p#IZ  
int[] stack=new int[MAX_STACK_SIZE]; &7][@v  
/co%:}ln  
int top=-1; j`9Nwa  
int pivot; BTs0o&}e  
int pivotIndex,l,r; K -E`y  
DB8s  
stack[++top]=0; ADBpX>  
stack[++top]=data.length-1; 41 'EA \V  
eBvW#Hzp  
while(top>0){ kH2oK:lN  
int j=stack[top--]; }xJR.]).KW  
int i=stack[top--]; C1ZyB"{  
xMsGs  
pivotIndex=(i+j)/2; )Pa*+ew7  
pivot=data[pivotIndex]; ]wf |PU~nr  
u:5IjOb2^  
SortUtil.swap(data,pivotIndex,j); A\g%  
)[ b#g(Y(  
file://partition wT% "5:  
l=i-1; A;t zRe  
r=j; uQ1jwYK`7  
do{ -$L(y@%X^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uN(b.5y  
SortUtil.swap(data,l,r); L]>4Nd  
} d#7]hF  
while(l SortUtil.swap(data,l,r); #S *pD?VZ  
SortUtil.swap(data,l,j); d5' )6  
`vX4! @Tw  
if((l-i)>THRESHOLD){ z"qv  
stack[++top]=i; >]?Jrs  
stack[++top]=l-1; U#"WrWj  
} :p$EiR  
if((j-l)>THRESHOLD){ z5ZKks   
stack[++top]=l+1; ] umZJZ#Y  
stack[++top]=j; jMqx   
} F,.Q|.nN  
,4yG(O$)  
} w>vmF cp  
file://new InsertSort().sort(data); Zly-\ z_  
insertSort(data); 3FY_A(+  
} qAORWc  
/** ,5kvn   
* @param data 9b%|^ .B  
*/ [yvt1:q  
private void insertSort(int[] data) { Vku#;:yUb^  
int temp; p_gA/. v=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PS/W h  
} Kt6C43]7  
} #~*XDWvIS~  
} 6d};|#}  
8.-S$^hj~6  
} nHVPMi>  
j`hNZ%a  
归并排序: ? KF=W  
;x16shH  
package org.rut.util.algorithm.support; ^f6 {0  
F'ENq6  
import org.rut.util.algorithm.SortUtil; }M?|,N6  
{YBl:rMz  
/** ~R$[n.Vpk  
* @author treeroot XK3!V|y`  
* @since 2006-2-2 >*{:l,LH  
* @version 1.0 |yU3Kt  
*/ sU0Stg8&b  
public class MergeSort implements SortUtil.Sort{ hw|t8 ShW  
k_BSY=$e*D  
/* (non-Javadoc) 3Mxz_~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g@}6N.]#  
*/ p&QmIX]BZ  
public void sort(int[] data) { W1;=J^<&1  
int[] temp=new int[data.length]; C|9[Al  
mergeSort(data,temp,0,data.length-1); niQ+EAD  
} i<bxc  
B#Qpd7E+*  
private void mergeSort(int[] data,int[] temp,int l,int r){ r:.6"VQu}  
int mid=(l+r)/2; |;~nI'0O])  
if(l==r) return ; p!QR3k.9s  
mergeSort(data,temp,l,mid); 5'62ulwMP=  
mergeSort(data,temp,mid+1,r); NQg'|Pt(%  
for(int i=l;i<=r;i++){ Vv2{^ !aZ  
temp=data; Fdr*xHx$P  
} .@Hmg  
int i1=l; a" ^#!G<+  
int i2=mid+1; i<J^:7  
for(int cur=l;cur<=r;cur++){ $\0TD7p  
if(i1==mid+1) L%k67>  
data[cur]=temp[i2++]; VZt;P%1;h  
else if(i2>r) :wSJ-\'$  
data[cur]=temp[i1++]; x<Iy<v7-  
else if(temp[i1] data[cur]=temp[i1++]; uvR0TIF4  
else gj[z ka0_  
data[cur]=temp[i2++]; F:M/z#:~  
} n$IWoIdbGN  
} - *r[  
nrI"k2oA@  
} +< GrRYbC  
}+*w.X}L  
改进后的归并排序: ]&' jP  
ZMP?'0h=  
package org.rut.util.algorithm.support; mn(/E/  
FLK"|*A  
import org.rut.util.algorithm.SortUtil; vNPfUEnA  
4+-5,t7  
/** vwm|I7/w  
* @author treeroot y9=t;qH@|  
* @since 2006-2-2 .zQ4/  
* @version 1.0 ; A x=]Q  
*/ =jsx (3V   
public class ImprovedMergeSort implements SortUtil.Sort { ZUv ZN f  
=.VepX|?D  
private static final int THRESHOLD = 10; Th.3j's  
(_s;aK  
/* o*?[_{x W  
* (non-Javadoc) }Q,(u   
* P_kaIPP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -hQ96S8  
*/ =_K%$y*  
public void sort(int[] data) { IES41y<  
int[] temp=new int[data.length]; 0W;q!H[G  
mergeSort(data,temp,0,data.length-1); *iPs4Es-  
} j~X j  
OY+!aG@.  
private void mergeSort(int[] data, int[] temp, int l, int r) { !}z%#$  
int i, j, k; Z`^ K%P=  
int mid = (l + r) / 2; & 8ccrw  
if (l == r) Xs{/}wc.q;  
return; f:n]Exsy  
if ((mid - l) >= THRESHOLD) qK<aZ%V  
mergeSort(data, temp, l, mid); O\LjtMF  
else mipi]*ZfXE  
insertSort(data, l, mid - l + 1); @QvfN>T  
if ((r - mid) > THRESHOLD) 32M6EEmPG  
mergeSort(data, temp, mid + 1, r); 5JO[+>  
else xWd9%,mDNR  
insertSort(data, mid + 1, r - mid); }*xC:A%aS  
C<zx'lw!  
for (i = l; i <= mid; i++) { s'R~ r  
temp = data; bMSD/L  
} ( K^YD K  
for (j = 1; j <= r - mid; j++) { Ti0 (VdY  
temp[r - j + 1] = data[j + mid]; ac2}3 $u  
} N;e;4,_ n  
int a = temp[l]; OJnPP>  
int b = temp[r]; -OHvK0~  
for (i = l, j = r, k = l; k <= r; k++) { pI'8>_o  
if (a < b) { ;5&k/CB1  
data[k] = temp[i++]; $ijx#a&O  
a = temp; /&~nM  
} else { NvXj6U*%  
data[k] = temp[j--]; |U8>:DEl  
b = temp[j]; +J\L4ri k  
} p*A^0DN'Fn  
} e}{8a9J<%_  
} ~,(0h:8  
113Z@F  
/** SIKk|I)  
* @param data \DG( 8l  
* @param l \9dz&H  
* @param i trID#DT~  
*/ % <8K^|w  
private void insertSort(int[] data, int start, int len) { ^hQ:A4@q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s4\SX,  
} X7'h@>R   
} wxdh?sQ  
} ,apd3X%g  
} tXssejiE%  
zv$=*  
堆排序: $#6 Fnhh}  
/ig^7+#  
package org.rut.util.algorithm.support; @t{{Q1  
yVbg,q'?  
import org.rut.util.algorithm.SortUtil; @ef//G+Z"  
|N phG|  
/** ;`X`c  
* @author treeroot J>,'P^  
* @since 2006-2-2 v*vub#wP  
* @version 1.0 ~$ cm9>  
*/ o+)m}'T8  
public class HeapSort implements SortUtil.Sort{ VZ9e~){xA  
)?= kb  
/* (non-Javadoc) ZwY`x')  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m? \#vw$  
*/ G#_(7X&  
public void sort(int[] data) { DzX6U[=  
MaxHeap h=new MaxHeap(); v.~Nv@+kR  
h.init(data); jgZX ~D  
for(int i=0;i h.remove(); I1eb31<  
System.arraycopy(h.queue,1,data,0,data.length); hr/xpQW  
} g4BwKENM  
B1 jH.(  
private static class MaxHeap{ +iZ@.LI  
`Z;B^Y0  
void init(int[] data){ pn ~/!y  
this.queue=new int[data.length+1]; HQ-N!pf9  
for(int i=0;i queue[++size]=data; ];YglHH  
fixUp(size); "GIg| 3  
} [4V|UvKz  
} bi4^ zaCEE  
ijR-?nrR  
private int size=0; J.CZR[XF#  
zD#+[XI]K  
private int[] queue; f4@#pnJ3po  
RP ScP  
public int get() { #/& q  
return queue[1]; AOvH&9**  
} Z.cG`Km*  
3!ajvSOI9j  
public void remove() { bOnukbJ  
SortUtil.swap(queue,1,size--); j,gM+4V^  
fixDown(1); DcFV^8O&  
} .q'FSEkMJ  
file://fixdown h:US]ZC^Z  
private void fixDown(int k) { 6 ^6uK  
int j; cSHtl<UY  
while ((j = k << 1) <= size) { B<|q{D$N/  
if (j < size %26amp;%26amp; queue[j] j++; l1`c?Y  
if (queue[k]>queue[j]) file://不用交换 A-@-?AR  
break; 6832N3=  
SortUtil.swap(queue,j,k); u:{. Hn`  
k = j; %Pt[3>  
} unbcz{&Hb[  
} Ay[9k=q]  
private void fixUp(int k) { HeAc(_=C  
while (k > 1) { `siy!R  
int j = k >> 1; $)i"[  
if (queue[j]>queue[k]) :#"OCXr  
break; U 8 .0L  
SortUtil.swap(queue,j,k); e-T9HM&%P  
k = j; * (XgUJ q+  
} c+\Gd}IJq  
} [3bwbfHhi  
~k:>Xo[|O  
} = -a?oH-  
y+~Aw"J}  
} +$pO  
O+3D 5*  
SortUtil: (t"YoWA#m  
PHB\)/  
package org.rut.util.algorithm; ) Sh;UW  
Qg8eq_m(  
import org.rut.util.algorithm.support.BubbleSort; _oyL*Cb  
import org.rut.util.algorithm.support.HeapSort; O.m.]%URW  
import org.rut.util.algorithm.support.ImprovedMergeSort; k%bTs+] *  
import org.rut.util.algorithm.support.ImprovedQuickSort; (HP={MrV  
import org.rut.util.algorithm.support.InsertSort; "p_[A  
import org.rut.util.algorithm.support.MergeSort; p_kTLNZd9  
import org.rut.util.algorithm.support.QuickSort; 9BgQ oK@  
import org.rut.util.algorithm.support.SelectionSort; rqG6Ll`=+  
import org.rut.util.algorithm.support.ShellSort; 7zOvoQ}  
U]R|ej  
/** _ jM6ej<  
* @author treeroot fSb@7L  
* @since 2006-2-2 u{y5'cJ{  
* @version 1.0 ^,\se9=(  
*/ H"Em|LX^  
public class SortUtil { 0^tJX1L  
public final static int INSERT = 1; I?xhak1)lu  
public final static int BUBBLE = 2; ^LAS9K1.  
public final static int SELECTION = 3; &opH\wa  
public final static int SHELL = 4; Yh!\:9@(  
public final static int QUICK = 5; uma9yIk  
public final static int IMPROVED_QUICK = 6; F\$}8,9  
public final static int MERGE = 7; C8%nBa /  
public final static int IMPROVED_MERGE = 8; $F==n4)  
public final static int HEAP = 9; ^c:eXoU  
~m"M#1,ln3  
public static void sort(int[] data) { Y_ u7 0@`  
sort(data, IMPROVED_QUICK); D/!G]hx  
} :O2v0Kx  
private static String[] name={ ?(XX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UW~tS  
}; JO;` Kz_$  
TTjjyZ@  
private static Sort[] impl=new Sort[]{ )}k`X<~k  
new InsertSort(), >?Y3WPB<F  
new BubbleSort(), !-Tmu  
new SelectionSort(), dIe 6:s  
new ShellSort(), cVt$#A)  
new QuickSort(), "Mu $3 w  
new ImprovedQuickSort(), .cn w?EI  
new MergeSort(), E"vi+'(v  
new ImprovedMergeSort(), ]{l O  
new HeapSort() ;Q%19f3,6  
}; ckkM)|kK  
p RfHbPV?  
public static String toString(int algorithm){ =dJEcC_J  
return name[algorithm-1]; Mdq'> <ajL  
} N_~Wu  
v,O&UrZ  
public static void sort(int[] data, int algorithm) { vmQ DcCw  
impl[algorithm-1].sort(data); Ymh2qGcj]8  
} UHm+5%ZC  
L&F\"q9q71  
public static interface Sort { wz2)seZY  
public void sort(int[] data); Lzb [%?  
} DL/*t.)"et  
W!Os ci  
public static void swap(int[] data, int i, int j) { kO O~%|1CP  
int temp = data; O#ajoE  
data = data[j]; 0DjBqh$  
data[j] = temp; ( ]uoN4  
} ;{#M  
} /t2 <OU9  
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