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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。 nUAoPE  
插入排序: \DP*?D_}?  
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package org.rut.util.algorithm.support; Ca: jN0  
T gpf0(  
import org.rut.util.algorithm.SortUtil; j,q8n`@  
/** V3<baxdE  
* @author treeroot y*Egt`W  
* @since 2006-2-2 #6XN_<  
* @version 1.0 B{\cV-X$0  
*/ ]K]$FX<f  
public class InsertSort implements SortUtil.Sort{ 2v ^bd^]u:  
EhEUkZE3 )  
/* (non-Javadoc) ?\GILB,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hJqLH ?Ri  
*/ hXsd12  
public void sort(int[] data) { /~w!7n<7  
int temp; fS08q9,S/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0?)U?=>]p  
}  xc%\%8C}  
} I3;{II  
} EXlmIY4  
vvJ{fi  
} w"s;R8  
mv7><C  
冒泡排序: OnNWci|7  
#~A(%a  
package org.rut.util.algorithm.support; KeU|E<|!  
,o $F~KPu  
import org.rut.util.algorithm.SortUtil; e rz9CX  
"<c^`#CWuO  
/** W6. )7Y,  
* @author treeroot "}_b,5lkGK  
* @since 2006-2-2 'z=WJV;Vs  
* @version 1.0 T3HAr9i%)  
*/ )E--E+j  
public class BubbleSort implements SortUtil.Sort{ R,mOV8y"W[  
Fai_v{&?  
/* (non-Javadoc) 72hN%l   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d|GQZAEJEt  
*/ p.{M sn  
public void sort(int[] data) { V3%"z  
int temp; 3 ;M7^DM  
for(int i=0;i for(int j=data.length-1;j>i;j--){ gyqM&5b  
if(data[j] SortUtil.swap(data,j,j-1); rToZN!q\S  
} k A`Z#yu  
} /.Yf&2X\  
} V$y6=Q <c  
} z/IA @  
v-zi ,]W  
} -f&16pc1t  
s@USJ4#  
选择排序: l)V!0eW  
bSOxM /N  
package org.rut.util.algorithm.support; gbb2!q6p  
k[TVu5R  
import org.rut.util.algorithm.SortUtil; mAycfa  
j]-0m4QF  
/** cE{hy 7cH  
* @author treeroot XILB>o.^3  
* @since 2006-2-2 Gm,vLs9H$T  
* @version 1.0 |Ai/q6u  
*/ Y7W xV>E  
public class SelectionSort implements SortUtil.Sort { F32N e6Y6"  
N_dHPa  
/* $uw[X  
* (non-Javadoc) "gm[q."n<  
* Q5[x2 s_d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Tc jJ2T  
*/ M^q< qS>d  
public void sort(int[] data) { OT1  
int temp; @ |bN[XL  
for (int i = 0; i < data.length; i++) { l@;UwnI  
int lowIndex = i; #[|~m;K(w  
for (int j = data.length - 1; j > i; j--) { L-&N*   
if (data[j] < data[lowIndex]) { )-98pp7~BB  
lowIndex = j; =mVWfFL  
} 7_OC&hhL  
} w_c)iJ  
SortUtil.swap(data,i,lowIndex); y^PQgzm]  
} ,g69?w  
} B3x4sK s  
t=,ZR}M1`  
} baLO~C  
[NG~FwpRf  
Shell排序: ~q5aMy d<  
n$2Ia E;v  
package org.rut.util.algorithm.support; u/wWP4'$J@  
gN,O)@N'd3  
import org.rut.util.algorithm.SortUtil; &cZQ,o  
#?x!:i$-  
/** Ck:RlF[6C  
* @author treeroot 2TFb!?/RQ  
* @since 2006-2-2 r] h>Bb  
* @version 1.0 g=Gd|  
*/ l ga%U~  
public class ShellSort implements SortUtil.Sort{ 0ge"ISK  
`,lm:x+(0  
/* (non-Javadoc) YmrrZ&]q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KCBA`N8  
*/ L/ L#[  
public void sort(int[] data) { l#%qF Db  
for(int i=data.length/2;i>2;i/=2){ \9HpbCHr  
for(int j=0;j insertSort(data,j,i); a0wSXd  
} (p19"p  
} oo+i3af&7  
insertSort(data,0,1); X8}m %  
} _Y{8FN(4  
mu#I F'|b  
/** |`T$Iq  
* @param data 1c5+X Cr  
* @param j JfOBZQ  
* @param i +9^V9]{Vo  
*/ Vy.gr4Cm  
private void insertSort(int[] data, int start, int inc) { -yP|CZM  
int temp; ~Q+E""  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HbOLf  
} m|') A  
} O/XG}G.x|  
} d4ga6N3'  
:d AC:h  
} }3825  
|wxAdPe  
快速排序: DpRGPs  
V 4#bW  
package org.rut.util.algorithm.support; G '1K6  
N8[ &1  
import org.rut.util.algorithm.SortUtil; -dto46X  
*VUD!`F  
/** H=/;  
* @author treeroot J-UqH3({Z,  
* @since 2006-2-2 mNII-X G  
* @version 1.0 {yzo#"4Oy  
*/ |o@xWs@m  
public class QuickSort implements SortUtil.Sort{ Y>J$OA:  
q1a*6*YB  
/* (non-Javadoc) {4F=].!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QZh#&Qf;  
*/ +g9C klJ  
public void sort(int[] data) { Exb?eHO  
quickSort(data,0,data.length-1); ym_w09   
} La2f]+sV  
private void quickSort(int[] data,int i,int j){ )%+7"7.  
int pivotIndex=(i+j)/2; /f*QxNZ,p  
file://swap }'KHF0   
SortUtil.swap(data,pivotIndex,j); vE~>9  
#+"1">l  
int k=partition(data,i-1,j,data[j]); |F}6Zv  
SortUtil.swap(data,k,j); o?{-K-'B$  
if((k-i)>1) quickSort(data,i,k-1); .5^7Jwh  
if((j-k)>1) quickSort(data,k+1,j); i5*BZv>e  
]/#3 P  
} yI{4h $c  
/** XLgp.w;  
* @param data N,3 )`Vm  
* @param i (v,g=BS,  
* @param j ;hgRMkmz4<  
* @return 9cIKi#Bl  
*/ p!o?2Lbiw  
private int partition(int[] data, int l, int r,int pivot) { ip+?k<]z  
do{ L eu93f2  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &cpqn2Z  
SortUtil.swap(data,l,r); L^FQ|?*  
} z%q)}$O  
while(l SortUtil.swap(data,l,r); a5k![sw\  
return l; p 2>\  
} l!*!)qCB(S  
: GdLr  
} 9Ro7xSeD  
8C=8Wjm  
改进后的快速排序: gq7l>vT.  
HhZ>/5'(  
package org.rut.util.algorithm.support; g=na3^PL6  
==Ah& ){4^  
import org.rut.util.algorithm.SortUtil; t" $#KP<  
;%Zu[G`C  
/** Z#t}yC%^d  
* @author treeroot o.g)[$M8cF  
* @since 2006-2-2 @hF$qevX  
* @version 1.0 6n?0MMtR  
*/ ]<BT+6L  
public class ImprovedQuickSort implements SortUtil.Sort { 8x`E UJ  
$xqX[ocor  
private static int MAX_STACK_SIZE=4096; Aa`R40yl  
private static int THRESHOLD=10; g QYs,  
/* (non-Javadoc) / tG[pg{[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +C36OcmT~  
*/ ROr|n]aJj  
public void sort(int[] data) { nIqNhJ+  
int[] stack=new int[MAX_STACK_SIZE]; ts/Ha*h  
 6hO]eS  
int top=-1; S }3?  
int pivot; ce<88dL  
int pivotIndex,l,r; s$Vz1B  
TtWWq5X|  
stack[++top]=0; >sGiDK @  
stack[++top]=data.length-1; fyF8RTm{  
xyrlR;Sk  
while(top>0){ SUb:0GUa  
int j=stack[top--]; MMy\u) 4  
int i=stack[top--]; -KL5sK  
IMSLHwZ  
pivotIndex=(i+j)/2; T0X+\&W  
pivot=data[pivotIndex]; 0TqIRUz "C  
FL[,?RU?2  
SortUtil.swap(data,pivotIndex,j); Q%QIr  
c=f;3N  
file://partition v=~+o[  
l=i-1; `PtfPt<{  
r=j; Kut@z>SK  
do{ v[4-?7-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G.~Ffk  
SortUtil.swap(data,l,r); SQ057V>'=  
} ,R}9n@JI^Y  
while(l SortUtil.swap(data,l,r); ncpNesB  
SortUtil.swap(data,l,j); QT4&Ix,4T1  
sdBB(  
if((l-i)>THRESHOLD){ x3l~kZ(  
stack[++top]=i; qm6X5T  
stack[++top]=l-1; ";Q}Gs}  
} 4vi [hiV   
if((j-l)>THRESHOLD){ !}hG|Y6s  
stack[++top]=l+1; ' 7H"ezt  
stack[++top]=j; /pWKV>tjj  
} +' SG$<Xv  
&<EixDi4q  
} 6f^IAa|  
file://new InsertSort().sort(data); M%bD7naBq  
insertSort(data); {ceY:49  
} mq+x=  
/** "..I$R  
* @param data TR9dpt+T  
*/ {Fvl7Sh  
private void insertSort(int[] data) { !>:]k?$b  
int temp; <C_FRpR<f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q4SEvP}fLx  
} LaYd7Oyf]  
} p^s:s-"f\  
} ZKJhmk  
l\37/Z  
} MxqIB(5k  
,rX|_4 n*  
归并排序: ;+*/YTkC+P  
<q`|,mc  
package org.rut.util.algorithm.support; GsoD^mjY  
K}vYE7n:  
import org.rut.util.algorithm.SortUtil; 4t 0p!IxG  
`(xzCRX  
/** ]VaMulb4  
* @author treeroot )T@?.J`  
* @since 2006-2-2 qb$M.-\ne  
* @version 1.0 $U"pdf  
*/ GC[Ot~*_  
public class MergeSort implements SortUtil.Sort{ &hJQHlyJM0  
fW$1f5g"  
/* (non-Javadoc) K.Y.K$NjP{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]4B&8n!  
*/ p2hPLq  
public void sort(int[] data) { ^@)*voP#G  
int[] temp=new int[data.length]; v}.~m)  
mergeSort(data,temp,0,data.length-1); Lb~' I=9D  
} /H$:Q|T}  
A&V'WahC@I  
private void mergeSort(int[] data,int[] temp,int l,int r){ P}w0=  
int mid=(l+r)/2; |<JBoE]3B  
if(l==r) return ; XHm6K1mGZ  
mergeSort(data,temp,l,mid); De\Ocxx  
mergeSort(data,temp,mid+1,r); kBtzJ#j B  
for(int i=l;i<=r;i++){  63VgQ  
temp=data; IeAi'  
} p: u@? k  
int i1=l; l4 YTR4D  
int i2=mid+1; }" STc&1  
for(int cur=l;cur<=r;cur++){ a&Me#H{  
if(i1==mid+1) }[y_Fr0  
data[cur]=temp[i2++]; 6('CB|ga  
else if(i2>r) T2TWb  
data[cur]=temp[i1++]; *9US>mVy  
else if(temp[i1] data[cur]=temp[i1++]; |=[. _VH1  
else kR <\iT0j  
data[cur]=temp[i2++]; 5Vr#>W  
} =3=8oFx8  
} <CWOx&hr  
tlgg~MViS  
} @2sr/gX^  
71Y3.1+  
改进后的归并排序: Pu(kCH{  
U:gvK 8n  
package org.rut.util.algorithm.support; ^@<Ia-x  
VDlP,Mm*  
import org.rut.util.algorithm.SortUtil; F1/BtGvQE  
QC(ce)Y  
/** eC_i]q&o|  
* @author treeroot oGL2uQXX  
* @since 2006-2-2 ZQyXzERp  
* @version 1.0 dB8 e  
*/ @&GY5<&b  
public class ImprovedMergeSort implements SortUtil.Sort { 91UC>]}H  
$\L=RU!c}  
private static final int THRESHOLD = 10; j07b!j:"\}  
Ue=1NnRDkA  
/* ->W rBO  
* (non-Javadoc) L$?YbQo7  
* 0y%s\,PsT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S~B{G T\M  
*/ b@B\2BT  
public void sort(int[] data) { |AS9^w  
int[] temp=new int[data.length]; OpmPw4?}  
mergeSort(data,temp,0,data.length-1); OG^#e+  
} 1 0tt':  
^2nH6,LPS  
private void mergeSort(int[] data, int[] temp, int l, int r) { %-an\.a.  
int i, j, k; juMHc$d17  
int mid = (l + r) / 2; "5"{~3Gw^  
if (l == r) %F(lq*8X  
return; ?>mpUH  
if ((mid - l) >= THRESHOLD) 4+Y9":<  
mergeSort(data, temp, l, mid);  dK]#..  
else o[g]Va*8  
insertSort(data, l, mid - l + 1); ue -a/a  
if ((r - mid) > THRESHOLD) ,#hNHFa'JH  
mergeSort(data, temp, mid + 1, r); )!5"\eys  
else HG3iK  
insertSort(data, mid + 1, r - mid); #66u<FaG  
nMOXy\&mI  
for (i = l; i <= mid; i++) { !3\( d{  
temp = data; G#3$sz  
} q)N^  
for (j = 1; j <= r - mid; j++) { vAtR\ Vh  
temp[r - j + 1] = data[j + mid]; :JK+V2B$H  
} Q@rlqWgU ~  
int a = temp[l]; eY_BECJ+OO  
int b = temp[r]; >[g.8'hI  
for (i = l, j = r, k = l; k <= r; k++) { ,<;.'r  
if (a < b) { Ll`nO;h  
data[k] = temp[i++]; \F<C$cys\  
a = temp; T!|-dYYI  
} else { P%ZU+ET  
data[k] = temp[j--]; =_[Ich,}  
b = temp[j]; `&J=3x  
} r|3<UR%  
} 3u'@anre  
} F 7X ] h  
BLb'7`t  
/** Ju_(,M-Vgr  
* @param data ?$=Ml$  
* @param l UZo[]$"Q`  
* @param i 8< z   
*/ \j0016;  
private void insertSort(int[] data, int start, int len) { nr%P11U\c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *a` _,Q{x  
} FB O_B  
} wdRk+  
} pZ 7KWk4  
} |^O3~!JP(>  
e*39/B0S  
堆排序: XXb,*u 3  
LGWQBEXw  
package org.rut.util.algorithm.support; T/q*k)IoR  
&_3o1<  
import org.rut.util.algorithm.SortUtil; <H|]^An!H  
Ca3 {e1  
/** JiGS[tR  
* @author treeroot *s!T$oc  
* @since 2006-2-2 Kp[5"N8  
* @version 1.0 DK<}q1xi  
*/ rR(\fX!dg  
public class HeapSort implements SortUtil.Sort{ ! ;R}=  
G.qjw]Llf  
/* (non-Javadoc) {%z5^o1)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7/bF0 4~%  
*/ la{o<||Aq  
public void sort(int[] data) { lht :%Ts$  
MaxHeap h=new MaxHeap(); Gk)6ljL  
h.init(data); g?>   
for(int i=0;i h.remove(); C{YTHN n  
System.arraycopy(h.queue,1,data,0,data.length); KXcE@q9  
} !{XVaQ?x  
cB2~W%H  
private static class MaxHeap{ F#|mN0op  
Pa/2])w  
void init(int[] data){ Zrq\:KxX  
this.queue=new int[data.length+1]; 6W)#F O`  
for(int i=0;i queue[++size]=data; Suk;##I  
fixUp(size); |q 0iX2W  
} dEfP272M  
} xgWVxX^)  
D}?JX5.  
private int size=0; '^BTa6W}m  
_j]vR  
private int[] queue; _+qtH< F/  
V/J-zH&  
public int get() { A~8-{F 31  
return queue[1];  R'aA\k-  
} 8-)@q|  
}QJ6"s  
public void remove() { CMYkxU  
SortUtil.swap(queue,1,size--); `W%R  
fixDown(1); B{NGrC`5)  
} 1Pd2%  
file://fixdown l6 T5]$  
private void fixDown(int k) { ?8$h%Ov-  
int j; @eRv`O"  
while ((j = k << 1) <= size) { P,7beHjf  
if (j < size %26amp;%26amp; queue[j] j++; $WbfRyXi7'  
if (queue[k]>queue[j]) file://不用交换 %Pk@`t(3  
break; }M${ _D  
SortUtil.swap(queue,j,k); NJ(H$tB@  
k = j; YF13&E2`\  
} CjU?3Ag  
} gm}zF%B"  
private void fixUp(int k) { 6"V86b0)h}  
while (k > 1) { z_87 ;y;=  
int j = k >> 1; 'e7;^s  
if (queue[j]>queue[k]) 0lpUn74F  
break; {Lvta4}7(  
SortUtil.swap(queue,j,k); D__*?frWpW  
k = j; f6%7:B d  
} )IGx3+I ,  
} S{JBV@@tC  
-nk0Q_7N  
} Og"\@n  
:JzJ(q/  
} ''B}^yKEW  
kDWvjT  
SortUtil: n<MreKixE  
,/..f!bp  
package org.rut.util.algorithm; sT>l ?L  
%>,Kd6bdg  
import org.rut.util.algorithm.support.BubbleSort; rq^VOK|L  
import org.rut.util.algorithm.support.HeapSort; Z|zT%8.8N  
import org.rut.util.algorithm.support.ImprovedMergeSort; HeM-  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'dcO-A:>  
import org.rut.util.algorithm.support.InsertSort; 01o,9_|FL  
import org.rut.util.algorithm.support.MergeSort; VRz9;=m  
import org.rut.util.algorithm.support.QuickSort; 3NgyF[c  
import org.rut.util.algorithm.support.SelectionSort; 3!u:*ibt  
import org.rut.util.algorithm.support.ShellSort; +JY]J89  
xBAASy  
/** t+n+_X  
* @author treeroot f_ UwIP  
* @since 2006-2-2 I=}R Z9  
* @version 1.0 H)i%\7F5  
*/ PYW>  
public class SortUtil { CR`}{?2H  
public final static int INSERT = 1; $(;0;!t.  
public final static int BUBBLE = 2; ,%,.c^-  
public final static int SELECTION = 3; 9C\@10D  
public final static int SHELL = 4; i,y7R?-K  
public final static int QUICK = 5; KgEfhO$W  
public final static int IMPROVED_QUICK = 6; 4 UnN~  
public final static int MERGE = 7;  ehQ~+x  
public final static int IMPROVED_MERGE = 8; mjbV^^>  
public final static int HEAP = 9; Y>PC>  
IJofbuzw:  
public static void sort(int[] data) { Nrk/_0^  
sort(data, IMPROVED_QUICK); Eb9{  
} K?acRi  
private static String[] name={ S$ 91L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z;J{&OJ3qM  
}; (c9!:  
,98`tB0  
private static Sort[] impl=new Sort[]{ vaj-|&  
new InsertSort(), nh%Q";  
new BubbleSort(), t}-rN5GO  
new SelectionSort(), R?+:Js/  
new ShellSort(), G:{\-R'  
new QuickSort(), r#/Bz5Jb*  
new ImprovedQuickSort(), C07U.nzh  
new MergeSort(), ;.b^A  
new ImprovedMergeSort(), (Kaunp5_`  
new HeapSort() Be2yS]U  
}; BI 0 A0  
Qb&gKQtt@  
public static String toString(int algorithm){ VHTr;(]hk  
return name[algorithm-1]; +v"%@lC};  
} gqan]b_  
wM&WR2  
public static void sort(int[] data, int algorithm) { 2^=.jML[  
impl[algorithm-1].sort(data); nAW`G'V#  
} pN7 v7rs  
1U~yu&  
public static interface Sort { ~QE-$;  
public void sort(int[] data); :*s+X$x,<  
} kK$*,]iCp  
_ hs\"W  
public static void swap(int[] data, int i, int j) { D``>1IA]  
int temp = data; O,?aVgY  
data = data[j]; j-wz7B  
data[j] = temp; JM Ikr9/$  
} S*?x|&a  
} RaLc}F)9   
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