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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。 o<;"+@v  
插入排序: n/-I7Q!;u  
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package org.rut.util.algorithm.support; bk 2vce&  
2epL!j)Wh  
import org.rut.util.algorithm.SortUtil; uu:BN0  
/** =:lacK(0  
* @author treeroot <cS1}"  
* @since 2006-2-2 o z QL2  
* @version 1.0 )DW;Gc  
*/ S!uyplYKF  
public class InsertSort implements SortUtil.Sort{ ]`x~v4JU  
QH eUpJ/^  
/* (non-Javadoc) eL*Edl|#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qohUxtnTK>  
*/ '-et:Lv7  
public void sort(int[] data) { {chl+au*l  
int temp; 4^ A\w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #F kdcY  
} EJZ2V>\_-0  
} zc_3\N  
} <?!#QA  
Lgy}Gm8u5  
} LY7'wONx  
hhpH)Bi=  
冒泡排序: 2KU [Yd  
p ^Ruf?>  
package org.rut.util.algorithm.support; 4IVCTz[  
@jfd.? RK!  
import org.rut.util.algorithm.SortUtil;   ~*RNJ  
9 ItsK  
/** D`+'#%%x  
* @author treeroot -LF^u;s8&S  
* @since 2006-2-2 Ma$b(4dB  
* @version 1.0 d)LifsD)  
*/ Y|Z*|c.4OK  
public class BubbleSort implements SortUtil.Sort{ V\A?1   
Gg_i:4F  
/* (non-Javadoc) { Uh/ ~zu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VE!h!`<k  
*/ 9G&l{7=  
public void sort(int[] data) { ,+f'%)s_x  
int temp; =6ojkTk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .Sm7na K  
if(data[j] SortUtil.swap(data,j,j-1); SJL?(S*  
} X\_ku?]v  
} ZT!DTb B  
} \ ^_3Yw  
} P9gIKOOx#4  
i-$]Tg  
} 7JjTm^bu  
V5m4dQ>t  
选择排序: 4Xlq Ym  
~ujY+ {  
package org.rut.util.algorithm.support; v]BN.SHE_  
@hp@*$#& 9  
import org.rut.util.algorithm.SortUtil; >%t"VpvR  
]wZG4A  
/** x)s`j(pYC  
* @author treeroot A^xD Axk  
* @since 2006-2-2 ? 3Td>x  
* @version 1.0 =98@MX%P  
*/ @#;2P'KL  
public class SelectionSort implements SortUtil.Sort { 40+~;20  
><+wHb  
/* y]+q mNw"+  
* (non-Javadoc) 4vF1  
* R]H/Jv\'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v="i0lL_  
*/ dL!PpLR$2  
public void sort(int[] data) { qq G24**9v  
int temp; D}OvD |<-  
for (int i = 0; i < data.length; i++) { X)P9f N~7  
int lowIndex = i; 0@k)C z[0;  
for (int j = data.length - 1; j > i; j--) { &c%;Lo  
if (data[j] < data[lowIndex]) { >La!O~d  
lowIndex = j; #!qa#.Yi  
} F[5[@y  
} +/E`u|%|\]  
SortUtil.swap(data,i,lowIndex); A&XI1. j6  
} S}WQ~e  
} as6a)t.^  
7,X5]U&A<x  
} k  <SFl  
zT4SI'r?f  
Shell排序: /x\{cHAt8J  
z$C}V/Ey  
package org.rut.util.algorithm.support; [M?'N w/[S  
oK\{#<gCZ  
import org.rut.util.algorithm.SortUtil; ROb2g|YXG  
_[M*o0[@W  
/** f-$%Ck$%,  
* @author treeroot I54`}Npp  
* @since 2006-2-2 xO3-I@  
* @version 1.0 ?o$ hlX  
*/ ,%Sf,h?"^  
public class ShellSort implements SortUtil.Sort{ _=$:<wIE[  
Ts)ox}rYVm  
/* (non-Javadoc) L{&5Ets  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )/Z% HBn  
*/ [ H|ifi  
public void sort(int[] data) { qGivRDR$  
for(int i=data.length/2;i>2;i/=2){ |&wwH&<[z  
for(int j=0;j insertSort(data,j,i); P~xP@? I%  
} 3Q;XvrGA  
} NW?.Ge.!P  
insertSort(data,0,1); 3pU/Z bb,:  
} d x52[W  
3IB||oN$T  
/** s[2>r#M  
* @param data K-X@3&X}  
* @param j }LYK:?_/  
* @param i )+L.$h  
*/ RZ +SOZs7H  
private void insertSort(int[] data, int start, int inc) { MeCHn2zwB  
int temp; (?y (0%q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jq_E{Dq1  
} &[#iM0;)W0  
} @T 5dPmn  
} n=_jmR1  
OUM^ u*  
} caH!(V}6  
{)K H%  
快速排序: <4Ev3z*;Z  
glL.CkJ  
package org.rut.util.algorithm.support; JnodDH ?  
M dKkj[#  
import org.rut.util.algorithm.SortUtil; !TwH;#U w  
.=`r?#0  
/** Z)qts=  
* @author treeroot a]]>(Txc  
* @since 2006-2-2 oZS.pi  
* @version 1.0 + $Yld{i  
*/ D #Ku5~j  
public class QuickSort implements SortUtil.Sort{ 'O:QS)  
Q |1-j  
/* (non-Javadoc) yH<a;@C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n,l{1 q  
*/ hO?RsYJ.F  
public void sort(int[] data) { /$-Tg)o5i  
quickSort(data,0,data.length-1); RX\l4H5;  
} X}5}M+'~  
private void quickSort(int[] data,int i,int j){ Y;I>rC (  
int pivotIndex=(i+j)/2; 5,~Ju>y*  
file://swap UB9n7L(@c  
SortUtil.swap(data,pivotIndex,j); 7SVq fWp  
WAzn`xGxR"  
int k=partition(data,i-1,j,data[j]); 5JvrQGvL  
SortUtil.swap(data,k,j); v<u`wnt  
if((k-i)>1) quickSort(data,i,k-1); iVdY\+N!<  
if((j-k)>1) quickSort(data,k+1,j); vj#Y /B  
K3I|d;Y~X!  
} N*$L#L$*  
/** :=cZ,?PQp1  
* @param data I}hY @  
* @param i ~k[mowz0  
* @param j OF_g0Zu  
* @return [+8in\T i  
*/ <n|ayxA)  
private int partition(int[] data, int l, int r,int pivot) { 1;FtQnvH  
do{ 'Z{_w s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jwQ(E  
SortUtil.swap(data,l,r); 93]67PL#+  
} [gE_\=FSKu  
while(l SortUtil.swap(data,l,r); ZOIx+%/Vd#  
return l; FbU98n+z  
} 8x/]H(J  
A^3M~  
} f8JWg9 m  
|08'd5  
改进后的快速排序: q y\Z2k  
lk/[xQ/  
package org.rut.util.algorithm.support; edZhI  
ymo].  
import org.rut.util.algorithm.SortUtil; Wm#F~<$  
b>]MZhLJe  
/** /UP1*L  
* @author treeroot T-)lnrs^  
* @since 2006-2-2 g\~n5=-D  
* @version 1.0 _GF{Duxh  
*/ WH^^.^(i  
public class ImprovedQuickSort implements SortUtil.Sort { .d?2Kc)SV\  
NG\g_^.M  
private static int MAX_STACK_SIZE=4096; L,7+26XV"B  
private static int THRESHOLD=10; `"RT(` m  
/* (non-Javadoc) 1/J3 9Y~+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]mZN18#  
*/ |g1~-  
public void sort(int[] data) { `SM37({c  
int[] stack=new int[MAX_STACK_SIZE]; s1kG:h2|$  
!U[/P6 +0  
int top=-1; d,+a}eTP'  
int pivot; =b_/_b$q  
int pivotIndex,l,r; efUa[XO  
L<H zPg  
stack[++top]=0;  J]4pPDm  
stack[++top]=data.length-1; O+ghw1/  
Zog&:]P'F  
while(top>0){ :ND e<6?u  
int j=stack[top--]; OGWZq(c"6  
int i=stack[top--]; 1ww#]p`1  
Sece#K2J|  
pivotIndex=(i+j)/2; Bp9_\4  
pivot=data[pivotIndex]; ,We'A R3X  
2uT"LW/(H  
SortUtil.swap(data,pivotIndex,j); Mv_-JE9#>o  
sp8P[W1a  
file://partition Wz&[ cj  
l=i-1; )Rc  
r=j; u6MHdCJ0y  
do{ {NTMvJLm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3;Y 9<  
SortUtil.swap(data,l,r); ]@wKm1%v  
} <1eD*sC?g  
while(l SortUtil.swap(data,l,r); Z3qr2/  
SortUtil.swap(data,l,j); \m%Z;xKG  
5Ei4$T  
if((l-i)>THRESHOLD){ z{wZLqG  
stack[++top]=i; YMr2Dv\y  
stack[++top]=l-1;  `;HZO8  
} hn[lhC  
if((j-l)>THRESHOLD){ f~ P~%  
stack[++top]=l+1; }F4%5go  
stack[++top]=j; T o$D [-  
} - jWXE  
,"U|gJn|^  
} /C6$B)w_*{  
file://new InsertSort().sort(data); 5a%i%+;N  
insertSort(data); 'BX U '  
} `;)op3A'  
/** ,Fzuo:{uy  
* @param data fM!@cph(8  
*/ p|n!R $_g\  
private void insertSort(int[] data) { (q}{;  
int temp; ,Q,3^v-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OICH:(t_  
} QP7N#mh  
} /RemLJP F  
} Rc(E';uc  
4|h>.^  
} 0w!:YB,}  
D:0?u_[W  
归并排序: "sJ@_lp  
vRMGNz_P7[  
package org.rut.util.algorithm.support; oD 3Q{ e  
b&P2VqYgl  
import org.rut.util.algorithm.SortUtil; 0) Q*u  
&I7T ?  
/** K`8$+JDP+  
* @author treeroot tvOyT6]  
* @since 2006-2-2 6ANA oWg*  
* @version 1.0 RU+F~K<  
*/ bo[[<j!"I  
public class MergeSort implements SortUtil.Sort{ !laOiH  
IeAUVR S)  
/* (non-Javadoc) u& <NBxY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qF4=MQm\aE  
*/ ^~W s4[Guo  
public void sort(int[] data) { ofuQ`g1hb  
int[] temp=new int[data.length]; J5SOPG  
mergeSort(data,temp,0,data.length-1); sfR0wEqI  
} VWW(=j  
_Kg"l5?B  
private void mergeSort(int[] data,int[] temp,int l,int r){ fKNDl\SD  
int mid=(l+r)/2; V"5LNtf  
if(l==r) return ; q],/%W  
mergeSort(data,temp,l,mid); -5Aqf\  
mergeSort(data,temp,mid+1,r); D)bR-a_^  
for(int i=l;i<=r;i++){ lB(P+yY,/'  
temp=data; I 8 Ls_$[  
} e!P]$em|1E  
int i1=l; ni-4 ~k  
int i2=mid+1; VL2ACv(  
for(int cur=l;cur<=r;cur++){ $O,IXA  
if(i1==mid+1) S<>u  
data[cur]=temp[i2++]; tx]!|x" F  
else if(i2>r) 4_w{~  
data[cur]=temp[i1++]; Eg0qY\'  
else if(temp[i1] data[cur]=temp[i1++]; =z9FjK  
else Z(hRwIOF  
data[cur]=temp[i2++]; ?}<Wmy2A  
} 2fG[q3`  
} )P9&I.a8  
E[tEW0ub  
} 9On(b|mT  
M][Zu[\*  
改进后的归并排序: J#Agk^Y 5  
(z^9 87G  
package org.rut.util.algorithm.support; A~#w gLGn  
y])z,#%ED  
import org.rut.util.algorithm.SortUtil; kRB2J3Nt.  
Df0m  
/** xB,(!0{`  
* @author treeroot nj7\vIR7  
* @since 2006-2-2 zwdi$rM5  
* @version 1.0 U&L?IT=x  
*/ yA^+<uz}  
public class ImprovedMergeSort implements SortUtil.Sort { JV;-P=o1B  
;(;{~1~  
private static final int THRESHOLD = 10; ){"-J&@?  
Fo GSCg%  
/* AHdh]pfH  
* (non-Javadoc) SAN/ fnM  
* v9l|MI15V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )U:W 9%  
*/ xkmqf7w  
public void sort(int[] data) { Uf<IXx&;  
int[] temp=new int[data.length]; ( 2i{8  
mergeSort(data,temp,0,data.length-1); 0uS6F8x@  
} }yMA s  
ZR@PqS+O/  
private void mergeSort(int[] data, int[] temp, int l, int r) { Un{9reX5  
int i, j, k; k{.`=j  
int mid = (l + r) / 2; o;7_*=i  
if (l == r) U$AV"F&!&}  
return; *)um^O  
if ((mid - l) >= THRESHOLD) c~{)vL0K  
mergeSort(data, temp, l, mid); P> i lRb  
else p^?]xD(  
insertSort(data, l, mid - l + 1); *N3X"2X:  
if ((r - mid) > THRESHOLD) ^RE("'+  
mergeSort(data, temp, mid + 1, r); 4%,E;fB?=  
else GB` G(a  
insertSort(data, mid + 1, r - mid); 0j(/N  
z*OQ4_  
for (i = l; i <= mid; i++) { qn#f:xltu  
temp = data; v="2p8@F  
} Yb Dz{m  
for (j = 1; j <= r - mid; j++) { 2^T`> ?{X  
temp[r - j + 1] = data[j + mid]; LM?UV)  
} EmubpUS;  
int a = temp[l];  ylBjuD+  
int b = temp[r]; @/0-`Y@?  
for (i = l, j = r, k = l; k <= r; k++) { Q:sw*7"F  
if (a < b) { V~_aM@q1  
data[k] = temp[i++]; [{cMEV&  
a = temp; ucgp=bye  
} else { g=_@j`  
data[k] = temp[j--]; !(-S?*64l  
b = temp[j]; 0ntf%#2{  
} D}6~2j  
} B kWoK/f4  
} ,]qTJ`J  
)H`1CcT  
/** kPg| o3H  
* @param data sQ>L3F;A`  
* @param l Zh,{e/j  
* @param i FT+[[9i  
*/ QeZK&^W  
private void insertSort(int[] data, int start, int len) { (2fWJ%7VG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FCMV1,  
} 13KfI  
} Aq:1  
} ^YwTO/Q|  
} Zcg@]Sx(I  
)Me$BK>  
堆排序: ^-GzWT  
u AmDXqJ 3  
package org.rut.util.algorithm.support; qKL mL2O  
Y}Gf%Xi,  
import org.rut.util.algorithm.SortUtil; '#p2v'A  
RNB ha&  
/** oUG!=.1}K5  
* @author treeroot oz[: T3oE>  
* @since 2006-2-2 qH1&tW$  
* @version 1.0 B6gn(w3  
*/ F2 #s^4Ii  
public class HeapSort implements SortUtil.Sort{ sp'f>F2]  
c^s%t:)K  
/* (non-Javadoc) -AcVVK&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bw& U[|A0%  
*/ MX\v2["FoV  
public void sort(int[] data) { "Gh5 ^$w?j  
MaxHeap h=new MaxHeap(); c.;}e:)s  
h.init(data); :$J4T;/{  
for(int i=0;i h.remove(); >wOqV!0<  
System.arraycopy(h.queue,1,data,0,data.length); O ELh6R  
} o+j~~P  
9yt)9f  
private static class MaxHeap{ /3pvq%i  
AYnk.H-v  
void init(int[] data){ \sZT[42  
this.queue=new int[data.length+1]; ?1kXV n$  
for(int i=0;i queue[++size]=data; *[SOz)  
fixUp(size); z;#]xCV  
} ?@uyqi~:U  
} GjD^\d/  
B{ptP4As-  
private int size=0; Dq:>]4%  
2LqJ.HH  
private int[] queue; =Mby;wQ?|  
7I0[Ii  
public int get() { (m3 <)  
return queue[1]; ZP}NFh%,u  
} C@#KZ`c)  
-m"9v%>Y  
public void remove() { e [ 9  
SortUtil.swap(queue,1,size--); ;[,r./XmH  
fixDown(1); LI`H,2Km  
} h .%)RW?  
file://fixdown V9dJNt'Ui  
private void fixDown(int k) { @3_[NI%  
int j; )] C"r_  
while ((j = k << 1) <= size) { ~p* \|YC  
if (j < size %26amp;%26amp; queue[j] j++; Q`{2 yU:r  
if (queue[k]>queue[j]) file://不用交换 5tG\5  
break; [d^ [Y:I'\  
SortUtil.swap(queue,j,k); ]?3-;D.eG  
k = j; 2C59fXfd  
} }3DZ`8u  
} OoqA`%  
private void fixUp(int k) { 4/J"}S  
while (k > 1) { (l ]_0-Z  
int j = k >> 1; Ak'=/`+p  
if (queue[j]>queue[k]) L7rH=gZ&!]  
break; E-?@9!2 &  
SortUtil.swap(queue,j,k); Q GoBugU  
k = j; OB5t+_ s  
} 6 #m:=  
} 4u}jkd$]*  
p1`") $  
} sb"h:i>O4  
7~ =r9-&G  
} p/WE[8U  
}*>xSb1  
SortUtil: f~ -qjEWm  
2[QyH'"^E  
package org.rut.util.algorithm; 4ynGXJmMlR  
fB"It~ p  
import org.rut.util.algorithm.support.BubbleSort; dm`:']?  
import org.rut.util.algorithm.support.HeapSort; f C_H0h3  
import org.rut.util.algorithm.support.ImprovedMergeSort; t}x^*I$*  
import org.rut.util.algorithm.support.ImprovedQuickSort; vL ]z3  
import org.rut.util.algorithm.support.InsertSort; Ca k-J~=  
import org.rut.util.algorithm.support.MergeSort; 2}xvM"k=k  
import org.rut.util.algorithm.support.QuickSort; $dkkgsw 7  
import org.rut.util.algorithm.support.SelectionSort; Cj1nll8c  
import org.rut.util.algorithm.support.ShellSort; 0Ma3  
2'T uS?  
/** & T&>4I!'M  
* @author treeroot \VAm4   
* @since 2006-2-2 w3E#v&"=Y  
* @version 1.0 _<m yM2z  
*/ B82SAV/O  
public class SortUtil { ]3&BLq  
public final static int INSERT = 1; W~Ae&gcn#  
public final static int BUBBLE = 2; a=&{B'^G  
public final static int SELECTION = 3; )7;E,m<:tO  
public final static int SHELL = 4; (>M? iB  
public final static int QUICK = 5; $-p#4^dg  
public final static int IMPROVED_QUICK = 6; :/~TV   
public final static int MERGE = 7; 6 H' W]T&  
public final static int IMPROVED_MERGE = 8; uB>OS 1=  
public final static int HEAP = 9; 3\E G  
.g8db d  
public static void sort(int[] data) { l0nm>ps'D  
sort(data, IMPROVED_QUICK); D5$| vv1  
} E9~}%&  
private static String[] name={ PCs`aVZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l,@rB+u  
}; #Zj3SfU~`  
V8}jFib  
private static Sort[] impl=new Sort[]{ {2=f,,|+f  
new InsertSort(), i&Xjbcbp  
new BubbleSort(), t~kh?u].j  
new SelectionSort(), 'H8;(Rw  
new ShellSort(), u)9YRMl  
new QuickSort(), 716r/@y$6  
new ImprovedQuickSort(), /M5R<rl  
new MergeSort(), eYD-8*  
new ImprovedMergeSort(), 6O| rI>D  
new HeapSort() CA]u3bf~  
}; 2kW*Z7@D  
A| s\5"??  
public static String toString(int algorithm){ ;nbbKQ]u  
return name[algorithm-1]; 4"d'iY  
} A40Q~X  
i(an]%'v  
public static void sort(int[] data, int algorithm) { 3fd?xhWbN  
impl[algorithm-1].sort(data); 7;3;8Q FX  
} $9rQ w1#e  
D]NJ ^.X  
public static interface Sort { k4+Q$3"  
public void sort(int[] data); Ux+UcBKm-  
} 9 `T2  
qLa6c2o,  
public static void swap(int[] data, int i, int j) { yP0XA=,Y  
int temp = data; v]c+|nRs  
data = data[j]; I08W I u  
data[j] = temp; u`Abko<D  
} ':#DROe!  
} :)DvZxHE@  
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