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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。 `5q`ibyPI  
插入排序: u2Rmp4]  
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package org.rut.util.algorithm.support; T-<^mX[}  
*>\RGL;]8  
import org.rut.util.algorithm.SortUtil; Z;%qpsq  
/** yM#W,@  
* @author treeroot  ym${4  
* @since 2006-2-2 w#JF7;  
* @version 1.0 ]8H;LgM2  
*/ Oe;9[=L[  
public class InsertSort implements SortUtil.Sort{ {J99F  
8#kFS@  
/* (non-Javadoc) ?m~x%[Vn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z Gz5|u  
*/ SM^6+L"BE  
public void sort(int[] data) { ]B5\S  
int temp; O+'Pq,hn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HP?e?3.T  
} 5_`.9@eh.  
} /&kTVuN"(  
} 071w o7  
FPcgQ v;p  
} PE4{;|a }  
C?E;sRr0  
冒泡排序: @${!C\([1  
@j^qT-0M  
package org.rut.util.algorithm.support; ;9prsvf  
| C2k(  
import org.rut.util.algorithm.SortUtil; 'z!I#Y!Y  
BJ&>'rc  
/** x "N,oDs  
* @author treeroot wI`uAZ="  
* @since 2006-2-2 4vy!'r@   
* @version 1.0 Hq%`DWus\  
*/ g[eI-J+F  
public class BubbleSort implements SortUtil.Sort{ _ROe!w  1  
ZZeqOu7^  
/* (non-Javadoc) u\Xi]pZ@X]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b LxV  
*/ wS:323 !l$  
public void sort(int[] data) { <'gCIIa2  
int temp; I/Vlw-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xE0+3@_>>  
if(data[j] SortUtil.swap(data,j,j-1); _$, .NK,6  
} $'&`k,a3|P  
} bBDgyFSI <  
} Rf8|-G-}#  
} H5qa7JMZ  
_ -?)-L&g  
} !_c<j4O  
6.By)L  
选择排序: U+'?#" J8(  
vn kktD'n  
package org.rut.util.algorithm.support; 7p~@S4  
dXdU4YJ X  
import org.rut.util.algorithm.SortUtil; sN;U,{  
yJKezIL\z  
/** 1x\%VtO>\b  
* @author treeroot b"f4}b  
* @since 2006-2-2 MKQa&Dvw  
* @version 1.0 *^NC5=A(d  
*/ 0?sIod  
public class SelectionSort implements SortUtil.Sort { 35c9c(A  
lSbAZ6  
/* S:t7U %  
* (non-Javadoc) u`("x5sa  
* "+)ey> _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H9 't;Do  
*/ |5Z@7  
public void sort(int[] data) { ff{ESFtD  
int temp; 9|OQHy  
for (int i = 0; i < data.length; i++) { 55yP.@i9J  
int lowIndex = i; ^@tn+'.  
for (int j = data.length - 1; j > i; j--) {  [bv.`  
if (data[j] < data[lowIndex]) { O'!k$iJNb  
lowIndex = j; CBO8^M<K  
} #" f:m`  
} t#<q O6&B  
SortUtil.swap(data,i,lowIndex); @YT=-  
} %VwB ?  
} X?1 :Z|pJ  
/] R]7  
} r]8B6iV  
4RdpROK  
Shell排序: B8;ZOLAU  
(M[Kh ^  
package org.rut.util.algorithm.support; H]}- U8}sp  
h~F uuL  
import org.rut.util.algorithm.SortUtil; l "d&Sgnj  
VF 6@;5p  
/** 5V%K'a(  
* @author treeroot OP<@Xz  
* @since 2006-2-2 wRLkO/Fw  
* @version 1.0 Kj'm<]u  
*/ Rfgc^3:j  
public class ShellSort implements SortUtil.Sort{ B4J^ rzK  
VS 8|lgQ  
/* (non-Javadoc)  {kmaMP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Que)kjp  
*/ SYl :X   
public void sort(int[] data) { .Yh-m  
for(int i=data.length/2;i>2;i/=2){ {Y IVHl  
for(int j=0;j insertSort(data,j,i); aY"qEH7]  
} y0rT=kU  
} \8<bb<`  
insertSort(data,0,1); W]rXt,{ &  
} HeF[H\a<  
8U=M.FFp  
/** "qwRcuHY  
* @param data iRPd=)  
* @param j Ij4\*D!  
* @param i ( XE`,#  
*/ ~A"ODLgU9  
private void insertSort(int[] data, int start, int inc) { {;z3$/JB  
int temp; )V9$ P)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N%>/ e'(  
} a0AIq44  
} PJb_QL!9  
} hJaqW'S  
F\>`j   
} i8A5m@,G  
^t#]E#  
快速排序: F,4Q  
Hm4lR{A  
package org.rut.util.algorithm.support; Tm` QZh3  
g ,Q!F  
import org.rut.util.algorithm.SortUtil; {Y\hr+A  
3+!N[6Od9  
/** Ue-HO  
* @author treeroot :Z`4ea"w  
* @since 2006-2-2 U,g!KN3P  
* @version 1.0 %f, 9  
*/ cZ o]*Gv.  
public class QuickSort implements SortUtil.Sort{ ts)0+x  
e6{/e+/R  
/* (non-Javadoc) "I_3!Yu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '!En,*'IS  
*/ "jAV7lP  
public void sort(int[] data) { 7E|0'PPR  
quickSort(data,0,data.length-1); (&X"~:nm2  
} l*%?C*  
private void quickSort(int[] data,int i,int j){ |=GRPvvi  
int pivotIndex=(i+j)/2; pY-iz M L  
file://swap 'v\!}6  
SortUtil.swap(data,pivotIndex,j); Sgr<z d'b  
^3*gf}  
int k=partition(data,i-1,j,data[j]); }S%a]  
SortUtil.swap(data,k,j); 2]Y (<PC  
if((k-i)>1) quickSort(data,i,k-1); ,j2qY'wi  
if((j-k)>1) quickSort(data,k+1,j); !%5{jO1  
in B}ydk  
} KF7f<  
/** QmgwIz_  
* @param data 2X6y^f';\  
* @param i 93YD\R+q  
* @param j > %d]"]  
* @return ?J)%.~!  
*/ 9lny[{9  
private int partition(int[] data, int l, int r,int pivot) { xcoYo  
do{ y )/d-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u4Vc:n  
SortUtil.swap(data,l,r); 0aGfz=V&  
} vy-{BH  
while(l SortUtil.swap(data,l,r); E8IWHh_  
return l; Bt.W_p  
} tD>m%1'&  
q9Fc0(&Vf  
} 5X~ko>  
~ |!q>z  
改进后的快速排序: sU{+.k{  
]kc_wFT<  
package org.rut.util.algorithm.support; BRH:5h  
vtr:{   
import org.rut.util.algorithm.SortUtil; vqL{~tR  
`cZG&R  
/** uomFE(  
* @author treeroot '^P Ud`  
* @since 2006-2-2 s$Roe(J  
* @version 1.0 >A1Yn]k  
*/ L.|GC7$0  
public class ImprovedQuickSort implements SortUtil.Sort { D Zh6/n#q  
KAUYE^  
private static int MAX_STACK_SIZE=4096; 9:BGA/?  
private static int THRESHOLD=10; 2RM1-j ($  
/* (non-Javadoc) gqe z-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8V4Qyi|@F  
*/ uj8]\MY  
public void sort(int[] data) { ~2"|4  
int[] stack=new int[MAX_STACK_SIZE]; vtvr{Uqo@  
l~f +h?cF  
int top=-1; ~\i uV  
int pivot; ;1eu8N8  
int pivotIndex,l,r; -"a])- j  
Y}|78|q*  
stack[++top]=0; ([$F5 q1TR  
stack[++top]=data.length-1; _I'O4s1S  
ClfpA?vv  
while(top>0){ cHR}`U$  
int j=stack[top--]; -Fl3m  
int i=stack[top--]; .h*&$c/l  
` D4J9;|;]  
pivotIndex=(i+j)/2; Y,)9{T  
pivot=data[pivotIndex]; r3*wH1n  
g%\e80~1(  
SortUtil.swap(data,pivotIndex,j); pp{%\td  
I5 2wTl0  
file://partition gW*ee  
l=i-1; ^?juY}rZ=|  
r=j; *|`'L  
do{ X;}_[ =-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sI^1c$sBN  
SortUtil.swap(data,l,r); 2y<d@z:K  
} bNL E=#ro  
while(l SortUtil.swap(data,l,r); }hBv?B2/1  
SortUtil.swap(data,l,j); 0+S:2i/G  
WMI/Y 9N  
if((l-i)>THRESHOLD){ [NKWudq  
stack[++top]=i; ? X:RrZ:/  
stack[++top]=l-1; `zep`j&8^  
} NS&~n^*k<  
if((j-l)>THRESHOLD){ 8 3<kaeu,^  
stack[++top]=l+1; i[YYR,X|  
stack[++top]=j; QZwRg&d<o  
} }D=h"\_=  
`Cb$8;)z  
} NZ.aI{  
file://new InsertSort().sort(data); bF flA  
insertSort(data); &0ULj6jj  
} !p9BH6$`  
/** s"Kp+tTWj  
* @param data ow`\7qr  
*/ _ l/6Qpf  
private void insertSort(int[] data) { AV8TP-Ls+  
int temp; *:d_~B?Tn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E+3~w?1  
} Pb~S{):  
} 5hDE&hp  
} cb UVeh7Q  
+bQn2PG=  
} MM5#B!BB  
' u0{h  
归并排序: HX <;=m  
+SP5+"y@  
package org.rut.util.algorithm.support; oVsl,V  
$[]=6.s  
import org.rut.util.algorithm.SortUtil; /\\C&Px  
ivGxtx  
/** U'#{v7u  
* @author treeroot N;D+]_;0|  
* @since 2006-2-2 "#JoB X@yE  
* @version 1.0 'kUrSM'*$N  
*/ $MsM$]~  
public class MergeSort implements SortUtil.Sort{ OPjscc5  
%M^bZ?  
/* (non-Javadoc) 8[y7(Xw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tdt6*  
*/ 1-JWqV(#?  
public void sort(int[] data) { [S9nF  
int[] temp=new int[data.length]; $23R%8j   
mergeSort(data,temp,0,data.length-1); Y< M}'t  
} }M9'N%PU  
=+"XV8Fi,  
private void mergeSort(int[] data,int[] temp,int l,int r){ m1`ln5(R  
int mid=(l+r)/2; "/\:Fdc^  
if(l==r) return ; g6*}& .&  
mergeSort(data,temp,l,mid); 5 WAsEP  
mergeSort(data,temp,mid+1,r); Dic(G[  
for(int i=l;i<=r;i++){ E]7G4  
temp=data; xr?r3Y~^e  
} R'80{  
int i1=l; JUXK}0d%eN  
int i2=mid+1; W>, b1_k c  
for(int cur=l;cur<=r;cur++){ 4<O[d  
if(i1==mid+1) 3g6R<Ez  
data[cur]=temp[i2++]; I]$kVa1iN  
else if(i2>r) ,$G89jSM  
data[cur]=temp[i1++]; "iKK &%W  
else if(temp[i1] data[cur]=temp[i1++]; B$lbp03z  
else u(lq9; ;Th  
data[cur]=temp[i2++]; g1}RA@9  
} koie  
} /evh.S  
6: M   
} ;aFQP:l/  
Dbtw>:=  
改进后的归并排序: I4") ;T3  
JEAqSZak#  
package org.rut.util.algorithm.support; y[$e]N  
{!EbGIh  
import org.rut.util.algorithm.SortUtil; "%Rx;xw|  
v/m6(z  
/** ,Wdyg8&.  
* @author treeroot nH_A`m3%/  
* @since 2006-2-2 +q2l,{|?  
* @version 1.0 mqE&phF,  
*/ f j"S|]e  
public class ImprovedMergeSort implements SortUtil.Sort { V8N<%/ A=  
M1oCa,8M+  
private static final int THRESHOLD = 10; 9w AP%xh  
*/ qv}  
/* 9^}GUJy?  
* (non-Javadoc) GEvif4  
* +^"|FtKhE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %b_zUFHPp  
*/ z24-h C  
public void sort(int[] data) { bGSgph  
int[] temp=new int[data.length]; _x>u "w  
mergeSort(data,temp,0,data.length-1); /Ia#udkNMp  
} U3Dy:K[  
u4Xrvfb,  
private void mergeSort(int[] data, int[] temp, int l, int r) { ZBnf?fU  
int i, j, k; [qb#>P2G3  
int mid = (l + r) / 2; 2R1W[,Ga!  
if (l == r) T[7- 3[w<)  
return; lw Kr$X4  
if ((mid - l) >= THRESHOLD) ME7JU|@Z  
mergeSort(data, temp, l, mid); D)mqe-%1  
else '7xY ,IY  
insertSort(data, l, mid - l + 1); .vb*|So  
if ((r - mid) > THRESHOLD) Q"(i  
mergeSort(data, temp, mid + 1, r); @ 8SYV}0H  
else <2R=!n@b\  
insertSort(data, mid + 1, r - mid); 5 &VLq  
aFbA=6  
for (i = l; i <= mid; i++) { GCIm_ n  
temp = data; fa6L+wt4O  
} _H;ObTiB  
for (j = 1; j <= r - mid; j++) { &K\di*kN  
temp[r - j + 1] = data[j + mid]; R!-RSkB  
} <4VUzgX2  
int a = temp[l]; 3 =S.-  
int b = temp[r]; f:=?"MX7  
for (i = l, j = r, k = l; k <= r; k++) { %f^TZ,q$  
if (a < b) { |M+ !O93  
data[k] = temp[i++]; K~Xt`  
a = temp; XCk \#(VSE  
} else { xo]|m\#k5E  
data[k] = temp[j--]; g{nu3F}8){  
b = temp[j]; 2R)Y}*VX  
} le1'r>E$  
} s^E%Uk m  
} K!'9wt  
'g$|:bw/  
/** Ok,hm.|  
* @param data 0BBWuNF.  
* @param l L >xN7N3&m  
* @param i T}g;kppC  
*/ _jr%s  
private void insertSort(int[] data, int start, int len) { BG=h1ybz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ni3^J5XW  
} V-)q&cbW]q  
} oS]XE!^M  
} \=nY&Ml  
} *VD-c  
./[t'dgC  
堆排序: 4|*_mC  
A}W&=m8!  
package org.rut.util.algorithm.support; ,(]hykbXp  
F*(<`V  
import org.rut.util.algorithm.SortUtil; m'a3}vRV(  
TMq\}k-I5  
/** [P"#?7 N  
* @author treeroot *P9)M%  
* @since 2006-2-2 F9Mv$ g79  
* @version 1.0 &%FpNU9  
*/ 0OlB;  
public class HeapSort implements SortUtil.Sort{ IV!&jL  
Pxl7zz&pl=  
/* (non-Javadoc) &a7KdGP8V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Y[mh@(  
*/ x! Z|^q  
public void sort(int[] data) { 6o {41@v(  
MaxHeap h=new MaxHeap(); _,~/KJp  
h.init(data); z}kD:A)a  
for(int i=0;i h.remove(); 3'IF? ](]U  
System.arraycopy(h.queue,1,data,0,data.length); XN??^1{J}]  
} "S*lI^8Z!  
\-c70v63X  
private static class MaxHeap{ Azu$F5G!n  
:Oy9`vv  
void init(int[] data){ v vOG]2z  
this.queue=new int[data.length+1]; & [4Gv61  
for(int i=0;i queue[++size]=data; _g 3hXsA  
fixUp(size); Un7jzAvQ  
} MdCEp1Z  
} :+en8^r%  
~%>ke  
private int size=0; Q]66v$  
3>c<E1   
private int[] queue; \_0nH`  
t13wQ t  
public int get() { ax,%07hJ  
return queue[1]; ^ WidA-  
} 0~)cAKus  
b,~6cDU  
public void remove() { Bv@NE2  
SortUtil.swap(queue,1,size--); 1Hk`i%  
fixDown(1); uq{w1O5  
} 1 1O^)_|c  
file://fixdown 1iig0l6\m  
private void fixDown(int k) { #r>  
int j; D&:,,Dp  
while ((j = k << 1) <= size) { <mi*AY  
if (j < size %26amp;%26amp; queue[j] j++; 6-j><'  
if (queue[k]>queue[j]) file://不用交换 evz{@;.R  
break; W(Xb]t=19  
SortUtil.swap(queue,j,k); eM{,B  
k = j; K-Y;[+#g1o  
} @tR:}J*9s  
} 0%#ZupN  
private void fixUp(int k) { ~#pQWa5  
while (k > 1) { 5Ta<$t  
int j = k >> 1; r3{Cuz  
if (queue[j]>queue[k]) E.zY(#S  
break; Hq ]f$Q6:  
SortUtil.swap(queue,j,k); .\".}4qQ  
k = j; 1T!(M"'Ij  
} tp7cc;0  
} vYcea  
NirG99kyo  
} r[ni{ &  
ot8UuBq  
} !.Eua3:V*  
4'P otv@/  
SortUtil: |@!4BA  
!EB<e5}8wK  
package org.rut.util.algorithm; F4`ud;1H  
4|ML#aRz  
import org.rut.util.algorithm.support.BubbleSort; _H} 8eU  
import org.rut.util.algorithm.support.HeapSort; P uYAoKG  
import org.rut.util.algorithm.support.ImprovedMergeSort; $~W =)f9  
import org.rut.util.algorithm.support.ImprovedQuickSort; WzDL(~m+Z  
import org.rut.util.algorithm.support.InsertSort; Py_yIwQqg  
import org.rut.util.algorithm.support.MergeSort; Psm5J80}n  
import org.rut.util.algorithm.support.QuickSort; 0go{gUI  
import org.rut.util.algorithm.support.SelectionSort; Y HSdaocp  
import org.rut.util.algorithm.support.ShellSort; FhpS#, Y$  
$pr\"!|z  
/** KP,#x$Bg  
* @author treeroot 1Tm,#o  
* @since 2006-2-2 1wAD_PI|BH  
* @version 1.0 bvzNur_  
*/ q|r^)0W  
public class SortUtil { % 8u97f W  
public final static int INSERT = 1; Ymt.>8L  
public final static int BUBBLE = 2; (_1(<Jw  
public final static int SELECTION = 3; 6&xpS9  
public final static int SHELL = 4; z0!k  
public final static int QUICK = 5; b\^X1eo  
public final static int IMPROVED_QUICK = 6; = hL;Q@inb  
public final static int MERGE = 7; |Y"nZK,  
public final static int IMPROVED_MERGE = 8; J[ ;g \  
public final static int HEAP = 9; &6deds  
a=@]Ov/  
public static void sort(int[] data) { "Tt5cqUQoY  
sort(data, IMPROVED_QUICK); PuO5@SP~  
} w5Lev}Rb  
private static String[] name={ uW;[FTcqy$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" > oh7f|  
}; f"9aL= 3  
\Hb"bv  
private static Sort[] impl=new Sort[]{ S*PcK>  
new InsertSort(), bAOL<0RS9`  
new BubbleSort(), @-zL"%%dw'  
new SelectionSort(), N_L~oX_  
new ShellSort(), [L(qrAQ2|z  
new QuickSort(), wB'GV1|jL  
new ImprovedQuickSort(), 'rl?'~={p  
new MergeSort(), e\)r"!?H`  
new ImprovedMergeSort(), &;3iHY;  
new HeapSort() g A+p^`;[  
}; Y.yiUf/Q  
AdU0 sZ+&c  
public static String toString(int algorithm){ Y(mnGaVn  
return name[algorithm-1]; x_L5NsO:  
} 1egq:bh  
(sDZ&R  
public static void sort(int[] data, int algorithm) { vd{ban9  
impl[algorithm-1].sort(data); 'Hf+Y/`  
} <DR$WsDG  
fbg:rH\_  
public static interface Sort { Dm{9;Abs%  
public void sort(int[] data); p ; ]Qxh  
} >uLWfk+y1  
H^ds<I<)  
public static void swap(int[] data, int i, int j) { ^ruz-N^Y!  
int temp = data; 2y`X)  
data = data[j]; 3R>"X c  
data[j] = temp; /0m0""  
} Nb3uDA5R  
} "50 c<sZSB  
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