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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。 ^Kg n:l  
插入排序: 4Y$\QZO  
aL%E#  
package org.rut.util.algorithm.support; |R1T;J<[  
SiUu**zC  
import org.rut.util.algorithm.SortUtil; yOt#6Vw  
/** Fn7OmxfD  
* @author treeroot Qn,6s%n  
* @since 2006-2-2 _&/ {A|n  
* @version 1.0 IzJq:G.  
*/ B0%=! &  
public class InsertSort implements SortUtil.Sort{ [orL.D]  
[iEz?1.,  
/* (non-Javadoc) S>r",S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VX&PkGi?o  
*/ _bi)d201  
public void sort(int[] data) { )Qd x  
int temp; ddyX+.LMk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HC/z3b;  
} !3Pbu=(cte  
} ~7U~   
} r4fHD~#l{  
naW!b&:  
} >W;NMcN~  
Id##367R  
冒泡排序: y;uR@{  
31@Lr[!  
package org.rut.util.algorithm.support; t2s/zxt  
10i$b<O  
import org.rut.util.algorithm.SortUtil; "J`&"_CyZ  
 +l/v`=C  
/** CF2Bd:mfZ  
* @author treeroot :Ys~Lt54  
* @since 2006-2-2 S.)Jp -&K  
* @version 1.0 l6&\~Z(  
*/ avL_>7q  
public class BubbleSort implements SortUtil.Sort{ =jJEl=*S  
C!*.jvhT  
/* (non-Javadoc) qQi\/~Y[:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4] uj+J  
*/ 6:O<k2=2  
public void sort(int[] data) { }}{n|l+R5  
int temp; weSq |f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ kB> ~Tb0  
if(data[j] SortUtil.swap(data,j,j-1); 9MYk5q.X:  
} =y4dR#R(\  
} QCF'/G  
} ^w.hI5ua)  
} ~?AEtl#&"  
C=/B\G/.9  
} J+J,W5t^  
#uw&u6*\q  
选择排序: ]m b8R:a1  
U8w_C\Q  
package org.rut.util.algorithm.support; [/UchU]DT  
*q*3SP/  
import org.rut.util.algorithm.SortUtil; Wc[,kc  
a/,>fv9;$  
/** akxNT_   
* @author treeroot u] };QR  
* @since 2006-2-2 |zYOCDFf  
* @version 1.0 {O^u^a\m  
*/ !qj[$x-ns  
public class SelectionSort implements SortUtil.Sort { <4"-tYa  
La;G S  
/* ^taN?5  
* (non-Javadoc) 6 :] N%  
* GWnIy6TH l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zKO7`.*  
*/ LdV&G/G-#D  
public void sort(int[] data) { S{rltT-  
int temp; iqQT ^  
for (int i = 0; i < data.length; i++) { 8w&-O~M  
int lowIndex = i; UJ)pae  
for (int j = data.length - 1; j > i; j--) { _`|1B$@x  
if (data[j] < data[lowIndex]) { d]pb1ECuu  
lowIndex = j; (~=.[Y  
} En?V\|,  
} xzm]v9k&  
SortUtil.swap(data,i,lowIndex); z%%O-1   
} !hBpon  
} jO-?t9^  
@h%V:c  
} i#]e&Bru5  
mm-s?+&M;  
Shell排序: 6lSz/V;  
G^~[|a 4`  
package org.rut.util.algorithm.support; sUZA!sv  
EiL#Dwx  
import org.rut.util.algorithm.SortUtil;  5&&4-  
2J ZR"P  
/** 0 =j }`  
* @author treeroot lW&(dn)}  
* @since 2006-2-2 ~#A}=, 4>  
* @version 1.0 +jGHR& A t  
*/ Z<-_Y]4j  
public class ShellSort implements SortUtil.Sort{ %9J@##+  
{AL EK   
/* (non-Javadoc) |h>PUt@LL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J:L+q} A  
*/ s[yWBew  
public void sort(int[] data) { Cbw *? 9d  
for(int i=data.length/2;i>2;i/=2){ (^d7K:-'  
for(int j=0;j insertSort(data,j,i); Je1d|1!3  
} bbK};u  
} WQK<z!W5  
insertSort(data,0,1); m+kP"]v  
} r ]DiB:.  
}TmOoi(X@  
/** FzT.9Vz7  
* @param data U(#<D7}  
* @param j .Pc>1#z&[  
* @param i t4WB^dHYp  
*/ ~s!Q0G^G  
private void insertSort(int[] data, int start, int inc) { a1U|eLmUb  
int temp; b(H{i}{]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /4:bx#;A  
} 1i76u!{U  
} B0fOAP1  
} n~N>;m P  
]gk1q{Ql<  
} Zd*$^P,|  
};/QK*  
快速排序: Z2% HQL2  
L"bOc'GfQ  
package org.rut.util.algorithm.support; =)[m[@,c  
=q4}(  
import org.rut.util.algorithm.SortUtil; HN5m%R&`  
I"07x'Ahq3  
/** 8\n3 i"  
* @author treeroot nw+~:c  
* @since 2006-2-2 )h{&O ,s  
* @version 1.0 )`\hK  
*/ rbw$=bX}  
public class QuickSort implements SortUtil.Sort{ ToXWFX  
`fu_){  
/* (non-Javadoc) ;H_/o+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dyo v}y  
*/ )dXa:h0RZ  
public void sort(int[] data) { _bFUr  
quickSort(data,0,data.length-1); \Pg~j\;F]  
} b\k]Jx  
private void quickSort(int[] data,int i,int j){ )pB#7aEw  
int pivotIndex=(i+j)/2; P6:9o}K6  
file://swap |Wh3a#  
SortUtil.swap(data,pivotIndex,j); L:R4&|E/t  
{f/qI`  
int k=partition(data,i-1,j,data[j]); f-ltV<C_  
SortUtil.swap(data,k,j); *c0H_8e  
if((k-i)>1) quickSort(data,i,k-1); @T'^V0!-q:  
if((j-k)>1) quickSort(data,k+1,j); t un}rdb  
\iuR+I  
} WJShN~ E  
/** 1|bXIY.J*  
* @param data +#}GmUwPG$  
* @param i d>NGCe  
* @param j 7FB?t<x  
* @return B VBn.ut  
*/ 8:ubtB  
private int partition(int[] data, int l, int r,int pivot) { Kb.qv)6i*  
do{ ?bTfQH vX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gD,&TW  
SortUtil.swap(data,l,r); ?YhDjQs  
} w_9^YO! !  
while(l SortUtil.swap(data,l,r); JzyCeM =  
return l; @KN+)qP  
} #lYyL`B+~  
P*|N)S)X%  
} q!Du J  
aO6\ e>  
改进后的快速排序: &qv~)ZM$  
Y0LZbT3  
package org.rut.util.algorithm.support; jUe@xi s<T  
#NS|9jW  
import org.rut.util.algorithm.SortUtil; ]z'&oz  
=~D? K9o  
/** Kkvc Zs'4m  
* @author treeroot L 4By5)  
* @since 2006-2-2 <I+kB^Er  
* @version 1.0 dbp\tWaW  
*/ :6n#y-9^1  
public class ImprovedQuickSort implements SortUtil.Sort { E)"19l|}B  
k[6J;/  
private static int MAX_STACK_SIZE=4096; /]0qI  
private static int THRESHOLD=10; nzq   
/* (non-Javadoc) rTPgHK]?l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ~?ab_CY  
*/ ^7gGtz2  
public void sort(int[] data) { t^s&1#iC  
int[] stack=new int[MAX_STACK_SIZE]; &i#$ia r  
_y@ 28t  
int top=-1; -IPo/?}  
int pivot; <r%K i`u(p  
int pivotIndex,l,r; T(J'p4  
LGP"S5V  
stack[++top]=0; !Sc"V.o @!  
stack[++top]=data.length-1; CSM"Kz`  
]e>qvSuYh  
while(top>0){ 6g(;2gY  
int j=stack[top--]; L9GLj Rp-  
int i=stack[top--]; q+g,?;Yx  
b--=GY))F  
pivotIndex=(i+j)/2; F%OP,>zl  
pivot=data[pivotIndex]; Y(Q 0m|3P  
Q$%apL  
SortUtil.swap(data,pivotIndex,j); C$[d~1t6  
d&AG~,&d|  
file://partition #'L<7t K  
l=i-1; i8iT}^  
r=j; x|H`%Z  
do{ z@*E=B1L  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Kv_2=]H  
SortUtil.swap(data,l,r); `Os=cMR  
} 6$u/N gS  
while(l SortUtil.swap(data,l,r); wu <0or2  
SortUtil.swap(data,l,j); i:lc]B  
%(CC  
if((l-i)>THRESHOLD){ f56yI]*N=<  
stack[++top]=i; .OPknC  
stack[++top]=l-1; ,Qj G|P  
} |IgR1kp+.  
if((j-l)>THRESHOLD){ Xp<q`w0I,  
stack[++top]=l+1; >m%_`68  
stack[++top]=j; y>o:5':;'  
} n,N->t$i  
#bOv}1,s  
} M/ 3;-g  
file://new InsertSort().sort(data); MxTJgY  
insertSort(data); ]OAU&t{  
} Z@~gN5@,M  
/** Y teIp'T  
* @param data bnxp[Qk|5  
*/ Mz@{_*2   
private void insertSort(int[] data) { 9~SPoR/_0  
int temp; u 3WU0Z`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {X!vb  
} eG=d)`.JaV  
} P,v7twc0M  
} r!r08y f  
2/-m-5A  
} ($di]lbsT  
corm'AJ/  
归并排序: |J $A%27  
A95f!a  
package org.rut.util.algorithm.support; 7HkO:/  
TWP@\ BQ  
import org.rut.util.algorithm.SortUtil; >A Ep\ *  
7@ym:6Y+]  
/** \!ZA#7  
* @author treeroot fu7x,b0p  
* @since 2006-2-2 7nt(Rtbsu  
* @version 1.0 Bm~^d7;Cw  
*/ mnt&!X4<  
public class MergeSort implements SortUtil.Sort{ b(Y   
9z,sn#-t  
/* (non-Javadoc) O4rjGTRF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H_xHoCLI  
*/ c <TEA  
public void sort(int[] data) { g#S X$k-O  
int[] temp=new int[data.length]; E|=x+M1sH  
mergeSort(data,temp,0,data.length-1); j{C~wy!J  
} >+O0W)g{o  
6IqPZ{g9K'  
private void mergeSort(int[] data,int[] temp,int l,int r){ u`ir(JIj]  
int mid=(l+r)/2; 8mX!mYO3c  
if(l==r) return ; +3,7 Apj  
mergeSort(data,temp,l,mid); KOixFn1  
mergeSort(data,temp,mid+1,r); 7%h;To-<6  
for(int i=l;i<=r;i++){ 2> a&m>  
temp=data; ,xwiJfG; ]  
} #  X (2  
int i1=l; ys=2!P-[#  
int i2=mid+1; 175e:\Tw  
for(int cur=l;cur<=r;cur++){ %1&X+s3  
if(i1==mid+1) `zoHgn7B9q  
data[cur]=temp[i2++]; c |0p'EQ  
else if(i2>r) !t%1G.  
data[cur]=temp[i1++]; P| NGAd  
else if(temp[i1] data[cur]=temp[i1++]; 5BrN uR$  
else V_i&@<J  
data[cur]=temp[i2++]; `E~"T0RX  
} Y3@+aA  
} :tWk K$  
PYQ0&;z  
} xM())Z|2  
"rdpA[>L  
改进后的归并排序: f]*;O+8$LN  
enk`I$Xx  
package org.rut.util.algorithm.support; ch# )XomN  
/qdvzv%T  
import org.rut.util.algorithm.SortUtil; FH</[7f;@N  
|s /)lA:9  
/** %YVPm*J ~  
* @author treeroot uc9h}QJ*  
* @since 2006-2-2 9>{fsy  
* @version 1.0 `;mgJD  
*/ h-p}Qil,  
public class ImprovedMergeSort implements SortUtil.Sort { J;sQvPHV8  
7-3  
private static final int THRESHOLD = 10; >VhZv75  
rB J`=oz  
/* O%%Q./oh  
* (non-Javadoc) $uLTYu  
* mJ%^`mrI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <*vR_?!  
*/ F`KXG$  
public void sort(int[] data) {  $H*8H`  
int[] temp=new int[data.length]; u ?V}pYX  
mergeSort(data,temp,0,data.length-1); ;X}2S!7Ko  
} 1_7p`Gxt[/  
p,=IL_  
private void mergeSort(int[] data, int[] temp, int l, int r) { kB+$Kt<]L  
int i, j, k; o0WwlmB5  
int mid = (l + r) / 2; ybpOk  
if (l == r) ) [eTZg  
return; _J*l,]}S  
if ((mid - l) >= THRESHOLD) Zx8$M5  
mergeSort(data, temp, l, mid); OX,em Ti  
else %C%3c4+Oh  
insertSort(data, l, mid - l + 1); u.E>d9  
if ((r - mid) > THRESHOLD) H~*N:$C  
mergeSort(data, temp, mid + 1, r); 0Hrvr  
else )]n>.ZmLCB  
insertSort(data, mid + 1, r - mid); g Cp`J(2v:  
kNP-+o  
for (i = l; i <= mid; i++) { Vc0j)3  
temp = data; LYAGpcG  
} <hzHrx'o{  
for (j = 1; j <= r - mid; j++) { Cuylozj$&  
temp[r - j + 1] = data[j + mid]; Dx\~#$S!=  
} f0eQq;D$K  
int a = temp[l]; PE.UNo>o  
int b = temp[r]; tOXyle~C  
for (i = l, j = r, k = l; k <= r; k++) { Ew4D'; &;  
if (a < b) { 1G A.c:  
data[k] = temp[i++]; !bzWgD7j  
a = temp; ZXLAX9|  
} else { 6Takx%U  
data[k] = temp[j--]; F=&,=r' Q8  
b = temp[j]; _)@G,E33f@  
} pZ $>Hh#  
} 0~<?*{~  
} h0-.9ym  
;{8 X+H  
/** TFldYKd/l  
* @param data ~M7X]  
* @param l iwIn3R,  
* @param i 3 85qQppz  
*/ Cw^iA U  
private void insertSort(int[] data, int start, int len) { /.s L[X-G  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UV|{za$&/  
} W +Piqf*  
} 6r^ZMW  
} o>*`wv  
} ,or;8aYc#  
[-`s`g-  
堆排序: (4z_2a(Dl,  
=f@71D1  
package org.rut.util.algorithm.support; 2cu2S"r  
wo62R&ac  
import org.rut.util.algorithm.SortUtil; A99;bf}"  
Zk7!CJVM  
/** Lww&[|k.  
* @author treeroot ,aWI&ve6  
* @since 2006-2-2 %-YWn`yEm  
* @version 1.0 G;u 6p  
*/ 3]iw3M  
public class HeapSort implements SortUtil.Sort{ ZT"vVX- )G  
o^5UHFxTCB  
/* (non-Javadoc) g[y&GCKY!=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ce//; Op  
*/ @@a#DjE%/  
public void sort(int[] data) { Bd*Ok]  
MaxHeap h=new MaxHeap(); ^69(V LK  
h.init(data); G(A7=8vW  
for(int i=0;i h.remove(); Y 8}y0]V  
System.arraycopy(h.queue,1,data,0,data.length); 9k4z__Ke  
} F)=<|,b1  
%X}D(_  
private static class MaxHeap{ x`2dN/wDhf  
5T"h7^}e  
void init(int[] data){ -5os0G80  
this.queue=new int[data.length+1]; Tq^B>{S "  
for(int i=0;i queue[++size]=data; (^T}6t3+4  
fixUp(size); jn]l!nm  
} U e-AF#  
} ui"`c%2n  
1C=42ZZ&2  
private int size=0; ^^V+0 l  
zWN]#W`  
private int[] queue; @<OsTF L  
-0'< 7FSQ  
public int get() { @6[aLF]F  
return queue[1]; aR)UHxvX  
} M~X~2`fFH  
l"&iSq!3=  
public void remove() { e\#aQ1?"  
SortUtil.swap(queue,1,size--); ?(khoL t  
fixDown(1); ;p,Kq5,l  
} F)l1%F Cm  
file://fixdown ~ hP]<$v  
private void fixDown(int k) { <,*w$  
int j; ko{&~   
while ((j = k << 1) <= size) { yqJ>Z%)hf  
if (j < size %26amp;%26amp; queue[j] j++; _4{3^QZq5  
if (queue[k]>queue[j]) file://不用交换 i*xVD`x~  
break; dF|n)+C~R  
SortUtil.swap(queue,j,k); #BEXj<m+J  
k = j; >0:=<RW  
} |+-b#Sa9  
} ?+c-m+;wj  
private void fixUp(int k) { 3nq4Y'  
while (k > 1) { 3"HEXJMc  
int j = k >> 1; # b3 14  
if (queue[j]>queue[k]) C:!&g~{cKi  
break; fX LsLh+~D  
SortUtil.swap(queue,j,k); aTaL|&(  
k = j; }PMlG  
} IQ JFL +f  
} GB*^?Ii  
!bW^G} <t  
} qP/McH?  
Kk% I N9  
} +>tSO!}[  
$?&distJ  
SortUtil: t,~feW,  
Ch=jt*0  
package org.rut.util.algorithm; +nYF9z2  
3cH^ ,F  
import org.rut.util.algorithm.support.BubbleSort; 5uM`4xkj  
import org.rut.util.algorithm.support.HeapSort; vQ5rhRG)E  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0LWV.OIIC  
import org.rut.util.algorithm.support.ImprovedQuickSort; PywUPsJ  
import org.rut.util.algorithm.support.InsertSort; [ 7{cf`C  
import org.rut.util.algorithm.support.MergeSort; ! 4 "$O@U4  
import org.rut.util.algorithm.support.QuickSort; n2opy8J#!  
import org.rut.util.algorithm.support.SelectionSort; tB0f+ wC  
import org.rut.util.algorithm.support.ShellSort; SphP@J<ONW  
w\JTMS$  
/** *Xu?(Jd  
* @author treeroot =`qEwA  
* @since 2006-2-2 rB =c  
* @version 1.0 pW<l9W  
*/ EP{ji"/7[  
public class SortUtil { AB.ZmR9|  
public final static int INSERT = 1; [xDn=)`{V  
public final static int BUBBLE = 2; C61E=$  
public final static int SELECTION = 3; 7%|HtBXv^  
public final static int SHELL = 4; X-yS9E  
public final static int QUICK = 5; fHF*#  
public final static int IMPROVED_QUICK = 6; u~'j?K.^  
public final static int MERGE = 7; O V^?cA  
public final static int IMPROVED_MERGE = 8; JGlp7wro  
public final static int HEAP = 9; . N5$s2t  
SQdK`]4  
public static void sort(int[] data) { [WR*u\FF  
sort(data, IMPROVED_QUICK); V4<f4|IL  
} "6WE6zq   
private static String[] name={ &7w*=f8I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,u5iiR  
}; {>yy3(N  
.UUT@ w?  
private static Sort[] impl=new Sort[]{ _]kw |[)  
new InsertSort(), ?J5E.7o  
new BubbleSort(), T mH5+  
new SelectionSort(), zrA =?[  
new ShellSort(), P9gAt4i  
new QuickSort(), 5BMrn0  
new ImprovedQuickSort(), ;C5 J ^xHI  
new MergeSort(), ](k}B*Ab h  
new ImprovedMergeSort(), kI~; 'M  
new HeapSort() AR)A <  
}; 3Q#3S  
Y-y}gc_L  
public static String toString(int algorithm){ l=>FoJf!*<  
return name[algorithm-1]; Pu2cU5n  
} JIMi~mEiN  
k|rbh.Q  
public static void sort(int[] data, int algorithm) { )tx!BJiZ[  
impl[algorithm-1].sort(data); 5Noy~;  
} %Xl(wvd   
q:P44`Aq  
public static interface Sort { rVb61$  
public void sort(int[] data); }ho6  
} ]L!:/k,=S  
vn.j>;E'  
public static void swap(int[] data, int i, int j) { A{wSO./3  
int temp = data; 5eX+9niY  
data = data[j]; 7;ddzxR4  
data[j] = temp; u/HNXJ7M`9  
} tf{o=X.)  
} <)$JA  
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