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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。 cB,^?djJ3  
插入排序: 8fqabR  
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package org.rut.util.algorithm.support; i6paNHi*  
[<=RsD_q~  
import org.rut.util.algorithm.SortUtil; !EIH"`>!  
/** P"NI> HM  
* @author treeroot +jE)kaV%  
* @since 2006-2-2 %R$)bGT  
* @version 1.0 q.J6'v lj/  
*/ SAnr|<Y/  
public class InsertSort implements SortUtil.Sort{ eY 3:Nl^  
hp)>Nzdx  
/* (non-Javadoc) ^x&x|ckR!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $+PioSq  
*/ 9we];RYK  
public void sort(int[] data) { Gxd/t#;  
int temp; b_Y+XXb<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kvg=7o  
} \];|$FQg  
} ?`TJ0("z"  
} &m5^ YN$b  
L@\t] ~  
} HJr/N)d  
6teu_FS  
冒泡排序: Q3>qT84  
XF: wsC  
package org.rut.util.algorithm.support; EG\L]fmD  
U>t:*SNC*  
import org.rut.util.algorithm.SortUtil; rv[BL.qV  
~"S5KroN  
/** J.rS@Z`~7  
* @author treeroot rX$-K\4W  
* @since 2006-2-2 _A]jiPq  
* @version 1.0 *?Eu{J){7%  
*/ ]yKwH 9sl  
public class BubbleSort implements SortUtil.Sort{ wp:$Tqa$  
f #h0O3  
/* (non-Javadoc) KeyKLkg>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X:Y1g)|K  
*/ `_vPElQXZ#  
public void sort(int[] data) { Vc'p+e|(  
int temp; }|h-=T '  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m:Rx<E E  
if(data[j] SortUtil.swap(data,j,j-1); 7eq.UyUxs  
} RPa]VL1W  
} M}jl \{  
} TJP;!uX  
} 'tTlBf7#  
Db2#QQ  
} +PYR  
p3fV w]N  
选择排序: x75;-q  
3=]/+{B  
package org.rut.util.algorithm.support; <=uO*s>%  
ruqE]Hx9(  
import org.rut.util.algorithm.SortUtil; JK)|a@BtOT  
j 1'H|4  
/** NHZMH!=4:n  
* @author treeroot crd|r."  
* @since 2006-2-2 z*nztvY@e  
* @version 1.0 rREev  
*/ Uj 3{c  
public class SelectionSort implements SortUtil.Sort { F4(;O7j9  
&[\zs&[@y  
/* R(Vd[EGY  
* (non-Javadoc) _6FDuCVD-  
* yq3"VFh3d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?_pd#W=!  
*/ ,S(_YS^m  
public void sort(int[] data) { jM*wm~4>@  
int temp; IAd ^$9  
for (int i = 0; i < data.length; i++) { .*k!Zl*  
int lowIndex = i; MS SHMR  
for (int j = data.length - 1; j > i; j--) { Qvny$sr2  
if (data[j] < data[lowIndex]) { hW,GsJ,  
lowIndex = j; ve#[LBOC8  
} dd=5`Bo9Yh  
} ]Gl_L7u`  
SortUtil.swap(data,i,lowIndex); ^R\5'9K!  
} !4F@ !.GG!  
} Z[+Qf3j}o6  
d{!zJ+n  
} -GgV&%'a  
-'W:P'BG  
Shell排序: P)TeF1~T  
$o\U q  
package org.rut.util.algorithm.support; ^<yM0'0t  
XSZjuQ<[3  
import org.rut.util.algorithm.SortUtil; @Ng q+uXm  
[\HAJA,  
/** nkkGJV!  
* @author treeroot suj}A  
* @since 2006-2-2 GmGq69]J*  
* @version 1.0 n;b 9f|&z  
*/ fZd~},X  
public class ShellSort implements SortUtil.Sort{ :+DAzjwO<  
'U`I  
/* (non-Javadoc) DF#WQ8?$]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h^9Ne/s~  
*/ (K"t</]  
public void sort(int[] data) { Q6Zh%\+h(  
for(int i=data.length/2;i>2;i/=2){ qmnCa&C9  
for(int j=0;j insertSort(data,j,i); RDG,f/L2  
} ZG)C#I1;O  
} ;`bJgSCfo  
insertSort(data,0,1); `~t$k7wm=  
} q33!X!br  
\b88=^  
/** Y@'1}=`J  
* @param data Y@%6*uTLa  
* @param j xcIZ'V  
* @param i nuv$B >  
*/ 28+ Sz>SP  
private void insertSort(int[] data, int start, int inc) { Z@iMG  
int temp; %@M/)"k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fs]Zw mA^  
} h$zPQ""8  
}  K[TMTn  
} -p !KsU  
Tf[-8H<  
} M/sqOhg  
{_MU0=7c\  
快速排序: '*p-`  
cfe[6N  
package org.rut.util.algorithm.support; =Jl1D*B*  
Pq7tNM E  
import org.rut.util.algorithm.SortUtil; +XRv iHA`  
zsRN\U  
/** kk5i{.?[  
* @author treeroot XKU=VOY  
* @since 2006-2-2 lR^dT4  
* @version 1.0 k0D&F;a%  
*/ ! xqG-rd '  
public class QuickSort implements SortUtil.Sort{ kAk,:a;P  
R QO{fC  
/* (non-Javadoc) NtOR/*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mw5!9@Fc7  
*/ E[Io8|QA  
public void sort(int[] data) { k~?}z.g(  
quickSort(data,0,data.length-1); v <Ze$^ e&  
} )J88gMk+  
private void quickSort(int[] data,int i,int j){ 0_y%Qj^e  
int pivotIndex=(i+j)/2; a m zw  
file://swap ;09J;sf  
SortUtil.swap(data,pivotIndex,j); Q}.y"|^  
|)JoxqR  
int k=partition(data,i-1,j,data[j]); _&![s]  
SortUtil.swap(data,k,j); ^9b `;}).  
if((k-i)>1) quickSort(data,i,k-1); L,4 ^Of  
if((j-k)>1) quickSort(data,k+1,j); 7<:w-  
`y6l^ep  
} ez5`B$$  
/** ?H c A&  
* @param data 246lFx G.  
* @param i /+1Fa):  
* @param j `Zi#rr|)L  
* @return o5$K^2^g  
*/ D\l.?<C  
private int partition(int[] data, int l, int r,int pivot) { _0j}(Q>|H#  
do{ S+>]8ZY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x)yf!Dv5$  
SortUtil.swap(data,l,r); |f}NO~CA  
} &lS0"`J=  
while(l SortUtil.swap(data,l,r); tx1jBh:e=  
return l; z|?R=;,u`  
} Po4cbFZ  
O`0$pn  
} x[^A9  
r;T/  
改进后的快速排序: QF;<%QF:  
NU(/Yit  
package org.rut.util.algorithm.support; h{xER IV1u  
;VFr5.*x  
import org.rut.util.algorithm.SortUtil; ,] {NZ9  
EXFxiw  
/** rYS D-Kq  
* @author treeroot *f#4S_ws`  
* @since 2006-2-2 "AK3t' jF*  
* @version 1.0 jr l6):x  
*/ E\*",MGL  
public class ImprovedQuickSort implements SortUtil.Sort { 9cmJD5OO  
+?:V\niQI  
private static int MAX_STACK_SIZE=4096; \ +xIH  
private static int THRESHOLD=10; PC_4#6^5  
/* (non-Javadoc) &"h!SkX/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,< icW &a  
*/ uWInx6p  
public void sort(int[] data) { .nH /=  
int[] stack=new int[MAX_STACK_SIZE]; kZ.3\  
)IhY&?jk?  
int top=-1; GDB>!ukg  
int pivot; U44H/5/  
int pivotIndex,l,r; +=k|(8Js#  
l.W:6", w  
stack[++top]=0; F`Y<(]+   
stack[++top]=data.length-1; KUyJ"q<W  
YcV~S#b  
while(top>0){ h^*{chm]  
int j=stack[top--]; <"+C<[n.  
int i=stack[top--]; RM+E  
KRZV9AJ  
pivotIndex=(i+j)/2; U.F65KaKF  
pivot=data[pivotIndex]; /nP=E  
6;pREM+  
SortUtil.swap(data,pivotIndex,j); v+sbRuo8  
r*wKYb  
file://partition F]*-i 55S  
l=i-1; 7&)F;;H  
r=j; k9xKaJ %1  
do{ 6v#G'M#r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !v L :P2  
SortUtil.swap(data,l,r); `@D4?8_  
} !gf3%!%  
while(l SortUtil.swap(data,l,r); UVJ(iNK"  
SortUtil.swap(data,l,j); VC(|t} L4  
sEN@q   
if((l-i)>THRESHOLD){ 3Q}Y?rkJ5  
stack[++top]=i; *$$V, 6O.  
stack[++top]=l-1; >[@d&28b%  
} pb Ie)nK  
if((j-l)>THRESHOLD){ o?FUVK  
stack[++top]=l+1; ( `+Z'Y  
stack[++top]=j; (d#Z-w-  
} SXz([Z{)  
}aM`Jp-O  
} |]cDz  
file://new InsertSort().sort(data); LeyDs>! 0  
insertSort(data); 8Q -F  
} U9 *2< c  
/** Oha g%<1#  
* @param data #Vigu,zY  
*/ hFfaaB  
private void insertSort(int[] data) { ! VZj!\I  
int temp; >pvg0Fh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >NA7,Z2.  
} NF!1)  
} +:%FJCOT  
} n^02@Aw  
- (}1o9e\7  
} 8Jj0-4]  
5z ^UQ q  
归并排序: a?~csP^?}  
E0]h|/A]  
package org.rut.util.algorithm.support; z44~5J]  
SYPMoE!U:  
import org.rut.util.algorithm.SortUtil; l|em E ^  
\q'fB?bS^  
/** Z;\"pP:  
* @author treeroot 6ya87H'e@  
* @since 2006-2-2 X$iJ|=vW  
* @version 1.0 oD@jtd>b%  
*/ rI+w1';C1  
public class MergeSort implements SortUtil.Sort{ "|*Kf#  
>o#wP  
/* (non-Javadoc) 'a^tL[rLP1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "nno)~)u  
*/ _i@eOqoC  
public void sort(int[] data) { B~z g"  
int[] temp=new int[data.length]; _C,@eu"9V  
mergeSort(data,temp,0,data.length-1); f\U&M,L\ '  
} @[lc0_ b  
oImgj4C2L  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2\B9o `Y  
int mid=(l+r)/2; E0^%|Mh]b  
if(l==r) return ; l )*,18n  
mergeSort(data,temp,l,mid); Wd56B+  
mergeSort(data,temp,mid+1,r); 1 3 `0d  
for(int i=l;i<=r;i++){ yUmsE-W  
temp=data; ]~S+nl yd<  
} tlLn  
int i1=l; )z235}P  
int i2=mid+1; *3`oU\r  
for(int cur=l;cur<=r;cur++){ DE\bYxJ  
if(i1==mid+1) uE#,c\[8  
data[cur]=temp[i2++]; g+ 1=5g  
else if(i2>r) /:{_|P\  
data[cur]=temp[i1++]; ~uR6z//%  
else if(temp[i1] data[cur]=temp[i1++]; <-B"|u  
else ]Bd3d%  
data[cur]=temp[i2++]; |EV\a[  
} !FO^:V<|5  
} s~X*U&}5  
O& %"F8B  
} pNE\@U|4E  
x36#x  
改进后的归并排序: "E)++\JL  
AYA&&b  
package org.rut.util.algorithm.support; (S)E|;f%C  
A :bPIXb  
import org.rut.util.algorithm.SortUtil; EH*ym#Y  
zB6u-4^wT  
/** ~/jxB)t  
* @author treeroot \y H3Y  
* @since 2006-2-2  /E{dM2  
* @version 1.0 -N7L #a  
*/ 3R%UPT0>  
public class ImprovedMergeSort implements SortUtil.Sort { #>m, Cm  
 ;[KriW  
private static final int THRESHOLD = 10; Jhsv2,8 {  
q X%vRf0  
/* yaRcBT?  
* (non-Javadoc) !\#Wk0Ku  
* b?]ly(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yvoo M'R  
*/ ezr\T  
public void sort(int[] data) { 5u|=;Hz*)  
int[] temp=new int[data.length]; 8\)U|/A7  
mergeSort(data,temp,0,data.length-1); 7XVzd]jH  
} ocl47)  
v=*Bb3dt  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?VZ11?u  
int i, j, k; @UpC{M--Wr  
int mid = (l + r) / 2;  H\=LE  
if (l == r) ^s2m\Q(  
return; k~1j/VHv  
if ((mid - l) >= THRESHOLD) oT|P1t.  
mergeSort(data, temp, l, mid); p`ADro*  
else 'z-;*!A}j  
insertSort(data, l, mid - l + 1); L`jB)wF /J  
if ((r - mid) > THRESHOLD) (~ ]g,*+  
mergeSort(data, temp, mid + 1, r); $K?T=a;z  
else )pjjW"C+  
insertSort(data, mid + 1, r - mid); lHcZi  
WXLe,7y  
for (i = l; i <= mid; i++) { {}g %"mi#  
temp = data; Z(Eke  
} \7,MZt  
for (j = 1; j <= r - mid; j++) { A-a17}fta  
temp[r - j + 1] = data[j + mid]; my\o P(e\  
} :T7?  
int a = temp[l]; H ~[LJ5x  
int b = temp[r]; `!nJS|  
for (i = l, j = r, k = l; k <= r; k++) { ,G[r+4|h  
if (a < b) { }{&l n  
data[k] = temp[i++]; Bn~\HW\Lh  
a = temp;  's>#8;X  
} else { DHm[8 Qp  
data[k] = temp[j--]; ~JwpNJs  
b = temp[j]; ShWHHU(QQ  
} Jt2,LL:G  
} /lLov.  
} Vl{~@G,@  
t{R5 EU  
/** c$Xe.:QY  
* @param data "[jhaUAK  
* @param l Qj 6gg  
* @param i cc|CC Zl  
*/ *.m{jgi1X  
private void insertSort(int[] data, int start, int len) { ]{IR&{EI-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lx{.H,1~  
} ,8c dXt   
} =5y`(0 I`U  
} B*?ZE4`  
} 9W1;Kb|Z<  
G;(onJz  
堆排序: y$IaXr5L  
(O8,zqP9l  
package org.rut.util.algorithm.support; L!;^ #g  
y#S1c)vU  
import org.rut.util.algorithm.SortUtil; M!N` Orz  
4 ,p#:!  
/** eM?rc55|  
* @author treeroot L]k*QIn:h  
* @since 2006-2-2 N9i}p^F<_  
* @version 1.0 5%<TF .;-J  
*/ 7$(_j<o`  
public class HeapSort implements SortUtil.Sort{ 'FShNY5  
t|;%DA)fjw  
/* (non-Javadoc) j\2] M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?^LG hdR  
*/ YF}9k  
public void sort(int[] data) { 8#+`9GI  
MaxHeap h=new MaxHeap(); wL'oImE  
h.init(data); $brKl8P  
for(int i=0;i h.remove(); JAc@S20v\  
System.arraycopy(h.queue,1,data,0,data.length); `FUFK/7 w\  
} p{NPcT%&  
^DBD63 N"  
private static class MaxHeap{ L~*u4  
!xkj30O(G  
void init(int[] data){ EVR! @6@  
this.queue=new int[data.length+1]; r2RBrZ@1  
for(int i=0;i queue[++size]=data; n}19?K]g  
fixUp(size); I+0c8T(:  
} 3PfiQ|/b  
} eh$G.-2N  
XjX 2[*l  
private int size=0; +.w[6  
@. "q  
private int[] queue; gf+o1\5t@  
F?7u~b|@{  
public int get() { xb%/sz(4  
return queue[1]; Ay 2b,q  
} +Dv7:x7  
!0`lu_ZN  
public void remove() { vx'l> @]k  
SortUtil.swap(queue,1,size--); {3_Gjb5\\4  
fixDown(1); }A-{6Qe  
} f[x~)=  
file://fixdown M9gOoYf,~  
private void fixDown(int k) { <BSSa`N`  
int j; FIH@2zA  
while ((j = k << 1) <= size) { $nj\\,(g  
if (j < size %26amp;%26amp; queue[j] j++; 9 +}cE**=d  
if (queue[k]>queue[j]) file://不用交换 ri:,q/-  
break; '}_=kp'X  
SortUtil.swap(queue,j,k); _0K.Fk*(!  
k = j; f6Ml[!aU  
} =tq1ogE  
} 6VC-KY  
private void fixUp(int k) { 6_WmCtvF  
while (k > 1) { Z%#^xCz;w>  
int j = k >> 1; |7y6 pz  
if (queue[j]>queue[k]) [~COYjp  
break; +@e }mL\8  
SortUtil.swap(queue,j,k);  012Lwd  
k = j; :i.t)ES  
}  m;c3Z-  
} 6Z Xu,ks}  
x.ba|:5  
} hqL+_| DW  
z?)He)d  
} /N>} 4Ay  
)#a7'Ba  
SortUtil: }B`Ku5 M  
*,17x`1e  
package org.rut.util.algorithm; P7Xg{L&@.  
"v5ElYG  
import org.rut.util.algorithm.support.BubbleSort; e^zHw^js  
import org.rut.util.algorithm.support.HeapSort; opXDm\  
import org.rut.util.algorithm.support.ImprovedMergeSort; "mR*7o$|  
import org.rut.util.algorithm.support.ImprovedQuickSort; +>!V ]S  
import org.rut.util.algorithm.support.InsertSort; S nW7x  
import org.rut.util.algorithm.support.MergeSort; J smB^  
import org.rut.util.algorithm.support.QuickSort; ;`+`#h3-V  
import org.rut.util.algorithm.support.SelectionSort; m^Glc?g<  
import org.rut.util.algorithm.support.ShellSort; Ls1B \Aw_  
_B3zRO  
/** j1A|D   
* @author treeroot !.*iw k`  
* @since 2006-2-2 L!,d"wuD  
* @version 1.0 2 L:$aZ  
*/ NEw $q4  
public class SortUtil { ~cIl$b  
public final static int INSERT = 1; "kU]  
public final static int BUBBLE = 2; a fx'  
public final static int SELECTION = 3; `]jqQr97  
public final static int SHELL = 4; o5SQ1;`   
public final static int QUICK = 5; J1X~vQAe  
public final static int IMPROVED_QUICK = 6; OM)3Y6rK  
public final static int MERGE = 7; P_&p=${  
public final static int IMPROVED_MERGE = 8; nM8[  
public final static int HEAP = 9; *GJ:+U&m[  
f0DK>L  
public static void sort(int[] data) { >g]ON9CGH  
sort(data, IMPROVED_QUICK); <UT>PCNG  
} N'QqJe7Z  
private static String[] name={ 9,scH65x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _w>uI57U  
}; V&%C\ns4  
a.q;_5\5`  
private static Sort[] impl=new Sort[]{ +Ofa#^5);K  
new InsertSort(), <bP#H  
new BubbleSort(), cI:-Z{M7z  
new SelectionSort(),  m*dNrG  
new ShellSort(), H:Y&OZ  
new QuickSort(), [1SMg$@<  
new ImprovedQuickSort(), |cgui  
new MergeSort(), cS(;Qs]Q  
new ImprovedMergeSort(), k"0;D-lTZ>  
new HeapSort() A?A9`w  
}; 8vSIf+  
hF>u)%J/S  
public static String toString(int algorithm){ Juu+vMn1  
return name[algorithm-1];  R%"K  
} id?E)Jy  
OhFW*v  
public static void sort(int[] data, int algorithm) { "(f`U.  
impl[algorithm-1].sort(data); oL-2qtv  
} psUE!~9,  
nZ E)_  
public static interface Sort { +D`*\d1  
public void sort(int[] data); MA* :<l  
} -ihiG_f  
.T8K-<R  
public static void swap(int[] data, int i, int j) { 2+Yb 7 uI,  
int temp = data; e<"/'Ql!k  
data = data[j]; Z9[+'ZWt  
data[j] = temp; ?aWx(dVQ  
} :o8MUXH$  
} '!Wvqs  
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