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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。 C <B<o[:H  
插入排序: 0uvzxmN  
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package org.rut.util.algorithm.support; 7 oQ[FdRn*  
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import org.rut.util.algorithm.SortUtil; ;H'gT+t<c  
/** H8{ol6wc)6  
* @author treeroot Y32 "N[yw  
* @since 2006-2-2 W!T"m)S  
* @version 1.0 By)u-)g9  
*/ h-#1U3d  
public class InsertSort implements SortUtil.Sort{ [?k8}B)mHB  
hK|j6x f.o  
/* (non-Javadoc) lDxc`S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !bnyJA  
*/ r(h`XMsU  
public void sort(int[] data) { Yg9joNBh  
int temp; )h{ ]k=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;30nd=  
} m ci/'b Xt  
} 72W s K"  
} !C4!LZ0A  
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} (kv?33  
V)(R]BK{  
冒泡排序: #OO>rm$  
'cix`l|^  
package org.rut.util.algorithm.support; LJ)5W  
T .FI'wy  
import org.rut.util.algorithm.SortUtil; 7&qy5 y-Ap  
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/** ZyrI R  
* @author treeroot G` XC  
* @since 2006-2-2 -i yyn ^|  
* @version 1.0 aFz5leD  
*/ )G^ KDj"  
public class BubbleSort implements SortUtil.Sort{ VX LT^iX  
i.D3'l  
/* (non-Javadoc) uN([*'0Cg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eIRLNxt+v  
*/ N ,8/Y  
public void sort(int[] data) { }J">}j]/  
int temp; ( +pLA"xq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bp8'pj;~  
if(data[j] SortUtil.swap(data,j,j-1); <Ln1pV~k  
} u/cg|]x&T  
} P9g en6  
} =6"2UC&  
} V-<GT ?  
1N7Kv4,  
} I)A`)5="5  
X.hm s?]  
选择排序: QFYWA1<pDh  
uwz)($~bp  
package org.rut.util.algorithm.support; Vn*tp bz  
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import org.rut.util.algorithm.SortUtil; DxUKUE  
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/** Re P|UH  
* @author treeroot uV!^,,~  
* @since 2006-2-2 tjupJ*Rt  
* @version 1.0 $STaQ28C  
*/ :<}=e@/~|  
public class SelectionSort implements SortUtil.Sort { 5$V_Hj  
zIh ['^3.n  
/* /YZr~|65  
* (non-Javadoc) l c+g&f  
*  ,%uo6%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^J$2?!~  
*/ |&RU/a  
public void sort(int[] data) { q WQ/ 'M  
int temp; 8C*c{(4  
for (int i = 0; i < data.length; i++) { mV3cp rRqv  
int lowIndex = i; Z'"tB/=W  
for (int j = data.length - 1; j > i; j--) { 0u;4%}pD  
if (data[j] < data[lowIndex]) { <StN%2WQ1  
lowIndex = j; z6*X%6,8  
} ,P;Pm68V  
} u6AA4(  
SortUtil.swap(data,i,lowIndex); ~_/(t'9  
} vEJWFoeEFm  
} wne,e's}   
#ZB~ x6i6  
} MF5[lK9e  
 |y(Q  
Shell排序: k?+?v?I =  
)h7<?@wv&  
package org.rut.util.algorithm.support; %5(I/zB  
E7rDa1  
import org.rut.util.algorithm.SortUtil; 8X[:j&@  
? m DI#~)  
/** Ff)8Q.m  
* @author treeroot .+$ Q<L  
* @since 2006-2-2 16 =sij%A  
* @version 1.0 ]n6#VTz*  
*/ Fld=5B^}  
public class ShellSort implements SortUtil.Sort{ _852H$H\  
`sn^ysp  
/* (non-Javadoc) s~^5kgPA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HiZ*+T.B  
*/ uXn1 'K<'2  
public void sort(int[] data) { y [}.yyye  
for(int i=data.length/2;i>2;i/=2){ 8A##\j )  
for(int j=0;j insertSort(data,j,i); l9{hq/V  
} Tp/6,EE  
} i@*{27t  
insertSort(data,0,1); -t!~%_WCv  
} Va"0>KX  
+^60T$  
/** ztcp/1jIvS  
* @param data +r2+X:#~T  
* @param j f6hnTbJ  
* @param i j()7_  
*/ E(>=rD/+  
private void insertSort(int[] data, int start, int inc) { ,Vc6Gwm  
int temp; "L IF.)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y%"{I7!A  
} glO^yZs  
} em%4Ap  
} &6/[B_.  
YvaK0p0Z  
} rBQ_iB_  
R0KPZv-  
快速排序: <sb~ ^B  
Yl Zso2  
package org.rut.util.algorithm.support; - YEZ]:"  
,0 M_ Bk"  
import org.rut.util.algorithm.SortUtil; WlOmJtt4)  
03$mYS_?  
/** G|bT9f$  
* @author treeroot B6MB48#0gs  
* @since 2006-2-2 g];!&R-  
* @version 1.0 W=~~5jFX  
*/ $0W|26;  
public class QuickSort implements SortUtil.Sort{ d[iQ` YW5  
8I=2lK  
/* (non-Javadoc) ` 'DmDg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5%Y3 Kwyy  
*/ pC#E_*49  
public void sort(int[] data) { ; 5*&xz  
quickSort(data,0,data.length-1); .73X3`P25  
} Y`~Ut:fZ  
private void quickSort(int[] data,int i,int j){ zYH&i6nj  
int pivotIndex=(i+j)/2; ?qb}?&1  
file://swap ?tWaI{95I  
SortUtil.swap(data,pivotIndex,j); 9)l$ aBa  
0_jf/an,%  
int k=partition(data,i-1,j,data[j]); U7?;UCmX  
SortUtil.swap(data,k,j); Akq2 d;  
if((k-i)>1) quickSort(data,i,k-1); fW?vdYF  
if((j-k)>1) quickSort(data,k+1,j); &h}#HS>l  
tm|ZBM  
} ./\@Km?  
/** '+@=ILj>  
* @param data $zUP?Gq!  
* @param i D, k6$`  
* @param j ?>VLTp8]  
* @return dn& s*  
*/ !Lu2  
private int partition(int[] data, int l, int r,int pivot) { 5tl< 3g `  
do{ 8=!D$t\3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u^&^UxCA  
SortUtil.swap(data,l,r); ko!)s  
} !Mx$A$Oj>  
while(l SortUtil.swap(data,l,r); [CY9^N  
return l; ,<.V7(|t)  
} &j;wCvE4+  
xw.A #Zb\_  
} W<'m:dq  
Jx:Y-$  
改进后的快速排序: %7hrk  
kj Jn2c:y  
package org.rut.util.algorithm.support; aHD]k8 m z  
9p]QM)M  
import org.rut.util.algorithm.SortUtil; ldf\;Qk  
p#-Z4-`  
/** )705V|v  
* @author treeroot &0d# Y]D4`  
* @since 2006-2-2 _YRFet[,m  
* @version 1.0 (&r. w  
*/ j;zM{qu_  
public class ImprovedQuickSort implements SortUtil.Sort { "MeVE#O  
+L$Xv  
private static int MAX_STACK_SIZE=4096; t5Sy V:fP  
private static int THRESHOLD=10; Zpt\p7WQ  
/* (non-Javadoc) !t"4!3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hW<%R]^|  
*/ XPc^Tq  
public void sort(int[] data) { i$Ul(?  
int[] stack=new int[MAX_STACK_SIZE]; RU|Q ]Ymx  
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int top=-1; 1C+13LE$U  
int pivot; {p2!|A&a  
int pivotIndex,l,r; g _9C*  
FaAC&F@u  
stack[++top]=0; b! t0w{^w  
stack[++top]=data.length-1; hgG9m[?K  
\doUTr R  
while(top>0){ 2k~l$p>CN!  
int j=stack[top--]; E_rI?t^  
int i=stack[top--]; [jQp~&nY  
b=C*W,Q_#  
pivotIndex=(i+j)/2; h'llK6_)  
pivot=data[pivotIndex]; <_L,t 1H{  
gjyYCjF  
SortUtil.swap(data,pivotIndex,j); bIDj[-CDG  
DeVv4D:}@  
file://partition k=$TGqQY?  
l=i-1; ;?Tbnn Wn  
r=j; l\H=m3Bg  
do{ ,&A7iO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8Al{+gx@?  
SortUtil.swap(data,l,r); g{)dP!}  
} B3`5O[ 6  
while(l SortUtil.swap(data,l,r); ?>:g?.+  
SortUtil.swap(data,l,j); Y1\}5k{>  
b~P`qj[  
if((l-i)>THRESHOLD){ eS^7A}*wd-  
stack[++top]=i; 9.M4o[  
stack[++top]=l-1; k9R4Y\8P  
} C[AqFo  
if((j-l)>THRESHOLD){ "S]0  
stack[++top]=l+1; !?jrf] A@  
stack[++top]=j; [85spub&}  
} O/(`S<iip  
.hb:s,0mP  
} net@j#}j-  
file://new InsertSort().sort(data); xIW3={b3  
insertSort(data); ?zMHP#i  
} Q$W  
/** u~:y\/Y6  
* @param data s\(k<Ks  
*/ F,F4nw<W  
private void insertSort(int[] data) { %wg -=;d4  
int temp; 2zA4vZkbcw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W(Fv l  
} tS5hv@9cWx  
} UgSB>V<?  
} NNR`!Pty  
558V_y:  
} 1=c\Rr9]  
x+:UN'"r  
归并排序: \)904W5R  
[b%D3-}'  
package org.rut.util.algorithm.support; A`$%SVgFV^  
I*{ nP)^9  
import org.rut.util.algorithm.SortUtil; %XDc,AR[  
R?|.pq/Ln  
/** TER=*"!  
* @author treeroot Fnv;^}\z  
* @since 2006-2-2 n ATuD  
* @version 1.0 xh,qNnGGi  
*/ 6vo;!V6  
public class MergeSort implements SortUtil.Sort{ %@aSe2B  
E0=)HTtS  
/* (non-Javadoc) ::lKL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P6`u._mX  
*/ jXx<`I+]  
public void sort(int[] data) { 4r#= *  
int[] temp=new int[data.length]; UgN u`$m+  
mergeSort(data,temp,0,data.length-1); x,+{9  
} K(rWNO  
TDKki(o=~  
private void mergeSort(int[] data,int[] temp,int l,int r){ Tbih+# ?  
int mid=(l+r)/2; }O5i/#.lR  
if(l==r) return ; '~<m~UXvD#  
mergeSort(data,temp,l,mid); d#Y^>"|$.  
mergeSort(data,temp,mid+1,r); ;(/ZO%h  
for(int i=l;i<=r;i++){ qp }Cqi  
temp=data; \)N9aV  
} RDi]2  
int i1=l; t;Sb/3  
int i2=mid+1; *uf'zQ<9  
for(int cur=l;cur<=r;cur++){ Ad8n<zt|  
if(i1==mid+1) jDfC=a])  
data[cur]=temp[i2++]; y/{fX(aV  
else if(i2>r)  .-c4wm}  
data[cur]=temp[i1++]; g" DG]/ev  
else if(temp[i1] data[cur]=temp[i1++]; /QWvW=F2<  
else !8d{q)JZ  
data[cur]=temp[i2++]; =,=A,kI[;  
} xb~yM%*c  
} )e+>w=t  
mbxZL<ua  
} '&tG?gb&  
b\kdKVh&  
改进后的归并排序: XbKYiy  
@[<><uTH  
package org.rut.util.algorithm.support; u(>^3PJ+  
R6Km\N  
import org.rut.util.algorithm.SortUtil; Vpz\.]  
kR-SE5`Jk  
/** QUc= &5 %  
* @author treeroot i {NzV  
* @since 2006-2-2 4{U T!WIi  
* @version 1.0 X ::JV7hu  
*/ feDlH[$  
public class ImprovedMergeSort implements SortUtil.Sort { H?vdr:WlTN  
x.!V^HQSN  
private static final int THRESHOLD = 10; P6-s0]-g  
5oW!YJg  
/* qFCOUl  
* (non-Javadoc) |`2RShu  
* ?W?c 1>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qs6]-  
*/ x_N'TjS^{  
public void sort(int[] data) { i(%W_d!  
int[] temp=new int[data.length]; d9f C<Tp  
mergeSort(data,temp,0,data.length-1); WYm\)@  
} r1`x=r   
;;OAQ`  
private void mergeSort(int[] data, int[] temp, int l, int r) { {tuYs:  
int i, j, k; _ @NL;w:!  
int mid = (l + r) / 2; NdA[C|_8}f  
if (l == r) a od-3"7[  
return; r[`9uVT/  
if ((mid - l) >= THRESHOLD) u"cV%(#  
mergeSort(data, temp, l, mid); C\Wmq [  
else Ha0M)0Anv  
insertSort(data, l, mid - l + 1); *SbMqASv4G  
if ((r - mid) > THRESHOLD) ,GbR!j@6  
mergeSort(data, temp, mid + 1, r); ,F8Yn5h  
else ]b:Lo  
insertSort(data, mid + 1, r - mid); Ct<udO  
|PCm01NU!  
for (i = l; i <= mid; i++) { by1<[$8r  
temp = data; z1 | TC  
} ?4#Li~q  
for (j = 1; j <= r - mid; j++) { F3[T.sf  
temp[r - j + 1] = data[j + mid]; rK6l8)o  
} YNyk1cE  
int a = temp[l]; 5,lEx1{_  
int b = temp[r]; ?|\ER#z  
for (i = l, j = r, k = l; k <= r; k++) { T9E+\D  
if (a < b) { r ,8 [O  
data[k] = temp[i++]; bivuqKA  
a = temp; $Ps|HN  
} else { k<nZ+! M  
data[k] = temp[j--]; b;B%q$sntC  
b = temp[j]; YlJ@XpKM  
} Gi|w}j_  
} Fc)@,/R"v  
} R6<X%*&%  
FJ GlP&v<  
/** T[w]o}>cW  
* @param data hn7# L  
* @param l !3c\NbU  
* @param i  L^/5ux  
*/ u OmtyX  
private void insertSort(int[] data, int start, int len) { ) yi E@ X  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /Vx7mF:  
} \"w"$9o6  
} Y!aSs3c  
} *2>&"B09`  
} 8rAg \H3E  
3V+] 9;  
堆排序: rQ{7j!Im  
0I-9nuw,^;  
package org.rut.util.algorithm.support; b"<liGh"n-  
xk9%F?)  
import org.rut.util.algorithm.SortUtil; ^lnK$i  
4B8 oO  
/** U#7#aeI  
* @author treeroot y;m|  
* @since 2006-2-2 '|6]_   
* @version 1.0 ANAVn@ [  
*/ Ljm[?*H#  
public class HeapSort implements SortUtil.Sort{ #ZUI)9My@  
gMi0FO'  
/* (non-Javadoc) `f,/`''R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (U D nsF  
*/ P1. [  
public void sort(int[] data) { @o].He@L<j  
MaxHeap h=new MaxHeap(); o"s)eh  
h.init(data); <)C#_w)-  
for(int i=0;i h.remove(); }?$F}s-  
System.arraycopy(h.queue,1,data,0,data.length); JMCKcZ%N  
} S3C]AhW;  
>>4qJ%bL  
private static class MaxHeap{ @W.S6;GA\  
L8@f-Kk  
void init(int[] data){ lf`{zc r:  
this.queue=new int[data.length+1]; udK%>  
for(int i=0;i queue[++size]=data; i'<[DjMDlm  
fixUp(size); pHGYQ;:L  
} q_:4w$>  
} SBu"3ym  
+uF>2b6'  
private int size=0; TIqtF&@o4  
)EPjAv  
private int[] queue; l K{hVqpt  
.|KyNBn  
public int get() { soB,j3#p'*  
return queue[1]; |w~nVRb  
} b}$+H/V  
fC d&D  
public void remove() { zy?|ODM  
SortUtil.swap(queue,1,size--); V;VHv=9`o  
fixDown(1); f].h^ ~.q  
} )th<,Lo3#  
file://fixdown KJUH(]>F  
private void fixDown(int k) { tPWLg),  
int j; <18(  
while ((j = k << 1) <= size) { ,$L4dF3  
if (j < size %26amp;%26amp; queue[j] j++; ^rR1ZVY  
if (queue[k]>queue[j]) file://不用交换 h]&GLb&<?  
break; :wyno#8`-  
SortUtil.swap(queue,j,k); a#(?P.6  
k = j; IZ-1c1   
} Jl8H|<g~/  
} dh\'<|\K  
private void fixUp(int k) { 8P\G }  
while (k > 1) { m]0;"jeL  
int j = k >> 1; pZ{+c  
if (queue[j]>queue[k]) #powub  
break; yx8z4*]kH  
SortUtil.swap(queue,j,k); ;\dBfP  
k = j;  :A_@,Q  
} ./Zk`-OBT  
} l~q\3UKlt  
T@B/xAq5!  
} ,.8KN<A2]'  
H [\o RId  
} oUlY?x1  
3AtGy'NTp  
SortUtil: N7zft  
YQvD|x  
package org.rut.util.algorithm; 3,3N^nSD  
',@3>T**  
import org.rut.util.algorithm.support.BubbleSort; 1W LXM^ 4  
import org.rut.util.algorithm.support.HeapSort; ifQ*,+@fxR  
import org.rut.util.algorithm.support.ImprovedMergeSort; *I.f1lz%*  
import org.rut.util.algorithm.support.ImprovedQuickSort; s WvBv  
import org.rut.util.algorithm.support.InsertSort; s?}e^/"v  
import org.rut.util.algorithm.support.MergeSort; dt]-,Y  
import org.rut.util.algorithm.support.QuickSort; `5.'_3  
import org.rut.util.algorithm.support.SelectionSort; Z]Cq3~l  
import org.rut.util.algorithm.support.ShellSort; {$ JYw{a  
3z?> j]  
/** u'DRN,h+  
* @author treeroot g-bK|6?yz  
* @since 2006-2-2 lvz7#f L~  
* @version 1.0 DV-d(@`K  
*/ i$G@R %  
public class SortUtil { E6ElNgL  
public final static int INSERT = 1; LckK\`mh  
public final static int BUBBLE = 2; =s2*H8]  
public final static int SELECTION = 3; Qn.om=KDs@  
public final static int SHELL = 4; ~Ea} /Au  
public final static int QUICK = 5; ?P`K7  
public final static int IMPROVED_QUICK = 6; 0&|\N ? 8_  
public final static int MERGE = 7; g |yvF-+  
public final static int IMPROVED_MERGE = 8; vJ[^  K  
public final static int HEAP = 9; '9J/T57]e  
)23H1  
public static void sort(int[] data) { }rw8PZ9  
sort(data, IMPROVED_QUICK); x2\qXN/R  
} kfY}S  
private static String[] name={ K`zdc`/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |N7M^  
}; zE9W8:7  
xj;H&swo  
private static Sort[] impl=new Sort[]{ Vaw+.sG`AP  
new InsertSort(), *H2r@)Y[~  
new BubbleSort(), 6}Ci>_i4#  
new SelectionSort(), bJ {'<J  
new ShellSort(), `0gyr(fES  
new QuickSort(), L48_96  
new ImprovedQuickSort(), rcG"o\g@+  
new MergeSort(), ,Ah;A[%?~  
new ImprovedMergeSort(), #gs`#6 ,'  
new HeapSort() kv{za4,&  
}; eJX9_6m-  
>jLY"  
public static String toString(int algorithm){ {ROVvs`  
return name[algorithm-1]; `kXs;T6&  
} +lcbi  
Q\7h`d%)  
public static void sort(int[] data, int algorithm) { Ka V8[|Gn,  
impl[algorithm-1].sort(data); A]oV"`f  
} p6Gy ,C.  
pO3SUOP  
public static interface Sort { E4/Dr}4  
public void sort(int[] data); v^*K:#<Q!  
} qqY"*uJ'  
U$A]8NZ$S  
public static void swap(int[] data, int i, int j) { 0IBSRFt$g&  
int temp = data; d^ 8ZeC#  
data = data[j]; P}^W)@+3k  
data[j] = temp; \X D6 pr@  
} E*K;H8}s  
} dkTX  
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