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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。 Qjh5m5e  
插入排序: A!&p,KfT5+  
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package org.rut.util.algorithm.support; #\1;d8h  
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import org.rut.util.algorithm.SortUtil; V*SKWP  
/** aH'Sz'|E  
* @author treeroot l'T3RC,\  
* @since 2006-2-2 Fy8KZWim  
* @version 1.0 lN*O</L,"  
*/ =@;uDu:Q  
public class InsertSort implements SortUtil.Sort{ P4"_qxAW  
x3O$eKy\|5  
/* (non-Javadoc) XHcT7}]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D Cx3_  
*/ fdGls`H  
public void sort(int[] data) { K.G}*uy  
int temp; #p}I 84Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3{ i'8  
} |,L_d2lb  
} w+ gA3Dg  
} A~&Tp  
SU9qF73Y  
} ^yg`U(  
\Fj$^I>C  
冒泡排序: Alaq![7MDP  
`|e?91@vEa  
package org.rut.util.algorithm.support; ST1PSuC~  
'0D2e  
import org.rut.util.algorithm.SortUtil; LL@VR#n"V  
cx M=#Go  
/** =z^v)=uhp  
* @author treeroot rr>*_67-:  
* @since 2006-2-2 !mH2IjcL  
* @version 1.0 _3-nw  
*/ T :IKyb  
public class BubbleSort implements SortUtil.Sort{ _P.+[RS@  
W*i PseXq  
/* (non-Javadoc) 1\t}pGSOeh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !7t,(Id8  
*/ vQ"EI1=7Z  
public void sort(int[] data) { _svY.p s*  
int temp; )B.NV<m  
for(int i=0;i for(int j=data.length-1;j>i;j--){ CS2AKa@`  
if(data[j] SortUtil.swap(data,j,j-1); [3h~y7  
} 0<75G6wd  
} .dwb@$  
} syhTOhOX  
} `G> 6  
p>7 !"RF:U  
} JnE\E(ez  
.w2X24Mmb  
选择排序: #!0le:_  
VXlTA>a }  
package org.rut.util.algorithm.support; X'4e)E3*O  
OJe#s;oH  
import org.rut.util.algorithm.SortUtil; rCqcl  
(cJb/|?3  
/** }8J77[>/  
* @author treeroot s,> 1n0a  
* @since 2006-2-2 &niROM,;K  
* @version 1.0 3D70`u  
*/ JVE]Qb_  
public class SelectionSort implements SortUtil.Sort { ;hU56lfZ)X  
,!U 5;  
/* a.QF`J4"'  
* (non-Javadoc) W zYy<  
* e 5U<nf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z 3)pvX5  
*/ C^I  h"S  
public void sort(int[] data) { nsk`nck  
int temp; {tn%HK">  
for (int i = 0; i < data.length; i++) { C*Avu  
int lowIndex = i; m@  b~  
for (int j = data.length - 1; j > i; j--) { `r;e\Cp  
if (data[j] < data[lowIndex]) { $$8xdv#  
lowIndex = j; qYZ\< h^  
} K~8;wDN`b  
} =+`I%>wc  
SortUtil.swap(data,i,lowIndex); )>08{7  
} ;B>2oq  
} e!wBNcG2  
\Ku6 gEy  
} j.OPDe{LU  
"pTyQT9P  
Shell排序: mle"!*  
C(7uvQ  
package org.rut.util.algorithm.support; r2H_)Oi  
*X_CtjgF  
import org.rut.util.algorithm.SortUtil; 6-C9[[g<  
;(M`Wy]2  
/** QHnk@ R!  
* @author treeroot Av[L,4A  
* @since 2006-2-2 GW a_^  
* @version 1.0 =B O} hk  
*/ &z;F'>"  
public class ShellSort implements SortUtil.Sort{ is_`UDaB  
Z=`\U?,  
/* (non-Javadoc) 1!<k-vt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TIlBT{A<  
*/ 2)(P;[m^o  
public void sort(int[] data) { vG9A'R'P  
for(int i=data.length/2;i>2;i/=2){ hp?hb-4l  
for(int j=0;j insertSort(data,j,i); X?5M)MP+I  
} !Tuc#yFw  
} H(bR@Qok  
insertSort(data,0,1); b,U"N-6  
} t3%[C;@wB  
& yFS  
/** sCG[gshq  
* @param data B[k {u#Kp  
* @param j $oKT-G  
* @param i 2uw1R;zw  
*/ r}ZL{uWMW  
private void insertSort(int[] data, int start, int inc) { 3B|?{U~  
int temp; 63R?=u@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t.'|[pOV  
} g_8Bhe"ik  
} $S{B{FK  
} K^0cL%dB  
B;f\H,/59  
} hkOhY3K5  
>D20f<w(H  
快速排序: &qfnCM0Y  
r9[{0y!4  
package org.rut.util.algorithm.support; 5&V0(LT]C  
.Y!] {c  
import org.rut.util.algorithm.SortUtil; 78'HE(*  
3|1ug92  
/** iDp'M`(6h  
* @author treeroot d8l T+MS=  
* @since 2006-2-2 9X<o8^V  
* @version 1.0 $Pw@EC]  
*/ 09FHE/L  
public class QuickSort implements SortUtil.Sort{ 'n1-?T)  
f0UB? |  
/* (non-Javadoc) vU5a`0mH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0K/?8[#  
*/ !*Hgl\t6a  
public void sort(int[] data) { QoagyL  
quickSort(data,0,data.length-1); ?LE\pk R  
} )3h%2C1uM  
private void quickSort(int[] data,int i,int j){ IK#W80y  
int pivotIndex=(i+j)/2; Z4+S4cqnh  
file://swap 5}J|YKyP  
SortUtil.swap(data,pivotIndex,j); >,JLYz|</  
=3KK/[2M  
int k=partition(data,i-1,j,data[j]); u~kfz*hz  
SortUtil.swap(data,k,j); \^=Wp'5R  
if((k-i)>1) quickSort(data,i,k-1); x\/N09  
if((j-k)>1) quickSort(data,k+1,j); 6 <&jY  
y*i_Ec\h  
} k 4|*t}o7  
/** k [6%+  
* @param data !nX}\lw  
* @param i s{I Xth6  
* @param j ldEZ_g^  
* @return +C`h*%BW  
*/ 6]`XW 0{C  
private int partition(int[] data, int l, int r,int pivot) { g.3 . C?  
do{ EbTjBq  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aI8k:FK"  
SortUtil.swap(data,l,r); Z' cQ< f  
} wD(1Sr5n  
while(l SortUtil.swap(data,l,r); Ml)0z&jQX  
return l; rLt`=bl&&U  
} -Fi{[%&u  
pVuJ4+`  
} TRB)cJZ?  
/$]#L%   
改进后的快速排序: Ww(($e!  
:wlX`YW+e  
package org.rut.util.algorithm.support; Y\CR*om!W  
=_(i#}"A  
import org.rut.util.algorithm.SortUtil; )HLe8:PG~  
N*d )<8_  
/** !rmXeN]-r  
* @author treeroot o: \&4z&=  
* @since 2006-2-2 jlhyn0  
* @version 1.0 -N'xQ(#n3q  
*/ \tL 9`RKpg  
public class ImprovedQuickSort implements SortUtil.Sort { cQ:Y@f 9  
+kh#Jq.  
private static int MAX_STACK_SIZE=4096; HiTn5XNf  
private static int THRESHOLD=10; #;4afj:2g  
/* (non-Javadoc) ;4E.Yr*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |~QHCg<  
*/ ql Z()  
public void sort(int[] data) { f-Yp`lnn.d  
int[] stack=new int[MAX_STACK_SIZE]; gEWKM(5B}  
.=y-T=}  
int top=-1; S4n ~wo  
int pivot; ~g&FeMo  
int pivotIndex,l,r; {Q/XV=  
eRI'pi[#.  
stack[++top]=0;  bnll-G|  
stack[++top]=data.length-1; B.zRDB}i=  
d%IM`S;fh  
while(top>0){ mkJC *45  
int j=stack[top--]; B,`B!rU  
int i=stack[top--]; B/P E{ /  
P!;%DI!<b  
pivotIndex=(i+j)/2; %Se@8d8  
pivot=data[pivotIndex]; 3*N-@;[>b  
"rV-D1Dki  
SortUtil.swap(data,pivotIndex,j); 2(_+PQ6C=  
XYBvM]  
file://partition n|G x29 E  
l=i-1; fc}G6P;3{  
r=j; |AY`OVgcKD  
do{ 6EHYIN^D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M MyVm"w  
SortUtil.swap(data,l,r); } Mh@%2$  
} K^H{B& b8  
while(l SortUtil.swap(data,l,r); (A\X+S(  
SortUtil.swap(data,l,j); ;0)|c}n+.5  
a4zq`n|3U  
if((l-i)>THRESHOLD){ dNQR<v\IL  
stack[++top]=i; 9qhX\, h  
stack[++top]=l-1; <W,M?r+  
} $L~?!u&N  
if((j-l)>THRESHOLD){ z_)`='&n  
stack[++top]=l+1; IK:F~I  
stack[++top]=j; HnDz4eD  
} {km~,]N  
pS1f y]  
} .@#GNZe  
file://new InsertSort().sort(data); Ro&s\T+d  
insertSort(data); B%~hVpm,eM  
} 5PaOa8=2f  
/** h .A@o#x  
* @param data pN-l82]'  
*/ C'6 yt  
private void insertSort(int[] data) { }8H_^G8  
int temp; })I_@\q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'p%\fb6`  
} xq U@87[_  
}  3M5+!H  
} #84<aM  
;WF3w  
} )oEHE7y  
lT`y=qR|  
归并排序: -?m"+mUP  
Gxtqzr*  
package org.rut.util.algorithm.support; -tQi~Y[]  
+#|| w9p  
import org.rut.util.algorithm.SortUtil; jH 4,-  
 b7]MpL  
/** |)"`v'8>  
* @author treeroot $#b@b[h<w  
* @since 2006-2-2 K,ccM[hu|  
* @version 1.0 =jz*|e|V  
*/ -E*VF{IG1  
public class MergeSort implements SortUtil.Sort{ ]c67zyX=%  
{S+  $C  
/* (non-Javadoc) *,hg+?lZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s)gUvS\  
*/ Bl\/q83(  
public void sort(int[] data) { \yQs[l%J  
int[] temp=new int[data.length]; K2'Il[  
mergeSort(data,temp,0,data.length-1); s{"}!y=]  
} 91|0{1  
S:.Vt&+NJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,Pq@{i#  
int mid=(l+r)/2; NCid`a$  
if(l==r) return ; OoG Nij  
mergeSort(data,temp,l,mid); y4j J&  
mergeSort(data,temp,mid+1,r); /o$C=fDF  
for(int i=l;i<=r;i++){ Kd<c'!  
temp=data; 4#dS.UfI  
} z0yPBt1W  
int i1=l; D-v}@tS'  
int i2=mid+1; l r16*2.  
for(int cur=l;cur<=r;cur++){ +2qCH^80  
if(i1==mid+1) T5:p^;?g  
data[cur]=temp[i2++]; ^ UB*Q  
else if(i2>r) :1O49g3R  
data[cur]=temp[i1++]; KOYU'hw  
else if(temp[i1] data[cur]=temp[i1++]; lhp.zl  
else ;J]Lzh  
data[cur]=temp[i2++]; +*'^T)sj/  
} vVA)x~^  
}  qHU=X"rn  
\$Jz26 -n  
} :u ruC  
Cyn_UE  
改进后的归并排序: ['`Vg=O.{  
Q5kf-~Jx+  
package org.rut.util.algorithm.support; AA&5wDMV>  
<w9<G  
import org.rut.util.algorithm.SortUtil; BEfP#h=hr  
Xb/W[rcs  
/** l-~ o&n  
* @author treeroot OYbgt4  
* @since 2006-2-2 ZcP/rT3{^  
* @version 1.0 UP+4xG  
*/ ,; 81FK  
public class ImprovedMergeSort implements SortUtil.Sort { W%&[gDp  
bb@3%r|_<  
private static final int THRESHOLD = 10; aR c2#:~;  
t>Ot)d  
/* f@)GiLC'"  
* (non-Javadoc) 3-%F)@n  
* }O7!>T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <$:Hf@tpMo  
*/ -9X#+-  
public void sort(int[] data) { v}>5!*  
int[] temp=new int[data.length]; axpn*(yE  
mergeSort(data,temp,0,data.length-1); Z1&<-T_  
} u3VSS4RG%  
GcHy`bQbiX  
private void mergeSort(int[] data, int[] temp, int l, int r) { Gc1!')g!  
int i, j, k; +{7/+Zz  
int mid = (l + r) / 2; DV6B_A{kI  
if (l == r) 7)FI_uW  
return; 1>"Yw|F-|3  
if ((mid - l) >= THRESHOLD) &% infPI'  
mergeSort(data, temp, l, mid); ?T (@<T  
else B=,j$uH  
insertSort(data, l, mid - l + 1); $I$ B8  
if ((r - mid) > THRESHOLD) '|jN!y^ 2p  
mergeSort(data, temp, mid + 1, r); :'+- %xUM  
else o4l=oY:'  
insertSort(data, mid + 1, r - mid); aR@s. ll  
]?/7iM  
for (i = l; i <= mid; i++) { =]Vrl-a`^  
temp = data; '(.vB~m7*+  
} 'xn3g;5  
for (j = 1; j <= r - mid; j++) { ` yXJaTbo  
temp[r - j + 1] = data[j + mid]; vf&Sk`  
} VW%eB  
int a = temp[l]; RY\[[eG  
int b = temp[r]; tAxS1<T4  
for (i = l, j = r, k = l; k <= r; k++) { Gd:fh5u':  
if (a < b) { C3#mmiL-  
data[k] = temp[i++]; 1#OM~v6B  
a = temp; ?_<14%r;  
} else { jeLC)lQ*  
data[k] = temp[j--]; +j">Ju6Q;.  
b = temp[j]; 9D+B~8[SQ  
} Scfk] DT  
} TQjM3Ri=V  
} 8h=Rfa9  
6.>l  
/** 5Y}=,v*h}  
* @param data ] 1:pnd  
* @param l r'/H3  
* @param i HT@/0MF{J  
*/ NR@n%p  
private void insertSort(int[] data, int start, int len) { Y{v\m(D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l A1l  
} *(pmFEc  
} 7z@Jw  
} x[w!buV0\  
} 6%8,OOS  
/#]4lFk:h  
堆排序: no`>r}C  
x 8v2mnk  
package org.rut.util.algorithm.support; 3ug-cq  
Fb:Z.  
import org.rut.util.algorithm.SortUtil; U$+G9  
D) my@W0,  
/** UrhSX!g/A>  
* @author treeroot $RJpn]d j  
* @since 2006-2-2 ]!=,8dY  
* @version 1.0 8G6[\P3fQ  
*/  E qc,/  
public class HeapSort implements SortUtil.Sort{ <dAD-2O+  
nYF;.k  
/* (non-Javadoc) q=+AN</  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x+V@f~2F  
*/ A['0~tOP  
public void sort(int[] data) { }1)tALA  
MaxHeap h=new MaxHeap(); sE Rm+x<  
h.init(data); q%H#04Yh  
for(int i=0;i h.remove(); }wkZ\q[  
System.arraycopy(h.queue,1,data,0,data.length); LaolAqU  
} <Jwx|  
OU /=wpt  
private static class MaxHeap{ @9X+ BdQU  
@|hn@!YK  
void init(int[] data){ x_K8Gr#Z0  
this.queue=new int[data.length+1]; 6 $k"B/k  
for(int i=0;i queue[++size]=data; +l8`oQuG  
fixUp(size); K:3u/C`  
} K>a+-QWK3  
} ?-HLP%C('  
F#S )))#  
private int size=0; Munal=wL  
F=qG +T  
private int[] queue; j4fv-{=$  
^zs]cFN#%  
public int get() { 6bXP{,}Gp  
return queue[1]; btV Tt5  
} ]?$e Bbt  
dhAkD-Lh  
public void remove() { [Jjb<6[o  
SortUtil.swap(queue,1,size--); h jCkj(b  
fixDown(1); [IgB78_$  
} 'q:t48&  
file://fixdown QwaAGUA  
private void fixDown(int k) { w.2[Xx~  
int j; *;noZ9{"+  
while ((j = k << 1) <= size) {  erW[q  
if (j < size %26amp;%26amp; queue[j] j++; A/%+AH(  
if (queue[k]>queue[j]) file://不用交换 A3Lfh6O  
break; d77->FX2  
SortUtil.swap(queue,j,k); jwe^(U  
k = j; JO^E x1c  
} NGYUZ\m  
} 2 u{"R  
private void fixUp(int k) { H}[kit*9  
while (k > 1) { f L}3I(VK  
int j = k >> 1; 1;Dug  
if (queue[j]>queue[k]) Y4 <  
break; I5$@1+B  
SortUtil.swap(queue,j,k); S=R}#  
k = j; 7Y?=ijXXx\  
} ~ }g"Fe  
} l1utk8'-  
ha%3%O8Z  
} Gd]!D~[1  
Y9K$6lz  
} u0M? l  
=mq02C~y  
SortUtil: dg?[gD8!4&  
Xaca=tsO  
package org.rut.util.algorithm; D@]*{WO  
^-24S#KE  
import org.rut.util.algorithm.support.BubbleSort; 8!T6N2O6d  
import org.rut.util.algorithm.support.HeapSort; $<~o,e-4  
import org.rut.util.algorithm.support.ImprovedMergeSort; .8O.  
import org.rut.util.algorithm.support.ImprovedQuickSort; uzA_Zjx  
import org.rut.util.algorithm.support.InsertSort; #RG/B2  
import org.rut.util.algorithm.support.MergeSort; >C1**GQ  
import org.rut.util.algorithm.support.QuickSort; k$u/6lw]IB  
import org.rut.util.algorithm.support.SelectionSort; %nmD>QCe  
import org.rut.util.algorithm.support.ShellSort; ZMI!Sl  
*&m{)cTs  
/** )<vU F]e~  
* @author treeroot [ ; $(;  
* @since 2006-2-2 ^zv,VD  
* @version 1.0 OjUZ-_J  
*/ UZ`GS$D@  
public class SortUtil { C_RxJWka  
public final static int INSERT = 1; ^F*G  
public final static int BUBBLE = 2; n&51_.@Q  
public final static int SELECTION = 3; 2GHmA_7P  
public final static int SHELL = 4; !5/jDvh  
public final static int QUICK = 5; _I&];WM\  
public final static int IMPROVED_QUICK = 6; =Z($n: m=*  
public final static int MERGE = 7; 4]VoIUIuN  
public final static int IMPROVED_MERGE = 8; &6yh4-(7  
public final static int HEAP = 9; <ah!!  
RO]Vn]qb  
public static void sort(int[] data) { ?0{8fGM4  
sort(data, IMPROVED_QUICK); Q}A*{9#|  
} bm &$wf  
private static String[] name={ ncGg@$E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?_!} lg  
}; " wB~*,Ny  
>A+0"5+_p  
private static Sort[] impl=new Sort[]{ D]{#!w(d  
new InsertSort(), zJ*|tw4  
new BubbleSort(), w=UFj  
new SelectionSort(), 4FWb5b!A=  
new ShellSort(), ^ RS?y8  
new QuickSort(), OF4iGFw  
new ImprovedQuickSort(), ?D6?W6@  
new MergeSort(), '`/Qr~]  
new ImprovedMergeSort(), (sXR@Ce$  
new HeapSort() (4hCT*  
}; !c;Z<@  
@Qlh  
public static String toString(int algorithm){ dK5|tWJX  
return name[algorithm-1]; O,&nCxB]  
} * mzJ)4A  
AB!P(  
public static void sort(int[] data, int algorithm) { [SFX;v!9  
impl[algorithm-1].sort(data); DRo?7 _  
} cVx#dDdA  
Y [hTO.LF  
public static interface Sort { Y5 BWg  
public void sort(int[] data); CSUXa8u7  
} (iwZs:k-  
'Mfn:n+  
public static void swap(int[] data, int i, int j) { yX%Xjo__*t  
int temp = data; qqmhh_[T  
data = data[j]; n#{z"G  
data[j] = temp; rv75R}.6R^  
} k u@sQn  
} %Km^_JM  
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