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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。 N|$9v{ j_  
插入排序: &>C+5`bg  
@, GL&$Y:W  
package org.rut.util.algorithm.support; \Q(a`6U  
Lv]%P.=[G  
import org.rut.util.algorithm.SortUtil; "A"YgD#t  
/** Qy0w'L/@  
* @author treeroot bf0,3~G,P  
* @since 2006-2-2 o+&Om~W  
* @version 1.0 T>'O[=UWh  
*/ ,wes*  
public class InsertSort implements SortUtil.Sort{ #55:qc>m  
4qp|g'uXT  
/* (non-Javadoc) G(.G>8pf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n 5R9<A^  
*/  Q&xH  
public void sort(int[] data) { WM?-BIlT=  
int temp; W/bW=.d Jd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); - [h[  
} #i@f%Bq-  
} X':FFD4h  
} Ajm!;LA[jO  
} LS8q  
} 4h@,hY1#  
}n4 T!N  
冒泡排序: lbda/Zx  
UjQz   
package org.rut.util.algorithm.support; _\X ,a5Un  
sdZ$3oE.  
import org.rut.util.algorithm.SortUtil; BP@tI|  
P?/JyiO }  
/** JkWhYP}  
* @author treeroot ?&#LmeZ}K  
* @since 2006-2-2 Bh2l3J4X  
* @version 1.0 <[)-Q~Gg5  
*/ W&Fm ;m@M  
public class BubbleSort implements SortUtil.Sort{ 9GH5  
> v%.q]E6n  
/* (non-Javadoc) &>,]YrU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d<7b<f"~  
*/ yy8-t2V  
public void sort(int[] data) { P.XT1)qo*  
int temp; T,/rC{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'wk,t^)  
if(data[j] SortUtil.swap(data,j,j-1); ?'6@m86d  
} I?}jf?!oM  
} IU"  
} MGm*({%  
} )1 T2u  
]}! @'+=  
} p?y2j  
o13jd NQ-  
选择排序: ")No t$8  
+Pb:<WT}%  
package org.rut.util.algorithm.support;  /RJ  
yO1 7C  
import org.rut.util.algorithm.SortUtil; g,._3.D  
YUEyGhkMV{  
/** 6/S. sj~  
* @author treeroot y|ZL< L  
* @since 2006-2-2 #j~FlY5  
* @version 1.0 Fn@`Bi?#q  
*/ NS z }  
public class SelectionSort implements SortUtil.Sort { oL@-<;zKO  
T<pG$4_  
/* w-pgtO|Us  
* (non-Javadoc) \t7yH]:>@  
* !6'N-b1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dhn7N8(LF!  
*/ 4-.K<-T%D  
public void sort(int[] data) { b!@PS$BTxq  
int temp; ^7spXfSAd  
for (int i = 0; i < data.length; i++) { HXa[0VOx  
int lowIndex = i; 7x6 M]1F  
for (int j = data.length - 1; j > i; j--) { adP  :{j  
if (data[j] < data[lowIndex]) { (0NffM1  
lowIndex = j; mp8GHV  
} 88osWo6rG  
} 60!%^O =  
SortUtil.swap(data,i,lowIndex); _eiqs  
} i7.8H*z'  
} (NvjX})eh  
T"z<D+ pN  
} Jr !BDg  
tdH[e0x B  
Shell排序: }CBQdH&g;  
?z9!=A%<V~  
package org.rut.util.algorithm.support; Pz2 b  
"V>}-G&  
import org.rut.util.algorithm.SortUtil; %i9 e<.Ot  
|MZ1j(_  
/** T ?[28|  
* @author treeroot QgqJ #  
* @since 2006-2-2 fwz:k]vk  
* @version 1.0 H:c5 q0O^x  
*/ 9i5?J]o^  
public class ShellSort implements SortUtil.Sort{ UUV5uDe>i  
F<I*?${[  
/* (non-Javadoc) ;98&5X\u<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [nO3%7t@  
*/ $K^l=X  
public void sort(int[] data) { L?[m$l!T}  
for(int i=data.length/2;i>2;i/=2){ o%?)};o  
for(int j=0;j insertSort(data,j,i); w[-)c6JyE  
} ^y/Es2A#t  
} * hs&^G  
insertSort(data,0,1); DU%E883  
} 5I2,za&e  
src9EeiV  
/** blgA`)GI  
* @param data 27D*FItc  
* @param j g3$'G hf  
* @param i = J;I5:J  
*/ x 7by|G(  
private void insertSort(int[] data, int start, int inc) { z{L'7  
int temp; MV"n{1B  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d%8n   
} d-~V.  
} srv4kodj  
} 44ty,M3  
_X4Y1zh  
} S $p>sItO  
1jg* DQ7L  
快速排序: 4,sE{%vb  
cz9J&Le>  
package org.rut.util.algorithm.support; Km(i}:6"  
ST?{H SCz  
import org.rut.util.algorithm.SortUtil; |!PL"]?  
A2 + %  
/** l}uZxKuYx  
* @author treeroot oK\zyNK  
* @since 2006-2-2 hU$o^ICH  
* @version 1.0 H d|p@$I  
*/ a yoC]rE  
public class QuickSort implements SortUtil.Sort{ R2Tt6  
^!\1q<@n  
/* (non-Javadoc) #"UO`2~`l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wG,"X'1  
*/ H@uu;:l<7A  
public void sort(int[] data) { x2B8G;6u  
quickSort(data,0,data.length-1); `}?;Ow&2CY  
} WA (x]""  
private void quickSort(int[] data,int i,int j){ 0 %~~IT}U  
int pivotIndex=(i+j)/2; jB?SX  
file://swap w.x&3aG  
SortUtil.swap(data,pivotIndex,j); n2mO-ZXud  
H4y9\ -  
int k=partition(data,i-1,j,data[j]); ^N/d`IAjv  
SortUtil.swap(data,k,j); (fF8)4l  
if((k-i)>1) quickSort(data,i,k-1); wo0j/4o  
if((j-k)>1) quickSort(data,k+1,j); O^MI073Q>t  
6MVu"0#  
} vS8& ,wJ!  
/** 7%  D4  
* @param data f5V-;  
* @param i v])ew|  
* @param j OE@[a  
* @return "UTW(~D'  
*/ Xq;|l?,O  
private int partition(int[] data, int l, int r,int pivot) { \|0z:R;X  
do{ y u'-'{%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4 Im>2 )  
SortUtil.swap(data,l,r); R&Lqaek&W  
} T aS1%(  
while(l SortUtil.swap(data,l,r); QJ XP -  
return l; <<0sv9qw1  
} \\k=N(n  
+Hu\b&g  
} ,\6Vb*G|E>  
712nD ?>  
改进后的快速排序: P2'N4?2  
(mIjG)4t  
package org.rut.util.algorithm.support; R/oi6EKv  
j0e,>X8  
import org.rut.util.algorithm.SortUtil; kkjugm{D7  
E2dM0r<]  
/** Z^|N]Ej  
* @author treeroot ~X3g_<b_8  
* @since 2006-2-2 F}}!e.>c  
* @version 1.0 $2a"Ec!7  
*/ tDRR3=9pX  
public class ImprovedQuickSort implements SortUtil.Sort { 2Xe1qzvo  
BH0m[9nU;  
private static int MAX_STACK_SIZE=4096; 76tn`4NIP  
private static int THRESHOLD=10; I0+6p8,  
/* (non-Javadoc) H{Ewj_L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X)KCk2Ax  
*/ /JS_gr@DK  
public void sort(int[] data) { S9Sgd&a9  
int[] stack=new int[MAX_STACK_SIZE]; P P J^;s  
p^8a<e?f~f  
int top=-1; xxur4@p!  
int pivot; xh2r?K@k>  
int pivotIndex,l,r; y > =Y  
uN)c!='I  
stack[++top]=0; o-rX4=T  
stack[++top]=data.length-1; bG]0|  
1d< b\P0  
while(top>0){ % 6 *c40  
int j=stack[top--]; Z<;W*6J  
int i=stack[top--]; >`AK'K8{M  
~2Wus8X-  
pivotIndex=(i+j)/2; #Nh'1@@  
pivot=data[pivotIndex]; -Rpra0o. C  
<[[yV  
SortUtil.swap(data,pivotIndex,j); m#'eDO:  
UQu6JkbLL  
file://partition :(A&8<}-6  
l=i-1; MKfK9>a  
r=j; pT|s#-}  
do{ G=zNZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OInl?_,,T#  
SortUtil.swap(data,l,r); (p5q MP]L  
} b&P)J|Fe  
while(l SortUtil.swap(data,l,r);  JQQ[jl;  
SortUtil.swap(data,l,j); *\XOQWrF  
I;w!  
if((l-i)>THRESHOLD){ V[(fE=cIN~  
stack[++top]=i; 'W(u.  
stack[++top]=l-1; xq((]5Py  
} GURiW42  
if((j-l)>THRESHOLD){ ]AYP\\Xi  
stack[++top]=l+1; wY<s  
stack[++top]=j; 8JY0]G6  
} )NZH{G  
!i t orSl  
} q@wD@_  
file://new InsertSort().sort(data); G?}?>O  
insertSort(data); IB;yL/T  
} dy_Uh)$$|g  
/** ;O}%SCF7  
* @param data f]i"tqoI  
*/ =6~  
private void insertSort(int[] data) { ?"Ez  
int temp; ':(AiD-}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :GIBB=D9  
} gkd4)\9  
} ." xP {  
} m8L *LB  
KM;H '~PZi  
} ,1{qZ(l1  
jc"sPrv5  
归并排序: (}39f  
4J5zSTw  
package org.rut.util.algorithm.support; J3mLjYy  
J]U_A/f  
import org.rut.util.algorithm.SortUtil; <mFDC?j  
m+!.H\  
/** HF FG4'  
* @author treeroot DT`HS/~fH  
* @since 2006-2-2 ;}SGJ7  
* @version 1.0 M*0^<e~]F  
*/ q? ">  
public class MergeSort implements SortUtil.Sort{ bh@CtnO  
:XhF:c[.:  
/* (non-Javadoc) Es+I]o0K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (?Mn_FNE|  
*/ 1L*[!QT4  
public void sort(int[] data) { ]`)5 Qe4  
int[] temp=new int[data.length]; &?R/6"J  
mergeSort(data,temp,0,data.length-1); &ww-t..  
} xfeED^?  
W\~ie}D{  
private void mergeSort(int[] data,int[] temp,int l,int r){ M)#9Q=<  
int mid=(l+r)/2; qob!AU|  
if(l==r) return ; OWibmX  
mergeSort(data,temp,l,mid); ms0V1`  
mergeSort(data,temp,mid+1,r); _]zX W  
for(int i=l;i<=r;i++){ tM]Gu?6  
temp=data; 0;l~B  
} h}a}HabA  
int i1=l; 3WP\MM  
int i2=mid+1; RFRXOyGz$  
for(int cur=l;cur<=r;cur++){ G[ U5R?/  
if(i1==mid+1) $l*?Ce:  
data[cur]=temp[i2++]; )8C`EPe  
else if(i2>r) $Y7VA  
data[cur]=temp[i1++]; nriSVGi  
else if(temp[i1] data[cur]=temp[i1++]; OdFF)-K >~  
else i(|u g_^  
data[cur]=temp[i2++]; a(vt"MQ_  
} rNk'W,FU  
} #r#[&b  
]jD\4\M}  
} /O:4u_  
@ ;!IPiU  
改进后的归并排序: \OVFZ D  
Z5'^81m$o  
package org.rut.util.algorithm.support; ~ L4NK#  
yz K<yvN  
import org.rut.util.algorithm.SortUtil; %Lh%bqGz  
 ijOp{  
/** , ~ 1+MZ=  
* @author treeroot .6`r`|=  
* @since 2006-2-2 [ iTP:8  
* @version 1.0 <OEIG 0  
*/ 4,;*sc6*  
public class ImprovedMergeSort implements SortUtil.Sort { LVg#E*J  
=p4n @C  
private static final int THRESHOLD = 10; ]t)N3n6Bc  
9>4#I3  
/* LY0f`RX*&  
* (non-Javadoc) 9HJYrzf{%  
* oH w!~ c7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |^-D&C(Eu  
*/ 7nT|yL?  
public void sort(int[] data) { `+n0a@BVB  
int[] temp=new int[data.length]; &j:e<{@  
mergeSort(data,temp,0,data.length-1); vCi`htm%  
} / ]8e[t>!f  
+r!NR?^m  
private void mergeSort(int[] data, int[] temp, int l, int r) { _S{TjGZ&  
int i, j, k; oW^x=pS9  
int mid = (l + r) / 2; CaZc{  
if (l == r) \=WPJm`p  
return; nx%As  
if ((mid - l) >= THRESHOLD) 8p 4[:M@  
mergeSort(data, temp, l, mid); 1*p6UR&  
else = z mxki  
insertSort(data, l, mid - l + 1); >fYcr#i0[  
if ((r - mid) > THRESHOLD) (H uvo9  
mergeSort(data, temp, mid + 1, r); ]<<,{IQ  
else v'?Smd1v /  
insertSort(data, mid + 1, r - mid); 9KX% O-'  
B(M-;F  
for (i = l; i <= mid; i++) { `F/R:!v  
temp = data; E "=4(   
} -m}'I8  
for (j = 1; j <= r - mid; j++) { [RKk-8I  
temp[r - j + 1] = data[j + mid]; ufk2zL8y  
} = vqJ0!  
int a = temp[l]; b4L7]&  
int b = temp[r]; !AXLoq$SY  
for (i = l, j = r, k = l; k <= r; k++) { >0@w"aKn  
if (a < b) { ;)h?P.]  
data[k] = temp[i++]; :!s7B|_U  
a = temp; s/hgWW$  
} else { #~'d Y\&  
data[k] = temp[j--]; #qVTB@d  
b = temp[j]; 9@CRL=  
} 8|@) #:  
} jv.tg,c_6  
} vk E]$4P[$  
i&H^xgm  
/** j-BNHX  
* @param data  jfK&CA  
* @param l ifS#9N|8  
* @param i %JDQ[%3qY  
*/ L|WrdT D;  
private void insertSort(int[] data, int start, int len) { GcN}I=4|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Lx>[`QT  
} +- qk\sQ  
} ez32k[eV!  
} ,oH\rrglf  
} $B?8\>_?  
EeMKo  
堆排序: B](R(x>L  
33<{1Y[Q6E  
package org.rut.util.algorithm.support; P Ptmh. }e  
|a03S Zx  
import org.rut.util.algorithm.SortUtil; Lp-$Ie  
&ic'!h"  
/** 3ux7^au  
* @author treeroot ^Lb\k|U ,\  
* @since 2006-2-2 2'=)ese  
* @version 1.0 F_0D)H)N@  
*/ h;vY=r-  
public class HeapSort implements SortUtil.Sort{ IT:WiMDQ}  
CN(-Jd.b  
/* (non-Javadoc) jR}EBaI}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Psf'^42(v  
*/ gpyio1V>  
public void sort(int[] data) { I )yaR+l  
MaxHeap h=new MaxHeap(); } O+xs3Uv  
h.init(data); 'AK '(cZ  
for(int i=0;i h.remove(); ftMlm_u  
System.arraycopy(h.queue,1,data,0,data.length); 9nVb$pfe#  
} /[lEZ['^  
%Qz<Lk">.  
private static class MaxHeap{ ;76+J)  
yKUxjb^b\  
void init(int[] data){ 4G:~|N.{p  
this.queue=new int[data.length+1]; R"XycXn_$  
for(int i=0;i queue[++size]=data; [*O>Lk  
fixUp(size); muXP5MO  
} 6p }a!  
} +x{o  
> }f!. i  
private int size=0; gdD|'h  
W8QP6^lY  
private int[] queue; R\ 8[6H  
EGI$=Y  
public int get() { _R(ZvsOZ  
return queue[1]; [2xu`HT02  
} Y[)mHs2  
nHeJ20  
public void remove() { xO:h[  
SortUtil.swap(queue,1,size--); u(3 uZ:  
fixDown(1); XK\nOHLS  
} #Pk{emYW  
file://fixdown - q9m@!L  
private void fixDown(int k) { Uu8ayN j  
int j; =Pn"nkpML  
while ((j = k << 1) <= size) { ]e-QNI  
if (j < size %26amp;%26amp; queue[j] j++; s%y<FXUj  
if (queue[k]>queue[j]) file://不用交换 j~Fd8]@  
break; [Y!HQ9^LEp  
SortUtil.swap(queue,j,k); XM5)|D  
k = j; ':}9>B3 S  
} h/A\QW8Sd  
} ;]xc}4@=mg  
private void fixUp(int k) { _)<5c!  
while (k > 1) { uQbag]&j  
int j = k >> 1; ;;i419  
if (queue[j]>queue[k]) m$W2E.-$'#  
break; zQ:nL*X'Z"  
SortUtil.swap(queue,j,k); &a'mG=(K_c  
k = j; !BW!!/U  
} b=BNbmX  
} 8J&9}@y  
z[ ;n2o|s  
} nLAwo3  
du }HTrsC  
} hd9~Zw]V  
72RTEGy  
SortUtil:  nm`( ;<W  
%JPr 7 }  
package org.rut.util.algorithm; /L2ZI1v  
KM )MUPr  
import org.rut.util.algorithm.support.BubbleSort; cXt&k  
import org.rut.util.algorithm.support.HeapSort; |1 qrU(  
import org.rut.util.algorithm.support.ImprovedMergeSort; !XjZt  
import org.rut.util.algorithm.support.ImprovedQuickSort; <t!0{FJ  
import org.rut.util.algorithm.support.InsertSort; %"c;kvw  
import org.rut.util.algorithm.support.MergeSort; Mu:zWLM*M  
import org.rut.util.algorithm.support.QuickSort; ?r(vXq\  
import org.rut.util.algorithm.support.SelectionSort; &S*{a  
import org.rut.util.algorithm.support.ShellSort; rtJ@D2Hj^  
+%[, m&  
/** k>MXOUaW.  
* @author treeroot jqvw<+#  
* @since 2006-2-2  ~}p k^FA  
* @version 1.0 E`HA0/  
*/ |UlR+'rl  
public class SortUtil { + AjV0#n  
public final static int INSERT = 1; [E<A/_z  
public final static int BUBBLE = 2; )CoFRqz<h  
public final static int SELECTION = 3; um]N]cCD`  
public final static int SHELL = 4; nTsV>lQY,  
public final static int QUICK = 5; WxD$k3U  
public final static int IMPROVED_QUICK = 6; +KExK2=  
public final static int MERGE = 7; 3,i`FqQa  
public final static int IMPROVED_MERGE = 8; J R~s`>2  
public final static int HEAP = 9; 7}\AhQ, S  
[-#1;!k  
public static void sort(int[] data) { OY|9V  
sort(data, IMPROVED_QUICK); )40YA\V  
} Ie Chz d  
private static String[] name={ kz1Z K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qooTRqc#,  
}; 7o+VhW<|5  
M7Z&t'=  
private static Sort[] impl=new Sort[]{ (?uK  
new InsertSort(), aH%tD!%,o  
new BubbleSort(), tculG|/  
new SelectionSort(), s$9ow<oi]  
new ShellSort(), sX>|Y3S\U  
new QuickSort(), X_JC1  
new ImprovedQuickSort(), }Dcpe M?  
new MergeSort(), OmK0-fa/  
new ImprovedMergeSort(), O*/Utl  
new HeapSort() 2y$DTMu  
}; uU$/4{  
ZA_~o#0%  
public static String toString(int algorithm){ p+Bvfn  
return name[algorithm-1]; tIBEja^l  
} {hO|{vz  
Y8s-cc(  
public static void sort(int[] data, int algorithm) { @:'E9J06  
impl[algorithm-1].sort(data); 26_PFHQu4  
} ;$!0pxL)s  
MD1d  
public static interface Sort { <;+QK=f  
public void sort(int[] data); Lrx"Hn{  
} RM2feWm  
3!*` hQ;s  
public static void swap(int[] data, int i, int j) { zhRF>Y`  
int temp = data; |`wJ {-  
data = data[j]; yYk?K<ou  
data[j] = temp; T8T,G4Q  
} _mQ~[}y+?  
} k ;vOPcw  
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