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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。 F$,i_7Z&6  
插入排序: H3 |x  
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package org.rut.util.algorithm.support; 8Vm)jnM  
UTxqqcqEny  
import org.rut.util.algorithm.SortUtil; Hc-68]T  
/** L8$+%Gvo  
* @author treeroot tb'O:/  
* @since 2006-2-2 ^' b[#DG>F  
* @version 1.0 m@c\<-P  
*/ tc<HA7vpt~  
public class InsertSort implements SortUtil.Sort{ :&=`xAX-  
^s3SzB@  
/* (non-Javadoc) >~* w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8(GJz ~y  
*/ uRRp8hht  
public void sort(int[] data) { {# TZFB  
int temp; j !rQa^   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2u^/yl  
} OR-fC  
} qa)Qf,`  
} _*dUH5  
:J;*]o:  
} i{nFk',xX  
y/6%'56uF  
冒泡排序:  :)Z.!  
(Q][d+} /  
package org.rut.util.algorithm.support; drf?7%v  
!:<n]-U  
import org.rut.util.algorithm.SortUtil; !I[|\ 4j  
-ZE]VO*F  
/** (GDW9:  
* @author treeroot 20k@!BNq  
* @since 2006-2-2 GMYfcZ/,K  
* @version 1.0 ~"#[<d  
*/ tFYo d#  
public class BubbleSort implements SortUtil.Sort{ .0u@PcE:O  
5"I8ric  
/* (non-Javadoc) .7M :AS>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s&~i S[  
*/ G[z4 $0f  
public void sort(int[] data) { QwgP+ M+  
int temp; :PF6xL&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ N3QDPQ  
if(data[j] SortUtil.swap(data,j,j-1); ?*2Uw{~}  
} 1wM~),B8  
} QcG-/_,'}  
} kF29~  
} 7c aV-8:  
qA5PIEvdq  
} 1o%E(*M4I  
kB $?A8Olu  
选择排序: b1ma(8{{{  
,f?+QV\T.  
package org.rut.util.algorithm.support; LP- _i}Kq  
Cp.qL  
import org.rut.util.algorithm.SortUtil; 2 rx``,7Q  
P\2UIAPa\b  
/** nH7i)!cI~  
* @author treeroot kKEs >a  
* @since 2006-2-2 -Ay=*c.4  
* @version 1.0 19.oW49Sw  
*/ ]3bXJE  
public class SelectionSort implements SortUtil.Sort { R8![ $mkU  
*wD| e K7  
/* q7u bRak  
* (non-Javadoc) $~FnBD%|{  
* ]'!$T72  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1xzOD@=dI  
*/ 7\nR'MOZ  
public void sort(int[] data) { g;G]Xi.B}  
int temp; |;k@Zlvc  
for (int i = 0; i < data.length; i++) { ~s4o1^6L  
int lowIndex = i; .`Rju|l  
for (int j = data.length - 1; j > i; j--) { +JrbC/&  
if (data[j] < data[lowIndex]) { .1#G*A|  
lowIndex = j; IMtfi(Y%F  
} D*o5fPvFO  
} L>.* ^]  
SortUtil.swap(data,i,lowIndex); '|^<|S_+K  
} QkU6eE<M*  
} +(l(|lQy$  
rI.CCPY~s  
} $>=?'wr  
yhJA{nL=  
Shell排序: {]V+C=`  
b]cnTR2E  
package org.rut.util.algorithm.support; i4s_:%+  
+u\kTn  
import org.rut.util.algorithm.SortUtil; k=M_2T'  
EPu-oE=HW4  
/** A8oTcX_  
* @author treeroot jWjp0ii  
* @since 2006-2-2 ])tUXU>  
* @version 1.0 yi&6HNb  
*/ Um2RLM%  
public class ShellSort implements SortUtil.Sort{ %=[xc?  
G%FLt[  
/* (non-Javadoc) c%x9.s<+1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ehw2o-s^  
*/ VAnP3:  
public void sort(int[] data) { }8&?  
for(int i=data.length/2;i>2;i/=2){ KMll8X  
for(int j=0;j insertSort(data,j,i); (mOL<h[)IP  
} EV.F/W h  
} PL|zm5923  
insertSort(data,0,1); 3)0z(30  
} rm?C_  
(\$=de>?  
/** k;V (rf`  
* @param data "J"RH:$v  
* @param j -,a@bF:  
* @param i `W9~u: F  
*/ ,+GS.]8<  
private void insertSort(int[] data, int start, int inc) { Ls6C*<8  
int temp; 1G<S'd+N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); s8V:;$ !  
} ^Gwpx +  
} E/@  
} Ou7nk:I@  
tV"Jh>Z  
} iBh.&K{j  
7KJ%-&L^  
快速排序: Dn[uzY6  
LMHii Os,  
package org.rut.util.algorithm.support; 4Is Wp!`W  
P{+,?X\  
import org.rut.util.algorithm.SortUtil; ^I:f4RWo  
":!1gC  
/** 6Wk9"?+1  
* @author treeroot ^y.|KA3[  
* @since 2006-2-2 jp880}  
* @version 1.0 aJLc&o 8Yg  
*/ p\22_m_wd  
public class QuickSort implements SortUtil.Sort{ "@YtxYTW-  
lS{ ^*(a  
/* (non-Javadoc) ^;'FC vd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WP5Vev9*+  
*/ 9c{T|+ ]  
public void sort(int[] data) { R5N~%Dg)3  
quickSort(data,0,data.length-1); &$yDnSt\  
} V;d<S@$  
private void quickSort(int[] data,int i,int j){ U etI 4`  
int pivotIndex=(i+j)/2; ]jSRO30H3<  
file://swap JH._/I  
SortUtil.swap(data,pivotIndex,j); nm,(Wdr  
snP]&l+  
int k=partition(data,i-1,j,data[j]); nQ@<[KNd  
SortUtil.swap(data,k,j); GG %*d]  
if((k-i)>1) quickSort(data,i,k-1); *X uIA-9  
if((j-k)>1) quickSort(data,k+1,j); zNM*xPgS  
Ys]cJ]  
} d >O/Zal  
/** D<'G\#n3I=  
* @param data rN'8,CV  
* @param i J"K(nKXO_?  
* @param j 0IyT(1hS  
* @return *^:s! F  
*/ K0|:+s@u  
private int partition(int[] data, int l, int r,int pivot) { Uf9L*Z'6il  
do{ afE8Kqa:H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pP%9MSCi  
SortUtil.swap(data,l,r); y ~Fi  
} 5[]Yxl  
while(l SortUtil.swap(data,l,r); Q@[(0R1  
return l; wW7#M  
} O-!Q~;3][  
NH4T*R)Vz  
} ;Irn{O  
"gt1pf~y  
改进后的快速排序: 5| Oj\L{  
v oO7W"  
package org.rut.util.algorithm.support; \46*4?pP  
[WI'oy  
import org.rut.util.algorithm.SortUtil; |>b;M ,`OO  
tB VtIOm9  
/** u/ri {neP{  
* @author treeroot P1R[M|Fx  
* @since 2006-2-2 OHt^e7\  
* @version 1.0 -/:K.SY,  
*/ +Jm[IN  
public class ImprovedQuickSort implements SortUtil.Sort { Ii!{\p!  
T.W^L'L `  
private static int MAX_STACK_SIZE=4096; FSkLR h  
private static int THRESHOLD=10; )Myx(w"S  
/* (non-Javadoc) 4I#@xm8)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c]"w0a-`^@  
*/ |l@z7R+4*  
public void sort(int[] data) { iUs_)1  
int[] stack=new int[MAX_STACK_SIZE]; '(-H#D.oy'  
Awr(}){  
int top=-1; YF>1 5{H  
int pivot; y;_F[m  
int pivotIndex,l,r; sFHqLG{/  
39I|.B"  
stack[++top]=0; u8gqWsvruM  
stack[++top]=data.length-1; #CcEI  
f4VdH#eng`  
while(top>0){ ]x(6^:D5  
int j=stack[top--]; ;@ G^eQ  
int i=stack[top--]; dKhS;!K9p  
"&o"6ra }  
pivotIndex=(i+j)/2; _# cM vl k  
pivot=data[pivotIndex]; {R"mvB`  
(?ULp{VPFl  
SortUtil.swap(data,pivotIndex,j); 14A(ZWwq9  
%Y,Ru)5}  
file://partition 9W, %[  
l=i-1; |oSqy  
r=j; HU$]o N  
do{ uG/'9C6Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <~aKwSF[wW  
SortUtil.swap(data,l,r); Pz\ByD  
} QO>';ul5  
while(l SortUtil.swap(data,l,r); #XG3{MGX[  
SortUtil.swap(data,l,j); X&i;WI  
=yoR>llbBC  
if((l-i)>THRESHOLD){ Ikw.L  
stack[++top]=i; cc>b#&s  
stack[++top]=l-1; 'z{|#zd9  
} CD5% iFy  
if((j-l)>THRESHOLD){ j-VwY/X  
stack[++top]=l+1; h<bhH=6~  
stack[++top]=j; KW3<5+w]c  
} EhW"s%Q  
j@Pd" Z9  
} Bs|Xq'1M!;  
file://new InsertSort().sort(data); TY5R=jh=  
insertSort(data); 5g O9 <  
} 4O.R=c2}7>  
/** E " >`  
* @param data ijvDFyN>  
*/ 2 |JEGyDS-  
private void insertSort(int[] data) { Dr[;\/|#  
int temp; pzaU'y#PM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w%..*+P  
} u&[L!w  
} 2`j{n \/  
} fD3'Ye<R  
d R=0K  
} R eb.x_  
BkPt 1i  
归并排序: cvE)  
v*FbvrY  
package org.rut.util.algorithm.support; sC.r$K+k5  
4_sJ0=z-  
import org.rut.util.algorithm.SortUtil; 6\jbSe  
ZJc{P5a1J  
/** *po o.Zz  
* @author treeroot !]Qk?T~9-  
* @since 2006-2-2 -iY-rzW  
* @version 1.0 \13Q>iAu  
*/  o0>|  
public class MergeSort implements SortUtil.Sort{ kFY2VPP~  
fA]sPh4Uag  
/* (non-Javadoc) u[PG/ploc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c q[nqjC=  
*/ /#SfgcDt  
public void sort(int[] data) { eThFRU3 F  
int[] temp=new int[data.length]; =S\^j"  
mergeSort(data,temp,0,data.length-1); v\MQ?VC  
} Q4L=]qc T  
nw,.I [  
private void mergeSort(int[] data,int[] temp,int l,int r){ /5z,G r  
int mid=(l+r)/2; @$ Nti>  
if(l==r) return ; &4sz:y4T>  
mergeSort(data,temp,l,mid); F?"Gln~;  
mergeSort(data,temp,mid+1,r); r@]`#PL  
for(int i=l;i<=r;i++){ 9I2&Vx=DSt  
temp=data; ?U[6X| 1  
} MRK=\qjD  
int i1=l; qV idtSb  
int i2=mid+1; >ov#\  
for(int cur=l;cur<=r;cur++){ l2YClK  
if(i1==mid+1) T3<1{"&  
data[cur]=temp[i2++]; b_6cK#  
else if(i2>r) _&U#*g  
data[cur]=temp[i1++]; LyNmn.nN  
else if(temp[i1] data[cur]=temp[i1++]; ='w 2"4  
else ,}@4@ >?K  
data[cur]=temp[i2++]; Mzg P@tB  
} a#i|)[  
} +se OoTKR  
K1A<m=If  
} ]s^+/8d=  
+Ek1~i.  
改进后的归并排序: I= <eCv  
Ayg^<)JWh  
package org.rut.util.algorithm.support; oQ/T5cOj  
@mxaZ5Vv}  
import org.rut.util.algorithm.SortUtil; k'N``.  
v<g~ EjzCf  
/** _[rQt8zn  
* @author treeroot r-!Qw1  
* @since 2006-2-2 <%% )C>l  
* @version 1.0 vY|YqWt  
*/ "u^vBd[}  
public class ImprovedMergeSort implements SortUtil.Sort { & fWC-|  
Y/I)ECm  
private static final int THRESHOLD = 10; eD2eDxN2  
BY[7`@  
/* \xl$z *zI  
* (non-Javadoc) {r;_nMfH|[  
* EK[J!~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tu$rVwgM  
*/ IvkYM`%  
public void sort(int[] data) { 9_jiUZFje  
int[] temp=new int[data.length]; 5Rs#{9YE  
mergeSort(data,temp,0,data.length-1); PH:5  
} SpU|Q1Q/h  
[a!AK kj  
private void mergeSort(int[] data, int[] temp, int l, int r) { .81Y/Gad_  
int i, j, k; w:deQ:k  
int mid = (l + r) / 2; !vJ$$o6#  
if (l == r) Wu|MNB?M  
return; o@.{|j  
if ((mid - l) >= THRESHOLD) 0x5Ax=ut  
mergeSort(data, temp, l, mid); & C)1(  
else %bF157X5An  
insertSort(data, l, mid - l + 1); uF}dEDB|;  
if ((r - mid) > THRESHOLD) Keo<#Cc?  
mergeSort(data, temp, mid + 1, r); iEr?s-or  
else *U$]U0M  
insertSort(data, mid + 1, r - mid); (.@peHu)#  
gYrB@W; 2  
for (i = l; i <= mid; i++) { 6.KEe^[-  
temp = data; D QxuV1  
} c?_7e9}2  
for (j = 1; j <= r - mid; j++) { ~M H ^R1=]  
temp[r - j + 1] = data[j + mid]; p o)lN[v  
} V?G%-+^  
int a = temp[l]; ~D|,$E tX4  
int b = temp[r]; &@CUxK  
for (i = l, j = r, k = l; k <= r; k++) { |X A0F\  
if (a < b) { bsU$$;  
data[k] = temp[i++]; 9m2FH~  
a = temp; %} zkmEY.e  
} else { .(cpYKFX  
data[k] = temp[j--]; `4xQ#K.-  
b = temp[j]; |T/OOIA=sI  
} c,;VnZ 9wC  
} `f&::>5tD  
} bK0(c1*a[e  
LkzA_|8:D  
/** .4"BN<9  
* @param data j][&o-Ev  
* @param l >}~[ew  
* @param i ~? aFc)  
*/ J Hm Pa  
private void insertSort(int[] data, int start, int len) { d@{12 hq  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 59j`Z^e  
} `~=z0I  
} WZ,k][~  
} }MMKOr(  
} ^8 ,prxaok  
jG{?>^  
堆排序: GU/P%c/V  
Os>&:{D4!  
package org.rut.util.algorithm.support; LB]3-FsU+  
A. tGr(r  
import org.rut.util.algorithm.SortUtil; ]W Yub1  
)Z/w|5<  
/** ySiZ@i4  
* @author treeroot 9RJ#zUK  
* @since 2006-2-2 psIo[.$rTk  
* @version 1.0 '9.@r\g  
*/ JSju4TQ4  
public class HeapSort implements SortUtil.Sort{ 6g#yzex  
/P9fcNP{y  
/* (non-Javadoc) K7JZUS`C!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )O+Zbn  
*/ )ej1)RU"  
public void sort(int[] data) { ;g#nGs>  
MaxHeap h=new MaxHeap(); #U%HG TE0  
h.init(data); T`]%$$1s  
for(int i=0;i h.remove(); QwG_-  
System.arraycopy(h.queue,1,data,0,data.length); 1@'I eywg  
} 1QmOUw}yj  
}[!=O+g O  
private static class MaxHeap{ ;J+iwS*Z  
Y&,}q_Z:  
void init(int[] data){ =BR+J9  
this.queue=new int[data.length+1]; C"5P7F{  
for(int i=0;i queue[++size]=data; x5\Du63  
fixUp(size); @IbZci)1  
} 1@LUxU#Uu$  
} > JA-G@3i  
 ^ b5+A6?  
private int size=0; IOxtuR  
5cA:;{z];g  
private int[] queue; alzdYiGf  
Ici4y*`M  
public int get() { a"O;DYh  
return queue[1]; kFkI[WKyZ  
} <a_ (qh@B  
abS~'r14  
public void remove() { E+<GsN]  
SortUtil.swap(queue,1,size--); ~$^ >Vo  
fixDown(1); #M!{D  
} lq3D!+ m  
file://fixdown ) 5Ij  
private void fixDown(int k) { qo \9,<  
int j; `mD!z.`U  
while ((j = k << 1) <= size) { iE;F=Rb  
if (j < size %26amp;%26amp; queue[j] j++; 3jW&S  
if (queue[k]>queue[j]) file://不用交换 @C=gMn.E  
break; (#85<|z  
SortUtil.swap(queue,j,k); /!>OWh*~  
k = j; ]3 GO_tL  
} /4 Kd  
} #Q=c.AL{  
private void fixUp(int k) { nW\W<[O9  
while (k > 1) { 4|Y1W}!0/  
int j = k >> 1; jvR(e"  
if (queue[j]>queue[k]) ~9k E.  
break; @aFk|.6  
SortUtil.swap(queue,j,k); Cq<Lj  
k = j; {=J:  
} w3b?i89  
} *+6iXMwe  
eAP 8!  
} !L9]nO 'BL  
Pq{p\Qkj  
} If&y 5C  
u+6D|  
SortUtil: [%6)  
xbcmvJrG  
package org.rut.util.algorithm; U6H3T0#  
vQ2{ +5!|  
import org.rut.util.algorithm.support.BubbleSort; iY,oaC~?"N  
import org.rut.util.algorithm.support.HeapSort; &KI|qtQ;  
import org.rut.util.algorithm.support.ImprovedMergeSort; WL,2<[)Ew  
import org.rut.util.algorithm.support.ImprovedQuickSort; %8Y+Df;ax  
import org.rut.util.algorithm.support.InsertSort; SS _6VE*sI  
import org.rut.util.algorithm.support.MergeSort; ^PJN$BJx  
import org.rut.util.algorithm.support.QuickSort; )~"0d;6_  
import org.rut.util.algorithm.support.SelectionSort; HFyQ$pbBU  
import org.rut.util.algorithm.support.ShellSort; !.pcldx  
c`S+>:  
/** ~d\V>  
* @author treeroot c3#eL  
* @since 2006-2-2 6;!)^b  
* @version 1.0 o.zP1n|G~r  
*/ Ml?KnSb  
public class SortUtil { '?_~{\9<  
public final static int INSERT = 1; 4 eSFpy1  
public final static int BUBBLE = 2; Ayn$,  
public final static int SELECTION = 3; {=gJGP/}_  
public final static int SHELL = 4; 5X5UUdTM  
public final static int QUICK = 5; ?X\.O-=4X  
public final static int IMPROVED_QUICK = 6; 8~RJnwF^  
public final static int MERGE = 7; y | I9"R  
public final static int IMPROVED_MERGE = 8; =h ~n5wQG  
public final static int HEAP = 9; ~>0H k}Hv  
lt2MB#  
public static void sort(int[] data) { fWri7|"0h  
sort(data, IMPROVED_QUICK); 3a ZS1]/  
} {t|#>UCK  
private static String[] name={ @}{uibLD\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D8Mq '$-  
}; C#)T$wl[E  
Hmx.BBz  
private static Sort[] impl=new Sort[]{ Q uw|KL  
new InsertSort(), GM)q\Hx{  
new BubbleSort(), /<k 5"C% z  
new SelectionSort(), O2 + K  
new ShellSort(), ^~bd AO81  
new QuickSort(), N cGFPi (Z  
new ImprovedQuickSort(), >@4AxV\  
new MergeSort(), @B(E&  
new ImprovedMergeSort(), 7(^F@,,@  
new HeapSort() ?q2Yk/P  
}; R2 J A(Hn  
uf (_<~  
public static String toString(int algorithm){ &0%B3  
return name[algorithm-1]; E:PPb9Kd  
} xpwy%uo  
g4+Hq *  
public static void sort(int[] data, int algorithm) { E_Y!in 70  
impl[algorithm-1].sort(data); |m@>AbR5dk  
} IX<9_q  
=]pEvj9o  
public static interface Sort { HPt\ BK  
public void sort(int[] data); A2A_F|f  
} )ZrB-(u~k  
fZ;}_wR-H  
public static void swap(int[] data, int i, int j) { |Sua4~yL(  
int temp = data; @'?gan#(  
data = data[j]; 8.I3%u  
data[j] = temp; r=A A /n<  
} ({!H ()  
} |90X_6(  
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