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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。 ^J RTi'v  
插入排序: eurudl  
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package org.rut.util.algorithm.support; r{Q< a  
u.[JYZ  
import org.rut.util.algorithm.SortUtil; m4DH90~a8  
/** $McO'Bye{h  
* @author treeroot btF%}<o)  
* @since 2006-2-2 vf yv a  
* @version 1.0 {@#L'i|  
*/ 9(l'xuX  
public class InsertSort implements SortUtil.Sort{ Q#Y3%WF  
zrew:5*uZ  
/* (non-Javadoc) `az`?`i7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DXz8C -  
*/ >slN:dr0:  
public void sort(int[] data) { Dq?HUb^X  
int temp; "r V4[MVxt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5lxq-E3  
} vzyI::f?  
} .f !]@"\  
} ,4>WLJDo  
t1:S!@  
} ;c m wh<  
*L4]\wf  
冒泡排序: kk /+Vx~  
^0-e,d 9h  
package org.rut.util.algorithm.support; l q\'  
_> |R-vQ8  
import org.rut.util.algorithm.SortUtil; o9T@uWh+  
& GzhcW~  
/** o3i,B),K  
* @author treeroot 43u PH1 )  
* @since 2006-2-2 CDnR  
* @version 1.0 @O<@f8-  
*/  UE&C  
public class BubbleSort implements SortUtil.Sort{ p-i.ITRS  
#GY&$8.u*  
/* (non-Javadoc) -lP )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ukh$`q}  
*/ E*r  
public void sort(int[] data) { %Vw|5yA4  
int temp; ~`~%(DA=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <wUD  
if(data[j] SortUtil.swap(data,j,j-1); (pT(&/\8  
} rF8W(E_=  
} o8};e  
} 0\EpH[m}-  
} +(=0CA0GE  
?ae[dif  
} Q{.{#G  
rR,+G%[(=4  
选择排序: TbKP8zw{  
r 1l/) ;  
package org.rut.util.algorithm.support; H9Y2n 0  
7d|*postv  
import org.rut.util.algorithm.SortUtil; /RJ6nmN@}  
>-_:*/66!  
/** i\kTm?BQZ  
* @author treeroot )K>Eniou  
* @since 2006-2-2 %XEKhy  
* @version 1.0 3W7;f!  
*/ F\-B3i%0  
public class SelectionSort implements SortUtil.Sort { dWsT Jyx~  
LJRg>8  
/* Fb<n0[m  
* (non-Javadoc) !Y ;H(.A/  
* I! h(`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $$haVY&  
*/  ${A5-  
public void sort(int[] data) { @k=cN>ZMc  
int temp; |?OdV<5C  
for (int i = 0; i < data.length; i++) { "C_T]%'Wm  
int lowIndex = i; .ocx(_3G  
for (int j = data.length - 1; j > i; j--) { v-P8WFjca  
if (data[j] < data[lowIndex]) { ES^>[2Y  
lowIndex = j; 1a7!4)\  
} pyUNRqp  
} vVI6m{zYV  
SortUtil.swap(data,i,lowIndex); iP<k1#k  
} C>*5=p|T  
} a$w},= `E  
t9G}Yd[T  
} -Qg 2qN2{  
RY9+ 9i  
Shell排序: o .l;: Un  
Gs+\D0o!  
package org.rut.util.algorithm.support; @O@fyAz  
g d z  
import org.rut.util.algorithm.SortUtil;  DZ^=*.  
Vo #:CB=8  
/** ;knd7SC   
* @author treeroot %0vTA_W  
* @since 2006-2-2 |r5e{  
* @version 1.0 D+f'*|  
*/ %'$cH$%~J  
public class ShellSort implements SortUtil.Sort{ b0rt.XB  
V;/ XG}M  
/* (non-Javadoc) la!1[VeL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z^jGT+ 2  
*/ Q'>_59  
public void sort(int[] data) { 7r:nMPX  
for(int i=data.length/2;i>2;i/=2){ P6.)P|n7=  
for(int j=0;j insertSort(data,j,i); rHA/  
} H@ 1[SKBl  
} 9F-ViDI.  
insertSort(data,0,1); )&g2D@+{  
} @$K![]oD  
L|dab {9  
/** =[v2   
* @param data PprQq_j  
* @param j bw<~R2[  
* @param i QySca(1tN  
*/ Q{(,/}kA-  
private void insertSort(int[] data, int start, int inc) { Q&:92f\y  
int temp; %-0em!tUV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &kmd<  
} oj,Vi-TZ  
} u0(hVK`":  
} RBHqLg(  
Ugee?;]lu  
} *NX*/(Q  
&</ @0  
快速排序: FW6E)df  
&~D.")Dz  
package org.rut.util.algorithm.support; PLY-,Q&'  
o i,g  
import org.rut.util.algorithm.SortUtil; T`(;;%  
7Vof7Y <  
/** XO8 H]  
* @author treeroot cfO^CC  
* @since 2006-2-2 .DM1Knj  
* @version 1.0 SOi(5]  
*/ ;Wp`th!F  
public class QuickSort implements SortUtil.Sort{ mF$jC:Tb  
?8aWUgl  
/* (non-Javadoc) 1)c=15^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )H=[NB6J8  
*/ n"`SL<K1  
public void sort(int[] data) { "S:NU .c?  
quickSort(data,0,data.length-1); RQ$o'U9A  
} ;74 DT  
private void quickSort(int[] data,int i,int j){ QKuc21  
int pivotIndex=(i+j)/2; XxrO:$  
file://swap z 2EI"'4\9  
SortUtil.swap(data,pivotIndex,j); lhvZ*[[<)  
SieV%T0t1  
int k=partition(data,i-1,j,data[j]); IWbp^l+!t  
SortUtil.swap(data,k,j); y<gYf -E+  
if((k-i)>1) quickSort(data,i,k-1); +~v3D^L15  
if((j-k)>1) quickSort(data,k+1,j); 3=eGS  
 TVEF+t  
} dA!f v`,6-  
/** L"zgBB?K6  
* @param data 5|B(K @<  
* @param i 5)zj){wL  
* @param j ,`B>}  
* @return =S7C(;=4  
*/ t1_y1!u Q  
private int partition(int[] data, int l, int r,int pivot) { `OpC-Z&  
do{ pU)3*9?cIl  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ia>th\_&  
SortUtil.swap(data,l,r); zdQu%q  
} CIs1*:Q9  
while(l SortUtil.swap(data,l,r); E/Gs',Y  
return l; U\!LZ?gC  
} sMpC4E  
]KV8u1H>  
} { 'mY>s 7  
^eT>R,aB  
改进后的快速排序: \#*;H|U.x  
q,h.W JI  
package org.rut.util.algorithm.support; FO)nW:8]  
Mm[1Z;H  
import org.rut.util.algorithm.SortUtil; F v^80M=z  
kQiW5  
/** L\'qAfRZ  
* @author treeroot B qiq  
* @since 2006-2-2 G&@RLht  
* @version 1.0 eOnl s x/  
*/ +OuG!3+w  
public class ImprovedQuickSort implements SortUtil.Sort { yDBgSO{d  
f(ec/0W  
private static int MAX_STACK_SIZE=4096; n'(n4qH2#s  
private static int THRESHOLD=10; Q X5#$-H@  
/* (non-Javadoc) _EBDv0s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~w}[ ._'#M  
*/ *:\9 T#h  
public void sort(int[] data) { OMC|.[  
int[] stack=new int[MAX_STACK_SIZE]; z_0lMX`  
?d`+vHK]>  
int top=-1; c15^<6]g  
int pivot; X#C7r@H  
int pivotIndex,l,r; P VW9iT+c  
r*xw\  
stack[++top]=0; %l P   
stack[++top]=data.length-1; u5B/Em7,0  
w)>z3L m  
while(top>0){ v-aq".XQ  
int j=stack[top--]; . zMM86c  
int i=stack[top--]; @+vTGjHA  
I%WK*AORM  
pivotIndex=(i+j)/2; 'aWZ#GS*  
pivot=data[pivotIndex]; `lOoT  
JF=ABJ=  
SortUtil.swap(data,pivotIndex,j); PP`n>v=n  
UR=s{nFd  
file://partition vrDRSc6_  
l=i-1; 1 ![bu  
r=j; RN3D:b+  
do{ +Y[+2=lO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E%:zE Q  
SortUtil.swap(data,l,r); 4V3 w$:,  
} -+Dvyr  
while(l SortUtil.swap(data,l,r); R?Q-@N>wE  
SortUtil.swap(data,l,j); ',%&DA2  
uQ1;+P:L  
if((l-i)>THRESHOLD){ n?tAa|_  
stack[++top]=i; ;a)\5Uy  
stack[++top]=l-1; a];g  
} &3?yg61Ag  
if((j-l)>THRESHOLD){ tAi9mm;k  
stack[++top]=l+1; 4!qDG+m  
stack[++top]=j; !AHm+C_=Lg  
} MF(~!SOIG  
;^i,Q} b/  
} T480w6-@  
file://new InsertSort().sort(data); 0-HE, lv  
insertSort(data); t"Hrn3w  
} o$ k$  
/** O~xmz!?=  
* @param data #^V"=RbD  
*/ AUV$ S2  
private void insertSort(int[] data) { d(Ou\7  
int temp; ".ZiR7Z:$Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z+I-3v  
} U:e9Vq'N m  
} xGA0] _  
} 6vA 5;a@  
lhTbgM  
} i6kyfOI  
e{:qW'%  
归并排序: [\yI<^_a  
V:J6eks_  
package org.rut.util.algorithm.support; Uo ,3 lMr  
5?MvO]_  
import org.rut.util.algorithm.SortUtil; -;*Z!|e9  
+pm8;&  
/** Vba}RF[b  
* @author treeroot `-\ "p;Hp0  
* @since 2006-2-2 |O?Aj1g[c?  
* @version 1.0 1P_bG47  
*/ |M_Bbo@ud  
public class MergeSort implements SortUtil.Sort{ 91XHz14  
$u sU  
/* (non-Javadoc) r%9Sx:F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \zwb>^  
*/ 6dUP's_  
public void sort(int[] data) { %9.KH  
int[] temp=new int[data.length]; z-j\S7F  
mergeSort(data,temp,0,data.length-1); &Te:l-x  
} x{}m)2[Y  
aRmS{X3  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5;l_-0=  
int mid=(l+r)/2; m.*+0NG  
if(l==r) return ; < ]nI)W(  
mergeSort(data,temp,l,mid); 3a0C<hW  
mergeSort(data,temp,mid+1,r); iC]}M  
for(int i=l;i<=r;i++){ Cu]X &l  
temp=data; 'Bx7b(xqk  
} q.7CPm+  
int i1=l; S}E@*t2 h  
int i2=mid+1; OjI*HC  
for(int cur=l;cur<=r;cur++){ wF(FV4#gs  
if(i1==mid+1) Yq_zlxd%F  
data[cur]=temp[i2++]; 1"k@O)?JP  
else if(i2>r) x@~V975Y  
data[cur]=temp[i1++]; u$"5SGI6  
else if(temp[i1] data[cur]=temp[i1++]; k <qQ+\X  
else WJ*DWyd''  
data[cur]=temp[i2++]; F\e'z  
} h4#5j'RO  
} <5q}j-Q  
u+'=EGl  
} }bVyvH  
C*9m `xh  
改进后的归并排序: cg~FW2Q  
UnPSJ]VW  
package org.rut.util.algorithm.support; ec=C7M |  
K^S#?T|[9  
import org.rut.util.algorithm.SortUtil; 'e)t+  
?9mY #_Of  
/** $I9zJ"*  
* @author treeroot &}FYz8w 2/  
* @since 2006-2-2  JeA}d  
* @version 1.0 DM&"oa50  
*/ ^o 5q- ;a  
public class ImprovedMergeSort implements SortUtil.Sort { ihnM`TpMJ  
F ;D_zo?  
private static final int THRESHOLD = 10; /vhh2`  
!EFd- fk  
/* X[w9~t$\  
* (non-Javadoc) ^c5(MR7LD  
* uxcj3xE#d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 86_Zh5:  
*/ 25(\'484>  
public void sort(int[] data) { efh wbn  
int[] temp=new int[data.length]; )_jO8 )jB  
mergeSort(data,temp,0,data.length-1); S8y4 p0mV  
} K(p1+ GHC  
V)]&UbEL|  
private void mergeSort(int[] data, int[] temp, int l, int r) { A!J5Wz>Q5  
int i, j, k; i8{jMe!Sa  
int mid = (l + r) / 2; >M!>Hl/  
if (l == r) @dXf_2Tv=  
return; ':,LZ A8A  
if ((mid - l) >= THRESHOLD) Xy{b(b;9  
mergeSort(data, temp, l, mid); zumRbrz  
else u/zC$L3B(  
insertSort(data, l, mid - l + 1); 8,R]R=  
if ((r - mid) > THRESHOLD) BYY>;>V  
mergeSort(data, temp, mid + 1, r); Y PM>FDxDB  
else ReRRFkO"2  
insertSort(data, mid + 1, r - mid); ]X5*e'  
i~2>kxf;K1  
for (i = l; i <= mid; i++) { 7+ysE  
temp = data; ._yr7uY[M  
} V7^?jck  
for (j = 1; j <= r - mid; j++) { My ^pQ]@  
temp[r - j + 1] = data[j + mid]; pM=vW{"I/  
} ;?&;I!  
int a = temp[l]; XBc+_=)$  
int b = temp[r]; J+TYm%A;-  
for (i = l, j = r, k = l; k <= r; k++) { 8(A:XQN"h  
if (a < b) { =_XcG!"  
data[k] = temp[i++]; t.w?OyO  
a = temp; o{ (v  
} else { 1eJ\CdI  
data[k] = temp[j--]; LJ)3!Q/:  
b = temp[j]; saZ ;ixV  
} +vuW 9  
} ?SpI^Wn)[  
} |gaZq!l  
%cv%u6 b  
/** ]_Qc}pMF&  
* @param data ux }DWrR  
* @param l LU]~d< i99  
* @param i 5 9 09O  
*/ YK-R|z6K  
private void insertSort(int[] data, int start, int len) { u+V;r)J{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OJK/>  
} 8]c`n!u=`  
} {tMD*?C[6  
} ,^[s4 =3X?  
} 7KEGTKfW  
=FKB)#N  
堆排序: |&'*Z\*ya  
ZO`d  
package org.rut.util.algorithm.support; eyM3W}[S$/  
H^s SHj  
import org.rut.util.algorithm.SortUtil; &A9+%kOk>  
qkEy$[D9  
/** {/Cd^CK  
* @author treeroot p[wjHfIq  
* @since 2006-2-2 xq{4i|d)  
* @version 1.0 1@ina`!1O  
*/ iO@wqbg$6  
public class HeapSort implements SortUtil.Sort{ =_86{wlk  
%Xi%LUk{  
/* (non-Javadoc) 8 2qe|XD4p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Dz[|$dV  
*/ -7`J(f.rYC  
public void sort(int[] data) { aJF`rLm  
MaxHeap h=new MaxHeap(); \Q$);:=q Q  
h.init(data); ]]7T5'.  
for(int i=0;i h.remove(); bcYz?o6  
System.arraycopy(h.queue,1,data,0,data.length); @|@43}M]C-  
} zk]~cG5dT/  
fP|\1Y?CS  
private static class MaxHeap{ &td#m"wI  
f[RnL#*xJU  
void init(int[] data){ n*1UNQp@]O  
this.queue=new int[data.length+1]; %Xl@o  
for(int i=0;i queue[++size]=data; PEWzqZ|!;  
fixUp(size); p .HA `R>  
} pI`Ke"  
} *G^]j )/  
K+\hv~+@  
private int size=0; e=_hfOUC  
[>0r'-kI  
private int[] queue; qha<.Ro  
l.BNe)1!22  
public int get() { \9p;md`  
return queue[1]; N9Ml&*%oX{  
} !S:@x.n@iR  
*E]\l+]J  
public void remove() { 4Q>F4 v`  
SortUtil.swap(queue,1,size--); >W<5$.G  
fixDown(1); 1<83MO;  
} ;W].j%]L e  
file://fixdown !xI![N^  
private void fixDown(int k) { Ba6xkEd  
int j; sn( }5;  
while ((j = k << 1) <= size) { *v+ fkg  
if (j < size %26amp;%26amp; queue[j] j++; bhmjH(.t  
if (queue[k]>queue[j]) file://不用交换 C#Jj;Gd  
break; {@A2jk\  
SortUtil.swap(queue,j,k); c'2ra/?k  
k = j; 0YL0Oa+7  
} i`qh|w/b_  
} wk#QQDV3|0  
private void fixUp(int k) { EMG*8HRI>r  
while (k > 1) { 0h#M)Ft  
int j = k >> 1; BXY'%8q _a  
if (queue[j]>queue[k]) bed+Ur&  
break; YC'~8\x3z  
SortUtil.swap(queue,j,k); qE}YVKV*  
k = j; fsd>4t:" \  
} }b`*%141  
} U4gJ![>5j  
=HHg:"  
} V{{x~Q9  
DF2&j!  
} <.ky1aex7  
\`ReZu$  
SortUtil: $P3nP=mf  
U5"OhI  
package org.rut.util.algorithm; V-jL`(JF%  
7g9^Jn  
import org.rut.util.algorithm.support.BubbleSort; `'WLGQG  
import org.rut.util.algorithm.support.HeapSort; 03@| dN  
import org.rut.util.algorithm.support.ImprovedMergeSort; EB<q.  
import org.rut.util.algorithm.support.ImprovedQuickSort; Sj?sw]3  
import org.rut.util.algorithm.support.InsertSort; K8Zk{on  
import org.rut.util.algorithm.support.MergeSort; hm>*eJNp]  
import org.rut.util.algorithm.support.QuickSort; VWt'Kx"  
import org.rut.util.algorithm.support.SelectionSort; %<yM=1~>  
import org.rut.util.algorithm.support.ShellSort; VsEAo  
bl_WN|SQ  
/** QaR.8/xV  
* @author treeroot WmUW i{  
* @since 2006-2-2 RCXSz  
* @version 1.0 dRm'$ G9  
*/ B}+9U  
public class SortUtil { 4tJ4X' U  
public final static int INSERT = 1; X:&p9_O@  
public final static int BUBBLE = 2; 2j1v.%  
public final static int SELECTION = 3; Y{RB\}f(  
public final static int SHELL = 4; A'iF'<%  
public final static int QUICK = 5;  twmJ  
public final static int IMPROVED_QUICK = 6; }c ;um  
public final static int MERGE = 7; f*{;\n (.t  
public final static int IMPROVED_MERGE = 8; CL :M>(  
public final static int HEAP = 9; jSp&mD*xv  
#l#[\6  
public static void sort(int[] data) { &\|<3sd(  
sort(data, IMPROVED_QUICK);  iLcadX  
} oh0|2IrM  
private static String[] name={ )+4}Ix/q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zN/~a)  
}; }, &,Dt  
Y zW7;U S  
private static Sort[] impl=new Sort[]{ g{)H" 8L  
new InsertSort(), (Zg'pSs)  
new BubbleSort(), p]z54 ~  
new SelectionSort(), XqS*;Zj0  
new ShellSort(), 0nq}SH  
new QuickSort(), tO>OD#  
new ImprovedQuickSort(), VfqY_NmgC  
new MergeSort(), [j]J_S9jJ  
new ImprovedMergeSort(), >ydb?  
new HeapSort() G4%M$LJ h  
}; emY5xZ@N  
|\n)<r_  
public static String toString(int algorithm){ 9'#.>Q>0=j  
return name[algorithm-1]; fwv T2G4  
} :CST!+)o  
3p 1EScH  
public static void sort(int[] data, int algorithm) { Q=L$7   
impl[algorithm-1].sort(data); d3=6MX[c  
} <ivqe"m  
pebx#}]p-  
public static interface Sort { 9#T%bB "J  
public void sort(int[] data);  ]RX tC*  
} T19rbL_  
$K.%un Gm  
public static void swap(int[] data, int i, int j) { >+jbMAYSq  
int temp = data; #w,WwL!  
data = data[j]; .1}rzh}8  
data[j] = temp; !E {GcK  
} B?lBO V4v4  
} N~S[xS?  
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