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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。 [aC2ktI  
插入排序: YF");itH  
eR1]<Z$W\  
package org.rut.util.algorithm.support; =uR[Jewa  
a67NWH  
import org.rut.util.algorithm.SortUtil; Xo4K!U>TzZ  
/** fl9J  
* @author treeroot ;#D:S6 L  
* @since 2006-2-2  - zEQ/6  
* @version 1.0 u|8V7*)3  
*/ Y6%O9b  
public class InsertSort implements SortUtil.Sort{ gJn_8\,C>Q  
c;7ekj  
/* (non-Javadoc) D #twS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I'uRXvEr7  
*/ tdRnRoB  
public void sort(int[] data) { 5E|/n(  
int temp; 5@Lz4 `  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +Y^/0=6h  
} 0/%VejZ'  
} R75np^  
} Yg7C"3;Vt  
XAr YmO  
} r`'n3#O*  
zTt6L6:u  
冒泡排序: z+@Jx~<i  
B8G1 #V_jK  
package org.rut.util.algorithm.support; mm<rdo(`  
?To r)>A'  
import org.rut.util.algorithm.SortUtil; <N;HB&mr  
B1gBvss  
/**  t"'aQr  
* @author treeroot Y_&)>;  
* @since 2006-2-2 Z4Qq#iHZR  
* @version 1.0 5AT[1@H(_  
*/ '.DFyHsq  
public class BubbleSort implements SortUtil.Sort{ ~lLIq!!\  
1~q|%"J  
/* (non-Javadoc) }" 'l8t0?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tm}0kWx  
*/ P\H$*6v(  
public void sort(int[] data) { VSt)~  
int temp; ]q@6&]9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ d1>Nn!m  
if(data[j] SortUtil.swap(data,j,j-1); 6jtnH'E/  
} Ol]+l]  
} 5Y97?n+6  
} ] Vbv64M3  
} F .JvMy3  
O9W|&LAL  
} "h}miVArS  
`H6kC$^Ofx  
选择排序: F&lvofy23  
t1YVE%`w  
package org.rut.util.algorithm.support; /g!', r,  
qMe$Qr8  
import org.rut.util.algorithm.SortUtil; 9rmOf Jo:  
oUBn:Ir@  
/** $/Q*@4t  
* @author treeroot <J QvuC  
* @since 2006-2-2 jsG epi9  
* @version 1.0 ZK@ENfG  
*/ H?>R#Ds-  
public class SelectionSort implements SortUtil.Sort { <OEu 4,~:  
?8Hr 9  
/* !8U\GR `  
* (non-Javadoc) Ytnk^/Z1L  
* AA um1xl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hIPU%  
*/ .5zqpm  
public void sort(int[] data) { (TV ye4Z  
int temp; ,$96bF "#  
for (int i = 0; i < data.length; i++) { <k&Q"X:"  
int lowIndex = i; }Z_w8+BZ  
for (int j = data.length - 1; j > i; j--) { N?h=Zl|  
if (data[j] < data[lowIndex]) { 0ZXG{Gp9S  
lowIndex = j; AVA hS}*t  
} \]W*0t>s  
} C<\|4ERp  
SortUtil.swap(data,i,lowIndex); >8nRP%r[5,  
} d-=/@N!4e  
} l(@UpV-  
G~I@'[ur  
} IgOo2N"^l  
iC`K$LY4W  
Shell排序: !e >EDYbY  
/JfRy%31  
package org.rut.util.algorithm.support; )FkJ=P0  
:.IVf Zw  
import org.rut.util.algorithm.SortUtil; VMUK|pC4 K  
%_!YonRY|X  
/** h$FpH\-  
* @author treeroot  IR,`-  
* @since 2006-2-2 >?q()>l  
* @version 1.0 spV/+jy{  
*/ nxP>IfSA  
public class ShellSort implements SortUtil.Sort{ hSq3LoHV  
'8v^.gZ  
/* (non-Javadoc) <3iL5}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #$QC2;/)F  
*/ >v9 ("  
public void sort(int[] data) { < 6[XE  
for(int i=data.length/2;i>2;i/=2){ lUd/^u`  
for(int j=0;j insertSort(data,j,i); Ms.1RCup  
} wPYz&&W  
} t%wC~1  
insertSort(data,0,1); `Li3=!V[  
} G-[fz  
Lmx95[#@a  
/** {(i>$RG_  
* @param data +v3@WdLcD  
* @param j :e 5)Q=lX  
* @param i N*N@wJy:5  
*/ @JS O=8  
private void insertSort(int[] data, int start, int inc) { cWSiJr):r  
int temp; ]VY}VALZ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); : uglv6  
} C#`VVtei  
} Lf|5miO  
} Q"KD O-t  
Re**)3#gn  
} b/='M`D}#G  
n0:Y* Op  
快速排序: JB~79Lsdz  
NWuS/Ur`9  
package org.rut.util.algorithm.support; qr[H0f]  
pt&(c[  
import org.rut.util.algorithm.SortUtil; y|1,h}H^n  
(-tF=wR,W  
/** Gk0f#;  
* @author treeroot #8G (r9  
* @since 2006-2-2 w:P$ S  
* @version 1.0 TOp|Qtn  
*/ GtRc7,  
public class QuickSort implements SortUtil.Sort{ r7r>1W%4  
x,a(O@  
/* (non-Javadoc) 2B{~"<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tY^MP5*  
*/ <J4|FOz!=  
public void sort(int[] data) { y-qbK0=X4  
quickSort(data,0,data.length-1); !fXwX3B  
} `VT[YhO#}  
private void quickSort(int[] data,int i,int j){ e$M \HPc  
int pivotIndex=(i+j)/2; K r9 P#Y  
file://swap Mj2o>N2,  
SortUtil.swap(data,pivotIndex,j); a,3} o:f  
!%<bLD8  
int k=partition(data,i-1,j,data[j]); ;ZMm6o  
SortUtil.swap(data,k,j); \*Ro a&<!  
if((k-i)>1) quickSort(data,i,k-1); l(Dkmt>^  
if((j-k)>1) quickSort(data,k+1,j); a%a_sR\)  
%y{#fZHc  
} =Jd ('r  
/** 3VZeUOxY\W  
* @param data s*.CJ  
* @param i XS5*=hv:  
* @param j ,b2YUb]U  
* @return 7yGc@kJ?  
*/ j^ VAA\  
private int partition(int[] data, int l, int r,int pivot) { _zq"<Q c  
do{ u/3[6MIp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iO)FZ%?"  
SortUtil.swap(data,l,r); s*<\ mwB  
} 8C1 'g7A<  
while(l SortUtil.swap(data,l,r); RM8p[lfX  
return l; ]03+8 #J  
} j3`# v3  
v|:2U8YREf  
} eHUr!zH:  
WV]%llj^  
改进后的快速排序: ]]~tFdh  
9Ml^\|  
package org.rut.util.algorithm.support; E_-3G<rt  
>h+[#3vD  
import org.rut.util.algorithm.SortUtil; K]4XD1n7  
V3 j1M?>  
/** ns|)VX   
* @author treeroot 42X N*br  
* @since 2006-2-2 ;Z%PBMa  
* @version 1.0 \~|+*^e)  
*/ 7p'L(dq  
public class ImprovedQuickSort implements SortUtil.Sort { bi`{ k\3A  
|F _ Z  
private static int MAX_STACK_SIZE=4096; S&]AIG)  
private static int THRESHOLD=10; Wy{xTLXk2  
/* (non-Javadoc) d7 )&Z:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tW4|\-E"s4  
*/ PMER~}^  
public void sort(int[] data) { H4[];&]xr  
int[] stack=new int[MAX_STACK_SIZE]; DK8eFyG^2  
 AnK-\4  
int top=-1; Y)*5M  
int pivot; W`HO Q  
int pivotIndex,l,r; oG5 :]/F  
C{mL]ds<  
stack[++top]=0; tHlKo0S$0  
stack[++top]=data.length-1; 4 [2^#t[  
R%)ZhG*  
while(top>0){ 6[g~p< 8n}  
int j=stack[top--]; XRi/O)98o  
int i=stack[top--]; X2>qx^jT  
DA'A-C2  
pivotIndex=(i+j)/2; \LX!n!@  
pivot=data[pivotIndex]; ;Ml??B]C  
M{#  
SortUtil.swap(data,pivotIndex,j); LgN\%5f-  
{k.Dy92  
file://partition >iefEv\  
l=i-1; 1T(:bM_t`7  
r=j; Wez"E2J`  
do{ 6*3J3Lc_<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^+Ho#]  
SortUtil.swap(data,l,r); W\xM$#)m  
} 9Yih%d,  
while(l SortUtil.swap(data,l,r); @* a'B=7  
SortUtil.swap(data,l,j); TG ,T>'   
d4@\5<  
if((l-i)>THRESHOLD){ Xq"@Z  
stack[++top]=i; B^'Uh+Y  
stack[++top]=l-1; x|B$n } B  
} uYW9kw>$  
if((j-l)>THRESHOLD){ tEEeek(!  
stack[++top]=l+1; 99Jk<x k  
stack[++top]=j; iwb]mJUA  
} @.T w*t  
b"x[+&%i  
} nNe`?TS?f  
file://new InsertSort().sort(data); B{IYVviiP  
insertSort(data); 7gIK+1`  
} jA ?tDAx`  
/** Fa]fSqy@;  
* @param data 2K/+6t}  
*/ pyPS5vWG  
private void insertSort(int[] data) { Of| e]GR  
int temp; 5X^bvW26  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BzFD_A>j;_  
} a|B^%  
} +QS7F`O  
} B-63IN  
}T!2IaAB  
} ppcuMcR{  
[5&zyIi  
归并排序: Q8:`;W  
1S !<D)n  
package org.rut.util.algorithm.support; hR;J#w  
Mv9q-SIc[  
import org.rut.util.algorithm.SortUtil; ]KX _a1e  
I{Pny/d`  
/** /rRQ*m_  
* @author treeroot &=SP"@D  
* @since 2006-2-2 -OLXRc=  
* @version 1.0 5fGUJ[F=  
*/ @D.]PZf  
public class MergeSort implements SortUtil.Sort{ 1iOQ8hD  
MZ_+doN  
/* (non-Javadoc) j!c[$;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {4\hxyw  
*/ N_jCx*.G  
public void sort(int[] data) { r Ntc{{3_  
int[] temp=new int[data.length]; ~i)O^CKq  
mergeSort(data,temp,0,data.length-1); m#[tY >Q[b  
} UloZo? e`  
;bJ2miO"e  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ydv\a6  
int mid=(l+r)/2; !6:q#B*  
if(l==r) return ; F">>,Oc)U"  
mergeSort(data,temp,l,mid); <,S0C\la=  
mergeSort(data,temp,mid+1,r); !*8x>,/>  
for(int i=l;i<=r;i++){ s }P-4Sg  
temp=data; A=X2zm>9  
} {V& 2k9*  
int i1=l; Up|\&2_  
int i2=mid+1; ZB-+ bY  
for(int cur=l;cur<=r;cur++){ -"L)<J@gQ?  
if(i1==mid+1) D7Y5q*F  
data[cur]=temp[i2++]; <&'Ye[k  
else if(i2>r) X8T7(w<0%f  
data[cur]=temp[i1++]; R#Z1+&='  
else if(temp[i1] data[cur]=temp[i1++]; Nkfu k  
else a$p2I+lX  
data[cur]=temp[i2++]; /f!_dJ^  
} H!dUQ  
} MxiU-  
ailje  
} dvUBuY^[  
0 `X%&  
改进后的归并排序: 1\d$2N"  
Yuy7TeJRx  
package org.rut.util.algorithm.support; [0GM!3YJ7  
l'~]8Wo1  
import org.rut.util.algorithm.SortUtil; |=.z0{A7H  
<DS+"#  
/** ^iJMUV|  
* @author treeroot SU, t,i  
* @since 2006-2-2 7pNTCZY|  
* @version 1.0 ?i4}[q  
*/ LkFXUt?  
public class ImprovedMergeSort implements SortUtil.Sort { "A jtNL5  
;S+c<MSl  
private static final int THRESHOLD = 10; `~( P  
kmM4KP#&|  
/* 4%WV)lt  
* (non-Javadoc) Fz+0h"  
* ;K?fAspSH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U5mec167  
*/ 0|X!Uw-Q%_  
public void sort(int[] data) { 2tvMa%1^  
int[] temp=new int[data.length]; ?MhRdY  
mergeSort(data,temp,0,data.length-1); sY,!Ir`/`  
} ;_0)f  
pt8X.f,iA  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~B%EvG7:n  
int i, j, k; :>lica_  
int mid = (l + r) / 2; v>Il #  
if (l == r) Y_`D5c:  
return; `$`:PT\Zv4  
if ((mid - l) >= THRESHOLD) {+[~;ISL  
mergeSort(data, temp, l, mid); %+$P<Rw7  
else xmtbSRgK9  
insertSort(data, l, mid - l + 1); ' U(v  
if ((r - mid) > THRESHOLD) )61CrQiY  
mergeSort(data, temp, mid + 1, r); ~4Is   
else dJ`Fvj  
insertSort(data, mid + 1, r - mid); {Ny\9r  
&)Z8Qu  
for (i = l; i <= mid; i++) { 1Qf21oN{  
temp = data; k>{i_`*  
} uVqJl{e\  
for (j = 1; j <= r - mid; j++) { ovCk :Vz  
temp[r - j + 1] = data[j + mid]; bIizh8d?  
} > 3 JU  
int a = temp[l]; *Kt7"J  
int b = temp[r]; uqZLlP#&#  
for (i = l, j = r, k = l; k <= r; k++) { bl\44VK2'  
if (a < b) { $X5~9s1Wl  
data[k] = temp[i++]; 8aGZ% UI  
a = temp; MAR kTxzi  
} else { l1c&a[M)  
data[k] = temp[j--]; ,$3  
b = temp[j]; u*Oz1~  
} c%)uG _  
} [p@NzS/  
} 4:cbasy  
mU_?}}aK,  
/** QN-n9f8  
* @param data CzzG  
* @param l +nd'Uf   
* @param i lf|e8kU\f  
*/ oO @6c%  
private void insertSort(int[] data, int start, int len) { 'KQ]7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W<2%J)N<  
} uYL6g:]+ZC  
} )F? 57eh  
} P0Na<)\'Y!  
} !N,Z3p>Q  
`ea$`2  
堆排序: wRPBJ-C)  
UF<|1;'  
package org.rut.util.algorithm.support; *ILS/`mdav  
q30WUO;  
import org.rut.util.algorithm.SortUtil; T-&CAD3 ,O  
~N[hY1}X[  
/** CpS' 2@6  
* @author treeroot Beqhe\{  
* @since 2006-2-2 6Epns s  
* @version 1.0 =[{Pw8['  
*/ q22cp&gmX  
public class HeapSort implements SortUtil.Sort{ 5?;'26iC  
+nuv?QB/  
/* (non-Javadoc) { r&M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w^|,[G ^}H  
*/ CR934TE+  
public void sort(int[] data) { (%#d._j>fZ  
MaxHeap h=new MaxHeap(); ZX-9BJ`Q  
h.init(data); jT: :o  
for(int i=0;i h.remove(); (6+6]`c$  
System.arraycopy(h.queue,1,data,0,data.length); 8fM}UZI  
} @hzQk~Gdi  
`4}!+fXQ  
private static class MaxHeap{ Ynz^M{9)K  
10#!{].#x  
void init(int[] data){ Y1k/ngH  
this.queue=new int[data.length+1]; {]<D"x ;  
for(int i=0;i queue[++size]=data; GJO/']k  
fixUp(size); 8.pz?{**T  
} Wlg(z%  
} 1AE/ILGo  
+{hxEDz  
private int size=0; y^@% Xrs  
5.?O PK6  
private int[] queue; Y ga}8DU  
tEN]0`  
public int get() { o95O!5 hl  
return queue[1]; e!4akKw4wD  
} a+{g~/z;,Q  
,xD{A}}V  
public void remove() { jLQjv  
SortUtil.swap(queue,1,size--); e_1mO 5z  
fixDown(1); eU%5CVH.v  
} u/.s rK!K  
file://fixdown qh7o;x~,  
private void fixDown(int k) { "[[fQpe4@  
int j; e982IP  
while ((j = k << 1) <= size) { nrt0[E-&~  
if (j < size %26amp;%26amp; queue[j] j++; l42m81x"  
if (queue[k]>queue[j]) file://不用交换 e<9nt [  
break; o B6" D  
SortUtil.swap(queue,j,k); /#:RYM'Tu  
k = j; ?G?=,tV  
} 2M&4]d  
} K6Gc)jp:b  
private void fixUp(int k) { ,6M-xSDs  
while (k > 1) { ,j_{IL690  
int j = k >> 1; &us8,x6yg  
if (queue[j]>queue[k]) l m  
break; e-e{-pB6  
SortUtil.swap(queue,j,k); 5)nv  
k = j; }qKeX4\-  
} )D[ypuM&  
} BB%(!O4Dl  
(Wx)YI  
} 9d{W/t?NH  
=k$d8g ez  
} Q%eBm_r;  
^1~/FU  
SortUtil: /yykOvUO  
'|d (<.[  
package org.rut.util.algorithm; `%ENGB|  
O"#`i{^?2  
import org.rut.util.algorithm.support.BubbleSort; Q?"[zX1  
import org.rut.util.algorithm.support.HeapSort; /6q/`vx@  
import org.rut.util.algorithm.support.ImprovedMergeSort; E`?BaCrG~  
import org.rut.util.algorithm.support.ImprovedQuickSort; cEqh|Q  
import org.rut.util.algorithm.support.InsertSort; P);Xke  
import org.rut.util.algorithm.support.MergeSort; )K?GAj]Pq  
import org.rut.util.algorithm.support.QuickSort; ! 4oIx`  
import org.rut.util.algorithm.support.SelectionSort; 5t<]|-i!  
import org.rut.util.algorithm.support.ShellSort; #>- rKv.A  
dt \O7Rjw8  
/** <oXsn.'\  
* @author treeroot i3%~Gc63  
* @since 2006-2-2 ~qqtFjlG^  
* @version 1.0 J.nVEqLZ  
*/ xlwsZm{V  
public class SortUtil { 'I<j`)4`d  
public final static int INSERT = 1; L3GJq{t  
public final static int BUBBLE = 2; 'D/AL\1{p(  
public final static int SELECTION = 3; I !(yU  
public final static int SHELL = 4; ; zvnDox  
public final static int QUICK = 5; /y!Vs`PZ!  
public final static int IMPROVED_QUICK = 6; ,Tz ,)rY  
public final static int MERGE = 7; A0]o/IBz  
public final static int IMPROVED_MERGE = 8; Tb)x8-0  
public final static int HEAP = 9; OK)0no=OAK  
X,fTzkGj  
public static void sort(int[] data) { p|FX_4RjX  
sort(data, IMPROVED_QUICK); O#EBR<CuK  
} ZGbZu  
private static String[] name={ %om7h$D =`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E1C8yIF  
}; >WDpBn:  
u!-eP7;7  
private static Sort[] impl=new Sort[]{ 0*AlLwO  
new InsertSort(), ua[\npz5  
new BubbleSort(), !<LS4s;  
new SelectionSort(), X<QE]RZ  
new ShellSort(), J6%op{7/  
new QuickSort(), 2"MI8EK  
new ImprovedQuickSort(), 8;'n.SC{  
new MergeSort(), UA9LI<Y  
new ImprovedMergeSort(), K$]QzPXS  
new HeapSort() zh.c_>jS  
};  vXvV5Oq  
.Ep3~9TBW  
public static String toString(int algorithm){ -J30g\  
return name[algorithm-1]; FG H>;H@  
} Jzdc'3dq  
6~8 RFf"  
public static void sort(int[] data, int algorithm) { *]eZ Y  
impl[algorithm-1].sort(data); q kKABow  
} \l2 s^7G_  
y2U:( H:l!  
public static interface Sort { ?qbp  
public void sort(int[] data); ^~aSrREo  
} |pgkl`  
:L[6a>"neE  
public static void swap(int[] data, int i, int j) { I;v`o{  
int temp = data; OZ" <V^"`  
data = data[j]; Imw x~eo  
data[j] = temp; 8`t%QhE2  
} 0?7uqS#L  
} Vj]kJ,j\y  
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