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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。 6n;? :./  
插入排序: Qjd]BX;  
Zy|u5J  
package org.rut.util.algorithm.support; f ~bgZ  
P0RtS1A  
import org.rut.util.algorithm.SortUtil; >Bu _NoM  
/** wxN&k$`a  
* @author treeroot `|PhXr  
* @since 2006-2-2 NN5G '|i  
* @version 1.0 0Hx'C^m72  
*/ 5RP5%U  
public class InsertSort implements SortUtil.Sort{ E,fbIyX  
qTN30(x2  
/* (non-Javadoc) +O)ZB$w4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a5&[O  
*/ ?O"zp65d(  
public void sort(int[] data) { ^gkKk&~A5?  
int temp; e7tio!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b}*q*Bq  
} 5=Y(.}6  
} ,(]k)ym/  
} .KtK<Ps[S  
wL}X~Xa3i  
} D={$l'y9p  
],vid1E  
冒泡排序: ~6+Um_A_L  
c:+UC  
package org.rut.util.algorithm.support; b`ksTO`}x  
HBs 6:[q  
import org.rut.util.algorithm.SortUtil; `R!2N4|;  
FEX67A8 /;  
/** y|NY,{:]  
* @author treeroot W@i|=xS?  
* @since 2006-2-2 MO|Pv j~[  
* @version 1.0 0#ON}l)>  
*/ J(A+mYr{:  
public class BubbleSort implements SortUtil.Sort{ J% ZM V  
$ e.Bz `  
/* (non-Javadoc) a54S,}|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {bG.X?b  
*/ xk3)#*  
public void sort(int[] data) { qQ1D}c@  
int temp; Q.\vN-(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "!uS!BI?  
if(data[j] SortUtil.swap(data,j,j-1); kWs:7jiiu  
} iRqLLMrn  
} R]RLy#j  
} SR`A]EC(V  
} d*=qqe H  
#WGyQ u  
} \Ym!5,^o  
AP8J28I  
选择排序: ylDfr){  
@}uo:b:Q  
package org.rut.util.algorithm.support; 8#9OSupp  
Cv/3-&5S  
import org.rut.util.algorithm.SortUtil; ;Wsl 'e/  
]\]mwvLT  
/** ]mjKF\  
* @author treeroot .'4@Yp{=  
* @since 2006-2-2 e@& 2q{Gi=  
* @version 1.0 Z-M4J;J@}  
*/ Hl*#iUq  
public class SelectionSort implements SortUtil.Sort { lTFo#p_(  
ABL5T-*]  
/* 7M_GGjP  
* (non-Javadoc) )Y"t$Iw"  
* `6LV XDR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G^SDB!/@J  
*/ NE3/>5  
public void sort(int[] data) { )bpdj,  
int temp; AgB$ w4  
for (int i = 0; i < data.length; i++) { r5+ MjR  
int lowIndex = i; %o`Cp64`Q  
for (int j = data.length - 1; j > i; j--) { sDu&9+  
if (data[j] < data[lowIndex]) { +vPCr&40  
lowIndex = j; =#wE*6T9  
} Ri}JM3\J  
} Uo[`AzD3  
SortUtil.swap(data,i,lowIndex); ]iZ-MG)J  
} Q8h=2YL  
} 9WHarv2@  
3E>]6  
} [|YJg]i-  
H>"P]Y)oX  
Shell排序: !\5)!B  
3wfJ!z-E8  
package org.rut.util.algorithm.support; $N|Spp0  
zE7)4!  
import org.rut.util.algorithm.SortUtil; EJJ&`,q  
B*^QTJ  
/** L:jv%;DM  
* @author treeroot N ]GF>kf:  
* @since 2006-2-2 cCIs~*D  
* @version 1.0 dbF9%I@  
*/ 5j _[z|W2  
public class ShellSort implements SortUtil.Sort{ J`wx72/-ZW  
"L9pFz</  
/* (non-Javadoc) U]ZI_[\'U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \tdYTb.  
*/ ^Nysx ~6  
public void sort(int[] data) { "tj]mij2)G  
for(int i=data.length/2;i>2;i/=2){ fvG4K(  
for(int j=0;j insertSort(data,j,i); u:,B&}j  
} : %U lNk  
} w2K>k/v{-  
insertSort(data,0,1); 6*I=% H|  
} t3!~=U  
nzU0=w}V  
/** 59?$9}ob  
* @param data 9FF  
* @param j ^a#W|-:  
* @param i '2{60t_A  
*/ ntZHO}'  
private void insertSort(int[] data, int start, int inc) { j3>&Su>H4  
int temp; 8Z 0@-8vi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R]o2_r7N"}  
} q-e3;$  
} CZ(fP86e  
} T\Jm=+]c!  
Owh:(EJ"d  
} Tb] h<S  
\x"BgLSE  
快速排序: \JNWL yw  
K{FBrh  
package org.rut.util.algorithm.support; ]_4HtcL4  
,~NJ}4wP  
import org.rut.util.algorithm.SortUtil; .;&4'ga4  
i^rHZmT  
/** 5[^Rf'wy  
* @author treeroot mrlhj8W?!  
* @since 2006-2-2 tpP68)<ns  
* @version 1.0 w}x&wWM  
*/ [Fr <tKtB  
public class QuickSort implements SortUtil.Sort{ }jg,[jw_"X  
>E>'9@Uh  
/* (non-Javadoc) 6h\; U5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sT91>'&  
*/ 5J3K3  
public void sort(int[] data) { >~T2MlRux  
quickSort(data,0,data.length-1); MnptC 1N  
} ,4(m.P10  
private void quickSort(int[] data,int i,int j){ WX $AOnEv  
int pivotIndex=(i+j)/2; :/;;|lGw  
file://swap MhN 8'y(  
SortUtil.swap(data,pivotIndex,j); )U{IQE;T#  
\Zn~y--Z  
int k=partition(data,i-1,j,data[j]); Ystd[  
SortUtil.swap(data,k,j); `V?NS,@$  
if((k-i)>1) quickSort(data,i,k-1); ")W5`9  
if((j-k)>1) quickSort(data,k+1,j); =8 DS~J{  
Oq 95zo  
} !Eb!y`jK  
/** ul\FZT 4  
* @param data @$?*UI6y  
* @param i F4g3l    
* @param j ~JOC8dO  
* @return 0|(6q=QK  
*/ _No<fz8  
private int partition(int[] data, int l, int r,int pivot) { /? Bu^KX  
do{ A&Cs (e  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z'c9xvy5  
SortUtil.swap(data,l,r); @u8kNXT;h  
} %v]-:5g'|  
while(l SortUtil.swap(data,l,r); &lB>G[t  
return l; +)7h)uq  
} F>5)Clq  
<ceJ!"L  
} p%e/>N.P  
a,[NcdG  
改进后的快速排序: N\x<'P4q  
P)UpUMt;k  
package org.rut.util.algorithm.support; l,j0n0h.  
KocNJ TB  
import org.rut.util.algorithm.SortUtil; fyv S1_  
/qXP\ a  
/** E_K32) J-  
* @author treeroot z HvW@A'F  
* @since 2006-2-2 7:OF>**  
* @version 1.0 ZZW%6-B  
*/ hj3wxH.}  
public class ImprovedQuickSort implements SortUtil.Sort { iD:T KB_r  
8{p#Nl?U1  
private static int MAX_STACK_SIZE=4096; }M9I]\  
private static int THRESHOLD=10; (vbI4&r  
/* (non-Javadoc) Dfd%Z;Yu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4I;$a;R!  
*/ u:\DqdlU`  
public void sort(int[] data) { {uiL91j.  
int[] stack=new int[MAX_STACK_SIZE]; v79\(BX  
<*djtO  
int top=-1; wUmcA~3D  
int pivot; xc$jG?83#  
int pivotIndex,l,r; wmit>69S  
m?`$NJST  
stack[++top]=0; r7  *'s  
stack[++top]=data.length-1; _Ns_$_  
6$p6dmV|  
while(top>0){ M}9PicI?7  
int j=stack[top--]; Rhh.fV3  
int i=stack[top--]; Mog!pmc{  
Y!_e ,]GW  
pivotIndex=(i+j)/2; 2QV|NQSl  
pivot=data[pivotIndex]; /U"3LX  
5f#]dgBe  
SortUtil.swap(data,pivotIndex,j); DbK-3F_  
^1[u'DW4  
file://partition 6 kAXE\T  
l=i-1; [u/Wh+  
r=j; fMRMQR=6B  
do{ W/<C$T4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 93y!x}  
SortUtil.swap(data,l,r); lhJZPnx~  
} 'V:ah3 8  
while(l SortUtil.swap(data,l,r); /??nO Vvt  
SortUtil.swap(data,l,j); FeuqqZ\=&  
<0H^2ekd  
if((l-i)>THRESHOLD){ F2mW<REg{  
stack[++top]=i; 6 Y}Bza  
stack[++top]=l-1; etH]-S  
} 7.C~ OrGR  
if((j-l)>THRESHOLD){ (/Dr=D{ `  
stack[++top]=l+1; SR { KL#NC  
stack[++top]=j; Bl v @u?  
} LW+^m6O  
hN.{H:skL)  
} lNqF@eCT9  
file://new InsertSort().sort(data); CWM_J9f  
insertSort(data); wnbKUlb  
} |j7{zsH  
/** 0uf)6(f  
* @param data 0-zIohSJdQ  
*/ lag%} ^  
private void insertSort(int[] data) { 47 9yG/+\  
int temp; 5U%a$.yr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9Zpd=m8dU  
} O\)rp!i  
} A\~tr   
} T &kr IZw  
R]Pv=fn  
} VeWvSIP,EQ  
PkxhR;4  
归并排序: r WPoR/M  
x<[W9Z'~?9  
package org.rut.util.algorithm.support; 0]`%i G|  
Y` tB5P  
import org.rut.util.algorithm.SortUtil; WhN~R[LE_  
BFMINq>  
/** CqbPUcK  
* @author treeroot OqA#4h4^  
* @since 2006-2-2 :LBRyBV  
* @version 1.0 aak[U;rx  
*/ }`$Sr&n 1  
public class MergeSort implements SortUtil.Sort{ RJT=K{2x  
S(h+,+289  
/* (non-Javadoc) \>r<z46x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %v 1NDhaXz  
*/ 8yn}|Y9Fu  
public void sort(int[] data) { =$awUy  
int[] temp=new int[data.length]; g:CMIe4  
mergeSort(data,temp,0,data.length-1); ekhx?rz  
} X\'+);Z  
W&8)yog.  
private void mergeSort(int[] data,int[] temp,int l,int r){ cAc>p-y%  
int mid=(l+r)/2; N?krlR  
if(l==r) return ; @F0+t;  
mergeSort(data,temp,l,mid); rP7f~"L  
mergeSort(data,temp,mid+1,r); @b"J FB|  
for(int i=l;i<=r;i++){ 2/V9Or 52  
temp=data; ![4<6/2gy  
} ) v^;"q"  
int i1=l; qx<h rC0Z&  
int i2=mid+1; \-~TW4dYe  
for(int cur=l;cur<=r;cur++){ Uk|(VR9  
if(i1==mid+1) @XFy^?  
data[cur]=temp[i2++]; r__Y{&IO  
else if(i2>r) *&lNzz5&  
data[cur]=temp[i1++]; %vFoTu)2  
else if(temp[i1] data[cur]=temp[i1++]; i$!-mYi+Q!  
else kA%"-$3  
data[cur]=temp[i2++]; CP!>V:w%9!  
} $d _%7xx  
} E8s&.:;+  
U<H< !NV  
} yCT:U&8%F  
U4ELlxGe  
改进后的归并排序: eW^_YG%(  
MC&sM-/  
package org.rut.util.algorithm.support; ;OynkZs)  
Y]gb`z$?  
import org.rut.util.algorithm.SortUtil; sM$gfFx  
l2LUcI$ x  
/** a+Z95~*sZ"  
* @author treeroot ?A7_&=J%  
* @since 2006-2-2 # ^~[\8v>  
* @version 1.0 N++jI(  
*/ (:2,Rr1"  
public class ImprovedMergeSort implements SortUtil.Sort { `cBV+00YS  
m?Qr)F_M  
private static final int THRESHOLD = 10; OfSHZ;,  
<"Cacf g  
/* WYklS<B[  
* (non-Javadoc) ]5}C@W@_  
* 251^>x.R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DYKJVn7w  
*/ 'Bv)UfZ  
public void sort(int[] data) { \E3e vU  
int[] temp=new int[data.length]; !9knF t43  
mergeSort(data,temp,0,data.length-1); k{q4Zz[  
} <i(<|/ $  
io{uN/!X_J  
private void mergeSort(int[] data, int[] temp, int l, int r) { Vx6/Rehj  
int i, j, k; B5Y 3GWhrx  
int mid = (l + r) / 2; {2Jn#&Z29  
if (l == r) D-<9kBZs  
return; (d2|r)O  
if ((mid - l) >= THRESHOLD) &hb:~>  
mergeSort(data, temp, l, mid); Ow\dk^\-G8  
else ZH<:YOQ  
insertSort(data, l, mid - l + 1); )|?s!rw +  
if ((r - mid) > THRESHOLD) *6trK`tx^  
mergeSort(data, temp, mid + 1, r); /X_g[*]?  
else `pzXh0}|  
insertSort(data, mid + 1, r - mid); H=j&uv8  
DZI:zsf;5Q  
for (i = l; i <= mid; i++) { |3A/Og  
temp = data; a*Oc:$  
} r)G^V&96  
for (j = 1; j <= r - mid; j++) { tgPx!5U  
temp[r - j + 1] = data[j + mid]; Y]SX2kk(2  
} ~Yw`w 2  
int a = temp[l]; ZFAi9M  
int b = temp[r]; ,@1.&!F4it  
for (i = l, j = r, k = l; k <= r; k++) { "+6:vhP5  
if (a < b) { W+C@(}pt  
data[k] = temp[i++]; "V;5Lp b  
a = temp; feH|sz`e  
} else { }Ra'`;D$  
data[k] = temp[j--]; }yfSF|\  
b = temp[j]; !F_BLHig  
} DFKumw>!  
} y,D4b6  
} 6:v$g  
i,Q{Z@,  
/** }  :@s  
* @param data >K2Md*[P3q  
* @param l (\UA+3$4  
* @param i YGj3W.eH  
*/ ^/<0r] =  
private void insertSort(int[] data, int start, int len) { 3k J8Wn  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dDAI fe2y  
} VQQtxHTC3  
} `T gwa  
} dBKceL v  
} ;%j1'VI  
^\z.E?v%  
堆排序: <{"]&bl  
El}."}l&  
package org.rut.util.algorithm.support; =D2jJk?AX  
.9<  i  
import org.rut.util.algorithm.SortUtil; Ie[8Iot?bn  
tCJ+OU5/  
/** FOFZ/q  
* @author treeroot /NH9$u.g  
* @since 2006-2-2 $&@L[[xl  
* @version 1.0 19u'{/Y"  
*/ LvsNU0x  
public class HeapSort implements SortUtil.Sort{ =X0"!y"  
YM idSfi  
/* (non-Javadoc) %YI Xk1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = 2 3H/  
*/ CO` %eL ~  
public void sort(int[] data) { V?a+u7*U&  
MaxHeap h=new MaxHeap(); X_}2xo|T  
h.init(data); UKBVCAK  
for(int i=0;i h.remove(); }w0>mA0=H  
System.arraycopy(h.queue,1,data,0,data.length); xMAfa>]{n  
} Iq@:n_~  
ZZ<uiN$  
private static class MaxHeap{ 5w\>Whbd  
LG0z|x(  
void init(int[] data){ [84f[`!Ui  
this.queue=new int[data.length+1]; 1@j0kTJ~m  
for(int i=0;i queue[++size]=data; c Bl F  
fixUp(size); o Q!56\R  
} D{]t50a.  
} &vf%E@<  
+wAH?q8f  
private int size=0; v[r5!,F  
1 h.=c  
private int[] queue; )}-,4Iu%  
&B</^:  
public int get() { S}/?L m}  
return queue[1]; ?Mb 'l4  
} *nv%~t   
L"w% ew  
public void remove() { L8&$o2+07r  
SortUtil.swap(queue,1,size--); '.sS"QdN  
fixDown(1); I.f)rMl+h  
} +J^-B}v  
file://fixdown z$VA]tI(  
private void fixDown(int k) { yEnurq%J  
int j; 5Iv3B|u  
while ((j = k << 1) <= size) { 2{v$GFc/  
if (j < size %26amp;%26amp; queue[j] j++; TTS.wBpR,  
if (queue[k]>queue[j]) file://不用交换 %>dCAj"  
break; }/ p>DMN  
SortUtil.swap(queue,j,k); 9t.u9C=!F  
k = j; qP"+SVqC  
} DS@ZE Q`F  
} lG\6z"K  
private void fixUp(int k) { tSr.0'CE  
while (k > 1) { )%4%Uo_Xm  
int j = k >> 1; ,cbCt  
if (queue[j]>queue[k]) HC4vet  
break; Svs!C+:le  
SortUtil.swap(queue,j,k); ?R  4sH  
k = j; =*VKp{5=  
} 4,8=0[eRG  
} N3D{t\hg  
)jM' x&Vg  
} X=i^[?C  
e/pZLj]M  
} tevB2'3^  
PdUlwT? 8C  
SortUtil: :x36^{7  
 p)5j~Nl  
package org.rut.util.algorithm; W| z djb  
Zc_%hQf2A  
import org.rut.util.algorithm.support.BubbleSort; i8F^ N=  
import org.rut.util.algorithm.support.HeapSort; kZ&|.q1zki  
import org.rut.util.algorithm.support.ImprovedMergeSort; cmpT_51~O  
import org.rut.util.algorithm.support.ImprovedQuickSort;  q q%\  
import org.rut.util.algorithm.support.InsertSort; P}] xz Vy  
import org.rut.util.algorithm.support.MergeSort; HN/ %(y  
import org.rut.util.algorithm.support.QuickSort; v"y0D  
import org.rut.util.algorithm.support.SelectionSort; 0b )^#+  
import org.rut.util.algorithm.support.ShellSort; h]wahExYP  
]SqLF!S(=  
/** ,]1oG=`3v  
* @author treeroot ^sLnKAN  
* @since 2006-2-2 Md~% e'  
* @version 1.0 Q\pTyNAYn  
*/ =Kq/E De  
public class SortUtil { }ze,6T*z  
public final static int INSERT = 1; cQ= "3M)~r  
public final static int BUBBLE = 2; RTPxAp+\5  
public final static int SELECTION = 3; ::k>V\;  
public final static int SHELL = 4; ra="4T$va  
public final static int QUICK = 5; WE_jT1^/  
public final static int IMPROVED_QUICK = 6; 8VbHZ9Q  
public final static int MERGE = 7; V-#OiMWa~  
public final static int IMPROVED_MERGE = 8; *Y4h26  
public final static int HEAP = 9; I9sx*'  
C$9+p@G6  
public static void sort(int[] data) { ,QDS_u$xi&  
sort(data, IMPROVED_QUICK); r-27AJu  
} LaI(  
private static String[] name={ /%El0X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .T*K4m{b0  
}; :6~DOvY  
O}4(v#  
private static Sort[] impl=new Sort[]{ 7MRu=Z.-b  
new InsertSort(), Gi7jgv{{  
new BubbleSort(), 9ghZL Q  
new SelectionSort(), 3~zK :(  
new ShellSort(), ~]+-<O^U~  
new QuickSort(), }LXS!Ff:  
new ImprovedQuickSort(), 3=6`'PKRQ  
new MergeSort(), I) mP ?  
new ImprovedMergeSort(), mcbr3P  
new HeapSort() ds@w=~  
}; ~VNN  
64qm  
public static String toString(int algorithm){ -P|EV|8=  
return name[algorithm-1]; oV4+w_rrLc  
} S >E|A %  
Y)?dq(  
public static void sort(int[] data, int algorithm) { "`b"PQ<x  
impl[algorithm-1].sort(data); n5nV4 61U  
} @,Je*5$o"  
#41fRmzC  
public static interface Sort { HPc7Vo(  
public void sort(int[] data); deD%E-Ja  
} r"yA=d'c  
JsNqijVC  
public static void swap(int[] data, int i, int j) { F[q:jY  
int temp = data; ye-o'%{  
data = data[j]; ^P5+ _P  
data[j] = temp; jy=dB-&  
} #[.vfG  
} w]Q0}Z  
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