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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。 gO_^{>2  
插入排序: SAly~(r?/  
024*IoVZ  
package org.rut.util.algorithm.support; RhX 2qsva-  
1b* dC;<  
import org.rut.util.algorithm.SortUtil; eAm7*2  
/** B3)#Ou2  
* @author treeroot Q Gn4AW_  
* @since 2006-2-2 q>!T*BQ  
* @version 1.0 ?AYI   
*/ g 9>p?XY  
public class InsertSort implements SortUtil.Sort{ Q]a5]:0  
=:o)+NE  
/* (non-Javadoc) _ 4Hf?m7z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &!KJrQ  
*/  YVD%GJ  
public void sort(int[] data) { .J&~u0g  
int temp; m S!/>.1[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tj{rSg7{  
} (:M6*RV  
} PY)C=={p  
} y#YCc{K [  
|'Ve75 W6u  
} \`|,wLgH  
\#G`$JD  
冒泡排序: ft:/-$&H  
+ +D(P=4hi  
package org.rut.util.algorithm.support; C @hnT<e  
QBai;p{  
import org.rut.util.algorithm.SortUtil; 2Xe2 %{  
d=N5cCqq  
/** _S@s  
* @author treeroot dpGaI  
* @since 2006-2-2 Hagj^8  
* @version 1.0 P8z+ +h  
*/ c\]h YKA  
public class BubbleSort implements SortUtil.Sort{ jk) V[7P  
|VaXOdD`&  
/* (non-Javadoc) "2Js[uf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g7_a8_  
*/ ~EE*/vX  
public void sort(int[] data) { q+|Dm<Ug  
int temp; [<8<+lH=P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )wSsxX7:  
if(data[j] SortUtil.swap(data,j,j-1); LW ntZ.  
} WoesE:NiR  
} "AUY+ LN  
} 2$\Du9+  
} P0}uTee  
TX*s T  
} j"}alS`-  
-%%2Pz0I  
选择排序: S WYiI  
&eK8v]|"W  
package org.rut.util.algorithm.support; 1u)I}"{W>  
JF24~Q4P  
import org.rut.util.algorithm.SortUtil; GMB%A  
5 F H#)  
/** VGq2ITg9eE  
* @author treeroot |CStw"Fog  
* @since 2006-2-2 c1jgBty  
* @version 1.0 (fY(-  
*/ j Dy  
public class SelectionSort implements SortUtil.Sort { pA1Tod  
FkKx~I:  
/* 4`!(M]u=  
* (non-Javadoc) 83)2c a  
* HQv#\Xi1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) olQ;XTa01F  
*/ iMJjWkk  
public void sort(int[] data) { Q 4_j`q  
int temp; M0"xDvQ  
for (int i = 0; i < data.length; i++) { d}ue/hdw  
int lowIndex = i; !63x^# kg  
for (int j = data.length - 1; j > i; j--) { IuB0C!'  
if (data[j] < data[lowIndex]) { kAf2g  
lowIndex = j; OG!^:OY  
} b[$l{RQ[?  
} <:>a51HBX  
SortUtil.swap(data,i,lowIndex); 6S<J'9sE  
} ;]vE"Mx$  
} \BUr2]  
CXvL`d"  
} 0j_`7<,:  
G#3 O^,m  
Shell排序: AdR}{:ia  
&kYg >X  
package org.rut.util.algorithm.support; NC@OmSR\0  
3QU<vdtr  
import org.rut.util.algorithm.SortUtil; ] 6M- s  
8]'qJ;E2  
/** NR^z!+oSR  
* @author treeroot PgxD?Oi8  
* @since 2006-2-2 ZIkXy*<(  
* @version 1.0 E3;[*ve  
*/ Lc0^I<Y  
public class ShellSort implements SortUtil.Sort{ lUUeM\  
\ec,=7S<Zf  
/* (non-Javadoc) %0$$tS +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }_:^&cT  
*/ j01#Wq_\fk  
public void sort(int[] data) { 7`|$uIM`  
for(int i=data.length/2;i>2;i/=2){ N[ z7<$$  
for(int j=0;j insertSort(data,j,i); Nt'(JAZ;  
} !imm17XQ\  
} e>z3 \4  
insertSort(data,0,1); Ef:.)!;jy  
} aj|I[65  
rpQB# Pz  
/** 2u/~#Rt&*  
* @param data j%#n}H  
* @param j Y u8a8p|  
* @param i Qpe&_.&RE  
*/ 'k{pWfn=<  
private void insertSort(int[] data, int start, int inc) { I+kDx=T !  
int temp; RxjC sjg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R'uM7,7  
} .FtW $Y~y  
} B9&"/tT  
} fnN"a Z  
jyb/aov  
} c7[|x%~  
^Z$%OM,  
快速排序: wm%9>mA%  
:{E;*v_!v  
package org.rut.util.algorithm.support; N~=p+Ow[H  
2$V]XSe  
import org.rut.util.algorithm.SortUtil; T&H[JQ/h  
*&Np;^~  
/** <w}YD @(f  
* @author treeroot "W?<BpV~@!  
* @since 2006-2-2 RLu y;z  
* @version 1.0 `b=?z%LuT  
*/ !iN=py  
public class QuickSort implements SortUtil.Sort{ 5Q;Fwtm  
+[<|TT  
/* (non-Javadoc) PO%Z.ol9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^i&sQQ( {  
*/ F.<sKQ&A  
public void sort(int[] data) { H~Xi;[{7  
quickSort(data,0,data.length-1); Rq-BsMX!A  
} sOhQu>gN  
private void quickSort(int[] data,int i,int j){ 5 ?~ ?8Hi  
int pivotIndex=(i+j)/2; rvgArFf}]  
file://swap h:\WW;s[B  
SortUtil.swap(data,pivotIndex,j); ]vo&NE  
9lbe[w @  
int k=partition(data,i-1,j,data[j]); ..`J-k  
SortUtil.swap(data,k,j); 1:h{( %`&  
if((k-i)>1) quickSort(data,i,k-1); se(ZiyHp  
if((j-k)>1) quickSort(data,k+1,j); q+<X*yC  
}pxMO? h$  
} ZCsL%(  
/** }F=scbpXj  
* @param data M S$^m2  
* @param i yAz`n[  
* @param j N/IDj2C4  
* @return IhoV80b  
*/ s ~c_9,JK  
private int partition(int[] data, int l, int r,int pivot) { FRqJ#yd]  
do{ do@`(f3 g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fG_.&!P  
SortUtil.swap(data,l,r); hfw$820y[  
} \Jq$!foYx  
while(l SortUtil.swap(data,l,r); ^x8*]Sz#x  
return l; "& h;\hL  
} <mN.6@*{  
0/z=G!z\  
} JDeG@N$  
hUN]Lm6M  
改进后的快速排序: =8:m:Y&|`G  
jYE<d&Cq  
package org.rut.util.algorithm.support; {/d<Jm:  
pm`BMy<5PU  
import org.rut.util.algorithm.SortUtil; x$ z9:'U  
!ZlBM{C  
/** Jm0o[4  
* @author treeroot .h O ) R.  
* @since 2006-2-2 /E8{:>2  
* @version 1.0 H&Jp,<\x  
*/ 2 u:w  
public class ImprovedQuickSort implements SortUtil.Sort { wtlIyE  
;n1< 1M>!  
private static int MAX_STACK_SIZE=4096; )%H@.;cD_r  
private static int THRESHOLD=10; _nW{Q-nh  
/* (non-Javadoc) =qG%h5]n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cXP*?N4C f  
*/ t6m&+N  
public void sort(int[] data) { {6}H}_( ]  
int[] stack=new int[MAX_STACK_SIZE]; \o}m]v i  
A9qbE  
int top=-1; 5A^$!q P  
int pivot; 3jH-!M5  
int pivotIndex,l,r; 3 ,;;C(  
od\-o:bS  
stack[++top]=0; a ;@G  
stack[++top]=data.length-1; 7tbM~+<0  
"%^T~Z(_j  
while(top>0){ sv}k_6XgY  
int j=stack[top--]; W>[0u3  
int i=stack[top--]; rZ[}vU/H`  
zX=K2tH  
pivotIndex=(i+j)/2; .%Pt[VQ  
pivot=data[pivotIndex]; 5MU-Eu|*>  
dZ]['y%  
SortUtil.swap(data,pivotIndex,j); e0rh~@E  
Qy< ~{6V  
file://partition ICq  
l=i-1; vq(ElXTO  
r=j; 9&]g2iT P  
do{  %<[?;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /4K ^-  
SortUtil.swap(data,l,r); B+)HDIPa-  
} G_m$W3 zS  
while(l SortUtil.swap(data,l,r); V!^5#A<  
SortUtil.swap(data,l,j); :&59N^So|  
VAGQR&T?  
if((l-i)>THRESHOLD){ Lmp_8q-Ej  
stack[++top]=i; YC,s]~[[   
stack[++top]=l-1; (tY0/s  
} .r=F'i}-j*  
if((j-l)>THRESHOLD){ b9 Gq';o  
stack[++top]=l+1;  }\ ^J:@  
stack[++top]=j; OH+kN /Fd  
} Lt 8J^}kwl  
YC,)t71l{  
} .eZsKc-@  
file://new InsertSort().sort(data); PRTn~!Z0  
insertSort(data); ePD~SO9*  
} '+8`3['  
/** 4n}tDHvd  
* @param data <,:p?36  
*/ "CH3\O\  
private void insertSort(int[] data) { L_ &`  
int temp; ^}VAH#c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ph5rS<  
} CN(}0/  
} [9c|!w^F  
} c}$C=s5 h}  
+c+i~5B4  
} j2dptM3t{  
Wjf,AjL\  
归并排序: J/T$.*X  
|:[ [w&R  
package org.rut.util.algorithm.support; IXA3G7$)  
V$OZC;4  
import org.rut.util.algorithm.SortUtil; ; fOkR+  
N A`qC.K   
/** 3$TU2-x;g  
* @author treeroot 0 UbY0sYo  
* @since 2006-2-2 p]lZ4#3  
* @version 1.0 2*[Gm e  
*/ JI5%fU%O#n  
public class MergeSort implements SortUtil.Sort{ OQ=0>;>  
p$S\l] ,  
/* (non-Javadoc) f[wA ]&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |L}1@0i  
*/ )0\"8}!  
public void sort(int[] data) { |``rSEXYs  
int[] temp=new int[data.length]; L9"yQD^R7?  
mergeSort(data,temp,0,data.length-1); 'Edm /+  
} D# Gf.c  
iCZuE:I1K,  
private void mergeSort(int[] data,int[] temp,int l,int r){ PKxI09B  
int mid=(l+r)/2; YU]|N 'mL2  
if(l==r) return ; zxD~W"R:s  
mergeSort(data,temp,l,mid); ~R+,4  
mergeSort(data,temp,mid+1,r); Dwx^hNh  
for(int i=l;i<=r;i++){ dm:2:A8^  
temp=data; dX^d\ wX  
} awC:{5R8v  
int i1=l; 3<"!h1x5  
int i2=mid+1; 1+Z@4;fk  
for(int cur=l;cur<=r;cur++){ cOa){&u  
if(i1==mid+1) x 8_nLZ  
data[cur]=temp[i2++]; *ydh.R<hb  
else if(i2>r) C)z?-f  
data[cur]=temp[i1++]; J^y}3ON  
else if(temp[i1] data[cur]=temp[i1++]; -u nK;  
else U)sw IisE  
data[cur]=temp[i2++]; %@ ,! (  
} ~'.SmXZs  
}  WBd$#V3  
uH.1'bR?a  
} ?LAiSg=eq  
eE0'3?q(  
改进后的归并排序: rm5@dM@  
3ss0/\3P  
package org.rut.util.algorithm.support; hN"cXz"/  
*K'_"2J  
import org.rut.util.algorithm.SortUtil; Cx[Cst `  
H'_v  
/** nQm (UN  
* @author treeroot d"nms\=p  
* @since 2006-2-2 +N>z|T<  
* @version 1.0 *~%QXNn`  
*/ :|z.F+-/  
public class ImprovedMergeSort implements SortUtil.Sort { =cwdl7N&I  
]fdxpqz  
private static final int THRESHOLD = 10; 25H=RTw  
CU+H`-+"J  
/* 86f8b{_e"  
* (non-Javadoc) <t"KNKI  
* .Y*jL&!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2E$K='H:,  
*/ v1aE[Q  
public void sort(int[] data) { x1'4njTV$  
int[] temp=new int[data.length]; C9VtRq  
mergeSort(data,temp,0,data.length-1); AcQmY?  
} IW$qP&a  
9\S,$A{{*  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,T;T %/ S  
int i, j, k; C.(<IcSG  
int mid = (l + r) / 2; zEMZz$Y  
if (l == r) \T:*tgU  
return; Id<O/C  
if ((mid - l) >= THRESHOLD) k"pN  
mergeSort(data, temp, l, mid); *a2-Vte  
else C lWxL#L6~  
insertSort(data, l, mid - l + 1); gnWEsA\!  
if ((r - mid) > THRESHOLD) G]k+0&X  
mergeSort(data, temp, mid + 1, r); 6Z>G%yK  
else `Re{j{~s  
insertSort(data, mid + 1, r - mid); dhCrcYn  
m> YjV>5  
for (i = l; i <= mid; i++) { (p!w`MSv  
temp = data; y py  
} =}OcMM`f  
for (j = 1; j <= r - mid; j++) { 3T)_(SM"  
temp[r - j + 1] = data[j + mid]; 5STk"  
} ["~T)d'  
int a = temp[l]; 8}.V[,]6  
int b = temp[r]; (/ e[n.T  
for (i = l, j = r, k = l; k <= r; k++) { Lz:Q6  
if (a < b) { N;|:Ks#!  
data[k] = temp[i++]; @@=e-d  
a = temp; *Kmo1>^  
} else { tpj6AMO/`d  
data[k] = temp[j--]; ;4Wz0suf  
b = temp[j]; v"8i2+j  
} EHF dQ0gIa  
} Qk?J4 B  
} n>L24rL  
3ahbv%y  
/** 5}|bDJ$%_  
* @param data I2^@>/p8\(  
* @param l 'X P  
* @param i S '(K  
*/ SG{&2G  
private void insertSort(int[] data, int start, int len) { B{2WvPX~q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v:zKn[;o  
} V:h3F7  
} C)(/NGf  
} nPg,(8Tt  
} `-yiVUp1:z  
-Zfq:Kr  
堆排序: 5XF&yYWq  
B"3uuk8  
package org.rut.util.algorithm.support; * amZ  
30<3DA_P  
import org.rut.util.algorithm.SortUtil; }:1*@7eR  
 +OeoA{-W  
/** kB]?95>Wx  
* @author treeroot @s8wYcW  
* @since 2006-2-2 ot; ]?M  
* @version 1.0 3dB{DuQ  
*/ |TRl >1rv  
public class HeapSort implements SortUtil.Sort{ wak`Jte=}m  
CJf4b:SY@  
/* (non-Javadoc) fK; I0J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jUCDf-_ m  
*/ -5u. Ix3  
public void sort(int[] data) { PD`EtkUnv  
MaxHeap h=new MaxHeap(); M2piJ'T4u  
h.init(data); dhmrh5Uf  
for(int i=0;i h.remove(); \(`,z}Ht _  
System.arraycopy(h.queue,1,data,0,data.length); k!ac_}&NNv  
} sUN9E4  
XEb+Z7L1  
private static class MaxHeap{ T&u25"QOf  
6r}w  
void init(int[] data){ ?V$@2vBVX4  
this.queue=new int[data.length+1]; :r+F95e  
for(int i=0;i queue[++size]=data; 5@yBUwMSj  
fixUp(size); sZ%wQqy~k  
} {PS|q?  
} \$Aw[ 5&t  
m4 :"c"  
private int size=0; M6:$ 0(r  
CooOBk  
private int[] queue; F0tx.]uS  
a~A"uLBR  
public int get() { m:5x"o7)ln  
return queue[1]; vg-'MG  
}  Dac ,yW  
tW=oAy  
public void remove() { t&nK5p95(  
SortUtil.swap(queue,1,size--); b0h>q$b  
fixDown(1); `V=F>s$W  
} R:Tv'I1-L  
file://fixdown R0bWI`$Z  
private void fixDown(int k) { ^9`~-w  
int j; -MuKeCgi  
while ((j = k << 1) <= size) { ~5 e 1&  
if (j < size %26amp;%26amp; queue[j] j++; q|S,^0cU  
if (queue[k]>queue[j]) file://不用交换 f1X]zk(=W  
break; U~_G *0  
SortUtil.swap(queue,j,k); ?Suv.!wfLl  
k = j; E#/vgm=W;  
} (&xIB F_6  
} tN-B`d 1  
private void fixUp(int k) { 7-2,|(Xg  
while (k > 1) { <-N7Skkk!  
int j = k >> 1; 'aJm4W&j  
if (queue[j]>queue[k]) wY_! s Qo  
break; }080=E  
SortUtil.swap(queue,j,k); v.{I^=  
k = j; uV\~2#o$_  
} f\c%G=y  
} b_GAK  
;0;5+ J7  
} #r;uM+  
Rkh ^|_<!  
} cPg$*,]  
k*o>ZpjNH  
SortUtil: {!37w[s~  
7 ^n{BsN  
package org.rut.util.algorithm; jU_#-<'r  
L; 'C5#GN  
import org.rut.util.algorithm.support.BubbleSort; ?v$1 Fc55  
import org.rut.util.algorithm.support.HeapSort; [A46WF>L  
import org.rut.util.algorithm.support.ImprovedMergeSort; [K#pU:lTH  
import org.rut.util.algorithm.support.ImprovedQuickSort; W24n%Ps  
import org.rut.util.algorithm.support.InsertSort; ge!Asm K  
import org.rut.util.algorithm.support.MergeSort; GL'zNQP-  
import org.rut.util.algorithm.support.QuickSort; * Fz#x{zt  
import org.rut.util.algorithm.support.SelectionSort; Ufv0Xj  
import org.rut.util.algorithm.support.ShellSort; (qg~l@rf  
</33>Fu)  
/** ( Y)a`[B  
* @author treeroot n_1,-(t  
* @since 2006-2-2 zJT,Hv .  
* @version 1.0 cDqj&:$e  
*/ 66MWOrr  
public class SortUtil { 0]MI*s>&  
public final static int INSERT = 1; Su/}OS\R  
public final static int BUBBLE = 2; THHA~;00YN  
public final static int SELECTION = 3; w$FN(BfA  
public final static int SHELL = 4; >&l{_b\k  
public final static int QUICK = 5; K])| V  
public final static int IMPROVED_QUICK = 6; 0uO<7IW9  
public final static int MERGE = 7; -`d(>ok  
public final static int IMPROVED_MERGE = 8; *D;VZs0O  
public final static int HEAP = 9; \aB"D=P\ok  
<n)R?P(or  
public static void sort(int[] data) { ]]lM)  
sort(data, IMPROVED_QUICK); SCKpW#2dP{  
} hsHtLH+@  
private static String[] name={ NK|m7 (  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *tL1t\jY  
}; +<W8kb  
]_&pIBp  
private static Sort[] impl=new Sort[]{ tqT-9sEXX.  
new InsertSort(), .aE%z/@s=  
new BubbleSort(), >TddKR @C  
new SelectionSort(), Fa A7m  
new ShellSort(), GN ?1dwI  
new QuickSort(), qwDoYy yu  
new ImprovedQuickSort(), A3mSSc6  
new MergeSort(), kG|pM54:^  
new ImprovedMergeSort(), atWB*kqI  
new HeapSort() ;+4X<)y*>  
}; ?KtvXTy{m  
<nE|Y@S  
public static String toString(int algorithm){ {#J1D*?$"  
return name[algorithm-1]; "RMvWuNt  
} Cd51. Sk(l  
,Z p9,nf  
public static void sort(int[] data, int algorithm) { :R9 DJh\  
impl[algorithm-1].sort(data); /7-qb^V  
} AlQ  
:h)A/k_  
public static interface Sort { @AAkEWo)_  
public void sort(int[] data); 1PdxoRa4=  
} o;M-M(EZQ6  
f+D a W  
public static void swap(int[] data, int i, int j) { 8et.A  
int temp = data; TLiA>`r=  
data = data[j]; B#9T6|2  
data[j] = temp; ky98Bz%  
} {;j@-=pV  
} _=68iDXm  
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