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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。 P4 6,o  
插入排序: rBfg*r`)  
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package org.rut.util.algorithm.support; 6mHhC?  
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import org.rut.util.algorithm.SortUtil; W4vBf^eC  
/** w1i?# !|  
* @author treeroot *P xf#X  
* @since 2006-2-2 y<M]dd$  
* @version 1.0 [Vp\$;\nT  
*/ I?M@5u  
public class InsertSort implements SortUtil.Sort{ fl)zQcA  
zs8I  
/* (non-Javadoc) 6LM9e0oxy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fU ={a2  
*/ @?a4i  
public void sort(int[] data) { %nQmFIt  
int temp; a))*F!}c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H,|YLKg-|  
} nh;y:Bi  
} SqqDV)Uih1  
} >'Hx1;  
or.\)(m#(  
} f_'"KF[%  
}Vl^EAR  
冒泡排序: 0b++ 17aV  
;)|nkI  
package org.rut.util.algorithm.support; KN, 4@4  
hr~.Lj5^W  
import org.rut.util.algorithm.SortUtil; UABbcNW  
!. eAOuq  
/** b1)\Zi  
* @author treeroot }`]]b+_b>@  
* @since 2006-2-2 K~@`o-Z[  
* @version 1.0 **HrWM%?8o  
*/ ~`[8"YUL  
public class BubbleSort implements SortUtil.Sort{ !gJzg*{u@  
BS.=  
/* (non-Javadoc) XtzOFx/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +{*)}[w{x  
*/ y@ .b 4  
public void sort(int[] data) { UR,?!rJ^B  
int temp; }.t^D|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z Lw(@&  
if(data[j] SortUtil.swap(data,j,j-1); W5X7FEW  
} ArX]L$ D  
} cNeiD@t3V&  
} [yF^IlSs  
} !ew6 n I  
1tyNRoET  
} GGM5m|4  
WKOI\  
选择排序: WG\Q5k4Ba  
-R8/`M8GbD  
package org.rut.util.algorithm.support; B!iFmkCy  
C[0MA ,^  
import org.rut.util.algorithm.SortUtil; QA,*:qx  
pU@YiwP"]x  
/** DZ2Fl>7  
* @author treeroot 6kR -rA  
* @since 2006-2-2 l.uN$B  
* @version 1.0 SdSgn|S  
*/ +K&?)?/=  
public class SelectionSort implements SortUtil.Sort { 9BO|1{  
?(>k,[n  
/* Wt"ww~h`(  
* (non-Javadoc) T;J7+0  
* ;/R kMS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8XlU%a6x  
*/ y,V6h*x2  
public void sort(int[] data) {  d~sJ=)  
int temp; "&Gw1.p  
for (int i = 0; i < data.length; i++) { @wMQC\Z  
int lowIndex = i; Ej{+U  
for (int j = data.length - 1; j > i; j--) { r(]98a]o~  
if (data[j] < data[lowIndex]) { G LoiH#R  
lowIndex = j; aU4R+.M7@  
} 7oD y7nV4  
} o:H'r7N  
SortUtil.swap(data,i,lowIndex); f&f`J/(  
} C/bxfp{?  
} }\>+H  
^]i" H|(x  
} #s*k| j}  
& \JLTw  
Shell排序: $.``OxJk%  
LNaeB(z"  
package org.rut.util.algorithm.support; +)?,{eE|  
WFRsSp2  
import org.rut.util.algorithm.SortUtil; ?vMK'"  
1E8$% 6VV  
/** g ,`F<CF9  
* @author treeroot - Sx0qi'%  
* @since 2006-2-2 re]%f"v:5  
* @version 1.0 akMJ4EF/  
*/ J9NsHr:A[  
public class ShellSort implements SortUtil.Sort{ q)NXyy4BT  
?n2C  
/* (non-Javadoc) l +|1G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bAN10U  
*/ 0,:iE\  
public void sort(int[] data) { Pb0)HlLq  
for(int i=data.length/2;i>2;i/=2){ EK^JLvyT  
for(int j=0;j insertSort(data,j,i); I; ^xAd3G  
} P a3{Ds  
} 3(MoXA*  
insertSort(data,0,1); :sU!PF[<  
} xT:qe  
_MGNKA6JI  
/** W&HF?w}s  
* @param data b*cW<vX}~  
* @param j ]gH wfqx  
* @param i 5BrU'NF  
*/ ,m2A p\l  
private void insertSort(int[] data, int start, int inc) { 7We?P,A\;  
int temp; MKV=m8G=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d#E(~t(^  
} c]GQU  
} $$k7_rs  
} ;+TMx(  
>Kz_My9  
} iU.!oeR?  
lq;  
快速排序: ll^Th >  
-kWO2  
package org.rut.util.algorithm.support; fx]\)0n  
@~JB\j9  
import org.rut.util.algorithm.SortUtil; P h9Hg'  
d-9uv|SJ  
/** Mr$# e  
* @author treeroot J@oEV=L  
* @since 2006-2-2 eV"dv*R  
* @version 1.0 GwTT+  
*/ T+`xr0  
public class QuickSort implements SortUtil.Sort{ m"96:v  
l0qdk #v  
/* (non-Javadoc) b7?U8/#'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x, G6\QmA  
*/ &?P=arU  
public void sort(int[] data) { s/r5,IFR  
quickSort(data,0,data.length-1); D+bB G  
} 9V|E1-")E  
private void quickSort(int[] data,int i,int j){ +P>Gy`D9  
int pivotIndex=(i+j)/2; 8 m%>:}o  
file://swap SQ1M4:hP  
SortUtil.swap(data,pivotIndex,j); Mfnlue](  
KC@k9e  
int k=partition(data,i-1,j,data[j]); .OVW4svX  
SortUtil.swap(data,k,j); \(.nPW]9  
if((k-i)>1) quickSort(data,i,k-1); ZA *b9W  
if((j-k)>1) quickSort(data,k+1,j); F{#N6,T  
 ioE66-n  
} bBkm]  >  
/** b@nri5noBm  
* @param data `_NnQ%  
* @param i 4e=/f,o1  
* @param j LydbP17K}  
* @return dzjBUD  
*/ $nUd\B$.=  
private int partition(int[] data, int l, int r,int pivot) { +-Z"H)  
do{ F/Rng'l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y3 ({(URU  
SortUtil.swap(data,l,r); {] t\`fjrg  
} Hs:4I  
while(l SortUtil.swap(data,l,r); yt/20a  
return l; Wrf^O2  
} YtwmlIar`  
|i,zY{GI+2  
} `c qH}2s#  
jMm_A#V>p  
改进后的快速排序: ]FY?_DGOA  
)64LKb$  
package org.rut.util.algorithm.support; 5PPPd-'Z_  
_aXP ;kFMi  
import org.rut.util.algorithm.SortUtil; w0a+8gexi  
Bi9 N  
/** C:'WX*W  
* @author treeroot s)=!2AY  
* @since 2006-2-2 Zd[y+$>  
* @version 1.0 n9<roH  
*/ 8! |.H p  
public class ImprovedQuickSort implements SortUtil.Sort { 1S*8v 7  
aH5t.x79b  
private static int MAX_STACK_SIZE=4096; o 1 hdO  
private static int THRESHOLD=10; w%i+>\tO  
/* (non-Javadoc) ^]#Ptoz^(l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1=9qAp;?o  
*/ ;#5-.z  
public void sort(int[] data) { TnvHO_P,  
int[] stack=new int[MAX_STACK_SIZE]; ^D ]7pe  
?J^IAF y  
int top=-1; j:rs+1bc  
int pivot; ~.PPf/ Z8]  
int pivotIndex,l,r; %8Z|/LGg  
eeI9[lTw  
stack[++top]=0; U(S@1i(  
stack[++top]=data.length-1; )[y!m9Vn  
E>l#0Zw  
while(top>0){ ),D`ZRXS  
int j=stack[top--]; |?;"B:0  
int i=stack[top--]; c"f-$^<  
gqO%^b)6  
pivotIndex=(i+j)/2;  ?;ALF  
pivot=data[pivotIndex]; nK?k<  
:w {M6mM>  
SortUtil.swap(data,pivotIndex,j); y]QQvCJr3d  
.  T6_N  
file://partition WQIM2_=M  
l=i-1; k2_6<v Z  
r=j; &P,4EaC9;  
do{ 7)8rc(58  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T9<H%iF  
SortUtil.swap(data,l,r); cdek^/  
} 5H'b4Cyi`  
while(l SortUtil.swap(data,l,r); 3 2iWYN  
SortUtil.swap(data,l,j); a!^-~pH:  
k"DQbUy0L  
if((l-i)>THRESHOLD){ o3TBRn,  
stack[++top]=i; #RLch  
stack[++top]=l-1; QRg"/62WCD  
} iP#A-du  
if((j-l)>THRESHOLD){ @ @3)D%h  
stack[++top]=l+1; Y bn=Gy  
stack[++top]=j; \J3v>&m<7  
} K;ry4/Vap  
$E4O^0%/p  
} psyH?&T  
file://new InsertSort().sort(data); wEo-a< (  
insertSort(data); -+ IX[  
} mISu o  
/** J<5vs3[9  
* @param data zM8/ s96h  
*/ Op$J"R  
private void insertSort(int[] data) { R<0!?`b  
int temp; o{-USUGj7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Me K\eZ\  
} *\~kjZ 3  
} =DF@kR[CH"  
} P`IMvOs&  
oVuj020  
} _>?8eC]4a  
rY_C3;B  
归并排序: On96N|  
;ijfI  
package org.rut.util.algorithm.support; )H37a  
B'BbTI,  
import org.rut.util.algorithm.SortUtil; Kj<<&_B.H  
B,VSFpPx  
/** gx>mKSzy  
* @author treeroot f@. Q%+!4  
* @since 2006-2-2 GE3U0w6WbK  
* @version 1.0 _I70qz8  
*/ ;~1/eF  
public class MergeSort implements SortUtil.Sort{ yV]-Oa$*s0  
u2.r,<rC*Q  
/* (non-Javadoc) pvwnza1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /qQ2@k  
*/ {ZIFj.2  
public void sort(int[] data) { buM>^A"  
int[] temp=new int[data.length]; "}x70q'>S  
mergeSort(data,temp,0,data.length-1); 3<' Q`H>  
} uA}FuOE6  
+sbacMfq  
private void mergeSort(int[] data,int[] temp,int l,int r){ [\M?8R$)  
int mid=(l+r)/2; A[,"jh  
if(l==r) return ; ` Ehgn?6'  
mergeSort(data,temp,l,mid); 0@/E% T1c"  
mergeSort(data,temp,mid+1,r); o  >4>7  
for(int i=l;i<=r;i++){ xg5@;p  
temp=data; eEZlVHM;O  
} I;m@cSJ|j  
int i1=l; @U.}Ei  
int i2=mid+1; _TcQ12H 5<  
for(int cur=l;cur<=r;cur++){ kd4*Zab  
if(i1==mid+1) FEi,^V  
data[cur]=temp[i2++]; \,#4+&4b  
else if(i2>r) ?}Ptb&Vk(  
data[cur]=temp[i1++]; J1ro\"  
else if(temp[i1] data[cur]=temp[i1++]; ]~ 8N  
else Mw7UU1 ei  
data[cur]=temp[i2++]; xcRrI|?eC  
} A(sx5Ynp  
} LUVJ218p  
@:&dOqQ  
} `e;Sjf<  
[&k k  
改进后的归并排序: #K*q(ei,7h  
LzSusjEW@  
package org.rut.util.algorithm.support; [goPmVe+  
?B:wV?-`  
import org.rut.util.algorithm.SortUtil; ieoUZCO^r\  
=y/ Lbe}:  
/** /*2W?ZM~H  
* @author treeroot X?xm1|\  
* @since 2006-2-2 a9JJuSRC  
* @version 1.0 3>3ZfFC  
*/ f5XcBW9E  
public class ImprovedMergeSort implements SortUtil.Sort { 0~5}F^8[L  
&I_!&m~  
private static final int THRESHOLD = 10; r<H^%##,w  
R2f,a*>  
/* 2>$L>2$  
* (non-Javadoc) ! r\ktX  
* wm[d5A4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Le #+ P  
*/ zq>"a&Y,  
public void sort(int[] data) { (MU7  
int[] temp=new int[data.length]; F?Nk:# V  
mergeSort(data,temp,0,data.length-1); =umS^fJ5`  
} 2*E<G|-F  
-mdPqVIJn:  
private void mergeSort(int[] data, int[] temp, int l, int r) { rxA)&  
int i, j, k; NGGd6V%'-  
int mid = (l + r) / 2; /P}tgcs  
if (l == r) :iiTz$yk  
return; bvvx(?!  
if ((mid - l) >= THRESHOLD) 62E(=l  
mergeSort(data, temp, l, mid); I9&<:`  
else / UBAQ8TR  
insertSort(data, l, mid - l + 1); DuZ]g#  
if ((r - mid) > THRESHOLD) &,|uTIs  
mergeSort(data, temp, mid + 1, r); 9:5NX3"p  
else UZ0O j5B.  
insertSort(data, mid + 1, r - mid); K`2DhJC  
}eK*)  
for (i = l; i <= mid; i++) { \zDV|n~{w  
temp = data; r{;4(3E2  
} ur5n{0#  
for (j = 1; j <= r - mid; j++) { RtEkd_2  
temp[r - j + 1] = data[j + mid]; ;!Bkk9r"H  
} i<![i5uAI  
int a = temp[l]; ]c+'SJQ  
int b = temp[r]; j0M;2 3@[  
for (i = l, j = r, k = l; k <= r; k++) { YR#1[fe*_  
if (a < b) { 0M.[) @  
data[k] = temp[i++]; ZS;kCdL   
a = temp; ZXkAw sr  
} else { 7:<>#  
data[k] = temp[j--]; ^el:)$  
b = temp[j]; Pk2 "\y@q/  
} Z)4P>{  
} YZD]<ptR  
} MkG ->*  
Jrl xa3 [  
/** J#nEGl|a  
* @param data $o^}<)DW  
* @param l B-zt(HG  
* @param i L1+cv;t  
*/ p gi7 JQ  
private void insertSort(int[] data, int start, int len) { pYQs|5d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sIM`Q%  
} XRin~wz|S  
} EaL+}/q&  
} P0<uF`87  
} *()#*0  
)E|Bb=%  
堆排序: h@8  
W`kgYGnFG  
package org.rut.util.algorithm.support; .!! yj,bQz  
sk/ Mh8z  
import org.rut.util.algorithm.SortUtil; bZJiubBRI  
dD!SgK[Jv  
/** N9Vcp~;  
* @author treeroot A&#Bf#!G  
* @since 2006-2-2 KcE=m\h  
* @version 1.0 BC+qeocg  
*/ ~A( Pa-  
public class HeapSort implements SortUtil.Sort{ ^a r9$$~/!  
-ybupUJcbv  
/* (non-Javadoc) Ja2.1v|r .  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nwYeOa/t  
*/ ,kI1"@Tu  
public void sort(int[] data) { m-]"I8 [  
MaxHeap h=new MaxHeap(); x;/3_"$9>\  
h.init(data); a!.8^:B&  
for(int i=0;i h.remove(); /xnhHwJm  
System.arraycopy(h.queue,1,data,0,data.length); 7Q&P4{hi0  
} )LUl?  
g;1 UZE;  
private static class MaxHeap{ vF 1$$7k  
;!b(b%  
void init(int[] data){ FeJ5^Gh.  
this.queue=new int[data.length+1]; 9EW 7,m{A  
for(int i=0;i queue[++size]=data; L M[<?`%p  
fixUp(size); |,crQ'N'  
} }W J`q`g  
} Urr1 K)  
eX/$[SL[  
private int size=0; UgJHSl  
~Hf,MLMdTf  
private int[] queue; |ipppE=  
_4w%U[GT,  
public int get() { u-$AFSt  
return queue[1]; +iR ;D$w  
} aJ ts  
>#Y q&@G  
public void remove() { Bf.RYLsh6  
SortUtil.swap(queue,1,size--); xYq8\9Qb  
fixDown(1); qYs6PLC  
} 1zffPC8jl  
file://fixdown c1f6RCu$b  
private void fixDown(int k) { '_%Jw:4k  
int j; 1Ppzch7  
while ((j = k << 1) <= size) { K`sm  
if (j < size %26amp;%26amp; queue[j] j++; 6Xa2A 6  
if (queue[k]>queue[j]) file://不用交换 uBXI*51{  
break; b~p <   
SortUtil.swap(queue,j,k); \$I )}  
k = j; e# DAa  
} g  YZgo  
} xHmc8G$zu  
private void fixUp(int k) { DX|kO  
while (k > 1) { cW2:D$Pe  
int j = k >> 1; ,$Mw/fA  
if (queue[j]>queue[k]) :d;5Q\C`  
break; 2t'&7>Ys{  
SortUtil.swap(queue,j,k); :>;#/<3{  
k = j; <5 +?&i  
} {>qCZ#E5WO  
}  i.]}ooI  
&N#)(rQ1  
} ! ^W|;bq  
}`X$ '  
} b]~M$y60q  
Hcpw [%(  
SortUtil: K|&y?w  
TFhj]r^ {  
package org.rut.util.algorithm; UTz;Sw?~hw  
U8d  wb  
import org.rut.util.algorithm.support.BubbleSort; )]}*oO  
import org.rut.util.algorithm.support.HeapSort; A, os rv  
import org.rut.util.algorithm.support.ImprovedMergeSort; h(fh |R<  
import org.rut.util.algorithm.support.ImprovedQuickSort; #KwFrlZ  
import org.rut.util.algorithm.support.InsertSort; 9o6y7hEQy  
import org.rut.util.algorithm.support.MergeSort; *e R$  
import org.rut.util.algorithm.support.QuickSort; mMR[(  
import org.rut.util.algorithm.support.SelectionSort; 9D@Ez"xv  
import org.rut.util.algorithm.support.ShellSort; C<pF13*4  
w?[)nlNW  
/** T"z!S0I  
* @author treeroot tPUQ"S  
* @since 2006-2-2 qy !G&  
* @version 1.0 l/]P6 @N  
*/ Kfi A 7W  
public class SortUtil { 9/{g%40B^  
public final static int INSERT = 1; (- uk[["3  
public final static int BUBBLE = 2; a36<S0R  
public final static int SELECTION = 3; 9:Y\D.M  
public final static int SHELL = 4; 5segzaI  
public final static int QUICK = 5; )gR&Ms4  
public final static int IMPROVED_QUICK = 6; $KiA~l  
public final static int MERGE = 7; E-/]UH3u H  
public final static int IMPROVED_MERGE = 8; ;RrfE8mGj  
public final static int HEAP = 9; # a3Q<%V  
H/b(dbs  
public static void sort(int[] data) { .C1^QY-wL  
sort(data, IMPROVED_QUICK); F'K{=  
} *6h.#$\  
private static String[] name={ </fnbyGR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w-KtxG(  
}; i|<*EXB"  
4bO7rhve  
private static Sort[] impl=new Sort[]{ ?;$g,2n  
new InsertSort(), YC$pT  
new BubbleSort(), PU8R 0r2k\  
new SelectionSort(), k";;Snk  
new ShellSort(), dO=<3W  
new QuickSort(), S SzOz-&GA  
new ImprovedQuickSort(), 6 @d( <Z  
new MergeSort(), 9SrV,~zD  
new ImprovedMergeSort(), TiOvrp7B  
new HeapSort() O&)Y3O1  
}; 33; yt d  
Nb$)YMbA  
public static String toString(int algorithm){ `1P &  
return name[algorithm-1]; WN0^hDc-  
} m?csake.Me  
wiutUb Y  
public static void sort(int[] data, int algorithm) { GVg0)}  
impl[algorithm-1].sort(data); a+X X?uN{  
} a\zbi$S  
4fN<pG,  
public static interface Sort { jQc0_F\  
public void sort(int[] data); ?O_;{(F_  
} H1X6f7`  
Y-Z.AA,  
public static void swap(int[] data, int i, int j) { l-mUc1.S  
int temp = data; q3;HfZ  
data = data[j]; GUK/Xiu  
data[j] = temp; {u:DC4eut  
} hGpaHY>My  
} v/kYyz  
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