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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。 qWRNHUd  
插入排序: :)KTZ  
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package org.rut.util.algorithm.support; 844tXMtPB\  
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import org.rut.util.algorithm.SortUtil; p{A}p9sjx  
/** }4bB7,j  
* @author treeroot p{mxk)A  
* @since 2006-2-2 qT4I Y$h  
* @version 1.0 zznPD%#Sc  
*/ ^>,< *p  
public class InsertSort implements SortUtil.Sort{ t x:rj6 -z  
+zFV~]b  
/* (non-Javadoc) , aRJ!AZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kWZ/ej  
*/ jOoIF/So  
public void sort(int[] data) { "| .  +L  
int temp; *=-__|t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WmT}t  
} MZUF! B  
} pm'@2dT  
} s,UN'~e1  
l|@/?GaH  
} ;4-p upK~%  
m [g< K  
冒泡排序: |QAeQWP+1  
&=s|  
package org.rut.util.algorithm.support; 2a._?(k_y  
jMz1s%C  
import org.rut.util.algorithm.SortUtil; p|bc=`TD  
s T :tFK\  
/** CX&yjT6`  
* @author treeroot EzD -1sJ  
* @since 2006-2-2 ?)Czl4J  
* @version 1.0 [a>JG8[ ,t  
*/ 9A/Kn]s(jj  
public class BubbleSort implements SortUtil.Sort{ ps!5HZ2:  
/ K_e;(Y_  
/* (non-Javadoc) v@$evmA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X/`#5<x  
*/ RvyBg:Aj5  
public void sort(int[] data) { I{?E/Sc  
int temp; SQ~N X)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ APHtJoS  
if(data[j] SortUtil.swap(data,j,j-1); +!L_E6pyXE  
} ? BHWzo!  
} 1WUFk?p  
} s3MMICRT.  
} h9Tf@]W   
Z!]U&Ax`Z  
} dbMu6Bm\G  
BDRYip[Sa  
选择排序: lJ2|jFY9  
xu%! b0  
package org.rut.util.algorithm.support; [}9XHhY1O=  
+2;#9aa I  
import org.rut.util.algorithm.SortUtil; fcE/  
.UT,lqEkv  
/** {0A[v}X ~  
* @author treeroot b2}QoJ@`  
* @since 2006-2-2 #czyr@  
* @version 1.0 -~<q,p"e  
*/ 5,0 wj0l  
public class SelectionSort implements SortUtil.Sort { Ry8WNVO}R  
d}wa[WRv   
/* ~q8V<@?  
* (non-Javadoc) Zv1Bju*y  
* 8aZey_Hw;+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sO{0hZkc  
*/ ~*' 8=D?)  
public void sort(int[] data) { l $p_])x  
int temp; (Qx-KRH  
for (int i = 0; i < data.length; i++) { VeN&rjc  
int lowIndex = i; 7/D9n9F  
for (int j = data.length - 1; j > i; j--) { siss_1J  
if (data[j] < data[lowIndex]) { 2#n$x*CY  
lowIndex = j; ZHiICh|et%  
} s!j(nUd/  
} Eis%)oE  
SortUtil.swap(data,i,lowIndex); `jUS{ 3^  
} ArmL,  
} \[IdR^<YM  
+%Bf y4F6  
} WB=<W#?w7%  
SVg@xu+  
Shell排序: Wy^[4|6  
7>#L  
package org.rut.util.algorithm.support; ziLr }/tg  
bn*{*=(|  
import org.rut.util.algorithm.SortUtil; 8)-t91hkL  
vYMbson}  
/** -aH?7HV}  
* @author treeroot XY+aunLf  
* @since 2006-2-2 @KW+?maW  
* @version 1.0 _~w V{ yp  
*/ QN}3S0  
public class ShellSort implements SortUtil.Sort{ l9ifUh e  
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/* (non-Javadoc) {o5K?Pb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M[ ~2,M&H  
*/ . ~A"Wyu\  
public void sort(int[] data) { cP#]n)<  
for(int i=data.length/2;i>2;i/=2){ 8Snq75Q<   
for(int j=0;j insertSort(data,j,i); tZNad  
} #o r7T^  
} f<> YYeY  
insertSort(data,0,1); o. V0iS]  
} , R.+-X  
,a]~hNR*X  
/** g]iy-,e  
* @param data Y%CL@G60  
* @param j 5>1Y="B  
* @param i LHHDt<+B  
*/ vq0M[Vy  
private void insertSort(int[] data, int start, int inc) { E!}-qbH^  
int temp; S!I <m&Cgc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $p6Xa;j$9  
} 2p3u6\y  
} q| =q:4_L  
} uDE91.pUkr  
 Sj{rvW  
} @'<j!CqQ o  
0ZID @^  
快速排序: bZOy~F|  
l>5]Wd{/  
package org.rut.util.algorithm.support; }_kI>  
5k%N<e` `  
import org.rut.util.algorithm.SortUtil; y8~)/)l&  
2`FsG/o\T~  
/** d T,m{[+  
* @author treeroot S~a:1 _Wl  
* @since 2006-2-2 P"PeL B9K  
* @version 1.0 K_lL\  
*/ Wse*gO  
public class QuickSort implements SortUtil.Sort{ Znh uIA AG  
/"%IhX-  
/* (non-Javadoc) RkH oT^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f\F_?s)_y  
*/ 5.K$ X$+7}  
public void sort(int[] data) { ETWmeMN  
quickSort(data,0,data.length-1); #PLB$$  
} w`#0 Y9O  
private void quickSort(int[] data,int i,int j){ m/F(h-?  
int pivotIndex=(i+j)/2; Zz)oMw  
file://swap !K^kKP*l  
SortUtil.swap(data,pivotIndex,j); NX{-D}1X=  
8apKp?~yW  
int k=partition(data,i-1,j,data[j]); Hj4w i|  
SortUtil.swap(data,k,j); x+:,b~Skk  
if((k-i)>1) quickSort(data,i,k-1); hq8/`u YF  
if((j-k)>1) quickSort(data,k+1,j); zUUxxS_?  
_~S^#ut+  
} W Pp\sIP  
/** "MS`d+rf\  
* @param data l6DIsR  
* @param i *~<]|H5~  
* @param j 7@y!R   
* @return FiU;>t<)  
*/ wyzBkRg.  
private int partition(int[] data, int l, int r,int pivot) { iJKm27 ">  
do{ zm3MOH^a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~lalc ^  
SortUtil.swap(data,l,r); < ,cIc]eX  
} \,bFm,kC?  
while(l SortUtil.swap(data,l,r); q(PT'z  
return l; >A(?Pn{|a  
} i e)1h  
i!}nGJGg  
} }Ka.bZS  
;!Z7-OZX  
改进后的快速排序: o` 1V  
s)DNLx  
package org.rut.util.algorithm.support; m6Cd^'J9^  
E~@HC5.M  
import org.rut.util.algorithm.SortUtil; 89- 8v^ Pq  
~CdseSo 9  
/** ?eVuz x  
* @author treeroot k -DB~-L  
* @since 2006-2-2 &Cpxo9-  
* @version 1.0 *DI:MBJY  
*/ Y./}zCT  
public class ImprovedQuickSort implements SortUtil.Sort { RdVis|7o  
K\E]X\:  
private static int MAX_STACK_SIZE=4096; <QW1fE  
private static int THRESHOLD=10; :8|3V~%m  
/* (non-Javadoc) *Qwhi&k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 79B`w #  
*/ H6CGc0NS+  
public void sort(int[] data) { qH$rvD!]  
int[] stack=new int[MAX_STACK_SIZE]; : )"jh`  
f`]E]5?  
int top=-1; mhkAI@)>  
int pivot; +xdFkc  
int pivotIndex,l,r; ,, #rv-*  
`::'UfHc  
stack[++top]=0; YM.IRj2/1  
stack[++top]=data.length-1; /R$x-7t)^(  
sS2E8Z2  
while(top>0){ "KE38`NL  
int j=stack[top--]; TN@JPoH  
int i=stack[top--]; +-YuBVHL  
T&MS_E&;  
pivotIndex=(i+j)/2; M*@ aA XM  
pivot=data[pivotIndex]; QDT{Xg* I  
T2_#[bk*d  
SortUtil.swap(data,pivotIndex,j); Ihq@|s8  
a;owG/\p  
file://partition .,K?\WZ  
l=i-1; ~0r.3KTl"Y  
r=j; KY34 'Di  
do{ 7{6.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l=?y=2+  
SortUtil.swap(data,l,r); =2)$|KC  
} RT A=|q  
while(l SortUtil.swap(data,l,r); z,x"vK(  
SortUtil.swap(data,l,j); OQ&D?2r  
0uJzff!|  
if((l-i)>THRESHOLD){ DCzPm/#b  
stack[++top]=i; gsm^{jB  
stack[++top]=l-1; )MW}!U9G  
} }' 0Xz9/ l  
if((j-l)>THRESHOLD){ ,u^0V"hJ  
stack[++top]=l+1; #|1QA3KzO  
stack[++top]=j; =y]b|"s~2  
} $AhX@|?z  
4m(>"dHP  
} R*{?4NKG  
file://new InsertSort().sort(data); !vp!\Zj7o  
insertSort(data); YYr&r.6  
} Q|z06_3i  
/** p#BvlS=D  
* @param data SFgIY]  
*/ bYB}A :  
private void insertSort(int[] data) { &j@J<*k  
int temp; r<"/P`r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~teW1lMu(  
} EA E\Xv  
} v]SE?xF{U  
} 6$<o^Ha*R  
,fJ(.KI0  
} WB [G!'  
YaT+BRh?  
归并排序: 'wnY>hN  
mKn357:  
package org.rut.util.algorithm.support; F1*rUsRKN  
w>BFgb?  
import org.rut.util.algorithm.SortUtil; &u\z T P  
RW^v{'o  
/** +ENW=N  
* @author treeroot (KImqB$i.  
* @since 2006-2-2 CvWEXY_P2  
* @version 1.0 ?q}wl\"8  
*/ JJ=is}S|  
public class MergeSort implements SortUtil.Sort{ "{"2h>o#D}  
ZboJszNb;  
/* (non-Javadoc) ^J~4~!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m$qC 8z]  
*/ ?JTyNg4<  
public void sort(int[] data) { .FRF<_`^  
int[] temp=new int[data.length]; fqsp1m$  
mergeSort(data,temp,0,data.length-1); Cj\+u\U#  
} KrG6z#)Uz  
i8@e}O I  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y8{1?LO  
int mid=(l+r)/2; TaJn2cC^  
if(l==r) return ; #$C]0]|  
mergeSort(data,temp,l,mid); $<mL2$.L~  
mergeSort(data,temp,mid+1,r); |aJ6363f.  
for(int i=l;i<=r;i++){ N;pr:  
temp=data; 7[0k5-  
} W2Z]?l;vQQ  
int i1=l; Jxw:Jk ~  
int i2=mid+1; U (7P X`1  
for(int cur=l;cur<=r;cur++){ Y[?Wt/O;  
if(i1==mid+1) arL&^]JnZ,  
data[cur]=temp[i2++]; G6VHl:e7z  
else if(i2>r) 8%f! X51  
data[cur]=temp[i1++]; U(LR('-h  
else if(temp[i1] data[cur]=temp[i1++]; |L{dQ)-'l  
else !Y(qpC:$  
data[cur]=temp[i2++]; ;]x5;b9`  
} 6YGr"Kj &  
} 7]zZh a4X  
5mVu]T`  
} !sQ8,l0h  
bx e97]  
改进后的归并排序: K -1~K  
\ySc uT  
package org.rut.util.algorithm.support; n(S-F g  
d'fpaLV  
import org.rut.util.algorithm.SortUtil; (k.7q~:  
e-=PT 1T`  
/** {5-{f=Rk  
* @author treeroot S*s9 ?  
* @since 2006-2-2 G{=$/&St  
* @version 1.0 =Fl4tY#X  
*/ wh+ibH}@!  
public class ImprovedMergeSort implements SortUtil.Sort { gdNp2b  
7/!C  
private static final int THRESHOLD = 10; K): sq{  
:#jv4N  
/* jk}PucV  
* (non-Javadoc) &bu`\|V  
* `.WKU"To  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o e"ShhT  
*/ 4\es@2q  
public void sort(int[] data) { /loN Outw  
int[] temp=new int[data.length]; :]hfmWC   
mergeSort(data,temp,0,data.length-1); 1V?)zp  
} a Z, Wa-k  
4FdH:os  
private void mergeSort(int[] data, int[] temp, int l, int r) { )E2Lf ]  
int i, j, k; &r!>2$B\  
int mid = (l + r) / 2; /*HSAjv  
if (l == r) H9!*DA<W  
return; L$Z_j()2  
if ((mid - l) >= THRESHOLD) zZiVBUmE<  
mergeSort(data, temp, l, mid); JdEb_c3S  
else _'a4I;  
insertSort(data, l, mid - l + 1); x^BBK'  
if ((r - mid) > THRESHOLD) h(sKGCG  
mergeSort(data, temp, mid + 1, r); S-|$sV^cG  
else Ooy96M~_G  
insertSort(data, mid + 1, r - mid); 6mLE-( Z7  
CZ}tQx5ga  
for (i = l; i <= mid; i++) { 7B`0mK3  
temp = data; c7wgjQ[   
} QNEaj\   
for (j = 1; j <= r - mid; j++) { a9-;8`fCR  
temp[r - j + 1] = data[j + mid]; DR8dJ#  
} <:-&yDh u  
int a = temp[l]; !iqz 4E  
int b = temp[r]; ,#Y".23G  
for (i = l, j = r, k = l; k <= r; k++) { (6'Hzl^Kp  
if (a < b) { gk%ye&:f  
data[k] = temp[i++]; P 'k39  
a = temp; Wfy+7$14M  
} else { hp}8 3.oA  
data[k] = temp[j--]; O0RQ}~$'m  
b = temp[j]; k{62UaL.  
} w2GY,,R  
} Ta$<#wb  
}  I9 m  
2&#iHv  
/** 30"G%DFd  
* @param data + P.Ir  
* @param l ;ecF~-oku  
* @param i ElxbHQj6  
*/ n1h+`nsf  
private void insertSort(int[] data, int start, int len) { rD?o97  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]A[~2]  
} C?k4<B7V  
} m^KkS   
} ?zqXHv#x  
} Gr?gHAT  
<o}t-Bgg  
堆排序: *L_wRhhk  
'#?hm-Ga  
package org.rut.util.algorithm.support; p9J(,}  
l[Oxf|  
import org.rut.util.algorithm.SortUtil; X3vrD{uNU  
`h#JDcT;a  
/**  .~']gih#  
* @author treeroot 2e &Zs%u  
* @since 2006-2-2 mi?Fy0\  
* @version 1.0 s!Vtw p9  
*/ yMxS'j1  
public class HeapSort implements SortUtil.Sort{ i8F~$6C  
1'U-n{fD  
/* (non-Javadoc) :+n7oOV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Jp>2d  
*/ M Cz3RZK  
public void sort(int[] data) { k9 E ?5  
MaxHeap h=new MaxHeap(); ruVm8 BO  
h.init(data); K\PS$  
for(int i=0;i h.remove(); x($1pAE  
System.arraycopy(h.queue,1,data,0,data.length); xgVt0=q  
} i7_BnJJX{B  
N]~q@x;<)3  
private static class MaxHeap{ fpUX @b  
"]% L{a P  
void init(int[] data){ 89l}6p/L  
this.queue=new int[data.length+1]; ^z1WPI  
for(int i=0;i queue[++size]=data; APy a&TG  
fixUp(size); -xXM/3g1u  
} h2 y@xnn  
} UHHe~L  
JdnZY.{S0  
private int size=0; ):\L#>:w  
EP @=i  
private int[] queue; a<Ta*:R$0  
@<+(40`*  
public int get() { 'tc$#f^:  
return queue[1]; $xqphhBg  
} F-t-d1w6  
P`0aU3pl  
public void remove() { Z(FAQ\7  
SortUtil.swap(queue,1,size--); >r3Wo%F'  
fixDown(1); s_|wvOW)'  
} {^v50d  
file://fixdown ^H>vJT  
private void fixDown(int k) { {k>m5L  
int j; ;J<kG@  
while ((j = k << 1) <= size) { : &]%E/  
if (j < size %26amp;%26amp; queue[j] j++; : f Wh7X3  
if (queue[k]>queue[j]) file://不用交换 yl*S|= 8;k  
break; DvGtO)5._  
SortUtil.swap(queue,j,k); &c'unKH  
k = j; -$*YN{D+  
} }x+{=%~N  
} &Jj ?C  
private void fixUp(int k) { &p*N8S8  
while (k > 1) { nt7ui*k  
int j = k >> 1; _-^@Jx[  
if (queue[j]>queue[k]) {.sF&(e   
break; zOcMc{w0   
SortUtil.swap(queue,j,k); /bVI'fT  
k = j; .w`8_v&Y  
} J{91 t |  
} kZ2+=/DYN  
eL],\\q  
} uE>}>6)b  
tG6 o^  
} {3?g8e]zr  
E: %%Dm  
SortUtil: A%Ao yy4E  
NLj0\Pz|B  
package org.rut.util.algorithm; Z#0z#M`  
e3[N#ryt  
import org.rut.util.algorithm.support.BubbleSort; 'tOo0Zgc  
import org.rut.util.algorithm.support.HeapSort; Pai{?<zGi  
import org.rut.util.algorithm.support.ImprovedMergeSort; VF4F7'  
import org.rut.util.algorithm.support.ImprovedQuickSort; ks! G \<I  
import org.rut.util.algorithm.support.InsertSort;  ,}bC  
import org.rut.util.algorithm.support.MergeSort; 45# `R%3  
import org.rut.util.algorithm.support.QuickSort; w>#~_x, `  
import org.rut.util.algorithm.support.SelectionSort; +Q{jV^IT9  
import org.rut.util.algorithm.support.ShellSort; - Q,lUP  
5dhRuc  
/** F3?v&  
* @author treeroot V&gUxS]*  
* @since 2006-2-2 :Y"f .>  
* @version 1.0 4ed( DSN  
*/ qsJo)SA  
public class SortUtil { Ly3^zF W  
public final static int INSERT = 1; |*!I(wm2i  
public final static int BUBBLE = 2; z\v\T|C  
public final static int SELECTION = 3; 5}1cNp6@  
public final static int SHELL = 4; rZ^DiFR  
public final static int QUICK = 5; QjPcfR\  
public final static int IMPROVED_QUICK = 6; ' e-FJ')|  
public final static int MERGE = 7; QkA79%;j  
public final static int IMPROVED_MERGE = 8; [ %r :V"  
public final static int HEAP = 9; b-wFnMXk+  
D:%v((Ccw  
public static void sort(int[] data) { (fq>P1-  
sort(data, IMPROVED_QUICK); ~$+9L2gz  
} K2!KMhvQ  
private static String[] name={ z[vMO%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (CEJg|,  
}; I'C{=?  
ybfNG@N*  
private static Sort[] impl=new Sort[]{ &B[$l`1  
new InsertSort(), ?QZ\KY  
new BubbleSort(), Lt_7pb%  
new SelectionSort(), T*z >A  
new ShellSort(), O||M |  
new QuickSort(), I#m5Tl|#  
new ImprovedQuickSort(), .HMO7n6)8l  
new MergeSort(), H!,#Z7s  
new ImprovedMergeSort(), %3Y&D]  
new HeapSort() 6kHAoERp  
}; iN_G|w[d  
!J.qH%S5   
public static String toString(int algorithm){ m7fmQUk  
return name[algorithm-1]; ze]2-B4  
}  ;A1pqHr  
Ig]Gg/1G  
public static void sort(int[] data, int algorithm) { qbmy~\ZY  
impl[algorithm-1].sort(data); t(^c]*r~  
} POdG1;)  
5PG%)xff*  
public static interface Sort { :v=Yo  
public void sort(int[] data); <kt,aMw[*  
} (eSa{C\  
Rj1Z  
public static void swap(int[] data, int i, int j) { (`xhh  
int temp = data; G=(F-U;*  
data = data[j]; C;M.dd  
data[j] = temp; nxCwg>  
} rk{DrbRx  
} <1>\?$)D  
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