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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。 '~-IV0v9  
插入排序: ?)3jqQ.  
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package org.rut.util.algorithm.support; o4=Yu7L  
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import org.rut.util.algorithm.SortUtil; 1K|@ h&@  
/** g?q KNY  
* @author treeroot "PpjoM ~  
* @since 2006-2-2 \Mi#{0f+q  
* @version 1.0 #I`ms$j%  
*/ i RmQ5ezk  
public class InsertSort implements SortUtil.Sort{ CBD_a#K{  
.6T6 S v  
/* (non-Javadoc) 2Eh@e([PMs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SlT*C6f  
*/ =;c_} VY  
public void sort(int[] data) { B!aK  
int temp;  YRB%:D@u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fm j=  
} g{pQ4jKF  
} 6*1$8G`$8,  
} _py2kjA6  
0kCQ0xB[a5  
} 0|)19LR  
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冒泡排序: V"d=.Hb>  
Pl~P-n  
package org.rut.util.algorithm.support; Gm=>!.p  
^>r^3C)_-  
import org.rut.util.algorithm.SortUtil; /3^P_\,>f  
fU*C/ d3  
/** ,9/5T:2  
* @author treeroot &^ I+s^\=  
* @since 2006-2-2 9F_6}.O  
* @version 1.0 +?N}Y{Y&  
*/ ^GXEJU 7U  
public class BubbleSort implements SortUtil.Sort{ Qd8b-hg  
CD?&<NV  
/* (non-Javadoc) rH}fLu8,;Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C%H9[%k  
*/ oK-!(1A-  
public void sort(int[] data) { IbdM9qo7  
int temp; A'eAu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cNP/<8dq  
if(data[j] SortUtil.swap(data,j,j-1); 0P 5BArJ?  
} N <pbO#e  
} k0&lu B%  
} l`rC0kJ]  
} F ! )-|n}  
|6B6?'  
} }bfn_ G  
=l|>.\-  
选择排序: <NQyP{p  
{$TZ}z"DA  
package org.rut.util.algorithm.support; F2oJ]th.3  
<%,'$^'DS  
import org.rut.util.algorithm.SortUtil; X!0kK8v  
$j`<SxJ>  
/** /e5\9  
* @author treeroot anx&Xj|=.F  
* @since 2006-2-2 41;)-(1  
* @version 1.0 ic~Z_?p  
*/ {,V$*  
public class SelectionSort implements SortUtil.Sort { @P70W<<  
OJ[rj`wrW^  
/* A +!sD5d  
* (non-Javadoc) w#{l 4{X|  
* }GRMZh_8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h;n\*[fDc  
*/ jyjQzt >\  
public void sort(int[] data) { 91;HiILgT  
int temp; ?Leyz  
for (int i = 0; i < data.length; i++) { (@?eLJlT  
int lowIndex = i; U?6yke  
for (int j = data.length - 1; j > i; j--) { <$C<Ba?;?  
if (data[j] < data[lowIndex]) { !1-&Y'+  
lowIndex = j; V [4n'LcE  
} DNho%Xk  
} 9}n,@@  
SortUtil.swap(data,i,lowIndex); W8.j /K:  
} 2 zl~>3S  
} 1#!@["  
&l!$Sw-u;  
} "z/V%ZK~f  
6<76O~hNZ  
Shell排序: 0o;~~\fq.  
#J~Xv:LgD  
package org.rut.util.algorithm.support; =5_y<0`4  
#O6 EP#B  
import org.rut.util.algorithm.SortUtil; 4Bo<4 4-,  
C >kmIw'  
/** Mryn>b`cB  
* @author treeroot fv5C!> t  
* @since 2006-2-2 T:n< db,Px  
* @version 1.0 ZV#$Z  
*/ 4@~a<P#  
public class ShellSort implements SortUtil.Sort{ afy/K'~  
n'3u] ~7^  
/* (non-Javadoc) }MjQP R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @$ftG  
*/ /yt7#!tm+  
public void sort(int[] data) { {tmKCG  
for(int i=data.length/2;i>2;i/=2){ d"!yD/RD  
for(int j=0;j insertSort(data,j,i); l qXc  
} tWRf'n[+]  
} %ph"PR/t?  
insertSort(data,0,1); 4zX=3iBt  
} Q%M_   
Dpj-{q7C  
/** uA^hCh-js  
* @param data 8qmknJC  
* @param j (7 ijt  
* @param i mLULd}g/o  
*/ skK*OO 2-  
private void insertSort(int[] data, int start, int inc) { kyK'  
int temp; ,M{Q}:$+4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Rj&qh`  
} 'oCm.~;_  
} p70,\&@3  
} Y^X:vI  
uwId  
} 9IOGc}  
Wv NI=>  
快速排序: *78)2)=~  
7 {nl..`  
package org.rut.util.algorithm.support; y-<$bA[K~  
C;%Y\S  
import org.rut.util.algorithm.SortUtil; ,y%ziay  
B MY>a  
/** 5<^'Cy  
* @author treeroot \{:%v#ZZ  
* @since 2006-2-2 1ThwvF%Qo  
* @version 1.0 >kZ6f4  
*/ )]tvwEo  
public class QuickSort implements SortUtil.Sort{ {Evcc+E q  
Z/n3aYM  
/* (non-Javadoc) yT&x`3f"i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n{L:MT9TD  
*/ lD-V9   
public void sort(int[] data) { k=ts&9\  
quickSort(data,0,data.length-1); ;Na^]32  
} PaxK^*  
private void quickSort(int[] data,int i,int j){ >eRZ+|k?N  
int pivotIndex=(i+j)/2; "0b?+ 3_{G  
file://swap e& p_f<  
SortUtil.swap(data,pivotIndex,j); @~s~/[  
KjBOjD'I  
int k=partition(data,i-1,j,data[j]); RA} U#D:$i  
SortUtil.swap(data,k,j); w LpkUa  
if((k-i)>1) quickSort(data,i,k-1); 8H7O/n  
if((j-k)>1) quickSort(data,k+1,j); k)|'JDm  
wy YtpW  
} |G)Y8 #D  
/** %N>\:8 5?  
* @param data 8.[&wy U  
* @param i K]ca4Z  
* @param j .uBO  
* @return rAM *\=  
*/ &;E d*OJ  
private int partition(int[] data, int l, int r,int pivot) { Oy:QkV9  
do{ =w?M_[&K)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^l--zzO 8l  
SortUtil.swap(data,l,r); zuk"  
} cxY$LY!zX  
while(l SortUtil.swap(data,l,r); pXve02b1B  
return l; (1rJFl!  
} TN J<!6  
uC- A43utv  
} Z^{+,$H@  
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改进后的快速排序: O@nqHZ  
QH4k!^  
package org.rut.util.algorithm.support; AfUZO^<  
qQL.c+%L  
import org.rut.util.algorithm.SortUtil; Ap% d<\,Z  
7Pwg+|  
/** qw|JJ  
* @author treeroot tCX9:2c  
* @since 2006-2-2 -MDO Zz\  
* @version 1.0 kkT3 wP  
*/ kJI3`gS+  
public class ImprovedQuickSort implements SortUtil.Sort { m5)EQE}gPp  
xLe =d|6  
private static int MAX_STACK_SIZE=4096; B*y;>q "{U  
private static int THRESHOLD=10; h (qshbC}  
/* (non-Javadoc) P87ld._  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "\4]X"3<+  
*/ `'kc|!%MUq  
public void sort(int[] data) { G4O,^ v;Q  
int[] stack=new int[MAX_STACK_SIZE]; C/CN '  
2H[=l Y  
int top=-1; D!X>O}  
int pivot; *e%Dg{_  
int pivotIndex,l,r; kNRyOUy  
'G<}U343=8  
stack[++top]=0; >~h>#{&  
stack[++top]=data.length-1; 'BqrJfv  
5.O-(eSa0&  
while(top>0){ tp#Z@5=  
int j=stack[top--]; zwMQXI'k83  
int i=stack[top--]; tvTWZ`  
'CS^2Z  
pivotIndex=(i+j)/2; mr@_ %U  
pivot=data[pivotIndex]; N )'8o}E  
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SortUtil.swap(data,pivotIndex,j); D}mo\  
F='Xj@&O  
file://partition CKx\V+\O  
l=i-1; 4Y`! bT`  
r=j; c=jcvDQ6W  
do{ NR ;q`Xe-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A * a{  
SortUtil.swap(data,l,r); 2_Pz^L  
} ^a086n  
while(l SortUtil.swap(data,l,r); !O~}, pp  
SortUtil.swap(data,l,j); GEhdk]<a7  
mG>T`c|r3  
if((l-i)>THRESHOLD){ ^?E^']H)5u  
stack[++top]=i; '&RZ3@}+  
stack[++top]=l-1; `kqT{fs  
} d|>9rX+f  
if((j-l)>THRESHOLD){ c zZrP"  
stack[++top]=l+1; se~ *<5  
stack[++top]=j; :|?~B%-p[  
} W3FymCI  
qRgK_/[]  
} NdM}xh  
file://new InsertSort().sort(data); p^p'/$<6_  
insertSort(data); 2dv|6p  
} M7`UoTc+>d  
/** 1f+*Tmc5]Q  
* @param data X=fPGyhZ  
*/ oN.Mra]D  
private void insertSort(int[] data) { %2^['8t#NH  
int temp; Bx\#`Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;[?J5X,  
} |hu"5*  
} [P.@1mV  
} g|tNa/  
db{NK wpj'  
} j%6|:o3G(  
F6RyOUma  
归并排序: r0~7v1rG  
2Som0T<2  
package org.rut.util.algorithm.support; 3{.9O$  
zi?qK?m  
import org.rut.util.algorithm.SortUtil; 38"8,k  
O{;M6U8C\  
/** RA*_&Ll&!C  
* @author treeroot M \ :"~XW  
* @since 2006-2-2 ?whRlh  
* @version 1.0 3c1o,2  
*/ d[~au=b  
public class MergeSort implements SortUtil.Sort{ ^JYF1   
o%kSR ]V|  
/* (non-Javadoc) gg lNpzj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &>d:ewM\  
*/ $=\oJ-(!@S  
public void sort(int[] data) { @qg0u#k5  
int[] temp=new int[data.length]; ~0VwF  
mergeSort(data,temp,0,data.length-1); vG'vgUo  
} &M!4]p ow  
H j>L>6>  
private void mergeSort(int[] data,int[] temp,int l,int r){ d_4n0Kh0  
int mid=(l+r)/2; [VfL v.8w  
if(l==r) return ; *T.={>HE8  
mergeSort(data,temp,l,mid); RM?_15m  
mergeSort(data,temp,mid+1,r); 8r7/IGFg  
for(int i=l;i<=r;i++){ |u?k-,uI9  
temp=data; jD&}}:Dj  
} k#l'ko/X  
int i1=l; {q5hF5!`)  
int i2=mid+1;  @oe3i  
for(int cur=l;cur<=r;cur++){ "cnG/{($*  
if(i1==mid+1) +=n x|:no  
data[cur]=temp[i2++]; #J%h!#3g  
else if(i2>r) v :'P"uU;4  
data[cur]=temp[i1++]; 9`nP(~  
else if(temp[i1] data[cur]=temp[i1++]; *X-~TC0 [  
else HB/ _O22  
data[cur]=temp[i2++]; &%_y6}xIw  
} "Qiq/"h  
} #C;#$|d  
2:smt)f  
} pl1EJ <  
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改进后的归并排序: t[H_6)  
~Mg8C9B?%3  
package org.rut.util.algorithm.support; 73! x@Duh  
GI'&g@?u  
import org.rut.util.algorithm.SortUtil; L<[,7V  
[)b/uR  
/** [T$$od[.  
* @author treeroot o m{n"cg  
* @since 2006-2-2 ^>P@5gcoE(  
* @version 1.0 ;-<<1Jz/2  
*/ <.y^  
public class ImprovedMergeSort implements SortUtil.Sort { .@x"JI> ;  
b&|YQW} ~  
private static final int THRESHOLD = 10; S7\|/h:4  
tZJ 9}\r  
/* P /f ~  
* (non-Javadoc) 2Wc;hJ.1  
* I'6 ed`|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Eo25ir%  
*/ H)?" 8 s  
public void sort(int[] data) { g-TX;(  
int[] temp=new int[data.length]; ];wohW%  
mergeSort(data,temp,0,data.length-1); f|[5&,2<  
} JydQA_   
I5|S8d<  
private void mergeSort(int[] data, int[] temp, int l, int r) { BT*K,p  
int i, j, k; 'nmYB:&!  
int mid = (l + r) / 2; *}Ae9  
if (l == r) +Fy- ~Mq  
return; ]i_):@  
if ((mid - l) >= THRESHOLD) <R]Wy}2-  
mergeSort(data, temp, l, mid); {?h6*>-^Z  
else Z{R=h7P  
insertSort(data, l, mid - l + 1); Do{*cSd  
if ((r - mid) > THRESHOLD) tM?I()Y&P  
mergeSort(data, temp, mid + 1, r); FdK R{dX}  
else :,J86#S)  
insertSort(data, mid + 1, r - mid); |L~gNC  
w~FO:/  
for (i = l; i <= mid; i++) { n(F<  
temp = data; ve_4@J)  
} ht[TMdV  
for (j = 1; j <= r - mid; j++) { !Vod0j">  
temp[r - j + 1] = data[j + mid]; jrMGc=KL  
} jAQ)3ON<  
int a = temp[l]; ^PCL^]W  
int b = temp[r]; -7Y'6''~W.  
for (i = l, j = r, k = l; k <= r; k++) { 9M-]~.O  
if (a < b) { Z!5m'yZO  
data[k] = temp[i++]; J4R  
a = temp; 5SPl#*W  
} else { 0ju wDd  
data[k] = temp[j--]; }M"'K2_Z  
b = temp[j]; 0"D?.E"$r  
} S+\Mt+o  
} YJtOdgG|q  
} jWb\"0)  
?;r7j V/`j  
/** 4VL!U?dk  
* @param data Se]t;7j  
* @param l V[2<ha[n>  
* @param i 14)kKWG  
*/ <pa];k(IQL  
private void insertSort(int[] data, int start, int len) { *^$N $t/2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e715)_HD  
} 66y,{t  
} ?2bE=|  
} ]V[  
} EPUJa~4  
[7t0[U~3?  
堆排序: }X.8.S'  
 3kzGL  
package org.rut.util.algorithm.support; l#(g&x6J  
~'YSVx& )  
import org.rut.util.algorithm.SortUtil; I7-PF?  
w `9GygS  
/** UVuuIW0k  
* @author treeroot 0O 9 Lg}  
* @since 2006-2-2 :ftyNaq'  
* @version 1.0 L[9+xK^g  
*/ f>JzG,-  
public class HeapSort implements SortUtil.Sort{ ki/Lf4  
:\HN?_?{4  
/* (non-Javadoc) dIh(~KqB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &T4Cn@  
*/ _\V{X}ftqa  
public void sort(int[] data) { sT8kVN|Uv  
MaxHeap h=new MaxHeap(); %Zi,nHg8  
h.init(data); mjJlXA  
for(int i=0;i h.remove(); SEn8t"n  
System.arraycopy(h.queue,1,data,0,data.length); <PA$hTYM  
} pmXWI`s  
| r*1.V(  
private static class MaxHeap{ mwiPvwHrg  
o~z.7q  
void init(int[] data){ gQzF C&g  
this.queue=new int[data.length+1]; IaZAP  
for(int i=0;i queue[++size]=data; 5;%xqdD  
fixUp(size); 5Szo5  
} HrcnyQ`Q0  
} 78}%{7YY  
X=7vUb,\gB  
private int size=0; GTX&:5H\t  
"+OMo-<K7  
private int[] queue; d=Ihl30m  
PzG:M7  
public int get() { @!tmUme1c  
return queue[1]; 2/W0y!qh1  
} e&I.kC"j6  
R~ u7;Wv  
public void remove() { D}=i tu  
SortUtil.swap(queue,1,size--); C]@B~X1H^  
fixDown(1); PDiorW}]k  
} Ts *'f  
file://fixdown (?=(eo<N  
private void fixDown(int k) { ku8Z;ONeH  
int j;   rs KE  
while ((j = k << 1) <= size) { a*@Z^5f  
if (j < size %26amp;%26amp; queue[j] j++; 60gn`s,,  
if (queue[k]>queue[j]) file://不用交换 mTu9'/$(  
break; 5 BG&r*U  
SortUtil.swap(queue,j,k); CKK5+  
k = j; W;*vcbP  
} '<j p.sZQ  
} ? 9M+fi  
private void fixUp(int k) { B,qZwc|  
while (k > 1) { yD'h5)yu  
int j = k >> 1; &~6O;}\  
if (queue[j]>queue[k]) E&=?\KM  
break; M%LwC/h:,  
SortUtil.swap(queue,j,k); R1rfp;   
k = j; p_ y*-,W (  
} tg4&j$  
} %bETr"Xom  
)%W2XvG  
} 8U$UI  
jWjK-q@Y  
} }|,\ ?7,  
KPK!'4,cu  
SortUtil: 3om7LqcRo  
biuo.OG]  
package org.rut.util.algorithm; RB@gSHOc?  
@k;3$  
import org.rut.util.algorithm.support.BubbleSort; ;^SgV   
import org.rut.util.algorithm.support.HeapSort; 3W00,f^9  
import org.rut.util.algorithm.support.ImprovedMergeSort; KV(W|~+rM  
import org.rut.util.algorithm.support.ImprovedQuickSort; LA3,e (e  
import org.rut.util.algorithm.support.InsertSort; T"lqPbK  
import org.rut.util.algorithm.support.MergeSort; MO+0]uh:  
import org.rut.util.algorithm.support.QuickSort; Ft>8 YYyU  
import org.rut.util.algorithm.support.SelectionSort; l"g%vS,;`  
import org.rut.util.algorithm.support.ShellSort; "TCbO`mg  
e 2&i  
/** KAaeaiD  
* @author treeroot `qEm5+`  
* @since 2006-2-2 yL,B\YCf8  
* @version 1.0 !KW)*  
*/ z{_Vn(Kg   
public class SortUtil { TuR?r`P%  
public final static int INSERT = 1; FC .-u"V  
public final static int BUBBLE = 2; SQvB)NOw  
public final static int SELECTION = 3; EnAw8Gm*  
public final static int SHELL = 4; qWK7K%-$ E  
public final static int QUICK = 5; TUCp mj  
public final static int IMPROVED_QUICK = 6; 6XqO' G  
public final static int MERGE = 7; JH, +F  
public final static int IMPROVED_MERGE = 8; T 0C'$1T  
public final static int HEAP = 9; 6!m#_z8qG3  
0{uX2h  
public static void sort(int[] data) { 8z v6Mx  
sort(data, IMPROVED_QUICK); a_j#l(] 9  
} p =O1aM  
private static String[] name={ NX/)Z&Fx:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <o`]wOrl  
}; N_}Im>;!  
G*V 7*KC  
private static Sort[] impl=new Sort[]{ NsK>UJ'  
new InsertSort(), nr6U> KR^  
new BubbleSort(), eHIC'b.  
new SelectionSort(), SpQ6A]M gm  
new ShellSort(), WJ,ON-v  
new QuickSort(), =,9'O/br  
new ImprovedQuickSort(), nQMN2jM  
new MergeSort(), -I<`!kH*  
new ImprovedMergeSort(), o?\Pw9Y  
new HeapSort() l^Z~^.{y  
}; $RO=r90o  
g DIB'Y  
public static String toString(int algorithm){ fR{7780WZ  
return name[algorithm-1]; s_ $@N!  
} VNfx>&`  
h{9 pr  
public static void sort(int[] data, int algorithm) { JE!Xf}nEi  
impl[algorithm-1].sort(data); ~<-h# B  
} cFo-NI2  
1EB`6_>y  
public static interface Sort { s^< oU  
public void sort(int[] data); P]^] T}5  
} J]e&z5c  
2j|Eh   
public static void swap(int[] data, int i, int j) { P40eK0 e6  
int temp = data; S d -+a  
data = data[j]; *8+YR  
data[j] = temp; ru Lcu]  
} }Qo8Xps  
} b?,y%D) '  
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