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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。 s1XW}Dw  
插入排序: NQ$tQ#chd  
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package org.rut.util.algorithm.support; 6Cut[*lj^  
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import org.rut.util.algorithm.SortUtil; 9 |Iq&S  
/** 5B{O!SNd  
* @author treeroot FJ3Xeo s4|  
* @since 2006-2-2 >a98 H4  
* @version 1.0 /U[Y w)  
*/ )J+vmY~&  
public class InsertSort implements SortUtil.Sort{ Au'[|Pr r  
UA3%I8gu_  
/* (non-Javadoc) VIL #q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7>EjP&l  
*/ e[}R1/! L  
public void sort(int[] data) { 3`4g*wO  
int temp; )+[IR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y7)YJI  
} +x$;T*0  
} 9="i'nYp  
} QnikgV  
`P9vZR;  
} {{ M?+]p,^  
ZWW:-3  
冒泡排序: a  1bu  
4f~hd-z  
package org.rut.util.algorithm.support; u79.`,Ad&  
z%t>z9hU  
import org.rut.util.algorithm.SortUtil; Kx6_Vp  
]J)WcM:  
/** !8ub3oj)  
* @author treeroot eFvw9B+  
* @since 2006-2-2 4O[T:9mn0  
* @version 1.0 5nzk Zw  
*/ f+Nq?GvwBQ  
public class BubbleSort implements SortUtil.Sort{ yB(^t`)}N  
*iS<]y  
/* (non-Javadoc) ciI;U/V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n@w$5y1@  
*/ ;7&RmIXKh'  
public void sort(int[] data) { he&*N*of:  
int temp; y1^<!I  
for(int i=0;i for(int j=data.length-1;j>i;j--){ OUn,URI  
if(data[j] SortUtil.swap(data,j,j-1); y!fV+S,  
} <LQwH23@  
} )El#Ks5u  
} xlkEW&N&  
} C/ow{MxA  
WcAX/<Y>  
} n_sCZ6uXEQ  
/og2+!  
选择排序: 2@Jw?+}vr  
em<(wJ-Y  
package org.rut.util.algorithm.support; fZH:&EP  
?n>h/[/  
import org.rut.util.algorithm.SortUtil; fb4/LVg'J  
OT{wqNI  
/** nRN&u4  
* @author treeroot ~c,HE] B  
* @since 2006-2-2 >V@-tT"^:  
* @version 1.0 \kZxys!4  
*/ JadXdK=gE  
public class SelectionSort implements SortUtil.Sort { !6\{q M  
G/\t<>O8o  
/* Uaog_@2n,  
* (non-Javadoc) =l&7~  
* `omZ'n)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _/MHi-]/.  
*/ 0sto9n3  
public void sort(int[] data) { NMM0'tY~  
int temp; i]a0 "  
for (int i = 0; i < data.length; i++) { Wd?(B4{  
int lowIndex = i; 5X4; (Qj  
for (int j = data.length - 1; j > i; j--) { |"?0H#  
if (data[j] < data[lowIndex]) { ]re1$ W#*  
lowIndex = j; |7 ]v&?y  
} ir-srVoXy  
} )8p FPr  
SortUtil.swap(data,i,lowIndex); !"j?dQ.U;  
} |E&a3TQW  
} 03L+[F&"?  
1|l'oTAA  
} ?<bByxa  
X zgJ@  
Shell排序: 4,!#E0  
v^0D  
package org.rut.util.algorithm.support; <XiHQ B!  
"C&l7K;bp  
import org.rut.util.algorithm.SortUtil; pca `nN!  
wZ6LiYiHl  
/** 3#`_t :"A  
* @author treeroot cm@q{(r  
* @since 2006-2-2 :{bvCos<)  
* @version 1.0 |RS9N_eRt  
*/ Pky/fF7e  
public class ShellSort implements SortUtil.Sort{ w4P?2-kB  
SB0Cq  
/* (non-Javadoc) rg64f'+Eug  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tSran  
*/ pyYm<dn  
public void sort(int[] data) { xCGa3X  
for(int i=data.length/2;i>2;i/=2){ )0 UVT[7  
for(int j=0;j insertSort(data,j,i); /#lhRNX  
} =+;l>mn?O  
} ?~c=Sa-  
insertSort(data,0,1); E j`  
} Fv$5Zcf  
ui%B|b&&  
/** ,r^zDlS<q  
* @param data IA I!a1e!  
* @param j nb dm@   
* @param i x`~YTOfYk  
*/ 15dhr]8E  
private void insertSort(int[] data, int start, int inc) { ?!TFoD2'  
int temp; F3+ ;2GG2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MIma:N_c  
} 7niZ`doBA  
} .UX`@Q:Gp  
} 36"-cGNr{  
:0N} K}  
} 4FrP%|%E~  
E| eEAa  
快速排序: &iKy  
y0s=yN_  
package org.rut.util.algorithm.support; l@:Tw.+/9  
:Y wb  
import org.rut.util.algorithm.SortUtil; @A32|p}  
Xb#!1hA  
/** .5$"qb ?  
* @author treeroot iB4`w\-o  
* @since 2006-2-2 ;IyA"C(i  
* @version 1.0 rSu+zS7`X  
*/ D!7-(3R  
public class QuickSort implements SortUtil.Sort{ eka<mq|W  
qFQO1"mu  
/* (non-Javadoc) ,GO H8h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xf2|9Tqt  
*/ RZMR2fP%  
public void sort(int[] data) { 1N\/61+aA  
quickSort(data,0,data.length-1); 7pPaHX8  
} phCItN;  
private void quickSort(int[] data,int i,int j){ )?`G"( y  
int pivotIndex=(i+j)/2; d{/#A%.  
file://swap '#<4oW\]  
SortUtil.swap(data,pivotIndex,j); Q Ev7k  
a+mrsyM  
int k=partition(data,i-1,j,data[j]); jD}G9=[$1  
SortUtil.swap(data,k,j); *Aqd["q  
if((k-i)>1) quickSort(data,i,k-1); 2WO5Af%  
if((j-k)>1) quickSort(data,k+1,j); trx y3k;  
sdp3geBYo  
} ^(F@#zN}  
/** `\-<tk9  
* @param data ^sVr#T  
* @param i E .N@qMn~  
* @param j X+2uM+  
* @return gwGw  
*/ &9Kni/  
private int partition(int[] data, int l, int r,int pivot) { -UB XWl  
do{ ]\Z8MxFD  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6?(yMSKa  
SortUtil.swap(data,l,r); r'(*#  
} XCyU)[wY  
while(l SortUtil.swap(data,l,r); Fy 1- >~  
return l; gNHS:k\"  
} @{>0v"@  
"wy2u~  
} oGRd ;hsF  
Xj9\:M-  
改进后的快速排序: ?}e^-//*i  
`r'$l<(4WV  
package org.rut.util.algorithm.support; 1/f{1k  
N7u|< 0[  
import org.rut.util.algorithm.SortUtil; $b~[>S-Q  
hd*GDjmRQ/  
/** YK\pV'&+  
* @author treeroot S]&:R)#@  
* @since 2006-2-2  PI.Zd1r  
* @version 1.0 IeZ9 "o h  
*/ n)0M1o#  
public class ImprovedQuickSort implements SortUtil.Sort { [l/!&6  
j{j5TvsrY  
private static int MAX_STACK_SIZE=4096; 43 vF(<r&f  
private static int THRESHOLD=10; c@2a)S8Y]  
/* (non-Javadoc) OqWm5(u&S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dS8ydG2  
*/ Uc,MZV4  
public void sort(int[] data) { +%f6{&q$  
int[] stack=new int[MAX_STACK_SIZE]; 78\j  
hF{gN3v5  
int top=-1; .{t*v6(TP  
int pivot; Xj{gyLs  
int pivotIndex,l,r; F$-fj "jC  
Q6HghG  
stack[++top]=0; :c|Om{;  
stack[++top]=data.length-1; ^J&D)&"j  
k'_f?_PBu  
while(top>0){ IG{ lr  
int j=stack[top--]; 1tq ^W'  
int i=stack[top--]; m_;fj~m  
<(@Z#%O9)  
pivotIndex=(i+j)/2; Y=4 7se=h"  
pivot=data[pivotIndex]; -wrVEH8  
R`Fgne$4  
SortUtil.swap(data,pivotIndex,j); <S=( `D  
.'&pw }F  
file://partition 8Ji`wnkXe  
l=i-1; /* qx5$~  
r=j; w\MWr+4  
do{ cxQAp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,p3]`MG  
SortUtil.swap(data,l,r); z"T+J?V/  
} HAL\j 5i  
while(l SortUtil.swap(data,l,r); OX'V  
SortUtil.swap(data,l,j); .8Bu%Sf  
]\KVA)\  
if((l-i)>THRESHOLD){ SzIzQR93&  
stack[++top]=i; :Fm*WqZu  
stack[++top]=l-1; > SLQW  
} _}Qtx/Cg  
if((j-l)>THRESHOLD){ >O<a9wz  
stack[++top]=l+1; l;KrFJ6  
stack[++top]=j; } A+ncabm  
} "T_9_6tH  
a7c`[   
} /='0W3+o*L  
file://new InsertSort().sort(data); U+*l!"O,  
insertSort(data); VsJ+-IHm  
} 1Xo0(*O  
/** (D%vN&F  
* @param data kmc_%Wm}  
*/ ~h_ _Y>  
private void insertSort(int[] data) { u.|%@  
int temp; \wD/TLS}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CV\^gTPmx  
} EYn?YiVFU  
} w$/lq~zU  
} h$kz3r;b,"  
r&m49N,d  
} I]` RvT  
|YsR;=6wT  
归并排序: o_`6oC"s  
^7wqb'xg  
package org.rut.util.algorithm.support; 6FNGyvBU  
'x{oAtCP9  
import org.rut.util.algorithm.SortUtil; {=3A@/vM  
zwZvKV/g  
/** #lrwKHZ+  
* @author treeroot X+ITW#  
* @since 2006-2-2 2zqaR[C  
* @version 1.0 l>K+4  
*/ cN0 *<  
public class MergeSort implements SortUtil.Sort{ 1R3,Z8j'  
!DzeJWM|  
/* (non-Javadoc) #<< el;n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L&DjNu`!9  
*/ Sc]K-]1(H  
public void sort(int[] data) { iq*im$9 J  
int[] temp=new int[data.length]; F$)l8}  
mergeSort(data,temp,0,data.length-1); 2PYnzAsl  
} ;O% H]oN  
V\Gs&>  
private void mergeSort(int[] data,int[] temp,int l,int r){ @JXpD8jn  
int mid=(l+r)/2; O\.^H/  
if(l==r) return ; %h@1lsm1+  
mergeSort(data,temp,l,mid); F| eWHw?t  
mergeSort(data,temp,mid+1,r); 'KA$^  
for(int i=l;i<=r;i++){ 4?1Qe\A^  
temp=data; '";#v.!  
} ?).;cG:<  
int i1=l; n!4\w>h  
int i2=mid+1; yf9"Rc~+  
for(int cur=l;cur<=r;cur++){ z )'9[t  
if(i1==mid+1) h40;Q<D  
data[cur]=temp[i2++]; ##6\~!P  
else if(i2>r) .p! DVQ"a  
data[cur]=temp[i1++]; YK)m6zW5  
else if(temp[i1] data[cur]=temp[i1++]; gMI%!Y  
else }yK7LooM  
data[cur]=temp[i2++]; x6`mv8~9Db  
} H P.=6bJWi  
} R>O_2`c  
It[51NMal  
} c'i5,\ #X  
gSwV:hm  
改进后的归并排序: fgd2jr 3T  
x|a&wC2,{  
package org.rut.util.algorithm.support; iT :3e%  
Ob/)f)!!  
import org.rut.util.algorithm.SortUtil; y017 B<Ou  
:oZ<[#p"*  
/** 9s^$tgH  
* @author treeroot :awkhx  
* @since 2006-2-2 OP1` !P y  
* @version 1.0 Sv M\9  
*/ qUd7O](b=?  
public class ImprovedMergeSort implements SortUtil.Sort { AB'+6QU9k  
!^% 3  
private static final int THRESHOLD = 10; FB[b]+t`D{  
LG&BWs!  
/* D6Ad "|Z  
* (non-Javadoc) )k=KLQ\b  
* :')[pO_FW*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]gq)%T]  
*/  Lto*L X  
public void sort(int[] data) { &#2&V>pE  
int[] temp=new int[data.length]; fB3Jp~$  
mergeSort(data,temp,0,data.length-1); pq{`WgA^  
} "@&TC"YG0  
ekhv.;N~  
private void mergeSort(int[] data, int[] temp, int l, int r) { hN2A%ds*(j  
int i, j, k; A4tk</A  
int mid = (l + r) / 2;  pX_#Y)5  
if (l == r) _p*9LsN$L  
return; tVRN3fJH  
if ((mid - l) >= THRESHOLD) S[F06.(1  
mergeSort(data, temp, l, mid); -'$ob~*  
else :/T\E\Qr  
insertSort(data, l, mid - l + 1); 8 ??-H0P  
if ((r - mid) > THRESHOLD) a&_ h(  
mergeSort(data, temp, mid + 1, r); vN{@c(=g  
else '0D$C},^|8  
insertSort(data, mid + 1, r - mid); xG/Q%A  
J{ju3jo  
for (i = l; i <= mid; i++) { 4f\NtQ)  
temp = data; 5*%Gh&)  
} m8fj\,X  
for (j = 1; j <= r - mid; j++) { g,+ e3f  
temp[r - j + 1] = data[j + mid]; X`D2w:  
} h-P|O6@Ki  
int a = temp[l]; |'?vlUCd  
int b = temp[r]; `NW/Z/_  
for (i = l, j = r, k = l; k <= r; k++) { Vu5?;|^:  
if (a < b) { :oIBJ u%/  
data[k] = temp[i++]; %)lp]Y33  
a = temp; 3IMvtg  
} else { [ \_o_W  
data[k] = temp[j--]; :.x(( FU  
b = temp[j]; "|8oFf)l@B  
} @)U.Dbm  
} U>PZ3  
} kG>jb!e@(  
;MS.ag#  
/** ZQfxlzj+X  
* @param data @N Yl4N  
* @param l \(Sly&gL  
* @param i ^>IP"kF  
*/ {fXkbMO|  
private void insertSort(int[] data, int start, int len) { Nj>6TD81u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (TT=i  
} 6|jZv~rS$  
} 2`f{D~w  
} w<9rTHG8,  
} h]oUY.Pf  
*?X&Y8Kf  
堆排序: u<S`"MR:J  
#%E`~&[  
package org.rut.util.algorithm.support; K{P-+(  
,clbD4  
import org.rut.util.algorithm.SortUtil; #kC~qux^  
4eHSAN"$  
/** ,sL'T[tuiU  
* @author treeroot Z Ts*Y,  
* @since 2006-2-2 ETHcZ  
* @version 1.0 z&%i"IY  
*/ m# {'9 |  
public class HeapSort implements SortUtil.Sort{ '8q3ub<\  
z0 9Gp}^;  
/* (non-Javadoc) "h+Z[h6T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &O' W+4FAc  
*/ :'p)xw4K|  
public void sort(int[] data) { +dCDk* /m  
MaxHeap h=new MaxHeap(); 0/Q_% :  
h.init(data); \jC) ;mk  
for(int i=0;i h.remove(); 9lYKG ^#D  
System.arraycopy(h.queue,1,data,0,data.length); kd'b_D[$H  
} xk,Uf,,>  
x4q}xwH  
private static class MaxHeap{ v}$Q   
layxtECP(  
void init(int[] data){ q}@L"a`  
this.queue=new int[data.length+1]; oYu xkG  
for(int i=0;i queue[++size]=data; O=o}uB-*6  
fixUp(size); (K[{X0T  
} 9<Pg2#*N0  
} ^N={4'G)  
o[!'JUxZ  
private int size=0; MLdwf}[  
2b$>1O&2  
private int[] queue; V8n { k'  
,XT,t[w  
public int get() { ,%9XG077  
return queue[1]; Vh\_Ko\V5  
} }QI \K  
R{@saa5I(>  
public void remove() { UdO8KD#r3  
SortUtil.swap(queue,1,size--); SP%X@~d  
fixDown(1);  :xsZz$  
} Bq8#'K2i,  
file://fixdown xG sOnY;  
private void fixDown(int k) { ~}_^$l8#-Q  
int j; E/:U,u{  
while ((j = k << 1) <= size) { | #yu  
if (j < size %26amp;%26amp; queue[j] j++; if'=W6W  
if (queue[k]>queue[j]) file://不用交换  kORWj<  
break; zVE" 6  
SortUtil.swap(queue,j,k); mE<_oRM)  
k = j; kZ% AGc  
} iV{_?f1jo  
} (@^9oN~}  
private void fixUp(int k) { 45JL{YRN  
while (k > 1) { *Dg@fxCQ  
int j = k >> 1; Wg}KQ6 6  
if (queue[j]>queue[k]) >|SIqB<%:  
break; -m`|Sq  
SortUtil.swap(queue,j,k); Km5_P##  
k = j; L2VwW  
} fJ Ll-H  
} g}+|0FTV  
Mk*4J]PP  
} )la3GT*1mS  
RE t&QP  
} x]7:MG$  
V>Jr4z  
SortUtil: li*S^uSF  
N]W*ei  
package org.rut.util.algorithm; Nn_fhc>  
WDw<kX6p  
import org.rut.util.algorithm.support.BubbleSort; B!&5*f}*  
import org.rut.util.algorithm.support.HeapSort; /O[6PG  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2c Xae  
import org.rut.util.algorithm.support.ImprovedQuickSort; VN)WBv  
import org.rut.util.algorithm.support.InsertSort; vsI;ooR>  
import org.rut.util.algorithm.support.MergeSort; R2)@Q  
import org.rut.util.algorithm.support.QuickSort; :%gc Sm  
import org.rut.util.algorithm.support.SelectionSort; ':4ny]F  
import org.rut.util.algorithm.support.ShellSort; 4u5j 7`O  
]O|>nTa  
/** 0/ QDfA?  
* @author treeroot >v,X:B?+FL  
* @since 2006-2-2 od!44p]  
* @version 1.0 ranem0KQ)]  
*/ phDIUhL$z  
public class SortUtil { !{l% 3'2  
public final static int INSERT = 1; ?c8~VQaQ  
public final static int BUBBLE = 2; _f!ko<52  
public final static int SELECTION = 3; I[%IW4jJ  
public final static int SHELL = 4; EP38Ho=[  
public final static int QUICK = 5; Q h@Q6  
public final static int IMPROVED_QUICK = 6; 7#)k-S!B  
public final static int MERGE = 7; H r:*p6  
public final static int IMPROVED_MERGE = 8; `ulQ C  
public final static int HEAP = 9; R6<'J?k  
-)-: rRx-  
public static void sort(int[] data) { T.#_v# oM  
sort(data, IMPROVED_QUICK); j"jssbu}  
} 0Px Hf*  
private static String[] name={ JlSqTfA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S\Z*7j3;M  
}; S*Ea" vBA  
fS}Eu4Xe  
private static Sort[] impl=new Sort[]{ 2]fTDKh  
new InsertSort(), tM5(&cQ!d  
new BubbleSort(), z 4}"oQk:r  
new SelectionSort(), *$7^.eHfdd  
new ShellSort(), %ZRv+}z  
new QuickSort(), Z*Ffdh>*:&  
new ImprovedQuickSort(), Hl$qmq  
new MergeSort(), Q^{TcL8  
new ImprovedMergeSort(), g(P7CX+y  
new HeapSort() /,I?"&FWc  
}; u4lM>(3Y}  
^fKKsfIf  
public static String toString(int algorithm){ .yF-<Y  
return name[algorithm-1]; H'S~GP4D  
} m& AbH&;  
Cnpl0rV~5  
public static void sort(int[] data, int algorithm) { {ZUk!o>m@  
impl[algorithm-1].sort(data); :/6:&7s  
} p cD}SY  
%#% YU|4R  
public static interface Sort { ,8*A#cT B  
public void sort(int[] data); <w&'E6mU  
} 0084`&Ki  
G$ zY&  
public static void swap(int[] data, int i, int j) { 0of:tZU  
int temp = data; 23LG)or.JC  
data = data[j]; ]>)}xfL &,  
data[j] = temp; u9;3Xn8  
} e|A=sCN-  
} %w_MRC  
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