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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。 De:w(Rm  
插入排序: T7cT4PAW  
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package org.rut.util.algorithm.support; S)JZ b_  
j cx/ZR  
import org.rut.util.algorithm.SortUtil; Yn1U@!  
/** !jYV,:'  
* @author treeroot h`3;^T  
* @since 2006-2-2 )-9|3`  
* @version 1.0 uVOpg]8d  
*/  w8FZXL  
public class InsertSort implements SortUtil.Sort{ TSHp.ABf  
8 _`Lx_R  
/* (non-Javadoc) ?:n{GK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tGM)"u-  
*/ Vy-S9=  
public void sort(int[] data) { l*%voKZG  
int temp; 4Z]^v4vb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  4uU(t  
} =bv8W < #  
} '[\%P2c)Q  
} *p.ELI1IC  
[k."R@?  
} o#0NIn"GS/  
)2rI/=R  
冒泡排序: :peBQ{bj  
&[RC4^;\V  
package org.rut.util.algorithm.support; RA.@(DN&  
vkbB~gr@*  
import org.rut.util.algorithm.SortUtil; qc*+;Wi+5  
xW"J@OiKL  
/** Mh3zl  
* @author treeroot m\@Q/_ v  
* @since 2006-2-2 ;]n U->  
* @version 1.0 V!FzVl=G  
*/ ]p0m6}B  
public class BubbleSort implements SortUtil.Sort{ i1aS2gFi_  
 pLyX9C  
/* (non-Javadoc) to:hMd1T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *jA%.F  
*/ Hyee#fB  
public void sort(int[] data) { @Cqg 2  
int temp; ZTt% 7K"L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $RA"NIZ:!  
if(data[j] SortUtil.swap(data,j,j-1); \dufKeiS&a  
} 8|7Tk[X1j  
} |C-B=XE;3  
} O5k's  
} wQ [2yq  
uLL#(bhDr  
} Tb{,WUJg2  
UbQeN  
选择排序: 7Jc=`Zm'  
g3x192f  
package org.rut.util.algorithm.support; RJtSHiM2  
DC/CUKE.d  
import org.rut.util.algorithm.SortUtil; 3)dT+lZ  
vv%Di.V  
/** !L3Bvb;Q  
* @author treeroot ~{d94o.  
* @since 2006-2-2 \19XDqf8  
* @version 1.0 6[qRb+ds  
*/ N?87Bd  
public class SelectionSort implements SortUtil.Sort { Jw {:1  
@ZX{q~g!  
/* VK`b'U &l"  
* (non-Javadoc) 2ix_,yTO  
* 1N#TL"lMS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qRB%G<H  
*/ w_|WberU  
public void sort(int[] data) { iZ_R oJ  
int temp; 7 ic]q,  
for (int i = 0; i < data.length; i++) { 4 &t6  
int lowIndex = i; K90Zf  
for (int j = data.length - 1; j > i; j--) { ]7xAL7x  
if (data[j] < data[lowIndex]) { wz6e^ g  
lowIndex = j; [N7[%iQ%  
} "aa6W  
} 1bj75/i<6  
SortUtil.swap(data,i,lowIndex); 1U"Y'y2  
} lfI[r|  
} "_q5\]z\O  
u)Y#&qA  
} 9`09.`U9[  
& 6}vvgz  
Shell排序: 3:=XU9p)x  
?58pkg J  
package org.rut.util.algorithm.support; ^i:%;oeG  
4Nq n47|>e  
import org.rut.util.algorithm.SortUtil; y8<,>  
Wm3H6o*  
/** {z.}u5N  
* @author treeroot MuO>O97  
* @since 2006-2-2 q2/Vt0aYx  
* @version 1.0 SULWPH5Pr  
*/ u\t ;  
public class ShellSort implements SortUtil.Sort{ C($`'~b  
~:+g+Mf~[  
/* (non-Javadoc) E+7S:B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T>?sPq  
*/ 93'%aSDI%  
public void sort(int[] data) { h+*  
for(int i=data.length/2;i>2;i/=2){ hc[GpZcw,  
for(int j=0;j insertSort(data,j,i); ~i  &K,  
} Y%&6qt G  
} XriVHb  
insertSort(data,0,1); H!45w;,I  
} ~$Mp>ZB2W  
JBWiTUk  
/** ZFdQ Z=.'  
* @param data w=^*)jZ8  
* @param j VVe>}  
* @param i ( bBetX  
*/ Y<0f1N  
private void insertSort(int[] data, int start, int inc) { 9r8{9h:  
int temp; ec]ksw6T+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); - z|idy{  
} BO{J{  
} L;z-,U$;%R  
} {yG)Ii  
8D+OF 6CM  
} <MfB;M  
z5{I3 Y!1  
快速排序: <o]tW4\(R  
pH"LZ7)DI0  
package org.rut.util.algorithm.support; qKSM*k~  
CMF1<A4]  
import org.rut.util.algorithm.SortUtil; r/{VL3}F_e  
_;@kS<\N  
/** J'7){C"G$  
* @author treeroot dmF<J>[  
* @since 2006-2-2 c/x(v=LW  
* @version 1.0 $[|8bE  
*/ "0/OpT7h7  
public class QuickSort implements SortUtil.Sort{ [tBIABr  
tDi=T]-bt  
/* (non-Javadoc) M(2[X/t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H$[--_dI{  
*/ JdV!m`XpXy  
public void sort(int[] data) { goHr# @  
quickSort(data,0,data.length-1); I;xT yhUd  
} S`*al<m  
private void quickSort(int[] data,int i,int j){ 6l>G>)  
int pivotIndex=(i+j)/2; F1,pAtA  
file://swap qi)(\  
SortUtil.swap(data,pivotIndex,j); Hu'c )|~f  
aG" UV\  
int k=partition(data,i-1,j,data[j]); kv'n W  
SortUtil.swap(data,k,j); i "-#1vy=  
if((k-i)>1) quickSort(data,i,k-1); @*c+`5)_  
if((j-k)>1) quickSort(data,k+1,j); O&O1O> [p1  
|]I?^:I  
} )v|a:'%K_  
/** (Hn,}(3S  
* @param data ;nC+K z:  
* @param i $h$+EE!  
* @param j DvhK0L*Qr  
* @return YqDw*S{  
*/ L~yy;)]W  
private int partition(int[] data, int l, int r,int pivot) { R UX  
do{ @lmke>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,)QmQ ^/  
SortUtil.swap(data,l,r); 8l}|.Q#--  
} k5ZwGJ#r  
while(l SortUtil.swap(data,l,r); 3^fZUldf  
return l; AOfQqGf  
} da-3hM!u+  
k?";$C}#  
} -(59F  
j"NqNv  
改进后的快速排序: ^|x{E20  
bqe;) A7  
package org.rut.util.algorithm.support; lLg23k{'  
yV]-![`D  
import org.rut.util.algorithm.SortUtil; 2.NzB7c*CM  
r@!~l1$s`  
/** T2Vj &EA@  
* @author treeroot F_-yT[i  
* @since 2006-2-2 =-q)I[4#  
* @version 1.0 =djzE`)0  
*/ {#;6$dU;(  
public class ImprovedQuickSort implements SortUtil.Sort { BHK_=2WYz  
vAVoFL  
private static int MAX_STACK_SIZE=4096; GN>T }  
private static int THRESHOLD=10; +V'Z%;/  
/* (non-Javadoc) WK=!<FsC$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1/{:}9Z@  
*/ 2HTZ, W  
public void sort(int[] data) { I@z{G r  
int[] stack=new int[MAX_STACK_SIZE]; -~aVt~{k/  
|FNP~5v  
int top=-1; ;N j5NB7  
int pivot; 2+^#<Uok  
int pivotIndex,l,r; 6#K_Rg>.  
f{)*"  
stack[++top]=0; ML'R[~|  
stack[++top]=data.length-1; AX&1-U  
Z@h]dU5%a  
while(top>0){ $:xUXEi{  
int j=stack[top--]; e@q[Dv'mu  
int i=stack[top--]; +}1]8:>cq  
ooD/QZUE  
pivotIndex=(i+j)/2; Yw{](qG7e`  
pivot=data[pivotIndex]; gz88$BT  
d5i /:  
SortUtil.swap(data,pivotIndex,j); /!E /9[V  
T0SD|'  
file://partition JRNyvG>j  
l=i-1; XkNi 'GJf  
r=j; d_yqmx?w  
do{ ud.S, 8Sy  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Im Tq`  
SortUtil.swap(data,l,r); JhD8.@} b~  
} Jsw<,uT D  
while(l SortUtil.swap(data,l,r); cvC;QRx  
SortUtil.swap(data,l,j); eHjR/MMr_  
)GR^V=o7,Y  
if((l-i)>THRESHOLD){ >!oN+8[~  
stack[++top]=i; g3 qtWS  
stack[++top]=l-1; YGNX+6Lz  
} 0J_x*k6  
if((j-l)>THRESHOLD){ )8vcg{b{d  
stack[++top]=l+1; \q,w)BE  
stack[++top]=j; CtE".UlCA  
} c#rbyx?5  
7N""w5  
} m t*v@'l.  
file://new InsertSort().sort(data); ^L[Z+7|  
insertSort(data); e;gf??8}  
} pGOS'.K%t8  
/** ilNm\fQ.  
* @param data D QZS%)  
*/ Y>z(F\  
private void insertSort(int[] data) { :<jf}[w!  
int temp; R8?A%yxf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^ZV xBQKg  
} 5 Fd]3  
} ?Z.YJXoKZ  
} 6Qo6 T][  
LyQO_mT2  
} uIba{9tM"P  
uD5i5,q1Hs  
归并排序: @hv9 =v+  
qVY\5`f@  
package org.rut.util.algorithm.support; H;Bj\-Pa  
>:K3y$]_  
import org.rut.util.algorithm.SortUtil; q!7\`>.2:{  
Oc8+an1m  
/** :3G9YjzC}  
* @author treeroot f8n'9HOw>  
* @since 2006-2-2 C= Zuy^  
* @version 1.0 Z-~^)lo  
*/ F )tNA?p)  
public class MergeSort implements SortUtil.Sort{ .K0BK)axO  
Pgo5&SQb  
/* (non-Javadoc) !cq4+0{O;&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !K@y B)9  
*/ Obd!  
public void sort(int[] data) { N7e^XUG   
int[] temp=new int[data.length]; 'z\F-Ttq  
mergeSort(data,temp,0,data.length-1); ]A\n>Z!;  
} 6z(_^CY  
H1@"Yg8  
private void mergeSort(int[] data,int[] temp,int l,int r){ jXdn4m/O  
int mid=(l+r)/2; E8503  
if(l==r) return ;  aCTVY1  
mergeSort(data,temp,l,mid); cbIW>IbM  
mergeSort(data,temp,mid+1,r); E>[~"~x"pV  
for(int i=l;i<=r;i++){ *R:nB)(6<  
temp=data; 5|/vc*m_0'  
} m1cyCD  
int i1=l; nQgn^z#  
int i2=mid+1; 7z$+ *]9-  
for(int cur=l;cur<=r;cur++){ v:+se6HY?p  
if(i1==mid+1) 4SOj>(a#  
data[cur]=temp[i2++]; D?E5p.!A  
else if(i2>r) ZqhINM*Rm  
data[cur]=temp[i1++]; Xu T|vh  
else if(temp[i1] data[cur]=temp[i1++]; ="4jk=on  
else G%P]qi  
data[cur]=temp[i2++];  'dg OE  
} C/cyqxVl}  
}  "3v%|  
d,>l;l  
} /q^( uWu  
E6US  
改进后的归并排序: 9DT}sCLz:B  
Z]6D0b  
package org.rut.util.algorithm.support; oDRNM^gz  
}`eeItI+  
import org.rut.util.algorithm.SortUtil; 1|`9Hp6  
&Y,Rm78  
/** Z# :Ww  
* @author treeroot 1-,l|K  
* @since 2006-2-2 )Y:CV,`  
* @version 1.0 f"-?%I*'  
*/ )oNomsn  
public class ImprovedMergeSort implements SortUtil.Sort { &oR&NKk  
'J\%JAR@  
private static final int THRESHOLD = 10; yZ2,AR%  
MdPwuXI  
/* 4f1*?HX&  
* (non-Javadoc) !nd*U}q  
* 2{%BQq>C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3sL#_@+yz  
*/ ~vt8|OOo0  
public void sort(int[] data) { h?SUDk:2^  
int[] temp=new int[data.length]; [m4<j  
mergeSort(data,temp,0,data.length-1); ':fVb3A[*d  
} 4f>Vg$4  
qzH97<M}T  
private void mergeSort(int[] data, int[] temp, int l, int r) { R{WG>c  
int i, j, k; t & ucq Y  
int mid = (l + r) / 2; T|=8 jt,  
if (l == r) E;X'.7[c  
return; 's9)\LS>p  
if ((mid - l) >= THRESHOLD) sPhh#VCw{  
mergeSort(data, temp, l, mid); +F@9AO>LF  
else $DQMN  
insertSort(data, l, mid - l + 1);  g6~uf4;  
if ((r - mid) > THRESHOLD) c~Ha68  
mergeSort(data, temp, mid + 1, r); Vw,dHIe(3  
else *AJW8tIP  
insertSort(data, mid + 1, r - mid); Kg%_e9nj#  
tV T(!&(  
for (i = l; i <= mid; i++) { _ '}UNIL  
temp = data; ~+1t 17  
} J4JKAv~3  
for (j = 1; j <= r - mid; j++) { Y`_6Ny="  
temp[r - j + 1] = data[j + mid]; p3-sEIw}Ru  
} :JOF!Q  
int a = temp[l]; wvgX5P>  
int b = temp[r]; $}jSIn=~|t  
for (i = l, j = r, k = l; k <= r; k++) { 6g!t1%Kb  
if (a < b) { #]Cr zLe  
data[k] = temp[i++]; ^v`|0z\  
a = temp; +`9T?:fu  
} else { Bkcs4 x  
data[k] = temp[j--]; 8 /\rmf\  
b = temp[j]; T+gqu &9R  
} *%MY. #  
} GB{%4)%6  
} :_vf1>[  
g{i( 4DHm(  
/** [WB8X,  
* @param data \Q & Kd|  
* @param l Q2+e`  
* @param i ,H|V\\  
*/ Iz  ,C!c  
private void insertSort(int[] data, int start, int len) { \oaO7w,:"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yDHH05Yl  
} }3QEclZr  
} yYW>)  
} w 5,-+&;  
} U/TF,JUI  
`M|fwlAJQ  
堆排序: C`DTPoXN  
O8M;q!)y  
package org.rut.util.algorithm.support; 9]|cs  
@Gl=1  
import org.rut.util.algorithm.SortUtil; <Nkj)`%5iK  
T[c ;},  
/** zEa3a  
* @author treeroot p-;*K(#X  
* @since 2006-2-2 ] @IzJz"R  
* @version 1.0 \[Q,>{^  
*/ RU@`+6 j+  
public class HeapSort implements SortUtil.Sort{ pvcD 61,  
\`x$@s?  
/* (non-Javadoc) qi$6y?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yQh":"$k  
*/ VJm).>E3k  
public void sort(int[] data) { g#:?Ay-m  
MaxHeap h=new MaxHeap(); ':J[KWuV  
h.init(data); [X;yJ$  
for(int i=0;i h.remove(); cE[4CCpy  
System.arraycopy(h.queue,1,data,0,data.length); 3>-^/  
} }]/"auk  
n)[{nkS6[  
private static class MaxHeap{ )f,iey\-  
yv&&x.!.Z  
void init(int[] data){ Fd0R?d  
this.queue=new int[data.length+1]; !hEt UF  
for(int i=0;i queue[++size]=data; l+RBe<Mq  
fixUp(size); (rvK@  
} 1_f(;WOg  
} >12phLu  
l&[x)W  
private int size=0; eR =P  
Hh,q)(Wo  
private int[] queue; L%Me wU0TZ  
 \&"gCv#  
public int get() { U+URj <)  
return queue[1]; fgq#Oi}  
} &h')snp:#  
>q "mI6F  
public void remove() { RlC|xj"l%  
SortUtil.swap(queue,1,size--); O*X ]oX  
fixDown(1); A-qdTJP  
} pm@Mlwg`1  
file://fixdown 3N[t2Y1r  
private void fixDown(int k) { H W)> `  
int j; pFx7URZA  
while ((j = k << 1) <= size) { [a`89'"z  
if (j < size %26amp;%26amp; queue[j] j++; >6KuZ_  
if (queue[k]>queue[j]) file://不用交换 7"FsW3an  
break; bU7n1pzW,o  
SortUtil.swap(queue,j,k); :!n_a*.{  
k = j; I ze+](  
} ]-&A )M6  
} V+(1U|@~  
private void fixUp(int k) { !0i  
while (k > 1) { jEo)#j];`<  
int j = k >> 1; uD}Q}]Z  
if (queue[j]>queue[k]) !g'kWE[  
break; a~>+I~^K5q  
SortUtil.swap(queue,j,k); 9'Le}`Gf  
k = j; N8#wQ*MM>  
} -c{O!z6sX  
} 'S;INs2|->  
&gR)Y3  
} eVGO6 2|!  
B<%cqz@  
} u $O` \=  
*c3(,Bmw  
SortUtil: 5_!s\5  
*j6K QZ"  
package org.rut.util.algorithm; clV3x` z  
db -h=L|  
import org.rut.util.algorithm.support.BubbleSort; C0(?f[/(M  
import org.rut.util.algorithm.support.HeapSort; OX-t#R`  
import org.rut.util.algorithm.support.ImprovedMergeSort; P{-j ^'y  
import org.rut.util.algorithm.support.ImprovedQuickSort; G)t_;iNL|  
import org.rut.util.algorithm.support.InsertSort; o<cg9  
import org.rut.util.algorithm.support.MergeSort; 1DLAfsLlj  
import org.rut.util.algorithm.support.QuickSort; 6V-u<FJ  
import org.rut.util.algorithm.support.SelectionSort; E^qJ5pr_P  
import org.rut.util.algorithm.support.ShellSort; y(^t&tgjS  
KPHtD4  
/** T+1:[bqK  
* @author treeroot tpPP5C{  
* @since 2006-2-2 X$BN &DD  
* @version 1.0 A{NKHn>%`  
*/ Sqn|  
public class SortUtil { ,Pi!%an w  
public final static int INSERT = 1; sE:~+C6o:  
public final static int BUBBLE = 2; VW&EdrR,S  
public final static int SELECTION = 3; EdcbWf7  
public final static int SHELL = 4; aG_@--=  
public final static int QUICK = 5; Bm"-X:='  
public final static int IMPROVED_QUICK = 6; ,=>Ws:j  
public final static int MERGE = 7; +{#65 z  
public final static int IMPROVED_MERGE = 8; /]pJ(FFC  
public final static int HEAP = 9; w2X0.2)P2  
/{Mo'.=Z  
public static void sort(int[] data) { 03p D<  
sort(data, IMPROVED_QUICK); <fS WX>pR  
} aW=c.Q.  
private static String[] name={ @I"&k!e<2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0{Uc/  
}; Eqizx~eqq  
 m#K)%0  
private static Sort[] impl=new Sort[]{ }Wlm#t  
new InsertSort(), L h@0|k  
new BubbleSort(), c~``)N  
new SelectionSort(), f4 k  
new ShellSort(), e'I/}J  
new QuickSort(), (/gv U80  
new ImprovedQuickSort(), c V$an  
new MergeSort(), a_Sp}s<J  
new ImprovedMergeSort(), FP=up#zl  
new HeapSort() ,ArHS  
}; qPQ6`rD\  
U1ZKJ<pv  
public static String toString(int algorithm){ %cO^:  
return name[algorithm-1]; 7F5v-/  
} f`<elWgc"  
2x5^kN7  
public static void sort(int[] data, int algorithm) { ,Iv eKk5W  
impl[algorithm-1].sort(data); ~ k"r  
} ^yLhL^Y  
ThvgYv--B  
public static interface Sort { dvAG}<  
public void sort(int[] data); 22OfbwCb  
} q\pI&B  
vmzc0J+3p  
public static void swap(int[] data, int i, int j) { #Z. QMWq  
int temp = data; o;TS69|D  
data = data[j]; VQ"Z3L3-4  
data[j] = temp; !n7'TM '  
} CZ 33|w  
} Kpg?' !I  
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