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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。 YB"gLv?  
插入排序: zR<{z  
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package org.rut.util.algorithm.support; pG#tMec  
98Vv K?  
import org.rut.util.algorithm.SortUtil; p(n0(}eVC'  
/** ~6f/jCluR%  
* @author treeroot vwT1bw.  
* @since 2006-2-2 J@2jx4   
* @version 1.0 5p#0K@`n/  
*/ ESCN/ocV  
public class InsertSort implements SortUtil.Sort{ q`1tUd4G  
#kv9$  
/* (non-Javadoc) 8g0 #WV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6TW<,SM  
*/ ] `$6=) _X  
public void sort(int[] data) { IU8zidn&  
int temp; cb^IJA9}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $5i\D rs  
} ~^2w)-N  
} 6CyByj&  
} oJTEN}fL  
Ak?9a_f  
} uOv<*Jld*  
KR ( apO  
冒泡排序: PEI$1,z  
=Fz mifTc  
package org.rut.util.algorithm.support; 8xLQ" l+"  
@&m [w'tn  
import org.rut.util.algorithm.SortUtil; NPH(v`  
FEk9a^Xyx  
/** rN&fFI  
* @author treeroot ^aB;Oo  
* @since 2006-2-2 [)I^v3]U  
* @version 1.0 S%\5"uGa  
*/ +ywz@0nx  
public class BubbleSort implements SortUtil.Sort{ HIc;Lc8$  
Z;uKnJh  
/* (non-Javadoc) zeMV_rW~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8'Q+%{?1t  
*/ XZOBK^,5^B  
public void sort(int[] data) { C1;uAw?\  
int temp; .4a|^ vT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jA,y.(mR  
if(data[j] SortUtil.swap(data,j,j-1); m~+.vk  
} NOTG|\{  
} -U2Su|:\N8  
} (]q ([e  
} X?haHM#]  
/RB%m8@;  
} 7**zb"#y  
j0L%jz  
选择排序: &b@_ah+f  
K>'4^W5d,  
package org.rut.util.algorithm.support; (Mfqzy  
TIp\-  
import org.rut.util.algorithm.SortUtil; ^6 l5@#)w  
usc/DQ1  
/** Kh3i.gm7g  
* @author treeroot {Vu=qNx  
* @since 2006-2-2 /uWUQ#9  
* @version 1.0 niS\0ZA  
*/ YMw,C:a4  
public class SelectionSort implements SortUtil.Sort { (h wzA *(c  
@>z.chM;  
/* <IZr..|O  
* (non-Javadoc) t 9(,JC0  
* q,sO<1wAT\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $D`Kz*/.  
*/ 3mo<O}}  
public void sort(int[] data) { gkK(7=r%  
int temp; EZWWv L  
for (int i = 0; i < data.length; i++) { PlCw,=K8f  
int lowIndex = i; Ls2,+yo]>  
for (int j = data.length - 1; j > i; j--) { Idu'+O4  
if (data[j] < data[lowIndex]) { eV_ ",W  
lowIndex = j; MTwzL<@$  
} b|87=1^m[  
} [p4([ef '  
SortUtil.swap(data,i,lowIndex); x<t ?Yc9  
} VN-0hw/A  
} PdKcDKJ  
*/{y%  
} c:=HN-*vQ  
R UCUEo63  
Shell排序: |3k r*#  
VnN(lJ  
package org.rut.util.algorithm.support; :2 \NG}  
G$)q% b;Lz  
import org.rut.util.algorithm.SortUtil; HE*^!2f  
bv7)[,i  
/** xz`0V}dPl  
* @author treeroot g1XpERsSEV  
* @since 2006-2-2 JSFNn]z2P  
* @version 1.0 *[>{ 9V  
*/ 0]ai*\,W7~  
public class ShellSort implements SortUtil.Sort{ sfVzVS[  
`_&vvJPn@!  
/* (non-Javadoc) 1&h\\&ic  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nVpDjUpN  
*/ "wVisL2+.  
public void sort(int[] data) { )[99SM   
for(int i=data.length/2;i>2;i/=2){ 2L<1]:I  
for(int j=0;j insertSort(data,j,i); ,wr5DQ  
} ZHRMW'Ne  
} B|syb!g  
insertSort(data,0,1); Bz{"K  
} /?>W\bP<  
An]Vx<PD  
/** -Nr*na^H9#  
* @param data  <}^p5|  
* @param j )1R[~]y  
* @param i MHE/#G  
*/ P/S,dhs(  
private void insertSort(int[] data, int start, int inc) {  de8xl  
int temp; >8NUji2I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >d;U>P5.  
} O>*Vo!z\f  
} ,jnaa(n  
} V%*91t_  
:MYLap&L&  
}  zW?=^bE  
~- aUw}U  
快速排序: }w=|"a|,  
a'q&[08  
package org.rut.util.algorithm.support; {h|kx/4{m  
Ct(^nn$A  
import org.rut.util.algorithm.SortUtil; RSe av  
= g%<xCp  
/** 8&hxU@T~  
* @author treeroot rZAP3)dA  
* @since 2006-2-2 9G1ZW=83  
* @version 1.0 P(\x. d:  
*/ vqF=kB"P  
public class QuickSort implements SortUtil.Sort{ F.Bij8\  
!;t6\Z8&  
/* (non-Javadoc) X&Ospl@H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6EY 0Fjsi  
*/ nBd(p Oe  
public void sort(int[] data) { >TGc0 z+  
quickSort(data,0,data.length-1); Eb'M< ZY  
} t@2MEo  
private void quickSort(int[] data,int i,int j){ 5HB*  
int pivotIndex=(i+j)/2; ocS}4.a@  
file://swap RdjoVCf  
SortUtil.swap(data,pivotIndex,j); ,7d#t4  
7OPRf9+o  
int k=partition(data,i-1,j,data[j]); `OZiN;*|  
SortUtil.swap(data,k,j); 1k%HGQM{  
if((k-i)>1) quickSort(data,i,k-1); <\d`}A:&  
if((j-k)>1) quickSort(data,k+1,j); C szZr>Z  
1vh[sKv9%  
} >2'A~?%  
/** A/Sj>Y1j  
* @param data N7q6pBA"E  
* @param i B90fUK2g  
* @param j qus%?B{b}  
* @return ubKp P%Z  
*/ i:&$I=  
private int partition(int[] data, int l, int r,int pivot) { e=!sMWx6  
do{ P#:nXc$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9*s:Vff{  
SortUtil.swap(data,l,r); Q{ g{  
} eS%8WmCV9<  
while(l SortUtil.swap(data,l,r); fG@]G9Z  
return l; ey:%Zy [~  
} ##" Hui  
v# fny  
} _GoFwVO  
Lq#!}QcW=  
改进后的快速排序: b$/7rVH!  
R_80J=%0  
package org.rut.util.algorithm.support; f?QP(+M5.  
Tkj F /zv  
import org.rut.util.algorithm.SortUtil; /mn'9=ks  
}+:X=@Z@  
/** 7Zft]C?|@  
* @author treeroot *y~~~ 'J/  
* @since 2006-2-2 e\ZV^h}TQ  
* @version 1.0 gP!k[E ,Q8  
*/ QNZ#SG8  
public class ImprovedQuickSort implements SortUtil.Sort { bz`rSp8h  
H=XdgOui  
private static int MAX_STACK_SIZE=4096; :c:}_t{%  
private static int THRESHOLD=10;  bIuOB|  
/* (non-Javadoc) b-J6{=k^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5^{2 g^jH6  
*/ Sq`Zuu9t  
public void sort(int[] data) { !W b Q9o  
int[] stack=new int[MAX_STACK_SIZE]; 6anH#=(  
y=}o|/5"  
int top=-1; _Q*,~ z~  
int pivot; OL.{lKJ3DV  
int pivotIndex,l,r; 7Xh ;dJAF3  
+~xzgaL  
stack[++top]=0; ,y)V5 c1  
stack[++top]=data.length-1; L7yEgYB  
F~GIfJU  
while(top>0){ AI$\wp#aw  
int j=stack[top--]; *b`1+~p_2  
int i=stack[top--]; &<(&u`S  
'qoaMJxN`  
pivotIndex=(i+j)/2; bW GMgC  
pivot=data[pivotIndex]; Rf!$n7& \  
 ,}^FV~  
SortUtil.swap(data,pivotIndex,j); Rz<'& Z>;  
"!#KQ''R  
file://partition H96|{q=  
l=i-1; Jb|dpu/e  
r=j; k7nke^,|  
do{ ?{1& J9H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hr(%y&0  
SortUtil.swap(data,l,r); 7\i> >  
} DNRWE1P2bg  
while(l SortUtil.swap(data,l,r); : TP\pH7E  
SortUtil.swap(data,l,j); 7! /+[G  
g9F?j  
if((l-i)>THRESHOLD){ iG{xDj{CKv  
stack[++top]=i; 6^,;^   
stack[++top]=l-1; FD8d-G  
} LKM;T-  
if((j-l)>THRESHOLD){ >B$B|g~  
stack[++top]=l+1; MVDy|i4  
stack[++top]=j; p%+'iDb  
} _"#n%@  
5~RR _G  
} xQxq33\  
file://new InsertSort().sort(data); mfk^t`w_  
insertSort(data); .6pVt_f0/  
} V+$fh2t  
/** 1+Q@RiW  
* @param data S0lt _~  
*/ XrGP]k6.^  
private void insertSort(int[] data) { % 3<7HY]~  
int temp; 15kkf~Z<t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,a ":/ /[  
} 3 t+1M  
} tf>"fU\P  
} 55zy]|F"  
"8\2w]"  
} _rW75n=3b7  
d M;v39  
归并排序: .|KBQMI  
/Uni6O)oc  
package org.rut.util.algorithm.support; tPFj[Y~Iy  
eI/5foA  
import org.rut.util.algorithm.SortUtil; vSwRj<|CF  
(~?p`g+I.P  
/** [`!%u3  
* @author treeroot n"Wlfd0  
* @since 2006-2-2 *~`BG5w  
* @version 1.0 sc y_  
*/ CWSc#E  
public class MergeSort implements SortUtil.Sort{ Bm +Ca:p%  
,Y7QmbX^  
/* (non-Javadoc) Bk/&H-NI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fzy5k?R  
*/ q!YAA\'31  
public void sort(int[] data) { X?'pcYSL  
int[] temp=new int[data.length]; 1;~| [C  
mergeSort(data,temp,0,data.length-1); 9D7i>e%,;-  
} !9_'_8  
,k}(]{ -  
private void mergeSort(int[] data,int[] temp,int l,int r){ ggy9euWV  
int mid=(l+r)/2; CsN^u H  
if(l==r) return ; cT nC  
mergeSort(data,temp,l,mid); V}Ce3wgvA  
mergeSort(data,temp,mid+1,r); FQ u c}A  
for(int i=l;i<=r;i++){ *eMMfxFl  
temp=data; C40o_1g  
} 8Y/1+-  
int i1=l; %m-U:H.Vp  
int i2=mid+1; 8;x0U`}Ez(  
for(int cur=l;cur<=r;cur++){ HmbQL2  
if(i1==mid+1) $#E!/vVwD7  
data[cur]=temp[i2++]; N{uVh;_  
else if(i2>r) ipS:)4QFxJ  
data[cur]=temp[i1++]; -[[( Zx  
else if(temp[i1] data[cur]=temp[i1++]; zxeT{AFPr?  
else wJh/tb=$o  
data[cur]=temp[i2++]; ?H eUU  
} <,y> W!  
} e s<  
TrBW0Bn>p  
} U|x#'jGo'  
H^M>(kT#&  
改进后的归并排序: Cl!9/l?z  
mB"1QtD  
package org.rut.util.algorithm.support; 1o?uf,H7O  
;*WG9Y(W  
import org.rut.util.algorithm.SortUtil; -! ^D8^s  
rl]K :8*  
/** e/}4Pt  
* @author treeroot 5t-, 5  
* @since 2006-2-2 S:1g(f*85  
* @version 1.0 ,( NN)Oj  
*/ h=B= J  
public class ImprovedMergeSort implements SortUtil.Sort { \}_,g  
- B?c F9  
private static final int THRESHOLD = 10; aP#/%  
\J;_%-Z  
/* I:("f+ H  
* (non-Javadoc) DKF '*  
* 5<YL^m{/L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tTWEhHQ`  
*/ ;*0?C'h=  
public void sort(int[] data) { !@ {sM6U  
int[] temp=new int[data.length]; -F MonM  
mergeSort(data,temp,0,data.length-1); fg4mP_  
} U*?`tdXJ$  
%*#+(A"V  
private void mergeSort(int[] data, int[] temp, int l, int r) { `@#rAW D  
int i, j, k; b7B|$T,  
int mid = (l + r) / 2; YLuf2ja}X  
if (l == r) ',/2J0_  
return; 2OQ\ z;s  
if ((mid - l) >= THRESHOLD) |#'n VN.;  
mergeSort(data, temp, l, mid); kT:I.,N   
else nu(7Y YCM$  
insertSort(data, l, mid - l + 1); o=Y'ns^a(  
if ((r - mid) > THRESHOLD) JfmYr47Pv  
mergeSort(data, temp, mid + 1, r); W2'!Pc,W  
else Fm*npK  
insertSort(data, mid + 1, r - mid); QNH3\<IS  
z"Mk(d@-E  
for (i = l; i <= mid; i++) { [v\m)5  
temp = data; <~uzKs0  
} Q!_d6-*u  
for (j = 1; j <= r - mid; j++) { (>NZYPw^3  
temp[r - j + 1] = data[j + mid]; 4]6-)RHFB  
} +}PN+:yV  
int a = temp[l]; Je}0KW3G9L  
int b = temp[r]; +wxsAGy_j  
for (i = l, j = r, k = l; k <= r; k++) { c94=>p6  
if (a < b) { p}<60O"r$  
data[k] = temp[i++]; o4wSt6gBcJ  
a = temp; jcb&h@T8kv  
} else { |gIE$rt-~W  
data[k] = temp[j--]; O8 SE)R~  
b = temp[j]; _ j`tR:  
} SZ}=~yoD(  
} k81%$E  
} 5DVYHN9c|  
b` va\ '&3  
/** ~]q>}/&YLo  
* @param data e['<.Yf+  
* @param l "c|Rpzs[  
* @param i 5~j#Z (}u  
*/ A\#z<h[>  
private void insertSort(int[] data, int start, int len) { gY8$Rk %  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~clX2U8u`  
} s^K2,D]P  
} AI`k }sA~  
} &{UqGD#1&  
} r$8'1s37`  
P=_fYA3  
堆排序: /KNDo^P  
;S '?l0  
package org.rut.util.algorithm.support; ,Aai-AGG@  
dvU{U@:sz  
import org.rut.util.algorithm.SortUtil; {_/o' 6  
/;Hr{f jl{  
/** _TGs .t  
* @author treeroot k5Fj "U  
* @since 2006-2-2 igW* {)h3  
* @version 1.0 -%@ah:iJ  
*/ 5doi4b>]!  
public class HeapSort implements SortUtil.Sort{ {ywwJ  
wjD<"p;P  
/* (non-Javadoc) +`_0tM1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oQObr  
*/ O9ps?{g  
public void sort(int[] data) { 40pz<-B  
MaxHeap h=new MaxHeap(); J=k=cFUX  
h.init(data); "RN] @p#m  
for(int i=0;i h.remove(); 8-Y*b89  
System.arraycopy(h.queue,1,data,0,data.length); L!lmy&1  
} N2"B\  
 ]%FAJ\  
private static class MaxHeap{ ;RRw-|/Wm  
zQG{j\  
void init(int[] data){ zX4RqI  
this.queue=new int[data.length+1]; N+@ Ff3M  
for(int i=0;i queue[++size]=data; 6-fv<Pn  
fixUp(size); w.a9}GC  
} ?5J#  
} KE@+I.x  
5a$EXV  
private int size=0; V`1{*PrI@L  
7XK0vKmW3  
private int[] queue; !Yv_V]u=  
UaF~[toX  
public int get() { {MSE}|A\V  
return queue[1]; ]i$0s  
} !@F {FR  
f|FS%]fCxk  
public void remove() { t4[q :[1  
SortUtil.swap(queue,1,size--); ]JYE#F  
fixDown(1); ,>h"~X  
}  o+'|j#P  
file://fixdown 5P%#5Yr2  
private void fixDown(int k) { +tT"  
int j; rR-[CT  
while ((j = k << 1) <= size) { Q(nTL WW  
if (j < size %26amp;%26amp; queue[j] j++; q.`< q  
if (queue[k]>queue[j]) file://不用交换 G rp{ .  
break; >kK@tJn  
SortUtil.swap(queue,j,k); ZBK0`7#&EH  
k = j; H3<tsK=:  
} 8O9^g4?  
} +w^,!gA&  
private void fixUp(int k) { lAP k/G  
while (k > 1) { U?le|tK  
int j = k >> 1; -smN}*3[  
if (queue[j]>queue[k]) 0Eb4wupo  
break; mn?F;= qE  
SortUtil.swap(queue,j,k); 3ai[ r  
k = j; `\62 iUN  
} L)J1yw  
} f7~dn#<@  
'E3T fM  
} 1vj@ qw3  
rs{)4.I  
} Sk cK>i.[  
;v@G  
SortUtil: tr[}F7n9  
!q\=e@j-i  
package org.rut.util.algorithm; .EL3}6"A  
.i RKuBM/  
import org.rut.util.algorithm.support.BubbleSort; +ig%_QED[\  
import org.rut.util.algorithm.support.HeapSort; Lc{arhN  
import org.rut.util.algorithm.support.ImprovedMergeSort; @"MYq#2c$  
import org.rut.util.algorithm.support.ImprovedQuickSort; M/=36{,w-  
import org.rut.util.algorithm.support.InsertSort; ,r w4Lo  
import org.rut.util.algorithm.support.MergeSort; k8+J7(_c  
import org.rut.util.algorithm.support.QuickSort; hhy+bA}  
import org.rut.util.algorithm.support.SelectionSort; id1cZig  
import org.rut.util.algorithm.support.ShellSort; |VWT4*K  
m6ge %  
/** w5HIR/kP  
* @author treeroot m7'<k1#"Y  
* @since 2006-2-2 n9+33^ PT  
* @version 1.0 ?l/6DT>e  
*/ Q:(mK* _  
public class SortUtil { W/!P1M n  
public final static int INSERT = 1; dj Ojd,  
public final static int BUBBLE = 2; 3 y}E*QE  
public final static int SELECTION = 3; d^aVP  
public final static int SHELL = 4; P[ :_"4U  
public final static int QUICK = 5; .P)lQk\  
public final static int IMPROVED_QUICK = 6; ~DInd-<5  
public final static int MERGE = 7; o:AfEoH"~  
public final static int IMPROVED_MERGE = 8; %;k Hnl  
public final static int HEAP = 9; eUA]OF @  
>o?v[:u*  
public static void sort(int[] data) { 4f[%Bb  
sort(data, IMPROVED_QUICK); 1l$Ei,9  
} >9&31wA_  
private static String[] name={ u[b |QR=5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (4+P7Z,Nc  
}; E{|B&6$[}  
H`CID*Ji  
private static Sort[] impl=new Sort[]{ V%oZT>T3  
new InsertSort(), 0hemXvv1  
new BubbleSort(), 5[ zN M  
new SelectionSort(), M,]|L ch  
new ShellSort(), k."p&  
new QuickSort(), \~ D(ww  
new ImprovedQuickSort(), d&j  
new MergeSort(), ukSv70Ev  
new ImprovedMergeSort(), Jp=fLo 9  
new HeapSort() xQu|D>kv87  
}; p@Y=6Bw  
'E_~ |C  
public static String toString(int algorithm){ ':vZ&  
return name[algorithm-1]; QhZg{v[d  
} vV}w>Ap[  
k8w\d+!v  
public static void sort(int[] data, int algorithm) { 8z#Qp(he  
impl[algorithm-1].sort(data); ODxZO3  
} WTfjn |a  
m\`>N_4*9  
public static interface Sort { e2O6q05 ?Q  
public void sort(int[] data); WA`A/`taT  
} :-1|dE)U  
R/hI XO  
public static void swap(int[] data, int i, int j) { ~lw9sm*2v2  
int temp = data; *S.U8;*Xj  
data = data[j]; JXB)'d0  
data[j] = temp; w>%@Ug["  
} wh8';LZ>R  
} S[Du >  
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