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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。 jXyK[q&O&  
插入排序: Lyjp  
:rN5HOg^9  
package org.rut.util.algorithm.support; Ec!R3+  
*,XT;h$'>  
import org.rut.util.algorithm.SortUtil; HwBJUr91]  
/** XpP}(A@G  
* @author treeroot ^F+7@*u  
* @since 2006-2-2 chU,));F  
* @version 1.0 3hR3)(+1  
*/ 04!akPP<  
public class InsertSort implements SortUtil.Sort{ -$f$z(h  
G>+iisb%  
/* (non-Javadoc)  11-?M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !4+@b s  
*/ {MmK:C  
public void sort(int[] data) { cq 1)b\|  
int temp; dYp} R>+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  BbNl:`  
} 1lHBg  
} }vX/55  
} n'<F'1SWv  
b5UIX Kim  
} g;</|Z  
pIvr*UzY  
冒泡排序: {9h`h08?z  
RV6|sN[x>  
package org.rut.util.algorithm.support; @?[}\9dW  
|\h<!xR  
import org.rut.util.algorithm.SortUtil; }H9V$~}@-  
$7&t`E)qY  
/** FmtV[C #  
* @author treeroot 5[rA>g~  
* @since 2006-2-2 qa/VSk!{  
* @version 1.0 *>7Zc  
*/ sKL"JA T  
public class BubbleSort implements SortUtil.Sort{ @D=i|f  
Ug^vVc)  
/* (non-Javadoc) bqm%@*fZo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qr*7bE(a  
*/ [hKt4]R  
public void sort(int[] data) { Znh) m  
int temp; W0 N*c*k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2[Bw+<YA`  
if(data[j] SortUtil.swap(data,j,j-1); |&0Cuwt  
} T2MXwd&l  
} w O*x0$  
} w?A6S-z  
} tD3v`Ke  
[O^mG 9  
} Q~$hx{foN  
N/eFwv.Er  
选择排序: z%[^-l-  
Q`(h  
package org.rut.util.algorithm.support; jR mo9Bb2  
\Qe`>nA  
import org.rut.util.algorithm.SortUtil; S1d{! ` 3  
, Y cF~  
/** IM&l%6[).  
* @author treeroot 5?C) v}w+  
* @since 2006-2-2 LE4P$%>H  
* @version 1.0 Q`[J3-Q*{  
*/ Iq: G9M  
public class SelectionSort implements SortUtil.Sort { iig@$ i#  
($^=f}+  
/* $}Ky6sBnvO  
* (non-Javadoc) vS+E`[  
* _If:~mIs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _D~FwF&A  
*/ > R2o7~  
public void sort(int[] data) { gjex;h  
int temp; 1A;f[Rze  
for (int i = 0; i < data.length; i++) { S"Mm_<A$@  
int lowIndex = i; y@u,Mv  
for (int j = data.length - 1; j > i; j--) { y>_*}>2,O  
if (data[j] < data[lowIndex]) { $Rv (v%  
lowIndex = j; .V\: )\<|  
} Tq!.M1{&  
} s_Gf7uC  
SortUtil.swap(data,i,lowIndex); jL9to6 Hmr  
} hYU4%"X  
} Y|N.R(sAs&  
8YwSaBwO  
} s N|7   
($*R>*6<x  
Shell排序: VW *d*!  
n~G-X  
package org.rut.util.algorithm.support; A&($X)t  
Qwu~ {tf+'  
import org.rut.util.algorithm.SortUtil; guWX$C-+1  
7q|51rZz  
/** 8d*W7>rq  
* @author treeroot jp P'{mc  
* @since 2006-2-2 Wd/m]]W8Q  
* @version 1.0 tAH0o\1;  
*/ W>(p4m  
public class ShellSort implements SortUtil.Sort{ 3eJ"7sftW  
kESnlmy@J  
/* (non-Javadoc) cr<ty"3\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /;a b"b  
*/ /U =eB?>  
public void sort(int[] data) { +JRPd.B"@  
for(int i=data.length/2;i>2;i/=2){ 8:)itYE  
for(int j=0;j insertSort(data,j,i); eJ tfQ@?  
} !w=6>B^  
} g|PRk9  
insertSort(data,0,1);  /DN!"  
} 0dKi25J  
*Z C$DW!-  
/** Hlye:.$  
* @param data J}37 9  
* @param j bO\E)%zp  
* @param i a>XlkkX  
*/ T9=55tpG9  
private void insertSort(int[] data, int start, int inc) { m*Q*{M_e  
int temp; bf1EMai"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "fX9bh^  
} P gK> Z,  
} (n3MbVi3LU  
} RYem(%jq  
No G`J$D  
} <m!(eLm+B  
47 *,  
快速排序: r&?i>.Kz8  
z9 )I@P"  
package org.rut.util.algorithm.support; mDJN)CX  
Xj("  
import org.rut.util.algorithm.SortUtil; [[ ;vZ  
!$5.\D  
/** FF7  
* @author treeroot Ua= w;h  
* @since 2006-2-2 _k2*2db   
* @version 1.0 nFY6K%[  
*/ VQ((c:+!  
public class QuickSort implements SortUtil.Sort{ oD>j2 6Q  
:Mq-4U.e  
/* (non-Javadoc) q=(.N>%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5<?s86GHh'  
*/ |'" 17c&  
public void sort(int[] data) { @ATJ|5.gr  
quickSort(data,0,data.length-1); )`B n"=  
} [>N`)]fP  
private void quickSort(int[] data,int i,int j){ gV-x1s+  
int pivotIndex=(i+j)/2; x]%'^7#v)  
file://swap KaGG4?=V  
SortUtil.swap(data,pivotIndex,j); \6z_ ;  
fF*{\  
int k=partition(data,i-1,j,data[j]); 6I`Lszs  
SortUtil.swap(data,k,j); EA+}Rf6}  
if((k-i)>1) quickSort(data,i,k-1); {D9m>B3"{  
if((j-k)>1) quickSort(data,k+1,j); ~KF>Jow?Y  
BQTibd  
} w;Jby  
/** ;)nV  
* @param data fXJbC+  
* @param i [TFd|ywn  
* @param j H6I]GcZ$  
* @return ++)3*+N+  
*/ S_ Pa .  
private int partition(int[] data, int l, int r,int pivot) { l[D5JnWxt  
do{ )lsR8Hi8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :xz,PeXo7  
SortUtil.swap(data,l,r); gZLzE*NZ  
} 5o&noRIIr  
while(l SortUtil.swap(data,l,r); |JD"iP:  
return l; 4$^\s5K  
} ]gHi5]\NC  
jjLwHJ  
} h &R1"  
s v}o%  
改进后的快速排序: eAPNF?0yh  
CCQ38P@rv  
package org.rut.util.algorithm.support; CMI V"-  
Sb;=YW 1<  
import org.rut.util.algorithm.SortUtil; 8r46Wr7Q  
|)pRkn8x  
/** GV"HkE;  
* @author treeroot VX<jg#(  
* @since 2006-2-2 #uzp  
* @version 1.0 <*4BT}r,^2  
*/ BD (Y =g  
public class ImprovedQuickSort implements SortUtil.Sort { >.)m|,  
l9eCsVQ~V  
private static int MAX_STACK_SIZE=4096; dvl'Sq<  
private static int THRESHOLD=10; fd<a%nSD  
/* (non-Javadoc) X>W2aDuEZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/a|-V}m&  
*/ -~'{WSJ  
public void sort(int[] data) { n8dJ6"L<"  
int[] stack=new int[MAX_STACK_SIZE]; I \DH  
`,O#r0m  
int top=-1; &=-ZNWNo  
int pivot; qlJzXq{|`  
int pivotIndex,l,r; &eqeQD6  
*49lM;  
stack[++top]=0; [$<\*d/  
stack[++top]=data.length-1; hN3*]s;/6z  
X' ,0vK  
while(top>0){ e2 X\ll  
int j=stack[top--]; c :{#H9  
int i=stack[top--]; _3'FX# xc  
=>kE`"{!  
pivotIndex=(i+j)/2; V4.&"0\n#  
pivot=data[pivotIndex]; >-0\wP  
K#e&yY  
SortUtil.swap(data,pivotIndex,j); k+D"LA%J  
_,?<r&>v6  
file://partition KT>eE  
l=i-1; *@zh  
r=j; +[R,wsG  
do{ "^UJC-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FZ0wtS2  
SortUtil.swap(data,l,r); +p Y*BP+~i  
} +=:*[JEK,U  
while(l SortUtil.swap(data,l,r); pp2,d`01[L  
SortUtil.swap(data,l,j); R iPxz=kr  
Sl!#!FGI  
if((l-i)>THRESHOLD){ /YLHg5n8+  
stack[++top]=i; 2.>WR~ \  
stack[++top]=l-1; Sz_{#-  
} y_7lSo8<  
if((j-l)>THRESHOLD){ QQPT=_P]  
stack[++top]=l+1; Mkj`  
stack[++top]=j; 9[5qN!P;y  
} jgW-&nK!  
iaAj|:  
} IOjp'6Yr  
file://new InsertSort().sort(data); 5x=aJl;G  
insertSort(data); y$Rr,]L  
} VPh0{(O^=  
/** ;Eer  
* @param data j^V r!y  
*/ @X?7a]+;8  
private void insertSort(int[] data) { x/B1\U I  
int temp; UK7pQt}9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p" ;5J+?(  
} 'BiR ,M$mY  
} 4*D'zJsJ  
} r+D ?_Lk  
<Pm!#)-g9  
} b:M1P&R  
b5@sG^  
归并排序: 2 lc  
.S{FEV  
package org.rut.util.algorithm.support; j v4O  
QH d^?H*  
import org.rut.util.algorithm.SortUtil; GI[TD?s  
O?=YY@j  
/** D"z3SLFW{  
* @author treeroot O)jpnNz  
* @since 2006-2-2 R[ #vFQ  
* @version 1.0 X9-WU\?UC  
*/ nqFJNK]a  
public class MergeSort implements SortUtil.Sort{ ){I0  
cS2PrsUx  
/* (non-Javadoc) 4m:D8&D_M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^7Hwpn7E  
*/ kF@Z4MB}yr  
public void sort(int[] data) { VL?sfG0  
int[] temp=new int[data.length]; 'xP&u<(F  
mergeSort(data,temp,0,data.length-1); $1E'0M`  
} <3)k M&.B  
sP'U9l  
private void mergeSort(int[] data,int[] temp,int l,int r){ Sk6B>O<:  
int mid=(l+r)/2; fFNs cY<4w  
if(l==r) return ; X3dXRDB'  
mergeSort(data,temp,l,mid); 9zL(PkC%\  
mergeSort(data,temp,mid+1,r); V'q?+p] a  
for(int i=l;i<=r;i++){ _u{z$;  
temp=data; 3T= ?!|e  
} #aua6V!"  
int i1=l; z8@[]6cW  
int i2=mid+1; K7-z.WTUR  
for(int cur=l;cur<=r;cur++){ 8)o%0#;0B  
if(i1==mid+1) J85S'cwZZ  
data[cur]=temp[i2++]; 0Xw$l3@N^  
else if(i2>r) cSD$I^$oq  
data[cur]=temp[i1++]; tgVMgu  
else if(temp[i1] data[cur]=temp[i1++]; LsI8T uv  
else MtD0e@  
data[cur]=temp[i2++]; Mp7X+o/  
} (k^o[HF  
} ,6 IKkyD  
+Zg@X.z  
} cFZcBiw  
*8I"7'xh  
改进后的归并排序: )vsX (/WU  
<0!O'" "J  
package org.rut.util.algorithm.support; YctWSfh  
SYd6D@^2j  
import org.rut.util.algorithm.SortUtil; U!\~LKfA  
xep8CimP'  
/** W;T 5[  
* @author treeroot UasU/Q <   
* @since 2006-2-2 W>j@E|m$  
* @version 1.0 ]<*-pRN  
*/ ,x=S)t  
public class ImprovedMergeSort implements SortUtil.Sort { @g5qcjD'[  
4Jf9N'  
private static final int THRESHOLD = 10; |kGQ~:k+P  
+WjX@rSq[  
/* ~+)>D7  
* (non-Javadoc) % aqP{mOO  
* &"?S0S>r!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^)UX#D3b  
*/ 6Vj=SYK  
public void sort(int[] data) { @GWJq 3e  
int[] temp=new int[data.length]; g.*DlD%%  
mergeSort(data,temp,0,data.length-1); M5kw3Jy5  
} CUN1.i<pk8  
#M)+sK$H%f  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4:9N]1JCb  
int i, j, k; mIZ6[ ?  
int mid = (l + r) / 2; )~0TGy|  
if (l == r) mKBO<l{S  
return; b+CJRB1  
if ((mid - l) >= THRESHOLD) lc$wjK[w[  
mergeSort(data, temp, l, mid); "WzKJwFr  
else ubv>* iO  
insertSort(data, l, mid - l + 1); Y$5uoq%p3A  
if ((r - mid) > THRESHOLD) w,az{\  
mergeSort(data, temp, mid + 1, r); aD+4uGN  
else wJZuJ(  
insertSort(data, mid + 1, r - mid); O.DO,]Uh  
3yrb7Rn3  
for (i = l; i <= mid; i++) { iax0V  
temp = data; bd\%K`JQ{  
} s1]m^,  
for (j = 1; j <= r - mid; j++) { G}Ko*:fWS  
temp[r - j + 1] = data[j + mid]; ?C`r3  
} K3iQ/j~aq  
int a = temp[l]; bC /Ql  
int b = temp[r]; 8'"=y}]H~  
for (i = l, j = r, k = l; k <= r; k++) { tZG l^mA"g  
if (a < b) { N%F4ug@i   
data[k] = temp[i++]; P1R5}i  
a = temp; 2){O&8A  
} else { PJ YUD5  
data[k] = temp[j--]; wF9L<<&B  
b = temp[j]; jU-aa+  
} M1icj~Jr  
} PIAE6,*  
} k1.%ZZMM  
c'>_JlG~  
/** x"n++j  
* @param data & 'CUc/,  
* @param l O7CW#F  
* @param i *M)M!jTv  
*/ }K5okxio  
private void insertSort(int[] data, int start, int len) { I^nDO\m <  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f92z/5%V  
} TlowEh8r  
} = N;5T  
} R nwFxFIQ  
} &f}w&k2yj  
F{4v[WP)  
堆排序: U\u07^h[  
ez5J+  
package org.rut.util.algorithm.support; B Dp")[l  
-p?&vQDo`  
import org.rut.util.algorithm.SortUtil; CBv0fQtL  
(g*j+i  
/** B 6z 'Q  
* @author treeroot v;`>pCal  
* @since 2006-2-2 pztfm'  
* @version 1.0 mITNx^p4f  
*/ ;: &|DN3;  
public class HeapSort implements SortUtil.Sort{ QWnGolN  
2]<.m]  
/* (non-Javadoc) yVp,)T9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yM`u]p1  
*/ rvlvk"  
public void sort(int[] data) { 9;'#,b*(  
MaxHeap h=new MaxHeap(); ;?k<L\zaw  
h.init(data); 8ok=&Gq4  
for(int i=0;i h.remove(); Vef!5]t5  
System.arraycopy(h.queue,1,data,0,data.length); 2kt0Rxg  
} aL_/2/@X8  
sPG500=)  
private static class MaxHeap{ qvLh7]sbK:  
yVgC1-8i*  
void init(int[] data){ KIi:5Y  
this.queue=new int[data.length+1]; "g)V&Lx#X  
for(int i=0;i queue[++size]=data; t>AOF\  
fixUp(size); =7JSJ98  
} m^0vux  
} F(#?-MCs  
d!UxFY@  
private int size=0; `IEA  
7FJ4;HLQ  
private int[] queue; c -PZG|<C[  
TZ+ p6M8G  
public int get() { araXE~Ac  
return queue[1]; 7f}uRXBV$A  
} <zL_6Y2  
3LT~- SvL  
public void remove() { w|6/i/X  
SortUtil.swap(queue,1,size--); q" f65d4c  
fixDown(1); lcm3wJ'w  
} E*u*LMm  
file://fixdown !6 L!%Oi  
private void fixDown(int k) { 1f<R,>  
int j; #G.eiqh$a  
while ((j = k << 1) <= size) { aopZ-^  
if (j < size %26amp;%26amp; queue[j] j++; #-\5O  
if (queue[k]>queue[j]) file://不用交换 MqB@}!  
break; +C8O"  
SortUtil.swap(queue,j,k); ZMb+sUK  
k = j; Y+ UJV6  
} Ps>:|j+  
} 9OV@z6  
private void fixUp(int k) { YR*gO TD  
while (k > 1) { (jA5`4>u  
int j = k >> 1; L2,2Sn*4i  
if (queue[j]>queue[k]) Z3weFbCH  
break; gu!!}pwV9  
SortUtil.swap(queue,j,k); c )LG+K  
k = j; pa1<=w  
} 5E-;4o;RI(  
} M2|!,2  
H7GI`3o  
} ZX` \so,&,  
=`QYy-b X  
} fj;ZGbg-O  
**L&I5Hhm  
SortUtil: p X{wEc6}  
jwT` Z  
package org.rut.util.algorithm; gDVsi  
.@E5dw5  
import org.rut.util.algorithm.support.BubbleSort; DPjs? M<  
import org.rut.util.algorithm.support.HeapSort; fJ[ ^_,O  
import org.rut.util.algorithm.support.ImprovedMergeSort; m~5 unB9  
import org.rut.util.algorithm.support.ImprovedQuickSort; Cd_@<  
import org.rut.util.algorithm.support.InsertSort; Ai1"UYk\\Y  
import org.rut.util.algorithm.support.MergeSort; J<;io!  
import org.rut.util.algorithm.support.QuickSort; &J&'J~N  
import org.rut.util.algorithm.support.SelectionSort; o6px1C:  
import org.rut.util.algorithm.support.ShellSort; @T~XwJ~  
dazNwn  
/** LN WS  
* @author treeroot "t&=~eOe3  
* @since 2006-2-2 -0d9,,c  
* @version 1.0 eO <N/?t  
*/ 'EiCT l  
public class SortUtil { L@{'J  
public final static int INSERT = 1; s|e.mZk/  
public final static int BUBBLE = 2; ud  r\\5  
public final static int SELECTION = 3; Yi%lWbr  
public final static int SHELL = 4; RJ'[m~yl5X  
public final static int QUICK = 5; } +}nrJv  
public final static int IMPROVED_QUICK = 6; hm1s~@oEm  
public final static int MERGE = 7; 1H-Y3G>jN  
public final static int IMPROVED_MERGE = 8; U L $!  
public final static int HEAP = 9; Q3 8+`EhLA  
VKDOM0{V  
public static void sort(int[] data) { P}}G9^  
sort(data, IMPROVED_QUICK); 9?H$0xZV  
} SYY x>1;8`  
private static String[] name={ #QoWneZ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Eo6N'h>h  
}; =G:Krc8w@  
`/PBZnj  
private static Sort[] impl=new Sort[]{ ;[}OZt  
new InsertSort(), miaH,hm  
new BubbleSort(), \Nt 5TG_  
new SelectionSort(), K9#kdo1 2  
new ShellSort(), Nn[*ox#i  
new QuickSort(), |O_ JUl  
new ImprovedQuickSort(), ]ub"OsXC  
new MergeSort(), R^.PKT2E  
new ImprovedMergeSort(), &))d],tJX  
new HeapSort() PaI\y! f  
}; TRGpE9i  
H54RA6$>  
public static String toString(int algorithm){ x#EE_i/W  
return name[algorithm-1]; .D 4G;=Q  
} _d@YLd78P  
; BN81;  
public static void sort(int[] data, int algorithm) { |Gf<Ql_.4  
impl[algorithm-1].sort(data); d/7R}n^  
} <R7{W"QTA)  
o}v<~v(  
public static interface Sort { ~#sD2b` 0  
public void sort(int[] data); -wXeue},>  
} Mp`$1Ksn  
{$z54nvw$  
public static void swap(int[] data, int i, int j) { 1%+-}yo<  
int temp = data; A3a//e  
data = data[j]; qLmzA@Cv  
data[j] = temp; m !*F5x  
} BYq80Vk%@  
} mKZzSd)p  
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