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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。 5N907XVu  
插入排序: ~Q)Dcit-  
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package org.rut.util.algorithm.support; .VkLF6  
7??j}ob>  
import org.rut.util.algorithm.SortUtil; 787}s`,}  
/** qX]ej 2  
* @author treeroot GFZx[*+%%z  
* @since 2006-2-2 %p};Di[V  
* @version 1.0 OKCX>'j:S  
*/ h=_h,?_  
public class InsertSort implements SortUtil.Sort{ o2^?D`Jr  
9QkIMJf0e  
/* (non-Javadoc) 30h1)nQ$h}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ScC!?rTW~7  
*/ 'x= y:0A  
public void sort(int[] data) { HgRfMiC  
int temp; )Ju$PrO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cKAZWON8;v  
} cx4'rK.  
} (d-j/v*4  
} W97 &[([  
~wd~57i@  
} LiD-su D  
|)Sx"B)  
冒泡排序: y{\(|j  
~{s7(^ P  
package org.rut.util.algorithm.support; z(beT e  
H@8 ;6D  
import org.rut.util.algorithm.SortUtil; DYCXzFAa  
XcQ'(  
/** 0N3S@l#,\A  
* @author treeroot hH@pA:`s  
* @since 2006-2-2 ^ P=CoLFa  
* @version 1.0 Hy1f,D  
*/ "a >a "Ei  
public class BubbleSort implements SortUtil.Sort{ V~qlg1h  
V %Rz(a+c  
/* (non-Javadoc) {~:F1J~=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N @sVA%L.  
*/ XWFuAE  
public void sort(int[] data) { 4S#q06=Xe  
int temp; lr@H4EJ{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5VPP 2;J  
if(data[j] SortUtil.swap(data,j,j-1); }!g^}BWWp  
} *G0r4Ui$  
} SwPc<Z?P  
} 3:WXrOl  
} })}-K7v1+  
18U CZ;)>  
} R?[KK<sWWe  
5%6r,?/7KM  
选择排序: dq ~=P>  
ssC5YtF7X  
package org.rut.util.algorithm.support; H@xIAL  
v><uHjP  
import org.rut.util.algorithm.SortUtil; y:8*!}fR  
qjp<_aw  
/** #0j,1NpL  
* @author treeroot \ >(;t#>  
* @since 2006-2-2 ;1 02ddRV  
* @version 1.0 _*Z2</5  
*/ .v:K`y;f\(  
public class SelectionSort implements SortUtil.Sort { K r&HT,>B  
i;$'haK<  
/* eqze7EY  
* (non-Javadoc) 7)Rx-  
* B[0XzV]Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~IKPi==@,  
*/ G&Sp }  
public void sort(int[] data) { v+|N7  
int temp; ]='E&=nc  
for (int i = 0; i < data.length; i++) { ctL@&~*nY  
int lowIndex = i; {^#62Y  
for (int j = data.length - 1; j > i; j--) { <99Xg_e  
if (data[j] < data[lowIndex]) { \i=,[8t[r  
lowIndex = j; ivbuS-f =r  
} bG0t7~!{E  
} A8R}W=  
SortUtil.swap(data,i,lowIndex); [EJ[Gg0m  
} Hs+VA$$*  
} *_z5Pa`A  
B&`hvR  
} \@4_l?M  
<"@~  
Shell排序: \gL H_$}  
,"u-V<>6O  
package org.rut.util.algorithm.support; j#b?P=|l  
q@p-)+D;  
import org.rut.util.algorithm.SortUtil; 1TKOvy_  
h&Ehp   
/** \z<B=RT\  
* @author treeroot O=#FpPHrdw  
* @since 2006-2-2 u><gmp&  
* @version 1.0 x(z[S$6Y\  
*/ _gB`;zo  
public class ShellSort implements SortUtil.Sort{ 9(Vq@.;Z`j  
V$+xJ  m  
/* (non-Javadoc) OCF\*Sx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n}qHt0N  
*/ -tSWYp{  
public void sort(int[] data) { Nf>1`eP  
for(int i=data.length/2;i>2;i/=2){ SQ)$>3>C  
for(int j=0;j insertSort(data,j,i); s&p*.I]@>  
} a2*WZc`  
} %,GY&hTw  
insertSort(data,0,1); ky#d`   
} c@:r\]  
)kl| 5i  
/** &eT)c<yhyK  
* @param data [K[tL|EK  
* @param j 5,'?NEyw  
* @param i =8j;!7 p  
*/ =V1k'XJ  
private void insertSort(int[] data, int start, int inc) { 'z2}qJJ)  
int temp; #H(|+WEu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7Rj!vj/  
} y>u+.z a|  
} [zK|OMxoV  
} VY@uQ#&A  
dZRz'd  
} t(CdoE,6  
Y*O7lZuF%  
快速排序: Tn/T :7C  
}#q9>gx  
package org.rut.util.algorithm.support; J}TS-j0  
:N%cIxrqP  
import org.rut.util.algorithm.SortUtil; ;'dw`)~jQ  
oDx*}[/  
/** 9'Y~! vY  
* @author treeroot N- ?U2V  
* @since 2006-2-2 `ItMn&P  
* @version 1.0 JTpKF_Za<  
*/ e6k}-<W*q  
public class QuickSort implements SortUtil.Sort{ 0[xum  
,Vt7Kiu  
/* (non-Javadoc) [Ym?"YwVX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q}W6?XDu  
*/ lKI1bs]i  
public void sort(int[] data) { |h*H;@$  
quickSort(data,0,data.length-1); T%KZV/  
} 6t TLyI$+  
private void quickSort(int[] data,int i,int j){ "4H&wHhT!  
int pivotIndex=(i+j)/2; 9<WMM)  
file://swap &m`1lxT  
SortUtil.swap(data,pivotIndex,j); "}Ch2K  
z*l3O~mZ  
int k=partition(data,i-1,j,data[j]); RERum  
SortUtil.swap(data,k,j); 85m[^WGyh  
if((k-i)>1) quickSort(data,i,k-1); wtetB')yD  
if((j-k)>1) quickSort(data,k+1,j); HW"|Hm$Y(  
7NMQUN7k '  
} OTL=(k  
/** lOPCM1Se  
* @param data z;GnQfYG  
* @param i S$+vRX7  
* @param j nE+sbfC   
* @return A0cC)bd&  
*/ (X,Ua+{  
private int partition(int[] data, int l, int r,int pivot) { #c'yAa  
do{ Y;p _ff  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2+TCFpv  
SortUtil.swap(data,l,r); ,<zGvksk  
} IBcCbNs!  
while(l SortUtil.swap(data,l,r); ?&_ -,\t  
return l; `ndesP  
} 7qA0bUee5  
PSI5$Vna4p  
} wW1aG  
5CueD]  
改进后的快速排序: _:Tjq)  
s-}|_g.Pt  
package org.rut.util.algorithm.support; `g<@F^x5  
#Bg88!-4  
import org.rut.util.algorithm.SortUtil; Z%y>q|:  
ePq(:ih  
/** ,@tkL!"9q  
* @author treeroot ';hU&D;s  
* @since 2006-2-2 f'0n^mSP  
* @version 1.0 8s/gjEwA  
*/ cNtGjLpx;  
public class ImprovedQuickSort implements SortUtil.Sort { @v ss:'l  
^&zwO7cS  
private static int MAX_STACK_SIZE=4096; C~ t?<  
private static int THRESHOLD=10; TUIj-HSe  
/* (non-Javadoc) h=.|!u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X]U,`oE)9  
*/ gD3s,<>o  
public void sort(int[] data) { 53J!iNnXT6  
int[] stack=new int[MAX_STACK_SIZE]; K~H)XJFF  
!jN}n)FSq  
int top=-1; k<Z^93 S  
int pivot; u pg?  
int pivotIndex,l,r; AqB5B5}  
nT..+ J)  
stack[++top]=0; "^F#oo%L  
stack[++top]=data.length-1; +D[|L1{xb  
6v (}<2~  
while(top>0){ .+MJ' bW  
int j=stack[top--]; E0!}~Z)  
int i=stack[top--]; "~(qp_AI  
XE* @*  
pivotIndex=(i+j)/2; au@ LQxKQ  
pivot=data[pivotIndex]; 'MRvH lCM  
oG M Ls  
SortUtil.swap(data,pivotIndex,j); -G e5gQ=  
U`N|pPe:w  
file://partition T6h-E^Z  
l=i-1; 26PUO$&b.  
r=j; :K>v F`SM  
do{ 9]fhH  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +%Q:  
SortUtil.swap(data,l,r); R''nZ/R  
} h[ #Lg3  
while(l SortUtil.swap(data,l,r); ?%% 'GX  
SortUtil.swap(data,l,j); gF-<%<RV  
"[2CV!_  
if((l-i)>THRESHOLD){ .) uUpY%K^  
stack[++top]=i; 6w(Mb~[n  
stack[++top]=l-1; |x@)%QeC  
} v,y nz'>)  
if((j-l)>THRESHOLD){ IROX]f}r(  
stack[++top]=l+1; ]E'BFon  
stack[++top]=j; d0Xb?- }3M  
} vQ/}E@?u  
^]l^q'?>:  
} b&[9m\AX`  
file://new InsertSort().sort(data); QA>(}u\+  
insertSort(data); kP~'C'5Ys  
} (;v)0&h  
/** )]WWx-Uf'  
* @param data _a1 =?  
*/ _J(n~"eR  
private void insertSort(int[] data) { N`XJA-DE  
int temp; 0 zm)MSg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W9n0Jv  
} ;,P-2\V/  
} )OQhtxK  
} JwCv(1$GM  
]@X5'r"  
} ,<?iL~> %  
:K.%^ag=j  
归并排序: ^?PU:eS  
Rs_0xh  
package org.rut.util.algorithm.support; L[l ?}\  
I@Zd<Rn  
import org.rut.util.algorithm.SortUtil; fm$eJu  
n,sf$9"  
/**  :VwU2  
* @author treeroot r_C|gfIP  
* @since 2006-2-2 zRTR  
* @version 1.0 vSty.:bY\p  
*/ @P=St\;VP  
public class MergeSort implements SortUtil.Sort{ RtVy^~=G  
?#8',:  
/* (non-Javadoc) uC\FW6K=m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nk.Y#+1)  
*/ Y `4AML  
public void sort(int[] data) { Rs+rlJq  
int[] temp=new int[data.length]; :g)0-gN   
mergeSort(data,temp,0,data.length-1); <$\vL   
} QZy+`  
v|5:;,I  
private void mergeSort(int[] data,int[] temp,int l,int r){ dw %aoe  
int mid=(l+r)/2; Bz}Dgbb  
if(l==r) return ; ").MU[q%Y  
mergeSort(data,temp,l,mid); (vte8uQe  
mergeSort(data,temp,mid+1,r); csn/h$`-@  
for(int i=l;i<=r;i++){ ;>^oe:@  
temp=data; p- 5)J&  
} .C^1.)  
int i1=l; .G[y^w)w}  
int i2=mid+1; n8(B%KF  
for(int cur=l;cur<=r;cur++){ |8I #`  
if(i1==mid+1) (Wkli:Lq  
data[cur]=temp[i2++]; d,=Kv  
else if(i2>r) ?DcRD)X  
data[cur]=temp[i1++]; bc}X.IC  
else if(temp[i1] data[cur]=temp[i1++]; {MmHR  
else +|.}oL^}G  
data[cur]=temp[i2++]; "|W .o=R  
} 3L/qU^`  
} [?)=3Pp  
[% chN /  
} 4 -)'a} O  
HZMs],GX  
改进后的归并排序: u#5/s8  
SQ#6~zxl  
package org.rut.util.algorithm.support; $q*kD#;mh  
qh Ezv~  
import org.rut.util.algorithm.SortUtil; U$a Eby.  
iO=xx|d  
/** }HS:3Dt  
* @author treeroot yu"Ii-9z  
* @since 2006-2-2 r}) 2-3ZA9  
* @version 1.0  f])?Gw  
*/ kTQ:k }%B  
public class ImprovedMergeSort implements SortUtil.Sort { 0 eZfHW&  
"cjZ6^Hum  
private static final int THRESHOLD = 10;  ToNi<~  
zM6 yUEg  
/* Z:f0>  
* (non-Javadoc) ja$>>5<q  
* xO'I*)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !- f>*|@  
*/ 7SzY0})<U  
public void sort(int[] data) { .lu:S;JSnS  
int[] temp=new int[data.length]; Cus=UzL  
mergeSort(data,temp,0,data.length-1); *ggTTHy  
} / uI/8>p(  
{ frEVHw  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^ )N[x''a  
int i, j, k; 20m6-rkI<}  
int mid = (l + r) / 2; Fk D  
if (l == r) Qu]0BVIe  
return; "_+X#P x  
if ((mid - l) >= THRESHOLD) "M6a_rZ2W  
mergeSort(data, temp, l, mid); TI}H(XL(  
else x( w <U1  
insertSort(data, l, mid - l + 1); ub6\m=Y7  
if ((r - mid) > THRESHOLD) 1=#r$H  
mergeSort(data, temp, mid + 1, r); Z_' %'&Y  
else !mBsDn(J  
insertSort(data, mid + 1, r - mid); L1BpkB  
}7hpx!s,  
for (i = l; i <= mid; i++) { Ary$,3X2  
temp = data; Wy#`*h,  
} 9CJUOB>]  
for (j = 1; j <= r - mid; j++) { DjOFfD\MF  
temp[r - j + 1] = data[j + mid]; [2w3c4K  
} Js+d4``W  
int a = temp[l]; 0vG}c5;F  
int b = temp[r]; 4W9!_:j(j  
for (i = l, j = r, k = l; k <= r; k++) { yG&kP:k<  
if (a < b) { q^sMJ  
data[k] = temp[i++]; 7tAWPSwf  
a = temp; x+B~t4A  
} else { *B}vYX  
data[k] = temp[j--]; zq!2);,  
b = temp[j]; P},S[GaZ  
} e"r'z n  
} `m<="No  
} 'lC"wP&$  
R,Zuy( g  
/** L:Wy- Z  
* @param data 1@)]+* F*z  
* @param l dMGu9k~u  
* @param i *(?YgV  
*/ 5YS`v#+  
private void insertSort(int[] data, int start, int len) { `RGZ-Q{_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TG?;o/  
} ?; )(O2p  
} W<!q>8Xn?  
} R5]R pW=G  
} P05_\ t  
|Q9S$l]  
堆排序: `m2F.^qrr  
6/4OFvL1  
package org.rut.util.algorithm.support; &tMvs<q,  
pvmm" f  
import org.rut.util.algorithm.SortUtil; ac+7D:X  
h(/|`   
/** ^|\ *i  
* @author treeroot asQ" |]m  
* @since 2006-2-2 *qOo,e  
* @version 1.0 Fg#*rzA  
*/ Yf{s0Z  
public class HeapSort implements SortUtil.Sort{ &}T`[ d_Z  
u85y;AE,(  
/* (non-Javadoc) 8(3vNuyP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NmB0CbB  
*/ t9m`K9.\  
public void sort(int[] data) { ;/oMH/,U8  
MaxHeap h=new MaxHeap(); ybS7uo  
h.init(data); 5yA^n6  
for(int i=0;i h.remove(); L7D'wf  
System.arraycopy(h.queue,1,data,0,data.length); 9,y&?GLP  
} yvH:U5%  
0eQ5LG?)  
private static class MaxHeap{ )3)L  
%J|EDf ,M  
void init(int[] data){ #v&&GuF  
this.queue=new int[data.length+1]; (5yg\3Jvp  
for(int i=0;i queue[++size]=data; "r"Y9KODm  
fixUp(size); <EBp X   
} PI{sO |  
} ~7~nU>Vv  
m%Ef]({I  
private int size=0; 3Ji,n;QLm  
;OdUH   
private int[] queue; /au\OBUge  
vxqMo9T  
public int get() { ,%KB\;1mn'  
return queue[1]; CS"p[-0  
} {Or|] 0  
N}dJ)<(2~  
public void remove() { Kjf#uU.7  
SortUtil.swap(queue,1,size--); ]AHUo;(f%  
fixDown(1); Tl=vgs1  
} Hy `r}+  
file://fixdown e,4!/|H:  
private void fixDown(int k) { 55!9U:{  
int j; f ~Fus  
while ((j = k << 1) <= size) { Vm6^'1CY  
if (j < size %26amp;%26amp; queue[j] j++; ikxSWO_Y=  
if (queue[k]>queue[j]) file://不用交换 9s7B1Pf  
break; c3 wu&*p{  
SortUtil.swap(queue,j,k); J@Orrz2q#  
k = j; )E4COw+  
} w1KQ9H*  
} \\/X+4|o'  
private void fixUp(int k) { 2XXEg> CU  
while (k > 1) { ]7VK&YfN  
int j = k >> 1; ?&X6VNbU  
if (queue[j]>queue[k]) }F3Z~  
break; lhjPS!A~  
SortUtil.swap(queue,j,k); ]3I_H+hU  
k = j; tjTF?>^6|  
} ';lO[B  
} ?.Kl/8ml  
%2L9kw'  
} Tl1?5  
'rF TtT  
} 1/fvk  
G6J3F  
SortUtil: +Rh'VZJs  
2xnOWW   
package org.rut.util.algorithm; UG!&n@R  
P;y/`_jo  
import org.rut.util.algorithm.support.BubbleSort; ' 5Ieqpm9  
import org.rut.util.algorithm.support.HeapSort; pTN_6=Y"  
import org.rut.util.algorithm.support.ImprovedMergeSort; w%ip"GT,  
import org.rut.util.algorithm.support.ImprovedQuickSort; DBv5Og  
import org.rut.util.algorithm.support.InsertSort; z^b\hR   
import org.rut.util.algorithm.support.MergeSort; \UC4ai2MK  
import org.rut.util.algorithm.support.QuickSort; xz%ig^L  
import org.rut.util.algorithm.support.SelectionSort; 4Cfwz-Qo  
import org.rut.util.algorithm.support.ShellSort; *PI3L/*  
Hv=coS>g:  
/** 2MC\~"L<  
* @author treeroot lu{}j4  
* @since 2006-2-2 _ <~05Eh  
* @version 1.0 Y9%yjh  
*/ RS:0xN\JN  
public class SortUtil { 7]^Cg;EtM:  
public final static int INSERT = 1; vbFAS:Y:+  
public final static int BUBBLE = 2; BNByaC  
public final static int SELECTION = 3; ,S8Vfb &  
public final static int SHELL = 4; lfKknp#B/O  
public final static int QUICK = 5; L"Gi~:z  
public final static int IMPROVED_QUICK = 6; ~\/ J&  
public final static int MERGE = 7; >YW>=5_  
public final static int IMPROVED_MERGE = 8; 2Fh_  
public final static int HEAP = 9; sDF J  
@Yg7F>s  
public static void sort(int[] data) { G'epsD,.bX  
sort(data, IMPROVED_QUICK); *p-Fn$7\n  
} :Hd<S   
private static String[] name={ _E%[D(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nqH^%/7)A@  
}; P]TT  
tL5Xfd?u  
private static Sort[] impl=new Sort[]{ y >OZ<!`  
new InsertSort(), JC#@sJ4az)  
new BubbleSort(), |B n=$T]  
new SelectionSort(), *Z]| Z4Q/`  
new ShellSort(), _(jE](,  
new QuickSort(), GBQb({  
new ImprovedQuickSort(), lfA  BF  
new MergeSort(), !69^ kIi$  
new ImprovedMergeSort(), Y1~SGg7(@  
new HeapSort() T/K.'92S  
}; sV6A& Aw  
^"Y'zI L  
public static String toString(int algorithm){ AWi87q  
return name[algorithm-1]; Fv: %"P^  
} EH3G|3^xz  
t2:c@)  
public static void sort(int[] data, int algorithm) { PYUY bRn  
impl[algorithm-1].sort(data); sHuz10  
} D 6]$P%t9  
@r43F$bcqo  
public static interface Sort { 5 QeGx3'  
public void sort(int[] data); I Q L~I13  
} Rf^cw}jU  
b>z.d-  
public static void swap(int[] data, int i, int j) { z]YhQIU4n8  
int temp = data; OT[m g4&  
data = data[j]; L1xD$wl  
data[j] = temp; rrWk&;?  
} v(h Xk]S  
} +m.8*^  
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