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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。 Z>l<.T"t'  
插入排序: ddbQFAQQQ  
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package org.rut.util.algorithm.support; IkG;j+=  
jp1e3 Cg  
import org.rut.util.algorithm.SortUtil; !}5rd\  
/** yb)qg]2  
* @author treeroot i g .  
* @since 2006-2-2 P s<k2  
* @version 1.0 \cf'Hj}  
*/ 4eF{Y^   
public class InsertSort implements SortUtil.Sort{ OmK4 \_.  
e{3%-  
/* (non-Javadoc) vF&0I2T~l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n&a\mGF  
*/ %;|dEY  
public void sort(int[] data) { Qc=-M'9  
int temp; $~VIx% h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U9*< dR  
} &0H_W xKeB  
} ; ), ,Hk  
} E}THG=6  
z@ `u$D$n  
} hm k ~  
ZE= Yn~XM  
冒泡排序: P,(_y8  
g++-v HD  
package org.rut.util.algorithm.support; EEo I|  
(_6JQn  
import org.rut.util.algorithm.SortUtil; #k[Y(_  
RKM5FXX  
/** 3(nnN[?N,5  
* @author treeroot a5/Dz&>j6  
* @since 2006-2-2 G]{^.5  
* @version 1.0 >>"@ 0tO  
*/ L"NfOST3'R  
public class BubbleSort implements SortUtil.Sort{ lL 50PU  
lR9uD9Dr  
/* (non-Javadoc) n,LM"N:   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kP5G}Bp  
*/ EziGkbpd@  
public void sort(int[] data) { c=QN!n:  
int temp; Jr= fc*f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ d0&  
if(data[j] SortUtil.swap(data,j,j-1); FMhuCl2  
} )heHERbJ  
} ^FVmP d*1  
} N2Ysi$  
} 71ab&V il  
b'z\|jY  
} M{jq6c  
`%EcQ}Nr  
选择排序: GV28&!4sS  
UX<)hvKj  
package org.rut.util.algorithm.support; pf+VYZ#)  
tkkh<5{C   
import org.rut.util.algorithm.SortUtil; -M_>]ubG  
xI/8[JW*  
/** s:(z;cj/  
* @author treeroot 'KT(;Vof  
* @since 2006-2-2 2;J\Z=7  
* @version 1.0 6V}xgfB  
*/ ^".6~{  
public class SelectionSort implements SortUtil.Sort { 6j+X@|2^  
;*ULrX4[  
/* O: #Sj jK  
* (non-Javadoc) r* l c#  
* F?0Q AA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZ +K4H  
*/  WK@<#  
public void sort(int[] data) { }T AG7U*  
int temp; ez)Ks`  
for (int i = 0; i < data.length; i++) { RCxwiZaf33  
int lowIndex = i; <`NsX 6t  
for (int j = data.length - 1; j > i; j--) { 5h Dy62PRr  
if (data[j] < data[lowIndex]) { [N}QCy  
lowIndex = j; B@VAXmCaoV  
} q)KOI` A  
} {MTtj4$  
SortUtil.swap(data,i,lowIndex); (d (>0YMv  
} 8V9OMOt!  
} =dQ/^C_hj  
4\g[&  
} !^v~hD$_q  
z|Yt|W  
Shell排序: @A(jo32  
C5$?Y8B3  
package org.rut.util.algorithm.support; -P&uY`  
[9:";JSl"Y  
import org.rut.util.algorithm.SortUtil; (0.JoeA`y  
R*XZPzg%  
/** yF%e)6  
* @author treeroot Q<ia  
* @since 2006-2-2 Dl AwB1Ak  
* @version 1.0 KaH e(  
*/ C*B5"s"  
public class ShellSort implements SortUtil.Sort{ *K@O3n   
Y6v#0pT  
/* (non-Javadoc) \Sv|yQUT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (TO<SY3AB  
*/ W:6#0b"_#  
public void sort(int[] data) { 25 :vc0  
for(int i=data.length/2;i>2;i/=2){ n%i L+I  
for(int j=0;j insertSort(data,j,i); `D$^SHfyz  
} o_[~{@RoR  
} 2;3&&yK2b  
insertSort(data,0,1); W- nS{v(  
} $#3[Z;\  
`Mcg&Mi~  
/** qPWf=s7!  
* @param data :}/\hz ,  
* @param j LP'q$iB!  
* @param i ;OD-?bC  
*/ H\N} 0^ea  
private void insertSort(int[] data, int start, int inc) { x K\i&A  
int temp; : yq2 XE%r  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6E:H  
} ZM <UiN  
} ;l `Ufx  
} pGy k61  
w(t1m]pF[  
} Q)qJ6-R|HD  
nn$^iw`  
快速排序: EM!S ;i  
ITi#p%  
package org.rut.util.algorithm.support; !|]k2=+I  
yf`_?gJ6d  
import org.rut.util.algorithm.SortUtil;  cz>)6#&O  
TBba3%  
/** a2i:fz=[  
* @author treeroot PYY<  
* @since 2006-2-2 ! r/~D |  
* @version 1.0 -U?%A:,a|  
*/ Br&&#  
public class QuickSort implements SortUtil.Sort{ aG4 ^xOD  
\Cin%S. C  
/* (non-Javadoc) jUR* |  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ndBT+ i  
*/ Cw kQhj?  
public void sort(int[] data) { LTH, a?lD  
quickSort(data,0,data.length-1); 2Ur&_c6 P  
} Aw4)=-LKO  
private void quickSort(int[] data,int i,int j){ ]n<B a7Y  
int pivotIndex=(i+j)/2; oWi#?'  
file://swap WX_g  
SortUtil.swap(data,pivotIndex,j); S1'?"zAmd  
_^zs(  
int k=partition(data,i-1,j,data[j]); IB 4L(n1  
SortUtil.swap(data,k,j); 1p&=tN  
if((k-i)>1) quickSort(data,i,k-1); =?wDQ:  
if((j-k)>1) quickSort(data,k+1,j); QR8]d1+GV  
TL7qOA7^X  
} h^`@%g9 S  
/** MBKF8b'k  
* @param data kApDD[ N  
* @param i /Dt:4{aTOC  
* @param j ui|6ih$+  
* @return T?=]&9Y'  
*/ d7zZ~n  
private int partition(int[] data, int l, int r,int pivot) {   uk,9N  
do{ In!^+j  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b].U/=Hs  
SortUtil.swap(data,l,r); xXmlHo<D  
} I69Z'}+qz  
while(l SortUtil.swap(data,l,r); !bnnUCTb\  
return l; H!6&'=c{k  
} tI#65ox#  
2bw.mp&v1  
} ;'Z"CbS+  
o54=^@>O<j  
改进后的快速排序: xcQ^y}JN  
D(dV{^} 9  
package org.rut.util.algorithm.support; oY,{9H37b  
:J2^Y4l2  
import org.rut.util.algorithm.SortUtil; f><V;D#  
v@s"*E/PF7  
/** Z.unCf3Q  
* @author treeroot Jcs /i  
* @since 2006-2-2 vQnhb %  
* @version 1.0 E piF$n  
*/ 'xa EG,P  
public class ImprovedQuickSort implements SortUtil.Sort { iS"6)#a72  
I|c?*~7*  
private static int MAX_STACK_SIZE=4096; 0QrRG$<4X  
private static int THRESHOLD=10; R3)ccom  
/* (non-Javadoc) AxTFV ot  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o: > (Tv  
*/ bu \(KR$s  
public void sort(int[] data) { EqIs&){  
int[] stack=new int[MAX_STACK_SIZE]; O~ x{p,s U  
;<E?NBV^  
int top=-1; ]rg-=Y k  
int pivot; ymqn1ja1  
int pivotIndex,l,r; n: {f\  
<4/q5*&  
stack[++top]=0; |q\i, }  
stack[++top]=data.length-1; cSG(kFQ  
> #9 a&O  
while(top>0){ dpt P(H  
int j=stack[top--]; ZGCp[2$  
int i=stack[top--]; oq1wU@n  
l-h[I>TW  
pivotIndex=(i+j)/2; &f?JtpB  
pivot=data[pivotIndex]; NxK.q)tj6  
rfSEL 57'  
SortUtil.swap(data,pivotIndex,j); 29|nt1Z  
L/vw7XNrX  
file://partition gS]  
l=i-1; 7M?Sndp$  
r=j; _@y9=e  
do{ 9O^~l2`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G2@'S&2@s  
SortUtil.swap(data,l,r); 9fM=5  
} P$^I\aGO  
while(l SortUtil.swap(data,l,r); `(O#$n  
SortUtil.swap(data,l,j); $,I@c"m{  
JEZ0O&_R  
if((l-i)>THRESHOLD){ ;4v`FC>  
stack[++top]=i; 7.n\a@I/  
stack[++top]=l-1; gssEdJ  
} Jiru~Vo+  
if((j-l)>THRESHOLD){ b#t5Dve  
stack[++top]=l+1; XQ}7.u!  
stack[++top]=j; NPa4I7`A  
} U56g|V  
Eb29tq  
} "l#"c{ee{  
file://new InsertSort().sort(data); ^hT2 ed +  
insertSort(data); V$u:5"qu0  
} I_`NjJ;61  
/** MBQ|*}+;  
* @param data Uz]=`F8  
*/ l6IT o@&J  
private void insertSort(int[] data) { ]}]+aB  
int temp; j[t2Bp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @|'9nPern  
} ;vpq0t`  
} {sq:vu@NC  
} a/%qn-i|p  
"#f5jH  
} -h8Z@r~a/  
6D{70onY+  
归并排序: * $1F|G  
, BZ(-M  
package org.rut.util.algorithm.support; 0+e 0<'  
2:yXeSeA  
import org.rut.util.algorithm.SortUtil; X1V~.k vt)  
hOdU%  
/** 2G3Hi;q18  
* @author treeroot ^R7X!tOq4  
* @since 2006-2-2 YXdo&'Q<qX  
* @version 1.0 ?D_}',Wx  
*/ :."+&gb  
public class MergeSort implements SortUtil.Sort{ yaHkWkl =  
9u3P>a~b  
/* (non-Javadoc) %\!0*(8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2%H_%Zu9  
*/ e?]HNy  
public void sort(int[] data) { *r!qxiY= r  
int[] temp=new int[data.length]; 3z"%ht~;  
mergeSort(data,temp,0,data.length-1); : 'jVA  
} r,L`@A=v  
RYl\Q,#  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4 .(5m\s!  
int mid=(l+r)/2; aH, NS   
if(l==r) return ; %[o($a$  
mergeSort(data,temp,l,mid); YelF)Na  
mergeSort(data,temp,mid+1,r); {?3i^Q=V  
for(int i=l;i<=r;i++){ Vk76cV D  
temp=data; N7;kWQH  
} @TzUc E  
int i1=l; zMO xJ   
int i2=mid+1; ]2[\E~^KU  
for(int cur=l;cur<=r;cur++){ B.gEV*@  
if(i1==mid+1) CT<z1)#@^  
data[cur]=temp[i2++]; " #U-*Z7  
else if(i2>r) 'P%&*%  
data[cur]=temp[i1++]; wx2 z9Q  
else if(temp[i1] data[cur]=temp[i1++]; byZj7q5&Q  
else X|R"8cJ  
data[cur]=temp[i2++]; ]RF(0;  
} r -uu`=,  
} D<*) ^^  
Q7mikg=1-  
} ZA'0 q  
-KqMSf&9  
改进后的归并排序: 'loko#6  
^j1G08W  
package org.rut.util.algorithm.support; Gxt6]+r  
!4YmaijeN  
import org.rut.util.algorithm.SortUtil; X7MA>j3m  
T@n};,SQ  
/** gN<J0c)  
* @author treeroot Scmew  
* @since 2006-2-2 /-=h|A#Kh  
* @version 1.0 V.ae 5@;  
*/ HisH\z/i5)  
public class ImprovedMergeSort implements SortUtil.Sort { Enp;-wG:-  
7--E$ !9O,  
private static final int THRESHOLD = 10; h6tYy_(G  
tC7 4=  
/* =>GGeEL  
* (non-Javadoc) tS,AS,vy]  
* 8N`Rf; BM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <DEu]-'>  
*/ $bZ5@)E  
public void sort(int[] data) { *I k/Vu%;  
int[] temp=new int[data.length]; |"eC0u  
mergeSort(data,temp,0,data.length-1); :G5O_T$  
} e&Z ?I2J  
w@,v$4Oi  
private void mergeSort(int[] data, int[] temp, int l, int r) { mZjP;6  
int i, j, k; b$`/f:_  
int mid = (l + r) / 2; UcB2Aauji  
if (l == r) w+XwPpM0.n  
return; [ o 6  
if ((mid - l) >= THRESHOLD) J@ 8OU  
mergeSort(data, temp, l, mid); g}*p(Tp9:  
else )k4&S{=  
insertSort(data, l, mid - l + 1); ~!/agLwY  
if ((r - mid) > THRESHOLD)  ?H8dyQ5"  
mergeSort(data, temp, mid + 1, r); ]tmMk7  
else veS) j?4  
insertSort(data, mid + 1, r - mid); "R% RI( y{  
xhMAWFg|  
for (i = l; i <= mid; i++) { $ao7pvU6  
temp = data; f{{J_""?&  
} MK!Aq^Jz  
for (j = 1; j <= r - mid; j++) { L#!m|_Mz  
temp[r - j + 1] = data[j + mid]; }%0X7'  
} ._&SS,I5VZ  
int a = temp[l]; ++=jh6  
int b = temp[r]; Rq|]KAN  
for (i = l, j = r, k = l; k <= r; k++) { y%<CkgZS  
if (a < b) { NA#,q 8  
data[k] = temp[i++]; ZRFHs>0  
a = temp; 1_M}Dc+J  
} else { [4;G^{ bX  
data[k] = temp[j--]; 6DC+8I<  
b = temp[j]; Mh}vr%0;)  
} YuoIhT  
} `9acR>00$  
} <2O XXQ1  
v:NQrN  
/** ?5j~"  
* @param data U~oGg$  
* @param l ##OCfCW  
* @param i R|_._Btu!  
*/ ylQ9Su>o  
private void insertSort(int[] data, int start, int len) { A}_pJH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p xW*kS  
} ?0lz!Nq'S  
} P4 #j;k4P  
} lA4TWU (]  
} EWOa2^%}Z\  
vXG?8Q  
堆排序: WDt6{5T  
XaMsIyhI  
package org.rut.util.algorithm.support; +/hd;s$x  
y!_8m#n S  
import org.rut.util.algorithm.SortUtil; y43ha  
v <OZ # L$  
/** a`LkP%  
* @author treeroot D?4bp'0 3  
* @since 2006-2-2 4EaxU !BT  
* @version 1.0 .sKfwcYu4  
*/ /+m2|Ij(  
public class HeapSort implements SortUtil.Sort{ pv"s!q&  
|AS<I4+&  
/* (non-Javadoc) f{P?|8u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]oC"gWDYu  
*/ ! w;/J^  
public void sort(int[] data) { [c v!YE  
MaxHeap h=new MaxHeap(); -TS,~`O  
h.init(data); 8fP TxvXqL  
for(int i=0;i h.remove(); >oC{YYcK  
System.arraycopy(h.queue,1,data,0,data.length); `O0y8  
} d;{k,rP6  
O9AFQ)u   
private static class MaxHeap{ Ep3I*bQ Y  
aS~~*UHW  
void init(int[] data){ [* @ +  
this.queue=new int[data.length+1]; eDvh3Y<D  
for(int i=0;i queue[++size]=data; }^^c/w_  
fixUp(size); flOXV   
} ]kF1~kXBe  
} J5Ti@(G5V  
FOjX,@x&  
private int size=0; n+nZ;GJ5d  
iU(B#ohW"  
private int[] queue; @ 'U`a4  
6Xbf3So  
public int get() { ]ZNFrpq  
return queue[1]; Q8$;##hzt  
} {uJ"%  
SIc~cZ!Yu  
public void remove() { _/Ay$l;F  
SortUtil.swap(queue,1,size--); `g0^ W/ j  
fixDown(1); k(_OhV_  
} DhD##5a  
file://fixdown <5}j(jxz}  
private void fixDown(int k) { : t /0  
int j; aX Ie  
while ((j = k << 1) <= size) { xC}'"``s  
if (j < size %26amp;%26amp; queue[j] j++; gAf4wq  
if (queue[k]>queue[j]) file://不用交换 !T 9CpIM%  
break; 8~ &=vc  
SortUtil.swap(queue,j,k); 6?[SlPPE1  
k = j; ,LDL%<7t  
} @Bn4ZF B@  
} m;L 3c(r.  
private void fixUp(int k) { 7xYz9r)w`  
while (k > 1) { )g }G{9M^  
int j = k >> 1; h0I5zQZm  
if (queue[j]>queue[k]) "yj_v\@4  
break; eC L_c>3!  
SortUtil.swap(queue,j,k); $RUK<JN$6  
k = j; u! dx+vd  
} ^Y5I OX:  
} MH0wpHz  
qVH.I6)  
} (]PH2<3t  
;' H\s  
} D0z[h(m  
s!>9od6^  
SortUtil: W=OryEV?  
+;M 5Sp  
package org.rut.util.algorithm; 0)ZLdF_6  
Qqk(,1u  
import org.rut.util.algorithm.support.BubbleSort; iSg0X8J)  
import org.rut.util.algorithm.support.HeapSort; Q{an[9To~P  
import org.rut.util.algorithm.support.ImprovedMergeSort; T8x8TN"  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1kR. .p<"  
import org.rut.util.algorithm.support.InsertSort; {-f%g-@L6|  
import org.rut.util.algorithm.support.MergeSort; eKZS_Qd  
import org.rut.util.algorithm.support.QuickSort; C[d1n#@r  
import org.rut.util.algorithm.support.SelectionSort; ]>%2,+5  
import org.rut.util.algorithm.support.ShellSort; 3i'01z  
VL'wrgk  
/** WWo"De@  
* @author treeroot e,lLHg  
* @since 2006-2-2 ]E'?#z.t  
* @version 1.0 !nlr!+(fV  
*/ xEeHQ7J  
public class SortUtil { 7AWq3i{  
public final static int INSERT = 1; A}&YK,$5ED  
public final static int BUBBLE = 2; .rnT'""i<5  
public final static int SELECTION = 3; rBy0hGx  
public final static int SHELL = 4; Upcx@zJ  
public final static int QUICK = 5; #,1z=/d.  
public final static int IMPROVED_QUICK = 6; lNl.lI\t)y  
public final static int MERGE = 7; %r*,m3d  
public final static int IMPROVED_MERGE = 8; 0Ub'=`]5a  
public final static int HEAP = 9; E> $_ $'  
pZ3sp!  
public static void sort(int[] data) { T<NOL fk66  
sort(data, IMPROVED_QUICK); #f/4%|t:  
} G6G-qqXy6  
private static String[] name={ ]qu6/Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 65*Hf3~~  
}; w{So(AF  
Q1rEUbvCE  
private static Sort[] impl=new Sort[]{ NL;sn"  
new InsertSort(), `H$=hr  
new BubbleSort(), n&zEYCSI  
new SelectionSort(), _`p^B%[  
new ShellSort(), _VTpfeL@n  
new QuickSort(), MI(;0   
new ImprovedQuickSort(), *[*q#b$j  
new MergeSort(), %Lb cwh(9  
new ImprovedMergeSort(), ]<L~f~vU  
new HeapSort() g j]8/~lr  
}; 5\w*W6y  
<W)F{N?  
public static String toString(int algorithm){ MNb9~kM  
return name[algorithm-1]; x$D^Bh,  
} 9yWf*s<  
I,HtW),  
public static void sort(int[] data, int algorithm) { e6 x#4YH  
impl[algorithm-1].sort(data); *N:0L,8  
} *+2_!=4V  
@!O(%0 =  
public static interface Sort { DT)] [V^w  
public void sort(int[] data); 8{ =ha  
} ~(huUW  
AXSip  
public static void swap(int[] data, int i, int j) { ' i<4;=M&  
int temp = data; Un,'a8>V`  
data = data[j]; udIm}jRA"  
data[j] = temp; n;$u%2t2  
} s S#/JLDx]  
} 3}&3{kt  
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