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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。 g{s'GyV8t  
插入排序: JYqSL)Ta*t  
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package org.rut.util.algorithm.support;  EEy$w1ec  
lEL78l.  
import org.rut.util.algorithm.SortUtil; 01a-{&   
/** 3Q}$fQ&S  
* @author treeroot !,$i6gm  
* @since 2006-2-2 ^u)z{.z'H/  
* @version 1.0 qf'm=efRyu  
*/ uw\1b.r'B  
public class InsertSort implements SortUtil.Sort{ {WN(&eax  
[ANuBNF  
/* (non-Javadoc) w6|9|f/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6x{<e4<n  
*/ Tz&Y]#h_  
public void sort(int[] data) { u}hF8eD  
int temp; ,M !tm7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <M?:  
} |Q~cX!;  
} 6bc3 37b  
} 1a0kfM$  
RH0>ZZR  
} c2l_$p  
_hf4A8ak  
冒泡排序: Kz8:UG(  
y2HxP_s?P?  
package org.rut.util.algorithm.support; =64r:E  
Eq% @"-m o  
import org.rut.util.algorithm.SortUtil; D,l,`jv*  
%9C@ Xl  
/** 5vzceQE}  
* @author treeroot Q }k.JS~#  
* @since 2006-2-2 I&c ~8Dw  
* @version 1.0 )-rW&"{U  
*/ H14Ic.&  
public class BubbleSort implements SortUtil.Sort{ Huw\&E  
}'"Gr%jf(  
/* (non-Javadoc) 0x2!<z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A?5E2T1L%.  
*/ Zx }&c |Q  
public void sort(int[] data) { Z]w# vLR  
int temp; /h2b;"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bte~c  
if(data[j] SortUtil.swap(data,j,j-1); !4"sX+z9  
} fpyz'   
} ]36sZ *  
} qr\ !*\9  
} t,)N('m}=  
bZ _mYyBh  
} >M!xiQX  
_GQz!YA  
选择排序: dGfVZDsr]  
gxPx&Z6jF  
package org.rut.util.algorithm.support; Q\ ^[!|  
UCrh/bTm  
import org.rut.util.algorithm.SortUtil; YKZrEP 4^  
7)rWw<mY  
/** l7(!`NPbC  
* @author treeroot gJt`?8t  
* @since 2006-2-2 6~:Sgt nU  
* @version 1.0 jdeV|H} u  
*/ }G46g#_6d>  
public class SelectionSort implements SortUtil.Sort { stl 1Q O(h  
c47")2/yO  
/* `pZs T ^G[  
* (non-Javadoc) %wV>0gQTf  
* }H4=HDO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G}@#u9  
*/ j Ib  
public void sort(int[] data) { 8qi+IGRg  
int temp; x Ha=3n  
for (int i = 0; i < data.length; i++) { inPJ2uBD\^  
int lowIndex = i; C) QKPT  
for (int j = data.length - 1; j > i; j--) { Sx gYjIa-  
if (data[j] < data[lowIndex]) { I7QCYB|  
lowIndex = j; :A46~UA!$  
} :^ i9]  
} '+'CbWgY  
SortUtil.swap(data,i,lowIndex); <<9Va.  
} ! ueN|8'  
} ~wnOV#v  
Z{IUy  
} :R6bq!  
^_I} x)i*@  
Shell排序: bok.j  
<BWkUZz\P|  
package org.rut.util.algorithm.support; sGDV]~E  
j;yf8Nf  
import org.rut.util.algorithm.SortUtil; !2CL1j0(  
Mkp/0|Q*  
/** YIt9M,5/Q  
* @author treeroot M x5`yT7  
* @since 2006-2-2 %HQ.|  
* @version 1.0 sH,kW|D  
*/ /z7VNkD  
public class ShellSort implements SortUtil.Sort{ 7x]4`#u  
j83? m  
/* (non-Javadoc) @4~=CV%j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mAgF73,3  
*/ J`M&{UP  
public void sort(int[] data) {  , iNv'  
for(int i=data.length/2;i>2;i/=2){ JN/UUfj  
for(int j=0;j insertSort(data,j,i); 4Ph0:^i_  
} vP%tk s+.  
} ~ jU/<~s  
insertSort(data,0,1); Hi! Jj  
} 80}+MWdo  
q:>^ "P{  
/** |as!Ui/J/  
* @param data 3>ex5  
* @param j ] U@o0  
* @param i foF19_2 ,  
*/ 4!62/df  
private void insertSort(int[] data, int start, int inc) { %1 KbS [  
int temp; ?)Nj c&G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uaw~r2  
} o!TQk{0  
} dCYCHHHF  
} Zt -1h{7  
dBsX*}C  
} {n3EGSP#  
uy_wp^  
快速排序: =-cwXo{Q.O  
!9*c8bL D  
package org.rut.util.algorithm.support; %z]U LEYrZ  
i LBvGZ<9  
import org.rut.util.algorithm.SortUtil; +.B<Hd  
U=Y)V%  
/** 1[F3 Z  
* @author treeroot HysS_/t~  
* @since 2006-2-2 Z#d&|5Xj  
* @version 1.0 }TRAw#h  
*/ F~#zxwd  
public class QuickSort implements SortUtil.Sort{ +'@+x'/{^  
h!@|RW&}qX  
/* (non-Javadoc) <^.=>Q0 S\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gbOpj3  
*/ !{et8F@d|  
public void sort(int[] data) { E "iUq  
quickSort(data,0,data.length-1); SEwku}  
} 2Q7R6*<N:  
private void quickSort(int[] data,int i,int j){ uf<@ruN  
int pivotIndex=(i+j)/2; MvLs%GE%  
file://swap mpC`Yk  
SortUtil.swap(data,pivotIndex,j); Ok5<TZ6t4k  
iF5'ygR-Z  
int k=partition(data,i-1,j,data[j]); c:S] R"  
SortUtil.swap(data,k,j); W+wA_s2&D  
if((k-i)>1) quickSort(data,i,k-1); 5V[oE\B  
if((j-k)>1) quickSort(data,k+1,j); ulT8lw='  
. JX EK  
} l5%G'1w#,j  
/** ,&PE6h n  
* @param data VLsxdwHgb  
* @param i MfO:m[s  
* @param j 7`vEe 'qz  
* @return CQ7{1,?2  
*/ G2 ]H6G$M  
private int partition(int[] data, int l, int r,int pivot) { !J1rRPV  
do{ e:E0"<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'oNO-)p\#!  
SortUtil.swap(data,l,r); DBLk!~IF  
} 8bK|:B#6,  
while(l SortUtil.swap(data,l,r); _$NIp `d  
return l; q>f<u&  
} C$Lu]pIL*  
r0t^g9K0  
} (2ur5uk+  
H~eRT1  
改进后的快速排序: vr#+0:|  
-&82$mj  
package org.rut.util.algorithm.support; I +5)Jau^S  
)M=ioE8`h  
import org.rut.util.algorithm.SortUtil; kh~'Cn "O  
Mwb/jTp  
/** r?m+.fJB  
* @author treeroot ^L1L=c;,  
* @since 2006-2-2 (Q[fS:U  
* @version 1.0 76tdJ!4Z  
*/ -U~   
public class ImprovedQuickSort implements SortUtil.Sort { `.x$7!zLC  
h'J|K^na  
private static int MAX_STACK_SIZE=4096; !f>d_RG  
private static int THRESHOLD=10; rrg96WD  
/* (non-Javadoc)  $p!yhn7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xX3'bsN  
*/ ^ PI5L  
public void sort(int[] data) { YzosZ! L!<  
int[] stack=new int[MAX_STACK_SIZE]; dpQG[vXe  
{ pu85'DV  
int top=-1; J{[n?/A{  
int pivot; 7e7 M@8+4  
int pivotIndex,l,r; DU%w1+u  
1}hIW":3Sr  
stack[++top]=0; 4v p  
stack[++top]=data.length-1; ~/NKw:  
A,su;Q h  
while(top>0){ i'd2[A.7I  
int j=stack[top--]; ,h|qi[7  
int i=stack[top--]; f~E*Zz`;  
(>J4^``x=  
pivotIndex=(i+j)/2; MRU7W4W-~/  
pivot=data[pivotIndex]; s}5cSU!|  
b[z]CP  
SortUtil.swap(data,pivotIndex,j); jVLA CWH  
2._X|~0a  
file://partition JvYPC  
l=i-1; 5<I   
r=j; _X ~87  
do{ 86@c't@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3mPjpm  
SortUtil.swap(data,l,r); :^UFiUzrE  
} 'c\iK=fl  
while(l SortUtil.swap(data,l,r); B1]bRxwn?  
SortUtil.swap(data,l,j); 2|\A7.  
ld$i+6|   
if((l-i)>THRESHOLD){ !=;XBd-  
stack[++top]=i; aA7=q=  
stack[++top]=l-1; W\1i,ew>  
} .xf<=ep  
if((j-l)>THRESHOLD){ [c_|ob]  
stack[++top]=l+1; E{6~oZ#L  
stack[++top]=j; f3`7tA  
} 2Q;9G6p  
p=/m  
} XdH\OJ  
file://new InsertSort().sort(data); at2FmBdu C  
insertSort(data); UR:aD_h  
} nRd)++  
/** 4|A>b})H  
* @param data zByT$P-  
*/ ceNix!P  
private void insertSort(int[] data) { :Hxv6  
int temp; .^J2.>.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MX>[^}n  
} =PGs{?+&O  
} c1X1+b,  
} 0"~i ^   
"~TA SX_?  
} M$f7sx  
O25lLNmO  
归并排序: R^{)D3  
=4d (b ;  
package org.rut.util.algorithm.support; HF|oBX$_  
Spt ? >sm  
import org.rut.util.algorithm.SortUtil; Y8flrM2CwG  
JTi!Xu5Jq  
/** 5zON}"EC  
* @author treeroot :qC '$dO!  
* @since 2006-2-2 r1RGTEkD  
* @version 1.0 +{sqcr1G  
*/ s/089jlc  
public class MergeSort implements SortUtil.Sort{ <\?wAjc,  
h gJ[LU|>  
/* (non-Javadoc) |>@W ]CX[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G[jW<'f  
*/ iQ{G(^sZN  
public void sort(int[] data) { _X?^Cy  
int[] temp=new int[data.length]; ctcS:<r/3@  
mergeSort(data,temp,0,data.length-1); V|\7')Qq  
} F;^F+H  
e%W$*f  
private void mergeSort(int[] data,int[] temp,int l,int r){ yCCrK@{oo  
int mid=(l+r)/2; U`hY{E;  
if(l==r) return ; F5S@I;   
mergeSort(data,temp,l,mid); YKQr, Now  
mergeSort(data,temp,mid+1,r); uw lr9nB  
for(int i=l;i<=r;i++){ \d::l{VB  
temp=data; @JdZ5Q  
} EJ2yO@5O  
int i1=l; <FZ@Q[RP  
int i2=mid+1; 3_A *$  
for(int cur=l;cur<=r;cur++){ hMtf.3S7c  
if(i1==mid+1) 86nN"!{l:  
data[cur]=temp[i2++]; arf8xqR-U]  
else if(i2>r) v%Wx4v@%SE  
data[cur]=temp[i1++]; ,AT[@  
else if(temp[i1] data[cur]=temp[i1++]; (p%>j0<  
else \TU3rk&X  
data[cur]=temp[i2++]; y(K" -?  
} Z0l+1iMx  
} K _&4D'  
Mw9 \EhA  
} V')0 Mr  
#:SNHM^><  
改进后的归并排序: 4`,j = 3  
Dc)dE2  
package org.rut.util.algorithm.support; 7`u$  
hpU2  
import org.rut.util.algorithm.SortUtil; 2;w*oop,O  
5h;+Ky!I  
/** ->N8#XH2=  
* @author treeroot zXRlo]  
* @since 2006-2-2 /hO1QT}xd  
* @version 1.0 orb_"Qw  
*/ + nF'a(  
public class ImprovedMergeSort implements SortUtil.Sort { ~K@'+5Pc  
2WG>, 4W2  
private static final int THRESHOLD = 10; .YuJJJv  
"Wx]RN:  
/* NIw\}[-Z0E  
* (non-Javadoc) 5xL~`-IA&v  
* 0Lb4'25.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jec'`,Y  
*/ ({o'd=nO  
public void sort(int[] data) { l#n,Fg3  
int[] temp=new int[data.length]; 08*v~(T  
mergeSort(data,temp,0,data.length-1); -IV]U*4  
} 4WK3.6GN  
V*~Zs'L'E  
private void mergeSort(int[] data, int[] temp, int l, int r) { mkR2i>  
int i, j, k; #KO,~]k5|e  
int mid = (l + r) / 2; 2it?$8#i  
if (l == r) 3 h<,  
return; ]kboG%Dl?9  
if ((mid - l) >= THRESHOLD) [ +P#tIL  
mergeSort(data, temp, l, mid); jVq(?Gc  
else l} qE 46EL  
insertSort(data, l, mid - l + 1); ^b %0 B  
if ((r - mid) > THRESHOLD) 4f<$4d^md  
mergeSort(data, temp, mid + 1, r); Q%f|~Kl-hd  
else <m'ow  
insertSort(data, mid + 1, r - mid); M8u<qj&<O  
N?.%?0l  
for (i = l; i <= mid; i++) { 9+pmS#>_  
temp = data; A= w9V  
} Nv"EV;$  
for (j = 1; j <= r - mid; j++) { )RcL/n  
temp[r - j + 1] = data[j + mid]; ]~3U  
} N;[>,0&z  
int a = temp[l]; ccL~#c0P7  
int b = temp[r]; 3'X.}>o   
for (i = l, j = r, k = l; k <= r; k++) { (P`3 @H  
if (a < b) { +U@<\kIF  
data[k] = temp[i++]; ZzX~&95G  
a = temp; D|.ic!w'  
} else { twx[ s$O'b  
data[k] = temp[j--]; & GreN  
b = temp[j]; @/1w4'M  
} h?pkE  
} D:K4H+ch  
} ()H:UvM=t  
Km^&<3ch#  
/** ,\@O(; mF  
* @param data J4\qEO  
* @param l h5K$mA5  
* @param i CoA6  
*/ 8}(]]ayl  
private void insertSort(int[] data, int start, int len) { xL" |)A =  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I&YSQK:b  
} :GJ &_YHf  
} F,'exuZ  
} M8TSt\  
} -ne Kuj  
uAWM \?  
堆排序: Zcc9e 03  
`Ry]y"K  
package org.rut.util.algorithm.support; LupkrxV  
]EpWSs!"g  
import org.rut.util.algorithm.SortUtil; x|5k<CiA  
b4pm_Um  
/** =ha{Ziryo  
* @author treeroot & :7ZQ1  
* @since 2006-2-2 3=L.uXVb  
* @version 1.0 Ft!],n-n*  
*/ Tq~=TSD  
public class HeapSort implements SortUtil.Sort{ vz!s~cAt  
71{p+3Z&  
/* (non-Javadoc) k|!EDze43?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O &-wxJ]S  
*/ ]H1I,`=@  
public void sort(int[] data) { =3v]gOcO  
MaxHeap h=new MaxHeap(); LA)[ip4  
h.init(data); %?Ev|:i`@  
for(int i=0;i h.remove(); ~T89_L  
System.arraycopy(h.queue,1,data,0,data.length); mN19WQ(r  
} 6!(@@^7{*  
Q0ON9gqqv  
private static class MaxHeap{ \0gM o&  
(zFi$  
void init(int[] data){ k Zq!&  
this.queue=new int[data.length+1]; &EnuE0BD  
for(int i=0;i queue[++size]=data; ^) s2$A:L  
fixUp(size); lO_UPC\@fw  
} %p 0xM  
} {qa Aq%'  
@#-q^}3  
private int size=0; C;vtY[}<  
Vkc#7W(  
private int[] queue; w/K_B:s  
HC}YY2  
public int get() { :]1 TGfS  
return queue[1]; 2Roc|)-47  
} Kp,M"Y  
aT$9;  
public void remove() { Xqm::1(-(  
SortUtil.swap(queue,1,size--); ) v,:N.@Q  
fixDown(1); 9uQ 4u/F  
} J>bJ 449B  
file://fixdown UCClWr  
private void fixDown(int k) { ,9o"43D:a|  
int j; dB5b@9*  
while ((j = k << 1) <= size) { >#y^;/bb  
if (j < size %26amp;%26amp; queue[j] j++; bAm(8nT7w  
if (queue[k]>queue[j]) file://不用交换 }7.PH'.8  
break; ;y2/-tL?  
SortUtil.swap(queue,j,k); d:U9pC$  
k = j; Zc`BiLzrIG  
} GHeVp/u  
} se>MQM5 )  
private void fixUp(int k) { '&|=0TDd+  
while (k > 1) { ,5*eX  
int j = k >> 1; L~NbdaO  
if (queue[j]>queue[k]) 8UVmv=T  
break; ;IokThI  
SortUtil.swap(queue,j,k); 9b*nLyYVz  
k = j; Z KckAz\#  
} 2j[&=R/.  
} b^$|Nz;  
DY?Kfvef  
} |Xk4&sDrK  
Z7?~S2{c  
} '`uwJ&@  
y)@[Sl>  
SortUtil: :65~[$2  
os]8BScx  
package org.rut.util.algorithm; 5qP:/*+  
qDfd.gL  
import org.rut.util.algorithm.support.BubbleSort; [F6U+1n8e  
import org.rut.util.algorithm.support.HeapSort; SK#(#OQoh  
import org.rut.util.algorithm.support.ImprovedMergeSort; *9{Z$IA9w  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ub * wuI  
import org.rut.util.algorithm.support.InsertSort; uPl\I6k  
import org.rut.util.algorithm.support.MergeSort; `p;I}  
import org.rut.util.algorithm.support.QuickSort; 9Q+'n$s0^  
import org.rut.util.algorithm.support.SelectionSort; la+[bm< v  
import org.rut.util.algorithm.support.ShellSort; SrK)t.oK  
XnWr5-;  
/** N/K.%<h  
* @author treeroot 9B7^lR  
* @since 2006-2-2 [+DW >Et  
* @version 1.0 A'&K/)Z  
*/ -u8NF_{c  
public class SortUtil { ptZ <ow&  
public final static int INSERT = 1; ^i} L-QR  
public final static int BUBBLE = 2; yLQ*"sw\  
public final static int SELECTION = 3; x-?Sn' m  
public final static int SHELL = 4; uvG]1m#  
public final static int QUICK = 5; dKxyA"@  
public final static int IMPROVED_QUICK = 6; 1jF`5k  
public final static int MERGE = 7; PU1Qsb5  
public final static int IMPROVED_MERGE = 8; cj'}4(  
public final static int HEAP = 9; ]n~ilS.rkl  
`I,,C,{C  
public static void sort(int[] data) { n*{sTT  
sort(data, IMPROVED_QUICK);  O2%?  
} De(Hw& IV  
private static String[] name={ ~,B5Hc 2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aD$v2)RR  
}; S_IUV)  
TmV,&['mg  
private static Sort[] impl=new Sort[]{ Y/ .Z .FD`  
new InsertSort(), Us0EG\Y  
new BubbleSort(), T"DlT/\  
new SelectionSort(), ^8AXxE  
new ShellSort(), CyXR i}W.  
new QuickSort(), 428>BQA  
new ImprovedQuickSort(), |='z{WS  
new MergeSort(), Qh'ATo  
new ImprovedMergeSort(), >^*+iEe  
new HeapSort() M 4?ig}kh  
}; 2 Cv4=S  
?1K#dC52#  
public static String toString(int algorithm){ vbC\?\_  
return name[algorithm-1]; #nPQ!NB/  
} &b%zQ4%d-`  
PC-"gi =h  
public static void sort(int[] data, int algorithm) { /*X2c6<d  
impl[algorithm-1].sort(data); I ,z3xU  
} =aBctd:eX`  
~3WF,mW  
public static interface Sort { )6D,d5<  
public void sort(int[] data); :i. {  
} Wg<(ms dj  
h_+dT  
public static void swap(int[] data, int i, int j) { rFj-kojg  
int temp = data; vPTM  
data = data[j]; |w<H!lGe!$  
data[j] = temp; 2;DuHO1  
} D)m5  
} M$>1L  
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