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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。 ZkdSgc')  
插入排序: K,+z^{Hvh  
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package org.rut.util.algorithm.support; ScQ9p379  
9j}Q~v\  
import org.rut.util.algorithm.SortUtil; Q=Q&\.<  
/** -Vs;4-B{9  
* @author treeroot =>&~p\Aw  
* @since 2006-2-2 K M[&WT  
* @version 1.0 A;e"_$yt8  
*/ `=kiqF2P}  
public class InsertSort implements SortUtil.Sort{ I]cZcx,<q  
l[<o t9P[  
/* (non-Javadoc) 2Ky|+s[`[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {bC(>k|CQ  
*/ fP- =wd  
public void sort(int[] data) { .Q{VY]B^  
int temp; uLfk>&hc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FuAs$;  
} i?V:+0#q\]  
} |O'gT8  
} yNG|YB;  
5 o[E8c 8  
} Zeq^dV5y77  
tVNFulcz$  
冒泡排序: ^* CKx  
p  S|  
package org.rut.util.algorithm.support; Xi~I<&  
w}M)]kY  
import org.rut.util.algorithm.SortUtil; K.}jyhKIKi  
Gs4t6+Al  
/** i&<@}:,  
* @author treeroot ] pv!Ll  
* @since 2006-2-2 ]4'V59\  
* @version 1.0 q4vHsy36  
*/ '$4&q629d  
public class BubbleSort implements SortUtil.Sort{ OLGMy5  
@Y ?p-&  
/* (non-Javadoc) 5kHU'D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VkId6k:>6C  
*/ M"Z/E>ne  
public void sort(int[] data) { g>a% gVly  
int temp; E{\T?dk1$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DweF8c  
if(data[j] SortUtil.swap(data,j,j-1); UnyJD%a  
} TXbi>t:/S{  
} C?<[oQb#  
} f'tQLF[r<  
} Z}IuR|=  
+O8}twt@  
} <d[GGkY]=  
M=1~BZQ(Z  
选择排序: E};1 H  
4KW_#d`t  
package org.rut.util.algorithm.support; >keY x<1  
']H*f2y  
import org.rut.util.algorithm.SortUtil; =`!# V/=  
\SWuylE  
/** RGBntp%  
* @author treeroot Y+EwBg)co  
* @since 2006-2-2 aCyn9Y$=  
* @version 1.0 D+h`Z]"|  
*/ PpSQf14,  
public class SelectionSort implements SortUtil.Sort { R#ya9GN{  
qg*xdefQ%  
/* xj5MKX{CJT  
* (non-Javadoc) DtZ7UX\P  
* m$g{&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =7S\-{  
*/ VT;cz6"6b4  
public void sort(int[] data) { !$Arc^7r  
int temp; N`vPt?@  
for (int i = 0; i < data.length; i++) { #-PUm0|  
int lowIndex = i; o%h[o9i  
for (int j = data.length - 1; j > i; j--) { Zj)A%WTD,  
if (data[j] < data[lowIndex]) { xoQqku"vn  
lowIndex = j; & 5'cN  
} .]; `  
} )<T2J0*  
SortUtil.swap(data,i,lowIndex); ,!98V Jmr  
} j$k/oQ  
} h|EHK!<"8  
c}2"X,  
} prGp/"E  
:|=Xh"l"  
Shell排序: ~b 9fk)z!  
]/Cu,mX  
package org.rut.util.algorithm.support; I$f'BAw  
"ZG2olOqLI  
import org.rut.util.algorithm.SortUtil; sv#/78~|  
bhCAx W  
/** D ~NWP%H  
* @author treeroot VWMr\]g  
* @since 2006-2-2 }G<A$*L1  
* @version 1.0 {<2q  
*/ c`#4}$  
public class ShellSort implements SortUtil.Sort{ l^v,X%{Iz  
/ KKA/  
/* (non-Javadoc) W\z<p P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kxsj_^&|i  
*/ LhKUZX,P8  
public void sort(int[] data) { ^K!R4Y4t  
for(int i=data.length/2;i>2;i/=2){ O9:J ^g  
for(int j=0;j insertSort(data,j,i); t=dZM}wj_\  
} n:%A4*  
} d)v!U+-|'  
insertSort(data,0,1); P1"g62R  
} ,>I_2mc  
%? z;'Y7D  
/** ~h444Hp=  
* @param data 4cAx9bqA  
* @param j BWsD~Ft  
* @param i -V}ZbXJD  
*/ uF]+i^+  
private void insertSort(int[] data, int start, int inc) { [.4D<}e  
int temp; :$oiP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lziC.Dpa  
} Y\{lQMCy  
} 7x`4P|Uu  
} 9S)A6]  
|( R[5q  
} Td![Id  
^Kh>La:>O  
快速排序: `O}bPwa{>  
8?k.4{?  
package org.rut.util.algorithm.support; A*3R@G*h  
QEl~uhc3  
import org.rut.util.algorithm.SortUtil; ]\:l><  
DT#Z6A  
/** u5dyhx7  
* @author treeroot O}"fhMk  
* @since 2006-2-2 hin6cac  
* @version 1.0 7=]Y7 "XCf  
*/ Px"K5c*  
public class QuickSort implements SortUtil.Sort{ ~uu~NTz  
{X>U`0P  
/* (non-Javadoc) 2v\-xg%1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jl,\^)DSw  
*/ w^QqYUL${  
public void sort(int[] data) { gc{5/U9H*  
quickSort(data,0,data.length-1); W[j7Vi8v  
} g3,F+  
private void quickSort(int[] data,int i,int j){ q"pnFK9/L  
int pivotIndex=(i+j)/2; Nh\y@\F>  
file://swap t8FgQ)tk  
SortUtil.swap(data,pivotIndex,j); ~b{j`T  
60Obek`  
int k=partition(data,i-1,j,data[j]); YiPp#0T[Gx  
SortUtil.swap(data,k,j); J*O$)K%Hx  
if((k-i)>1) quickSort(data,i,k-1); 1Du9N[2'P  
if((j-k)>1) quickSort(data,k+1,j); b1qli5  
jRIm_)  
} ph=[|P)  
/** ;^:$O6J7T~  
* @param data hk1jxnQ h  
* @param i _i{4 4zE  
* @param j VR0#"  
* @return quw:4W>  
*/ UQ 'U 4q  
private int partition(int[] data, int l, int r,int pivot) { pvJPMx  
do{ W'9=st'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n;Etn!4M  
SortUtil.swap(data,l,r); 7%4@*  
} L #l|}u  
while(l SortUtil.swap(data,l,r); OHha5n  
return l; D?"TcA  
} CVFsp>+  
in6iJ*E@'  
} '%"#]  
!Rw\k'<GKX  
改进后的快速排序: L&nGjC+Lr  
sIJ37;ZA  
package org.rut.util.algorithm.support; (_lc< Bj  
AFSFXPl "  
import org.rut.util.algorithm.SortUtil; )(pJ~"'L  
z[wk-a+w  
/** 4q<:% 0M|  
* @author treeroot $'Hg}|53  
* @since 2006-2-2 V-w[\u  
* @version 1.0 f V.(v&  
*/ AcF;5h  
public class ImprovedQuickSort implements SortUtil.Sort { *7I=vro  
!Jj=H()}  
private static int MAX_STACK_SIZE=4096; 'm=9&?0S  
private static int THRESHOLD=10; .W&rcqy  
/* (non-Javadoc) 9D_4]'KG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !2N#H~{  
*/ .j4IW 3)  
public void sort(int[] data) { [J+K4o8L<A  
int[] stack=new int[MAX_STACK_SIZE]; QE5 85s5  
pz^"~0o5  
int top=-1; V@K}'f~  
int pivot; +-#| M|a  
int pivotIndex,l,r; Nu{RF  
qhpq\[U6in  
stack[++top]=0; Bd"7F{H  
stack[++top]=data.length-1; ^ :Q |,oy  
' n~N*DH  
while(top>0){ h3xX26l  
int j=stack[top--]; 4#=!VK8ZH  
int i=stack[top--]; Xb3vvHdI  
eeb 8v:4  
pivotIndex=(i+j)/2; # dxlU/*  
pivot=data[pivotIndex]; g m],  
s:cS 9A8  
SortUtil.swap(data,pivotIndex,j); .?S#DS )  
sa+:c{  
file://partition rsP-?oD8)  
l=i-1; 2#1FI0,Pa*  
r=j; $X~=M_ W  
do{ =W !m`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lLtC9:  
SortUtil.swap(data,l,r); v-[|7Pg}Z  
} \{+7`4g  
while(l SortUtil.swap(data,l,r); m$hSL4 N  
SortUtil.swap(data,l,j); O,JthlAV4  
g)&-S3\  
if((l-i)>THRESHOLD){ uD:O[H-x  
stack[++top]=i; `U`Z9q5-  
stack[++top]=l-1; _I|wp<R  
} /yrR f;}<O  
if((j-l)>THRESHOLD){ a/^Yg rC\T  
stack[++top]=l+1; HNjkRl)QR  
stack[++top]=j; :@b>,{*4zS  
} GJy,)EO6{  
) _2!1  
} [TO:- 8$.  
file://new InsertSort().sort(data); ~T4 =Id  
insertSort(data); JG}U,{7(  
} cS ];?tqrA  
/** nI_Zk.R  
* @param data [V jd )%  
*/ NKd@ Kp`,  
private void insertSort(int[] data) { ={L:q8v)  
int temp; [>_( q|A6+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P<4jY?.  
} (vj2XiO^+  
} Gh{k~/B  
} p Y>yJ)  
;:$Na=  
} ^jmnE.8R  
MzG(+B  
归并排序: BxZop.zwE(  
|g'sRTKJ  
package org.rut.util.algorithm.support; %74 Ms  
\ I?;%  
import org.rut.util.algorithm.SortUtil; y6PAXvv'{  
>$Fc=~;Ba  
/** #!`zU4&2  
* @author treeroot |y:DLsom?i  
* @since 2006-2-2 /d{L]*v)]  
* @version 1.0 /p%K[)T(  
*/ |t]9RC.;7  
public class MergeSort implements SortUtil.Sort{ $&e(V6A@  
+pcj8K%  
/* (non-Javadoc) AV2q*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5r+0^UAO:J  
*/ %DV@2rC<  
public void sort(int[] data) { S|>Up%{n[  
int[] temp=new int[data.length]; %#] T.g  
mergeSort(data,temp,0,data.length-1); Qs?+vk?*h  
} s?6 7@\  
Q[b({Vj;tG  
private void mergeSort(int[] data,int[] temp,int l,int r){ h3)KT+7.  
int mid=(l+r)/2; x!$,Hcph,  
if(l==r) return ; D1j 7iv  
mergeSort(data,temp,l,mid); fF d9D=EW.  
mergeSort(data,temp,mid+1,r); j qdI=!H  
for(int i=l;i<=r;i++){ =)zq %d?i;  
temp=data; E%;'3Qykva  
} &iGl)dDr  
int i1=l; H]!y |p  
int i2=mid+1; 9nG] .@ H  
for(int cur=l;cur<=r;cur++){ $>h#|?*?  
if(i1==mid+1) %&] }P;&  
data[cur]=temp[i2++]; R_ 1C+  
else if(i2>r) | 5L1\O8#  
data[cur]=temp[i1++]; gP`!MlY@  
else if(temp[i1] data[cur]=temp[i1++]; Q./ lX:  
else %zelpBu+  
data[cur]=temp[i2++]; fgp 7 |;Y  
} qA~D*=  
} 1tr>D:c\  
SQ Fey~  
} n47=eKd70  
v]BQIE?R /  
改进后的归并排序: JyqFFZ&  
jo|q,t  
package org.rut.util.algorithm.support; aW6+Up+G*  
"aBd0i&  
import org.rut.util.algorithm.SortUtil; z67=v9+7  
w7Pe< vT  
/** x@Y2jM  
* @author treeroot ,|4Ye  
* @since 2006-2-2 wU ; f   
* @version 1.0 1IlR  
*/ O\LW 8\M  
public class ImprovedMergeSort implements SortUtil.Sort { |be r:1  
R`* *!ku  
private static final int THRESHOLD = 10; #PrV)en  
:1lE98=  
/* XF7W'^  
* (non-Javadoc) :HE]P)wz-  
* `;_tt_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~q&.,I(  
*/ KJ)nGoP>  
public void sort(int[] data) { _ <;Q=?'*  
int[] temp=new int[data.length]; {.lF~cOu  
mergeSort(data,temp,0,data.length-1);  ft'iv  
} ,SyUr/D  
#LN I&5  
private void mergeSort(int[] data, int[] temp, int l, int r) { \i,cL)HM  
int i, j, k; rq1kj 8%2  
int mid = (l + r) / 2; HEuM"2{DMM  
if (l == r) *3/7wSV:  
return; Hr+-ndH!Pq  
if ((mid - l) >= THRESHOLD) VBX# !K1Q  
mergeSort(data, temp, l, mid); r$#G%FMv  
else 46zaxcY<!  
insertSort(data, l, mid - l + 1); da2[   
if ((r - mid) > THRESHOLD) #8z,'~\  
mergeSort(data, temp, mid + 1, r); w}Upa(dU  
else =_'cG:=)  
insertSort(data, mid + 1, r - mid); 7RP_ ^Cr+  
^c\IZ5  
for (i = l; i <= mid; i++) { F3Y>hs):7  
temp = data; & .?HuK  
} ]hj1.V+  
for (j = 1; j <= r - mid; j++) { +^J-'7Vt  
temp[r - j + 1] = data[j + mid]; <]'"e]  
} @ g75T`N  
int a = temp[l]; N4To#Q1w  
int b = temp[r]; ys/mv'#>  
for (i = l, j = r, k = l; k <= r; k++) { 9 <KtI7  
if (a < b) { O$Vm#|$sq  
data[k] = temp[i++]; gFT~\3j p=  
a = temp; t%U[\\ic  
} else { |nEV Oy>'  
data[k] = temp[j--]; s\W  
b = temp[j]; M?B(<j1Ri  
} IMGqJc,7  
} ~B&*7Q7  
} pIu H*4Vz  
uit-Q5@~  
/** UNQRtR/  
* @param data X[Ek'=}  
* @param l =4e=wAO(i  
* @param i p{a]pG+3  
*/ Ys$YI{  
private void insertSort(int[] data, int start, int len) { v1C.\fL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Tq84Fn!HJ>  
} T'M66kg  
} Q==v!"Gi|  
} jAK{<7v4U  
} #tZf>zrs  
b|dCEmFt  
堆排序: O4/n!HOb  
&ZE\@Vc  
package org.rut.util.algorithm.support; ;x-H$OZX  
|2@en=EYk  
import org.rut.util.algorithm.SortUtil; v{2DBr  
tin|,jA =  
/** ;a#*|vx  
* @author treeroot *9vA+uN  
* @since 2006-2-2 ey)u7-O  
* @version 1.0 V->%)d3i  
*/ b!]0mXU  
public class HeapSort implements SortUtil.Sort{ s$Zq/l$1x  
*e<Eu>fW#&  
/* (non-Javadoc) fcICFReyV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W3/ 7BW`  
*/ 5)yOw|Bd  
public void sort(int[] data) { (kC} ,}  
MaxHeap h=new MaxHeap(); tQ~<i %;  
h.init(data); ~g1, !Wl  
for(int i=0;i h.remove(); X B*}P  
System.arraycopy(h.queue,1,data,0,data.length); m*!f%}T  
} 4C1FPrh  
k=7Gr;;l=p  
private static class MaxHeap{ C,r`I/;  
h4anr7g{  
void init(int[] data){ EF=dXm/\  
this.queue=new int[data.length+1]; 7"q+"0G  
for(int i=0;i queue[++size]=data; ~*!u  
fixUp(size); g(<T u^F  
} k\pDJ7wF^  
} Mi}I0yhVm  
rQEi/  
private int size=0; :wU_-{>>2  
*v rW A  
private int[] queue; !\0F.*   
fYhR#FVI  
public int get() { D#7_T KX  
return queue[1]; }t|Plz  
} 7%9)C[6NSs  
l>~`;W  
public void remove() { h}|6VJ@.  
SortUtil.swap(queue,1,size--); P>Q{He:  
fixDown(1); /zG +]  
} #9`rXEz  
file://fixdown wn+j39y?ZY  
private void fixDown(int k) { j/9WOIfa  
int j; \2Og>{"U  
while ((j = k << 1) <= size) { Xlv#=@;O]  
if (j < size %26amp;%26amp; queue[j] j++; A)hhnb0o  
if (queue[k]>queue[j]) file://不用交换 !7*(!as  
break; O4EIE)c  
SortUtil.swap(queue,j,k); a*Ss -y  
k = j; R zS|dGNQE  
} bar0{!Y"  
} 5g``30:o  
private void fixUp(int k) { WRD A `  
while (k > 1) { 2@ 9pr  
int j = k >> 1; W|dpFh`  
if (queue[j]>queue[k]) qO-C%p [5  
break; *bA+]&dj\  
SortUtil.swap(queue,j,k); s>|Z7[*  
k = j; 0e+W/Tq  
} >5;N64]!)  
} Y{Da+  
e&QS#k  
} /vjGjb=3U  
s=d+GMa  
} yGiP[d|tRc  
W]]q=c%2  
SortUtil: g5#CN:%f  
\=!H2M  
package org.rut.util.algorithm; 5`{vE4A]q  
)O3jQ_q=  
import org.rut.util.algorithm.support.BubbleSort; QjA&IZEC  
import org.rut.util.algorithm.support.HeapSort; -Z%F mv8  
import org.rut.util.algorithm.support.ImprovedMergeSort; u7;`4P:o@  
import org.rut.util.algorithm.support.ImprovedQuickSort; 99e*]')A%  
import org.rut.util.algorithm.support.InsertSort; XFW5AP  
import org.rut.util.algorithm.support.MergeSort; w[(n>  
import org.rut.util.algorithm.support.QuickSort; {-@~Q.&}v  
import org.rut.util.algorithm.support.SelectionSort; NZLXN  
import org.rut.util.algorithm.support.ShellSort; Ly9Q}dL  
3Y z]8`C  
/** 5W+{U8\  
* @author treeroot +UxI{,L  
* @since 2006-2-2 {A|bBg1!  
* @version 1.0 =fl%8"%N&  
*/  SLkuT`*  
public class SortUtil { sV u k  
public final static int INSERT = 1; .H8mRvd?  
public final static int BUBBLE = 2; %}C9  
public final static int SELECTION = 3; &1wpGJqm  
public final static int SHELL = 4; qZaO&"q  
public final static int QUICK = 5; mD7}t  
public final static int IMPROVED_QUICK = 6; *z0K%@M  
public final static int MERGE = 7; D(Qa>B"1  
public final static int IMPROVED_MERGE = 8; W57&\PXYn  
public final static int HEAP = 9; kMy<G8 s  
nv"G;W  
public static void sort(int[] data) { p8=|5.  
sort(data, IMPROVED_QUICK); Qyz>ZPu}sz  
} u4YM^* S.  
private static String[] name={ &Yp+k}XU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xo Y7/&&  
}; R<_?W#$j  
6xHi\L  
private static Sort[] impl=new Sort[]{ \c{R <Hh  
new InsertSort(),  ="\*h(  
new BubbleSort(), W;q+,Io  
new SelectionSort(), Q',m{;;  
new ShellSort(), !.EcP=S  
new QuickSort(), )1f+ld%R  
new ImprovedQuickSort(), o/cr{>"N  
new MergeSort(), nq' M?c#E  
new ImprovedMergeSort(), R:A'&;S  
new HeapSort() I!0JG`&  
}; HA!t$[_Ve  
0Uw ^FcW  
public static String toString(int algorithm){ WSLy}@`Vx  
return name[algorithm-1]; :uo[&&c  
} EKuSnlTXba  
 \~>e_;  
public static void sort(int[] data, int algorithm) { ExCM<$,  
impl[algorithm-1].sort(data); WL l_'2h  
} T~X41d\  
q#N R32byF  
public static interface Sort { aG! *WHt  
public void sort(int[] data); Ky kSFB  
} xc;DdK=1X  
M)JADX  
public static void swap(int[] data, int i, int j) { ,=|4:F9  
int temp = data; ` W4dx&  
data = data[j]; rjUBLY1(  
data[j] = temp; V^n0GJNo  
} JrDHRIkgm  
} QU/fT_ORw  
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