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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。 7zM:z,  
插入排序: (eN7s_  
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package org.rut.util.algorithm.support; {7NGfzwp;6  
wcGK *sWG-  
import org.rut.util.algorithm.SortUtil; S#/%#k103  
/** *pKTJP  
* @author treeroot }47h0 i  
* @since 2006-2-2 ++0)KSvw  
* @version 1.0 d ]P~  
*/ &k }f"TX2  
public class InsertSort implements SortUtil.Sort{ "s+4!,k  
r"7n2   
/* (non-Javadoc) 4DA34m(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~^m Uu`@r  
*/ [{x}# oRSE  
public void sort(int[] data) { ,erw(7}'.  
int temp; %ByPwu:f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]?Ef0?44  
} &gXh:.  
} 4QL>LK  
} '%NglC[J  
K+B978XD  
} %Sr+D{B  
x$Dq0FX!%_  
冒泡排序: ;a:H-iC  
u^80NR  
package org.rut.util.algorithm.support; tdy2ZPVtTV  
mDB  
import org.rut.util.algorithm.SortUtil; ^Co-!jM  
Zi!Ta"}8  
/** r* *zjv>  
* @author treeroot M([#Py9h  
* @since 2006-2-2 o96C^y{~S  
* @version 1.0 xs$$fPAQ  
*/ n<I{x^!  
public class BubbleSort implements SortUtil.Sort{ rwm^{Qa  
IPiV_c-l  
/* (non-Javadoc) cnv>&6a)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZO0 Ee1/  
*/ :GHv3hn5  
public void sort(int[] data) { \o9 \i kR  
int temp; )9QtnM  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \;LDE`Q_x  
if(data[j] SortUtil.swap(data,j,j-1); 7>vm?a^D2&  
} #&Sr;hAJ  
} *XVwTW[a  
} A4K.,bZ   
} {$*N1$(%  
|c_qq Bd  
} jc} G+|`  
!vnQ;g5  
选择排序: vF$i"^;tJ;  
2-&EkF4p'  
package org.rut.util.algorithm.support; 7s9h:/Lu  
wj|Zn+{"nF  
import org.rut.util.algorithm.SortUtil; Vz{+3vfra6  
]Bw0Qq F#  
/** sDY~jP[Oa  
* @author treeroot :6^7l/p  
* @since 2006-2-2 ?$r`T]>`2  
* @version 1.0 0XHQ 5+"8  
*/ PNU(;&2<  
public class SelectionSort implements SortUtil.Sort { E-e(K8R  
U84W(X  
/* =YO ]m<  
* (non-Javadoc) 5j%G7.S\  
* jmok]-pC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f8 d 3ZK  
*/ AOf4y&B>q  
public void sort(int[] data) { jG5HW*>k0  
int temp; nB[-KS  
for (int i = 0; i < data.length; i++) { ~(5r+Z}*`  
int lowIndex = i; [}RoZB&I  
for (int j = data.length - 1; j > i; j--) { G dgL}"*F  
if (data[j] < data[lowIndex]) { 6_LeP9s )  
lowIndex = j; 2Xb, i  
} 6% D9;-N)  
} )G? qX.D  
SortUtil.swap(data,i,lowIndex); ^)VwxH:s  
} :|7#D,2  
} aQk&#OQy  
|@qw  
} &4#Zi.]  
[,%=\%5  
Shell排序: l6viP}R  
2h E(h  
package org.rut.util.algorithm.support; Ia&R/I  
1I +9?fa  
import org.rut.util.algorithm.SortUtil; 2|1fb-AR  
&hCbXs=  
/** azcPeAe  
* @author treeroot <N<Q9}`V  
* @since 2006-2-2 +Y\:Q<eMFg  
* @version 1.0 I7f ^2  
*/ f)I5=Ijy(  
public class ShellSort implements SortUtil.Sort{ tF2"IP.  
J 3!~e+wn  
/* (non-Javadoc) H'+7z-% G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N^^0j,  
*/ :5d>^6eoB?  
public void sort(int[] data) { S{Y zHK  
for(int i=data.length/2;i>2;i/=2){ u8e_Lqx?  
for(int j=0;j insertSort(data,j,i); OWd'z1Yl  
} v gN!9  
} K*6"c.D  
insertSort(data,0,1); p!.~hw9  
} ~%{2Z_t$  
PnsBDf%v  
/** XtF m5\U  
* @param data GK?ual1  
* @param j HpwMm^  
* @param i 74s{b]jN'-  
*/ |<%!9Z  
private void insertSort(int[] data, int start, int inc) { KKeMi@N  
int temp; {]vD@)k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >1y6DC  
} ?ukw6T  
} 1Pf(.&/9_  
} ]@q%dsz  
en<mm#Ab  
} Lu.zc='\  
t=_^$M,yr  
快速排序: Qm%F]nyy  
f| RmAP;X,  
package org.rut.util.algorithm.support; yMs!6c*  
_03?XUKV  
import org.rut.util.algorithm.SortUtil; :t?B)  
_Hb;)9y  
/** V35Vi6*p  
* @author treeroot |dRVSVN  
* @since 2006-2-2 3"fDFR  
* @version 1.0  Et>#&Nw8  
*/ qT O6I5u  
public class QuickSort implements SortUtil.Sort{ Z\0Rw>#  
xm'9n?  
/* (non-Javadoc) @sXFu[!U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _vQ52H,  
*/ XTol|a=  
public void sort(int[] data) { UK`A:N2[  
quickSort(data,0,data.length-1); L"_X W no  
} J0G@]H  
private void quickSort(int[] data,int i,int j){ ">uN={Iy  
int pivotIndex=(i+j)/2; z^Q'GBoBA  
file://swap [K{{P|(q  
SortUtil.swap(data,pivotIndex,j); $-4](br|  
De$AJl  
int k=partition(data,i-1,j,data[j]); "W<Y1$Y=Y  
SortUtil.swap(data,k,j); 'uPAG;)m  
if((k-i)>1) quickSort(data,i,k-1); P5S ]h  
if((j-k)>1) quickSort(data,k+1,j); '3.\+^3  
$:ush"=f8^  
} s.3"2waZ=T  
/** 3G} )$y3m  
* @param data P8 X07IK  
* @param i b|#=kPVgL}  
* @param j A^U84kV=  
* @return 'C+cQLig@  
*/ pP<8zTLn  
private int partition(int[] data, int l, int r,int pivot) { c{#2;k Q,  
do{ /qpSmRL  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ldv@C6+J  
SortUtil.swap(data,l,r);  MlO OB  
} -Cf)`/  
while(l SortUtil.swap(data,l,r); }$6L]   
return l; oOFTQB_6  
} ]8$8QQc<<5  
ttP7-y  
} gt kV=V  
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改进后的快速排序: ^'UM@dd?!  
N['DqS =  
package org.rut.util.algorithm.support; 43=v2P0=Tj  
!pU$'1D  
import org.rut.util.algorithm.SortUtil; fI.|QD*$b  
Y2|i>5/|<  
/** 9#8vPjXW}.  
* @author treeroot )>a~%~:  
* @since 2006-2-2 RQ+,7Ir  
* @version 1.0 !V|{(>+<  
*/ (m]l -Re  
public class ImprovedQuickSort implements SortUtil.Sort { 8PI%Z6  
d)%WaM%V  
private static int MAX_STACK_SIZE=4096; ~id6^#&>  
private static int THRESHOLD=10; 4,RPidv%O  
/* (non-Javadoc) E^8|xT'h6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xd Z$|{,  
*/ Z)!8a$M~  
public void sort(int[] data) { wMa8HeBE\  
int[] stack=new int[MAX_STACK_SIZE]; %ms%0%  
U-|]A\`)I  
int top=-1; +Z`=iia>  
int pivot; hgU;7R,?ir  
int pivotIndex,l,r; ]jT}]9Q$  
6<&~ R 3dQ  
stack[++top]=0; c3]t"TA,  
stack[++top]=data.length-1; 0R x#Fm  
 ?kjQ_K  
while(top>0){ g 9,"u_  
int j=stack[top--]; F^,:p.ihm<  
int i=stack[top--]; $]7f1U_e  
Mj0 ,Y#=76  
pivotIndex=(i+j)/2; ZmK=8iN9J  
pivot=data[pivotIndex]; tE*BZXBlm  
||+~8z#+,  
SortUtil.swap(data,pivotIndex,j); 2mLZ4 r>WE  
8SRR)O[)}  
file://partition n 0!8)Sth  
l=i-1; 5es t  
r=j; W"\~O"a  
do{ 5xH=w:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "*vrrY  
SortUtil.swap(data,l,r); 6w.E Sm  
} {Jn0G;  
while(l SortUtil.swap(data,l,r); wt($trJ  
SortUtil.swap(data,l,j); ==Gc%  
4uF.kz-cg  
if((l-i)>THRESHOLD){ --h\tj\U  
stack[++top]=i; ^ h=QpH  
stack[++top]=l-1; 2D 4,#X  
} ch i=]*9  
if((j-l)>THRESHOLD){ 9QQ XB-  
stack[++top]=l+1; Xv1vq -cM  
stack[++top]=j; ,dC.|P' `  
} x $uhkP  
7_~ A*LM  
} d$IROZK-D  
file://new InsertSort().sort(data); b]u$!W  
insertSort(data); Xhe& "rM  
} Emlj,c<?j  
/** v l"8Oi*r^  
* @param data GRZz@bAO?$  
*/ \`Hp/D1  
private void insertSort(int[] data) { sn"((BsO<  
int temp; Ny^ 1#R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !73y(Y%TE  
} c5]Xqq,  
} *-0s ` rC  
} 9 qx4F<   
}`R,C~-|^  
} uq5?t  
U>tR:)  
归并排序: $;v! ,>  
?(ORk|)kU  
package org.rut.util.algorithm.support; w8lrpbLh  
zx@!8Z  
import org.rut.util.algorithm.SortUtil; ly[yn{  
r]9-~1T  
/** }M4dze  
* @author treeroot vF\>;pcT  
* @since 2006-2-2 O_QDjxj^rZ  
* @version 1.0  : (UK'i  
*/ tN#C.M7.'7  
public class MergeSort implements SortUtil.Sort{ C?qRZB+W#  
xG!~TQ  
/* (non-Javadoc) ^ `LqNG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P2n8HFi  
*/ cSL6V2F  
public void sort(int[] data) { *\ii +f-  
int[] temp=new int[data.length]; I`_2Q:r  
mergeSort(data,temp,0,data.length-1); Snr(<u  
} l";Yw]:^  
f' A$':Y  
private void mergeSort(int[] data,int[] temp,int l,int r){ fHiL%]z  
int mid=(l+r)/2; ElO|6kOBYG  
if(l==r) return ; ^4=#, K  
mergeSort(data,temp,l,mid); rK gl:s j+  
mergeSort(data,temp,mid+1,r); [O3:?BNY  
for(int i=l;i<=r;i++){ 9NTNulD>P  
temp=data; 8LV6E5Q  
} /2Izj/Q  
int i1=l; ?LMQz=  
int i2=mid+1; y._'o7%  
for(int cur=l;cur<=r;cur++){ dD,}i$  
if(i1==mid+1) UL[,A+X8D  
data[cur]=temp[i2++]; j]Gn\QF  
else if(i2>r) !Z_+H<fi+I  
data[cur]=temp[i1++]; e!6yxL*[@[  
else if(temp[i1] data[cur]=temp[i1++]; ebA95v`Vms  
else $+j1^  
data[cur]=temp[i2++];  X}(s(6  
} ,Zmjw@ w  
} )N 3^r>(e<  
XG|N$~N+2  
} $;5Q mKQ'  
tW/k  
改进后的归并排序: EE 9w^.3a  
V$ZclV2:Ih  
package org.rut.util.algorithm.support; N.*)-O  
>XtfT'  
import org.rut.util.algorithm.SortUtil; 5 `1  
B[8bkFS>]  
/** ^J]&($-  
* @author treeroot Q`F1t  
* @since 2006-2-2 \2@J^O1,  
* @version 1.0 oC`F1!SfOO  
*/ >YI Vi4''  
public class ImprovedMergeSort implements SortUtil.Sort { !E$$ FvL  
(MLcA\LJ  
private static final int THRESHOLD = 10; 6Vnq|;W3Zv  
[ar0{MPYd  
/* 44KoOY_  
* (non-Javadoc) 4jXo5SkEJ  
* & /8Tth86  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40?RiwwD  
*/ 0+SDFh  
public void sort(int[] data) { tWn dAM(U7  
int[] temp=new int[data.length]; a&>NuMDI  
mergeSort(data,temp,0,data.length-1); +q&Hj|;8r  
} SnE^\I^O  
??F* Z" x  
private void mergeSort(int[] data, int[] temp, int l, int r) { xhP~]akHN7  
int i, j, k; ZiUb+;JA  
int mid = (l + r) / 2; R;DU68R  
if (l == r) vRe{B7}p;  
return; F! =l r  
if ((mid - l) >= THRESHOLD) lpG%rN!  
mergeSort(data, temp, l, mid); ^/BGOBK  
else k6CXuU  
insertSort(data, l, mid - l + 1); ;VE y{%nF  
if ((r - mid) > THRESHOLD) m* m),mZ"  
mergeSort(data, temp, mid + 1, r); -,bnj^L  
else uw\@~ ,d  
insertSort(data, mid + 1, r - mid); #gbB// <  
xr'1CP  
for (i = l; i <= mid; i++) {  +vkmS  
temp = data; l!*_[r   
} +gd5&  
for (j = 1; j <= r - mid; j++) { t"$~o:U&)  
temp[r - j + 1] = data[j + mid]; 3en 9TB  
} mG S4W;  
int a = temp[l]; z>W:+W"o  
int b = temp[r]; %>FtA)  
for (i = l, j = r, k = l; k <= r; k++) { >._d2.Q'  
if (a < b) { Uxjc&o  
data[k] = temp[i++]; -leX|U}k  
a = temp; Q]9$dr=Kk0  
} else { r *K  
data[k] = temp[j--]; ! JA;0[;l=  
b = temp[j]; )R7Sh51P  
} zamMlmls^  
} h'"m,(a   
} Na91K4r#  
.I:rb~ &  
/** >[ B.y  
* @param data s#Dj>Fej  
* @param l {<yapBMw  
* @param i ZR!8hw8  
*/ ) lUS'I  
private void insertSort(int[] data, int start, int len) { ^Wld6:L{I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tLu&3<%  
} E7$&:xqx  
} [[|#}D:L  
} (~DW_+?]'  
} 9w-\K]  
*s4|'KS2o  
堆排序: [Vs\r&qL  
,)`_?^ \$f  
package org.rut.util.algorithm.support; %}@iz(*}>  
i >3`V6  
import org.rut.util.algorithm.SortUtil; ?W'z5'|  
`O6#-<>  
/** F;Q,cg M  
* @author treeroot s!(R  
* @since 2006-2-2 L3{(B u  
* @version 1.0 -+E.I*st  
*/ n%3!)/$  
public class HeapSort implements SortUtil.Sort{ 7i($/mNl  
_*~F1% d  
/* (non-Javadoc) G!j9D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r~,y3L6ic  
*/ /V,xSK9.&  
public void sort(int[] data) { _=$~l^Y[  
MaxHeap h=new MaxHeap(); ,1ev2T  
h.init(data); .RpJZ[E  
for(int i=0;i h.remove(); Xmr}$<<=  
System.arraycopy(h.queue,1,data,0,data.length); MT/jpx  
} {]>c3=~FQb  
[S'1OR$FQ\  
private static class MaxHeap{ r<0E[ ~  
*duG/?>P  
void init(int[] data){ dBI-y6R  
this.queue=new int[data.length+1]; TKnWhB/J  
for(int i=0;i queue[++size]=data; LtRRX@qJw  
fixUp(size); m%L!eR  
} /MtmO$ .  
} [~N;d9H+*1  
<);q,|eh2  
private int size=0; q=t!COS  
-jJhiaJ$<  
private int[] queue; CA#g(SiZ  
^{"i eVn  
public int get() { eJoM4v  
return queue[1]; p -$C*0{  
} z)T-<zWO;  
qy|bOl  
public void remove() { {\5(aQ)Vi5  
SortUtil.swap(queue,1,size--); [ K?  
fixDown(1); StJb-K/_cL  
} -`' |z+V  
file://fixdown 8;gi8Y  
private void fixDown(int k) { [r`KoHwdm  
int j; ; $rQ  
while ((j = k << 1) <= size) { 4r$#-  
if (j < size %26amp;%26amp; queue[j] j++; xVPSL#>  
if (queue[k]>queue[j]) file://不用交换 w>2lG3H<  
break; ]y {tMC  
SortUtil.swap(queue,j,k); :la i0> D  
k = j; pwN2Nzski  
} 'bx}[  
} })O S2F  
private void fixUp(int k) { x/<ow4C  
while (k > 1) { *fm?"0M5  
int j = k >> 1; Qm[((6}  
if (queue[j]>queue[k]) i$y=tJehi  
break; bkJ bnW=  
SortUtil.swap(queue,j,k); .6gx|V+  
k = j;  ,t 2CQ  
} -o+t&m  
} P' VHga  
)>M L7y  
} &m--}  
A}Iyl   
} 7=fM}sk  
"\*)KH`C  
SortUtil: hp)>Nzdx  
}#1.$a  
package org.rut.util.algorithm;  Z`*V9  
$+PioSq  
import org.rut.util.algorithm.support.BubbleSort; XtO..{qU  
import org.rut.util.algorithm.support.HeapSort; ftY&Q#[  
import org.rut.util.algorithm.support.ImprovedMergeSort; }!^h2)'7  
import org.rut.util.algorithm.support.ImprovedQuickSort; `:lcN0n  
import org.rut.util.algorithm.support.InsertSort; +(Y\w^@%H  
import org.rut.util.algorithm.support.MergeSort; mywx V  
import org.rut.util.algorithm.support.QuickSort; k$v 7@|Aw  
import org.rut.util.algorithm.support.SelectionSort; Qb@j8Xa4[  
import org.rut.util.algorithm.support.ShellSort; 2- L-=0  
#:" ]-u^  
/** #w L(<nE  
* @author treeroot I0Do%  
* @since 2006-2-2 _j+,'\B  
* @version 1.0 *{?2M6Z  
*/ N d>zq  
public class SortUtil { s>;"bzzq  
public final static int INSERT = 1; v Z10Rb8  
public final static int BUBBLE = 2; Fe[6Y<x+:  
public final static int SELECTION = 3; !&OdbRHM  
public final static int SHELL = 4; Y<;C>Rs  
public final static int QUICK = 5; wp:$Tqa$  
public final static int IMPROVED_QUICK = 6; X)SUFhP\  
public final static int MERGE = 7; c+{XP&g8_J  
public final static int IMPROVED_MERGE = 8; ub 2'|CYw  
public final static int HEAP = 9; m@nGXl'!  
UP-2{zb |?  
public static void sort(int[] data) { > X  AB#  
sort(data, IMPROVED_QUICK); =x w:@(]{  
} f]1 $`  
private static String[] name={ o,k#ft<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ty b_'|?rW  
}; T\wOGaCW  
x75;-q  
private static Sort[] impl=new Sort[]{ 3=]/+{B  
new InsertSort(), TPb&";4ROf  
new BubbleSort(), a?Om;-i2`S  
new SelectionSort(), JK)|a@BtOT  
new ShellSort(), W{IP}mM  
new QuickSort(), [ 2@Lc3<  
new ImprovedQuickSort(), E2 'Al6^C  
new MergeSort(), Ew}GPJ  
new ImprovedMergeSort(), 6AD&%v  
new HeapSort() VFV8ik)  
}; w 8o?wx*  
sUF5Y q:9  
public static String toString(int algorithm){ VII`qbxT  
return name[algorithm-1]; P9\y~W  
}  qjfv9sU  
^ &KH|qRrO  
public static void sort(int[] data, int algorithm) { R7Tl 1!,h  
impl[algorithm-1].sort(data); fo}@B &=4  
} JBQ>"X^  
5YZ\@<|rH  
public static interface Sort { @W+8z#xr'  
public void sort(int[] data); ,,XHw;{  
} w;VUP@Wm  
m";8 nm  
public static void swap(int[] data, int i, int j) { ~l+~MB  
int temp = data; 0T3r#zQ  
data = data[j]; qyyLU@hd  
data[j] = temp; i_6wD  
} 8Pom^QopK  
} (`n*d3  
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