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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。 Oi+9kk e  
插入排序: VEj-%"\   
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package org.rut.util.algorithm.support; e%Rg,dX  
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import org.rut.util.algorithm.SortUtil; __dSEOGoe  
/** ?Imq4I~)  
* @author treeroot v0+mh]  
* @since 2006-2-2 ,l+lokD-#  
* @version 1.0 ve|ig]$5g<  
*/ `!V=~"ve  
public class InsertSort implements SortUtil.Sort{ J$Uj@M  
mwU|Hh)N]  
/* (non-Javadoc) (v+nn1,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 Yj qN  
*/ %#kml{I   
public void sort(int[] data) { %Bn"/0,  
int temp; (1Q G]1q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =BW;n]ls  
} $o2H#"  
} 6b`3AAGU"  
} X` r~cc  
| >X5@  
} A/:^l%y,GZ  
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冒泡排序: ^Y[.-MJt+  
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package org.rut.util.algorithm.support; !6.}{6b  
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import org.rut.util.algorithm.SortUtil; ;7=pNK  
*L7&P46  
/** onqfmQ,3E  
* @author treeroot .{r0Szm.  
* @since 2006-2-2  }^3CG9%  
* @version 1.0 ^k{b8-)W<  
*/ r Z)?uqa  
public class BubbleSort implements SortUtil.Sort{ \zOo[/-<  
OynQlQD/Eu  
/* (non-Javadoc) ( $s%5|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L{PH8Xl_  
*/ IP<]a5  
public void sort(int[] data) { dA4DW  
int temp; p6P .I8g  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Dfz3\|LJ  
if(data[j] SortUtil.swap(data,j,j-1); /<zBjvr%%  
} eI99itDQ  
} EH1GdlhA  
} iR(=< >  
} rx[l7F q  
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} wN}@%D-[v  
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选择排序: }[2  
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package org.rut.util.algorithm.support; LKC^Y) 6o  
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import org.rut.util.algorithm.SortUtil; q%&JAX=  
' tyblj C  
/** pb8sx1.j;  
* @author treeroot 9feVy\u  
* @since 2006-2-2 q)N]*~  
* @version 1.0 ~| CWy  
*/ KAkD" (!  
public class SelectionSort implements SortUtil.Sort { =Pj+^+UM  
ou V%*<Ki  
/* B=!&rKF  
* (non-Javadoc) <?8 aM7W7  
* IZ2(F,{o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YL[n85l>1  
*/ %mF:nU4  
public void sort(int[] data) { *.F^`]yz  
int temp; 41^=z[k  
for (int i = 0; i < data.length; i++) { XWd;-%`<  
int lowIndex = i; {~*^jS']5  
for (int j = data.length - 1; j > i; j--) { I j w{g%  
if (data[j] < data[lowIndex]) { VA D9mS^~  
lowIndex = j; |!Ryl}Oi  
} A  [c1E[  
} =5l20 Um  
SortUtil.swap(data,i,lowIndex); M_BG :P5  
} O %m\ Q1  
} "39\@Ow  
AT{rg/oSf  
} MJ.K,e  
nXRT%[o&  
Shell排序: Wxeg(L}E  
c;6[lv  
package org.rut.util.algorithm.support; arWP]%E0W  
s^\ *jZ6  
import org.rut.util.algorithm.SortUtil; bfV&z+Rv-5  
E&z`BPd  
/** Vf*Z}'  
* @author treeroot @yImR+^.7  
* @since 2006-2-2 S&JsDPzSd  
* @version 1.0 ! )x2   
*/ WgTD O3  
public class ShellSort implements SortUtil.Sort{ od=x?uBVd  
dilom#2l  
/* (non-Javadoc) r `;_ #&b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a]S0|\BkN  
*/ 9'" F7>d  
public void sort(int[] data) { K`vc&uf  
for(int i=data.length/2;i>2;i/=2){ ?zP/i(1y  
for(int j=0;j insertSort(data,j,i); xCTPsw]s  
} -xVp}RLT  
} -Z(='A  
insertSort(data,0,1); j0wpaIp  
} |d)*,O4s  
:HiAjaA1pg  
/** 9\ulS2d  
* @param data d!P3<:+R[  
* @param j 7ciSIJ  
* @param i iZ( U]  
*/  Gv(?u  
private void insertSort(int[] data, int start, int inc) { |O';$a1S  
int temp; >.=v*\P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sF4+(9=  
} U0J_ 3W  
} ^Ay>%`hf*  
} d8C44q+ds  
^!v{ >3  
} ZZ*+Tl\ s  
Q1[3C(  
快速排序: b0| ;v-v  
ASU.VY  
package org.rut.util.algorithm.support; BB9+d"Sq  
ud grZ/w]  
import org.rut.util.algorithm.SortUtil; p!Xn iY  
QWQJSz5  
/** YZdV0 -S  
* @author treeroot (~IoRhp^  
* @since 2006-2-2 ,L&d\M"f  
* @version 1.0 $o%:ST4  
*/ CK=TD`$w  
public class QuickSort implements SortUtil.Sort{ UKpc3Jo:~  
.+ d.~jHX  
/* (non-Javadoc) 'c/S$_r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k}&7!G@T  
*/ fMm.V=/+  
public void sort(int[] data) { =pk5'hBAi  
quickSort(data,0,data.length-1); <zWMTVaC  
} W/@-i|v  
private void quickSort(int[] data,int i,int j){ Kt5k_9  
int pivotIndex=(i+j)/2; f`vu+nw  
file://swap /$'|`jKsB  
SortUtil.swap(data,pivotIndex,j); M 8NWQ^Y  
4.e0k<]N`  
int k=partition(data,i-1,j,data[j]); `i5\(cdl  
SortUtil.swap(data,k,j); MLT ^7'y  
if((k-i)>1) quickSort(data,i,k-1); ss0`9:z  
if((j-k)>1) quickSort(data,k+1,j); X#Sgf|$  
0&$,?CL?  
} I83 _x|$FZ  
/** 5< $8.a#  
* @param data r oM!%hb  
* @param i 93VbB[w~7F  
* @param j `8lS)R!  
* @return w.o>G2u  
*/ K6EG"Vv!  
private int partition(int[] data, int l, int r,int pivot) { @#QaaR;4  
do{ `e[>S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7R7e3p,K  
SortUtil.swap(data,l,r); 6>NK2} `  
} :*I=' M9B  
while(l SortUtil.swap(data,l,r); q@&6&cd  
return l; H8!)zZ  
} 5"9 '=LV~  
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} KXf (v4  
N8KH.P+  
改进后的快速排序: 5ktFL<^5T  
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package org.rut.util.algorithm.support; b*)F7{/Z  
7h#*dj ef  
import org.rut.util.algorithm.SortUtil; tjg?zlj  
XGb*LY+Db6  
/** x8!uI)#tS  
* @author treeroot lj /IN[U/  
* @since 2006-2-2 QAzwNXE+  
* @version 1.0 D k<NlH zp  
*/ c5(4rT{(m  
public class ImprovedQuickSort implements SortUtil.Sort {  rrP_7D  
'm^]X3y*  
private static int MAX_STACK_SIZE=4096; hS'!JAM>Q  
private static int THRESHOLD=10; pEp$J;   
/* (non-Javadoc) 0.kC|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *X /i<  
*/ G{74o8  
public void sort(int[] data) { . e_VPKF|  
int[] stack=new int[MAX_STACK_SIZE]; s4`,Z*H  
@]YEOk-  
int top=-1; kB9@ &t +  
int pivot; 43,baeG  
int pivotIndex,l,r; ] ^53Qbrv  
tGJJ|mle>  
stack[++top]=0; |OiM(E(  
stack[++top]=data.length-1; / ?'FSWDU  
BG8`B'i  
while(top>0){ &3$FkU^F6  
int j=stack[top--]; |Ae7wXOs  
int i=stack[top--]; m.68ctaa  
8ly6CP+^B  
pivotIndex=(i+j)/2; ;(@' +"  
pivot=data[pivotIndex]; az[#q  
oU|_(p"e|  
SortUtil.swap(data,pivotIndex,j); c'D NO~H  
Vg(FF "  
file://partition 9qk J<  
l=i-1; g(C/J9J  
r=j; "*LQr~k~}  
do{ y!c<P,Lt3f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '#a;n  
SortUtil.swap(data,l,r); &$heW,  
} [jR >.H'  
while(l SortUtil.swap(data,l,r); 0Ibe~!EiQJ  
SortUtil.swap(data,l,j); q"i]&dMr  
VCzb[.  
if((l-i)>THRESHOLD){ G 2`hEX%  
stack[++top]=i; .@0@Y  
stack[++top]=l-1; 9-Z ?  
} 7Ue&y8Yf  
if((j-l)>THRESHOLD){ w7c0jIf{  
stack[++top]=l+1; XS$#\UQ  
stack[++top]=j; :_|Xr'n`A  
} ojyP.R  
d&lT/S  
} S$=caZ?  
file://new InsertSort().sort(data); J1w,;T\55  
insertSort(data); seVT| z  
} 5<M$ XT  
/** +;,X?E]g  
* @param data %\L{Ud%7  
*/ 5+2qx)FZ  
private void insertSort(int[] data) { :F_>`{  
int temp; '~VF*i^4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rZ&li/Z  
} WRrg5&._q  
}  z31g"  
} nRyx2\Py+  
yeam-8  
} ,Jx.Kj.,  
Pk;1q?tGw  
归并排序: w"O{@2B3:H  
F:sUGM,  
package org.rut.util.algorithm.support; {e5-  
Jn%Etz-  
import org.rut.util.algorithm.SortUtil; e8M0Lz#}  
DVt^O [  
/** D`fIw` _  
* @author treeroot D!8v$(#hR  
* @since 2006-2-2 TK0WfWch  
* @version 1.0 >)HKruSW.  
*/ 'nS>'yYH#  
public class MergeSort implements SortUtil.Sort{ T 0qM "  
N8DouDq  
/* (non-Javadoc) d@tf+_Ih  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  A"1%E.1  
*/ }~p%e2<  
public void sort(int[] data) { _gEojuaN  
int[] temp=new int[data.length]; _U9.u#>sV  
mergeSort(data,temp,0,data.length-1); Z_a@,k:+[  
} 5j v*C]z  
%f?Zg44  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4aKppj  
int mid=(l+r)/2; F2{SC?U  
if(l==r) return ; hu >wcOt  
mergeSort(data,temp,l,mid); #ro$$I;  
mergeSort(data,temp,mid+1,r); 4];>O  
for(int i=l;i<=r;i++){ lavy?tFer  
temp=data; $1FnjL5u  
} BC5R$W. e  
int i1=l; OdO n wY  
int i2=mid+1; /([a%,DI  
for(int cur=l;cur<=r;cur++){ v4K! BW  
if(i1==mid+1) WM%w_,Z  
data[cur]=temp[i2++]; mi1^hl'2  
else if(i2>r) $KhD>4^ jL  
data[cur]=temp[i1++]; [E+J=L.l  
else if(temp[i1] data[cur]=temp[i1++]; &- !$qUli  
else ,M:[GuXD<  
data[cur]=temp[i2++]; NV==[$(r  
} Uw| -d[!  
} b|*+!v:I>T  
aPRMpY-YC3  
} i/Nc)kKL  
KE~.f(  
改进后的归并排序: D2J)qCK1)  
C ^c <s  
package org.rut.util.algorithm.support; RR|X4h0.  
VrWQ]L  
import org.rut.util.algorithm.SortUtil; QpA$='  
=A~5?J=  
/** 8kC$Z)  
* @author treeroot _~ 'MQ`P  
* @since 2006-2-2 H?FiZy*[Y  
* @version 1.0 n]7rHV}G  
*/ DMTc{  
public class ImprovedMergeSort implements SortUtil.Sort { =$%-RX7  
v V;]?  
private static final int THRESHOLD = 10;  ^6b5}{>  
-d thY(8  
/* h6bvUI+|h  
* (non-Javadoc) "a(e2H2&T4  
* eCWF0a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F+?i{$  
*/ XfflD9M  
public void sort(int[] data) { &g>M Z" Z|  
int[] temp=new int[data.length]; cP4C<UG  
mergeSort(data,temp,0,data.length-1); m 2/S(f  
} Udf\;G@  
Efoy]6P\  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0d+b<J,  
int i, j, k; 4.Fh4Y:$'  
int mid = (l + r) / 2; /sn }Q-Zy2  
if (l == r) mY[*Cj3WJ  
return; atW^^4 :  
if ((mid - l) >= THRESHOLD) t~)4f.F:  
mergeSort(data, temp, l, mid); df {\O* 6  
else Ujqnl>l  
insertSort(data, l, mid - l + 1); /Dyig  
if ((r - mid) > THRESHOLD) \Ui8gDJ8y5  
mergeSort(data, temp, mid + 1, r); )T?BO  
else OH@gwC  
insertSort(data, mid + 1, r - mid); 2Nx:Y+[  
9P,[MZ  
for (i = l; i <= mid; i++) { _zzT[}  
temp = data; 6`%|-o :  
} 2Dt^W.!  
for (j = 1; j <= r - mid; j++) { N"tX K  
temp[r - j + 1] = data[j + mid];  DZ4gp  
} 9Y2.ob!$}  
int a = temp[l]; D=Nt 0y  
int b = temp[r]; .mg0L\  
for (i = l, j = r, k = l; k <= r; k++) { P)XR9&o':  
if (a < b) { S4c-i2Rq  
data[k] = temp[i++]; i3KAJ@  
a = temp; U#- 5",X|  
} else { S6\E  I5S  
data[k] = temp[j--]; $=#Lf[|f=  
b = temp[j]; m-a':  
} 1f 1D^|  
} IwS<p -  
} h?h)i>  
q&O9W?E8dG  
/** !)CY\c4}d>  
* @param data f3^qO9R  
* @param l U>00B|<GJ  
* @param i kGC*\?<LmR  
*/ ^CM@VmPp  
private void insertSort(int[] data, int start, int len) { M,yxPHlN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pAq PHD=  
} O*lIZ,!n  
} b6H7>x  
} ?R4u>AHS@  
} ,\1Rf.  
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堆排序: '66nqJb*  
QFN9j  
package org.rut.util.algorithm.support; Cs,Cb2[  
 _VM}]A  
import org.rut.util.algorithm.SortUtil; ;49sou  
h,-i\8gq  
/** #Ye0*`  
* @author treeroot p&0 G  
* @since 2006-2-2 .wTb/x  
* @version 1.0 gNZ"Kr o6  
*/ `Fe/=]< $  
public class HeapSort implements SortUtil.Sort{ Os]. IL$  
44w "U%+  
/* (non-Javadoc) ;% i-:<ac  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0LP0q9S:9  
*/ EP<{3f y  
public void sort(int[] data) { ?B)e8i<[f  
MaxHeap h=new MaxHeap(); %&lwp  
h.init(data); QNv5CQ&  
for(int i=0;i h.remove(); PI9aKNt  
System.arraycopy(h.queue,1,data,0,data.length); wr(*RI"  
} O<mA+yk  
C OL"/3r  
private static class MaxHeap{ Fi7~JZZ  
*lu*h&Y  
void init(int[] data){ O*N:.|dUw  
this.queue=new int[data.length+1]; 1W-kZ(e  
for(int i=0;i queue[++size]=data; Lpnw(r9Y  
fixUp(size); }5z!FXB  
} "4T36b  
} s<:) ;-tL  
33a}M;vx  
private int size=0; y5D3zqCG  
JDp=w,7LF  
private int[] queue; 0R0_UvsXU  
n$h+_xN  
public int get() { $GQEdVSNo  
return queue[1]; - K"L6m|  
} .b!HEi<F  
ti]8_vP}*  
public void remove() { teLZplC=f  
SortUtil.swap(queue,1,size--); {K|ds($ 5  
fixDown(1); +# !?+'A  
} BLt_(S?Z`  
file://fixdown (JE&1 @  
private void fixDown(int k) { usu{1&g  
int j; q[Ey!h)xq  
while ((j = k << 1) <= size) { zW hzU|=8  
if (j < size %26amp;%26amp; queue[j] j++; aW;)-0+  
if (queue[k]>queue[j]) file://不用交换 t-iQaobF  
break; }dqOE-"I"n  
SortUtil.swap(queue,j,k); .vIRz-S  
k = j; &$#NV@  
} =i2]qj\  
} ' %rn-|)  
private void fixUp(int k) { e(OKE7  
while (k > 1) { .lI.I  
int j = k >> 1; nJ1<8 p  
if (queue[j]>queue[k]) F4~O-g.<  
break; h CV(O2jL  
SortUtil.swap(queue,j,k); p_fsEY  
k = j; LJ9#!r@H  
} =+<DNW@%  
} Wh"xt:  
OMab!  
} V,\}|_GY  
OU^I/TU  
} &sXk!!85:  
D$D;'Kij  
SortUtil: Pp4Q)2X  
8Bxb~*  
package org.rut.util.algorithm; `d x.<R#,  
qjf4G[]!  
import org.rut.util.algorithm.support.BubbleSort; O -p^S  
import org.rut.util.algorithm.support.HeapSort; <K/iX%b?  
import org.rut.util.algorithm.support.ImprovedMergeSort; WS1Y maV  
import org.rut.util.algorithm.support.ImprovedQuickSort; V.yDZ"  
import org.rut.util.algorithm.support.InsertSort; nn">   
import org.rut.util.algorithm.support.MergeSort; `Cy;/95m  
import org.rut.util.algorithm.support.QuickSort; [s%uE+``S  
import org.rut.util.algorithm.support.SelectionSort; g(S4i%\  
import org.rut.util.algorithm.support.ShellSort; l~@ -oE  
m (kKUv  
/** JiXN"s^mcb  
* @author treeroot =~dXP  
* @since 2006-2-2 q^QLNKOH"  
* @version 1.0 (8~Hr?1B  
*/ 3#F"UG2,_  
public class SortUtil { / =v1.9(  
public final static int INSERT = 1; + eZn  
public final static int BUBBLE = 2; I=YZ!*f/`  
public final static int SELECTION = 3; $UdFm8&  
public final static int SHELL = 4; 7L]Y.7>  
public final static int QUICK = 5; ^5FwYXAxi  
public final static int IMPROVED_QUICK = 6; :/fT8KCwo  
public final static int MERGE = 7; Ro2!$[P  
public final static int IMPROVED_MERGE = 8; =trLL+vGw'  
public final static int HEAP = 9; fCv.$5  
-9s&OKo`({  
public static void sort(int[] data) { w (ev=)7<  
sort(data, IMPROVED_QUICK); nQfSQMg  
} _Pl5?5eZj  
private static String[] name={ M=EV^Tw-=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Of<Vr.m{R  
}; A2`Xh#o  
<bywi2]z  
private static Sort[] impl=new Sort[]{ ;M *G  
new InsertSort(), 1ZWr@,\L  
new BubbleSort(), :ee'|c  
new SelectionSort(), S9qc34\^=  
new ShellSort(), ~(^?M  
new QuickSort(), O tR  
new ImprovedQuickSort(), T{F 'Y%  
new MergeSort(), 3nUC,T%  
new ImprovedMergeSort(), r+h$]OJ  
new HeapSort() &>}f\ch/  
}; y"w`yl{_  
9 tCF m.m  
public static String toString(int algorithm){ b X/%Q^Y  
return name[algorithm-1]; 4L&Rs;  
} =~k#<q1^  
TO] cZZ<  
public static void sort(int[] data, int algorithm) { ;\Pq  
impl[algorithm-1].sort(data); Z. xOO|  
} j3/K;U/SGJ  
"z{ rC}  
public static interface Sort { KU.F4I8}q  
public void sort(int[] data); w?R#ly  
} aR%E"P-6l  
QY1|:(  
public static void swap(int[] data, int i, int j) { "^VPe[lA  
int temp = data; (<Kf  
data = data[j]; q]P$NeEiZ"  
data[j] = temp; uCf _O~  
} *p^*>~i9)  
} K|rG&#1J  
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