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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。 ]HbY  
插入排序: Qry@ s5  
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package org.rut.util.algorithm.support; xW+6qtG`  
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import org.rut.util.algorithm.SortUtil; mwO6g~@ `  
/** ^23~ZHu  
* @author treeroot *j|~$e}C  
* @since 2006-2-2 3h]g}&k  
* @version 1.0 mupT<_Y  
*/ ~EW(Gs!=C  
public class InsertSort implements SortUtil.Sort{ M.JA.I@XC  
`T1  
/* (non-Javadoc) g%aYDl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6u?>M9  
*/ E[OJ+ ;c  
public void sort(int[] data) { 1Te %F+7  
int temp; {% 6}'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9FF0%*tGo  
} s$IDLs,WM  
} AI2~Jp  
} [=C6U_vU  
v<k?Vu  
} 4a&RYx  
2bz2KB5>  
冒泡排序: //B&k`u  
v6|RJt?  
package org.rut.util.algorithm.support; g%o(+d  
OU E (I3_  
import org.rut.util.algorithm.SortUtil; 2y75  
NCveSP  
/** L]7=?vN=8  
* @author treeroot />C^WQI^  
* @since 2006-2-2 rD tY[  
* @version 1.0 K&u_R  
*/ cUk7i`M;6  
public class BubbleSort implements SortUtil.Sort{ .C%<P"=J4h  
b\f O8{k  
/* (non-Javadoc) xl{=Y< ;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5#6|j?_a  
*/ :x3QRF  
public void sort(int[] data) { t}_r]E,{u  
int temp; LPXi+zj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 39c2pV[  
if(data[j] SortUtil.swap(data,j,j-1); !6 #X>S14  
} _=>He=v/  
} P-[-pi@  
} #I.+aV+2oQ  
} u$z`   
&md`$a/  
} +SzU  
RIR\']WN  
选择排序: x%=si[P  
6dQ-HI*Y#  
package org.rut.util.algorithm.support; a9e>iU  
2 B1q*`6R  
import org.rut.util.algorithm.SortUtil; je\Ph5"  
85= )lu  
/** E#RDqL*J  
* @author treeroot !"AvY y9  
* @since 2006-2-2 xa'*P=<)C'  
* @version 1.0 F-QzrquS  
*/ Xxj- 6i  
public class SelectionSort implements SortUtil.Sort { 8bGd} (  
Gf6p'(\zun  
/* E*& vy  
* (non-Javadoc) Ha#= (9.  
* d2FswF$C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pp?D7S  
*/ m[osg< CR_  
public void sort(int[] data) { TvoyZW\?w  
int temp; >-?f0 K  
for (int i = 0; i < data.length; i++) { E, Z$pKL?  
int lowIndex = i; 5PCqYN(:B  
for (int j = data.length - 1; j > i; j--) { _~m5^Q&  
if (data[j] < data[lowIndex]) { L<c4kw  
lowIndex = j; t|?ez4/{z  
} j a[Et/r  
} @/~omg}R  
SortUtil.swap(data,i,lowIndex); r wL`Czs  
} 1dY}\Sp  
} [|wZ77\  
sfH_5 #w  
} NSMyliM1Y  
ZmqKQO  
Shell排序: QpH'PYy  
W-f=]eWg  
package org.rut.util.algorithm.support; Z3e| UAif  
/V8 #[9K  
import org.rut.util.algorithm.SortUtil; yqs4[C  
,oe <  
/** u]wZQl#-  
* @author treeroot T  wB}l  
* @since 2006-2-2 ;<Sd~M4f  
* @version 1.0 )6MfRw  
*/ ?PxP% $hS  
public class ShellSort implements SortUtil.Sort{ hF?1y`20  
1#g2A0U,  
/* (non-Javadoc) J( TkXNm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jwe*(k]z  
*/ l9~e". ~'  
public void sort(int[] data) { h8j.(  
for(int i=data.length/2;i>2;i/=2){ B4/>H|  
for(int j=0;j insertSort(data,j,i); e4$H&'b|  
} t,Lrfv])  
} e ,'_xV  
insertSort(data,0,1); E`JI>7  
} 234p9A@  
GMx&y2. Z  
/** @u+]aI!`-  
* @param data `RT>}_j  
* @param j fb7;|LF  
* @param i G>_*djUf  
*/ 2szPAuN+  
private void insertSort(int[] data, int start, int inc) { lBE= (A`  
int temp; H'5)UX@LP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uCvj!  
} YMyfL8bO  
}  ~NgA  
} Ib!RD/  
BZ#(   
} Y Uc+0  
pad*oPH,  
快速排序: %Xg4b6<9  
F;EwQjTF  
package org.rut.util.algorithm.support; P:S.~Jq  
\w>y`\6mX  
import org.rut.util.algorithm.SortUtil; hFUlNJ  
Q}JOU  
/** BVQqY$>  
* @author treeroot m 0C@G5  
* @since 2006-2-2 u#fM_>ML  
* @version 1.0 /62!cp/F/D  
*/ TqQB@-!  
public class QuickSort implements SortUtil.Sort{ /HEw-M9z  
N% B>M7-=  
/* (non-Javadoc) wu6;.xTLl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !,uE]gwLw  
*/ m~ABC#,2  
public void sort(int[] data) { wm@@$  
quickSort(data,0,data.length-1); qo~O|~  
} `hm-.@f,9  
private void quickSort(int[] data,int i,int j){ //MUeTxR  
int pivotIndex=(i+j)/2; A2FYBM`Q&D  
file://swap }K>d+6qk5  
SortUtil.swap(data,pivotIndex,j); \K{ z  
{?0lBfB"  
int k=partition(data,i-1,j,data[j]); ]q[D>6_  
SortUtil.swap(data,k,j); i"FtcP^  
if((k-i)>1) quickSort(data,i,k-1); ~/U 1xk%  
if((j-k)>1) quickSort(data,k+1,j); [aLI '  
@bLy,Xr&  
} t3ZOco@~P  
/** XJB)rP  
* @param data gg/-k;@ Rf  
* @param i T{^rt3a  
* @param j ]0OR_'?,  
* @return bWS&Yk(  
*/ FxY}m  
private int partition(int[] data, int l, int r,int pivot) { 3`?7 <YJ  
do{ T<>,lQs(a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .43'HV  
SortUtil.swap(data,l,r); Y-z(zS^1  
} zI uJ-8T"  
while(l SortUtil.swap(data,l,r); 1H`,WQ1mG  
return l; =I5>$}q_&,  
} 'oVx#w^mf  
">nxHU  
} On?v|10r'  
Lb-OsKU  
改进后的快速排序: ]5cT cX;Z#  
?UR0:f:}oc  
package org.rut.util.algorithm.support;  }v{LRRi  
$wa{~'  
import org.rut.util.algorithm.SortUtil; 7EEl +;wK  
LOYk9m  
/** G!##X: 6'  
* @author treeroot gJ+'W1$/  
* @since 2006-2-2 V Q@   
* @version 1.0 e%M;?0j  
*/ Ne!lH@ql  
public class ImprovedQuickSort implements SortUtil.Sort { T763:v  
R29~~IOqO  
private static int MAX_STACK_SIZE=4096; C): 1?@  
private static int THRESHOLD=10; =svN#q5s  
/* (non-Javadoc) q<<v,ihh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wJqMa9|  
*/ {Xy5pfW Q  
public void sort(int[] data) { 4_lrg|X1  
int[] stack=new int[MAX_STACK_SIZE]; 1I6px$^E\  
Y@iS_lR  
int top=-1; N~gzDQ3  
int pivot; tOD6&<  
int pivotIndex,l,r; 3}1u\(Mf  
(9 d&  
stack[++top]=0; %;' s4ly  
stack[++top]=data.length-1; .{^5X)  
9*wK@yEl  
while(top>0){ f~[7t:WD*  
int j=stack[top--]; t@;p  
int i=stack[top--]; wlvgg  
B[Scr5|  
pivotIndex=(i+j)/2; P+sW[:  
pivot=data[pivotIndex]; 3?yg\  
]EAO+x9  
SortUtil.swap(data,pivotIndex,j); i]4I [!  
!qg`/y9  
file://partition Ml5w01O  
l=i-1; Q&;9 x?e  
r=j; ?V=ZIGj  
do{ r u%y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w9imKVry  
SortUtil.swap(data,l,r); *^4"5X@  
} n>XdU%&  
while(l SortUtil.swap(data,l,r); ^ @5QP$.  
SortUtil.swap(data,l,j); 6 "sSoj  
N+xP26D8  
if((l-i)>THRESHOLD){ WH}y"W  
stack[++top]=i; {P./==^0  
stack[++top]=l-1; I236 RIq  
}  (ZizuHC  
if((j-l)>THRESHOLD){ F>l] 9!P|m  
stack[++top]=l+1; ?l )[7LR4  
stack[++top]=j; Avc%2 +  
} T^KKy0ZGM  
59A}}.@?m  
} SH$PwJU  
file://new InsertSort().sort(data); ~mxO7cy5Cg  
insertSort(data); 7}>EJ  
} ki!0^t:9  
/** L2z[   
* @param data kevrsV]/$  
*/ " 8MF_Gu):  
private void insertSort(int[] data) { 7$=In K  
int temp; 0S~rgq|O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2ilQXy  
} vE?G7%,  
} aFYIM`?(  
} oc`H}Wvn  
F41=b4/  
} t~XN}gMxw  
yf+)6D -9n  
归并排序: oPM96 (  
}Y\%RA  
package org.rut.util.algorithm.support; EQM {  
T8g$uFo  
import org.rut.util.algorithm.SortUtil; +0Y&`{#Z  
=H8;iS2R  
/** 6&x@.1('z  
* @author treeroot 0,")C5j  
* @since 2006-2-2 ZE}}W _  
* @version 1.0 :I#V.  
*/ HZge!Yp<  
public class MergeSort implements SortUtil.Sort{ }}~|!8  
}7Q%6&IR  
/* (non-Javadoc) 5b*C1HS@X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T~e.PP  
*/ |{ip T SH  
public void sort(int[] data) { C6PdDRf  
int[] temp=new int[data.length]; #6=  
mergeSort(data,temp,0,data.length-1); rILYI;'o  
} l f, 5w  
?caSb =f  
private void mergeSort(int[] data,int[] temp,int l,int r){ [W&T(%(W-  
int mid=(l+r)/2; S9.o/mr  
if(l==r) return ; 4pvMd  
mergeSort(data,temp,l,mid); hgq;`_;1,  
mergeSort(data,temp,mid+1,r); @ 6vIap|  
for(int i=l;i<=r;i++){ W<g1<z\f  
temp=data; fJg+Ryo  
} UK!(G  
int i1=l; n[rCQdM&U"  
int i2=mid+1; $UwCMPs X  
for(int cur=l;cur<=r;cur++){ `c$V$/IT  
if(i1==mid+1) upmx $H>  
data[cur]=temp[i2++]; mfr|:i  
else if(i2>r) y9ZvV0  
data[cur]=temp[i1++]; F^:3?JA _  
else if(temp[i1] data[cur]=temp[i1++]; 75lA%| *X  
else gbA_DZ  
data[cur]=temp[i2++]; l/5 hp.  
} [/r(__.  
} `a/`,N  
_[BP 0\dPW  
} hZb_P\1X  
/n&&Um\  
改进后的归并排序: @0''k  
jP.dDYc  
package org.rut.util.algorithm.support; {JLtE{  
^\m![T\bX  
import org.rut.util.algorithm.SortUtil; TWTb?HP  
h?U O&(  
/** i%?*@uj  
* @author treeroot P%n>Tg80M  
* @since 2006-2-2 a<e[e>  
* @version 1.0 SpBy3wd  
*/ ~xTt204S  
public class ImprovedMergeSort implements SortUtil.Sort { LghfM"g  
u ga_T  
private static final int THRESHOLD = 10; 6u6x  
A#,ZUOPGH  
/* ;'1d1\wiDQ  
* (non-Javadoc) V7/Rby Q  
* xE}>,O|'q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pxi3PY?  
*/ H5an%kU|j  
public void sort(int[] data) { DY*N|OnqJ  
int[] temp=new int[data.length]; EU#^7  
mergeSort(data,temp,0,data.length-1); |7~<Is~ *  
} 6S #Cl>v  
Z\sDUJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]4e;RV-B  
int i, j, k; %yC,^  
int mid = (l + r) / 2; v$9y,^p@e  
if (l == r) pgo$ 61  
return; DmcZta8n]  
if ((mid - l) >= THRESHOLD) 1Y,Z %d  
mergeSort(data, temp, l, mid); yhJ@(tu.Gd  
else :4|4=mkr  
insertSort(data, l, mid - l + 1); !)$Zp\Sg  
if ((r - mid) > THRESHOLD) ~TtiO#,t  
mergeSort(data, temp, mid + 1, r); +ZV5o&V>  
else /9X7A;O  
insertSort(data, mid + 1, r - mid); Hn:Crl y#  
b.938#3,  
for (i = l; i <= mid; i++) { <UCl@5g&  
temp = data; /wG2vE8e  
} '+ ?X  
for (j = 1; j <= r - mid; j++) { +7}]E1Uf  
temp[r - j + 1] = data[j + mid]; j<$2hiI/?&  
} l,).p  
int a = temp[l]; HaYo!.(Fv  
int b = temp[r]; ;*J  
for (i = l, j = r, k = l; k <= r; k++) { !R$`+wZ62  
if (a < b) { \)e'`29;  
data[k] = temp[i++]; d;>QhoiL  
a = temp; ~LC-[&$  
} else { KPki}'GO  
data[k] = temp[j--]; CC`JZ.SO  
b = temp[j]; 7EJ+c${e.-  
} $cg cX  
} +ge?w#R  
} t JmTBsn  
2 E= L8<  
/** ;VK.2^jW!  
* @param data ~J]qP#C  
* @param l rl.}%Ny  
* @param i XPPdwTOr  
*/ '%;m?t% q  
private void insertSort(int[] data, int start, int len) { nt<]d\o0  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d-%hjy3N  
} EM_d8o)`B  
} gM]:Ma  
} d zMb5puH  
} MK*r+xfSae  
Q{/Ef[(a@  
堆排序: TqQ[_RKg2  
Ort(AfW  
package org.rut.util.algorithm.support; Nboaf  
OTv)  
import org.rut.util.algorithm.SortUtil; \7_y%HR  
{RPI]DcO/  
/** V[V[~;Py  
* @author treeroot iow"n$/  
* @since 2006-2-2 Ul# r  
* @version 1.0 )%]J>&/0J  
*/ 3' 'me  
public class HeapSort implements SortUtil.Sort{ IGgL7^MF  
,: ^u-b|  
/* (non-Javadoc) }0 ?3:A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iDD$pd,e\  
*/ 8CE = 4  
public void sort(int[] data) { iRBfx  
MaxHeap h=new MaxHeap(); +,l-Nz  
h.init(data); 'fW-Y!k%  
for(int i=0;i h.remove(); mZBo~(}  
System.arraycopy(h.queue,1,data,0,data.length); ig"L\ C"T  
} tX[WH\(xI  
bd`P0f?  
private static class MaxHeap{ 1Ws9WU  
H*6W q  
void init(int[] data){ R-14=|7a-  
this.queue=new int[data.length+1]; #;S*V"  
for(int i=0;i queue[++size]=data; v^P O|Z  
fixUp(size); NlXimq  
} 1mJ Hued=6  
} r<\u6jF  
[B3RfCV{  
private int size=0; M\=2uKG#  
)}v l\7=  
private int[] queue; ! P4*+')M  
#E]59_  
public int get() { 4K74=r),i  
return queue[1]; *ui</+  
} vSh`&w^*  
?ubro0F:  
public void remove() { 5-M-X#(  
SortUtil.swap(queue,1,size--); '>" 4  
fixDown(1); ^@]3R QB  
} `mqMLo *  
file://fixdown \NC3'G:Ii  
private void fixDown(int k) { nFn5v'g  
int j; P;*(hY5&  
while ((j = k << 1) <= size) { :EyD+!LJ  
if (j < size %26amp;%26amp; queue[j] j++; E"0>yl)  
if (queue[k]>queue[j]) file://不用交换 >d6|^h'0  
break; adw2x pj  
SortUtil.swap(queue,j,k); .(vwIb8\_  
k = j; {Ha57Wk8D  
} M3AXe]<eC1  
} Pc9H0\+Xk  
private void fixUp(int k) { v0y(58Rz.  
while (k > 1) { 0IpmRH/  
int j = k >> 1; /tLVX} &  
if (queue[j]>queue[k]) 0$njMnB2l  
break; #;<Y[hR{P  
SortUtil.swap(queue,j,k); Js;h%  
k = j; hOeRd#AQK  
} z)"=:o7  
} ~s{$WL&  
svSVG:48  
} f!"w5qC^  
E_`=7 i  
} @XVTU  
E.f%H(b  
SortUtil: Ep}s}Stlr}  
W8<%[-r  
package org.rut.util.algorithm; %$mA03[MQ  
M(fTKs  
import org.rut.util.algorithm.support.BubbleSort; s@C}P  
import org.rut.util.algorithm.support.HeapSort; =Sv/IXX\di  
import org.rut.util.algorithm.support.ImprovedMergeSort; <uJ@:oWG7  
import org.rut.util.algorithm.support.ImprovedQuickSort; |g~ZfnP_%  
import org.rut.util.algorithm.support.InsertSort; \DzGQ{`~m  
import org.rut.util.algorithm.support.MergeSort; yHGADH0B  
import org.rut.util.algorithm.support.QuickSort; pXUSLs  
import org.rut.util.algorithm.support.SelectionSort; (#'>(t(4  
import org.rut.util.algorithm.support.ShellSort; @@%ataUSBT  
q*KAk{kR(v  
/** 16 $B>  
* @author treeroot ;nGa.= "L  
* @since 2006-2-2 o}!PQ#`M  
* @version 1.0 ME dWLFf  
*/ DrQ`]]jj7  
public class SortUtil { /E>e"tvss  
public final static int INSERT = 1; [!z,lY>  
public final static int BUBBLE = 2; u4j5w  
public final static int SELECTION = 3; Q20 %"&Xp]  
public final static int SHELL = 4; he4(hX^  
public final static int QUICK = 5;  )*[3Vq  
public final static int IMPROVED_QUICK = 6; BzzTGWq\  
public final static int MERGE = 7; :Sma`U&  
public final static int IMPROVED_MERGE = 8; g5yJfRLxp  
public final static int HEAP = 9; ]?*wbxU0  
r3Ykz%6  
public static void sort(int[] data) { /o[w4d8  
sort(data, IMPROVED_QUICK); Q;u pau  
} HV.t6@\};  
private static String[] name={ O84i;S+-p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #F#%`Rv1  
}; A's{j7  
g){<y~Mk  
private static Sort[] impl=new Sort[]{ RZ7@cQY  
new InsertSort(), XRH!]!  
new BubbleSort(), Uv.)?YeGh  
new SelectionSort(), 40/Y\  
new ShellSort(), %LV9=!w  
new QuickSort(), ..qCPlK;  
new ImprovedQuickSort(), YMgNzu  
new MergeSort(), G?ZXWu.  
new ImprovedMergeSort(), weQ_*<5%  
new HeapSort() 8RX&k  
}; uS-|wYE  
2?5>o!C  
public static String toString(int algorithm){ q@qsp&0/  
return name[algorithm-1]; "#]$r  
} e!Hhs/&!T  
_^;Z~/.  
public static void sort(int[] data, int algorithm) { : 'c&,oLY  
impl[algorithm-1].sort(data); xmG<]WF>E  
} VnzZTG s  
d@^ZSy>L2  
public static interface Sort { u"8yK5!  
public void sort(int[] data); Q@niNDaW2  
} zTp"AuNHN  
hc1N ~$3!G  
public static void swap(int[] data, int i, int j) { =WLY6)]A  
int temp = data; SIllU  
data = data[j]; yr6V3],Tp  
data[j] = temp; "z c l|@  
} nEfK53i_  
} <[v[ci  
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