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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。 !U!E_D.O  
插入排序:  e C{Z  
JT9<kB/07  
package org.rut.util.algorithm.support; *!/#39  
H7= z%Y9y  
import org.rut.util.algorithm.SortUtil; >z -(4Z  
/** t5APD?5 c  
* @author treeroot [L(l++.z  
* @since 2006-2-2 7 tpZE+OX  
* @version 1.0 D` X6'PP  
*/ 8} k,!R[J  
public class InsertSort implements SortUtil.Sort{ l1qwT0*6>  
B3t>M) 9  
/* (non-Javadoc) 1Qu,]i`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;wxt<   
*/ "6.p=te  
public void sort(int[] data) { $I36>  
int temp; N8q Z{CWn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~?5m5z O  
} kAliCD)  
} ')-(N um  
} 5; [|k$ v  
]+dl=SmF  
} 4Z<l>!  
({VBp[Mh  
冒泡排序: =ol][)Bd  
F s\P/YX  
package org.rut.util.algorithm.support; cB}2(`z9 B  
]e~^YZOs  
import org.rut.util.algorithm.SortUtil; TkoXzG8yE<  
;_a oM&  
/** F\rSYjMyk  
* @author treeroot 7YjucPH#  
* @since 2006-2-2 ;Hb[gvl   
* @version 1.0 8m6nw0   
*/ hb8XBBKR  
public class BubbleSort implements SortUtil.Sort{ r(T/^<  
mVAm^JK  
/* (non-Javadoc) J\$l3i/I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \X.=3lc&  
*/ 'sBXH EZA]  
public void sort(int[] data) { 'm5(MC,  
int temp; 32LB*zc  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <&%1pZ/6.  
if(data[j] SortUtil.swap(data,j,j-1); Z;'.pU~  
} .l5" X>  
} y]_8. 0zM  
} SvP\JQ<c  
} k1U8wdoT  
$2CGRhC  
} 0_mvz%[J  
cgXF|'yI&l  
选择排序: Z:J.FI@  
e@-Mlq)  
package org.rut.util.algorithm.support; {/xs9.8:JX  
;6txTcn`=  
import org.rut.util.algorithm.SortUtil; ^ [[ b$h$  
*>p(]_s,  
/** },aWCvJL  
* @author treeroot Zt2@?w;  
* @since 2006-2-2 9Pp|d"6]y  
* @version 1.0 M6*{#Y?  
*/ X7d.Ie  
public class SelectionSort implements SortUtil.Sort { fP1OH&Ar  
s8d}HI  
/* ?EQ^n3U$  
* (non-Javadoc) nCMa$+  
* z12But\<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5|/s::u  
*/  5vF}F^  
public void sort(int[] data) { qZsddll  
int temp; ~)a ;59<$  
for (int i = 0; i < data.length; i++) { G0 /vn9&  
int lowIndex = i; ~P#zhHw  
for (int j = data.length - 1; j > i; j--) { ou^nzm  
if (data[j] < data[lowIndex]) { n_n|^4 w  
lowIndex = j; }R&5qpl  
} %s@S|< W  
} N[<`6dpE  
SortUtil.swap(data,i,lowIndex); 3!9 yuf  
} IPR tm!  
} B4:l*P'  
k-pEBh OH  
} u 1{ym_  
Y0B1xL@  
Shell排序: f THun?Vn  
YATdGLTeq  
package org.rut.util.algorithm.support; 9N D+w6"  
1uS-Tx  
import org.rut.util.algorithm.SortUtil; )Ct*G= N  
G P[r^Z  
/** (5q%0|RzRs  
* @author treeroot RYZE*lWUh  
* @since 2006-2-2 soq".+Q  
* @version 1.0 qm}>J^hnB#  
*/ l \^nC2  
public class ShellSort implements SortUtil.Sort{ <VaMUm<2  
"c/s/$k//  
/* (non-Javadoc) >6I.%!jU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b LM"t0  
*/ #xP!!.DF(  
public void sort(int[] data) { uB <F.!3  
for(int i=data.length/2;i>2;i/=2){ {y:#'n  
for(int j=0;j insertSort(data,j,i); p=~h|(M|  
} H : T N  
} xeHb89GnoQ  
insertSort(data,0,1); Lubs{-5lk  
} (HaKF7Jsi  
ft/^4QcyAM  
/** <P^hYj-swh  
* @param data mheU#&|  
* @param j 1n`1o-&l-  
* @param i \5[D7}  
*/ D=~B7b:  
private void insertSort(int[] data, int start, int inc) { 1U7,X6=~  
int temp; .b#9q6F-/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2b#(X'ob  
} D!RE-w92X  
} (}C^_q:7d  
} $,;S\JmWP  
7SK 3  
} %[n R|a<  
.IH@_iX  
快速排序: wt}%2x} x  
MxgLzt Y  
package org.rut.util.algorithm.support; Sn(l$wk=  
#A3v]'7B  
import org.rut.util.algorithm.SortUtil; [X }@Ct6  
*vRI)>wU  
/** i$bzdc#s  
* @author treeroot XD^ dlL  
* @since 2006-2-2 G*(K UG>  
* @version 1.0 *t.q m5h  
*/  L%WME8PB  
public class QuickSort implements SortUtil.Sort{ afY_9g!\  
8Z dUPW\e  
/* (non-Javadoc) $,KP]~?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mLg{6qm(q  
*/ 7<3U?]0  
public void sort(int[] data) { z+k=|RMau  
quickSort(data,0,data.length-1); 7?MB8tJ5r4  
} 5c]}G.NV  
private void quickSort(int[] data,int i,int j){ sOl>5:D6  
int pivotIndex=(i+j)/2; oSn! "<x  
file://swap g8I!E$  
SortUtil.swap(data,pivotIndex,j); *qPdZ   
M ?Ndy*]  
int k=partition(data,i-1,j,data[j]); JY2/YDJ  
SortUtil.swap(data,k,j); }Kj Ju;  
if((k-i)>1) quickSort(data,i,k-1); n5v'  
if((j-k)>1) quickSort(data,k+1,j); lMC{SfdH  
cq,v1Y<  
} _~;&)cn,0  
/** b " ")BT  
* @param data hj&fQ}X  
* @param i 5iQmZ [  
* @param j zJ;>.0  
* @return Ufdl|smt1  
*/ X>Al:?`}N  
private int partition(int[] data, int l, int r,int pivot) { <&5m N  
do{ yuHZ&e  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2mqK3-c  
SortUtil.swap(data,l,r); #ya\Jdx   
} DH:GI1Yu>I  
while(l SortUtil.swap(data,l,r); GIm " )}W  
return l; 1~2R^#rm  
} jg [H}  
}bf=Ntk  
} 22`oFXb'  
dGW {l]N  
改进后的快速排序: OXHvT/L`  
C$<"w,  
package org.rut.util.algorithm.support; r{\BbUnf)  
uf)W-Er6~  
import org.rut.util.algorithm.SortUtil; y=AsgJ  
NunV8atn:  
/** :n'yQ#[rn  
* @author treeroot |h&<_9  
* @since 2006-2-2 "l@A[@R  
* @version 1.0 S&4+ e:K  
*/ /!3ZWXY\  
public class ImprovedQuickSort implements SortUtil.Sort { D|d4:;7  
B<|VeU  
private static int MAX_STACK_SIZE=4096; mC i[Ps  
private static int THRESHOLD=10; .u1X+P7  
/* (non-Javadoc) Y[Q @WdE9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _1^8xFe2  
*/ (CdJ;-@D  
public void sort(int[] data) { AF^T~?t  
int[] stack=new int[MAX_STACK_SIZE]; RU2c*q$^X  
HH)"]E5  
int top=-1; 9W!8gCs  
int pivot; <B6[i*&  
int pivotIndex,l,r; EM=w?T  
0YzsA#yv  
stack[++top]=0; X8/Tl \c  
stack[++top]=data.length-1; ]3*P:$Rq  
n*Q`g@`  
while(top>0){ kdp% !S%2  
int j=stack[top--]; 55.;+B5L *  
int i=stack[top--]; } h[>U  
o=pt_!i/  
pivotIndex=(i+j)/2; d%0+i/p  
pivot=data[pivotIndex]; <i{K7}':  
''IoC j  
SortUtil.swap(data,pivotIndex,j); g"wxC@IR  
x# VyQ[ok  
file://partition k$h [8l( <  
l=i-1; LVnHt}  
r=j; [oV{83f  
do{ bpCNho$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v "Me{+  
SortUtil.swap(data,l,r); 6*IpAIh  
} \PpXL*.  
while(l SortUtil.swap(data,l,r); 7K&}C;+  
SortUtil.swap(data,l,j); OL3UgepF  
E\0X`QeY  
if((l-i)>THRESHOLD){ ?O??cjiA@  
stack[++top]=i; }g`Gh|C  
stack[++top]=l-1; 8L%M<JRg~  
} -hWC_X:9jP  
if((j-l)>THRESHOLD){ ;DuXS y!g  
stack[++top]=l+1; [C1 LT2a  
stack[++top]=j; @mf({Q>  
} g\U/&.}DN  
79ckLd9  
} Sk:2+inU  
file://new InsertSort().sort(data); $;2)s} ci  
insertSort(data); o(*F])d;  
} $I@GUtzjp  
/** ,CciTXf  
* @param data z}ElpT[(;  
*/ 0DNU,u  
private void insertSort(int[] data) { z8HsYf(!  
int temp; 9R p2W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )MZC>:  
} !VwmPAMr#v  
} y4@gGC=  
} $Pxb1E  
d?A}qA[(  
} t9FDU  
+2RNZEc  
归并排序: )RN<GW'  
;QBh;jg4  
package org.rut.util.algorithm.support; B**Nn!}0  
5 L/x-i  
import org.rut.util.algorithm.SortUtil; $5AC1g'  
2j&v;dmh<  
/** m@jge)O&D  
* @author treeroot F8<"AI  
* @since 2006-2-2  G2`${aMS  
* @version 1.0 hQRL,?  
*/ \M{[f=6llh  
public class MergeSort implements SortUtil.Sort{ @w\I qr  
 ?CP2AK  
/* (non-Javadoc) NjX[;e-u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Il8f  
*/ PU1,DU  
public void sort(int[] data) { h[kU<mU"T  
int[] temp=new int[data.length]; _X4!xbP  
mergeSort(data,temp,0,data.length-1); b9~A-Z  
} 3`*Kav>"  
Q&CElx?L  
private void mergeSort(int[] data,int[] temp,int l,int r){ `'i( U7?  
int mid=(l+r)/2; h7]EB!D\A  
if(l==r) return ; }#1/fok  
mergeSort(data,temp,l,mid); ~S*b  
mergeSort(data,temp,mid+1,r); %{!R l@  
for(int i=l;i<=r;i++){ C&+6>L@  
temp=data; &]F3#^!^  
} @MiH(.Dq  
int i1=l; }4&/VvN  
int i2=mid+1; nv0#~UgE#a  
for(int cur=l;cur<=r;cur++){ l30Y8t~d  
if(i1==mid+1) !R'g59g  
data[cur]=temp[i2++]; UMU2^$\iS  
else if(i2>r) +bA%  
data[cur]=temp[i1++]; J0Z7 l  
else if(temp[i1] data[cur]=temp[i1++]; 6cz/n8Mg  
else >|g?wC}V;  
data[cur]=temp[i2++]; aI3CNeav  
} _{4^|{>Pv  
} f>2MI4nMG  
wM~H(=s`D  
} +1rkq\{l  
7b[wu~'( n  
改进后的归并排序: 5'KA'>@  
),(V6@Z?  
package org.rut.util.algorithm.support; /(hUfYm0  
iEm ?  
import org.rut.util.algorithm.SortUtil; [;A[.&6  
u 8^{  
/** /mA,F;   
* @author treeroot X6\ sF"E  
* @since 2006-2-2 =-"c*^$]  
* @version 1.0 NX[4PKJ0C  
*/ /Fgw$ ^H  
public class ImprovedMergeSort implements SortUtil.Sort { -F@L}|  
aC%&U4OS  
private static final int THRESHOLD = 10; E{E0Z9t7&  
t)f-mQz)  
/* S<`I Jpkv  
* (non-Javadoc) k*?I>%^6#T  
* "%qzj93>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jrxz'9qRG  
*/ &@% $2O.3  
public void sort(int[] data) { {pL+2%`~  
int[] temp=new int[data.length]; %}-?bHB1c  
mergeSort(data,temp,0,data.length-1); G2Vv i[c  
} P 43P]M2  
}}&#|)Yq  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^uBxgWIC  
int i, j, k; ? *>]")[>  
int mid = (l + r) / 2; v{aq`uH  
if (l == r) :Dt~e|  
return; - e"jw#B  
if ((mid - l) >= THRESHOLD) .,0bE  
mergeSort(data, temp, l, mid); =WIJ>#Go<  
else :,B7-kBw  
insertSort(data, l, mid - l + 1); X] %itA  
if ((r - mid) > THRESHOLD) *v ?m6R=)h  
mergeSort(data, temp, mid + 1, r); A A^{B  
else zCv"]%  
insertSort(data, mid + 1, r - mid); #bH_Dg5I  
c(#;_Ve2P  
for (i = l; i <= mid; i++) { MUnEuhXTr  
temp = data; [F!Y%Zp  
} A@hppaP!  
for (j = 1; j <= r - mid; j++) { U8.7>ENnP&  
temp[r - j + 1] = data[j + mid]; _>+8og/%@  
} ]hos+;4p  
int a = temp[l]; +{<#(}  
int b = temp[r]; ^D%FX!$  
for (i = l, j = r, k = l; k <= r; k++) { ziPR>iz-  
if (a < b) { YNwp/Y  
data[k] = temp[i++]; km~Ll   
a = temp; br-]fE.be  
} else { AN!s{7V3  
data[k] = temp[j--]; :cB=SYcC%  
b = temp[j]; oVFnl A  
} ;oZ)Wt  
} R;,g1m|]  
} 0:w"M<80  
eET&pP3Rp  
/** AIMSX]m  
* @param data R^?/' dr  
* @param l 2c6g>?  
* @param i |L2SFB?d=  
*/ ?;[w" `"  
private void insertSort(int[] data, int start, int len) { wLc4Dm*V  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1 zw*/dp  
} *(C(tPhC  
} wE+${B03  
} .*m>\>Gsgw  
} J'$>Gk]  
@)o^uU T  
堆排序: !?c|XdjZ  
8Nu=^[qwQM  
package org.rut.util.algorithm.support; /xtq_*I1S  
I:K"'R^  
import org.rut.util.algorithm.SortUtil; {|I;YDA  
hGpv2>M  
/** y;_% W  
* @author treeroot Pj}6 6.  
* @since 2006-2-2 UMAgA!s  
* @version 1.0 Zm6{n '  
*/ zR2B- &]H  
public class HeapSort implements SortUtil.Sort{ Tg!m`9s+  
_S>JKz  
/* (non-Javadoc) I(S`j[U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (=7Cs  
*/ eek7=Z  
public void sort(int[] data) { th;{V%:LW  
MaxHeap h=new MaxHeap(); *98$dQR$  
h.init(data); 6I@h9uIsze  
for(int i=0;i h.remove(); n{6G"t:^l  
System.arraycopy(h.queue,1,data,0,data.length); !pD*p)`s  
} BD(Z5+EU1  
L 4!{h|  
private static class MaxHeap{ ~\J}Kqg  
tH-C8Qxy  
void init(int[] data){ ,^uEYT}j  
this.queue=new int[data.length+1]; RzWXKBI\E]  
for(int i=0;i queue[++size]=data; 0#nPbe,Lj  
fixUp(size); ~ 4kc/a  
} #B4%|v;`E?  
} T}8Y6N<\m  
6i1LjLB  
private int size=0; #Y$hNQQ$F  
?Y@N`S  
private int[] queue; z CvKDlL  
zux{S; :?  
public int get() { iyg*Xbmi~.  
return queue[1]; %}%Qc6.H  
} Z]B~{!W1  
@nux9MX<9  
public void remove() { v%q0OX>9X"  
SortUtil.swap(queue,1,size--); <yd{tD$A*  
fixDown(1); 3\XU_Xs(]  
} HSc~*Q  
file://fixdown 1fpQLaT  
private void fixDown(int k) { %44leINx  
int j; UEguF &  
while ((j = k << 1) <= size) { ljb7oA3cP4  
if (j < size %26amp;%26amp; queue[j] j++; =>_\fNy  
if (queue[k]>queue[j]) file://不用交换 m6w].-D8  
break; p>4-s, W  
SortUtil.swap(queue,j,k); dw*_(ys  
k = j; #`)(e JF  
} >Wv;R2|  
} A<??T[  
private void fixUp(int k) { ~^1{B\I  
while (k > 1) { 7eAX*Kgt<_  
int j = k >> 1; ev*k*0  
if (queue[j]>queue[k]) Ru>MFG  
break; oM>Z;QVRC:  
SortUtil.swap(queue,j,k); G|!on<l&  
k = j; ?.Ca|H<  
} s+<Yg$)  
} .=s&EEF  
EwvoQ$#jv  
} g\&g N  
a ?)NC  
} AJF#Aw `o  
2Eu`u!jhx  
SortUtil: uC(V  
0"f\@8r(  
package org.rut.util.algorithm; G;l_|8<t#\  
.oeX"6K  
import org.rut.util.algorithm.support.BubbleSort; oU.R2\Q  
import org.rut.util.algorithm.support.HeapSort; zd >t-?g  
import org.rut.util.algorithm.support.ImprovedMergeSort; <nT +$  
import org.rut.util.algorithm.support.ImprovedQuickSort; (2$p{Uf  
import org.rut.util.algorithm.support.InsertSort; HK2[]G  
import org.rut.util.algorithm.support.MergeSort; ?gt l)q  
import org.rut.util.algorithm.support.QuickSort; %5"9</a&G  
import org.rut.util.algorithm.support.SelectionSort; G$F<$  
import org.rut.util.algorithm.support.ShellSort; Wa{`VS  
[q8 P~l  
/** )QU  
* @author treeroot ! t?iXZ  
* @since 2006-2-2 @emK1iwm  
* @version 1.0 Ezd_`_@R  
*/ J;8IY=  
public class SortUtil { ,)Znb=  
public final static int INSERT = 1; 4\8+9b\9"  
public final static int BUBBLE = 2; 1cpiHZa  
public final static int SELECTION = 3; jK& h~)  
public final static int SHELL = 4; 5>D>% iaHv  
public final static int QUICK = 5; Q7jb'y$ozO  
public final static int IMPROVED_QUICK = 6; h7lDHIQf  
public final static int MERGE = 7; "hH.#5j  
public final static int IMPROVED_MERGE = 8; l~w2B>i)  
public final static int HEAP = 9; U@uGNMKR  
w"Gm;B4  
public static void sort(int[] data) { of%Ktm5Qi  
sort(data, IMPROVED_QUICK); @1o/0y"  
} C26>BU<  
private static String[] name={ 61k"p2?+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I 8`VNA&b  
}; 3z{?_;bR  
i@"@9n~  
private static Sort[] impl=new Sort[]{ M_/7D|xl/T  
new InsertSort(), q_A!'sm@)  
new BubbleSort(), Vt:~q{9*k  
new SelectionSort(), YIQ 4t  
new ShellSort(), P3+5?.p.  
new QuickSort(), 4%>$-($  
new ImprovedQuickSort(), s(/; U2"e  
new MergeSort(), ^/I 7|u]  
new ImprovedMergeSort(), < $lCkSx<Q  
new HeapSort() YNKHN2E8  
}; K* LlW@  
yerg=,$_i  
public static String toString(int algorithm){ a|t$l=|DD  
return name[algorithm-1]; XDOY`N^L  
} 96( v  
`{3<{wgw  
public static void sort(int[] data, int algorithm) { L*xhGoC=  
impl[algorithm-1].sort(data); cQy2"vtU  
} zPn+ V7F  
"O3tq =Q  
public static interface Sort { vWz m @  
public void sort(int[] data); ` Mjj@[  
} *\+\5pu0  
PUp6Q;AdQ  
public static void swap(int[] data, int i, int j) { H<i]V9r  
int temp = data; 5F)C  jQ  
data = data[j]; [%y';`( x  
data[j] = temp; [1g8*j~L  
} zy/@ WFPE  
} a*lh)l<KV  
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