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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。 vxN,oa{hf  
插入排序: vSyR% j  
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package org.rut.util.algorithm.support; &?[uY5Mk  
<WPLjgtn3  
import org.rut.util.algorithm.SortUtil; b{X,0a{*  
/** 6yU#;|6d  
* @author treeroot |t<Uh,Bt  
* @since 2006-2-2 /<"<N<X  
* @version 1.0 VR:4|_o  
*/ xcf`i:\  
public class InsertSort implements SortUtil.Sort{ _6O\*|'6  
_c:}i\8R  
/* (non-Javadoc) G%Dhj)2}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p>9-Ga  
*/ {c|{okQ;Q  
public void sort(int[] data) { '#Yqs/V  
int temp; O:G5n 5J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p0r:U< &  
} kx3?'=0;5  
} ]|6)'L&]*s  
} yv),>4_6  
uu5L9.i9  
} :9c[J$R4  
qhE1 7Hf  
冒泡排序: 8 16OV  
ph5rS<  
package org.rut.util.algorithm.support; CN(}0/  
[9c|!w^F  
import org.rut.util.algorithm.SortUtil; CRpMpPi@}  
()cqax4  
/** ON()2@Y4  
* @author treeroot E$8 D^Zt  
* @since 2006-2-2 L+GVB[@3Y  
* @version 1.0 PP1?UT=]  
*/ * |dz.Tr  
public class BubbleSort implements SortUtil.Sort{ j*7#1<T  
=uG}pgh0  
/* (non-Javadoc) BNj@~uC{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p]lZ4#3  
*/ o$Jop"To  
public void sort(int[] data) { C*C;n4AT  
int temp; Of@ LEEh6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \x(ILk|'c  
if(data[j] SortUtil.swap(data,j,j-1); [v%j?  
} ()\=(n!J  
} v4$"{W;'  
} 8gI f  
} &xgKHbg  
r9\7I7z  
} _`Lv@T.  
16cc9%   
选择排序: Qo%IZw$l  
/[<1D|f%  
package org.rut.util.algorithm.support; Mtw7aK  
k1h>8z.Tg  
import org.rut.util.algorithm.SortUtil; @)^|U"  
GJeP~   
/** <F%c"Rkh  
* @author treeroot #'qDNY@w}  
* @since 2006-2-2 7]J7'!Iz  
* @version 1.0 $URL7hrhU  
*/ CW+]Jv]"  
public class SelectionSort implements SortUtil.Sort { Ow3t2G  
O_S%PX  
/* &;x*uG  
* (non-Javadoc) kWZ@v+Mk3  
* o1k X`Eu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # s}&  
*/ :svKE.7{  
public void sort(int[] data) { l.iT+T  
int temp; Md5|j0#p  
for (int i = 0; i < data.length; i++) { Quts~Q  
int lowIndex = i; pRez${f.(s  
for (int j = data.length - 1; j > i; j--) { m|by^40A(  
if (data[j] < data[lowIndex]) { pl4:>4l/  
lowIndex = j; Tu[I84  
} f_m~_`m  
} Uv|?@zy#  
SortUtil.swap(data,i,lowIndex); rm5@dM@  
} 3ss0/\3P  
} hN"cXz"/  
*K'_"2J  
} Cx[Cst `  
.Xcf *$.;s  
Shell排序: RF|r@/S  
4))5l9kc.  
package org.rut.util.algorithm.support; *U}cj A:ZN  
W|I<hY\X  
import org.rut.util.algorithm.SortUtil; `z!6zo2d  
!8@8  
/** g)**)mz[  
* @author treeroot n~mP7X%wE7  
* @since 2006-2-2 ]*&`J4i  
* @version 1.0 AK_,$'f  
*/ ]ME2V  
public class ShellSort implements SortUtil.Sort{ .`TDpi9OB  
mr[+\ 5  
/* (non-Javadoc) yBYZ?gc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _7bQR7s  
*/ bQ`|G(g-d  
public void sort(int[] data) { TOge!Q>a  
for(int i=data.length/2;i>2;i/=2){ F`e o3z  
for(int j=0;j insertSort(data,j,i); \jCN ]A<  
}  JE=3V^k  
} F5s`AjU  
insertSort(data,0,1); ;/R\!E   
} }7+`[g  
=#.qe=  
/** xO0}A1t Wd  
* @param data LUfo@R  
* @param j NxGSs_7  
* @param i GS@ Zc2JPF  
*/ 1x3>XN]a  
private void insertSort(int[] data, int start, int inc) { 9:4m@dguh-  
int temp; u 2%E(pr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KfkU_0R+~v  
} vo!QJ  
} {;^GKb+  
} 1>'xmp+#  
wN2D{Jj  
} zS/1v+  
A2p]BW&  
快速排序: ?C`&*+  
E06)&tF  
package org.rut.util.algorithm.support; R\Of ,  
l\"wdS}  
import org.rut.util.algorithm.SortUtil; ,1e\}^  
0wpGIT!2  
/** o56UlN  
* @author treeroot iu.$P-s  
* @since 2006-2-2 =jD9oMs  
* @version 1.0 8k9q@FSln  
*/ 0 ~^l*  
public class QuickSort implements SortUtil.Sort{  <6STw  
4sM9~zC5  
/* (non-Javadoc) pdq5EUdS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SpA-E/el  
*/ *OU&`\bmE  
public void sort(int[] data) { O3En+m~3n)  
quickSort(data,0,data.length-1); t+t D  
} w%uM=YmuT  
private void quickSort(int[] data,int i,int j){ m2>$)\-;  
int pivotIndex=(i+j)/2; kj]m@mS[  
file://swap du>d?  
SortUtil.swap(data,pivotIndex,j); 2"pFAQBw~i  
tBtmqxx  
int k=partition(data,i-1,j,data[j]); #VU>Z|$@N  
SortUtil.swap(data,k,j); D`hg+64}  
if((k-i)>1) quickSort(data,i,k-1); 8\BYm|%aa  
if((j-k)>1) quickSort(data,k+1,j); _BPp=(|  
#'fQx`LV  
} a?]~Sw"@  
/** V[^ +lR  
* @param data !JnxNIr&i|  
* @param i ewOe A|  
* @param j W;^6=(&xn  
* @return #%{x*y:Ms  
*/ .gs:.X)TG9  
private int partition(int[] data, int l, int r,int pivot) { R&@NFin  
do{ ^2-+MWW.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LLU]KZhtY|  
SortUtil.swap(data,l,r); 8<_dNt'91  
} HbMD5(  
while(l SortUtil.swap(data,l,r); <Url&Z  
return l; Ji e=/:&  
} *f k3IvAXu  
5fuYva >Ik  
} q!whWA  
3dB{DuQ  
改进后的快速排序: -o B` v'  
@M=\u-jJ.  
package org.rut.util.algorithm.support; wak`Jte=}m  
^wW{7Uq>  
import org.rut.util.algorithm.SortUtil;  E-L>.tD  
fK; I0J  
/** 4)].{Z4 q  
* @author treeroot V\P .uOI  
* @since 2006-2-2 -5u. Ix3  
* @version 1.0 -}KW"#9c  
*/ _[{oK G^u  
public class ImprovedQuickSort implements SortUtil.Sort { _64<[2  
<ql:n  
private static int MAX_STACK_SIZE=4096; .s`7n *xz  
private static int THRESHOLD=10; 5O]eD84B  
/* (non-Javadoc) 9RmdQ]1n4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K/|qn)  
*/ t6! B  
public void sort(int[] data) { GK[[e~#u  
int[] stack=new int[MAX_STACK_SIZE]; nna boD  
6(-c$d`C.0  
int top=-1; ,'a[1RN  
int pivot; 3&5AbIZ  
int pivotIndex,l,r; [9,34/i  
my*E7[  
stack[++top]=0; N51WY7  
stack[++top]=data.length-1; YE[{Y(5;q  
9YVr9BM'K  
while(top>0){ Dfw%Bu  
int j=stack[top--]; K(heeZUt  
int i=stack[top--]; 7f\/cS^  
o>MB8[r  
pivotIndex=(i+j)/2; /[=U$=uH  
pivot=data[pivotIndex]; m?]= =9  
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SortUtil.swap(data,pivotIndex,j); uYMH5Om+i  
8c'5P  
file://partition )( W%Hmi  
l=i-1; H':0  
r=j; bw*D!mm,  
do{ C`b)}dY  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gM_MK8py  
SortUtil.swap(data,l,r); }-%:!*bLj  
} i?IV"*Ob1N  
while(l SortUtil.swap(data,l,r); q|S,^0cU  
SortUtil.swap(data,l,j); f1X]zk(=W  
2PQY+[jx  
if((l-i)>THRESHOLD){ 3im2 `n  
stack[++top]=i; ,N@N4<C]  
stack[++top]=l-1; BBHoD:l  
} ;`rz]7,*  
if((j-l)>THRESHOLD){ jGFDj"Y  
stack[++top]=l+1; jOU1F1  
stack[++top]=j; ;-d2~1$  
} y0\=F  
h45RwQ5Z  
} cBDOA<]r,  
file://new InsertSort().sort(data); != u S  
insertSort(data); Z8q*XpUH  
} Jk,}3Cr/  
/** Hg`2- Nl  
* @param data T74."Lo#  
*/ ({9P, D~2  
private void insertSort(int[] data) { -14~f)%NQ*  
int temp; mmBZ}V+&=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L^{wxOf&6E  
} {!37w[s~  
} 8Lh[>|~=  
} -< }#ImTN  
jU_#-<'r  
} 'jjJ[16"d  
1j\wvPLr  
归并排序: }(v <f*7=n  
S'(Hl}h!.  
package org.rut.util.algorithm.support; S\W&{+3  
c*Q6k<SKR  
import org.rut.util.algorithm.SortUtil; 3?-2~s3gp  
8npjQ;%4>  
/** h f9yK6  
* @author treeroot QIu!o,B  
* @since 2006-2-2 {14sI*b16  
* @version 1.0 CV7%ud]E  
*/ [Ontip  
public class MergeSort implements SortUtil.Sort{ u\P)x~-TM  
t0+D~F(g  
/* (non-Javadoc) ^ Mw=!n[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q-4#)EnW  
*/ T8\%+3e.  
public void sort(int[] data) { Aj "SSX!L  
int[] temp=new int[data.length]; 15wwu} X  
mergeSort(data,temp,0,data.length-1); HFTDea+#  
} TDY =!  
C5&+1VrP  
private void mergeSort(int[] data,int[] temp,int l,int r){ _Rey~]iJJ8  
int mid=(l+r)/2; =qFDrDt  
if(l==r) return ; Wm>AR? b  
mergeSort(data,temp,l,mid); /<it2=  
mergeSort(data,temp,mid+1,r); Zm#qW2a]P  
for(int i=l;i<=r;i++){ SCKpW#2dP{  
temp=data; hsHtLH+@  
} n8 e4`-cY  
int i1=l; .9KW| (uW  
int i2=mid+1; Nj|~3 *KO  
for(int cur=l;cur<=r;cur++){ z+F:_  
if(i1==mid+1) O:Ob{k  
data[cur]=temp[i2++]; bZi;jl  
else if(i2>r) `)_11ywZ  
data[cur]=temp[i1++]; iYl$25k/1  
else if(temp[i1] data[cur]=temp[i1++]; @d_;p<\l  
else V9<CeTl'  
data[cur]=temp[i2++]; (]*!`(_b  
} 2Wq/_:  
} u}BN)%`B  
hP26Bb1  
} :j( D&?ao  
Z=CY6Zu7  
改进后的归并排序: C;.+ kE  
S[L2vM)  
package org.rut.util.algorithm.support; d&5GkD.P  
B)L;ja  
import org.rut.util.algorithm.SortUtil; Dd$CN&Ca  
Oky9G C.a  
/** 0fU^  
* @author treeroot X]AbBzy  
* @since 2006-2-2 } P/ x@N  
* @version 1.0 DU.[Sp  
*/ R22P ol  
public class ImprovedMergeSort implements SortUtil.Sort { U&<w{cuA  
}doJ= lc  
private static final int THRESHOLD = 10; =OU]<%  
XqK\'8]\Mw  
/* t4CI+fqy  
* (non-Javadoc) PbN"+qM  
* 3+| {O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]z_C7Y"4BR  
*/ 1[r;  
public void sort(int[] data) { {qkd63 X  
int[] temp=new int[data.length]; ufWd) Q  
mergeSort(data,temp,0,data.length-1); }%I)bU  
} 9\[A%jp#K@  
"J (.dg]"  
private void mergeSort(int[] data, int[] temp, int l, int r) { m1(cN%DBd  
int i, j, k; NK0hT,_  
int mid = (l + r) / 2; bLpGrGJs  
if (l == r) ?{M!syD<  
return; 9dXtugp|  
if ((mid - l) >= THRESHOLD) a?QDf5C q  
mergeSort(data, temp, l, mid); 6 w:@i_2^  
else jt8% L[  
insertSort(data, l, mid - l + 1); ~ E|L4E  
if ((r - mid) > THRESHOLD) yNu%D$6u7  
mergeSort(data, temp, mid + 1, r); J>Uzd, /  
else i&dMX:fRd  
insertSort(data, mid + 1, r - mid); x#s=eeP1  
VIjsz42C  
for (i = l; i <= mid; i++) { 58 Rmq/6s  
temp = data; W9ewj:4\0  
} sCF7K=a  
for (j = 1; j <= r - mid; j++) { 6X.lncE@p  
temp[r - j + 1] = data[j + mid]; !rMl" Y[  
} 4$<-3IP,  
int a = temp[l]; ^>fjURR  
int b = temp[r]; 7,N>u8cTh  
for (i = l, j = r, k = l; k <= r; k++) { #Zy-X_r  
if (a < b) { )wwQv2E  
data[k] = temp[i++]; X[ o9^<  
a = temp; "x$RTuWA9  
} else { KGI0|Z]n~  
data[k] = temp[j--]; 7VwLyy  
b = temp[j]; P"WnU'+  
} ] x_WO_  
} Aa;s.:?  
} d.3O1TXK  
6hs2B5)+  
/** j!H\hj/]  
* @param data n/3gx4.g  
* @param l t"@: a Y"  
* @param i _,M:"3;Z  
*/ #j{!&4M  
private void insertSort(int[] data, int start, int len) { L('G1J}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,~_)Cf#CB  
} F+@E6I'g  
} a+CHrnU\;  
} $*{$90 Q  
} i-EFq@xl  
c=T^)~$$  
堆排序: @9QtK69  
{A2SG#}  
package org.rut.util.algorithm.support; 6*,8 H&  
sgn,]3AUq  
import org.rut.util.algorithm.SortUtil; {&Fh$H!  
wZECG-jr/  
/** b:}`O!UBw  
* @author treeroot ZTx~+'(  
* @since 2006-2-2  Y@S?0  
* @version 1.0 /WVnyz0  
*/ |WB<yA1  
public class HeapSort implements SortUtil.Sort{ MKdBqnM(F  
ZN2g(  
/* (non-Javadoc) X]Emz"   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3?vasL  
*/ QJ ueU%|  
public void sort(int[] data) { <~}t;ji  
MaxHeap h=new MaxHeap(); qG/a5i  
h.init(data); 7FVu [Qu  
for(int i=0;i h.remove(); ^#R-_I  
System.arraycopy(h.queue,1,data,0,data.length); n NI V(  
} _ID2yJ   
Oifu ?f<r  
private static class MaxHeap{ X"W%(x`w  
'wAO Y  
void init(int[] data){ =$g8"[4   
this.queue=new int[data.length+1]; 22|f!la8n  
for(int i=0;i queue[++size]=data; ~7!J/LHg  
fixUp(size); %3i/PIN  
} =De%]]>   
} g]V}azLr  
1@Bq-2OD4  
private int size=0; j}chU'i f  
W&]grG2/  
private int[] queue; Z3G>DF:$  
PiZt?r?5w|  
public int get() { -0Q:0wU  
return queue[1]; 0:**uion  
} :XMw="u=  
Lrz>0_Q  
public void remove() { 0*%j6*XDq9  
SortUtil.swap(queue,1,size--); 3R?7&oXvH  
fixDown(1); WIo^=?%  
} 1{%EQhNd  
file://fixdown 2;4Of~  
private void fixDown(int k) { qeCx.Z  
int j; ]do0{I%\eq  
while ((j = k << 1) <= size) { ";j/k9DE  
if (j < size %26amp;%26amp; queue[j] j++; ehXj.z  
if (queue[k]>queue[j]) file://不用交换 M"K$81  
break; aT F}  
SortUtil.swap(queue,j,k); QzIK580%t  
k = j; 4T6dju  
} vhEPk2wD,  
} g?M\Z";  
private void fixUp(int k) { v'.?:S&m  
while (k > 1) { $.(>Sj1  
int j = k >> 1; O@3EJkv  
if (queue[j]>queue[k]) 9c806>]U^  
break; @3[Z Q F  
SortUtil.swap(queue,j,k); pCA(>(  
k = j; V5K!u8T  
}  :XF;v  
} Wn24eld"x  
SPL72+S`,  
} N40.GL0s  
q:-8W[_  
} $qy%Q]  
'R~x.NM  
SortUtil: '@HWp8+  
d>  Y9g  
package org.rut.util.algorithm; [e ;K$  
:n>m">4  
import org.rut.util.algorithm.support.BubbleSort; XN]kNJX  
import org.rut.util.algorithm.support.HeapSort; :SSe0ZZ_6b  
import org.rut.util.algorithm.support.ImprovedMergeSort; J']1^"_'  
import org.rut.util.algorithm.support.ImprovedQuickSort; /wI$}X5o~  
import org.rut.util.algorithm.support.InsertSort; p0uQ>[NV0  
import org.rut.util.algorithm.support.MergeSort; 0<Px 2/  
import org.rut.util.algorithm.support.QuickSort; @g""*T1:$  
import org.rut.util.algorithm.support.SelectionSort; v%V$@MF  
import org.rut.util.algorithm.support.ShellSort; ^o|igyS9  
,g{`M]Ov  
/** TH)gW  
* @author treeroot G F,/<R#  
* @since 2006-2-2 w*Sl  
* @version 1.0 Fg Qd7p  
*/ 52K3N^RgR  
public class SortUtil { 6ndt1W z  
public final static int INSERT = 1; j$zw(EkN  
public final static int BUBBLE = 2; " 9 h]P^  
public final static int SELECTION = 3; vhZpYW8  
public final static int SHELL = 4; d/- f]   
public final static int QUICK = 5; <<v,9*h  
public final static int IMPROVED_QUICK = 6; vgHMVzxj  
public final static int MERGE = 7; +WK!}xZR  
public final static int IMPROVED_MERGE = 8; NXDdU^w7B  
public final static int HEAP = 9; SwG:?T!"}  
UL(R/yc  
public static void sort(int[] data) { //>f#8Ho  
sort(data, IMPROVED_QUICK); +K;(H']Z<-  
} `pm6Ts{,  
private static String[] name={ A%oHx|PD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a7nbGqsx  
}; (<(8(} x  
2>.B*P  
private static Sort[] impl=new Sort[]{ r.[!n)*  
new InsertSort(), v l2!2X  
new BubbleSort(), hFZ7{pj  
new SelectionSort(), UbJ_'>hK6  
new ShellSort(), }!(cm;XA"  
new QuickSort(), 0~R0)Q,  
new ImprovedQuickSort(), >Rjk d>K3  
new MergeSort(), O@'/B" &  
new ImprovedMergeSort(), \NS\>Q+d  
new HeapSort() S*IF/ fu  
}; ]gHw;ry  
%-i2MK'A  
public static String toString(int algorithm){ QgC  
return name[algorithm-1]; jw5Bbyk  
} W<xu*U(A  
)O"5dF1l  
public static void sort(int[] data, int algorithm) { ^4O1:_|G  
impl[algorithm-1].sort(data); 4At%{E  
} Obrv5 %'  
V3xC"maA@  
public static interface Sort { gx#xB8n  
public void sort(int[] data); `3SY~&X  
} W7S`+Pq  
7P?z{x':T  
public static void swap(int[] data, int i, int j) { 0tC+?  
int temp = data; GG5wiN*2S  
data = data[j]; #<S+E7uTs  
data[j] = temp;  4EJ  
} nxKV7d@R  
} votv rZ=  
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