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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。 u0s25JY.%  
插入排序: >j%4U*  
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package org.rut.util.algorithm.support; L/39<&W  
F\)?Ntj)>@  
import org.rut.util.algorithm.SortUtil; `A\|qH5`W  
/** h#e((j3-2Z  
* @author treeroot (^U 8wit/  
* @since 2006-2-2 \DgWp:|  
* @version 1.0 :!cNkJa  
*/ x_k @hGSC  
public class InsertSort implements SortUtil.Sort{ Z7$"0%  
WxgA{q7:  
/* (non-Javadoc) JSCZX:5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;7 F'xz"  
*/ EN\ uX!  
public void sort(int[] data) { (mR ;MC  
int temp; v 7g?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DJ]GM|?  
} 5N5Deb#V  
} V1d{E 0lM  
} %F.^cd"  
RaX :&PE  
}  1OwVb  
#P^cR_|\  
冒泡排序: &3_S+.JO  
^! r<-J  
package org.rut.util.algorithm.support; xGBp+j1H  
vgyv~Px]AW  
import org.rut.util.algorithm.SortUtil; +eIX{J\s  
$Fr>'H+i  
/** dyyGt }}5f  
* @author treeroot k~|5TO  
* @since 2006-2-2 yE3l%<;q  
* @version 1.0 av; ~e<  
*/ @`D`u16]i  
public class BubbleSort implements SortUtil.Sort{ 7hq$vI%0  
N H$!<ffz  
/* (non-Javadoc) 5@3hb]J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ej^pFo  
*/ k2@|fe  
public void sort(int[] data) { v;_k*y[VV$  
int temp; l`V^d   
for(int i=0;i for(int j=data.length-1;j>i;j--){ )LRso>iOO  
if(data[j] SortUtil.swap(data,j,j-1); 0Xe?{!@a  
} :tTP3 t5  
} wq6.:8Or-]  
} [<!4 a  
} IMF9eS{L  
'xn3g;5  
} Q"Ur*/-U  
s6F^z\6  
选择排序: Mu>WS)1lS  
2 yY.rs  
package org.rut.util.algorithm.support; ndB [f  
B}|(/a@*  
import org.rut.util.algorithm.SortUtil; qz]g4hS  
nN|1cJ'.Fk  
/** `{ 6K~(  
* @author treeroot jeLC)lQ*  
* @since 2006-2-2 {YT@$K]w,  
* @version 1.0 "6} #65  
*/ +kdZfv>  
public class SelectionSort implements SortUtil.Sort { mY& HK)  
[$+N"4  
/* fd CN?p[_  
* (non-Javadoc) Ac,Qj`'V  
* uLK4tQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0.4Q-?J  
*/ ] 1:pnd  
public void sort(int[] data) { ML= :&M!ao  
int temp; OqW (C  
for (int i = 0; i < data.length; i++) { UwQyAD]Ht  
int lowIndex = i; jy kY8;4  
for (int j = data.length - 1; j > i; j--) { 3R|C$+Sc  
if (data[j] < data[lowIndex]) { 6t0-u~  
lowIndex = j; )8244;  
} *^WY+DV  
} 017(I:V?(:  
SortUtil.swap(data,i,lowIndex); =w#sCy  
} uz8Y)b  
} 1|8<!Hx#-  
x*}*0).  
} omEnIfQSO  
5kju{2`GF  
Shell排序: 99]&Xj  
CKau\N7T  
package org.rut.util.algorithm.support; k5X& |L/  
rERHfr`OU  
import org.rut.util.algorithm.SortUtil; ns/L./z  
5[\LQtM  
/** Bl6>y/  
* @author treeroot k#Bq8d  
* @since 2006-2-2 }c1?:8p  
* @version 1.0 r:QLO~l/  
*/ %I 3D/!%  
public class ShellSort implements SortUtil.Sort{ 41'|~3\X  
yo=0Ov  
/* (non-Javadoc) l^,"^ vz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j1 Q"s(  
*/ ^]A,Q%1q^  
public void sort(int[] data) { $^XCI%DH  
for(int i=data.length/2;i>2;i/=2){ {G^f/%  
for(int j=0;j insertSort(data,j,i); P+j5_V{\b  
} q4wS<, 3  
} XzH"dDAVE  
insertSort(data,0,1); ]= EYju@  
} @UG%B7  
o[ua$+67E  
/** @|hn@!YK  
* @param data f(r=S Xa*  
* @param j oTjsiXS  
* @param i ;xKPa6`E  
*/ |@Mx? (  
private void insertSort(int[] data, int start, int inc) { K:3u/C`  
int temp; X":T>)J-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I6B`G Im5  
} 8U$(9X  
} {*jo,<4ee  
} o8A1cb4<T  
D+u#!t[q  
} g AZe&"K  
j4fv-{=$  
快速排序: c'gV  
Z<2j#rd  
package org.rut.util.algorithm.support; 3{j&J-  
hfBZ:es+  
import org.rut.util.algorithm.SortUtil; NUvHY:  
R3`h$`G  
/** *=p[;V  
* @author treeroot rbEUq.Yk]~  
* @since 2006-2-2 >Y\$9W=t  
* @version 1.0 j0F'I*Z3  
*/ P nxxW?  
public class QuickSort implements SortUtil.Sort{ ff3HR+%M  
0:SR29(p1  
/* (non-Javadoc) 3cH`>#c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MkCq$MA  
*/  erW[q  
public void sort(int[] data) { s?g`ufF.t  
quickSort(data,0,data.length-1); {@7{!I|eD  
} d>f.p"B.gj  
private void quickSort(int[] data,int i,int j){ 0kp#+&)+  
int pivotIndex=(i+j)/2; Q-qM"8I  
file://swap .e,(}_[[<  
SortUtil.swap(data,pivotIndex,j); A3#^R%2)W  
bx5f\)  
int k=partition(data,i-1,j,data[j]); @-ms_Z  
SortUtil.swap(data,k,j); NPFrn[M$  
if((k-i)>1) quickSort(data,i,k-1); wj$J} F  
if((j-k)>1) quickSort(data,k+1,j); 5jb/[i^V  
U~)i&":sN  
} \~O}V~wE  
/** XC D&Im  
* @param data -hpJL\ng  
* @param i Q#2gjR r  
* @param j ;<9dND  
* @return (i"@{[IP  
*/ WN+D}z]  
private int partition(int[] data, int l, int r,int pivot) { c@]_V  
do{ sr*3uI-)L  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m/`"~@}&  
SortUtil.swap(data,l,r); rphfW:  
} zxV,v*L)  
while(l SortUtil.swap(data,l,r); rz  
return l; b;;C><  
} Cqy)+x_OQ,  
VX`E7Sf!}  
} iLyJ7zby  
6u'+#nm  
改进后的快速排序: X4D>  
8!T6N2O6d  
package org.rut.util.algorithm.support; aUBGp: (  
x<S?"  
import org.rut.util.algorithm.SortUtil; 5dPPm%U{  
lg(*:To3B  
/** .YT&V  
* @author treeroot =y>g:}G7  
* @since 2006-2-2 0CTUcVM#9  
* @version 1.0 C]xKdPQj%  
*/ 9MmAoLm  
public class ImprovedQuickSort implements SortUtil.Sort { KqE5{ q  
BJ]4j-^o  
private static int MAX_STACK_SIZE=4096; bi^Xdu  
private static int THRESHOLD=10; k!^Au8Up?  
/* (non-Javadoc) BM@:=>ypQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LWpM-eW1q  
*/ /tu+L6  
public void sort(int[] data) { has \W\(  
int[] stack=new int[MAX_STACK_SIZE]; ^F*G  
{}#W~1`  
int top=-1; +] .Zs<  
int pivot; :+G1=TuXw~  
int pivotIndex,l,r; BfcpB)N&.K  
_I&];WM\  
stack[++top]=0; QNk\y@yKw  
stack[++top]=data.length-1; .BWCGb2bH  
-j6&W`  
while(top>0){ ^x:%_yGY  
int j=stack[top--]; \}:&Hl+  
int i=stack[top--]; f*{~N!g  
RkrZncBgV<  
pivotIndex=(i+j)/2; z&3in  
pivot=data[pivotIndex]; Q}A*{9#|  
SXA`o<Ma  
SortUtil.swap(data,pivotIndex,j); AaVj^iy/X  
L ~,x~sLd  
file://partition mX2(SFpJar  
l=i-1; /]mfI&l+9  
r=j; ~ PO)>;  
do{ <Ag`pZ<s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RoG `U  
SortUtil.swap(data,l,r); c']3N  
} z^KMYvH g  
while(l SortUtil.swap(data,l,r); zB8 @Wl  
SortUtil.swap(data,l,j); " ^t3VjN  
u+&t"B  
if((l-i)>THRESHOLD){ &at^~ o  
stack[++top]=i; }i"\?M  
stack[++top]=l-1; xUiSAKrcM  
} 4490l"  
if((j-l)>THRESHOLD){  &Ow[  
stack[++top]=l+1; z/B[quSio  
stack[++top]=j; K KPQ[3g  
} Y6>@zznk  
#LGAvFA*_F  
} fO;#;p.  
file://new InsertSort().sort(data); (zVT{!z  
insertSort(data); v*Fr #I0U  
} * mzJ)4A  
/**  Stzv  
* @param data Z|8oD*,  
*/ P|>pm]>C  
private void insertSort(int[] data) { 4H<@da}  
int temp; .ykCmznf*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u@;6r"8q  
} LQ7.RK  
} Xx=jN1=,  
} U]aH4 N  
K>"]*#aBv  
} ?"d25LyN  
WSt&?+Y  
归并排序: {hS9FdWA;  
d3$*z)12`  
package org.rut.util.algorithm.support; {z4v_[-2CF  
<6 LpsM}  
import org.rut.util.algorithm.SortUtil; XIgGE)n  
0Y%u[i/  
/** )} I>"n  
* @author treeroot $IM}d"/9  
* @since 2006-2-2 q0Hor   
* @version 1.0 0gR!W3dh  
*/ 8"fZ>XQ  
public class MergeSort implements SortUtil.Sort{ tp6-j`7u  
Zj(2$9IU  
/* (non-Javadoc) |;G9K`8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jp~C''Sj  
*/ #s4v0auK  
public void sort(int[] data) { #- l1(m  
int[] temp=new int[data.length]; @w8MOT$  
mergeSort(data,temp,0,data.length-1); zlUXp0W  
} lK}W%hzU  
Z{9 mZ lIy  
private void mergeSort(int[] data,int[] temp,int l,int r){ (?G?9M#7_  
int mid=(l+r)/2; -3z$~ {  
if(l==r) return ; |#y+iXTJ   
mergeSort(data,temp,l,mid); z'FpP  
mergeSort(data,temp,mid+1,r); _'W en  
for(int i=l;i<=r;i++){ J%Cn  
temp=data; @v#]+9F  
} zA~aiX  
int i1=l; MJ=(rp=YU9  
int i2=mid+1; jD`p;#~8  
for(int cur=l;cur<=r;cur++){ kp{q5J6/  
if(i1==mid+1) ;tBc&LJ?  
data[cur]=temp[i2++]; Lrr1) h  
else if(i2>r) {^Y0kvnd  
data[cur]=temp[i1++]; *!~jHy8F  
else if(temp[i1] data[cur]=temp[i1++]; O&]P u5  
else #RJFJb/  
data[cur]=temp[i2++]; 4axc05  
} 7U@;X~c  
} U_X/  
w7(jSPB  
} P?.j wI  
lY.{v]i }  
改进后的归并排序: c]u^0X?&  
"JH / ODm  
package org.rut.util.algorithm.support; o 0-3[W'x<  
da'7* &/  
import org.rut.util.algorithm.SortUtil; QR.]?t;1  
{JJq/[j  
/** Y &G]M  
* @author treeroot \Q CH.~]  
* @since 2006-2-2 I6jDRC0<  
* @version 1.0 ?3I93Bt7  
*/ F!LVyY"w  
public class ImprovedMergeSort implements SortUtil.Sort { 8 2EH'C  
l]bCt b%_  
private static final int THRESHOLD = 10; ogOUrJ}P  
QSaJb?I  
/* wDL dmrB  
* (non-Javadoc) <9BM%  
* jt*VD>ji  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B%.XWW$  
*/ J:N4F.o&K  
public void sort(int[] data) { K+`$*vS~ws  
int[] temp=new int[data.length]; XOdkfmc+s'  
mergeSort(data,temp,0,data.length-1); ~> xVhd  
} =:4vRq [  
^:(:P9h  
private void mergeSort(int[] data, int[] temp, int l, int r) { b <1k$0J6  
int i, j, k; nB8JdM2h{  
int mid = (l + r) / 2; -F]0Py8(  
if (l == r) FL,av>mV  
return; 5bfd8C  
if ((mid - l) >= THRESHOLD) uB`H9  
mergeSort(data, temp, l, mid); wva| TZ  
else 5ree3 quh  
insertSort(data, l, mid - l + 1); T!iRg=<bz  
if ((r - mid) > THRESHOLD) snl$v  
mergeSort(data, temp, mid + 1, r); voD0 u  
else >h[ {_+  
insertSort(data, mid + 1, r - mid); MPn 6sf9M  
$69ef[b  
for (i = l; i <= mid; i++) { |?kZfr&9q  
temp = data; miq"3  
} gvoo1 Sa  
for (j = 1; j <= r - mid; j++) { ;&A%"8o  
temp[r - j + 1] = data[j + mid]; e%B;8)7  
} ~&UfnO  
int a = temp[l]; tW=,o&C=  
int b = temp[r]; +Vf39}8  
for (i = l, j = r, k = l; k <= r; k++) { _:0)uR LS  
if (a < b) { a2z1/Nh  
data[k] = temp[i++]; 0zL7$Q#c  
a = temp; ",pN.<F9O  
} else { ql +tqgo  
data[k] = temp[j--]; +1R qo  
b = temp[j]; ;)SWUXa;{  
} LK?V`J5wY  
} Q)H1\  
} M.[A%_|P  
r N.<S[  
/** P XH"%vVF  
* @param data nVK`H@5fw  
* @param l W{{{c2 .  
* @param i VkD8h+)  
*/ C4`u3S  
private void insertSort(int[] data, int start, int len) { ,^>WC G  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q3~RK[OCq  
} {e3XmVAI  
} ]t23qA@^2  
} 2&k5X-Y  
} ~I_v {  
_ i-(` 5  
堆排序: IIrXI8'}  
w|;kL{(W  
package org.rut.util.algorithm.support; 7wm9S4+|  
e@GR[0~  
import org.rut.util.algorithm.SortUtil; \N?,6;%xB  
)]^xy&:|  
/** .ZB/!WiF  
* @author treeroot (t{m(;/  
* @since 2006-2-2 )Q!3p={S*  
* @version 1.0 */kX|Sur  
*/ .&Vy o<9Ck  
public class HeapSort implements SortUtil.Sort{ Wb|xEwqd`  
"]"!"#aMv  
/* (non-Javadoc) hlgBx~S[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |PI]v`[  
*/ z ]d^%>Ef  
public void sort(int[] data) { }`SXUM_sD`  
MaxHeap h=new MaxHeap(); ] VN4;R  
h.init(data); LvtZZX6!  
for(int i=0;i h.remove(); s[ CnJZ\q  
System.arraycopy(h.queue,1,data,0,data.length); e/h2E dY  
} ?;//%c8,.  
TDMyZ!d  
private static class MaxHeap{ WC?}a^ 8  
'A|OVyH  
void init(int[] data){ H,? )6pZ  
this.queue=new int[data.length+1]; 1VH$l(7IQ  
for(int i=0;i queue[++size]=data; RZV8{  
fixUp(size); nhUL{ER  
} ^J([w~&  
} ~(|~Ze>  
2K 8?S  
private int size=0; o*L#S1yL  
e-taBrl;  
private int[] queue; .hD 2g"  
+>F #{b  
public int get() { ,sM>{NK 9R  
return queue[1]; ,w+}Evp])  
} %?4 G^f  
HfF4BQxm  
public void remove() { #*g.hL<  
SortUtil.swap(queue,1,size--);  `#m>3  
fixDown(1); zeXMi:X  
} )ny,vcU]  
file://fixdown Rj/9\F3H  
private void fixDown(int k) { T}?vp~./   
int j; q0}?F  
while ((j = k << 1) <= size) { mNvK|bTUT  
if (j < size %26amp;%26amp; queue[j] j++; #2F 6}  
if (queue[k]>queue[j]) file://不用交换 V<#E!MG  
break; " -Ie  
SortUtil.swap(queue,j,k); ~+y0UEtq7  
k = j; /!r#=enG7  
} ) LA^j|Y}  
} h%hE$2  
private void fixUp(int k) { ATeXOe  
while (k > 1) { W[dMf!(  
int j = k >> 1; `mI% Se  
if (queue[j]>queue[k]) ]wMp`}$b@L  
break; }> 51oBgk_  
SortUtil.swap(queue,j,k); e<wRA["  
k = j; 0P5!fXs*  
} 9}4EW4  
} )6S;w7  
"dKYJ&$  
} $J~~.PUXQ  
+Oae3VFf;  
} >gt_C'  
 9"@P.8_  
SortUtil: jJpSn[{  
r "^ {?0  
package org.rut.util.algorithm; I92c!`{  
=,aWO7Pz  
import org.rut.util.algorithm.support.BubbleSort; a?+Ni|+  
import org.rut.util.algorithm.support.HeapSort; !f(aWrw7e6  
import org.rut.util.algorithm.support.ImprovedMergeSort; :Rs% (Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; h=q%h8  
import org.rut.util.algorithm.support.InsertSort; dh7PpuN{  
import org.rut.util.algorithm.support.MergeSort; !U,^+"l'GP  
import org.rut.util.algorithm.support.QuickSort; -jZP&8dPH  
import org.rut.util.algorithm.support.SelectionSort; /nK)esB1L  
import org.rut.util.algorithm.support.ShellSort; !Q,A#N(  
S=Ihg  
/** @~!1wPvF`I  
* @author treeroot 5-277?  
* @since 2006-2-2 >.D0McQg  
* @version 1.0 ;w(]z  
*/ + *YGsM`E9  
public class SortUtil { hIj[#M&6  
public final static int INSERT = 1; %j].' ;  
public final static int BUBBLE = 2; QK5y%bTSA  
public final static int SELECTION = 3; 728}K^7:  
public final static int SHELL = 4; iL-I#"qT,  
public final static int QUICK = 5; lR!Sdd} -  
public final static int IMPROVED_QUICK = 6; (% fl  
public final static int MERGE = 7; Nk-biD/J  
public final static int IMPROVED_MERGE = 8; mx#H+:}&r  
public final static int HEAP = 9; qAH@)}  
0Fw0#eE  
public static void sort(int[] data) { ;Yrg4/Ipa  
sort(data, IMPROVED_QUICK); Mk=;UBb$X  
} L3Leb%,!  
private static String[] name={ :E|HP#iwu  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1i}Rc:  
}; mT.p-C  
O&# bC  
private static Sort[] impl=new Sort[]{ <v?9:}  
new InsertSort(), >4:W:;R  
new BubbleSort(), _tR%7%3*  
new SelectionSort(), "y>\ mC  
new ShellSort(), 5Wj+ey^ ^w  
new QuickSort(), ]MkZ1~f7  
new ImprovedQuickSort(), '676\2.  
new MergeSort(), %Fc, $ =  
new ImprovedMergeSort(), 8Ek<J+& |I  
new HeapSort() #e.2m5T  
}; Na^1dn  
khl(9R4a  
public static String toString(int algorithm){ 2,nKbE9*  
return name[algorithm-1]; :&= TE2  
} L~1u?-zu  
>4a@rT/  
public static void sort(int[] data, int algorithm) { .>0e?A4,5?  
impl[algorithm-1].sort(data); A>6 b 6  
} N\<RQtDg  
[y y D-  
public static interface Sort { Vw*;xek?  
public void sort(int[] data); XD`QU m  
} 4BG6C'`%  
L<>;E  
public static void swap(int[] data, int i, int j) { tb7Wr1$<  
int temp = data; #Zpp*S55  
data = data[j]; (Rvke!"B  
data[j] = temp; Wh%qvV6]  
} SGW2'  
} {& G7 Xa  
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