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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。 Qc#<RbLL  
插入排序: ; S7 %  
b/cc\d<  
package org.rut.util.algorithm.support; T5?@'b8F6  
`=0}+  
import org.rut.util.algorithm.SortUtil; Q+'mBi}  
/** +!Q<gWb  
* @author treeroot ))V)]+  
* @since 2006-2-2 [R*UPa  
* @version 1.0 g0GC g  
*/ {r Q6IV3=  
public class InsertSort implements SortUtil.Sort{ #]<j.Fc`  
/{ Lo0  
/* (non-Javadoc) d]6.$"\" p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &l2oyQEF)  
*/ }md[hiJ  
public void sort(int[] data) { \E1[ /  
int temp; 7y.$'<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ce!0Ws+  
} wZ/Zc} .  
} H(9%SP@[c  
} GhpVi<FL  
T<Y^V  
} ' _Ij9{M  
ukb2[mb*u  
冒泡排序:  +LeZjA[  
Cfqgu;m  
package org.rut.util.algorithm.support; XcB!9AIO  
PB00\&6H  
import org.rut.util.algorithm.SortUtil; #8iRWm0*6  
"4"gHs  
/** d?^bCf+<  
* @author treeroot {eA0I\c(C  
* @since 2006-2-2 b!Pz~faXD  
* @version 1.0 nylrF"'e  
*/ mlc0XDS%  
public class BubbleSort implements SortUtil.Sort{ |n3fAN  
tQE=c 7/M  
/* (non-Javadoc) 2iC7c6hc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _]:wltPv  
*/ L;$Gn"7~  
public void sort(int[] data) { xR `4<  
int temp; ^[6eo8Ck>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b$\3Y'":  
if(data[j] SortUtil.swap(data,j,j-1); 3* C9;Q}  
} |pxM8g1w  
} L]I ;{Y  
} r(-`b8ZE  
} h}r64<Y2{  
?4v&TB@  
} Jk=E"I6  
:E'uV" j%  
选择排序: ]FV,}EZ  
k)j, ~JH  
package org.rut.util.algorithm.support; W@U<GF1  
w:%3]2c  
import org.rut.util.algorithm.SortUtil; `%_yRJd|;  
gFlUMfKh  
/** `Mx&,;x  
* @author treeroot O2./?Ye  
* @since 2006-2-2 A3D"b9<D  
* @version 1.0 <nDuN*|  
*/ >__t 2  
public class SelectionSort implements SortUtil.Sort { uj#bK 7  
5%M 'ewu  
/*  l%XuYYQ  
* (non-Javadoc) 5Y77g[AX2-  
* {`~uBz+dJq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W&>ONo6ki  
*/ r5y p jT^  
public void sort(int[] data) { GBnf]A,^ @  
int temp; nv>|,&;  
for (int i = 0; i < data.length; i++) { j_L1KB*  
int lowIndex = i; &`"Q*N2{  
for (int j = data.length - 1; j > i; j--) { ^1y (N>W  
if (data[j] < data[lowIndex]) { 1_$y bftS  
lowIndex = j;  _0^f  
} %%`Q5I  
} :uwB)G  
SortUtil.swap(data,i,lowIndex); sk* AlSlM  
} &Luq}^u  
} n<RvL^T=  
m/}(dT;  
}  g=W1y  
$OEhdz&Fi  
Shell排序: Q'-g+aN  
:: IAXGH)  
package org.rut.util.algorithm.support; 2}:{}pw  
cb|cYCo5  
import org.rut.util.algorithm.SortUtil; w0W9N%f#=  
R%l6+Okr  
/**  %T9'dcM  
* @author treeroot fsd,q?{a:  
* @since 2006-2-2 J3/2>N]/}  
* @version 1.0 +M@p)pyu  
*/ o2p;$W4`  
public class ShellSort implements SortUtil.Sort{ qz]b8rX  
` s [77V>  
/* (non-Javadoc) m"3gTqG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D}4*Il?  
*/ C'5b)0km  
public void sort(int[] data) { xF|P6GXg  
for(int i=data.length/2;i>2;i/=2){ up`.#GWm  
for(int j=0;j insertSort(data,j,i); DVNx\t  
} 66RqjP '2  
} |S0]qt?  
insertSort(data,0,1); )0F\[Jl}  
} q]PeS~PjF\  
gZkjh{rQ  
/** r(qAe{  
* @param data d3% 1 P)  
* @param j E1'| ;}/  
* @param i Th"0Cc)  
*/ )1de<# qM  
private void insertSort(int[] data, int start, int inc) { $:&?!>H  
int temp; 2@!Ou$W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U9N1 )3/u  
} p\xi5z  
} h$\+r<  
} /m#!<t7  
u~ %xU~v  
} x.gRTR`7(  
M? 7CBqZ  
快速排序: kl4u]MyL#  
f~bZTf  
package org.rut.util.algorithm.support; <hG] f%  
#L,>)XkjS  
import org.rut.util.algorithm.SortUtil; NR98I7  
a3i;r M2  
/** gie.K1@|  
* @author treeroot VE_%/Fs,  
* @since 2006-2-2 "XvM1G&s`  
* @version 1.0 K8>-%ns  
*/ fK-tvP0}*  
public class QuickSort implements SortUtil.Sort{ lawjGI  
e[5= ?p@|  
/* (non-Javadoc) XLG6f(B=F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {~cG'S Y%  
*/ z 'iAj  
public void sort(int[] data) { -s ]  
quickSort(data,0,data.length-1); JQ9JWu%a  
} "l83O8 L  
private void quickSort(int[] data,int i,int j){ 2y_R05O0  
int pivotIndex=(i+j)/2; ykq9]Xqhv  
file://swap >$^v@jf  
SortUtil.swap(data,pivotIndex,j); =^nb-9.  
e G8Zn<:s  
int k=partition(data,i-1,j,data[j]); RDFOUqS  
SortUtil.swap(data,k,j); X9:4oMux7  
if((k-i)>1) quickSort(data,i,k-1); g7>p,  
if((j-k)>1) quickSort(data,k+1,j); ;{@jj0h;  
N\ Nwmx  
} c5KJ_Nfi  
/** a?^xEye  
* @param data CuS"Wj  
* @param i A4C4xts]N  
* @param j IdY\_@$ v  
* @return hSBR9g  
*/ 49/j9#hr  
private int partition(int[] data, int l, int r,int pivot) { +i %,+3#6  
do{ u<}PcI.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ux8:   
SortUtil.swap(data,l,r); [1Os.G2  
} ^M51@sXI7  
while(l SortUtil.swap(data,l,r); (YOp  
return l; f76bEe/B9  
} 0u,OW  
fe,A\W&8  
} $ U~3$*R  
fi/[(RBG  
改进后的快速排序: Kzv*`  
sg=mkkD!g  
package org.rut.util.algorithm.support; gWqO5C~h  
fF~3"!1#\I  
import org.rut.util.algorithm.SortUtil; ;'\#+GZ9p  
x{Gdr51%  
/** xKo l  
* @author treeroot ue YBD]3'  
* @since 2006-2-2 AdCi*="m  
* @version 1.0 t&GjW6]W  
*/ ch^tq",1>  
public class ImprovedQuickSort implements SortUtil.Sort { ;,z[|"y  
Glt%%TJb   
private static int MAX_STACK_SIZE=4096; $d@_R^]X  
private static int THRESHOLD=10; #<^ngoOj  
/* (non-Javadoc) Ax'jNol  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ec6J*b  
*/ ."8bW^:  
public void sort(int[] data) { W ix/Az  
int[] stack=new int[MAX_STACK_SIZE]; &n|S:"B  
Y<A593  
int top=-1; h3B s  
int pivot; ISp'4H7R+N  
int pivotIndex,l,r; G:n,u$2a<  
/^BaQeH?R  
stack[++top]=0; qQL]3qP  
stack[++top]=data.length-1; c(]NpH in  
!W^b:qjJ  
while(top>0){ D$ >gAv  
int j=stack[top--]; vCPiT2G  
int i=stack[top--]; hH=H/L_Z  
y 093-  
pivotIndex=(i+j)/2; - %ul9}.  
pivot=data[pivotIndex]; `2 vv8cg^  
_A8x{[$  
SortUtil.swap(data,pivotIndex,j); K >-)O=$s  
dc ]+1 A  
file://partition 0Q2P"1>KT/  
l=i-1; 09_L^'`  
r=j; Wq4>!|  
do{ (|(#W+l~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q t!X<.  
SortUtil.swap(data,l,r); evbqBb21b  
} W?*]' 0  
while(l SortUtil.swap(data,l,r); $#bgt   
SortUtil.swap(data,l,j); #U46Au  
LuLnmnmB  
if((l-i)>THRESHOLD){ g?(h{r`  
stack[++top]=i; k8]uy2R6}  
stack[++top]=l-1; NlBnV  
} 9c /&+j  
if((j-l)>THRESHOLD){ \xQ10\u  
stack[++top]=l+1; ~y#jq,i/  
stack[++top]=j; /& qN yo  
} f*+eu @  
|"7^9(  
} QasUgZ  
file://new InsertSort().sort(data); 5CSihw/5  
insertSort(data); -Qt>yzD3  
} Z#n!=k TTm  
/** D~KEjz!bQ  
* @param data hXvg<Rf  
*/ ?5%0zMC  
private void insertSort(int[] data) { m{U+aqAQK  
int temp; JWu^7}@~=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^>g7Kg"0  
} B/*`u  
} r%*UU4xvB  
} z}Qt6na]-  
]cz*k/*0  
} fvW7a8k3  
Bf&,ACOf  
归并排序: WVP^C71  
gC}r$ZB(  
package org.rut.util.algorithm.support; oGK 1D  
JN9 W:X.  
import org.rut.util.algorithm.SortUtil; 7 TTU&7l~  
pa7Iz^i  
/** ) o)k~6uT  
* @author treeroot b*-g@S  
* @since 2006-2-2 +) pO82  
* @version 1.0 )czuJ5  
*/ s^ t1T&  
public class MergeSort implements SortUtil.Sort{ p4 \r`  
Z#-:zD7_  
/* (non-Javadoc) DI P(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a0vg%Z@!  
*/ t@a2@dX|  
public void sort(int[] data) { V b=Oz  
int[] temp=new int[data.length]; YS}uJ&WoF  
mergeSort(data,temp,0,data.length-1); QzjLKjl7p4  
} JN{.-k4Ha  
g$++\%k&  
private void mergeSort(int[] data,int[] temp,int l,int r){ NH?q/4=I0W  
int mid=(l+r)/2; ?a8 o.&`l  
if(l==r) return ; yQ33JQr  
mergeSort(data,temp,l,mid); a88(,:t  
mergeSort(data,temp,mid+1,r); BE54^U  
for(int i=l;i<=r;i++){ @O;gKFx  
temp=data; {X=gjQ9  
} qO yg&]7  
int i1=l; P= e3f(M2  
int i2=mid+1; =Q % F~  
for(int cur=l;cur<=r;cur++){ IF<?TYy=3B  
if(i1==mid+1) D[.;-4"_  
data[cur]=temp[i2++]; {Z>OAR#   
else if(i2>r) +V"t't7  
data[cur]=temp[i1++]; 8vhg{L..  
else if(temp[i1] data[cur]=temp[i1++]; ail%#E8  
else &dqC =oK]  
data[cur]=temp[i2++]; 82w='~y  
} 99'e)[\  
} 3y}0J @  
#d+bld\  
} N# Ru `;  
80X #V  
改进后的归并排序: k79" xyXX  
Kh)SgJ3B@  
package org.rut.util.algorithm.support; <NV[8B#k]  
9{gY|2R_  
import org.rut.util.algorithm.SortUtil; 6}aIb.j  
xWY%-CWY.  
/** 95.m^~5  
* @author treeroot CJ*8x7-t  
* @since 2006-2-2 Z J:h]  
* @version 1.0 D49yV`  
*/ O|t@p=]  
public class ImprovedMergeSort implements SortUtil.Sort { j@jaFsX |  
S>W_p~ @  
private static final int THRESHOLD = 10; nf,R+oX  
CzP?J36W^  
/* icq!^5BzL  
* (non-Javadoc) nLn3kMl4  
* b' 1%g}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y{>d&M|  
*/ 5iE-$,7#L  
public void sort(int[] data) { &|;XLRHP}  
int[] temp=new int[data.length]; VdrqbZ   
mergeSort(data,temp,0,data.length-1); OK{_WTCe>  
} !d@qT.  
]>E)0<t  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?0%yDq1_  
int i, j, k; s?=v@|vz)  
int mid = (l + r) / 2; #0K122oY  
if (l == r) oyQp"'|N  
return; jf_xm=n  
if ((mid - l) >= THRESHOLD)  .;ptgX  
mergeSort(data, temp, l, mid); 0PiD<*EA  
else +!dWQ=W  
insertSort(data, l, mid - l + 1); Qh4@Nl#Ncf  
if ((r - mid) > THRESHOLD) ~x:\xQti  
mergeSort(data, temp, mid + 1, r); Ks|qJ3;  
else DnbT<oEL  
insertSort(data, mid + 1, r - mid); [If%+mHdU  
-;5WMX 6  
for (i = l; i <= mid; i++) { AE1EZ#  
temp = data; (*{Y#XD{  
} I9xQ1WJc`  
for (j = 1; j <= r - mid; j++) { 'CE3 |x\%K  
temp[r - j + 1] = data[j + mid]; EbEQ@6t  
} rkdf htpI  
int a = temp[l]; 1P (5+9"s  
int b = temp[r]; aS ]bTYJ'  
for (i = l, j = r, k = l; k <= r; k++) { z8HOig?  
if (a < b) { 2g>4fZ  
data[k] = temp[i++]; a[ Pyxx_K  
a = temp; E-P;3lS~  
} else { .M3]\I u  
data[k] = temp[j--]; n< npJ*  
b = temp[j]; I[mlQmwsL.  
} }m!L2iK4qk  
} q)Qd+:a7{  
} &e2|]C4  
+n]z'pijb  
/** nE_g^  
* @param data u4 ##*m  
* @param l U^ bF}4m  
* @param i %Vf3r9 z  
*/ -4  ~(*  
private void insertSort(int[] data, int start, int len) { TvV_Tz4e  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yV;_]_EO  
} 60 D0z  
} -0Ws3  
} a: C h"la  
} 8SV.giG;  
S;pKL,d>r  
堆排序: a?_!  
{bQi z  
package org.rut.util.algorithm.support; xa7~{ E,  
 y5"b(nb  
import org.rut.util.algorithm.SortUtil; d D%Sbb  
j2@19YXe@  
/** /Y NV  
* @author treeroot @|3PV  
* @since 2006-2-2 woQ UrO(  
* @version 1.0 1N8:,bpsT  
*/ dvPK5+0W?  
public class HeapSort implements SortUtil.Sort{ 2n/cq K   
3aD\J_  
/* (non-Javadoc) 0l.\KF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qfRsp rRI"  
*/ `7.(dn>WL0  
public void sort(int[] data) { BZ2frG\0&I  
MaxHeap h=new MaxHeap(); 0rnne L  
h.init(data); Z/ Vb_  
for(int i=0;i h.remove(); Me*woCos'  
System.arraycopy(h.queue,1,data,0,data.length); ~"eQPTd  
} XsOz {?G  
d7g3VF<j  
private static class MaxHeap{ GJpQcse%  
uT")j,tz  
void init(int[] data){ }f/xMp-Y  
this.queue=new int[data.length+1]; FLWQY,  
for(int i=0;i queue[++size]=data; w.AF7.X`1  
fixUp(size); w6b\l1Z  
} #*J+4a w3  
} w$E8R[J~P  
`$kKTc:f  
private int size=0; @51!vQwqR  
#Cj$;q{!  
private int[] queue; P4h^_*d  
%jS#DVxBR  
public int get() { S,I|8 YE  
return queue[1]; #YABb wH  
} u~JCMM$  
hxt,%al  
public void remove() { g}uVuK;<  
SortUtil.swap(queue,1,size--); WTlR>|Zdn  
fixDown(1); **RW 9FU  
} bcVzl]9  
file://fixdown 71g\fGG\  
private void fixDown(int k) { -#TF&-  
int j; -XbO[_Wf  
while ((j = k << 1) <= size) { {pzu1*  
if (j < size %26amp;%26amp; queue[j] j++; h'QEwW  
if (queue[k]>queue[j]) file://不用交换 y<r@zb9  
break; ")gd)_FOS  
SortUtil.swap(queue,j,k); GjHV|)^  
k = j; Qp]-:b  
} -W6r.E$mC  
} EWU(Al T  
private void fixUp(int k) { oU\Q|mN(  
while (k > 1) { y2_^lW%  
int j = k >> 1; :)~idVlV  
if (queue[j]>queue[k]) ,_G((oS40  
break; QTy xx  
SortUtil.swap(queue,j,k); /o/0 9K  
k = j; ">-mZ'$#L  
} <B3v4 f  
} ?PpGBm2f*  
Kuj*U'ed7t  
} 7 3 Oo;  
CrTGC%w{=  
} 1u%e7  
TB oN8cB}  
SortUtil: ~|FKl%  
K3CTxU(  
package org.rut.util.algorithm; *5Mg^}ZC5  
J)148/  
import org.rut.util.algorithm.support.BubbleSort; JGLjx"Y  
import org.rut.util.algorithm.support.HeapSort; JA")L0a_  
import org.rut.util.algorithm.support.ImprovedMergeSort; #z( JYw,  
import org.rut.util.algorithm.support.ImprovedQuickSort; x)^/3  
import org.rut.util.algorithm.support.InsertSort; u U|fCwQt  
import org.rut.util.algorithm.support.MergeSort; Z'u:Em  
import org.rut.util.algorithm.support.QuickSort; &efwfnG<  
import org.rut.util.algorithm.support.SelectionSort; J2va Kl  
import org.rut.util.algorithm.support.ShellSort; ]j^V5y"  
r+#!]wNPe  
/** y*f 5_  
* @author treeroot Q?1' JF!G  
* @since 2006-2-2 S4'\=w #  
* @version 1.0 8J5{}4s\f  
*/ @2Spfj_e  
public class SortUtil { +W xZB  
public final static int INSERT = 1; =7*k>]o  
public final static int BUBBLE = 2; z 8w&;Ls  
public final static int SELECTION = 3; MO1t 0Myc  
public final static int SHELL = 4; ulqh}Uv'  
public final static int QUICK = 5; SK>*tKY  
public final static int IMPROVED_QUICK = 6; Y[\ZN  
public final static int MERGE = 7; {I]X-+D|_  
public final static int IMPROVED_MERGE = 8; #]vy`rv  
public final static int HEAP = 9; !)nA4l= S#  
:(^, WOf  
public static void sort(int[] data) { Sz"rp9x+  
sort(data, IMPROVED_QUICK); f0<'IgN  
} x|TLMu=3=  
private static String[] name={ qh40nqS;9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L_k'r\L  
}; =Nc}XFq  
G#|`Bjv"aP  
private static Sort[] impl=new Sort[]{ 3lZ5N@z69  
new InsertSort(), ]O\m(of R  
new BubbleSort(), ;:^^Qfp  
new SelectionSort(), 1=9M@r~ ^  
new ShellSort(), CP%?,\  
new QuickSort(), bPe|/wp  
new ImprovedQuickSort(), jRhOo% p  
new MergeSort(), cyQ&w>'  
new ImprovedMergeSort(), 52zD!(   
new HeapSort() nw)yK%`;M  
}; U}=o3u  
M^e;WY@ D  
public static String toString(int algorithm){ +H'{!:e5  
return name[algorithm-1]; EWr8=@iU  
} pyf/%9R:d  
}u CC~ <^  
public static void sort(int[] data, int algorithm) { &idPO{G  
impl[algorithm-1].sort(data); j9bn|p$DA  
} ,rC$~ &  
BS6UXAf{|Z  
public static interface Sort { IpRdGT02  
public void sort(int[] data); ]P5|V4FXo  
} ]csfK${  
*yDsK+[_  
public static void swap(int[] data, int i, int j) { H J8rb  
int temp = data; {dbPMx  
data = data[j]; d/m.VnW  
data[j] = temp; IwR/4LYI  
} #y?iUv  
} 'JjW5  
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