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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。 = P$7 "  
插入排序: EzCi%>q  
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package org.rut.util.algorithm.support; su8()]|0x  
N#:W#C{16w  
import org.rut.util.algorithm.SortUtil; Wp^ |=  
/** 6-{wo)p  
* @author treeroot Ipow Jw^  
* @since 2006-2-2 hrfSe$8  
* @version 1.0 &&96kg3  
*/ a'my0m  
public class InsertSort implements SortUtil.Sort{ Q b5vyV `  
v}^uN+a5  
/* (non-Javadoc) v?DA>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "(\]-%:7  
*/ Q 9JT6  
public void sort(int[] data) {  /zir$  
int temp; np7!y U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :%zAX  
} #'y^@90R  
} q\fai^_  
} #CB`7 }jq  
;,B $lgF  
} dda*gq/p  
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冒泡排序: h61BIc@>  
!T]bz+  
package org.rut.util.algorithm.support; ~llw_ w  
jrYA5>=>#  
import org.rut.util.algorithm.SortUtil; 0IbR>zFg.  
xw1n;IO4  
/** U,~Z2L  
* @author treeroot sbFA{l3   
* @since 2006-2-2 nh"LdHqiDB  
* @version 1.0 %#lJn.o  
*/ F @Wb<+0  
public class BubbleSort implements SortUtil.Sort{ il:RE8  
vH?3UW  
/* (non-Javadoc) YJ01-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <gY.2#6C\%  
*/ ?NUDHUn_  
public void sort(int[] data) { Z&J.8A]L  
int temp; 8d>>r69$pa  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Aq&H-g]s  
if(data[j] SortUtil.swap(data,j,j-1); E. Arq6  
} F8*P/<P1cK  
} \ 3l3,VYH  
} <\\,L@  
} .W0;Vhw"  
'c/Z W  
} {,o =K4CD  
2&:w_KJ  
选择排序: E uk[ @1  
+H3;{ h9,  
package org.rut.util.algorithm.support; !O/(._YB`  
qMcOSZ%8J  
import org.rut.util.algorithm.SortUtil; f\vg<lca  
3*<~;Z' z4  
/** ,N2|P:x  
* @author treeroot >iWw i'T=  
* @since 2006-2-2 u-X P `  
* @version 1.0 CDRz3Hu U  
*/ h%%dRi  
public class SelectionSort implements SortUtil.Sort { ^36m$J$  
0BHSeO,  
/* ]}N&I_mU  
* (non-Javadoc)  ZG-[Gz  
* ZfWF2%]<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (>gHfC>(lq  
*/ dWDf(SS  
public void sort(int[] data) { }!5+G:JAh  
int temp; <0^L L  
for (int i = 0; i < data.length; i++) { ':?MFkYC  
int lowIndex = i; DzK%$#{<  
for (int j = data.length - 1; j > i; j--) { :g"U G0];  
if (data[j] < data[lowIndex]) { 7D)i]68E  
lowIndex = j; mMtX:  
} P }$DCD<$U  
} ZklZU,\!|v  
SortUtil.swap(data,i,lowIndex); %0^taA  
} ch:0qgJ  
} v.e~m2u_F  
Z3nmC-NE  
} =%G<S'2'  
)|i]"8I  
Shell排序: D7(kkr:r  
Kx5VR4f`J@  
package org.rut.util.algorithm.support; PLDp=T%  
$_&gT.>  
import org.rut.util.algorithm.SortUtil; :k7h"w  
4l"oq"uc  
/** RS1c+]rr  
* @author treeroot d^ YM@>%  
* @since 2006-2-2 |a[Id  
* @version 1.0  Cdbh7  
*/ #~>ykuq  
public class ShellSort implements SortUtil.Sort{ KZt4 dr  
}6^d/nE*T  
/* (non-Javadoc) [%yCnt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dQH9NsV7g  
*/ P[bj {lo  
public void sort(int[] data) { J+20]jI  
for(int i=data.length/2;i>2;i/=2){ #[aHKq:?b  
for(int j=0;j insertSort(data,j,i); I^yInrRh5  
} 9)]asY  
} ~xP4}gs1  
insertSort(data,0,1); j5qrM_Chg  
} S2EeC&-AR  
ojQjx|Q}  
/** }O7b&G:nW  
* @param data *1cl PK  
* @param j ]&RC<imq  
* @param i L]|[AyNu  
*/ kc&MO`2 W\  
private void insertSort(int[] data, int start, int inc) { ~xaPq=AH  
int temp; o+T %n1$+V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); P% ZCACzV  
} OKp0@A)8  
} {Kkut?5  
} (*\*7dIo  
v08Xe*gNU  
} 2W 9N-t2 1  
fu6Ir,  
快速排序: tHV81F1J  
b63tjqk  
package org.rut.util.algorithm.support; 5t&;>-A'?'  
12MWO_'g8  
import org.rut.util.algorithm.SortUtil; MehMhHY  
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/** 3BWYSJ|  
* @author treeroot y&$v@]t1  
* @since 2006-2-2 yw9)^JU8"  
* @version 1.0 .q^+llM  
*/ ES&"zjr$  
public class QuickSort implements SortUtil.Sort{ f mQ`8b  
S>s{t=AY~  
/* (non-Javadoc) nd)bRB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nVVQ^i}`G  
*/ +8\1.vY  
public void sort(int[] data) { */JMPw&  
quickSort(data,0,data.length-1); Y &"rf   
} .W)%*~ O!;  
private void quickSort(int[] data,int i,int j){ |X$O'Gf#n  
int pivotIndex=(i+j)/2; 5bKm)|4z6  
file://swap bF X0UE>  
SortUtil.swap(data,pivotIndex,j); r#CQCq  
o> i`Jq&  
int k=partition(data,i-1,j,data[j]); W~e/3#R\=  
SortUtil.swap(data,k,j); > R5<D'cEN  
if((k-i)>1) quickSort(data,i,k-1); :6r)HJ5sg  
if((j-k)>1) quickSort(data,k+1,j); jR CG}'  
AvS<b3EoN  
} k&h3"  
/** }pzUHl>  
* @param data =5jng.  
* @param i ?UGA-^E1  
* @param j bdUe,2Yin  
* @return VS{po:]A  
*/ Z*Fxr;)d  
private int partition(int[] data, int l, int r,int pivot) { zJ2dPp~u  
do{  aX'R&R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w`")^KXi  
SortUtil.swap(data,l,r); e MT5bn  
} @ !UuK;  
while(l SortUtil.swap(data,l,r); ]a}K%D)H  
return l; nA#FGfZ{Ge  
} *$eMM*4  
sD[G?X  
} Fuuy_+p@G  
W"a%IO%'  
改进后的快速排序:  @{|vW  
lSu\VCG  
package org.rut.util.algorithm.support; B]o5 HA<k  
2# y!(D8  
import org.rut.util.algorithm.SortUtil; V"T48~Ue  
j(|9>J*,~G  
/** I#m0n%-[  
* @author treeroot  XAb!hc   
* @since 2006-2-2 TzJp3  
* @version 1.0 tXgsWG?v[H  
*/ 3{wmKo|_X  
public class ImprovedQuickSort implements SortUtil.Sort { XsVp7zk\  
<lBY  
private static int MAX_STACK_SIZE=4096; -t:~d:  
private static int THRESHOLD=10; GV1SKa  
/* (non-Javadoc) ;MH<T6b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6/Pw'4H9$  
*/ hrRkam !y  
public void sort(int[] data) { +l " z  
int[] stack=new int[MAX_STACK_SIZE]; t69C48}15  
G{ 9p.Q  
int top=-1; |H LU5=Y  
int pivot; xKl!{A9$w  
int pivotIndex,l,r; C{r Sq  
,o3{?o]s  
stack[++top]=0; ;6T>p  
stack[++top]=data.length-1; X<OOgC  
{O4y Y=G  
while(top>0){ *C (/ 2  
int j=stack[top--]; gW[(gf.oo  
int i=stack[top--]; |NsrO8H   
aOj(=s  
pivotIndex=(i+j)/2; /i${[1  
pivot=data[pivotIndex]; p%8v+9+h2  
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SortUtil.swap(data,pivotIndex,j); y$f{P:!"{3  
d1"%sI  
file://partition 3j]P\T  
l=i-1; }52]  
r=j; a=m7pe ^  
do{ xTy[X"sJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yMQZulCWE  
SortUtil.swap(data,l,r); xzqgem`[\  
} \,b@^W6e>  
while(l SortUtil.swap(data,l,r); @.PVUP  
SortUtil.swap(data,l,j); *Z+8L*k97  
jI-\~  
if((l-i)>THRESHOLD){ PW[NW-S`c  
stack[++top]=i; `H_.<``>  
stack[++top]=l-1; vU X(h.}8  
} \ nIz5J}3  
if((j-l)>THRESHOLD){ LZ97nvK  
stack[++top]=l+1; b*7:{ FXg  
stack[++top]=j; .fQ/a`AsU  
} I(cy<ey+e  
o]#M8)=  
} errT7&@,A  
file://new InsertSort().sort(data); OJkiTs{  
insertSort(data); jP]I>Tq  
} 3kl<~O|Fs  
/** ^X&n-ui   
* @param data rM sd)  
*/ [%8t~zg  
private void insertSort(int[] data) { rW~hFSrV[o  
int temp; eC9nOwp]xH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Jj~c&LxrO  
} yK$.wd 2,  
} 'q#$^ ='o  
} 1nt VM+  
@dy<=bh~  
} _* xjG \!  
A[/_}bI|  
归并排序: ,}("es\b  
x"n!nT%Z  
package org.rut.util.algorithm.support; F|eKt/>e  
A@-A_=a,  
import org.rut.util.algorithm.SortUtil; ]/o0p  
MQ9Nn|4  
/** t3~ZGOn  
* @author treeroot bD&^-& G  
* @since 2006-2-2 Qj?qWVapA  
* @version 1.0 ^* xhbM;  
*/ I$#B#w?!$r  
public class MergeSort implements SortUtil.Sort{ YPjjSi:#  
C&&*6E5  
/* (non-Javadoc) $yZ(c#L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; W/K7}  
*/ \Bg;^6U  
public void sort(int[] data) { ),G?f {`!  
int[] temp=new int[data.length]; jkPye{j  
mergeSort(data,temp,0,data.length-1); muAI$IRR   
} @E(_H$|E  
(5^bU<  
private void mergeSort(int[] data,int[] temp,int l,int r){ @AXRKYQ{t  
int mid=(l+r)/2; +YL9gNN>P  
if(l==r) return ; ZQZBap"  
mergeSort(data,temp,l,mid); =~OH.=9\  
mergeSort(data,temp,mid+1,r); NA%(ZRSg(  
for(int i=l;i<=r;i++){ Z*Sa%yf  
temp=data; c k$ > yk  
} Px!M^ T!Pi  
int i1=l; kl0!*j  
int i2=mid+1; ;3nR_6\  
for(int cur=l;cur<=r;cur++){ q'07  
if(i1==mid+1) dSD7(s!  
data[cur]=temp[i2++]; :YZqrcr}  
else if(i2>r) j^t#>tZS  
data[cur]=temp[i1++]; Mw0Kg9M  
else if(temp[i1] data[cur]=temp[i1++]; z,6X{=  
else x=UwyZ  
data[cur]=temp[i2++]; u afSz@`  
} ?0v(_ v  
} `)9nBZ  
L(p{>Ykcc  
} H`js1b1n  
 d"E@e21  
改进后的归并排序: 6;LM1 _  
@~4Q\^;NX  
package org.rut.util.algorithm.support; e?Pzhh a  
5 A/[x $q  
import org.rut.util.algorithm.SortUtil; Fk:yj 4'  
%gF; A*  
/** !>~W5c^  
* @author treeroot !+& Rn\e%7  
* @since 2006-2-2 b(hnouS  
* @version 1.0 WUVRwJ 5  
*/ [d( @lbV0  
public class ImprovedMergeSort implements SortUtil.Sort { ZyJdz+L{@V  
IZ<d~ [y  
private static final int THRESHOLD = 10; 9t 3mU:  
7^{M:kYC!  
/* $6W o$c%  
* (non-Javadoc) Ueq*R(9>  
* 6ty>0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jj<UtD+  
*/ oKl^Ttr  
public void sort(int[] data) { TRQ@=.  
int[] temp=new int[data.length]; MwoU>+XB  
mergeSort(data,temp,0,data.length-1); QB<9Be@e  
} 3GH@|id  
9#:b+Amzz  
private void mergeSort(int[] data, int[] temp, int l, int r) { ! xU1[,9  
int i, j, k; ]et4B+=i  
int mid = (l + r) / 2; N;<.::x  
if (l == r) d?j_L`?+  
return; ~0mO<0~  
if ((mid - l) >= THRESHOLD) )c'5M]V  
mergeSort(data, temp, l, mid); Ca: jN0  
else x%acWeV5  
insertSort(data, l, mid - l + 1); *Q?ZJS ~  
if ((r - mid) > THRESHOLD) fl{wF@C6  
mergeSort(data, temp, mid + 1, r); orGNza"A  
else ?tWcx;h:>  
insertSort(data, mid + 1, r - mid); <A"T_Rk  
7Z-'@m  
for (i = l; i <= mid; i++) { ? o@5PL  
temp = data;  E*[dc  
} 8PQn=k9  
for (j = 1; j <= r - mid; j++) { jv:!vi:  
temp[r - j + 1] = data[j + mid]; |N9::),<  
} )!h(oR  
int a = temp[l]; `rt  
int b = temp[r]; |5uvmK  
for (i = l, j = r, k = l; k <= r; k++) { ;Z\1PwT  
if (a < b) { jOJ$QT  
data[k] = temp[i++]; E7A psi4]  
a = temp; d(.e%[`  
} else { Y{6vW-z_<  
data[k] = temp[j--]; _l?InNv  
b = temp[j]; (!-gX" <b  
} -E6#G[JJ  
} (1~d/u?2\  
} 7 Jxhn!  
sV8}Gv a  
/** H4s^&--  
* @param data =0te.io)3O  
* @param l K[tQ>C@s2  
* @param i W|IMnK-  
*/ %LeQpbyOR  
private void insertSort(int[] data, int start, int len) { {K\l3_=5qb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QEKRAPw  
} `Yk~2t"V  
} #cB=] (N  
} VO _! +  
} !.(Kpcrg  
uSZCJ#'G  
堆排序: axJuJ`+Y  
=oZHN,  
package org.rut.util.algorithm.support; mWOW39Ku  
9FB[`}  
import org.rut.util.algorithm.SortUtil; 6jv_j[[  
d~bZOy  
/** en"]u,!  
* @author treeroot 6#A g^A  
* @since 2006-2-2 (@t O1g  
* @version 1.0 "/ N ?$  
*/ Dj Z;LE>  
public class HeapSort implements SortUtil.Sort{ YCv)DW;  
6OBe^/ZRt  
/* (non-Javadoc) d~i WV6Va  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?gknJ:  
*/ ?xftr(  
public void sort(int[] data) { EV1x"}D A_  
MaxHeap h=new MaxHeap(); -^ )0c  
h.init(data); y v6V1gK  
for(int i=0;i h.remove(); ws"{Y+L  
System.arraycopy(h.queue,1,data,0,data.length); ~}uv4;0l]  
} D?+\"lI  
~SI`%^L  
private static class MaxHeap{ !VaKq_W  
'q158x  
void init(int[] data){ $;kFuJF  
this.queue=new int[data.length+1]; fkLI$Cl  
for(int i=0;i queue[++size]=data; qOA+ao  
fixUp(size); K U 2LJ_~Y  
} )?5027^  
} D{-h2=V  
"4Joou"U  
private int size=0; ;yfKYN[  
;kSRv=S  
private int[] queue; U3Fa.bC6}  
vrRbUwL!  
public int get() { Z XCq>  
return queue[1]; } tq  
} #xUX1(  
``;.Oy6jS  
public void remove() { ChvSUaCS  
SortUtil.swap(queue,1,size--); Ban@$uf  
fixDown(1); yyp0GV.x  
} [v@3|@  
file://fixdown SM57bN  
private void fixDown(int k) { }ufzlHD  
int j; W<f-  
while ((j = k << 1) <= size) { gN,O)@N'd3  
if (j < size %26amp;%26amp; queue[j] j++; &cZQ,o  
if (queue[k]>queue[j]) file://不用交换 ,;3bPjey  
break; Ck:RlF[6C  
SortUtil.swap(queue,j,k); 2TFb!?/RQ  
k = j; #&V7CYJ  
} '}4z=f`}  
} mS\ gh)<h  
private void fixUp(int k) { LtIR)EtB]  
while (k > 1) { #Hn<4g"AjM  
int j = k >> 1; <WXGDCj  
if (queue[j]>queue[k]) NCW<~   
break; 3,ihVVr&P  
SortUtil.swap(queue,j,k); TLcev*  
k = j; #'DrgZ)W  
} a0wSXd  
} (p19"p  
;(&$Iw9X  
} X8}m %  
WqX$;' }h  
} *~h@KQm7  
{gL8s  
SortUtil: M =/+q  
U yb-feG  
package org.rut.util.algorithm; ,/fB~On-  
FUt{-H!<  
import org.rut.util.algorithm.support.BubbleSort; \d'>Ky;GD  
import org.rut.util.algorithm.support.HeapSort; x;^DlyyYU  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y ~TR`y  
import org.rut.util.algorithm.support.ImprovedQuickSort; `w&A;fR! H  
import org.rut.util.algorithm.support.InsertSort; <{ER#}b:O  
import org.rut.util.algorithm.support.MergeSort; lEZODc+%Y  
import org.rut.util.algorithm.support.QuickSort; 6TR` O  
import org.rut.util.algorithm.support.SelectionSort; v3p0  
import org.rut.util.algorithm.support.ShellSort; *F<Ar\f5  
AvmI<U  
/** 'hoEdJ]t5  
* @author treeroot Abw=x4d(i  
* @since 2006-2-2 V 4#bW  
* @version 1.0 aru;yR  
*/ N8[ &1  
public class SortUtil { -dto46X  
public final static int INSERT = 1; *VUD!`F  
public final static int BUBBLE = 2; H=/;  
public final static int SELECTION = 3; Sg&0a$  
public final static int SHELL = 4; lU\v8!Ji  
public final static int QUICK = 5; vpg*J/1[  
public final static int IMPROVED_QUICK = 6; lXT+OJF  
public final static int MERGE = 7; >z'T"R/  
public final static int IMPROVED_MERGE = 8; [QwBSq8)  
public final static int HEAP = 9; gLDO|ADni  
^P!(* k#T  
public static void sort(int[] data) {  JT,[;  
sort(data, IMPROVED_QUICK); ngt?9i;N  
} '?Jz8iu-  
private static String[] name={ Z|#G+$"QV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h tuYctu`  
}; euMJ c  
#Dz. 58A  
private static Sort[] impl=new Sort[]{ 4)Bk:K  
new InsertSort(), ^g'P H{68  
new BubbleSort(), 5i0vli /L  
new SelectionSort(), ]/#3 P  
new ShellSort(), yI{4h $c  
new QuickSort(), XLgp.w;  
new ImprovedQuickSort(), N,3 )`Vm  
new MergeSort(), DqJzsk'd3  
new ImprovedMergeSort(), "C]v   
new HeapSort() <eh<4_<qF  
}; [mcER4]}  
0Yk$f1g  
public static String toString(int algorithm){ yC:C  
return name[algorithm-1]; qNuBK6E#4  
} I.6 qA *  
, 3&D A  
public static void sort(int[] data, int algorithm) { #?h-<KQQ  
impl[algorithm-1].sort(data); S'_2o?fs  
} TpGnSD  
6/dP)"a('  
public static interface Sort { q/h , jM  
public void sort(int[] data); s~NJy'Y  
} ?mp}_x#=  
:|HCUZ*H(T  
public static void swap(int[] data, int i, int j) { ==Ah& ){4^  
int temp = data; t" $#KP<  
data = data[j]; ysH'X95  
data[j] = temp; Z#t}yC%^d  
} o.g)[$M8cF  
} 01 <Ti"  
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