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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。 i=-zaboo  
插入排序: elZ?>5P$}  
2@o_7w98  
package org.rut.util.algorithm.support; FG-w7a2mn  
Nf>1`eP  
import org.rut.util.algorithm.SortUtil; 02} &h  
/** A}sb 2P  
* @author treeroot $L.0$-je4  
* @since 2006-2-2 ZN|DR|c UY  
* @version 1.0 @M?N[LG  
*/ 3C8'0DB  
public class InsertSort implements SortUtil.Sort{ rO/mK$  
>'/G:\M>A  
/* (non-Javadoc) k=O2s'F`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )kl| 5i  
*/ >UpTMEQ  
public void sort(int[] data) { h FP$MFab  
int temp; S?%V o* Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 50(/LV1  
} k`r}Gb  
} :*e0Z2=  
} 8f% @  
=V1k'XJ  
} S'HM|&  
]YZ+/:#U7  
冒泡排序: _tL*sA>[~)  
>>wb yj8  
package org.rut.util.algorithm.support; ;"&^ckP  
zGu(y@o  
import org.rut.util.algorithm.SortUtil; gqJ&Q t#f  
%FQMB  
/** %lV&QQa  
* @author treeroot %L{H_;z  
* @since 2006-2-2 j_\sdH*r  
* @version 1.0 'bkecC  
*/ {SW104nb&#  
public class BubbleSort implements SortUtil.Sort{ |,5b[Y"Dt  
4-=>># P  
/* (non-Javadoc) \w^iSK-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t-lWvxXe  
*/ %$I\\q q>{  
public void sort(int[] data) { dx[<@f2c  
int temp; (hd^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q~r )B}  
if(data[j] SortUtil.swap(data,j,j-1); \CB{Ut+s  
} WKqNJN C  
} cg<10KT  
}  o )cd!,h  
} r~u/M0h `  
BXaA#} ;e  
} ,>2ijk#  
EKk~~PhW 8  
选择排序: {.z2n>1J{T  
AShJt xxa  
package org.rut.util.algorithm.support; tz&=v,_jc  
\^?BC;s^C  
import org.rut.util.algorithm.SortUtil; }?#<)|_5  
\rcbt6H  
/** 6J6MR<5'  
* @author treeroot {LY$  
* @since 2006-2-2 :HRJ49a  
* @version 1.0 XY1NTo. =  
*/ ${KDGJ,^  
public class SelectionSort implements SortUtil.Sort { z}s0D]$+x  
?.IT!M}DR  
/* 4*l ShkL  
* (non-Javadoc) E*7B5  
* 4CS 9vv)9R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `l1{BU  
*/ KB7CO:  
public void sort(int[] data) { p(%7|'  
int temp; Z~~{!C+G  
for (int i = 0; i < data.length; i++) { DL|,:2`  
int lowIndex = i; 9]VUQl9gh  
for (int j = data.length - 1; j > i; j--) { > z h  
if (data[j] < data[lowIndex]) { ]o_Z3xXUa  
lowIndex = j; ;) 5d wq  
} hv}rA,Yd  
} #wNksh/J^  
SortUtil.swap(data,i,lowIndex); q*Yh_IT.I  
} /P5w}n  
} a =*(>=  
%z J)mOu  
} II)\rVP5  
 {IYfq)c  
Shell排序: gf2l19aP  
@YMef `T:  
package org.rut.util.algorithm.support; G7pj.rQ  
8}\VlH]  
import org.rut.util.algorithm.SortUtil; .Frc:Y{  
782be-n  
/** `&4L'1eF{  
* @author treeroot K!5QFO4  
* @since 2006-2-2 234 OJ?  
* @version 1.0 j@v*q\X&  
*/ IaH8#3+a  
public class ShellSort implements SortUtil.Sort{ C&,&~^_F  
#!OCEiT_  
/* (non-Javadoc) 05LVfgJ'q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b~Op1p  
*/ f`.8.1Rd  
public void sort(int[] data) { O>w Gc8Of\  
for(int i=data.length/2;i>2;i/=2){ `ndesP  
for(int j=0;j insertSort(data,j,i); xSs);XO,  
} "L|Ew#  
} @T._   
insertSort(data,0,1); I(#Y\>DG  
} =;7gxV3;  
+b.<bb6  
/** Nlx7"_R"Q  
* @param data _:Tjq)  
* @param j M3odyO(  
* @param i BZ">N  
*/ @R_a'v-  
private void insertSort(int[] data, int start, int inc) { 4v33{sp  
int temp; 1%]| O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1LZ?!Lw  
} (#BkL:dg  
} ePq(:ih  
} a57Y9.H`o  
xM8}Xo  
} fB:9:NX  
]U!vZY@\  
快速排序: f'0n^mSP  
aA-A>z  
package org.rut.util.algorithm.support; 4!i`9w$$"  
u01 'f-h  
import org.rut.util.algorithm.SortUtil; sD7Qt  
;3U-ghj  
/** & 1p\.Y  
* @author treeroot UZi^ &  
* @since 2006-2-2 gYA|JFi  
* @version 1.0 &8_]omuNV  
*/ ]iRE^o6  
public class QuickSort implements SortUtil.Sort{ bTHKMaGWC  
c$rkbbf~V  
/* (non-Javadoc) 0Jm6 r4s?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KiT>W~  
*/ gD3s,<>o  
public void sort(int[] data) { Gi~p-OS,  
quickSort(data,0,data.length-1); 2qo=ud  
} ~YA* RCe  
private void quickSort(int[] data,int i,int j){ \{t#V ~  
int pivotIndex=(i+j)/2; a*$to/^r  
file://swap mv O!Y  
SortUtil.swap(data,pivotIndex,j); k<Z^93 S  
@*]l.F   
int k=partition(data,i-1,j,data[j]); ^ llZf$`  
SortUtil.swap(data,k,j); {E-.W"t4  
if((k-i)>1) quickSort(data,i,k-1); "XT7;!  
if((j-k)>1) quickSort(data,k+1,j); ]|it&4l  
Tz4,lwuWX7  
} uz-,)  
/** +D[|L1{xb  
* @param data R  5-q{  
* @param i <k<K"{  
* @param j KtchK pv  
* @return =dx!R ,Bw  
*/ I 8vv  
private int partition(int[] data, int l, int r,int pivot) { MP(R2y  
do{ btHN  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); seC]=UJh#>  
SortUtil.swap(data,l,r); eqU2>bI f  
} VR ^qwS/  
while(l SortUtil.swap(data,l,r); f.JZ[+  
return l; mE'y$5ZxY  
} ye:pGa w  
/x,gdZPX  
} e:fp8 k<  
91qk0z`N  
改进后的快速排序: Ef{rY|E  
<cNXe4(  
package org.rut.util.algorithm.support; P?p>'avP  
'bJ!~ML&  
import org.rut.util.algorithm.SortUtil; _*7h1[,{f  
rl4B(NZi}  
/** 7zXFQ|TP  
* @author treeroot bO 2>ced  
* @since 2006-2-2 GmP)"@O](;  
* @version 1.0 :i_818h!?[  
*/ 4e~^G  
public class ImprovedQuickSort implements SortUtil.Sort { u.sF/T=6f  
R*a5bKr  
private static int MAX_STACK_SIZE=4096; d9>*a$x;/  
private static int THRESHOLD=10; #"-?+F=rk  
/* (non-Javadoc) 5Ds/^fA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0D/u`-  
*/ (|)`~z  
public void sort(int[] data) { c[\ :^w^I6  
int[] stack=new int[MAX_STACK_SIZE]; lffp\v{w  
Hy ^E m  
int top=-1; ;*1bTdB5a  
int pivot; uPKq<hBI  
int pivotIndex,l,r; <_$]!Z6UR  
?j;e/r.  
stack[++top]=0; (MhC83|?  
stack[++top]=data.length-1; &IsQgS7R  
=M'M/vKD  
while(top>0){ PLU8:H@X  
int j=stack[top--]; nlmc/1C  
int i=stack[top--]; bP\0S@1YL  
A'r 3%mC  
pivotIndex=(i+j)/2; E9z^#@s  
pivot=data[pivotIndex]; =y -L'z&r  
M4 SJnE  
SortUtil.swap(data,pivotIndex,j); rCfr&>nn  
<6QG7 i  
file://partition uMVM-(g%  
l=i-1; %|E'cdvkX  
r=j; nfpkWyIu{  
do{ `q|&;wP.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mAMi-9  
SortUtil.swap(data,l,r); **_`AM~  
} JLUG=x(dA  
while(l SortUtil.swap(data,l,r); Py7!_TX  
SortUtil.swap(data,l,j); t\~lGG-p  
i)9}+M 5  
if((l-i)>THRESHOLD){ ;,P-2\V/  
stack[++top]=i; QR4rQu  
stack[++top]=l-1; &7z79#1NS  
} H,,-;tN?  
if((j-l)>THRESHOLD){ kms&o=^  
stack[++top]=l+1; D^Ahw"X)  
stack[++top]=j; ,K9\;{C  
} 3D_Ky Z~M+  
,dT.q  
} io :g ]g  
file://new InsertSort().sort(data); QK _1!t3  
insertSort(data); 88}+.-3t$  
}  7'u<)V  
/** dv=y,q@W  
* @param data %pj 6[x`@  
*/ RrrW0<Ed  
private void insertSort(int[] data) { r@N 0%JZZ  
int temp; j !^Tw.Ty  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {Hncm  
}  :VwU2  
} .K`OEdr<  
} wKF #8Y  
- s[=$pDU  
} piYv }4;:(  
OQzJRu)mF#  
归并排序: F*V<L   
<!b~7sZkTc  
package org.rut.util.algorithm.support; }$M 2XF  
'=MaO@ @  
import org.rut.util.algorithm.SortUtil; &:}e`u@5|  
gXr"],OM;  
/** XMhDx  
* @author treeroot 5/x"!Jk  
* @since 2006-2-2 ] jbQou@  
* @version 1.0 C!Cg.^;  
*/ 9~+A<X]Hd  
public class MergeSort implements SortUtil.Sort{ 7sP;+G  
O7@CAr  
/* (non-Javadoc) Eu/~4:XN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6k6M&a  
*/ / hUuQDJ  
public void sort(int[] data) { 5G.Fi21 b  
int[] temp=new int[data.length]; Bz}Dgbb  
mergeSort(data,temp,0,data.length-1); fw>@:m_bK  
} !iKR~&UpAL  
u] C/RDTH  
private void mergeSort(int[] data,int[] temp,int l,int r){ TymE(,1  
int mid=(l+r)/2; hUirvDvX  
if(l==r) return ; q6A!xQs<  
mergeSort(data,temp,l,mid); TU ]Ed*'&  
mergeSort(data,temp,mid+1,r); '[#a-8-JY_  
for(int i=l;i<=r;i++){ &gJKJ=7  
temp=data; }~P%S(zB  
} fDc>E+,  
int i1=l; [8*Ovd  
int i2=mid+1; cBf9-k  
for(int cur=l;cur<=r;cur++){ ;t!n%SnK9!  
if(i1==mid+1) ,h21 h?6  
data[cur]=temp[i2++]; mv@cGdxu  
else if(i2>r) ;\`~M  
data[cur]=temp[i1++]; Enee\!@v  
else if(temp[i1] data[cur]=temp[i1++]; ~;St,Fw<<  
else +EJwWDJ!%  
data[cur]=temp[i2++]; +|.}oL^}G  
} !_GY\@}  
} 4)D#kP  
?wE@9 g A  
} Zu(eYH=Q  
8@%Xd^  
改进后的归并排序: ~ILig}I  
;9r Z{'i+|  
package org.rut.util.algorithm.support;  Q(SVJ  
1xK'1g72  
import org.rut.util.algorithm.SortUtil; xt]Z{:.  
v-6" *EP  
/** YwGc[9=n  
* @author treeroot r\]yq -_  
* @since 2006-2-2 ';` fMcN  
* @version 1.0 Ke-Q>sm2Q  
*/ kN uDoo]z  
public class ImprovedMergeSort implements SortUtil.Sort { z9:@~3k.  
$iQ>c6  
private static final int THRESHOLD = 10; x_1JQDE  
}*Qd]\fy  
/* tq=1C=h  
* (non-Javadoc) "sLdkd}dj  
* <4jQbY;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y7SOz'd  
*/ :0o $qz2  
public void sort(int[] data) { h"VQFqQy  
int[] temp=new int[data.length]; Tks;,C  
mergeSort(data,temp,0,data.length-1); cT{iMgdI?  
} AoHA+>&U  
*D`qcv  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'G6TSl  
int i, j, k;  [+$l/dag  
int mid = (l + r) / 2; `NA[zH,w3  
if (l == r) Cpaeo0Oq  
return; Vzy]N6QT{  
if ((mid - l) >= THRESHOLD) ?7-#iC`  
mergeSort(data, temp, l, mid); 7}bjJR "  
else ];Whvdnv  
insertSort(data, l, mid - l + 1); JV'd!5P  
if ((r - mid) > THRESHOLD) /=Ug}%.  
mergeSort(data, temp, mid + 1, r); Q0~5h?V'  
else M<JJQh5  
insertSort(data, mid + 1, r - mid);  p>v,b&06  
-Hzn7L  
for (i = l; i <= mid; i++) { ^|}C!t+  
temp = data; 2{s ND  
} bHlG(1uf  
for (j = 1; j <= r - mid; j++) { qG"|,bA  
temp[r - j + 1] = data[j + mid]; j`Lf/S!}  
} iHjo3_g)n  
int a = temp[l]; A/N*Nc  
int b = temp[r]; Bc}<B:q%b  
for (i = l, j = r, k = l; k <= r; k++) { `7jm   
if (a < b) { Fk D  
data[k] = temp[i++]; mOwgk7s[ J  
a = temp; > 7!aZO  
} else { _dqjRhu  
data[k] = temp[j--]; @_YEK3l]l  
b = temp[j]; zF /}s_><*  
} [i[G" %Q  
} vZ 4Z+;.  
} Y~1}B_  
jIE>t5 fy  
/** k Fv\V   
* @param data 7UHqiA`L  
* @param l ?97MW a   
* @param i DGY#pnCu  
*/ yb/< 7  
private void insertSort(int[] data, int start, int len) { W9 y8dw.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Orh5d 7+S  
} uZZ[`PA(  
} 3M{!yPlj  
} rP ;~<IxEr  
} (Wr;:3i  
Y^LFJB|b4  
堆排序: 8DTk<5mW~  
1W~-C B>  
package org.rut.util.algorithm.support; `.a L>hf  
0!=e1_  
import org.rut.util.algorithm.SortUtil; 3sGrX"0D  
f[7'kv5S  
/** t^?8Di\  
* @author treeroot E E?v~6"&  
* @since 2006-2-2 A`(p6 H"s  
* @version 1.0 bI[!y#_z4  
*/ N-^\X3X  
public class HeapSort implements SortUtil.Sort{ /iif@5lw{  
+Smv<^bW  
/* (non-Javadoc) B2d$!Any  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >0 !J]gK  
*/ 4\pA^%73  
public void sort(int[] data) { d1e'!y}R5  
MaxHeap h=new MaxHeap(); &o"Hb=k<  
h.init(data); }=A6Jv(j  
for(int i=0;i h.remove(); T.ub! ,Y  
System.arraycopy(h.queue,1,data,0,data.length); rQ}4\PTi  
} qIjC-#a=m  
|L;'In  
private static class MaxHeap{ :EgdV  
CW\o>yh  
void init(int[] data){ /p\Ymq  
this.queue=new int[data.length+1]; =@pm-rI|-  
for(int i=0;i queue[++size]=data; xHsH .f_{  
fixUp(size); `^AbFV 3  
} 6(9Ta'ywZ  
} lk.Q6saI1  
F/j=rs,*|D  
private int size=0; k6JB%m\E  
8e\a_R*(|  
private int[] queue; k`g+    
w2]1ftY  
public int get() { vzi=[A  
return queue[1]; &8"a7$  
} 8e>;E  
8g>jz 8  
public void remove() {  >o.u,  
SortUtil.swap(queue,1,size--); W<!q>8Xn?  
fixDown(1); BCUw"R#  
} RB/[(4  
file://fixdown  (i*1M  
private void fixDown(int k) { ?[!.TU?4N  
int j; bG^eP :r  
while ((j = k << 1) <= size) { Jr17pu(t  
if (j < size %26amp;%26amp; queue[j] j++; 4n3QW%#  
if (queue[k]>queue[j]) file://不用交换 2IjqT L  
break; hN\E8"To  
SortUtil.swap(queue,j,k); w41#? VC/  
k = j; hph 3kfR  
} 1<\cMY6  
} p00\C  
private void fixUp(int k) { Rp`}"x9  
while (k > 1) { l^$:R~gS  
int j = k >> 1; PNc200`v4_  
if (queue[j]>queue[k]) d,<ctd  
break; !LIWoa[ F.  
SortUtil.swap(queue,j,k); asQ" |]m  
k = j; /SMp`Q88  
} S\0"G*  
} :\80*[=;Z  
}d.R=A9L  
} Gw+z8^|C&}  
 EVq<gGy  
} S}Mxm 2  
!@VmaAT  
SortUtil: Kjz,p^Y\  
$ya#-pi`;  
package org.rut.util.algorithm; >5^Z'!Z"  
[*}[W6 3v  
import org.rut.util.algorithm.support.BubbleSort; ;/oMH/,U8  
import org.rut.util.algorithm.support.HeapSort; ZLL0 6p   
import org.rut.util.algorithm.support.ImprovedMergeSort; Nq*\{rb  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0w+hf3K+:  
import org.rut.util.algorithm.support.InsertSort; c"O\fX  
import org.rut.util.algorithm.support.MergeSort; k9^P#l@p  
import org.rut.util.algorithm.support.QuickSort; [j93Mp  
import org.rut.util.algorithm.support.SelectionSort; 0A 4(RLGg  
import org.rut.util.algorithm.support.ShellSort; f[|xp?ef  
' J-(v  
/** _|A)ueY  
* @author treeroot $~D`-+J  
* @since 2006-2-2 :~T:&;q0  
* @version 1.0 <[~x]-  
*/ Hlz4f+#I  
public class SortUtil { +!_^MBkk  
public final static int INSERT = 1; ;U20g:K  
public final static int BUBBLE = 2; #mllVQ  
public final static int SELECTION = 3; vjXvjv{t  
public final static int SHELL = 4; ir]uFOj  
public final static int QUICK = 5; R4IFl z  
public final static int IMPROVED_QUICK = 6; xY!]eLZ)&  
public final static int MERGE = 7; 3I"&Qp%2  
public final static int IMPROVED_MERGE = 8; h+Q ==  
public final static int HEAP = 9; k.lnG5e  
mD)Nh  
public static void sort(int[] data) { 8<]> q  
sort(data, IMPROVED_QUICK); a?JU(  
} %{HqF>=~  
private static String[] name={ /@wm?ft6Gk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wh*OD  
}; q1?2 U<  
x7NxHTL  
private static Sort[] impl=new Sort[]{ RIJBHOa  
new InsertSort(), m7RWuI,  
new BubbleSort(), iz*aBXVA[  
new SelectionSort(), |Cen5s W&  
new ShellSort(), H<NYm#a"  
new QuickSort(), wV-cpJ,}  
new ImprovedQuickSort(), Z&.FJZUP  
new MergeSort(), *E$D,  
new ImprovedMergeSort(), zZf#E@=$|  
new HeapSort() !o.g2  
}; Tl=vgs1  
z4f5@  
public static String toString(int algorithm){ U3za}3  
return name[algorithm-1]; RsV<*s  
} t8P>s})[4  
55!9U:{  
public static void sort(int[] data, int algorithm) { ^ MddfBwk  
impl[algorithm-1].sort(data); =} vG|  
} ;<MaCtDt  
(O<lVz@8  
public static interface Sort { G+%ZN  
public void sort(int[] data); Ab(bvS8r$  
} Cog:6Gnw  
c3 wu&*p{  
public static void swap(int[] data, int i, int j) { tXp)o >"  
int temp = data; 2XI%4  
data = data[j]; SA/0Z=  
data[j] = temp; ,U2D &{@  
} \/$v@5  
} r} ,|kb  
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