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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。 *!g 24  
插入排序: +%Lt".o  
@GG(7r\/B  
package org.rut.util.algorithm.support; V\6(d  
<8rgtu!VU  
import org.rut.util.algorithm.SortUtil; G` ,u40a  
/** OQ(D5GR:4  
* @author treeroot o#xgrMB  
* @since 2006-2-2 LZM,QQ  
* @version 1.0 \T`["<  
*/ .73zik   
public class InsertSort implements SortUtil.Sort{ hhpv\1h#  
G[3k  
/* (non-Javadoc) 6x_ T@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8M^wuRn  
*/ L6:W'u^  
public void sort(int[] data) { #M5_em4kN  
int temp; i s L{9^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {[2tG U9  
} }pMP!%|  
} " F-Y^  
} E &7@#'l  
 c6Lif)4  
} Q !9HA[Ly  
'lhP!E_)q  
冒泡排序: e=t<H"&  
P_p6GT:5  
package org.rut.util.algorithm.support; Ys-Keyg  
>1x7UXs~:  
import org.rut.util.algorithm.SortUtil; )Fqy%uR8  
r8uqcKfU  
/** PSTu/^  
* @author treeroot t`"^7YFS>  
* @since 2006-2-2 -@''[m.*  
* @version 1.0 =- $!:W~  
*/ OlMBMUR:  
public class BubbleSort implements SortUtil.Sort{ CQdBf3q  
tTotPPZf}  
/* (non-Javadoc) YP[LQ>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'nRp}s1^[  
*/ 07x=`7hs}  
public void sort(int[] data) { j$@?62)6  
int temp; [@m[V1D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F`!TV(,bY  
if(data[j] SortUtil.swap(data,j,j-1); c[SU5 66y  
} zwK }7h6]  
} [tUv*jw%  
} AG]W O8f)  
} e:N7BZl'c9  
g b -Bxf  
} wms1IV%;  
2~f6~\4GL+  
选择排序: a{h%DpG  
ZjqA30!  
package org.rut.util.algorithm.support; /ZHO>LNN|  
||uZ bP@  
import org.rut.util.algorithm.SortUtil; h4f ~5- Y  
ZP"yq6!i  
/** hwiKOP  
* @author treeroot HOE2*4r  
* @since 2006-2-2 ibvJWg  
* @version 1.0 {G]?{c)"  
*/ Qi_&aU$>lM  
public class SelectionSort implements SortUtil.Sort { {  |s/]W  
>):m-I  
/* mA& =q_gS  
* (non-Javadoc) W. ^Ei\w/t  
* Cz_AJ-WR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Zc#j^_  
*/ 2s 7mI'  
public void sort(int[] data) { e1Ob!N-  
int temp; MRQZIi  
for (int i = 0; i < data.length; i++) { M Hg6PQIB  
int lowIndex = i; huz86CO  
for (int j = data.length - 1; j > i; j--) { T?>E{1pS  
if (data[j] < data[lowIndex]) { PdT83vOCE  
lowIndex = j; UxyY<H~Wx  
} dY8(nQG  
} _R)&k%i}  
SortUtil.swap(data,i,lowIndex); q0Xoj__c!A  
} _z q)0\  
} c4\C[$  
MU|{g 5/ )  
} Ls]@icH0  
r*chL&7  
Shell排序: dLZjB(0eO  
0h22V$  
package org.rut.util.algorithm.support; QZ&4:K+{  
YgEM:'1f  
import org.rut.util.algorithm.SortUtil; +@0TMK,P  
yO=p3PV d  
/** <;%0T xK|U  
* @author treeroot E/ijvuO  
* @since 2006-2-2 \<ZLoy_  
* @version 1.0 S_2"7  
*/ (#$$nQj  
public class ShellSort implements SortUtil.Sort{ F"'n4|q4n  
`fz,Lh*v  
/* (non-Javadoc) =`-|&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =+<d1W`>0  
*/ u, eZ6  
public void sort(int[] data) { #4><r.v3  
for(int i=data.length/2;i>2;i/=2){ Nsn~@.UuSW  
for(int j=0;j insertSort(data,j,i); b$Ln} <  
} fD{II+T  
} tjj^O%SV<  
insertSort(data,0,1); & 1_U1  
} FPF6H puV  
[![ G7H%f  
/** EWA;L?g|A  
* @param data J*j5#V];  
* @param j =h|wwQE  
* @param i K#!X><B'  
*/ DR@1z9 a  
private void insertSort(int[] data, int start, int inc) { JS!*2*Wr  
int temp; 1* ^'\W.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0z7L+2#b^  
} `B:"6nW6  
} o-z &7@3Hu  
} P? (vW&B  
3;-^YG  
} *_1[[~Aw  
@uM EXP  
快速排序: L,?/'!xV  
h*3{6X#(/  
package org.rut.util.algorithm.support; A2NF<ZsD  
G`F8!O(  
import org.rut.util.algorithm.SortUtil; "~/9F  
b{M}5~e=B  
/** ;wR 'z$8  
* @author treeroot RPH1''*!  
* @since 2006-2-2 B76 v}O:  
* @version 1.0 vX;HC'%n  
*/  8gC)5Y  
public class QuickSort implements SortUtil.Sort{ Hm fXe  
_9@ >;]  
/* (non-Javadoc) >.<ooWw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YTQps&mD.  
*/ J-V49X#  
public void sort(int[] data) { "'a* [%  
quickSort(data,0,data.length-1); ]\Xc9N8w  
} Gf0,RH+  
private void quickSort(int[] data,int i,int j){ 02\JzBU  
int pivotIndex=(i+j)/2; m!O;>D  
file://swap Yp1bH+/u  
SortUtil.swap(data,pivotIndex,j); gcf6\f}\<  
Dx-KMiQ,"(  
int k=partition(data,i-1,j,data[j]); q+ pOrGh  
SortUtil.swap(data,k,j); 5f^>b\8+ |  
if((k-i)>1) quickSort(data,i,k-1); zN{JJ3-  
if((j-k)>1) quickSort(data,k+1,j); jQ=~g-y  
+7U  
} nX^1$')gp  
/** l?8)6z#Zl  
* @param data  f:wd&V  
* @param i c0ez/q1S  
* @param j v+=k-;-  
* @return <&<,l58[c  
*/ [ohBPQO  
private int partition(int[] data, int l, int r,int pivot) { \.#p_U5In  
do{ A&,,9G<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]|U-y6 45  
SortUtil.swap(data,l,r); ECcZz.  
} {v` 2sB  
while(l SortUtil.swap(data,l,r); bk<FL6z z  
return l; KrcgIB8X  
} A6{b?aQ  
B=X,7  
} V&ot3- Rf  
C$9z  
改进后的快速排序: fD4ICO@  
0Fw6Dq<8-!  
package org.rut.util.algorithm.support; .lNs4e  
! bU\zH  
import org.rut.util.algorithm.SortUtil; Xsuwa-G!5~  
z0bJ?~w,  
/** @;:>GA  
* @author treeroot gSt`%  
* @since 2006-2-2 '91".c,3?  
* @version 1.0 F$MX,,4U  
*/ u~1o(Zn =  
public class ImprovedQuickSort implements SortUtil.Sort { oVOm_N  
_&#S@aGw  
private static int MAX_STACK_SIZE=4096; |Au]1}  
private static int THRESHOLD=10; L}sx<=8.m  
/* (non-Javadoc) g{:<2xI5P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RJ4. kt  
*/ 0;.<~;@h  
public void sort(int[] data) { JkQ\)^5v  
int[] stack=new int[MAX_STACK_SIZE]; JC#>Td  
.S?pG_n]f  
int top=-1; 89~ =eY  
int pivot; RA O`i>@  
int pivotIndex,l,r; &miexSNeF  
[10zTU`  
stack[++top]=0; en*d/>OVJ  
stack[++top]=data.length-1; > \Sr{p5KR  
0N:XIGFa  
while(top>0){ +q<B.XxkA  
int j=stack[top--]; 58V[mlW)O0  
int i=stack[top--]; TsQU6NNE  
a W%5~3  
pivotIndex=(i+j)/2; d3;qsUh$yv  
pivot=data[pivotIndex]; x=Hndx^  
&M />tE Z)  
SortUtil.swap(data,pivotIndex,j); I+(/TP  
M*eJ JY  
file://partition eH%RNtP`  
l=i-1; OJAIaC\  
r=j; q MYe{{r  
do{ 8, "yNq  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @>Mxwpl?  
SortUtil.swap(data,l,r); 2aN<w'pA  
} ` `U^COD  
while(l SortUtil.swap(data,l,r); m Lk(y*  
SortUtil.swap(data,l,j); >rsqH+oL  
!g!5_ |  
if((l-i)>THRESHOLD){ 0k,-;j,  
stack[++top]=i; 790-)\:CY  
stack[++top]=l-1; 2";SJF'5\  
} a2 +~;{?g  
if((j-l)>THRESHOLD){ J%H;%ROx  
stack[++top]=l+1; (la[KqqCO  
stack[++top]=j; U_GgCI)  
} R(Kk{c:-@  
IiBD?}  
} q`NXJf=sc  
file://new InsertSort().sort(data); {'En\e  
insertSort(data); Q]/Uq~m C  
} aGZi9O7G}  
/** 3r+.N  
* @param data nC1zzFFJ  
*/ Y?J"wdWJNB  
private void insertSort(int[] data) { "es?=  
int temp; 4NN$( S-W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )0 W`  
} vQ}6y  
} b75 $?_+  
} \b=Pj!^gwb  
$Xm6N@  
} I pzJ#  
(6l+lru[  
归并排序: $j}OB6^I  
\%Ves@hG>  
package org.rut.util.algorithm.support; l:#-d.z#  
XQ%4L-rhN  
import org.rut.util.algorithm.SortUtil; :r#)z4d5  
azQD>  
/** ev1 W6B-a  
* @author treeroot 8lF\v/vN  
* @since 2006-2-2 1NQbl+w#I  
* @version 1.0 'y]\-T  
*/ FTc.]laO  
public class MergeSort implements SortUtil.Sort{ [u}(57DS  
2%RNq<{Z_  
/* (non-Javadoc) zmj"fN{\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (;Y8pKl1e  
*/ ;5-r_D;9  
public void sort(int[] data) { X$%4$  
int[] temp=new int[data.length]; 2*"Fu:a"`I  
mergeSort(data,temp,0,data.length-1); .MQ^(  
} "tjLc6Xl^  
Wq*b~Lw  
private void mergeSort(int[] data,int[] temp,int l,int r){ BrRL7xX  
int mid=(l+r)/2; K~=UUB  
if(l==r) return ; [/s&K{+c  
mergeSort(data,temp,l,mid); #U8rO;$  
mergeSort(data,temp,mid+1,r); gz2\H}  
for(int i=l;i<=r;i++){ o8e?J\?  
temp=data; i%e7LJ@5AW  
} n Ox4<Wk&  
int i1=l; nJ4pTOc  
int i2=mid+1; =K'cM=WM6  
for(int cur=l;cur<=r;cur++){ QrO\jAZ{Ag  
if(i1==mid+1) {7TlN.(  
data[cur]=temp[i2++]; -7J|l  
else if(i2>r) ^7zu<lX  
data[cur]=temp[i1++]; 1I@8A>2^OX  
else if(temp[i1] data[cur]=temp[i1++]; N7E$G{TT  
else _@S`5;4x  
data[cur]=temp[i2++];  |@NiW\O  
} T91moRv  
} @36u8pE  
z [`@}}Q  
} Zo1,1O  
,h"-  
改进后的归并排序: "&Po,AWa  
bR@p<;G|  
package org.rut.util.algorithm.support; =X.LA%Sf=u  
qC F5~;7  
import org.rut.util.algorithm.SortUtil; [Nn`l,  
O G<,- 7  
/** c'/l,k  
* @author treeroot |5Xq0nvCe  
* @since 2006-2-2 U9b?i$  
* @version 1.0 .bBdQpF-  
*/ Y0eE-5F,  
public class ImprovedMergeSort implements SortUtil.Sort { {(r6e  
L(&&26Y  
private static final int THRESHOLD = 10; 45hF`b>%,  
ca+5=+X7  
/*  {o(j^@  
* (non-Javadoc) q, O$ %-70  
* g}@OUG"D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w] N!S;<N  
*/ %|s+jeUDn|  
public void sort(int[] data) { tcxcup%  
int[] temp=new int[data.length]; %iV^S !e  
mergeSort(data,temp,0,data.length-1); boDt`2=  
} %^RN#_ro(3  
(5]}5W*  
private void mergeSort(int[] data, int[] temp, int l, int r) { cnTaJ/o  
int i, j, k; I? ,>DHUX  
int mid = (l + r) / 2; I`NjqyTW  
if (l == r) #g6.Glz3  
return; U&O: _>~  
if ((mid - l) >= THRESHOLD) N-lkYL-%\j  
mergeSort(data, temp, l, mid); j?'GZ d"B  
else .Wjs~0c  
insertSort(data, l, mid - l + 1); H;RwO@v  
if ((r - mid) > THRESHOLD) "AE5 V'  
mergeSort(data, temp, mid + 1, r); Omd .9  
else ]+X@ 7  
insertSort(data, mid + 1, r - mid); s[UHe{^T  
/ m=HG^!  
for (i = l; i <= mid; i++) { c38D}k^):  
temp = data; 4?B\O`sy.  
} eJg8,7WC  
for (j = 1; j <= r - mid; j++) { 5oAK8I  
temp[r - j + 1] = data[j + mid]; | Bi!  
} G^ :C+/)  
int a = temp[l]; l\i)$=d&g  
int b = temp[r]; (+0v<uR^D  
for (i = l, j = r, k = l; k <= r; k++) { >y"+ -7V)  
if (a < b) { =>-Rnc@  
data[k] = temp[i++]; B_.%i+ZZ  
a = temp; 'inFKy'H  
} else { zCk^B/j sM  
data[k] = temp[j--]; EN/,5<S<,[  
b = temp[j]; M3.do^ss  
} A0Qb 5e  
} $< JaLS  
} }}59V&'t  
4 r45i:  
/** A}l3cP; `#  
* @param data dkz=CY3p%X  
* @param l q.;u?,|E/  
* @param i s7F.sg  
*/ 4t=G   
private void insertSort(int[] data, int start, int len) { PUUwv_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B6={&7U2  
} 'dn]rV0(C  
} DMOMh#[  
} kDsFR#w&`  
} \.-bZ$  
gw!vlwC&T  
堆排序: w(L4A0K[  
:> 5@cvc  
package org.rut.util.algorithm.support; q#%xro>m  
j:v@pzTD  
import org.rut.util.algorithm.SortUtil; fb~ytl<  
HAa; hb  
/** yU*8|FQbP  
* @author treeroot nlc "c5;jh  
* @since 2006-2-2 p>huRp^w  
* @version 1.0 $&n=$C&x  
*/ F1yqxWHeo  
public class HeapSort implements SortUtil.Sort{ Te[n,\Nb  
XuFYYx~ ^3  
/* (non-Javadoc) )P sY($ &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bx< <~[Ws}  
*/ lN Yt`xp  
public void sort(int[] data) { @u6B;)'l  
MaxHeap h=new MaxHeap(); a!v1M2>  
h.init(data); t7aefV&_,  
for(int i=0;i h.remove(); r97pOs#5:  
System.arraycopy(h.queue,1,data,0,data.length); 2fL;-\!y(  
} 'DCTc&J['  
%iQD /iT5  
private static class MaxHeap{ 8)_XJ"9)G  
JxM]9<a=4  
void init(int[] data){ MDnua  
this.queue=new int[data.length+1]; =c\>(2D  
for(int i=0;i queue[++size]=data; (,0(   
fixUp(size); GBPo8L"9  
} ) b (B  
} .(cw>7e3D  
R\!2l |_  
private int size=0; I=`U7Bis"  
Fj2BnM3#  
private int[] queue; ;~m8;8)  
uxr #QA  
public int get() { S4_YT@VD%  
return queue[1]; a .k.n<  
} f*?]+rz  
iP7(tnlW$  
public void remove() { rX2.i7i,  
SortUtil.swap(queue,1,size--); (@fHl=! Za  
fixDown(1); m;GCc8  
} )"7iJb<E  
file://fixdown ?^al9D[:lz  
private void fixDown(int k) { *Q "wwpl?  
int j; Mh]Gw(?w  
while ((j = k << 1) <= size) { -lY6|79bF  
if (j < size %26amp;%26amp; queue[j] j++; <Z mg#  
if (queue[k]>queue[j]) file://不用交换 1~NT.tY  
break; qm/22:&v5  
SortUtil.swap(queue,j,k); V_.5b&@  
k = j; Q+{xZ'o"Z  
} Rl?_^dPx  
} f.KN-f8<F  
private void fixUp(int k) { YJT&{jYi  
while (k > 1) { OrY/`+Cog  
int j = k >> 1; iP ->S\  
if (queue[j]>queue[k]) r@H /kD  
break; "#2a8#  
SortUtil.swap(queue,j,k); TNe l/   
k = j; =O5pY9UO  
} qN9(S:_Px  
} Kqb#_hm  
y51e%n$  
} NJWA3zz   
I-]?"Q7Jz  
} .ypL=~Rp  
$9_xGfx}  
SortUtil: Ot_]3:`J~  
6]WAUK%h  
package org.rut.util.algorithm; |\pj;XU  
h+g_rvIG*  
import org.rut.util.algorithm.support.BubbleSort; /NI;P]s.  
import org.rut.util.algorithm.support.HeapSort; y.mda:$~=  
import org.rut.util.algorithm.support.ImprovedMergeSort; |4;Fd9q^m  
import org.rut.util.algorithm.support.ImprovedQuickSort; "^})zf~_  
import org.rut.util.algorithm.support.InsertSort; FrGgga$  
import org.rut.util.algorithm.support.MergeSort; hF~n)oQ  
import org.rut.util.algorithm.support.QuickSort; `ts$(u.w  
import org.rut.util.algorithm.support.SelectionSort; k8&;lgO '  
import org.rut.util.algorithm.support.ShellSort; k<CJ{u0<  
7rc0yB  
/** X9W@&zQ  
* @author treeroot ]8_NZHld  
* @since 2006-2-2 Qb-M6ihcc  
* @version 1.0 ;"5&b!=t  
*/ l *(8i ^  
public class SortUtil { M2,l7  
public final static int INSERT = 1; -A^_{4X  
public final static int BUBBLE = 2; %S960  
public final static int SELECTION = 3; t&C1Oo}=3  
public final static int SHELL = 4; _7Ju  
public final static int QUICK = 5; ] vHF~|/-  
public final static int IMPROVED_QUICK = 6; > PRFWO  
public final static int MERGE = 7; JE "x  
public final static int IMPROVED_MERGE = 8; q$d>(vb q  
public final static int HEAP = 9; 24 'J  
z% ?+AM)P  
public static void sort(int[] data) { @e.C"@G  
sort(data, IMPROVED_QUICK); _$E6P^AQ  
} U2#"p   
private static String[] name={  ?Jm^<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]vUwG--*  
}; cKca;SNql1  
r,73C/*&/  
private static Sort[] impl=new Sort[]{ RLjc&WhzXu  
new InsertSort(), *SJ_z(CZm  
new BubbleSort(), {#vgtgBB  
new SelectionSort(), y&$A+peJ1  
new ShellSort(), gV's=cQ  
new QuickSort(), KxJ!,F{>H  
new ImprovedQuickSort(), %v M-mbX  
new MergeSort(), Ju@c~Xm  
new ImprovedMergeSort(), EHJ.T~X  
new HeapSort() t\dN DS  
}; :D5Rlfj  
L\J;J%fz.  
public static String toString(int algorithm){ b|:YIXml  
return name[algorithm-1]; ~g]Vw4pv  
} ;WQve_\  
Ua: sye  
public static void sort(int[] data, int algorithm) { gD @){Ip  
impl[algorithm-1].sort(data);  JYI,N  
} {UI+$/v#  
N)X3XTY  
public static interface Sort { xef% d G.  
public void sort(int[] data); g wRZ%.Cn  
} `r6,+&  
UcHJR"M~c  
public static void swap(int[] data, int i, int j) { Rsm^Z!sn  
int temp = data; yS'I[l  
data = data[j]; -$ls(oot  
data[j] = temp; 4SxX3Fw  
} q"lSZ; 'E  
} >y7?-*0  
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