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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。 sMJa4P>O@  
插入排序: UN;U+5,t  
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package org.rut.util.algorithm.support; f1o^:}5x  
SjJ$Oinc  
import org.rut.util.algorithm.SortUtil; *(i%\  
/** r<P?F  
* @author treeroot &js$qgY  
* @since 2006-2-2 |6Iw\YU  
* @version 1.0 G2c\"[N1/  
*/ L-q)48+^k  
public class InsertSort implements SortUtil.Sort{ _wW"Tn]  
$mf6!p4  
/* (non-Javadoc) ci 22fw0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !@ AnwV]  
*/ F<2gM#jLB  
public void sort(int[] data) { #q&N d2y  
int temp; k#mL4$]V5N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UA0( cK  
} k4:=y9`R}$  
} o(3OChH  
} LT,zk)5  
{ M[iYFg=  
} %t:13eM  
%,Y^Tp  
冒泡排序: 76c:* bZ  
cauKG@:2F  
package org.rut.util.algorithm.support; >w\3.6A  
;\/ RgN  
import org.rut.util.algorithm.SortUtil; w/(2fU(  
4}YHg&@\d%  
/** O=!EqaExW  
* @author treeroot +tYskx/  
* @since 2006-2-2 "oR%0pU*  
* @version 1.0 }1sd<<\`  
*/ ._'.F'd  
public class BubbleSort implements SortUtil.Sort{ ~"R;p}5 "  
ukD:4s v  
/* (non-Javadoc) 2Aa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W7T2j+]  
*/ `j.-hy>s  
public void sort(int[] data) {  .^rs VNG  
int temp; =`V9{$i  
for(int i=0;i for(int j=data.length-1;j>i;j--){ akgvV~5  
if(data[j] SortUtil.swap(data,j,j-1); v:9Vp{)  
} MP Q?Q]'  
} 5'(#Sf  
} ET6}V"UD  
} zj1_#=]  
pM!cF  
} <2I<Z'B,e  
0{Zwg0&  
选择排序: = o1&.v2j  
nC9x N  
package org.rut.util.algorithm.support; : +fW#:  
u H)v\Js  
import org.rut.util.algorithm.SortUtil; ;,B $lgF  
yfA h=  
/** $1D>}5Ex  
* @author treeroot %b ^.Gw\L  
* @since 2006-2-2 <a D}Ko(  
* @version 1.0 0INlo   
*/ M8FC-zFs  
public class SelectionSort implements SortUtil.Sort { RUV:   
`hU 2Ss~  
/* Iw</X}#\  
* (non-Javadoc) Qu|<1CrZj]  
* z }P1+Pm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `u;4Z2Lr0  
*/ dJmr!bN\;  
public void sort(int[] data) { gBXbB9  
int temp; Gii1|pLZ1  
for (int i = 0; i < data.length; i++) { r5!Sps3B  
int lowIndex = i; w"E.Va  
for (int j = data.length - 1; j > i; j--) { )TkXdA?.  
if (data[j] < data[lowIndex]) { 82=>I*0Q  
lowIndex = j; mH4Jl1S&  
} 59a7%w  
} Jn1(-  
SortUtil.swap(data,i,lowIndex); G5zsId dS  
} FS6ZPjG)  
} hKQg:30<  
J|WkPv2  
} Uv=hxV[7y  
Sh o] ~)XX  
Shell排序: t1]sv VX,w  
4VlQN$  
package org.rut.util.algorithm.support; PZCOJK  
T_4y;mf!@O  
import org.rut.util.algorithm.SortUtil; )Yw m_f-N  
.RWKZB  
/** |z.Z='`  
* @author treeroot :*E#w"$,j  
* @since 2006-2-2 koOp:7r  
* @version 1.0 7|pF (sb0  
*/ jb!15Vlt"  
public class ShellSort implements SortUtil.Sort{ @ u2 P&|:{  
|(UkI?V  
/* (non-Javadoc) c_.4~>qw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w 8oIq*  
*/ &UoQ8&  
public void sort(int[] data) { ;rJ/Diz!g  
for(int i=data.length/2;i>2;i/=2){ 7T9Mo .  
for(int j=0;j insertSort(data,j,i); 9uA2M!~i2  
} Zd[6-/-:  
} 4.i< `'  
insertSort(data,0,1); WH0$v#8`v  
} . ^JsnP  
*bTR0U  
/** `1U?^9Nf  
* @param data DTSK*a`  
* @param j CXhE+oS5z'  
* @param i a*KJjl?k  
*/ pksF| VS  
private void insertSort(int[] data, int start, int inc) { dfA4OZ&  
int temp; c=\H&x3X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .VfBwTh7q8  
} gye'_AR?k  
} \y0uGnmCj  
} ]tDuCZA  
<+${gu?^  
} @m(ja@YC  
;kiL`K  
快速排序: lG!We'?  
`F TA{ba  
package org.rut.util.algorithm.support; !TdbD56  
*mj3  T  
import org.rut.util.algorithm.SortUtil; *Z=:?4u  
j= Ebk;6p  
/** A@k`$xevVj  
* @author treeroot N\WEp?%~  
* @since 2006-2-2 j?cE0 hz  
* @version 1.0 zXx)xIO  
*/ ;bxL$1  
public class QuickSort implements SortUtil.Sort{ *we*IhIP  
YU24wTe;k  
/* (non-Javadoc) C*1,aLSw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ -n?q w  
*/ 9 54O=9PQ  
public void sort(int[] data) { )M(-EDL>Qk  
quickSort(data,0,data.length-1); \4pWHE/  
} \z>L,U  
private void quickSort(int[] data,int i,int j){ tHV81F1J  
int pivotIndex=(i+j)/2; b63tjqk  
file://swap NU?05sF  
SortUtil.swap(data,pivotIndex,j); 12MWO_'g8  
vpl> 5%  
int k=partition(data,i-1,j,data[j]); 3BWYSJ|  
SortUtil.swap(data,k,j); y&$v@]t1  
if((k-i)>1) quickSort(data,i,k-1); yw9)^JU8"  
if((j-k)>1) quickSort(data,k+1,j); .q^+llM  
?* %J Gz_  
} Gh#$[5&`  
/** ",gWO 8T  
* @param data tE]0 #B)D<  
* @param i MTxe5ob`$Q  
* @param j y.'5*08S0  
* @return %qf ?_2v  
*/ W8R"X~!V  
private int partition(int[] data, int l, int r,int pivot) { _R?:?{r,  
do{ ic_q<Y}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LmQS;/:  
SortUtil.swap(data,l,r); Sx", Zb  
} $8"G9r  
while(l SortUtil.swap(data,l,r); ggn:DE "  
return l; a*gzVE7W#n  
} hLf<-NM  
orcPKCz|"  
} @L ,hA v ^  
4)XZ'~|  
改进后的快速排序: SZ[ ,(h  
sF`ELrR \  
package org.rut.util.algorithm.support; &n)=OConge  
^YLk&A)X  
import org.rut.util.algorithm.SortUtil; FnFJw;:,{  
Z*Fxr;)d  
/** o2C{V1nB  
* @author treeroot sAG#M\A6  
* @since 2006-2-2 )Kw Gb&l&  
* @version 1.0 LyB &u( )  
*/ ^t{2k[@  
public class ImprovedQuickSort implements SortUtil.Sort { .0b$mSV[  
dq&N;kk |  
private static int MAX_STACK_SIZE=4096; d?uN6JH9  
private static int THRESHOLD=10; 2MapB*  
/* (non-Javadoc) n%J {Tcn6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bm+ #OI  
*/ U)n+j}vi  
public void sort(int[] data) { O*8 .kqlgt  
int[] stack=new int[MAX_STACK_SIZE]; `Z 3p( G  
np#RBy  
int top=-1; &2EimP  
int pivot; TZ2-%k#  
int pivotIndex,l,r; ; n)9  
d/fg  
stack[++top]=0; Av#_cL  
stack[++top]=data.length-1; u\9t+wi}<  
Vk>m/"  
while(top>0){ XDWR ]  
int j=stack[top--]; E~y@ue:  
int i=stack[top--]; 1D6F WYV8  
y)B>g/Hoh  
pivotIndex=(i+j)/2; };z[x2l^  
pivot=data[pivotIndex]; b;X|[tB  
o'8`>rb  
SortUtil.swap(data,pivotIndex,j); ~$O.KF:  
#:y h2y7a%  
file://partition 2!u4nxZ.  
l=i-1; wInJ!1  
r=j; ,a&&y0,  
do{ ,'E+f%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sKvz<7pag  
SortUtil.swap(data,l,r); sfv{z!mo  
} KG! W,tB  
while(l SortUtil.swap(data,l,r); f`dQ $Kh  
SortUtil.swap(data,l,j); bCv^za]P6  
,1}c% C*,Q  
if((l-i)>THRESHOLD){ F"k.1.  
stack[++top]=i; ?Z ]5 [  
stack[++top]=l-1; U{+<c [  
} aWe?n;  
if((j-l)>THRESHOLD){ ;E"TOC  
stack[++top]=l+1; gg-4ce/  
stack[++top]=j; ^` 96L  
} 8N8N)#A[  
|N{?LKR %  
} d'4^c,d  
file://new InsertSort().sort(data); eiNF?](3O  
insertSort(data); _wC4n }J  
} :j}]nS  
/** )9.i'{{ 0  
* @param data /Lf+*u>"  
*/ Z uh!{_x;  
private void insertSort(int[] data) { / p_mFA]@  
int temp; U',9t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [M7&  
} [HV>4,,3"  
} Y ~|C]O  
} mkR1iY  
s C/5N  
} 1h"CjOp,7  
u9.x31^  
归并排序: :2qUel\PEC  
Zi0B$3iOb  
package org.rut.util.algorithm.support; :KJG3j?   
B_^ ~5_0:  
import org.rut.util.algorithm.SortUtil; %(c5T)B9  
@bc=O1vX~;  
/** ]7*Z'E  
* @author treeroot lO Rym:P  
* @since 2006-2-2 L7_qs+  
* @version 1.0 qM."W=XVN  
*/ _x.<Zc\x  
public class MergeSort implements SortUtil.Sort{ ~s :M l  
DQ<{FN  
/* (non-Javadoc) 8hTtBa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qMk"i@"  
*/ `qNhB\  
public void sort(int[] data) { lcv&/ A  
int[] temp=new int[data.length]; tAPr4n!  
mergeSort(data,temp,0,data.length-1); (&=<UGY(w  
} _;;'/rs j  
9WJS.\G^  
private void mergeSort(int[] data,int[] temp,int l,int r){ DPU%4te  
int mid=(l+r)/2; i|@lUXBp  
if(l==r) return ; )CYm/dk  
mergeSort(data,temp,l,mid); )4[Yplo  
mergeSort(data,temp,mid+1,r); U_-9rkUa  
for(int i=l;i<=r;i++){ M!{;:m28X!  
temp=data; O3?3XB> <  
} hU:M]O0uw  
int i1=l; RjII(4Et  
int i2=mid+1; j2U iZLuV  
for(int cur=l;cur<=r;cur++){ bVB_KE  
if(i1==mid+1) y5td o'Ex  
data[cur]=temp[i2++]; sd@JQ%O  
else if(i2>r) 2WP73:'t  
data[cur]=temp[i1++]; i.|zKjF'  
else if(temp[i1] data[cur]=temp[i1++]; '^T Q Ubw  
else y?ps+ce93  
data[cur]=temp[i2++]; OZ/P@`kN.f  
} {Z529Ns  
} :GXD-6}^|  
\m>mE/N  
} QbF!V%+a's  
h83;}>  
改进后的归并排序: 'u \my  
Y7|R vLWoP  
package org.rut.util.algorithm.support;  h :[8$]  
[7K-L6X  
import org.rut.util.algorithm.SortUtil; -P+@n)?T6  
CaSoR |  
/** Ya#,\;dTT  
* @author treeroot b'D|p/)m0S  
* @since 2006-2-2 &a'H vQV  
* @version 1.0 (&2 5 8i,  
*/ {^r8uKo:~  
public class ImprovedMergeSort implements SortUtil.Sort { q8j W&_  
1;; is  
private static final int THRESHOLD = 10; #~&SkIhBE  
$.a4Og2  
/* W[5a'}OV  
* (non-Javadoc) >i`V-"x  
* F"3LG"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D{Zjo)&tF'  
*/ {,Y?+F  
public void sort(int[] data) { 2:31J4t-<  
int[] temp=new int[data.length]; ]kJinXHW  
mergeSort(data,temp,0,data.length-1); sH//*y  
} B74L/h  
Z!@<[Vo6  
private void mergeSort(int[] data, int[] temp, int l, int r) { WUVRwJ 5  
int i, j, k; 5h"moh9tG  
int mid = (l + r) / 2; ZyJdz+L{@V  
if (l == r) kRCuc}:SB  
return; 8Z=d+}Gg<  
if ((mid - l) >= THRESHOLD) //SH=>w2  
mergeSort(data, temp, l, mid); x@-bY  
else eXHk6[%[  
insertSort(data, l, mid - l + 1); +=XDNSw  
if ((r - mid) > THRESHOLD) (J c} K  
mergeSort(data, temp, mid + 1, r); ZT UaF4k j  
else MwoU>+XB  
insertSort(data, mid + 1, r - mid); 9?VyF'r=  
]Iku(<*Ya  
for (i = l; i <= mid; i++) { 9#:b+Amzz  
temp = data;  mN>7vJ  
} eR'Df" +  
for (j = 1; j <= r - mid; j++) { nUAoPE  
temp[r - j + 1] = data[j + mid]; $=7'Cm ?  
} 4LO U[D  
int a = temp[l]; 5t` :=@u  
int b = temp[r]; Pj4WWKX  
for (i = l, j = r, k = l; k <= r; k++) { -&PiD  
if (a < b) { *z2G(Uac  
data[k] = temp[i++]; bCM&Fe0GM  
a = temp; 8hx4s(1!  
} else { 0!WF,)/T7i  
data[k] = temp[j--]; h$#QRH  
b = temp[j]; K`=O!;  
} VDCG 5QP6(  
} '=|2, H]  
} =B}a +0u!  
W`baD!*  
/** _JlbVe[<  
* @param data +*dG 'U6  
* @param l MXS N <  
* @param i }gk37_}X\I  
*/ l 8I`%bu  
private void insertSort(int[] data, int start, int len) { gW{<:6}!*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'cs!(z-{x  
} KO`ftz3 +  
} k7rFbrL Z  
} % D]vKv~<  
} _l?InNv  
(!-gX" <b  
堆排序: KeU|E<|!  
9H@I<`qGC  
package org.rut.util.algorithm.support; R3nCk-Dq  
^/|agQ7D2  
import org.rut.util.algorithm.SortUtil; P8tpbdZE-  
l+6y$2QR  
/** }T@^wY_Ow  
* @author treeroot hdL/zW7]  
* @since 2006-2-2 Ls8@@b,t2  
* @version 1.0 R,mOV8y"W[  
*/ Fai_v{&?  
public class HeapSort implements SortUtil.Sort{ k lLhi<*  
#;9I3,@/Y  
/* (non-Javadoc) ?2hS<qXX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ekb9=/  
*/ ~H[  
public void sort(int[] data) { _ZM$&6EC  
MaxHeap h=new MaxHeap(); .Dn.|A  
h.init(data); pmm?Fq!s=  
for(int i=0;i h.remove(); U} EaV<  
System.arraycopy(h.queue,1,data,0,data.length); hlY]s &0  
} Lu.D,oP  
q^:>sfd  
private static class MaxHeap{ <Fkm7ME]  
x -wIgo+  
void init(int[] data){ pGQP9r%  
this.queue=new int[data.length+1]; MAhJ>qe8 p  
for(int i=0;i queue[++size]=data; k[TVu5R  
fixUp(size); mAycfa  
} j]-0m4QF  
} 3j'A.S  
3 [R<JrO  
private int size=0; VrV )qfG  
81m3j`b  
private int[] queue; /RVy?)hVT#  
\rXmWzl{  
public int get() { gN2$;hb?  
return queue[1]; @J`o pR  
} (IlHg^"  
.YV{wL@cB  
public void remove() { *&WkorByW  
SortUtil.swap(queue,1,size--); #BB,6E   
fixDown(1); ^?pf.E!F`  
} ;[-OMGr]#  
file://fixdown <evvNSE  
private void fixDown(int k) { {WBe(dc_%  
int j; #6t 4 vJ1  
while ((j = k << 1) <= size) { "r!>p\.0O  
if (j < size %26amp;%26amp; queue[j] j++; IM.sW'E  
if (queue[k]>queue[j]) file://不用交换 nkI+"$Rz0  
break; _n6ge*,E  
SortUtil.swap(queue,j,k); Z XCq>  
k = j; } tq  
} C5}c?=#bdf  
} 6`K R  
private void fixUp(int k) { ,2t|(V*"&  
while (k > 1) { $8/=@E{51  
int j = k >> 1; baLO~C  
if (queue[j]>queue[k]) L<t>o":o  
break; #[ei/p  
SortUtil.swap(queue,j,k); fL0dy[Ch@  
k = j; $Hw w  
} D-{;;<nIr`  
} 'eyzH[l,(  
lk.]!K$}  
} %7w=;]ym  
w=NM==cLj  
} " ^v/Y  
noSkKqP  
SortUtil: _&(\>{pm  
ldd8'2  
package org.rut.util.algorithm; -cgLEl1J  
#7 )&`  
import org.rut.util.algorithm.support.BubbleSort; 6MCLm.L  
import org.rut.util.algorithm.support.HeapSort; /{)}y  
import org.rut.util.algorithm.support.ImprovedMergeSort; C bWz;$r  
import org.rut.util.algorithm.support.ImprovedQuickSort; UB5CvM28  
import org.rut.util.algorithm.support.InsertSort; NCrNlH IF  
import org.rut.util.algorithm.support.MergeSort; Cz1Q@<)  
import org.rut.util.algorithm.support.QuickSort; / @v V^!#1  
import org.rut.util.algorithm.support.SelectionSort; 4>x$I9^Y!  
import org.rut.util.algorithm.support.ShellSort; /"(`oe<  
z3n273W>6  
/** hgYi ,e  
* @author treeroot JfOBZQ  
* @since 2006-2-2 a&^HvXO(>(  
* @version 1.0 ro&/  
*/ Vy.gr4Cm  
public class SortUtil { EZ,Tc ;f=  
public final static int INSERT = 1; 'CQ~ZV5  
public final static int BUBBLE = 2; iXoEdt)  
public final static int SELECTION = 3; yH=Hrz:<eM  
public final static int SHELL = 4; 1K* `i(  
public final static int QUICK = 5;  :EGvI  
public final static int IMPROVED_QUICK = 6; gGaA;YW1  
public final static int MERGE = 7; 8v<802  
public final static int IMPROVED_MERGE = 8; )WBp.j /#  
public final static int HEAP = 9; c)*,">$#  
{[|je ]3v  
public static void sort(int[] data) { g~7x+cu0  
sort(data, IMPROVED_QUICK); Arr(rM  
} VyMFALSe]h  
private static String[] name={ ?l> <?i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Vn=K5nm  
}; ?[Sac]h ys  
Cs!z3QU  
private static Sort[] impl=new Sort[]{ w"Q/ 6#!K  
new InsertSort(), 1"\^@qRv#  
new BubbleSort(), !:]/MpQ ?  
new SelectionSort(), {4F=].!  
new ShellSort(), QZh#&Qf;  
new QuickSort(), e2"<3  
new ImprovedQuickSort(), z|M+ FHl$  
new MergeSort(), C vOH*K'  
new ImprovedMergeSort(), @u>:(9bp  
new HeapSort() U/#X,Bi~  
}; ;aj4V<@  
.OM^@V~T  
public static String toString(int algorithm){ op2<~v0?  
return name[algorithm-1]; >;K!yI?0  
} "Wb>y*S   
QmKEl|/{u  
public static void sort(int[] data, int algorithm) { nk*T x  
impl[algorithm-1].sort(data); kEYkd@ {  
} LJgGX,Kp  
v:IpZ;^  
public static interface Sort { iW?z2%#  
public void sort(int[] data); qg06*$%  
} ip+?k<]z  
L eu93f2  
public static void swap(int[] data, int i, int j) { &cpqn2Z  
int temp = data; -=InGm\Y  
data = data[j]; <WiyM[ ep  
data[j] = temp; oypF0?!m  
}  NZu2D  
} Z ~3  
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