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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。 )H]L/n  
插入排序: QKEtV  
IhK SwT  
package org.rut.util.algorithm.support; &?Erkc~#  
E@otV6Wk[@  
import org.rut.util.algorithm.SortUtil; !0? B=yA  
/** #b&tNZ4!_  
* @author treeroot VJw7defc  
* @since 2006-2-2 &n8Ja@Y]  
* @version 1.0 I)#8}[vK  
*/ rSt5 @f?  
public class InsertSort implements SortUtil.Sort{ vO$cF*  
m;4ti9  
/* (non-Javadoc) _(?`eWo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K_ymA,&()  
*/ _#v"sGmN  
public void sort(int[] data) { l]D $QT3  
int temp; 'bLP#TAzf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t90M]EAV  
} {hOS0).(w7  
} (Nz`w  
} >&e=0@?+G  
Nz3+yxv1  
} $Bncdf  
z.SKawm6T  
冒泡排序: XM+.Hel  
i"n_oO  
package org.rut.util.algorithm.support; ha;fxM]  
+1yi{!j1  
import org.rut.util.algorithm.SortUtil; LKI\(%ba#  
,<K+.7,)E  
/** ZY7-.  
* @author treeroot V,VL?J\  
* @since 2006-2-2 bJ 6ivz  
* @version 1.0 e0TxJ*  
*/ ny+r>>3Td  
public class BubbleSort implements SortUtil.Sort{ mzM95yQ^Z  
ZZ{c  
/* (non-Javadoc) T#!% Uzz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jK/F zD0-  
*/ "|J6*s   
public void sort(int[] data) { />8A?+g9u  
int temp; "3]}V=L<5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \ ;]{`  
if(data[j] SortUtil.swap(data,j,j-1); e(^I.`9z  
} MC,Qv9m  
} oDD"h,Z  
} !hfpa_5  
} EUI*:JU-  
:+>7m  
} ;*zLf 9i  
5*A5Y E-  
选择排序: Q3=5q w^  
y2?9pVLa\y  
package org.rut.util.algorithm.support; PHT<]:"`<  
'l!\2Wv2  
import org.rut.util.algorithm.SortUtil; l,Y5VGiH#  
Oprfp^L  
/** *szs"mQ/  
* @author treeroot I:oEt  
* @since 2006-2-2 Ebj0 {ZL  
* @version 1.0 w[l#0ZZ  
*/ rxMo7px@}I  
public class SelectionSort implements SortUtil.Sort { d>I)_05t  
NTZ3Np`  
/* w+j\Py_G"  
* (non-Javadoc) 2.Ww(`swL  
* v4E=)?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'l\PL1  
*/ >oyf i:  
public void sort(int[] data) { bcT_YFLQ  
int temp; rxol7"2l  
for (int i = 0; i < data.length; i++) { ??B!UXi4R  
int lowIndex = i; UMNNAX  
for (int j = data.length - 1; j > i; j--) { |Fze9kZO  
if (data[j] < data[lowIndex]) { H!}L(gjEG  
lowIndex = j; z}-R^"40  
} ):tv V  
} z]%@r 7  
SortUtil.swap(data,i,lowIndex); =ZU!i0 K  
} W\Scak>  
} a]P%Y.? r  
<4;, y*"n  
} DC> R  
RJ0,7 E<B  
Shell排序: D5Sbs(  
60%fva  
package org.rut.util.algorithm.support; Jpp-3i.F#  
IMdp"  
import org.rut.util.algorithm.SortUtil; Z)~?foe'  
OOIp)=4  
/** ,Js_d  
* @author treeroot :O@n6%pSL  
* @since 2006-2-2 (JdheCq!x  
* @version 1.0 &-^*D%9  
*/ (Dv GA I  
public class ShellSort implements SortUtil.Sort{ ?(B}w*G~  
"38<14V  
/* (non-Javadoc) OA9 P"*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 91&=UUkK?  
*/ sVP\EF8PY  
public void sort(int[] data) { gzVZPvTPE  
for(int i=data.length/2;i>2;i/=2){ P%yL{  
for(int j=0;j insertSort(data,j,i); kzUj)  
} Oz_CEMcy  
} -*w2<DCn  
insertSort(data,0,1); q3/4l%"X  
} ^fd*KM  
Ho/tCU|w  
/** G.XxlI}  
* @param data a(O@E%|u  
* @param j s8]%L4lvu  
* @param i H@zv-{}T8  
*/ (ESFR0  
private void insertSort(int[] data, int start, int inc) { U)-aecB!  
int temp; "N &ix*($  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7u^wO<  
} [D+PDR  
} GFbn>dY  
} G] tT=X[  
<x;g9Z>(  
} jM6$R1HX  
] X]!xvN@  
快速排序: B&59c*K  
$?:IRgAr  
package org.rut.util.algorithm.support; .@mZG<vg  
W6EEC<$JL  
import org.rut.util.algorithm.SortUtil; im:[ViR {  
9%ct   
/** s2N'Ip  
* @author treeroot q2*)e/}H  
* @since 2006-2-2 ]!P6Z?  
* @version 1.0 Qz{Vl> "  
*/ BSSehe*  
public class QuickSort implements SortUtil.Sort{ .uX(-8n ~  
~v/` `s  
/* (non-Javadoc) Z(4/;v <CT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j&A9 &+w  
*/ u}R|q  
public void sort(int[] data) { MxGQM>  
quickSort(data,0,data.length-1); /#_[{lSr?  
} l1 08.ao  
private void quickSort(int[] data,int i,int j){ r SoT]6/   
int pivotIndex=(i+j)/2; x?0(K=h,  
file://swap p.4Sgeh#  
SortUtil.swap(data,pivotIndex,j); ^HP$r*  
;*Y+.?>a  
int k=partition(data,i-1,j,data[j]); t*BCpC }  
SortUtil.swap(data,k,j); *)\y52z  
if((k-i)>1) quickSort(data,i,k-1); 5$Kv%U  
if((j-k)>1) quickSort(data,k+1,j); x3 Fn'+  
GP ^^ K  
} Eqny'44  
/** %(? ;`  
* @param data ?_S);  
* @param i {ByKTx &  
* @param j Q(1R=4?.Z  
* @return [!KsAsmk  
*/ A~?)g!tS<  
private int partition(int[] data, int l, int r,int pivot) { E'8XXV^I?P  
do{ 9 s2z=^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); FRPdfo37  
SortUtil.swap(data,l,r); TDP Q+Kg_  
} /N/jwLr  
while(l SortUtil.swap(data,l,r); 1#>uqUxah  
return l; 8BS Nm  
} u, 72Mm>  
r`)'Kd  
} +['1~5  
n^G[N-\3  
改进后的快速排序: OaN"6Ge#  
^eRbp?H*T  
package org.rut.util.algorithm.support; [["eK9 }0  
]4*E:  
import org.rut.util.algorithm.SortUtil; )r*F.m{&:  
5PpS/I:on  
/** jM{5nRQ  
* @author treeroot 4|eI_u{_  
* @since 2006-2-2 @Y9tkJIt  
* @version 1.0 5wvh @Sc\  
*/ cUi6 On1C  
public class ImprovedQuickSort implements SortUtil.Sort { hG9Mp!d91  
h;cw=G  
private static int MAX_STACK_SIZE=4096; KUq(&H7  
private static int THRESHOLD=10; =7~;*Ts  
/* (non-Javadoc) #.}&6ZP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *a(GG  
*/ [Q8vS;.  
public void sort(int[] data) { G&6`?1k  
int[] stack=new int[MAX_STACK_SIZE]; /W}"/W9  
YB{'L +Wbw  
int top=-1; #iD`Bg!VXc  
int pivot; PEKXPF N  
int pivotIndex,l,r; KlwB oC/{K  
Z y6kA\q  
stack[++top]=0; Fb{HiU9<!  
stack[++top]=data.length-1; 1[RI 07g7*  
VF<VyWFC0`  
while(top>0){ R\6dvd  
int j=stack[top--]; #N97  
int i=stack[top--]; ^v3J ld  
!.|A}8nK  
pivotIndex=(i+j)/2; \/ Zo*/  
pivot=data[pivotIndex]; &y3;`A7,  
KC<K*UHPAH  
SortUtil.swap(data,pivotIndex,j); 2XjH1  
shY8h   
file://partition 1)-VlQK p  
l=i-1; <@n3vO6  
r=j; `,c~M  
do{ E.x<J.[Y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `P;3,@ e  
SortUtil.swap(data,l,r); AY9#{c>X  
} IJZx$8&A  
while(l SortUtil.swap(data,l,r); 1l}fX}5%I;  
SortUtil.swap(data,l,j); d=HD! e  
niPqzi  
if((l-i)>THRESHOLD){ yyVE%e5nl  
stack[++top]=i; Z+FhI^  
stack[++top]=l-1; Fdx4jc13w  
} ]e? L,1-  
if((j-l)>THRESHOLD){ ?Bd6<F -G  
stack[++top]=l+1; G$lE0_j2{  
stack[++top]=j; d8^S~7  
} sg<c1  
a7z% )i;Z  
} Nqj5,9*c  
file://new InsertSort().sort(data); JWxSN9.X  
insertSort(data); ae+*gkPv8  
} 'z};tIOKJk  
/** c8o2* C$  
* @param data -}>H3hr  
*/ > mP([]  
private void insertSort(int[] data) { AD'c#CT  
int temp; ,YrPwdaTB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !3*%-8bp  
} RE;)#t?K  
} G|UeR=/  
} r)dXcus  
zwlz zqV  
} (6)X Fp&  
o<Rrr,  
归并排序: ;Z&w"oSJ  
j|r$ ! gV  
package org.rut.util.algorithm.support; *.-qbwOg  
OV7SLf  
import org.rut.util.algorithm.SortUtil; +L=a\8Ep  
pG$l   
/** S <++eu  
* @author treeroot !!v9\R4um  
* @since 2006-2-2 Q3LScpp  
* @version 1.0 `S]DHxS  
*/ B!1L W4^  
public class MergeSort implements SortUtil.Sort{ ","to  
DPlmrN9@=  
/* (non-Javadoc) XiyL563gh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,LDdL  
*/ &WVRh=R  
public void sort(int[] data) { >% E=l  
int[] temp=new int[data.length]; ;E\e.R  
mergeSort(data,temp,0,data.length-1); 1KI5tf>>p  
} "A}2iI  
p xQh;w  
private void mergeSort(int[] data,int[] temp,int l,int r){ \.`{nq  
int mid=(l+r)/2; O6\t_.  
if(l==r) return ; \r\wqz7  
mergeSort(data,temp,l,mid); d((,R@N'  
mergeSort(data,temp,mid+1,r); ?Aky!43  
for(int i=l;i<=r;i++){ TmgSV#G  
temp=data; $w! v  
} t&(\A,ch%  
int i1=l; N6/;p]|  
int i2=mid+1; wg KM6?  
for(int cur=l;cur<=r;cur++){ $"{I| UFC  
if(i1==mid+1) X}]g;|~SN  
data[cur]=temp[i2++]; FzQ6UO~'  
else if(i2>r) m^1'aO_;q  
data[cur]=temp[i1++]; 9Qc=D"'  
else if(temp[i1] data[cur]=temp[i1++]; ' "o2;J)7  
else 24d{ol)  
data[cur]=temp[i2++]; 2P VQSwW:  
} esHcE{GNOS  
} TZE;$:1vx>  
I !g+K  
} Vs&Ul6@N  
4]ETF+   
改进后的归并排序: q<Wz9lDMNR  
2!6-+]tC  
package org.rut.util.algorithm.support; Q|W~6  
RjG=RfB'V  
import org.rut.util.algorithm.SortUtil; Wg=4`&F^  
0/b3]{skK  
/**  LhtA]z,m  
* @author treeroot G\H|\i  
* @since 2006-2-2 U$6(@&P!  
* @version 1.0 >Te h ?P  
*/ W0 N*c*k  
public class ImprovedMergeSort implements SortUtil.Sort { 2[Bw+<YA`  
|&0Cuwt  
private static final int THRESHOLD = 10; T2MXwd&l  
w O*x0$  
/* w?A6S-z  
* (non-Javadoc) p!p:LSk"/b  
* tD3v`Ke  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [O^mG 9  
*/ <FU1|  
public void sort(int[] data) { =_9grF-  
int[] temp=new int[data.length]; N/eFwv.Er  
mergeSort(data,temp,0,data.length-1); z%[^-l-  
} 5^GrG|~  
:LX (9f   
private void mergeSort(int[] data, int[] temp, int l, int r) { [|oOP$u  
int i, j, k; JCZ5q9b  
int mid = (l + r) / 2; kk7M$)>d  
if (l == r) E'F87P^>  
return; 4j-%I7  
if ((mid - l) >= THRESHOLD) s7na!A[  
mergeSort(data, temp, l, mid); oD7^9=#  
else _[u fH*  
insertSort(data, l, mid - l + 1); JI[9c,N  
if ((r - mid) > THRESHOLD) sGFC?1r?\  
mergeSort(data, temp, mid + 1, r); OA8iTn  
else aX(Y `g)|  
insertSort(data, mid + 1, r - mid); T Ue=Yj  
`>skcvkm  
for (i = l; i <= mid; i++) { rsC^Re:*jr  
temp = data; f-a+&DB9  
} {t QZqqdn@  
for (j = 1; j <= r - mid; j++) { 7& G#&d  
temp[r - j + 1] = data[j + mid]; v L!?4k  
} f!+G1z}iA  
int a = temp[l]; :,FI 6`  
int b = temp[r]; M07==R7  
for (i = l, j = r, k = l; k <= r; k++) { ev%}\^Vl[  
if (a < b) { }1pG0V4  
data[k] = temp[i++]; #)EVi7UP  
a = temp; j\@osjUu  
} else { 'mU7N<Q$qQ  
data[k] = temp[j--]; ,L9ioYbp  
b = temp[j]; 9|1J pb  
} *WZ?C|6+  
} (eF "[,z  
} }C9P--  
Rkz[x  
/** szU_,.\  
* @param data '7/c7m/$X<  
* @param l W)m\q}]FYz  
* @param i -4nSiI  
*/ J:Ncy}AO  
private void insertSort(int[] data, int start, int len) { bf-V Q7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y@R9+ 7!  
} ,lr\XhO  
} EZg$mp1  
} %L eZd}v  
} .z&,d&E  
k<!xOg  
堆排序: -@yu 9=DT  
I\:(`)"r  
package org.rut.util.algorithm.support; t {RdqAF  
=6LF_=}  
import org.rut.util.algorithm.SortUtil; $g!~T!p=  
oBZzMTPe  
/** i4^1bd  
* @author treeroot -|nHwSrCZ/  
* @since 2006-2-2 Iji9N!Yx  
* @version 1.0 =P\Tk)(`  
*/ kMY1Xb  
public class HeapSort implements SortUtil.Sort{ [_wenlkm  
"`8~qZ7k  
/* (non-Javadoc) ?wYvBFRn7"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K1*]6x,  
*/ 3lD1G~  
public void sort(int[] data) { |\_d^U &`  
MaxHeap h=new MaxHeap(); fPu,@ L  
h.init(data); ^TCgSi7k`L  
for(int i=0;i h.remove(); qJPEq%'Q  
System.arraycopy(h.queue,1,data,0,data.length); w.6Gp;O  
} %q)*8  
QpC,komLJ  
private static class MaxHeap{ .cA'6J"Bm\  
:bV1M5  
void init(int[] data){ DQRr(r~2Kj  
this.queue=new int[data.length+1]; >xJh!w<pB  
for(int i=0;i queue[++size]=data; w,v~  
fixUp(size); 9$oU6#U,h  
} 1feS/l$  
} pXv@ QD#!  
t (>}  
private int size=0; &S|%>C{P.w  
XDcA&cM}p  
private int[] queue; EAi!"NJ  
|#_`aT"  
public int get() { Eggdj+  
return queue[1]; wEJ) h1=)^  
} s`Z'5J;S  
! Al?B9KJ  
public void remove() { 22gk1'~dO  
SortUtil.swap(queue,1,size--); .S =^)  
fixDown(1); ?cdjQ@j~h  
} 9XSZD93L  
file://fixdown us TPr  
private void fixDown(int k) { ~Dz`O"X3  
int j; ?*h 2:a$  
while ((j = k << 1) <= size) { &m J +#vT  
if (j < size %26amp;%26amp; queue[j] j++; h8me.=S&  
if (queue[k]>queue[j]) file://不用交换 WC<K(PP  
break; qS{E+)P  
SortUtil.swap(queue,j,k); s#*T(pY  
k = j; [h^>Iq (Z  
} DsZBhjCB  
} 4OOH 3O  
private void fixUp(int k) { pk,]yi,ZF  
while (k > 1) { ,]UCq?YW)T  
int j = k >> 1; 3Sb'){.MT+  
if (queue[j]>queue[k]) , e6}p  
break; //_aIp  
SortUtil.swap(queue,j,k); Q7vTTn\  
k = j; cXY;Tw45  
} mqFo`Ee  
} 7@*l2edXm+  
E=9xiS  
} ,J63 ?EQ3  
+^\TG>le  
} 1ehl=WN  
i^zncDMA  
SortUtil: ]&mN~$+C  
uO,9h0y0W  
package org.rut.util.algorithm; E,nxv+AQ  
q;<=MO/  
import org.rut.util.algorithm.support.BubbleSort; m5/d=k0l  
import org.rut.util.algorithm.support.HeapSort; B"rfR_B2M#  
import org.rut.util.algorithm.support.ImprovedMergeSort; f8c'`$O  
import org.rut.util.algorithm.support.ImprovedQuickSort; bb ]r  
import org.rut.util.algorithm.support.InsertSort; 6bXR?0$*M.  
import org.rut.util.algorithm.support.MergeSort; ToVi;  
import org.rut.util.algorithm.support.QuickSort; ;&N=t64"  
import org.rut.util.algorithm.support.SelectionSort; 2a 3RRP  
import org.rut.util.algorithm.support.ShellSort; WFTXSHcG  
5!pof\/a  
/** NEb M>1>^  
* @author treeroot [G/ti&Od^  
* @since 2006-2-2 =K ctAR;  
* @version 1.0 5RysN=czA  
*/ <@puWm[p  
public class SortUtil { >m-VBo  
public final static int INSERT = 1; BlrZ<\-/  
public final static int BUBBLE = 2; (ndTEnpp  
public final static int SELECTION = 3; L~u@n24  
public final static int SHELL = 4; !iO%?nW;  
public final static int QUICK = 5; S);SfNh%CL  
public final static int IMPROVED_QUICK = 6; )*wM DM5q  
public final static int MERGE = 7; E1&9( L5  
public final static int IMPROVED_MERGE = 8; +%%Ef]  
public final static int HEAP = 9; }+{ ? Ms  
} qf=5v  
public static void sort(int[] data) { f=L&>X  
sort(data, IMPROVED_QUICK); | pA  
} g$N/pg2>cT  
private static String[] name={ [10y13  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6|Qg=4_FHt  
}; s G6ts,={  
t(R Jc  
private static Sort[] impl=new Sort[]{ Mt93YD-2+  
new InsertSort(), :~Z -K\  
new BubbleSort(), }CCTz0[D"  
new SelectionSort(), H>qw@JiO!  
new ShellSort(), aGR!T{`   
new QuickSort(), "nzQ$E>?$  
new ImprovedQuickSort(), 9 Y-y?Y  
new MergeSort(), J:!m49fF  
new ImprovedMergeSort(), p!OCF]r  
new HeapSort() dN%*-p(  
}; Fzc8)*w  
8`{)1.d5[  
public static String toString(int algorithm){ 'kC,pN{->  
return name[algorithm-1]; m'b9 f6  
} MN.h,^b  
Ddr.kXIpo  
public static void sort(int[] data, int algorithm) { 2.>WR~ \  
impl[algorithm-1].sort(data);  4.7 PL  
} y_7lSo8<  
QQPT=_P]  
public static interface Sort { Mkj`  
public void sort(int[] data); |K(2_Wp  
} jgW-&nK!  
vo]!IY  
public static void swap(int[] data, int i, int j) { `;7eu=  
int temp = data; 6Bop8B  
data = data[j]; bl8EzO  
data[j] = temp; ^]cl:m=*  
} =,])xzG%  
} T{"[Ih3Mbl  
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