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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。 b*cVC^{Dy  
插入排序: 0C0ld!>r  
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package org.rut.util.algorithm.support; ujbJ&p   
p+:MZP -%(  
import org.rut.util.algorithm.SortUtil; o@r~KFIe  
/** r59BBW)M  
* @author treeroot U5H5QW+  
* @since 2006-2-2 qmbhx9V   
* @version 1.0 oMF[<Xf  
*/ 1K{hj%  
public class InsertSort implements SortUtil.Sort{ z;EDyd,O>  
 5f_1 dn  
/* (non-Javadoc) ]"U/3dL5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WVh]<?GWXk  
*/ K%NgZ(x(  
public void sort(int[] data) { tQIz  
int temp; kC0^2./p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !F# ^Peb  
} e `IL7$  
} &=v5M9GR]  
} ;C+ _KS  
e1 P(-V  
} =tqChw   
(l:LG"sy\  
冒泡排序: \Oa11c`6  
.\|}5J9W  
package org.rut.util.algorithm.support;  =E:a\r  
wL" 2Cm  
import org.rut.util.algorithm.SortUtil; >Gr,!yP  
=~{W;VZt'  
/** 2<^eVpNJR  
* @author treeroot cK1RmL"3  
* @since 2006-2-2 cAzlkh  
* @version 1.0 J"yq)0  
*/ <l^#FH  
public class BubbleSort implements SortUtil.Sort{ ZNY), 3?  
4XArpKA  
/* (non-Javadoc) u$y5?n|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8fQaMn4V  
*/ p(S {k]ZL@  
public void sort(int[] data) { ci{WyIh  
int temp; Ip;;@o&D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5s1XO*s)>X  
if(data[j] SortUtil.swap(data,j,j-1); oJVpJA0IA  
} t3;QF  
} D P+W* 87J  
} ' 8UhYwyr  
} to;cF6X  
$3{I'r]  
} ,IQ%7*f;O_  
Ia*T*q Ju  
选择排序: -v?)E S  
<~35tOpv  
package org.rut.util.algorithm.support; )r:gDd#/X  
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import org.rut.util.algorithm.SortUtil; 0`"DYJ}d  
RV, cQ K  
/** MF.$E?_R  
* @author treeroot c:_dW;MJ0  
* @since 2006-2-2 ;F\sMf{  
* @version 1.0 >&uR=Yd  
*/ LkUi^1((e  
public class SelectionSort implements SortUtil.Sort { ]d50J@W c  
qc@v"pIz'S  
/* uZ(,7>0  
* (non-Javadoc) t-$Hti7Lk  
* lhduK4u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qre(3,VE5  
*/ IyGW>g6_.  
public void sort(int[] data) { _&/2-3]\B  
int temp; 6eAJ >9@x  
for (int i = 0; i < data.length; i++) { =FXq=x%9+  
int lowIndex = i; t{Gc,S!]5  
for (int j = data.length - 1; j > i; j--) { \xexl1_;  
if (data[j] < data[lowIndex]) { XF Wo"%}w  
lowIndex = j; mA0|W#NB  
} -3&mgd  
} +{"w5o<CO  
SortUtil.swap(data,i,lowIndex); ]`_eaW?Ua  
} RWINdJZ  
} 0;x<0P  
5Z(#)sa0Og  
} L QA6iZBP  
1|xo4fmV  
Shell排序: HWi: CDgm  
H0Ck%5  
package org.rut.util.algorithm.support; /7p1y v  
.+dego:  
import org.rut.util.algorithm.SortUtil; =z +iI;  
}R2afTn[;  
/** #tlhH\Pr[  
* @author treeroot &=hkB9 ;  
* @since 2006-2-2 7xjihl3  
* @version 1.0 n% ={!WD  
*/ fIm=^}?fwK  
public class ShellSort implements SortUtil.Sort{ W3-g]#\?  
}-15^2  
/* (non-Javadoc) ,3FG' q2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {.D/MdwW;  
*/ f&L8<AS Fo  
public void sort(int[] data) { ^?o>(K  
for(int i=data.length/2;i>2;i/=2){ WS1$cAD2N  
for(int j=0;j insertSort(data,j,i); x$/: %"E  
} k{w  
} QKtVwsz +  
insertSort(data,0,1); )SsO,E+t=U  
} * 4RL  
Xrd-/('2  
/** T96M=?wh!  
* @param data ^DOQ+  
* @param j B5 H=#  
* @param i :`20i*  
*/ wBIhpiJX0  
private void insertSort(int[] data, int start, int inc) { SbN.z  
int temp; - <M'h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ck K9@RQ  
} W`` -/  
} OZi4S3k  
} K:8. Dvn  
uEcK0>xp  
} B*T;DE   
XI58Cy*!  
快速排序: g,d'&r"JWt  
b{hdEb  
package org.rut.util.algorithm.support; wQw y+S  
6V6,m4e  
import org.rut.util.algorithm.SortUtil; >q)VHV9P  
|!.VpN&  
/** bx=9XZ9g  
* @author treeroot HC/?o0  
* @since 2006-2-2 7Hzv-s  
* @version 1.0 7=[/J*-m  
*/ R?H[{A X  
public class QuickSort implements SortUtil.Sort{ &(YNz9L  
 NncII5z  
/* (non-Javadoc) &)#bdt[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7/GL@H  
*/ g RBbL1  
public void sort(int[] data) { f4r)g2Zb[  
quickSort(data,0,data.length-1); h^ =9R6im  
} [V_\SQV0  
private void quickSort(int[] data,int i,int j){ +DA ,|~k_  
int pivotIndex=(i+j)/2; sRDxa5<MD  
file://swap 4&+lc*  
SortUtil.swap(data,pivotIndex,j); `/L D:R  
TwLQ;Q  
int k=partition(data,i-1,j,data[j]); 7bC)Co#:   
SortUtil.swap(data,k,j); { K *  
if((k-i)>1) quickSort(data,i,k-1); 9>hK4&m^  
if((j-k)>1) quickSort(data,k+1,j); TxXX}6  
m. "T3K  
} El4SL'E@  
/** i.G"21M  
* @param data !+Us)'L  
* @param i e]@R'oM?#`  
* @param j w^wh|'u^_@  
* @return J^)=8cy  
*/ "=vH,_"Ql  
private int partition(int[] data, int l, int r,int pivot) { y?.l9  
do{ NB?y/v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z{ MO~d9  
SortUtil.swap(data,l,r); yjj)+eJ(Q  
} $|pD}  
while(l SortUtil.swap(data,l,r); w-?|6I}T  
return l; !<W^Fh  
} Tmr %r'i3  
Cso-WG,  
} ,%EGM+  
h1jEulcMtq  
改进后的快速排序: Z]x)d|3;  
+je{%,*  
package org.rut.util.algorithm.support; RI#o9d"x}  
~5sH`w~vQ  
import org.rut.util.algorithm.SortUtil; Lc5I?}:;L  
[ %:%C]4  
/** KW-g $Ma  
* @author treeroot pCt0[R;?  
* @since 2006-2-2 Z2^B.r#  
* @version 1.0 fe$OPl~  
*/ Ch,%xs.)G  
public class ImprovedQuickSort implements SortUtil.Sort { D ~LU3#n  
KG9FR*"  
private static int MAX_STACK_SIZE=4096; Zz@wbhMV  
private static int THRESHOLD=10; bFtzwa5Gc  
/* (non-Javadoc) Ab/KVB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vD'YLn%Q  
*/ qF57T>v|  
public void sort(int[] data) { \YrvH  
int[] stack=new int[MAX_STACK_SIZE]; 3~6,fTMz{  
kb2M3%6 V  
int top=-1; ?2i\E RG?  
int pivot; I!;vy/r  
int pivotIndex,l,r; YqNI:znm-  
SvN2}]Kh  
stack[++top]=0; gq[`g=x  
stack[++top]=data.length-1; _yP02a^2  
0o &B 7N  
while(top>0){ \>nY%*  
int j=stack[top--]; <Pg<F[eDM  
int i=stack[top--];  TDR2){I  
(Q~ (t  
pivotIndex=(i+j)/2; yOr5kWqX  
pivot=data[pivotIndex]; >a$b4 pvh  
,J ZM%f  
SortUtil.swap(data,pivotIndex,j); i $W E1-  
KmE<+/x~?  
file://partition o]O  
l=i-1; sm96Ye{O{  
r=j; 1G62Qu$O  
do{ 4oywP^I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t o2y#4'.  
SortUtil.swap(data,l,r); q;#:nf"  
} %;qDhAu0  
while(l SortUtil.swap(data,l,r); A!.* eIV|  
SortUtil.swap(data,l,j); xA {1XS}  
(X(c.Jj  
if((l-i)>THRESHOLD){ <Z^qBM  
stack[++top]=i; 5B,HJax  
stack[++top]=l-1; [>wvVv  
} :Yy8Ie#  
if((j-l)>THRESHOLD){ Aa`'g0wmc  
stack[++top]=l+1; JTI 'W  
stack[++top]=j; 19# A7  
} XbMAcgS  
k}$k6Sr"  
} l5fF.A7TT  
file://new InsertSort().sort(data); nk^-+olm  
insertSort(data); n,.t~  
} k%fy  
/** vB;$AFh{  
* @param data }}MZgm~U)  
*/ AagWswv{Bf  
private void insertSort(int[] data) { ("-`Y'"K  
int temp; nps"nggk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QQIU5  
} :dkBr@u96O  
} k>mqKzT0$+  
} ;OD+6@Sr  
SF?s^  
} Sw^-@w=!U5  
]`GDZw`  
归并排序: *, RxOz2=  
Oxq} dX7S  
package org.rut.util.algorithm.support; *Qe{CE  
Z5%TpAu[  
import org.rut.util.algorithm.SortUtil; -y5Z c?e  
2=p"%YSn  
/** B@@j-  
* @author treeroot Th(F^W9  
* @since 2006-2-2 n^7m^1to  
* @version 1.0 W99Hq1W;r  
*/ <;.->73E  
public class MergeSort implements SortUtil.Sort{ PZsq9;P$  
.vJ t&@NO  
/* (non-Javadoc) _z(ydL*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >( :b\*C  
*/ qc6eqE  
public void sort(int[] data) { Qpaan  
int[] temp=new int[data.length]; 8`S6BkfC|  
mergeSort(data,temp,0,data.length-1); p&4#9I5  
} @mu2,%  
jtF et{  
private void mergeSort(int[] data,int[] temp,int l,int r){ {P>%l\?  
int mid=(l+r)/2; 0nOp'Ky\k  
if(l==r) return ; =gb(<`{>  
mergeSort(data,temp,l,mid); [J6 b5  
mergeSort(data,temp,mid+1,r); r GxX]  
for(int i=l;i<=r;i++){ RS`~i8e'  
temp=data; BL Q&VI4  
} YMEI J}  
int i1=l; ,H+LE$=  
int i2=mid+1; &}/h[v_#'  
for(int cur=l;cur<=r;cur++){ ^&-H"jF  
if(i1==mid+1) ZFsJeF'"  
data[cur]=temp[i2++]; Q0cr^24/  
else if(i2>r) u]%>=N(^2  
data[cur]=temp[i1++]; 'ffOFIz|=I  
else if(temp[i1] data[cur]=temp[i1++]; !NfN16  
else Rf .b_Y@O  
data[cur]=temp[i2++]; L_4Zx sIv  
} m&X6a C'[  
} o I6o$C  
3x{2Dhi  
} FTfejk!  
H D95>%  
改进后的归并排序: _2C[F~ +l  
2AZ)|dM'`  
package org.rut.util.algorithm.support; V*U*_Y  
:*wjC.Z  
import org.rut.util.algorithm.SortUtil; _hb@O2f  
;uazQyo6  
/** YN@ 4.&RP  
* @author treeroot %95'oW)lo  
* @since 2006-2-2 U'tfsf/V  
* @version 1.0 ;Pi-H,1b  
*/ Sn lKPd  
public class ImprovedMergeSort implements SortUtil.Sort {  4[] /  
"x)xjL  
private static final int THRESHOLD = 10; HRY?[+  
CL-mt5Kx#7  
/* L9=D,C~  
* (non-Javadoc) /\_wDi+#  
* xE4iey@\}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *4tJ|m6"Y6  
*/ ~yvOR`2Gg  
public void sort(int[] data) { i@C$O.m(  
int[] temp=new int[data.length]; '~ {xn  
mergeSort(data,temp,0,data.length-1); < <vE.  
} lV0\UySH  
h^D]@H  
private void mergeSort(int[] data, int[] temp, int l, int r) { - ^sbf.  
int i, j, k; 9(/ ;Wutj"  
int mid = (l + r) / 2; M9/c8zZ  
if (l == r) YIQm;E EG  
return; 8,,$C7"EP  
if ((mid - l) >= THRESHOLD) :2KLziO2  
mergeSort(data, temp, l, mid); >_4Ck{^d#  
else ?T(>!m  
insertSort(data, l, mid - l + 1); z$>_c "D  
if ((r - mid) > THRESHOLD) fb8t9sAI  
mergeSort(data, temp, mid + 1, r); (IXe5 55  
else Q/,bEDc&  
insertSort(data, mid + 1, r - mid); =k1 ,jn+  
Q6G-`&5  
for (i = l; i <= mid; i++) { 2h6<'2'o1  
temp = data; @L-3&~=  
} O,kzU,zOs  
for (j = 1; j <= r - mid; j++) { ho7L@NR  
temp[r - j + 1] = data[j + mid]; 9N[PZD  
} hK,e<?N^  
int a = temp[l]; m"<Sb,"x!  
int b = temp[r]; ORV~F0d<  
for (i = l, j = r, k = l; k <= r; k++) { SJtQK-%wK>  
if (a < b) { Qv%"iSe~J  
data[k] = temp[i++]; 0 7CufoI  
a = temp; |-HV@c]  
} else { {1Z`'.FU  
data[k] = temp[j--]; YFVNkB O%  
b = temp[j]; k(oHmw  
} !c+Nf2I7S  
} Z. ))=w6G  
} DB'd9<  
TRl,L5wd-?  
/** e `!PQMLU  
* @param data 1N_Gk&  
* @param l 1jJ>(S  
* @param i nl)!)t=n  
*/ XA~Cc<v  
private void insertSort(int[] data, int start, int len) { 3Ms ` ajJ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |=^p`CT  
} P9)E1]Dc$  
} iINd*eXb^  
} Ny@CP}  
} G`B e~NU  
;/ iBP2  
堆排序: lw4#xH-?  
 fWx %?J  
package org.rut.util.algorithm.support; CfguL@tR.  
:esHtkyML  
import org.rut.util.algorithm.SortUtil; SO #NWa<0|  
i+$G=Z#3E  
/** BitP?6KX  
* @author treeroot B&~#.<23:  
* @since 2006-2-2  R\%&Q|  
* @version 1.0 2nW:|*:/p6  
*/ 3[g%T2&[  
public class HeapSort implements SortUtil.Sort{ S <C'#vj  
p&SxR}h  
/* (non-Javadoc) j~(s3pSCo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d%:B,bck  
*/ ,9I %t%sb  
public void sort(int[] data) { uXX3IE[  
MaxHeap h=new MaxHeap(); o5 UM)g  
h.init(data); +>#SB"'  
for(int i=0;i h.remove(); v=A ]#O%  
System.arraycopy(h.queue,1,data,0,data.length); zI5 #'<n  
} Zl69d4vG  
?MT V!i0  
private static class MaxHeap{ O,`#h*{N  
9E/{HNkf  
void init(int[] data){  2D;,'  
this.queue=new int[data.length+1]; w-%V9]J1  
for(int i=0;i queue[++size]=data; $4^cbk  
fixUp(size); =IQ+9Fl2  
} q6 h'=By  
} "@1e0`n Q  
P|> fO'  
private int size=0; Yv?nw-HM  
!}Sf?n P#  
private int[] queue; >wz& {9ni  
Gkz\By  
public int get() { >h^CC*&'pw  
return queue[1]; u^DfRd&P0  
} LUGyc( h  
hk =nXv2M  
public void remove() { D# ZzhHHP  
SortUtil.swap(queue,1,size--); ;GW[Yw>Rz  
fixDown(1); O)y|G%O  
} J<g$hk  
file://fixdown !^{0vFWE  
private void fixDown(int k) { D00I!D16  
int j; B?BB  
while ((j = k << 1) <= size) { m0}Pq{ g  
if (j < size %26amp;%26amp; queue[j] j++; 00Tm]mMQX  
if (queue[k]>queue[j]) file://不用交换 >WfkWUb  
break; OAoTsqj6  
SortUtil.swap(queue,j,k); ~*OQRl6F  
k = j; \J*~AT~5q  
} (twwDI  
} p"A2N +  
private void fixUp(int k) { 5K_KZL-  
while (k > 1) { N/wUP  
int j = k >> 1; X$aN:!1  
if (queue[j]>queue[k]) F't4Q  
break; x=1Iuc;&3  
SortUtil.swap(queue,j,k); [$PW {d8|  
k = j; @>>8CU^~  
} :@BAiKa[wa  
} G(g`>' m  
dQX<X}  
} 5*M3sN  
>?-etl  
} x$:>W3?T=^  
C`qo  
SortUtil: `w&Y[8+E  
uw!w}1Y]}2  
package org.rut.util.algorithm; J7Z`wjX1  
:<t%Sf  
import org.rut.util.algorithm.support.BubbleSort; cK( )_RB#  
import org.rut.util.algorithm.support.HeapSort; sGg=4(D  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5c(mgEvq  
import org.rut.util.algorithm.support.ImprovedQuickSort; Un [olp  
import org.rut.util.algorithm.support.InsertSort; s"hSn_m  
import org.rut.util.algorithm.support.MergeSort; \"L ;Ct 8  
import org.rut.util.algorithm.support.QuickSort; e70#"~gt[  
import org.rut.util.algorithm.support.SelectionSort; _ELuQ>zM]+  
import org.rut.util.algorithm.support.ShellSort; MIV<"A  
L="ipM:Z  
/** !V<c:6"  
* @author treeroot ORVFp]gG  
* @since 2006-2-2 >XTDN  
* @version 1.0 $KSdNFtM)A  
*/ GyirE`  
public class SortUtil { MHl ffj  
public final static int INSERT = 1; U +c ?x2\  
public final static int BUBBLE = 2; UE:';(t  
public final static int SELECTION = 3; |6]2XW  
public final static int SHELL = 4; bl8zcpdL  
public final static int QUICK = 5; +JyD W%a:L  
public final static int IMPROVED_QUICK = 6; OoW,mmthj>  
public final static int MERGE = 7; XH^X4W  
public final static int IMPROVED_MERGE = 8; 54X=58Q  
public final static int HEAP = 9; |hx"yy'ux  
ld*W\  
public static void sort(int[] data) { h/'b(9fS  
sort(data, IMPROVED_QUICK); CcGE4BB  
} sBN"eHg  
private static String[] name={ QcW6o,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" , %8keGhl  
}; LS"_-4I}  
_wp>AJ r  
private static Sort[] impl=new Sort[]{ @ Sq =q=S  
new InsertSort(), prIPPeMdz  
new BubbleSort(), a ~  
new SelectionSort(), !?AgAsSmc  
new ShellSort(), V-1H(wRu  
new QuickSort(), 5|nT5oS  
new ImprovedQuickSort(), 4q9+a7@  
new MergeSort(), Yz%AKp  
new ImprovedMergeSort(), |:H 9#=  
new HeapSort() L=7Y~aL=  
}; p`+=) n  
[8kufMY|  
public static String toString(int algorithm){ `;`fA|F^  
return name[algorithm-1]; VVd9VGvh  
} [6ycs[{!  
4Nb&(p  
public static void sort(int[] data, int algorithm) { *KMW6dg;  
impl[algorithm-1].sort(data); =,MX%-2  
} 8;%F-?  
1<9=J`(H  
public static interface Sort { b0(bL_,  
public void sort(int[] data); sKg IKYG}T  
} Oax6_kmOj  
pr=f6~Z-y  
public static void swap(int[] data, int i, int j) { A$JL"~R  
int temp = data; .RazjXAY  
data = data[j]; j7(S=  
data[j] = temp; E Pd9'9S  
} rtjUHhF  
} ZwFVtR  
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