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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。 eV;r /4  
插入排序: i_Kwxn$  
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package org.rut.util.algorithm.support; Ss3p6%V/  
Wn%P.`o#  
import org.rut.util.algorithm.SortUtil; om3 %\  
/** E)"19l|}B  
* @author treeroot k[6J;/  
* @since 2006-2-2 B}e/MlX3M  
* @version 1.0 nzq   
*/ rTPgHK]?l  
public class InsertSort implements SortUtil.Sort{  ~?ab_CY  
^7gGtz2  
/* (non-Javadoc) zj 6I:Q r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fPR_ 3qgQ  
*/ _y@ 28t  
public void sort(int[] data) { Y]z :^D  
int temp; <r%K i`u(p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +;N]34>S7  
} Q@D7 \<t  
} r $7.  
} &D, Iwq  
AIF ?>wgq  
} { 3G  
bLqy7S9x  
冒泡排序: agIqca;  
DUp`zW;B  
package org.rut.util.algorithm.support; p{f R$-d  
HJL! ;i  
import org.rut.util.algorithm.SortUtil; ,OE&e* 1  
Hon2;-:]{]  
/** |'^s3i&w  
* @author treeroot %iyc1]w{  
* @since 2006-2-2 E^F"$Z" N  
* @version 1.0 DfXkLOGik  
*/ tOwn M1 :(  
public class BubbleSort implements SortUtil.Sort{ !_QI<=X  
f|[7LIdh-  
/* (non-Javadoc) Sj+H{xJi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g4K+AK  
*/ iw@rW5%'~  
public void sort(int[] data) { L9b.D<  
int temp; u3T-U_:jSV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZmA}i`  
if(data[j] SortUtil.swap(data,j,j-1); 7?P'f3)fG  
} /MZ<vnN7f  
} W .a>K$  
} i3-5~@M  
} M/ 3;-g  
m+QS -woHn  
} #s)f3HU>  
o9kJ90{D=  
选择排序: ,K5K?C$k  
_4{0He`q  
package org.rut.util.algorithm.support; 73Dxf -  
!:{Qbv&T  
import org.rut.util.algorithm.SortUtil; wNB?3v{n  
^<;W+dWdU  
/** AHf 9H?  
* @author treeroot tUu ' gs|  
* @since 2006-2-2 '+Dsmoy  
* @version 1.0 #S>N}<>  
*/ lhUGo =  
public class SelectionSort implements SortUtil.Sort { dOjly,!  
pF;.nt)  
/* l`v5e"V  
* (non-Javadoc)  2&6D`{"P  
* TTf j 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NdK`-RT  
*/ cVi_#9u"  
public void sort(int[] data) { ~OD6K`s3  
int temp; X3:1KDVsV  
for (int i = 0; i < data.length; i++) { "~r<ZG  
int lowIndex = i; t]xz7VQ  
for (int j = data.length - 1; j > i; j--) { ,Ag{-&  
if (data[j] < data[lowIndex]) { hY)zKX_r  
lowIndex = j; 0'sZ7f<e7  
} pa-*&p  
} D#GuF~-F!R  
SortUtil.swap(data,i,lowIndex); R iZ)FW  
} GT6; I7  
} n:AZ(f   
ib,`0=0= O  
} 6IqPZ{g9K'  
9Po>laT 5  
Shell排序: 8mX!mYO3c  
3.Fko<D4jD  
package org.rut.util.algorithm.support; KOixFn1  
7%h;To-<6  
import org.rut.util.algorithm.SortUtil; p$,7qGST  
,xwiJfG; ]  
/** #  X (2  
* @author treeroot ys=2!P-[#  
* @since 2006-2-2 175e:\Tw  
* @version 1.0 '4,?YcZ?S  
*/ `zoHgn7B9q  
public class ShellSort implements SortUtil.Sort{ c |0p'EQ  
!t%1G.  
/* (non-Javadoc) P| NGAd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5BrN uR$  
*/ V_i&@<J  
public void sort(int[] data) { `E~"T0RX  
for(int i=data.length/2;i>2;i/=2){ Y3@+aA  
for(int j=0;j insertSort(data,j,i); :tWk K$  
} PYQ0&;z  
} xM())Z|2  
insertSort(data,0,1); "rdpA[>L  
} FM]clC;X?  
enk`I$Xx  
/** ch# )XomN  
* @param data /qdvzv%T  
* @param j FH</[7f;@N  
* @param i yLRe'5#m  
*/ %YVPm*J ~  
private void insertSort(int[] data, int start, int inc) { fR1L VLU  
int temp; A&}]:4@{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tY$@,>2v  
} }$)~HmZw  
} m mF0RNE  
} p39$V[*g(  
#( .G;e;w  
} 4m~y%> &  
2)BO@]n  
快速排序: fb Bu^]^S  
UVDMYA0  
package org.rut.util.algorithm.support; +149 o2  
8Hq4ppC  
import org.rut.util.algorithm.SortUtil; IlJ"t`Z9)  
:1d;jx>  
/** y,?=,x}o#  
* @author treeroot >4g!ic~O  
* @since 2006-2-2 C\{A|'l!x  
* @version 1.0 m9h<)D'>  
*/ +B{u,xgg  
public class QuickSort implements SortUtil.Sort{ ) [eTZg  
z/#,L!Z3  
/* (non-Javadoc) OX,em Ti  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %C%3c4+Oh  
*/ "%K'~"S#Q,  
public void sort(int[] data) { H~*N:$C  
quickSort(data,0,data.length-1); F=5+JjrX  
} K0>;4E>B  
private void quickSort(int[] data,int i,int j){ gpq ,rOIK  
int pivotIndex=(i+j)/2; 0L;,\&*u  
file://swap *mV?_4!,f7  
SortUtil.swap(data,pivotIndex,j); tk0m[HN@eV  
>QDyG8*  
int k=partition(data,i-1,j,data[j]); IFW(nB(  
SortUtil.swap(data,k,j); 23|JgKuA  
if((k-i)>1) quickSort(data,i,k-1); L1_O!EQ  
if((j-k)>1) quickSort(data,k+1,j); aj|3(2;Kp  
,b^Y8_ltoT  
} 5]mH.{$x$?  
/** HRTNIx  
* @param data Qfp4}a=  
* @param i B<~AUf*y  
* @param j wmpQF<  
* @return qKSR5 #  
*/ ,3rsjoKhd  
private int partition(int[] data, int l, int r,int pivot) { #@nPB.  
do{ !"FEp  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dkC_Sh{  
SortUtil.swap(data,l,r); #0) TS  
} [ `|t(E'  
while(l SortUtil.swap(data,l,r); /#5rt&q  
return l; I!b"Rv=Nf-  
} hxdjmc-  
kM-8%a2i  
} ^WU[+H ;  
xJ#O|7N  
改进后的快速排序: 5X8 i=M;  
]G&[P8hz B  
package org.rut.util.algorithm.support; 'h ?  
/@Jg [na  
import org.rut.util.algorithm.SortUtil; ql%K+4@  
i=5!taxu}E  
/** eG+$~\%Fub  
* @author treeroot O-0 5.  
* @since 2006-2-2 S#CaJ}M  
* @version 1.0 ?i_2ueVR  
*/ Vuy%7H  
public class ImprovedQuickSort implements SortUtil.Sort { /?BTET  
IUAe6  
private static int MAX_STACK_SIZE=4096; !C4)P3k  
private static int THRESHOLD=10; 2K3j3|T  
/* (non-Javadoc) l_2Xao$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &n]v  
*/ BZOl&G(  
public void sort(int[] data) { dJzaP  
int[] stack=new int[MAX_STACK_SIZE]; E*R-Dno_F  
GRpwEfG  
int top=-1; t<+>E_Xw  
int pivot; Z$i?p;HnW  
int pivotIndex,l,r; n=f?Q=h\3  
0^L:`[W+  
stack[++top]=0; |0^IX   
stack[++top]=data.length-1; V6>{k_0{V  
`?^<r%*F.  
while(top>0){ zgS)j9q}  
int j=stack[top--]; T&1-gswr:  
int i=stack[top--]; 8/B8yY-O  
qi^kf  
pivotIndex=(i+j)/2; 3f>9tUWhTy  
pivot=data[pivotIndex]; -5os0G80  
Ur[ai6LNG  
SortUtil.swap(data,pivotIndex,j); c.Izm+9k  
{OQ)Np!  
file://partition ^-Ks_4  
l=i-1; AN,3[Sh  
r=j; s!W{ru  
do{ {y|.y~vW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f% 8n?f3;u  
SortUtil.swap(data,l,r); Dd OK&  
} 8\)4waz$  
while(l SortUtil.swap(data,l,r); 3Zz_wr6  
SortUtil.swap(data,l,j); sw$JY}Q8x  
MB5V$toC  
if((l-i)>THRESHOLD){ >!PM5%G  
stack[++top]=i; mE+=H]`.p  
stack[++top]=l-1; A\"4[PXpQ  
} XYV`[,^h&  
if((j-l)>THRESHOLD){ $v8T%'p+  
stack[++top]=l+1; 3]NKAPY  
stack[++top]=j; 1)e[F#|  
} b;`MHEzw&q  
~urk Uz  
} 1@-l@ P  
file://new InsertSort().sort(data); ?iaO+G&|  
insertSort(data); !!6@r|.  
} `^g-2~  
/** 9e;{o,r@  
* @param data O|v8.3[cT  
*/ Nog{w  
private void insertSort(int[] data) { JBV 06T_4o  
int temp; G]-\$>5R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); # b3 14  
} ieOw&  
} fX LsLh+~D  
} aTaL|&(  
I]#x0?D  
} IQ JFL +f  
BL0xSNE**  
归并排序: kT^`j^Jr  
qP/McH?  
package org.rut.util.algorithm.support; H_iQR9Ak7  
?U:c\TA,m  
import org.rut.util.algorithm.SortUtil; HS.eK#:N  
(6)|v S  
/** Rs'mk6+  
* @author treeroot mphs^k< Z  
* @since 2006-2-2 1<]?@[l<  
* @version 1.0 ;%AY#b4m  
*/ UHI<8o9  
public class MergeSort implements SortUtil.Sort{ /Zz [vf  
}Zp[f6^Q  
/* (non-Javadoc) .%\R L/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-]9/Ct  
*/ u\K`TWb%  
public void sort(int[] data) { t,5AoK/NL9  
int[] temp=new int[data.length]; `j6O  
mergeSort(data,temp,0,data.length-1); k c L +  
} V' sq'XB  
M\08 7k  
private void mergeSort(int[] data,int[] temp,int l,int r){ SR4 mbQ:  
int mid=(l+r)/2; &61h*s  
if(l==r) return ; -9 |)O:  
mergeSort(data,temp,l,mid); rB =c  
mergeSort(data,temp,mid+1,r); :K*/  
for(int i=l;i<=r;i++){ ;A?86o'?  
temp=data; AB.ZmR9|  
} [xDn=)`{V  
int i1=l; C61E=$  
int i2=mid+1; 7%|HtBXv^  
for(int cur=l;cur<=r;cur++){ X-yS9E  
if(i1==mid+1) $ 3Sm?  
data[cur]=temp[i2++]; C9%A?'`  
else if(i2>r) G Mg|#DV  
data[cur]=temp[i1++]; 5N#Sic M  
else if(temp[i1] data[cur]=temp[i1++]; (]"`>, ray  
else vf!lhV-UG+  
data[cur]=temp[i2++]; +W|VCz  
} 7MX5hZF"  
} ZjgfkZAS  
kc[<5^b5  
} q$B|a5a?  
pQCW6X  
改进后的归并排序: UotLJa  
T\TKgO=)  
package org.rut.util.algorithm.support; aslb^  
uF@DJX}>  
import org.rut.util.algorithm.SortUtil; DbN_(mC  
e$-Y>Dd  
/** "2 qivJ  
* @author treeroot F,xFeq$/{  
* @since 2006-2-2 @(m?j1!M  
* @version 1.0 ZY)&Fam}  
*/ )%I62<N,z  
public class ImprovedMergeSort implements SortUtil.Sort { {u$<-W-&  
l Ztw[c  
private static final int THRESHOLD = 10; _WBWFGj  
zE=^}K+  
/* h(FFG%H(  
* (non-Javadoc) *5" )3\/  
* j-/F *P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YZc{\~d  
*/ ^B'N\[  
public void sort(int[] data) { $btk48a7  
int[] temp=new int[data.length]; ^Zq3K  
mergeSort(data,temp,0,data.length-1); LHusy;<E[  
} U1pwk[  
VBg M7d  
private void mergeSort(int[] data, int[] temp, int l, int r) { 810uxw{\  
int i, j, k; Nf9$q| %!  
int mid = (l + r) / 2; KCS},X_  
if (l == r) `6Yk-5  
return; 8sU}[HH*1  
if ((mid - l) >= THRESHOLD) pq*4yaTT'  
mergeSort(data, temp, l, mid); iRI7x)^0"z  
else 0PJ7o#}_{@  
insertSort(data, l, mid - l + 1); {xQ(xy  
if ((r - mid) > THRESHOLD) "tU,.U  
mergeSort(data, temp, mid + 1, r); *qw//W   
else n{z!L-x^b  
insertSort(data, mid + 1, r - mid); 3Ebkq[/*%  
4nD U-P#f  
for (i = l; i <= mid; i++) { CQET  
temp = data; 82w=t  
} $+w-r#,  
for (j = 1; j <= r - mid; j++) { 2]_fNCNLN  
temp[r - j + 1] = data[j + mid]; 6V @ [< d  
} NfXEW-  
int a = temp[l]; oedLe9!  
int b = temp[r]; e`t-:~'  
for (i = l, j = r, k = l; k <= r; k++) { MY z\ R \  
if (a < b) { x4/f5  
data[k] = temp[i++]; \`|OAC0a  
a = temp; ?`=r@  
} else { F'JceU  
data[k] = temp[j--]; a*{ -r]  
b = temp[j]; 1y6{3AZm<  
} 5H/D~hr&  
} 3/RNStd<L!  
} ),U>AiF]  
$w ,^q+  
/** j%Z%_{6Ds*  
* @param data '>dx~v %  
* @param l fqD1Ej  
* @param i JX2@i8[~  
*/ u|M_O5^  
private void insertSort(int[] data, int start, int len) { oGqbk x  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); YjwC8#$  
} oTxE]a,  
} e'5sT#T9l  
} \t%rIr  
} 5VK.Zs\  
69EdMuf  
堆排序: )\fLS d  
"' ]|o~B  
package org.rut.util.algorithm.support; c>yqq'  
//- ;uEO  
import org.rut.util.algorithm.SortUtil; U<.,"`=l  
M%1wT9  
/** (b;*8  
* @author treeroot 'mE!,KeS;  
* @since 2006-2-2 t(5PKD#~Dc  
* @version 1.0 FKk.BA957h  
*/ nY50dFA,  
public class HeapSort implements SortUtil.Sort{ "/$2oYNy+  
l5CFm8%  
/* (non-Javadoc) H 5'Ke+4.e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "DU1k6XC  
*/ okQ<_1e{  
public void sort(int[] data) { J=AF`[  
MaxHeap h=new MaxHeap(); ?bH!|aW(H  
h.init(data); ^mCKRWOP'  
for(int i=0;i h.remove(); |lVoL.Z,0  
System.arraycopy(h.queue,1,data,0,data.length); _*LgpZ-2(  
} W60C$*h  
+|TFxaVz  
private static class MaxHeap{ RP~ hi%A  
Eh/Z4pzT  
void init(int[] data){ eaCh;IpIf  
this.queue=new int[data.length+1]; !5=S 2<UX  
for(int i=0;i queue[++size]=data; }J|Pd3Q Sf  
fixUp(size); I&|J +B?#  
} 8;1,saA_9  
} !t!\b9=  
b[`fQv$G  
private int size=0; 2mfKy9QxO  
O}mz@- Z  
private int[] queue; 7':qx}c#!1  
db5@+_  
public int get() { pF}WMt  
return queue[1]; zJX _EO  
} db0]D\  
KkD&|&!Q7u  
public void remove() { VJ()sbl{k  
SortUtil.swap(queue,1,size--); K%RjWX=H  
fixDown(1); NX9K%J  
} *_CzCl^   
file://fixdown xJ|_R,>.H  
private void fixDown(int k) { 0`%Ask  
int j; ?'+ kZ|  
while ((j = k << 1) <= size) { ylwh_&>2  
if (j < size %26amp;%26amp; queue[j] j++; |++\"g  
if (queue[k]>queue[j]) file://不用交换 /O&{fo  
break; ,RIC _26  
SortUtil.swap(queue,j,k); s8iB>-dk  
k = j; fH*1.0f]6  
} 9KGi%UIFvn  
} :~%{  
private void fixUp(int k) { Y]])Tq;h5  
while (k > 1) { ]c~W$h+F  
int j = k >> 1; [ T!0ka  
if (queue[j]>queue[k]) d@e2+3<  
break; 5!*@gn  
SortUtil.swap(queue,j,k); Z[?zaQ$  
k = j; RSK5 }2  
} $Z[W}7{pt#  
} )H| cri~D  
c-q=Ct  
} 8D6rShx =  
g vu1  
} l[u=_uaYl  
_fE$KaP  
SortUtil: $, @,(M`i}  
zyPc<\HoK  
package org.rut.util.algorithm; $fFh4O4  
gjDxgNpa  
import org.rut.util.algorithm.support.BubbleSort; 8qWN~Gk1p{  
import org.rut.util.algorithm.support.HeapSort; g8L{xwx<  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1%`Nu ]D  
import org.rut.util.algorithm.support.ImprovedQuickSort;  G%5ZG$as  
import org.rut.util.algorithm.support.InsertSort; lXOT>$qR<  
import org.rut.util.algorithm.support.MergeSort; qEajT"?  
import org.rut.util.algorithm.support.QuickSort; {dXmSuO  
import org.rut.util.algorithm.support.SelectionSort; }(/\vTn*1  
import org.rut.util.algorithm.support.ShellSort; g=L80$1  
(,OF<<OH  
/** cbaa*qoU  
* @author treeroot $i]G'fj  
* @since 2006-2-2 AtYqD<hl:  
* @version 1.0 .-4]FGg3  
*/ bd)'1;p  
public class SortUtil { U2vM|7 ]VP  
public final static int INSERT = 1; , Aw Z%  
public final static int BUBBLE = 2; RAB'%CY4  
public final static int SELECTION = 3; P]%)c6Uh  
public final static int SHELL = 4; %=`wN^3t2  
public final static int QUICK = 5; pi;'!d[l%  
public final static int IMPROVED_QUICK = 6; 45.Vr[FS.  
public final static int MERGE = 7; 0I['UL^!F  
public final static int IMPROVED_MERGE = 8; X<mlaXwrA  
public final static int HEAP = 9; k<}3_   
r<c&;*  
public static void sort(int[] data) {  KGJ *h  
sort(data, IMPROVED_QUICK); _:7:ixN[Ie  
} kY^ k*-v  
private static String[] name={ "X,*VQl:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /_qW?LKG/  
}; W*r1Sy  
p-XO4Pc 6  
private static Sort[] impl=new Sort[]{ L25%KGg' o  
new InsertSort(), )18C(V-x  
new BubbleSort(), ToX--w4  
new SelectionSort(), -OXC;y  
new ShellSort(), V_/.]zQA  
new QuickSort(), Y1R?, 5  
new ImprovedQuickSort(), N~~ sM"n  
new MergeSort(), hMnm>  
new ImprovedMergeSort(), ;b_l/T(  
new HeapSort() ?Sr7c|a2  
}; > PK 6CR  
u\Y3h:@u  
public static String toString(int algorithm){ H*HL:o-[  
return name[algorithm-1]; SZ1yy["  
} bCqTubbx!t  
 L30$  
public static void sort(int[] data, int algorithm) { $8WWN} OC  
impl[algorithm-1].sort(data); \>[k0<  
} b} FhC"'i  
%ty`Oa2  
public static interface Sort { 7KL@[  
public void sort(int[] data); mI'&!@WG  
} -car>hQq  
+t%1FkI\  
public static void swap(int[] data, int i, int j) { EhAaaG  
int temp = data; {"c`k4R  
data = data[j]; 6/6{69tnr  
data[j] = temp; otbr8&?-  
} d9up! k  
} QJ+Ml  
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