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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。 mVXwU](N  
插入排序: v 9k\[E?  
z }3` 9  
package org.rut.util.algorithm.support; 3+[;  
\/XU v(  
import org.rut.util.algorithm.SortUtil; 3~q#P   
/** >c`r&W.t  
* @author treeroot uNKf!\Y  
* @since 2006-2-2 M r-l  
* @version 1.0 #W$6[#7=I  
*/ #~}4< 18  
public class InsertSort implements SortUtil.Sort{ H 0( .p'eN  
\jmT#Gt`9  
/* (non-Javadoc) i[Qq,MmC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a``/x_EZMn  
*/ g3|k-  
public void sort(int[] data) { *""iXi[  
int temp; xiv8q/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,_K y'B  
} *epK17i=  
} U| T}0  
} ajCe&+  
A&N$=9.N1  
} b.q/? Yx  
7Y?59 [  
冒泡排序: t/lQSUip  
?%cZO "  
package org.rut.util.algorithm.support; :]icW ^%  
`3eQ#,G!  
import org.rut.util.algorithm.SortUtil; |F4)&xN\  
Xv+!) j<  
/** wZ5k|5KtW  
* @author treeroot v65]$%F?  
* @since 2006-2-2 /H?) qk  
* @version 1.0 o\<JG?P  
*/ '/s/o]'sUd  
public class BubbleSort implements SortUtil.Sort{ eN'b" _D  
),>whCtsI  
/* (non-Javadoc) !a4`SjOgu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xz?7x0)Z  
*/ T |&u?  
public void sort(int[] data) { s"`Oj5  
int temp; ,Yn$X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \#v(f2jPF  
if(data[j] SortUtil.swap(data,j,j-1); aECpe'!m4  
} S c ijf 9  
} |hS^eK_  
} tl 9`  
} wE -y4V e  
|['SiO$)  
} aA -j  
"yK)9F[9Mo  
选择排序: 3!h3flE  
(QdLz5\  
package org.rut.util.algorithm.support; y(*5qa<>  
Y>{%,d#s_  
import org.rut.util.algorithm.SortUtil; 9e7):ZupO  
pxI[/vS N  
/** NxzAlu  
* @author treeroot RT2&^9-  
* @since 2006-2-2 cJ>^@pd{  
* @version 1.0 j*FpQiBoT  
*/ .zy2_3:  
public class SelectionSort implements SortUtil.Sort { xouBBb=  
&gP1=P,!  
/* #<@_mbQ@|K  
* (non-Javadoc) "^ aSONz  
* #sv:)p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ t.E_K  
*/ mC$ te  
public void sort(int[] data) { K<k\A@rv8H  
int temp; 4<- E0  
for (int i = 0; i < data.length; i++) { ]vuxeu[cu,  
int lowIndex = i; x&N@R?AG1  
for (int j = data.length - 1; j > i; j--) { uG/b Cb+V  
if (data[j] < data[lowIndex]) { ?btX&:j2P  
lowIndex = j; o9v.]tb  
} .B! L+M< [  
} fG<[zt\e  
SortUtil.swap(data,i,lowIndex); k#2b3}(,  
} ;p"#ZS7  
} rc}=`D`  
M2A3]wd2a  
} zR%)@wh  
?U,XyxN  
Shell排序: h2aO-y>K  
:io~{a#.2\  
package org.rut.util.algorithm.support; [3] h(D  
r3YfY \  
import org.rut.util.algorithm.SortUtil; 0 d2to5 (  
ai)?RF  
/** 'l1cuAP!+  
* @author treeroot ` kZ"5}li  
* @since 2006-2-2 K&&YxX~ 3  
* @version 1.0 oTeQY[%$  
*/ ?osYs<k \  
public class ShellSort implements SortUtil.Sort{ ,f .#-  
UvGX+M,z'  
/* (non-Javadoc) F'55BY*!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2yV {y#\   
*/ XE|"n  
public void sort(int[] data) { L ~$&+g  
for(int i=data.length/2;i>2;i/=2){ !_:|mu'  
for(int j=0;j insertSort(data,j,i); w'Jo).OW~  
} zQtx!k=  
} z"!=A}i  
insertSort(data,0,1); 0urM@/j+  
} y|%lw%cSe  
!?m8UE  
/** W0Q;1${  
* @param data WoWBZ;+U  
* @param j .Tc?9X~4  
* @param i ":Pfi!9Wl  
*/ 1<f,>BQ+  
private void insertSort(int[] data, int start, int inc) { -\~x^5K  
int temp; ,,(BW7(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +C(/.X Kz%  
} wk6tdY{&s  
} J]Qbg7|  
} btB> -pT  
7A>glZ/x  
} ZQDw|*a@  
b .v^:M  
快速排序: sKOy6v  
@RS|}M^4  
package org.rut.util.algorithm.support; -cWxS{vO  
B ? D|B  
import org.rut.util.algorithm.SortUtil; [3hOc/]s  
RkBbu4uQ-  
/** 1)h+xY  
* @author treeroot xr 4kBC t  
* @since 2006-2-2 mdIa`OZr  
* @version 1.0 X6: c-  
*/ ?1MaA  
public class QuickSort implements SortUtil.Sort{ }Z\PE0  
XDq*nA8#5B  
/* (non-Javadoc) 97(*-e=e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vh^,8pPy  
*/ FG5t\!dt<  
public void sort(int[] data) { 626 !6E;T  
quickSort(data,0,data.length-1); NX:i]t  
} a;e~D 9%1  
private void quickSort(int[] data,int i,int j){ |0/~7l  
int pivotIndex=(i+j)/2; \py \rI  
file://swap WT>2eMK[  
SortUtil.swap(data,pivotIndex,j); xA2 "i2k9  
}W k!):=y  
int k=partition(data,i-1,j,data[j]); '`Iuf\  
SortUtil.swap(data,k,j); eo&nAr  
if((k-i)>1) quickSort(data,i,k-1); /__@a&9t  
if((j-k)>1) quickSort(data,k+1,j); KPSHBv-#  
]J7.d$7T  
} rSvQarT  
/** $,~D-~-  
* @param data 0? QTi(  
* @param i ix]t>2r  
* @param j s!j[Ovtx  
* @return 11(:#4Y,  
*/ !nkjp[p  
private int partition(int[] data, int l, int r,int pivot) { I ;Sm<P7*  
do{ oMV<Yn_<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [~<X|_L G  
SortUtil.swap(data,l,r); %nfaU~IqK  
} hln.EAW'Yc  
while(l SortUtil.swap(data,l,r); CQx#Xp>=s  
return l; ub/9T-#l  
} C.[abpc  
tmJ-2  
} 2\p8U#""  
'-7rHx  
改进后的快速排序: R6A{u(  
S3iXG @  
package org.rut.util.algorithm.support; Io81zA  
YxUC.2V|7$  
import org.rut.util.algorithm.SortUtil; U- UD27  
;5bzXW#U  
/** 8(Ab NQ  
* @author treeroot n@)Kf A)&  
* @since 2006-2-2 *+ql{\am4N  
* @version 1.0 D!- 78h  
*/ R>iRnrn:-  
public class ImprovedQuickSort implements SortUtil.Sort { .W#-Cl&n8  
? %9-5"U[  
private static int MAX_STACK_SIZE=4096; VM1`:1Z:$  
private static int THRESHOLD=10;  M[^  
/* (non-Javadoc) M6 W {mek  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 75+#)hNa!P  
*/ +M"Fv9  
public void sort(int[] data) { bZE;}d  
int[] stack=new int[MAX_STACK_SIZE]; N<|_tC+ct  
Cz%tk}2  
int top=-1; aeQvIob@  
int pivot; .S l{m[nV8  
int pivotIndex,l,r; ^}+qd1r  
8T7E.guYr  
stack[++top]=0; D+Ke)-/  
stack[++top]=data.length-1; 'Olp2g8=  
3 ?1qI'5  
while(top>0){ QxSJLi7t  
int j=stack[top--]; pO* $ '8L  
int i=stack[top--]; ]ZD W+<  
TzC'x WO  
pivotIndex=(i+j)/2; ET_a>]<mv  
pivot=data[pivotIndex]; csceu+ IA  
X0\2qD  
SortUtil.swap(data,pivotIndex,j); 5/vfmDt3'G  
q`HuVilNH  
file://partition ''{REFjK7  
l=i-1; 6`>WO_<z  
r=j; 3C,G~)= x  
do{ ;"}yVV/4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i'w8Li  
SortUtil.swap(data,l,r); \(ygdZ{R  
} *&f^R}O  
while(l SortUtil.swap(data,l,r); 5r*5Co+  
SortUtil.swap(data,l,j); JnW G_|m)  
_GoV\wGKl  
if((l-i)>THRESHOLD){ KT3W>/#E  
stack[++top]=i; [Eeanl&x>  
stack[++top]=l-1;  xJphG  
} i `m&X6)\j  
if((j-l)>THRESHOLD){ `&\jOve   
stack[++top]=l+1; a.n;ika]-  
stack[++top]=j; ae1?8man  
} p#5U[@TK  
HHT_}_?  
} f<14-R=  
file://new InsertSort().sort(data); m* Zq3j  
insertSort(data); V`c"q.8  
} -B`Nkc  
/** :%6OFO$z  
* @param data WH>=*\  
*/ m\4V;F  
private void insertSort(int[] data) { QKW\z aG  
int temp; F9ys.Bc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }McqoZ%F  
} 8 #m,TOp  
} @q98ac*{  
} <r9L-4  
S:bYeD4  
} Qm-I=Rh+  
^(j}'p,  
归并排序: 3V(]*\L  
T*Dd% f  
package org.rut.util.algorithm.support; S55h}5Y  
*1H8 &  
import org.rut.util.algorithm.SortUtil; ^n|yfvR  
XIGz_g;#'w  
/** 0N|l1Sn  
* @author treeroot i,H(6NL.  
* @since 2006-2-2 %ER"Udh  
* @version 1.0 uPT2ga]  
*/ NJNS8\4  
public class MergeSort implements SortUtil.Sort{ 3s]aXz:  
bu?4$O  
/* (non-Javadoc) 0P 5s'2w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _o52#Q4   
*/ +]3kcm7B  
public void sort(int[] data) { )+ V)]dS@%  
int[] temp=new int[data.length]; pjN4)y>0  
mergeSort(data,temp,0,data.length-1); Sl;[9l2  
} 22T\ -g{  
t/wo G9N  
private void mergeSort(int[] data,int[] temp,int l,int r){ EED0U?  
int mid=(l+r)/2; 33=lR-N#  
if(l==r) return ; &o;d  
mergeSort(data,temp,l,mid); ^Q\Hy\  
mergeSort(data,temp,mid+1,r); ,M.phRJ-`  
for(int i=l;i<=r;i++){ fTOGW`s^  
temp=data; )ZW[$:wA  
} A_\`Gj!s%  
int i1=l; ;e"dxAUe!^  
int i2=mid+1; h6Q~Di  
for(int cur=l;cur<=r;cur++){ 0clq}  
if(i1==mid+1) Ei7Oi!1  
data[cur]=temp[i2++]; uq2C|=M-x\  
else if(i2>r) oj(st{,  
data[cur]=temp[i1++]; :O'QL,  
else if(temp[i1] data[cur]=temp[i1++]; (e_z*o)\T  
else B1V+CP3t  
data[cur]=temp[i2++]; ^@C/2RX!  
} #`ZBA>FLaQ  
} i5,yrPF  
G=F_{z\}  
} r;9 V7C  
&qzy?/i8  
改进后的归并排序: bt};Pn{3  
Bp_8PjQ  
package org.rut.util.algorithm.support; ?Dl;DE1  
Zq~Rkx  
import org.rut.util.algorithm.SortUtil; /iEQ}  
iR!]&Oh  
/** PfsUe,*  
* @author treeroot =axuLP))  
* @since 2006-2-2 y=aWSb2y'  
* @version 1.0 >"+ ho  
*/ `TYC]9  
public class ImprovedMergeSort implements SortUtil.Sort { kTcW=AXu  
l;r A}?,.^  
private static final int THRESHOLD = 10; 73_=CP" t  
[C/{ru&E  
/* cMrO@=b;  
* (non-Javadoc) NM9,AG  
* Na4O( d`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B='f"G  
*/ =CW> ;h]  
public void sort(int[] data) { ZWni5uF-c  
int[] temp=new int[data.length]; |2=@8_am  
mergeSort(data,temp,0,data.length-1); J(K/z,4h  
} 73B[|J*  
A.mFa1lH  
private void mergeSort(int[] data, int[] temp, int l, int r) { BNF*1JO  
int i, j, k; }.pqV X{ d  
int mid = (l + r) / 2; m[%':^vSr  
if (l == r) lQiw8qD  
return; xkRS?Q g  
if ((mid - l) >= THRESHOLD) KLW>O_+   
mergeSort(data, temp, l, mid); "iGQ1#6|d  
else X-X`Z`o  
insertSort(data, l, mid - l + 1); 3AglvGK7{  
if ((r - mid) > THRESHOLD) lXF7)H&T  
mergeSort(data, temp, mid + 1, r); =)G]\W)m  
else cIQbu#[@  
insertSort(data, mid + 1, r - mid); f_$hK9I  
i=*H|)  
for (i = l; i <= mid; i++) {  4Y}Nu  
temp = data; Zoc4@% n  
} YXZP-=fB>i  
for (j = 1; j <= r - mid; j++) { zy%0;%  
temp[r - j + 1] = data[j + mid]; cWG%>.`5r  
} sVBr6 !v=  
int a = temp[l]; xMNQT.A  
int b = temp[r]; d=meh4Y  
for (i = l, j = r, k = l; k <= r; k++) { by0K:*C  
if (a < b) { Wz #Cyjo  
data[k] = temp[i++]; M 87CP=yc  
a = temp; P 4t@BwU$  
} else { @"BhKUoV$K  
data[k] = temp[j--]; 4`)r1D!U  
b = temp[j]; fI`gF^u(  
} Ww60-d}}Q  
} i NfAn&  
} i-w$-2w  
9) ,|h  
/** W7'<Jom|?  
* @param data .)$MZyo  
* @param l (&Jo. <  
* @param i TE$6=;  
*/ Z1I.f"XY  
private void insertSort(int[] data, int start, int len) { Su7N?X!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _tX=xAO9  
} 4ryG_p52l  
} q4Wr$T$gs=  
} %cg| KB"l  
} P`{$7ST'Hh  
7I'C'.6iM  
堆排序: ZLxa|R7  
- z+,j(@  
package org.rut.util.algorithm.support; Z#Kf%x.  
lya},_WCq  
import org.rut.util.algorithm.SortUtil; RqGX(Iuv  
=?0v,;F9|  
/** k9OGnCW\  
* @author treeroot wEM=Tr/h  
* @since 2006-2-2 f$\ O:E=  
* @version 1.0 !hZ: \&V  
*/ c'tQA  
public class HeapSort implements SortUtil.Sort{ z2t+1 In,  
7`;f<QNo  
/* (non-Javadoc) Pb>/b\&JS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  |@'O3KA  
*/ eGq7+  
public void sort(int[] data) { I/tMFg  
MaxHeap h=new MaxHeap(); 7~QI4'e  
h.init(data); C 5gdvJN  
for(int i=0;i h.remove(); (1[59<cg]  
System.arraycopy(h.queue,1,data,0,data.length); jhf3(hx&F  
} GW;%~qH[,  
pg4pfi^__V  
private static class MaxHeap{ \H:T)EVy  
RYEZ'<  
void init(int[] data){ B8T$<  
this.queue=new int[data.length+1]; F""9O6u  
for(int i=0;i queue[++size]=data; CUI+@|]%  
fixUp(size); Dho6N]86r  
} ) yMrE T m  
} 4\&Y;upy+  
B F<u3p??  
private int size=0; zq{UkoME  
jW`JThoq  
private int[] queue; !Yb !Au[  
)xyjQ|b  
public int get() { r)'vn[A  
return queue[1]; rnj$u-8  
} - C q;  
\6SjJ]o>  
public void remove() { 0,t%us/q  
SortUtil.swap(queue,1,size--); '1ySBl1>  
fixDown(1); X n!mdR  
} 50N4J  
file://fixdown tn' Jkwp  
private void fixDown(int k) { 4kM/`g6?,q  
int j; 43AzNXWF8  
while ((j = k << 1) <= size) { P+hcj p*  
if (j < size %26amp;%26amp; queue[j] j++; KN|<yF   
if (queue[k]>queue[j]) file://不用交换 1}DA| !~  
break; [UzD3VPg  
SortUtil.swap(queue,j,k); zg<-%r'$  
k = j; fx_#3=bXi  
} l}z<q  
} J/4T=:\  
private void fixUp(int k) { 1^WGJ"1  
while (k > 1) { v<!S_7h  
int j = k >> 1; Kk8} m;  
if (queue[j]>queue[k]) mgjJNzclL  
break; _ Ncbo#G  
SortUtil.swap(queue,j,k); Ocx"s\q(  
k = j; sg $db62>  
} ;9T}h2^`B  
} 2@zduL'do_  
j HHWq>=d  
} OT])t<TF6  
XA2Ld  
} /e'3\,2_  
'V:Q :  
SortUtil: sW]^YT>?  
b0$)G-E/Y  
package org.rut.util.algorithm; P9cx&Hk9  
,@ 8+%KqG  
import org.rut.util.algorithm.support.BubbleSort; o{s2T)2  
import org.rut.util.algorithm.support.HeapSort; YJ _eE  
import org.rut.util.algorithm.support.ImprovedMergeSort; tUv>1) [  
import org.rut.util.algorithm.support.ImprovedQuickSort; hC:'L9Y  
import org.rut.util.algorithm.support.InsertSort; fc9;ZX7  
import org.rut.util.algorithm.support.MergeSort; EMmgX*iu@  
import org.rut.util.algorithm.support.QuickSort; "<ZV'z  
import org.rut.util.algorithm.support.SelectionSort; AFz:%m  
import org.rut.util.algorithm.support.ShellSort; ]<f)Rf">:`  
RPz[3y  
/** h:%,>I%{  
* @author treeroot b' o]Y  
* @since 2006-2-2 J6Z[c*W  
* @version 1.0 XNYA\%:5S  
*/ n$/|r  
public class SortUtil { c?A$Y?|9  
public final static int INSERT = 1; x>#{C,Fi  
public final static int BUBBLE = 2; !Z!)$3bB  
public final static int SELECTION = 3; <&5z0rDKWw  
public final static int SHELL = 4; +K 4XMf  
public final static int QUICK = 5; gmL~n7m:K  
public final static int IMPROVED_QUICK = 6; )0"Q h  
public final static int MERGE = 7; m!V,W*RNr  
public final static int IMPROVED_MERGE = 8; E=sh^Q(A  
public final static int HEAP = 9; U zy@\  
|#TU"$;  
public static void sort(int[] data) { s.2f'i+  
sort(data, IMPROVED_QUICK); /G||_Hc  
} nQF& ^1n  
private static String[] name={ 1V%tev9a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5 D|#l*V  
}; s6`E.Eevm  
7H6Ts8^S  
private static Sort[] impl=new Sort[]{ E2e"A I.h  
new InsertSort(), clE9I<1v  
new BubbleSort(), p*g Fr hm  
new SelectionSort(), dN{At-  
new ShellSort(), E)v~kC}7.  
new QuickSort(), [EAOk=X  
new ImprovedQuickSort(), jB LTEb  
new MergeSort(), o=m5AUe?J  
new ImprovedMergeSort(), PUdv1__C  
new HeapSort() RNT9M:w  
}; PucNu8   
eD>b|U=/  
public static String toString(int algorithm){ "#d$$ 8  
return name[algorithm-1]; 9 [eiN  
} S <mZs;  
i).%GMv*r  
public static void sort(int[] data, int algorithm) { T\6Qr$t  
impl[algorithm-1].sort(data); f1'ByV'2  
} ]iV ]7g8:  
&CG94  
public static interface Sort { )."ob=m  
public void sort(int[] data); ^twyy9VR  
} YU,zQ V'  
z g7Q`  
public static void swap(int[] data, int i, int j) { {v"f){   
int temp = data; }<Ydj .85  
data = data[j]; 1mFH7A($  
data[j] = temp; }8O9WS  
} 7 [Us.V@  
} *bK=<{d1P  
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