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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。 O <9~Kgd8h  
插入排序: +c:3o*  
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package org.rut.util.algorithm.support; LL!.c  
g}&hl"j  
import org.rut.util.algorithm.SortUtil; k.h`Cji@  
/** W-RqN!snJ8  
* @author treeroot 8pLBt:  
* @since 2006-2-2 @J[6,$UVu  
* @version 1.0 I3u{zHVwI  
*/ M|T4~Q U&  
public class InsertSort implements SortUtil.Sort{ :&}odx!-!C  
#L crI  
/* (non-Javadoc) 3[p_!eoW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0uVv<Q~  
*/ W#_/ak$uF*  
public void sort(int[] data) { nGZX7Fx5  
int temp; >,C4rC+:XN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MB);!qy  
} Q_*_?yf  
} L;_c|\%  
} h*0S$p<[1  
{s,+^7  
} <j}lp-  
Rg29  
冒泡排序: F9c`({6k  
RnVtZ#SCh  
package org.rut.util.algorithm.support; m!XI{F@x  
"re-@Baw  
import org.rut.util.algorithm.SortUtil; Q^}%c U0  
?<X(]I.j  
/** TL= YQA  
* @author treeroot NW$H"}+o  
* @since 2006-2-2 CozKyt/r7  
* @version 1.0 P#kGX(G9!  
*/ D|I Ec?  
public class BubbleSort implements SortUtil.Sort{ :(3|HTz  
NX* O_/  
/* (non-Javadoc) ir> ]r<Zl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z^* '@  
*/ <dA8 '7^  
public void sort(int[] data) { u%|zc=  
int temp; \`'KlF2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Qx|H1_6  
if(data[j] SortUtil.swap(data,j,j-1); @54*.q$  
} CDMfa&;T  
} tury<*  
} iY[+Ywh  
} U3;aLQ*  
V|Tud  
} xIbMs4'iEx  
k@!r#`j3  
选择排序: 4YG/`P  
x  FJg  
package org.rut.util.algorithm.support; F SMj  
KM?1/KZ/~  
import org.rut.util.algorithm.SortUtil; 9G?ldp8  
/z."l!u6  
/** 7D"%%|: h  
* @author treeroot ul7o%Hs  
* @since 2006-2-2 &!.HuRiuC  
* @version 1.0 iMP  
*/ -=$2p0" R  
public class SelectionSort implements SortUtil.Sort { ?4t-caK^u  
1V&PtI3 !!  
/* Z%o7f6P0IX  
* (non-Javadoc)  GrJ#.  
* UgHf*m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gu(lI ~  
*/ .,2V5D-${  
public void sort(int[] data) { HP2wtN{Zs  
int temp; F:FMeg  
for (int i = 0; i < data.length; i++) { O0~vf[i];  
int lowIndex = i; 8Vl!|\x5  
for (int j = data.length - 1; j > i; j--) { O>r-]0DI[  
if (data[j] < data[lowIndex]) { IxSV?k   
lowIndex = j; >X}{BDMb.  
} V%L/8Q~  
} g1m-+a  
SortUtil.swap(data,i,lowIndex); @_'OyRd8  
} s PYX~G&T  
} Ayx^Wp*s  
*3{J#Q6fk3  
} QezSJ io  
@9 8;VWY\  
Shell排序: _"f  :`  
3*S[eqMJc  
package org.rut.util.algorithm.support; @Z(rgF{{  
$`Nd?\$  
import org.rut.util.algorithm.SortUtil; /F[+13C  
tn<6:@T  
/** M8W#io  
* @author treeroot #Fd W/y5  
* @since 2006-2-2 DQ!J!ltQ  
* @version 1.0 3><u*0qe%I  
*/ e=f.y<  
public class ShellSort implements SortUtil.Sort{ 8:;#,Urr  
D!> d0k,Y  
/* (non-Javadoc) e$l 6gY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LVtu*k   
*/ 4KpL>'Q=  
public void sort(int[] data) { cf8-]G?tK  
for(int i=data.length/2;i>2;i/=2){ h* .w"JO  
for(int j=0;j insertSort(data,j,i); GG-[`!>.pw  
} O&?.&h  
} =V$j6  
insertSort(data,0,1); gp  
} >Wi s.e%b  
/0==pLa4  
/** 9BON.` |_  
* @param data 90:K#nW;  
* @param j <! x+e E`  
* @param i :X>DkRP  
*/ tB6k|cPC  
private void insertSort(int[] data, int start, int inc) { CMVS W6  
int temp; `| 9Ku  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $C_M&O}  
} Pn WD}'0V  
} WYIw5 jzC  
} F|eu<^"$ H  
pG yRX_;  
} 2"/yEg*=  
7 ^I:=qc72  
快速排序: ey1Z/|  
2_pz3<,\  
package org.rut.util.algorithm.support; %`\]Y']R  
A3UQJ  
import org.rut.util.algorithm.SortUtil; l8wF0|  
?ApRJm:T  
/** mvTb~)  
* @author treeroot F,}s$v  
* @since 2006-2-2 gbGTG(:1S  
* @version 1.0 |O (G nsZ  
*/ HhSjR%6HY;  
public class QuickSort implements SortUtil.Sort{ }p'8w\C$  
=7jEz+w#  
/* (non-Javadoc) "bX4Q4Dq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :m`/Q_y"  
*/ 1L[S*X  
public void sort(int[] data) { MW@DXbKVl  
quickSort(data,0,data.length-1); )!-S|s'  
} ~77 5soN  
private void quickSort(int[] data,int i,int j){ {'~sS  
int pivotIndex=(i+j)/2; 'j79GC0  
file://swap %W;u}`  
SortUtil.swap(data,pivotIndex,j); vjTwv+B"  
FMS2.E  
int k=partition(data,i-1,j,data[j]); njMLyT($  
SortUtil.swap(data,k,j); 9*_uCPR  
if((k-i)>1) quickSort(data,i,k-1); 3%IWGmye4  
if((j-k)>1) quickSort(data,k+1,j); dF,DiRD  
D@hmO]5c  
} (!n-Age  
/** E~He~wHWe  
* @param data  U42\.V0  
* @param i 1g i}H)  
* @param j ay[+2"  
* @return k,]{NO   
*/ s/ S+ ec3  
private int partition(int[] data, int l, int r,int pivot) { L?f qcW{  
do{ 1URsHV!xcM  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M[,^KJ!  
SortUtil.swap(data,l,r); 6Bdyf(t  
} b\L)m (  
while(l SortUtil.swap(data,l,r); %HEmi;  
return l; cdsQ3o  
} 9p<:LZd~  
+{ab1))/  
} z(UX't (q  
n4*'B*  
改进后的快速排序: n\~yX<;X3  
m|dF 30~A  
package org.rut.util.algorithm.support; rk|a'&  
Fe4esg-B<  
import org.rut.util.algorithm.SortUtil; Kq6qXc\x  
$K=z  
/** 6DZ2pT:  
* @author treeroot a}D&$yz2  
* @since 2006-2-2 ro]L}oE+  
* @version 1.0 APuu_!ez1  
*/ Ph\F'xROe  
public class ImprovedQuickSort implements SortUtil.Sort { ?M<|r11}  
uN&M\(  
private static int MAX_STACK_SIZE=4096; =+Tsknq  
private static int THRESHOLD=10; )`RZkCe  
/* (non-Javadoc) fiqj;GW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K!b>TICa:  
*/ ]}_,U!`8  
public void sort(int[] data) { "0Y&~q[=  
int[] stack=new int[MAX_STACK_SIZE]; L4mTs-M.  
hGKdGu`0  
int top=-1; +}]wLM}\UF  
int pivot; @}{VM)Fc+  
int pivotIndex,l,r; #ZwY?T x  
(QhAGk&lu  
stack[++top]=0; ]eL~L_[G\  
stack[++top]=data.length-1; %>NRna  
ndt8=6p  
while(top>0){ =z%s8D2  
int j=stack[top--]; m-#d8sD2C  
int i=stack[top--]; ;@O(z*14@  
P#9-bYNU  
pivotIndex=(i+j)/2; &`5 :G LV  
pivot=data[pivotIndex]; lc-*8eS  
x k#*=  
SortUtil.swap(data,pivotIndex,j); ?/L1tX)  
h!;MBn`8  
file://partition ceI [hM  
l=i-1; &:,fb]p  
r=j; h@/>?Va  
do{ LQ|<3]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {B v`i8e  
SortUtil.swap(data,l,r); kjfxjAS=m  
} B C&^]M  
while(l SortUtil.swap(data,l,r); n%Rjt!9  
SortUtil.swap(data,l,j); <m9JXO:5  
PE +qYCpP9  
if((l-i)>THRESHOLD){ )%1&/uN)  
stack[++top]=i; M{y|7e%K  
stack[++top]=l-1; zkvH=wL  
}  2fbvU  
if((j-l)>THRESHOLD){ LDSbd,GF  
stack[++top]=l+1; OQ 0b$qw  
stack[++top]=j; $M%}Oz3*  
} 7{8)ykBU^  
Xek E#?.  
} Z'Zd[."s  
file://new InsertSort().sort(data); !FO:^P  
insertSort(data); KN|'|2/|  
} 9yp^zL  
/** pzYG?9cwz  
* @param data E ,Dlaq  
*/ (rMTW+,  
private void insertSort(int[] data) { R7y-#?  
int temp; `jt(DKB+J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gS0,')w  
} NdaM9a#TZ  
} ">0 /8]l  
} 9 ?[4i'  
rUhWZta  
} 047*gn.b  
S:DcfR=a  
归并排序: FkLQBpp(x  
O{O 9}]6  
package org.rut.util.algorithm.support; sVNo\  
3<yCe%I:  
import org.rut.util.algorithm.SortUtil; ggzAU6J  
VN1# 8{  
/** LH1BZ(5g  
* @author treeroot +X{cN5Y K  
* @since 2006-2-2 d;IJ0xB+by  
* @version 1.0 F12S(5Z0%  
*/ 6i55Ja  
public class MergeSort implements SortUtil.Sort{ 15RI(BN   
H d96[Uo  
/* (non-Javadoc) iFXUKGiV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 / F<T  
*/ &4a~6  
public void sort(int[] data) { QLxXp  
int[] temp=new int[data.length]; BNF++<s  
mergeSort(data,temp,0,data.length-1); s2kGU^]y  
} 7 B4w.P,B  
%!1@aL]pQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]M02>=1  
int mid=(l+r)/2; z0FR33-  
if(l==r) return ; X:iG[iU*  
mergeSort(data,temp,l,mid); %l0_PhAB  
mergeSort(data,temp,mid+1,r); "@F*$JGT y  
for(int i=l;i<=r;i++){ OD>u$tI9  
temp=data; BIwgl@t!>  
} lU >)n  
int i1=l; B`t)rBy  
int i2=mid+1; 0EF,uRb  
for(int cur=l;cur<=r;cur++){ S8rW'}XJ=H  
if(i1==mid+1) 89?3,k  
data[cur]=temp[i2++]; >c~9wv  
else if(i2>r) ~{kA) :  
data[cur]=temp[i1++]; Uj y6vgU;  
else if(temp[i1] data[cur]=temp[i1++]; x`b~ZSNJ%  
else `Nxo0Q  
data[cur]=temp[i2++]; 6T5A31 Q  
} W\ZV0T;<]  
} fwz5{>ON]  
D"1vw<Ak  
} Zi15wE  
1D#T+t`[  
改进后的归并排序: KR+aY.  
4C2>0O<^s  
package org.rut.util.algorithm.support; @Wlwt+;fT  
}Etd#">  
import org.rut.util.algorithm.SortUtil; aH~x7N6!  
=2GP^vh  
/** T% jjs  
* @author treeroot e%5'(V-y,  
* @since 2006-2-2 \ZmFH8=|f  
* @version 1.0 98<bF{#0WM  
*/ h[M6.  
public class ImprovedMergeSort implements SortUtil.Sort { AOq9v~)z-  
tOp:e KN  
private static final int THRESHOLD = 10; ZKiL-^dob  
N69eI dl  
/* !rN#PF>  
* (non-Javadoc) `t/@ L:  
* pEqr0Qwh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '=@H2T6=  
*/ !nqm ;96  
public void sort(int[] data) { C_g"omw40  
int[] temp=new int[data.length]; D|8sjp4  
mergeSort(data,temp,0,data.length-1); 7J </7\  
} ;NN(CKZ9A  
Q:Nwy(,I  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2!"\;/  
int i, j, k; O_%PBgcJr  
int mid = (l + r) / 2; @pEO@bbg>  
if (l == r) EzeDShN=J  
return; 9cx!N,R t  
if ((mid - l) >= THRESHOLD) VAG+y/q  
mergeSort(data, temp, l, mid); d%[`=fs]|m  
else (,)vak&t  
insertSort(data, l, mid - l + 1); ]CtoK%k  
if ((r - mid) > THRESHOLD) e-duZ o  
mergeSort(data, temp, mid + 1, r); DftGy:Ah3  
else 0wa!pE"  
insertSort(data, mid + 1, r - mid); (tz_D7c$F  
d >wmg*J  
for (i = l; i <= mid; i++) { xSMp[j  
temp = data; SBYMDKZ  
} WEY97_@  
for (j = 1; j <= r - mid; j++) { xs83S.fHg  
temp[r - j + 1] = data[j + mid]; !xx> lX5  
} \p=W4W/  
int a = temp[l]; `!>dbR&1  
int b = temp[r]; Jr*S2 z<*  
for (i = l, j = r, k = l; k <= r; k++) { U{:(j5m  
if (a < b) { Z2pN<S{5  
data[k] = temp[i++]; \w@_(4")Qb  
a = temp; Rs( CrB/M  
} else { H--*[3".  
data[k] = temp[j--]; q4#f *]  
b = temp[j]; O+UV\  
} Eg- Mm4o  
} 6pdl,5[x-  
} Lb3K};SIV  
2 vJ[vsrFv  
/** +e3WwUx  
* @param data o- e,  
* @param l [C~)&2wh>  
* @param i ^Hhw(@`qf  
*/ %JA&O  
private void insertSort(int[] data, int start, int len) { >[P7Zlwv4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ws=9u-  
} GVHfN5bTqn  
} +68K[s,FD  
} ~)_ ?:.Da  
} "!_ 4%z-  
94k)a8-!  
堆排序: {-7yZ]OO$  
EX_sJc  
package org.rut.util.algorithm.support; MnrGD>M@|  
Z!=Pc$?  
import org.rut.util.algorithm.SortUtil; D A)0Y_  
bCx1g/   
/** cTIwA:)D  
* @author treeroot CTrs\G  
* @since 2006-2-2 BQJ`vIa  
* @version 1.0 D` `NQ`>A  
*/ *e"GQd?  
public class HeapSort implements SortUtil.Sort{ X!A]V:8dk  
sz2SWk^&  
/* (non-Javadoc) r/$)c_x`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 22|M{  
*/ 7[.Q.3FL  
public void sort(int[] data) { i11GW  
MaxHeap h=new MaxHeap(); <W[8k-yOV`  
h.init(data); sq6%=(q(?  
for(int i=0;i h.remove(); {'Qk>G s  
System.arraycopy(h.queue,1,data,0,data.length); (l!D=qy  
} -O> mY)  
mP .&fS  
private static class MaxHeap{ dK(%u9v  
j{w,<Wt>  
void init(int[] data){ eYX_V6c  
this.queue=new int[data.length+1]; ~m09yc d<  
for(int i=0;i queue[++size]=data; V1b_z  
fixUp(size); }ok nB  
} t~W4o8<w  
} % oL&~6l$  
\t(r@q q  
private int size=0; a=T7w;\h  
0}7Rm>  
private int[] queue; jl0Eg  
r-Xe<|w  
public int get() { xS-nO_t 'E  
return queue[1]; Nb9V/2c;V  
} OVo  
x^#{2}4u  
public void remove() { .dLX'84fY  
SortUtil.swap(queue,1,size--); e2o9)=y  
fixDown(1); DW%K'+@M  
} ?9okjLp1n  
file://fixdown D}/.;]w<[&  
private void fixDown(int k) { gx9sBkoq5D  
int j; *]| JX&  
while ((j = k << 1) <= size) { T2PFE4+Dp  
if (j < size %26amp;%26amp; queue[j] j++; V5@[7ncVf  
if (queue[k]>queue[j]) file://不用交换 ue:P#] tx  
break; vKOn7  
SortUtil.swap(queue,j,k); 6{r[Dq  
k = j; /ZN5WK  
} AdS_-Cm  
} sU_4+Mk  
private void fixUp(int k) { ]fS~N9B  
while (k > 1) { &OR*r7*Z  
int j = k >> 1; ,) jB<`  
if (queue[j]>queue[k]) WHavz0knf[  
break; wQS w&G  
SortUtil.swap(queue,j,k); $ 5-2 cL  
k = j; @`*YZq>p  
} L , Fso./y  
} 2u H\8A+'f  
[_G0kiI}W"  
} VP[!ji9P   
5$Q`P',*Ua  
} im[gbac  
4qcIoO  
SortUtil: <).qe Z  
kL2sJX+  
package org.rut.util.algorithm; :+^llz  
>b](v)  
import org.rut.util.algorithm.support.BubbleSort; =0fx6V  
import org.rut.util.algorithm.support.HeapSort; 959jp85  
import org.rut.util.algorithm.support.ImprovedMergeSort; <l/Qf[V  
import org.rut.util.algorithm.support.ImprovedQuickSort; s/0FSv x  
import org.rut.util.algorithm.support.InsertSort; >:nJTr  
import org.rut.util.algorithm.support.MergeSort; R:m=HS_  
import org.rut.util.algorithm.support.QuickSort; QD VA*6F  
import org.rut.util.algorithm.support.SelectionSort; D)cwttH  
import org.rut.util.algorithm.support.ShellSort; #@"rp]1xv  
>ZsK5v  
/** +Z(VWu6  
* @author treeroot  #X_M  
* @since 2006-2-2 {v/6|  
* @version 1.0 <rmV$_  
*/ @<JQn^M  
public class SortUtil { 4DM|OL`w  
public final static int INSERT = 1; vrx3O  
public final static int BUBBLE = 2; CnA)>4E*'  
public final static int SELECTION = 3; emIbGkH  
public final static int SHELL = 4; Pg C]@Q%  
public final static int QUICK = 5; n:)Y'52}  
public final static int IMPROVED_QUICK = 6; {X"]92+  
public final static int MERGE = 7; dg8\(G  
public final static int IMPROVED_MERGE = 8; E?o8'r  
public final static int HEAP = 9; pra&A2Y\  
+mv%z3"j;  
public static void sort(int[] data) { r:Cid*~m  
sort(data, IMPROVED_QUICK); \1_&?( pU  
} [M>_(u6  
private static String[] name={ [+7X&B  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [kkcV5I-  
}; n}kz&,  
D|#(zjl@  
private static Sort[] impl=new Sort[]{ &g>+tkC  
new InsertSort(), '2{o_<m  
new BubbleSort(), nE%qm -  
new SelectionSort(), V7i`vo3Cc  
new ShellSort(), }}R!Y)  
new QuickSort(), {0 {$.L  
new ImprovedQuickSort(), rrRC5h  
new MergeSort(), "evV/Fg (  
new ImprovedMergeSort(), 5LH ]B  
new HeapSort() >9|+F [Fc  
}; )Q?[_<1Y+  
lI<8)42yq  
public static String toString(int algorithm){ G<1mj!{Vp  
return name[algorithm-1]; Xq^{P2\w1  
} " N4]e/.V  
niBpbsO  
public static void sort(int[] data, int algorithm) { L]")TQ  
impl[algorithm-1].sort(data); 4`]1W,t  
} 1_]l|`Po  
AOUO',v  
public static interface Sort { "ET"dMxU  
public void sort(int[] data); #JM*QVzv  
} .JjuY'-Q  
biK.HL\V  
public static void swap(int[] data, int i, int j) { &|*|  
int temp = data; >X)G`N@ !  
data = data[j]; H>9$L~  
data[j] = temp; =Ybu_>  
} aQ\O ]gCE  
} _?<Fc8F  
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