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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。 <Xsy{7  
插入排序: nX|f?5 O  
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package org.rut.util.algorithm.support; XIAHUT5~J  
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import org.rut.util.algorithm.SortUtil; H:d@@/  
/** d*e0/#s  
* @author treeroot d\_$Nb*  
* @since 2006-2-2 ]hPu  
* @version 1.0 Ig sK7wn  
*/ ^bZ'z  
public class InsertSort implements SortUtil.Sort{ %)|pUa&  
ey~5DY7  
/* (non-Javadoc) Lcx)wof  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (rHS2SA\5  
*/ X(`wj~45VX  
public void sort(int[] data) { r^m8kYezQ  
int temp; `k 5'nnyP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J ^y1=PM  
} IYo{eX~=  
} =u5a'bp0;;  
} :?*|Dp1  
kma)DW  
} /5l"rni   
GbLuX U  
冒泡排序: 1TagQ  
<yw6Om:n<  
package org.rut.util.algorithm.support; ?51Y&gOEZ  
=nQgS.D  
import org.rut.util.algorithm.SortUtil; "zn<\z$l  
* 7<{Xbsj^  
/** TspuZR@2  
* @author treeroot su/!<y  
* @since 2006-2-2 .}wVM`81z  
* @version 1.0 g p2S   
*/ 2+2Gl7" s  
public class BubbleSort implements SortUtil.Sort{ bI_6';hq!  
DxFmsjX[L  
/* (non-Javadoc) S^Lu RF]F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .;1tu+S  
*/ *Va;ra(V2  
public void sort(int[] data) { =Ts3O0"[  
int temp; Hz*5ZIw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .9cQq/{b  
if(data[j] SortUtil.swap(data,j,j-1); eNwF<0}  
} ~6)A/]6  
} x'4q`xDa  
} .d JX,^  
} [dQL6k";b  
kgq"b)  
} Xiy9Oeq2uh  
<? Z[X{  
选择排序: ]d4`PXI  
|8bqn^@$t  
package org.rut.util.algorithm.support; b.LMJ'1  
&zxqVI$4  
import org.rut.util.algorithm.SortUtil; y&-1SP<  
IpJMq^ Z  
/** l8XgzaW  
* @author treeroot p>g5WebBN  
* @since 2006-2-2 4P406,T]r  
* @version 1.0 [eWZ^Eh"I  
*/ VIXY?Ua  
public class SelectionSort implements SortUtil.Sort { e={X{5z0  
xzZ2?z Wi  
/* e2~$=f-  
* (non-Javadoc) bvxol\7;  
* @%oHt*u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X6hp}  
*/ 8l?mNapy  
public void sort(int[] data) { _+OnH!G0  
int temp; 8(6(,WwP}  
for (int i = 0; i < data.length; i++) { <WHu</  
int lowIndex = i; A>?_\<Gp  
for (int j = data.length - 1; j > i; j--) { .qN|.:6a  
if (data[j] < data[lowIndex]) { Yq$KYB j  
lowIndex = j; <r@w`G  
} nmH1Wg*aW  
} sRMz[n 5k  
SortUtil.swap(data,i,lowIndex); _5t~g_(1OK  
} +;T `uOF}  
} vuNt+  
!R 2;]d*  
} bPlqS+ai_  
)U?5O$M;lE  
Shell排序: tyW5k(>  
R2e":`0I  
package org.rut.util.algorithm.support; *N C9S,eSP  
]FQO@ y  
import org.rut.util.algorithm.SortUtil; ]g3RVA%\l  
5 $vUdDTg  
/** 6SJryf~w  
* @author treeroot @(m+B\  
* @since 2006-2-2 @X|Mguq5  
* @version 1.0 )$> pu{o  
*/ KE~l#=S  
public class ShellSort implements SortUtil.Sort{ $+P6R`K  
4kNiS^h  
/* (non-Javadoc) I: L}7uA[t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ma gZmY~  
*/  [f1'Qb  
public void sort(int[] data) { Fv<^\q  
for(int i=data.length/2;i>2;i/=2){ #80 [q3  
for(int j=0;j insertSort(data,j,i); -lb,0   
} 5}+&Em":  
} YLx4qE  
insertSort(data,0,1); lWR".  
} |+aUy^  
RCL}bE  
/** -](NMRqfN  
* @param data C'wRF90  
* @param j Sb/`a~q ^  
* @param i M zRliH8e  
*/ `hVi!Q]*P  
private void insertSort(int[] data, int start, int inc) { @{X<|,W9w  
int temp; ~fht [S?@M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S{0iPdUC  
} PX} ~  
} jQ"z\}Wf  
} &c|3v!  
4X1!t   
}  UZV\]Y  
qdOUvf  
快速排序: lB(E:{6OZ  
qDV t  
package org.rut.util.algorithm.support; @mJ# ~@*(  
"KiTjl`M,  
import org.rut.util.algorithm.SortUtil; fHLt{!O  
XHh!Q0v;  
/** 1^HmM"DD  
* @author treeroot pnpx`u;  
* @since 2006-2-2 4#D<#!]^  
* @version 1.0 7~I*u6zY  
*/ L,+m5wKj[  
public class QuickSort implements SortUtil.Sort{ }Z,xF`  
0p31C7!  
/* (non-Javadoc) z{q|HO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >x3$Ld  
*/ Od,P,t9  
public void sort(int[] data) { Fs3rsig  
quickSort(data,0,data.length-1); -_KO}_  
} 9'5`0$,|^  
private void quickSort(int[] data,int i,int j){ '|7'dlW  
int pivotIndex=(i+j)/2; FB>^1B]]  
file://swap *M]@}'N  
SortUtil.swap(data,pivotIndex,j); Sc/\g  
D^30R*gV  
int k=partition(data,i-1,j,data[j]); om1@;u8u  
SortUtil.swap(data,k,j); %FhUjHm  
if((k-i)>1) quickSort(data,i,k-1); nn?h;KzB  
if((j-k)>1) quickSort(data,k+1,j); y!kU0  
%`# HGji)  
} ]Uu:t  
/** 6/=0RTd  
* @param data b)(rlX  
* @param i d$gT,+|vu  
* @param j # GbfFoE  
* @return }|j \QjH  
*/ _-R&A@  
private int partition(int[] data, int l, int r,int pivot) { y[64O x  
do{ b;5&V_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h6(\ tRd!\  
SortUtil.swap(data,l,r); QB"Tlw(  
} n90DS/Yx  
while(l SortUtil.swap(data,l,r); xe&w.aBI>  
return l; t9\}!{<s  
} N fBH  
QSNPraT  
} !j8 DCVb  
LZI[5tA"  
改进后的快速排序: `Q!#v{  
Oj,v88=  
package org.rut.util.algorithm.support; iU/v; T(  
f =MP1q[  
import org.rut.util.algorithm.SortUtil; m5_  
"2=v:\~=  
/** #7r13$>!  
* @author treeroot ]5',`~jkF  
* @since 2006-2-2 _g2"D[I%  
* @version 1.0 *mjPNp'3{m  
*/ N!~5S`  
public class ImprovedQuickSort implements SortUtil.Sort { dQQ!QbI(.  
6BdK)s  
private static int MAX_STACK_SIZE=4096; c2RQwtN|  
private static int THRESHOLD=10; xh:A*ZI=7  
/* (non-Javadoc) dI?x&#(vw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L&,&SDr  
*/ ]pq(Q:"P,5  
public void sort(int[] data) { PY76;D*`  
int[] stack=new int[MAX_STACK_SIZE]; pdySip<  
tu:W1?  
int top=-1; 4G3u8)b=  
int pivot; $}8@?>-w  
int pivotIndex,l,r; BA6(Owb  
0CpE,gg  
stack[++top]=0; wec_=E qK0  
stack[++top]=data.length-1; v vzPt.ag  
Xx+eGV";`  
while(top>0){ '',g}WvRwe  
int j=stack[top--]; Ial"nV0>0  
int i=stack[top--]; wM1&_%N  
\&MJ(F>vJ  
pivotIndex=(i+j)/2;  &Sdf0"  
pivot=data[pivotIndex]; 3]li3B'  
<]f{X<ef  
SortUtil.swap(data,pivotIndex,j); cw/E?0MWb  
+'0V6 \y  
file://partition Lyq[gQjr  
l=i-1; vI20G89E  
r=j; ~$jRn(2  
do{ V.-cm51I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :SD#>eD0  
SortUtil.swap(data,l,r); =eyPo(B  
} mfx-Ja_a  
while(l SortUtil.swap(data,l,r); JI[{n~bhGD  
SortUtil.swap(data,l,j); z)ndj 1,#)  
@gnLY  
if((l-i)>THRESHOLD){ jR2^n`D  
stack[++top]=i; odTa 2$O  
stack[++top]=l-1; HV=P! v6  
} 1$)}EL   
if((j-l)>THRESHOLD){ & d_2WQ}  
stack[++top]=l+1; sH.,O9'r  
stack[++top]=j; JLak>MS  
} gx.\&W b  
Yq>K1E|  
} {_R{gpj'  
file://new InsertSort().sort(data); 64qqJmG 3  
insertSort(data); (_3QZ  
} UB,0c)   
/** gE9x+g  
* @param data KU^|T2s%  
*/ :{s0tw>Z  
private void insertSort(int[] data) { yioX^`Fc(~  
int temp; )4R[C={  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *M-'R*Np  
} D]twid~OS  
} K]&i9`>N   
} fXSuJ<G  
u&Yd+');  
} Z.b?Jzj  
W1JvLU5L*r  
归并排序: @ :}la  
! NJGW  
package org.rut.util.algorithm.support; [ D"5@  
uhU'm@JZ  
import org.rut.util.algorithm.SortUtil; /5X_gjOL,  
#wZbG|%  
/** 0|6Y% a\U  
* @author treeroot a Z8f>t1Q  
* @since 2006-2-2 E(_lm&,4+  
* @version 1.0 84 <zTmm  
*/ aA]wFZ  
public class MergeSort implements SortUtil.Sort{ :W#?U yo  
D `av9I  
/* (non-Javadoc) L;=3n[^x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >avkiT2  
*/ X]_9g[V  
public void sort(int[] data) { Gi\Z"MiBZ  
int[] temp=new int[data.length]; 3X#Cep20a  
mergeSort(data,temp,0,data.length-1); E.,  
} BP@V:z  
0jt@|3  
private void mergeSort(int[] data,int[] temp,int l,int r){ uNca@xl'  
int mid=(l+r)/2; -^JPY)\R  
if(l==r) return ; n}C0gt-  
mergeSort(data,temp,l,mid);  i (`Q{l  
mergeSort(data,temp,mid+1,r); 'vV+Wu#[  
for(int i=l;i<=r;i++){ JkQ\r$ Y.  
temp=data; x *a_43`  
} 11%Zx3  
int i1=l; K j~!E H"  
int i2=mid+1; }l&y8,[:  
for(int cur=l;cur<=r;cur++){ >D Ai-`e  
if(i1==mid+1) ]GDjR'[z  
data[cur]=temp[i2++]; s@p:XO  
else if(i2>r) {I/t3.R`  
data[cur]=temp[i1++]; Rm}G4Pq  
else if(temp[i1] data[cur]=temp[i1++]; ;(rK^*`fO  
else Lb?0<  
data[cur]=temp[i2++]; I%{ 1K+V/  
} LfJMSscfv  
} >`<qa!9  
o7^0Lo5Z?  
} .LGA0  
xyHv7u%*  
改进后的归并排序: z'*{V\  
\wR\i^  
package org.rut.util.algorithm.support; bc;?O`I<  
U?ZWDr"*`w  
import org.rut.util.algorithm.SortUtil; E)|Bl>  
fOdX2{7m  
/** !b$]D?=}  
* @author treeroot I|Mw*2U  
* @since 2006-2-2 & x$ps  
* @version 1.0 ZH`(n5  
*/ ^O}J',Fm%f  
public class ImprovedMergeSort implements SortUtil.Sort { 4wWfaL5"  
u4'B  
private static final int THRESHOLD = 10; 4>/i,_&K K  
xZ(d*/6E  
/* 4%4Yqx )  
* (non-Javadoc) ^V7)V)Z;0  
* |pBvy1e4)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t^2$ent  
*/ >Bu _NoM  
public void sort(int[] data) { wxN&k$`a  
int[] temp=new int[data.length]; S4rm K&  
mergeSort(data,temp,0,data.length-1); NN5G '|i  
} 0Hx'C^m72  
],{M``]q  
private void mergeSort(int[] data, int[] temp, int l, int r) { 24sQon  
int i, j, k; w_DaldK*  
int mid = (l + r) / 2; s<oT,SPt  
if (l == r) PS0/O k  
return; %/BBl$~ji  
if ((mid - l) >= THRESHOLD) 221}xhn5  
mergeSort(data, temp, l, mid); b;nqhO[f}  
else P76gJ@#m  
insertSort(data, l, mid - l + 1); <sX_hIA^Fx  
if ((r - mid) > THRESHOLD) deJ/3\t  
mergeSort(data, temp, mid + 1, r); I:0dz:T7*  
else Gyrc~m[$  
insertSort(data, mid + 1, r - mid); PR*EyM[T  
9< S  
for (i = l; i <= mid; i++) { u$X =2u:P  
temp = data; I}m>t}QRI_  
} YN~1.!F  
for (j = 1; j <= r - mid; j++) { uJ8FzS>[V  
temp[r - j + 1] = data[j + mid]; 1^ iLs  
} (j(9'DjP  
int a = temp[l]; 1~j,A[&|<  
int b = temp[r]; 0#ON}l)>  
for (i = l, j = r, k = l; k <= r; k++) { J(A+mYr{:  
if (a < b) { KFy|,@NI  
data[k] = temp[i++]; 5kADvi.  
a = temp; 5DO}&%.xt  
} else { Vy^mEsQC+h  
data[k] = temp[j--]; @1U6sQ  
b = temp[j]; [z6P]eC7  
} :Zo^Uc:*w  
} M:L-j{?y_  
} # %'%LY=  
RRzLQ7J  
/** t~.^92]s|  
* @param data ad9u;uS  
* @param l =LEzcq>XO  
* @param i eLbh1L  
*/ a&dP@)  
private void insertSort(int[] data, int start, int len) { r{_1M>F D!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >GzH_]  
} T'9M  
} !1@o Z(  
} c(Fo-4K  
} lE!.$L*k  
:9(w~bB9$  
堆排序: _@VKWU$$  
&B++ "f  
package org.rut.util.algorithm.support; db}lN  
&vIj(e9Y  
import org.rut.util.algorithm.SortUtil; >5zD0!bA  
ABL5T-*]  
/** 7M_GGjP  
* @author treeroot F!2VTPm9z  
* @since 2006-2-2 YG)7+94  
* @version 1.0 ,u!_mV  
*/ W)Y:2P<.  
public class HeapSort implements SortUtil.Sort{ uC6e2py<[  
l E* .9T  
/* (non-Javadoc) Ih;D-^RQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KXUJ*l-5  
*/ ju4wU; Nu  
public void sort(int[] data) { {UF|-VaG  
MaxHeap h=new MaxHeap(); RB;2  
h.init(data); 75A60Uw  
for(int i=0;i h.remove(); :5jor Vu  
System.arraycopy(h.queue,1,data,0,data.length); 23opaX5V=  
} @V@<j)3P  
6;Mv)|FJF  
private static class MaxHeap{ 3E>]6  
[|YJg]i-  
void init(int[] data){ 7t78=wpLc  
this.queue=new int[data.length+1]; !\5)!B  
for(int i=0;i queue[++size]=data; 'b+ Tio  
fixUp(size); `8TL*.9  
} E~8J<g E  
} z5sKV7&\[n  
u/wWD@,  
private int size=0; Jq+@%#G  
=,08D^xY  
private int[] queue; 6+C]rEY/o  
db3.X~Cn#s  
public int get() { 'lgS) m  
return queue[1]; W;U<,g '  
} N'|9rB2e  
g%D.sc)69  
public void remove() { 0 4oMgH>Vd  
SortUtil.swap(queue,1,size--); 5p/.( |b,  
fixDown(1); 5z" X>!?^  
} ^Nysx ~6  
file://fixdown "tj]mij2)G  
private void fixDown(int k) { [.;8GMW  
int j; clM6R  
while ((j = k << 1) <= size) { [kPl7[OL  
if (j < size %26amp;%26amp; queue[j] j++; h9~oS/%:  
if (queue[k]>queue[j]) file://不用交换 ;:bnLSPo  
break; $us7fuKE  
SortUtil.swap(queue,j,k); C.se/\PE  
k = j; mk6>}z*  
} <u  
} lO}I>yo}\  
private void fixUp(int k) { |8{ \j*3  
while (k > 1) { 2,.8 oa(  
int j = k >> 1; 8Z 0@-8vi  
if (queue[j]>queue[k]) )1O|+m k  
break; 8{Vt8>4  
SortUtil.swap(queue,j,k); 9v7}[`^  
k = j; >-(,BfZ  
} 2 F ~SH  
} ,rhNXx  
%B| Ca&  
} <S0gIg`)  
NF7+Gp6?q  
} )xTu|V   
5L\Im^  
SortUtil: @X_)%Y-^O  
e^hI[LbNC  
package org.rut.util.algorithm; I3Ad+]v  
y"zZ9HQM  
import org.rut.util.algorithm.support.BubbleSort; mf2Qu  
import org.rut.util.algorithm.support.HeapSort; cn'r BY  
import org.rut.util.algorithm.support.ImprovedMergeSort; XZ/cREz^s  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^5-SL?E  
import org.rut.util.algorithm.support.InsertSort; /)r[}C0   
import org.rut.util.algorithm.support.MergeSort; Ul:M=8nE%  
import org.rut.util.algorithm.support.QuickSort; &VVvZ@X;  
import org.rut.util.algorithm.support.SelectionSort; [kI[qByf  
import org.rut.util.algorithm.support.ShellSort; ,4(m.P10  
WX $AOnEv  
/** ?nf4K/IjZ!  
* @author treeroot }/7rA)_  
* @since 2006-2-2 KoFWI_(b  
* @version 1.0 YRj"]= 5N  
*/ Wix4se1Ac  
public class SortUtil { @EH@_EwYV  
public final static int INSERT = 1; 85+w\KuEY  
public final static int BUBBLE = 2; D]K?ntS[*  
public final static int SELECTION = 3; |1/?>=dDm  
public final static int SHELL = 4; :A,7D(H|  
public final static int QUICK = 5; I&5cUj{GX-  
public final static int IMPROVED_QUICK = 6; :n oZ p:a  
public final static int MERGE = 7; =Unu>p}2V  
public final static int IMPROVED_MERGE = 8; _147d5  
public final static int HEAP = 9; CW~c<,"  
j8ac8J,}c  
public static void sort(int[] data) { uecjR8\e  
sort(data, IMPROVED_QUICK); Z'c9xvy5  
} @u8kNXT;h  
private static String[] name={ %v]-:5g'|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [Y6ZcO/-i  
}; gy/bA  
IZZ $p{  
private static Sort[] impl=new Sort[]{ kyUG+M  
new InsertSort(), 7nbaR~ZV  
new BubbleSort(),  e:6mz\J  
new SelectionSort(), lq)[  
new ShellSort(), !GoHCe[10  
new QuickSort(), CrX1qyR  
new ImprovedQuickSort(), qkq^oHI  
new MergeSort(), <;dFiI-GO#  
new ImprovedMergeSort(), Kj|\ALI':  
new HeapSort() *YTv"  
}; Qy) -gax:,  
:tLMh08h  
public static String toString(int algorithm){ e`% <D[-  
return name[algorithm-1]; ZZW%6-B  
} hj3wxH.}  
Bv}nG|  
public static void sort(int[] data, int algorithm) { <&}N[  
impl[algorithm-1].sort(data); 0JLQ.%_  
} +kOXa^K  
)'`@rq!  
public static interface Sort { FX/f0C3CK  
public void sort(int[] data); Qr[".>+  
} ]DI%7kw'  
;vgaFc]  
public static void swap(int[] data, int i, int j) { \B8[UZA.&  
int temp = data; 2!}rH w  
data = data[j]; .IORvP-M&  
data[j] = temp; f_ > lz  
} c)17[9"  
} f`p"uLNo<  
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