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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。 +hL+3`TD#H  
插入排序: Tyt:Abym=  
(lF;c<69  
package org.rut.util.algorithm.support; AEaT  
2)]C'  
import org.rut.util.algorithm.SortUtil; x"h0Fe?J  
/** :" Q!Q@>  
* @author treeroot TtEc~m  
* @since 2006-2-2 k.? aq  
* @version 1.0 wOQ-sp0q0  
*/ 5\1Z"?  
public class InsertSort implements SortUtil.Sort{ dO.?S89L  
cY?< W/  
/* (non-Javadoc) $by-?z((  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^! /7  
*/ l4u@0;6P  
public void sort(int[] data) { V!G&Aen  
int temp; -G&>b D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4K`N3  
} 3)v6N_  
} X||Z>w}v  
} OJ$169@;  
X_|W#IM*+  
} <S I& e/  
.QOQqU*2I  
冒泡排序: :"? boA#L  
(UmoG  
package org.rut.util.algorithm.support; GczGW4\P'  
U*F|Z4{W  
import org.rut.util.algorithm.SortUtil; INSI$tA~  
-\:#z4Tc  
/** Q# xeu  
* @author treeroot 'SF+P)Kmz  
* @since 2006-2-2 |eL&hwqzG  
* @version 1.0 iA*Z4FKkT  
*/ a*JM2^,HO  
public class BubbleSort implements SortUtil.Sort{ |,M&ks  
3nv7Uz  
/* (non-Javadoc) .{ ^4I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S W(h%`U  
*/ 0-cqux2U  
public void sort(int[] data) { 1\1a;Q3W%,  
int temp; -e7|DXj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Knsb`1"E^6  
if(data[j] SortUtil.swap(data,j,j-1); b9%}< w  
} Pm; /Ua  
} 5(bG  
} qQN&uBQ[  
} Ti`<,TA54  
{H s" "/sb  
} 7?j$Lwt  
;hR!j!3}  
选择排序: e'aKI]>a  
:0>wm@qCQ  
package org.rut.util.algorithm.support; v<bq1QG  
`HU`=a&d  
import org.rut.util.algorithm.SortUtil; 0 z{S@  
n m(yFX?=  
/** f" Yj'`6  
* @author treeroot j{N;2#.u  
* @since 2006-2-2 Z'dY,<@  
* @version 1.0 TuY{c%qQ:  
*/ \W;~[-"#  
public class SelectionSort implements SortUtil.Sort { \V`O-wcJ]S  
@OAX#iQl  
/* 0(#HMBE8  
* (non-Javadoc) pHFlO!#]|  
* *)"U5A/v)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w~M5)b  
*/ KTxdZt  
public void sort(int[] data) { on(P  
int temp; ~J!a?]  
for (int i = 0; i < data.length; i++) { #EtS9D'd+  
int lowIndex = i; d_#\^!9  
for (int j = data.length - 1; j > i; j--) { m>2b %GTh  
if (data[j] < data[lowIndex]) { lGqwB,K$z4  
lowIndex = j; XPXC7_fV  
} {"8\~r&b  
} W+PAlsOC  
SortUtil.swap(data,i,lowIndex); */xI#G,O+  
} e3YZ-w^W~h  
} VHVU*6_w  
t+Mr1e  
} XP5q4BM  
=:`1!W0I  
Shell排序: T_Q/KhLU  
DrbjqQL+.  
package org.rut.util.algorithm.support; =N01!?{  
~!~VC)a*  
import org.rut.util.algorithm.SortUtil;  A$ %5l  
G;615p1  
/** @va{&i`%A7  
* @author treeroot ZmO/6_nU?  
* @since 2006-2-2 I^/Ugu  
* @version 1.0 Gdnk1_D>  
*/ wE3^6  
public class ShellSort implements SortUtil.Sort{ ba|x?kz  
< 'op  
/* (non-Javadoc) !Jb?r SJ.h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4?M= ?K0  
*/ O; EI&  
public void sort(int[] data) { YD2M<.U  
for(int i=data.length/2;i>2;i/=2){ //KTEAYyy#  
for(int j=0;j insertSort(data,j,i); !.iu_xJ  
} H7G*Vg  
} mn\e(WoX  
insertSort(data,0,1); KrVF>bq+  
} ',8]vWsl  
{@g3AG%  
/** I%%\;Dy  
* @param data x*5' 6  
* @param j Q@%VJPLv.  
* @param i AQ. Y-'\t  
*/ `d6 {Tli  
private void insertSort(int[] data, int start, int inc) { ~$#DB@b  
int temp; f[ GH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MUz.-YRt  
} oLk>|J  
} a}`4BMi3  
} +^<CJNDL9  
hF+YZU]rT  
} \l_RyMi  
.rSeJZzuj  
快速排序: ~CldqXeI  
2i', e  
package org.rut.util.algorithm.support; #^<7VS!x  
N::_JH? ^=  
import org.rut.util.algorithm.SortUtil; `y0ZFh1>X  
00?^!';  
/** *gHOH!K,S  
* @author treeroot &PD4+%!  
* @since 2006-2-2 IvetQ+  
* @version 1.0 gd.P%KC!g  
*/ `j[)iok  
public class QuickSort implements SortUtil.Sort{ v"O{5LM"  
_]1dm)%  
/* (non-Javadoc) `kyr\+hp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Xm [  
*/ 9g >]m 6  
public void sort(int[] data) { 8U\;N  
quickSort(data,0,data.length-1); u%a2"G|  
} 0@,,YZ f  
private void quickSort(int[] data,int i,int j){ X"J79?5  
int pivotIndex=(i+j)/2; Ts0.Ck  
file://swap wke$  
SortUtil.swap(data,pivotIndex,j); $ePAsJ  
~6!=_"  
int k=partition(data,i-1,j,data[j]); ?)Z~H,Q(z  
SortUtil.swap(data,k,j); R_uA!MoLs  
if((k-i)>1) quickSort(data,i,k-1); {~16j"  
if((j-k)>1) quickSort(data,k+1,j); {i~qm4+o  
v;el= D  
} INW8Q`[F  
/** ,f$A5RN  
* @param data ~t<BZu  
* @param i cG?RisSZ  
* @param j e x $d~  
* @return &xr?yd  
*/ )Be}Ev#)Zx  
private int partition(int[] data, int l, int r,int pivot) { IyOujdKa  
do{ : i3-7k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9XF+? x  
SortUtil.swap(data,l,r); [HtU-8:  
} .zlUN0oe  
while(l SortUtil.swap(data,l,r); $]\N/}1v  
return l; rv;w`f  
} o?$D09j;;  
^ft_1d[  
} V.'EP  
2 'xT%  
改进后的快速排序: *`ji2+4Sjw  
/4w&! $M-  
package org.rut.util.algorithm.support; {qx}f^WV  
+q) ^pCC  
import org.rut.util.algorithm.SortUtil; (BMFGyE3  
Cf<i"   
/** ~c! XQJ  
* @author treeroot p8[Z/]p  
* @since 2006-2-2 [>;U1Wt  
* @version 1.0 RNcHU  
*/ bY+Hf\A  
public class ImprovedQuickSort implements SortUtil.Sort { }_3<Q\j  
JmWN/mx  
private static int MAX_STACK_SIZE=4096; lj@c"Yrk  
private static int THRESHOLD=10; LEc%BQx  
/* (non-Javadoc) _R]la&^2F\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q<r{ps  
*/ u` `FD  
public void sort(int[] data) { h<6@&yzp  
int[] stack=new int[MAX_STACK_SIZE]; P et0yH  
:v Pzw!  
int top=-1; bCdEItcD  
int pivot; 3@KX|-  
int pivotIndex,l,r; 0>4:(t7h\  
'RTz*CSZ  
stack[++top]=0; )+N%!(ki  
stack[++top]=data.length-1; ,;O+2TX  
x76<u:  
while(top>0){ i~ n>dc YW  
int j=stack[top--]; ]|Vm*zO  
int i=stack[top--]; hi*\5(uH  
{#zJx(2yG  
pivotIndex=(i+j)/2; 87>\wUJ  
pivot=data[pivotIndex]; lk%rE  
Hl?\P6   
SortUtil.swap(data,pivotIndex,j); $a(wM1S4  
v\c.xtjI5x  
file://partition kJlRdt2  
l=i-1; ,l#V eC  
r=j; Y2yVl+  
do{ o\g",O4-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PC7U&*x@  
SortUtil.swap(data,l,r); +g/y)]AP  
} nr! kx)j  
while(l SortUtil.swap(data,l,r); F[l{pc "C  
SortUtil.swap(data,l,j); S)n ~^q  
Nf}G "!  
if((l-i)>THRESHOLD){ lmp0Ye|  
stack[++top]=i; AHIk7[w  
stack[++top]=l-1; R% l=NHB}  
} 0V}%'Ec<e  
if((j-l)>THRESHOLD){ !n}"D:L(  
stack[++top]=l+1; k,0JW=Vh>|  
stack[++top]=j; Z '/:  
} Wepa;  
rMH\;\ I|U  
} aHXd1\6m  
file://new InsertSort().sort(data); 2Rc#{A  
insertSort(data); :,fs' !  
} {3i.U028]  
/** <JuP+\JAm  
* @param data v<ASkkh>  
*/ Elo m_   
private void insertSort(int[] data) { {uM*.]  
int temp; >j4;{r+eQw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -L NJ*?b  
} _Qt  
} Ty}'A(U  
} jav7V"$  
^|5vmI'E  
} Q=)$  
rFh!&_  
归并排序: {dH87 nt  
i/6(~v  
package org.rut.util.algorithm.support; pV9$Vg?-H  
'P0:1">  
import org.rut.util.algorithm.SortUtil; l:-$ulAx  
az*c0Z<pl  
/** bX Q*d_]WT  
* @author treeroot V`fp%7W  
* @since 2006-2-2 e4fh<0gX  
* @version 1.0 _ho9}7 >  
*/ l ~b# Y&  
public class MergeSort implements SortUtil.Sort{ @SjISZw_  
;.Zgt8/.  
/* (non-Javadoc)  l+HmG< P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LUc!a4i"fO  
*/ v6uR[18  
public void sort(int[] data) { ]$oo1ssZ1  
int[] temp=new int[data.length]; _C2iP[YwQ{  
mergeSort(data,temp,0,data.length-1);  ?12[8   
} Hb55RilC  
"4NcszEN  
private void mergeSort(int[] data,int[] temp,int l,int r){ Q"7vzri  
int mid=(l+r)/2; X [IVK~D}z  
if(l==r) return ; ~Ap.#VIc'  
mergeSort(data,temp,l,mid); L{1MyR7`I+  
mergeSort(data,temp,mid+1,r); (yA`h@@WS  
for(int i=l;i<=r;i++){ +txFdc  
temp=data; 0`UI^Y~Q  
} hGh91c;4  
int i1=l; ]dIcW9a  
int i2=mid+1; G%ytp=N  
for(int cur=l;cur<=r;cur++){ e}>3<Dh  
if(i1==mid+1) 3N c#6VI  
data[cur]=temp[i2++]; CoZOKRoaH  
else if(i2>r) ~/^q>z!\4  
data[cur]=temp[i1++]; iOY: a  
else if(temp[i1] data[cur]=temp[i1++]; K93L-K^J  
else 0RFBun{  
data[cur]=temp[i2++]; H j [!F%  
} 3D 4-Wo4  
} RK )1@Tz7!  
!=Scpo_  
} AS4mJ UU9  
&~=FX e0S  
改进后的归并排序: R*0]*\C z  
OFe-e(c1  
package org.rut.util.algorithm.support; f[}(E  
.>#X*u  
import org.rut.util.algorithm.SortUtil; qofD@\-  
1 A%0y)]  
/** Th_PmkvC  
* @author treeroot 6}l[%8  
* @since 2006-2-2 r)S:-wP  
* @version 1.0 ,>+B>lbJ*  
*/ S^s|/!>  
public class ImprovedMergeSort implements SortUtil.Sort { 4SVIdSA  
hKnAWKb0  
private static final int THRESHOLD = 10; +>3jMs~&  
fHK.q({Qc  
/* e&nE  
* (non-Javadoc) }#r awVe=  
* W{m_yEOf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Jm~Um!  
*/ PctXh, =  
public void sort(int[] data) { JR_%v=n~x  
int[] temp=new int[data.length]; ]sTbEw.[  
mergeSort(data,temp,0,data.length-1); ZJe^MnE (G  
} BItH0r7  
5G2G<[p5oQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { 40%fOu,u`  
int i, j, k; H-rxn  
int mid = (l + r) / 2; a[Nm< qV05  
if (l == r) !\VzX  
return; &V| kv"Wwj  
if ((mid - l) >= THRESHOLD) O^J=19Ri  
mergeSort(data, temp, l, mid); d.|*sZ&3p  
else e%s1D  
insertSort(data, l, mid - l + 1); AL!ppi  
if ((r - mid) > THRESHOLD) sZI"2[bk  
mergeSort(data, temp, mid + 1, r); 'ZJb`  
else +T\<oj%}2  
insertSort(data, mid + 1, r - mid); ,wf:Fr  
G2<$to~{  
for (i = l; i <= mid; i++) { a,36FF~&  
temp = data; H#i,Ve '  
} C7O8B;  
for (j = 1; j <= r - mid; j++) { S B~opN  
temp[r - j + 1] = data[j + mid]; zLgc j(;  
} Mw3$QRM  
int a = temp[l]; in K]+H]{  
int b = temp[r]; inY_cn?  
for (i = l, j = r, k = l; k <= r; k++) { v w 6$v  
if (a < b) { up{0ehr  
data[k] = temp[i++]; uI$n7\G!  
a = temp; mPU}]1*p  
} else { AR!v%Z49i  
data[k] = temp[j--]; uh2 F r  
b = temp[j]; kebk f,`p  
} 0BNH~,0u  
} 0C;Js\>3]  
}  )ut$644R  
Nyt*mbd5 {  
/** L(bDk'zi  
* @param data (/2rj[F&  
* @param l WH4rZ }Z`  
* @param i L[ZS17 ;*  
*/ mKjTJzS  
private void insertSort(int[] data, int start, int len) { 5kGQf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >yr;Y4y7K  
} P4HoKoj2`  
} *v%gNq  
} Y(t /=3c[  
} CuK>1_Dq  
0r_~LN^|[  
堆排序: sBYDo{0 1  
(V&8 WN  
package org.rut.util.algorithm.support; T9}~]zW7P  
sZ~03QvkT  
import org.rut.util.algorithm.SortUtil; i3mw.`7  
=xDxX#3  
/** g%tUkM  
* @author treeroot p6NPWaBR  
* @since 2006-2-2 vmEn$`&2t  
* @version 1.0 w&f>VB~,1  
*/ *#E_KW1RV  
public class HeapSort implements SortUtil.Sort{ V,rR*a&p  
&"W gO!pzD  
/* (non-Javadoc) \9@}0}%`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NC!B-3?x  
*/ xI<B)6D;f  
public void sort(int[] data) { Y@:l!4DI  
MaxHeap h=new MaxHeap(); GApvRR+Z  
h.init(data); c7{s'ifG  
for(int i=0;i h.remove(); J~xm[^0  
System.arraycopy(h.queue,1,data,0,data.length); x1Y/^ks@2  
} WY QVe_<z:  
50|nQ:u,  
private static class MaxHeap{ 5x|$q kI  
?]bx]Y;  
void init(int[] data){ % >a /m.$  
this.queue=new int[data.length+1]; *1!'ZfT;  
for(int i=0;i queue[++size]=data; $[b}r#P  
fixUp(size); U\, N  
} 9{U@s  
} @`+\v mfD  
<$hv{a  
private int size=0; ~8 UMwpl-  
{X2uFw Gi  
private int[] queue; V1Ojr~iM  
k%u fgHl!  
public int get() { -xLK/QAL  
return queue[1]; o3\^9-jmp  
} wSCI?  
o\ce|Dzt  
public void remove() { 7p\&D?  
SortUtil.swap(queue,1,size--); >);M\,1\I  
fixDown(1); B5+Q%)52  
} <&`Rf6  
file://fixdown }eA ) m  
private void fixDown(int k) { g~,iWoY  
int j; Y@q9   
while ((j = k << 1) <= size) { Z_dL@\#|  
if (j < size %26amp;%26amp; queue[j] j++; pzjNi=vhd  
if (queue[k]>queue[j]) file://不用交换 DF-PBVfpu  
break; D3,)H%5.y  
SortUtil.swap(queue,j,k); LttA8hf5q?  
k = j; +A1*e+/b\  
} RrH{Y0  
} AqQ5L>:Gq  
private void fixUp(int k) { i9rv8 "0>  
while (k > 1) { |7n%8JsY!"  
int j = k >> 1; uVhzJu.  
if (queue[j]>queue[k]) S76MY&Vx23  
break; -qvMMit%7  
SortUtil.swap(queue,j,k); dT&u}o3X  
k = j;  q^6#.}  
} N}[!QE  
} T*Ge67  
4JXvP1`  
} -G?IXgG  
-OmpUv-O"  
} Ktt(l-e+  
)+Z.J]$O-  
SortUtil: b&QI#w  
SYQP7oG9oQ  
package org.rut.util.algorithm; KRn[(yr`%  
yKK9b  
import org.rut.util.algorithm.support.BubbleSort; @].!}tz  
import org.rut.util.algorithm.support.HeapSort; \ kY:|T  
import org.rut.util.algorithm.support.ImprovedMergeSort; k#~oagW_Gw  
import org.rut.util.algorithm.support.ImprovedQuickSort; AY"wEyNU  
import org.rut.util.algorithm.support.InsertSort; sUR5Q/Q  
import org.rut.util.algorithm.support.MergeSort; FqGMHM\J  
import org.rut.util.algorithm.support.QuickSort; i4WHjeo\  
import org.rut.util.algorithm.support.SelectionSort; 65U\;Ew  
import org.rut.util.algorithm.support.ShellSort; khT[  
2*cc26o  
/** #u+qV!4  
* @author treeroot s:_j,/H0A}  
* @since 2006-2-2 "Dq^r9  
* @version 1.0 VM&Ref4  
*/ Y}q~ Km  
public class SortUtil { hMvJNI6O  
public final static int INSERT = 1; kEAF1RP:  
public final static int BUBBLE = 2; r~7}w4U  
public final static int SELECTION = 3; m :~y:.  
public final static int SHELL = 4; ,afO\oe>MG  
public final static int QUICK = 5; 8yDsl  
public final static int IMPROVED_QUICK = 6; Qi=0[  
public final static int MERGE = 7; i| ,}y`C#  
public final static int IMPROVED_MERGE = 8; Tj!\SbnA[  
public final static int HEAP = 9; /[/{m]  
rK}sQ4z=  
public static void sort(int[] data) { 1=9GV+`n  
sort(data, IMPROVED_QUICK); Z!fbc#L6  
} -`z%<)!Y  
private static String[] name={ `m#G'E I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x;} 25A|  
}; /F|VYl^_  
`)KGajB  
private static Sort[] impl=new Sort[]{ p15dbr1  
new InsertSort(), Ly2!(,FB.  
new BubbleSort(), :9x]5;ma  
new SelectionSort(), P\{s C6E  
new ShellSort(), 9jx>&MnWs  
new QuickSort(), 3fZoF`<a  
new ImprovedQuickSort(), pEN`6*  
new MergeSort(), d1t_o2  
new ImprovedMergeSort(), :M`~9MCRf  
new HeapSort() KjF8T7%  
}; &t_TLV 8T  
Vu4LC&q  
public static String toString(int algorithm){ :ec>[N~KG  
return name[algorithm-1]; Fe$o*r,  
} $83Qd  
[]yIz1P=j  
public static void sort(int[] data, int algorithm) { jeA2y jAC  
impl[algorithm-1].sort(data); +<V$G/"  
} =JP Y{'VO  
t.O~RE  
public static interface Sort { $$Ibr]$5  
public void sort(int[] data); T?jN/}qg  
} M _cm,|FF  
Hv:~)h$  
public static void swap(int[] data, int i, int j) { nG?Z* n  
int temp = data; K9VP@[zbJ  
data = data[j]; |DVFi2   
data[j] = temp; v/$<#2|  
} 86?~N  
} i*&b@.7N  
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