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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。 CRrEs 18;#  
插入排序: R\#5;W^  
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package org.rut.util.algorithm.support; QR8]d1+GV  
nGc'xQy0  
import org.rut.util.algorithm.SortUtil; W$J.B!O  
/** _FS #~z'j  
* @author treeroot nU\.`.39 +  
* @since 2006-2-2 T2)CiR-b  
* @version 1.0 Us pv^O9_  
*/ {TMng&  
public class InsertSort implements SortUtil.Sort{ qs_cC3"=%=  
/RxqFpu|.  
/* (non-Javadoc) B> \q!dX3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0oBAJP  
*/ 0]]OE+9<c  
public void sort(int[] data) { ba ,n/yH  
int temp; o_kZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |Zp') JiS  
} |UQ [pas  
} US-f<Wq  
} EGFPv'De  
R$`&g@P="  
} @KLX,1K  
ncOl}\Q9  
冒泡排序: l 6aD3?8LN  
/7,@q?v  
package org.rut.util.algorithm.support; `_ZbA#R,  
48G^$T{  
import org.rut.util.algorithm.SortUtil; BC1smSlJ  
;4/ n~  
/** k+je-%hPj  
* @author treeroot .Zs.O/  
* @since 2006-2-2 iS"6)#a72  
* @version 1.0 DZb0'+jQ  
*/ aM,g@'.=  
public class BubbleSort implements SortUtil.Sort{ 2~r2ErtS  
6Rq +=X  
/* (non-Javadoc) e},:QL0X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xt`a":lru  
*/ nKtRJ,>  
public void sort(int[] data) {  :fy,%su  
int temp; =T?Xph{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i??+5o@uTF  
if(data[j] SortUtil.swap(data,j,j-1); HxL uJ  
} O<Ay`p5  
} ! /|B4Yv  
} |q\i, }  
} cSG(kFQ  
> #9 a&O  
} dpt P(H  
ZGCp[2$  
选择排序: oq1wU@n  
/; 21?o  
package org.rut.util.algorithm.support; &f?JtpB  
EKsOj&ZiJ  
import org.rut.util.algorithm.SortUtil; HAs/f#zAk6  
1L\r:mx3  
/** Py+ B 2G|  
* @author treeroot q$}J/w(,  
* @since 2006-2-2 u3 &# UN  
* @version 1.0 =_Z.x&fi  
*/ t 0p  
public class SelectionSort implements SortUtil.Sort { QAY:H@Gt:  
r4K%dx-t  
/* HyYJ"54  
* (non-Javadoc) ,5 3`t  
* j0 Os]a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]lE5^<<  
*/ aSHN*tP%y  
public void sort(int[] data) { uz=9L<$  
int temp; HoWK# Nz\  
for (int i = 0; i < data.length; i++) { 6ZjY-)h  
int lowIndex = i; I,& gKgh  
for (int j = data.length - 1; j > i; j--) { Jiru~Vo+  
if (data[j] < data[lowIndex]) { 5,|{|/  
lowIndex = j; H,j_2JOY=  
} ]f wW dtz1  
} 8/u kzY1!  
SortUtil.swap(data,i,lowIndex); KR hls"\1  
} 2t{Tz}g*  
} XZ8]se"C  
6KN6SN$  
} zd F;!  
e-lc2$o7{  
Shell排序: !I91kJt7  
0YoV`D,U  
package org.rut.util.algorithm.support; |^F$Ta  
u'Hh||La"  
import org.rut.util.algorithm.SortUtil; F)/4#[  
N1vA>(2A  
/** < 5ULu(b&$  
* @author treeroot 7v.O Lp  
* @since 2006-2-2 evVxzU&  
* @version 1.0 ~Q]::  
*/ 9c{ ~$zJW  
public class ShellSort implements SortUtil.Sort{ a^O>i#i  
^ b=;  
/* (non-Javadoc) yRQNmR;Uy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #}tdA( -  
*/ X1V~.k vt)  
public void sort(int[] data) { hOdU%  
for(int i=data.length/2;i>2;i/=2){ a785xSUV  
for(int j=0;j insertSort(data,j,i); Wm)Id_  
} !l6ht {  
} Un5 AStG  
insertSort(data,0,1); @bnw$U`+  
} &{q'$oF  
6IJ;od.\b$  
/** r.=.,R  
* @param data eOZ~p  
* @param j 8N<m V^|}  
* @param i $!\L6;:  
*/ .I^Y[_.G  
private void insertSort(int[] data, int start, int inc) { -Wre4 ^,v  
int temp; KWi|7z(L=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %S>6Q^B  
} 'Ir   
} (4rHy*6  
} KyqP@ {  
AF{@lDa1h  
} 6hXh;-U  
"tA.`*  
快速排序: w2r* $Q  
_C'VC#Sy  
package org.rut.util.algorithm.support; v Et+^3=  
r& :v(  
import org.rut.util.algorithm.SortUtil; yK_$d0ZGE~  
#N y+6XM  
/** 2mO9  
* @author treeroot " #U-*Z7  
* @since 2006-2-2 'P%&*%  
* @version 1.0 wx2 z9Q  
*/ byZj7q5&Q  
public class QuickSort implements SortUtil.Sort{ X|R"8cJ  
GW.Y= S  
/* (non-Javadoc) ]RF(0;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )}i2x:\|_  
*/ =">0\#  
public void sort(int[] data) { lr -+|>M)  
quickSort(data,0,data.length-1); 2 B_+5  
} }me`(zp  
private void quickSort(int[] data,int i,int j){ `bd9N !K  
int pivotIndex=(i+j)/2; PevT`\>  
file://swap VZ9`Kbu  
SortUtil.swap(data,pivotIndex,j); vsYbR3O  
_m%Ab3iT~  
int k=partition(data,i-1,j,data[j]); A\.{(,;kp  
SortUtil.swap(data,k,j); x Y}.mP  
if((k-i)>1) quickSort(data,i,k-1); gN<J0c)  
if((j-k)>1) quickSort(data,k+1,j); ZiaFByLy  
,z+n@sUR:  
} )E6E}  
/** ^Q!A4 qOQ  
* @param data H8Z|gq1r  
* @param i &nY#G HB  
* @param j O}6*9Xy  
* @return oS_YQOoD  
*/ @?t+O'&  
private int partition(int[] data, int l, int r,int pivot) { &.Yu%=}  
do{ #X?E#^6?E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~ D/1U)kt  
SortUtil.swap(data,l,r); v <| iN#  
} 1Z_ H% (  
while(l SortUtil.swap(data,l,r); fvA167\  
return l; pE.TG4  
} W!* P  
;9vY5CxzC  
} #aKUD  
JPg^h  
改进后的快速排序: \e%%ik,<  
nKjT&R  
package org.rut.util.algorithm.support; wiM4,  
&uf|Le4  
import org.rut.util.algorithm.SortUtil; x5M+\?I<2  
Hig.` P  
/** W/%9=g$m  
* @author treeroot )k4&S{=  
* @since 2006-2-2 ~!/agLwY  
* @version 1.0  ?H8dyQ5"  
*/ Z07n>|WF-  
public class ImprovedQuickSort implements SortUtil.Sort { LvL2[xh%&  
(:}}p}u  
private static int MAX_STACK_SIZE=4096; X0LC:0+  
private static int THRESHOLD=10; 5BM6Pnle  
/* (non-Javadoc) q3GkfgY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J{n A ?[  
*/ )6px5Vwz  
public void sort(int[] data) { !d95gq<=>  
int[] stack=new int[MAX_STACK_SIZE]; \|Y_,fi  
nu[["f~  
int top=-1; g5*?2D}dqX  
int pivot; w)/~Gn676  
int pivotIndex,l,r; aT BFF  
NA#,q 8  
stack[++top]=0; ZRFHs>0  
stack[++top]=data.length-1; :fnK`RnaQ  
6 8Vxy  
while(top>0){ *mW2vJ/B  
int j=stack[top--]; vxrqUjK7  
int i=stack[top--]; 0sF|Y%N  
LQ||7>{eX  
pivotIndex=(i+j)/2; gYmO4/c,  
pivot=data[pivotIndex]; [?2,(X0yh1  
KfQR(e9n   
SortUtil.swap(data,pivotIndex,j); $JiypX^DOP  
]y"=/Nu-Ja  
file://partition .P ??N  
l=i-1; ,!P}Y[|  
r=j; bb-u'"5^]  
do{ }gd'pgN"t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z,8t!Y  
SortUtil.swap(data,l,r); ylQ9Su>o  
} A}_pJH  
while(l SortUtil.swap(data,l,r); wv Mp~  
SortUtil.swap(data,l,j); +HG*T[%/  
3L{)Y`P  
if((l-i)>THRESHOLD){ lA4TWU (]  
stack[++top]=i; n`T4P$pt  
stack[++top]=l-1; @\a~5CLN  
} U+!&~C^y  
if((j-l)>THRESHOLD){  nL[G@1nR  
stack[++top]=l+1; S[N9/2  
stack[++top]=j; ff00s+  
} +R;s< pZ^  
_SU6Bd/>  
} y43ha  
file://new InsertSort().sort(data); v <OZ # L$  
insertSort(data); a`LkP%  
} D?4bp'0 3  
/** A,3qjd,$ c  
* @param data {$ v^2K'C  
*/ L<6nM ;d  
private void insertSort(int[] data) { F&    
int temp; aP B4!3W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )c532 y  
} J5Ti@(G5V  
} zU_ dk'&,  
} %OP|%^2  
Fqh./@o  
} M0`1o p1  
p 8Z;QH*  
归并排序: Sf@xP.d  
dqO]2d  
package org.rut.util.algorithm.support; dXsD%sG @  
OU!."r`9  
import org.rut.util.algorithm.SortUtil; (^E5y,H<g  
G#A6<e/  
/** 3{wuifS  
* @author treeroot 6{yn;D4  
* @since 2006-2-2 _'*(-K5&  
* @version 1.0 r`< x@,  
*/ po.QM/b \  
public class MergeSort implements SortUtil.Sort{ D]N)  
7U2B=]<e-  
/* (non-Javadoc) |I{3~+E h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {CNJlr@z  
*/ 8~ &=vc  
public void sort(int[] data) { 6?[SlPPE1  
int[] temp=new int[data.length]; >7~,w1t  
mergeSort(data,temp,0,data.length-1); ngI+afo   
} 1qBE|PwBp  
'pB?  
private void mergeSort(int[] data,int[] temp,int l,int r){ k;)mc+ ~+  
int mid=(l+r)/2; w^,Xa  
if(l==r) return ; Mc$rsqDz  
mergeSort(data,temp,l,mid); E[4 vUnm-  
mergeSort(data,temp,mid+1,r); *B9xL[}  
for(int i=l;i<=r;i++){ GK[9IF#_>  
temp=data; }>V=J aG  
} w\{#nrhYU  
int i1=l; Ex skd}  
int i2=mid+1; .L]5,#2([  
for(int cur=l;cur<=r;cur++){ 9<3fH J?vq  
if(i1==mid+1) #zBqj;p  
data[cur]=temp[i2++]; u7j,Vc'~  
else if(i2>r) -= izu]Fb,  
data[cur]=temp[i1++]; $1Zr.ERL|(  
else if(temp[i1] data[cur]=temp[i1++]; 5fYWuc9}z  
else }w-M .  
data[cur]=temp[i2++]; R~fk/T?  
} #&1gVkvp  
} B]6Lbp"oo  
*xY3F8  
} xvomn`X1  
1kR. .p<"  
改进后的归并排序: IM5[O}aq  
g:GywX W  
package org.rut.util.algorithm.support; gQJLqs"F  
bbDm6,  
import org.rut.util.algorithm.SortUtil; oK$Krrs0&  
XODp[+xEEt  
/** C ,|9VH  
* @author treeroot z4$9,p `  
* @since 2006-2-2 w.#z>4#3-  
* @version 1.0 *'\HG  
*/ 4:pgZz!  
public class ImprovedMergeSort implements SortUtil.Sort { Dsb Tx.vA  
F^S]7{  
private static final int THRESHOLD = 10; 69apTx  
ck3+A/ !z  
/* (U 4n} J  
* (non-Javadoc) "S*@._   
* "fUNrhCx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xq=!1>  
*/ .yFO] r1aL  
public void sort(int[] data) { KWAd~8,mk  
int[] temp=new int[data.length]; }[h]z7e2S  
mergeSort(data,temp,0,data.length-1); Z:es7<#y  
} XXA]ukj;r  
bf {_U%`  
private void mergeSort(int[] data, int[] temp, int l, int r) { b;#_?2c  
int i, j, k; c\&;Xr  
int mid = (l + r) / 2; rK`^A  
if (l == r) *<6dB#' J  
return; 0C  K  
if ((mid - l) >= THRESHOLD) y6x./1Nb}<  
mergeSort(data, temp, l, mid); FK94CI  
else `!(%R k  
insertSort(data, l, mid - l + 1); aw~h03R_Z  
if ((r - mid) > THRESHOLD) *::.Uo4O  
mergeSort(data, temp, mid + 1, r); \okv}x^L=Z  
else a|.IAxJ  
insertSort(data, mid + 1, r - mid); Q"GM3?  
F`2h,i-9  
for (i = l; i <= mid; i++) { X%kJ3{  
temp = data; sUK|*y  
} |]k,0Y3v  
for (j = 1; j <= r - mid; j++) { CDsl)  
temp[r - j + 1] = data[j + mid]; %e3E}m>  
} V0W4M%  
int a = temp[l]; V\opC6*L_e  
int b = temp[r]; DS>&|zF5l  
for (i = l, j = r, k = l; k <= r; k++) { 9!Jt}n?!g  
if (a < b) { PHY!yc-LjV  
data[k] = temp[i++]; 4;r,U{uR  
a = temp; %<[{zd1C-  
} else { ~(huUW  
data[k] = temp[j--]; lSO$Q]!9  
b = temp[j]; ' i<4;=M&  
} Un,'a8>V`  
} udIm}jRA"  
} MX7Ix{  
\Q1&w2mw  
/** q9{)nU  
* @param data =5V7212  
* @param l MI^$df  
* @param i "PO8Q  
*/ j(]O$""  
private void insertSort(int[] data, int start, int len) { `wU['{=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1#Hr{&2  
} x?0K'  
} l^B4.1rT  
} )pT5"{  
} F]r'j ZL  
@TX@78fWz=  
堆排序: )*{B_[  
Sy4|JM-5  
package org.rut.util.algorithm.support; U1pE2o-  
p@uHzu7  
import org.rut.util.algorithm.SortUtil; b4bd^nrqV  
?Tu=-ppw  
/** =T&<z_L  
* @author treeroot e84%Y8,0  
* @since 2006-2-2 0GeL">v,:=  
* @version 1.0 \AA9 m'BZ  
*/ A#19&}  
public class HeapSort implements SortUtil.Sort{ Dm8fcD  
XMT@<'fI  
/* (non-Javadoc) y 5=r r3%v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RWo7_XO  
*/ wvxz:~M  
public void sort(int[] data) { 9p3~WA/M@  
MaxHeap h=new MaxHeap(); g1"Z pD  
h.init(data); zwJ&K;"y(  
for(int i=0;i h.remove(); ;' vkF  
System.arraycopy(h.queue,1,data,0,data.length); 2nCc(F&+?  
} XM*5I 4V  
vM5/KrW  
private static class MaxHeap{ % XZ&(  
/IJy'@B  
void init(int[] data){ 0)~c)B:5  
this.queue=new int[data.length+1]; !K}W.yv,  
for(int i=0;i queue[++size]=data; knph549  
fixUp(size); N[Ei%I  
} US"g>WLwJ  
} JS%LJ _J  
w5~j|c=_W  
private int size=0; B@i%B+qCLv  
"-dA\,G  
private int[] queue; q>>1?hzA  
~yw]<{?  
public int get() { ~LV]cX2J(  
return queue[1]; >dm9 YfQ  
} ryh"/lu[B  
oVn&L*H   
public void remove() { eA-oqolY  
SortUtil.swap(queue,1,size--); nK?S2/o#A  
fixDown(1); oQu>Qr{Zp  
} |Rkw/5  
file://fixdown K/f-9hE F  
private void fixDown(int k) { 7(h@5  
int j; YW/V}C'>  
while ((j = k << 1) <= size) { U4K ZPk  
if (j < size %26amp;%26amp; queue[j] j++; RtHai[j  
if (queue[k]>queue[j]) file://不用交换 "0#(<zb|  
break; !bYVLFp=\_  
SortUtil.swap(queue,j,k); Ry]9n.y  
k = j; QSa#}vCp*  
} R2-F@_  
} 3 e1-w$z&S  
private void fixUp(int k) { {j]cL !Od  
while (k > 1) { 43M.Hj]  
int j = k >> 1; @P75f5p}<  
if (queue[j]>queue[k])  HB'9&  
break; I#O"<0 *r  
SortUtil.swap(queue,j,k); a~_JTH4=t  
k = j; ]YFjz/f  
} .IdbaH _a  
}  4W*o:Y!  
K$/"I0YyI  
} Fb%?qaLmCv  
K|-m6!C!7  
} GP hhg  
p!^K.P1 '  
SortUtil: 8zj&e8&v  
5 D^#6h 4  
package org.rut.util.algorithm; nYZ6'Iwi'  
Y)5O %@Rl  
import org.rut.util.algorithm.support.BubbleSort; la-:"gKC  
import org.rut.util.algorithm.support.HeapSort; *!&?Xy%\"j  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,pGA|ob  
import org.rut.util.algorithm.support.ImprovedQuickSort; tJ>>cFx  
import org.rut.util.algorithm.support.InsertSort; !o_eK\p  
import org.rut.util.algorithm.support.MergeSort; vn$=be8l4  
import org.rut.util.algorithm.support.QuickSort; W$NFk(  
import org.rut.util.algorithm.support.SelectionSort; Aixe?A_x  
import org.rut.util.algorithm.support.ShellSort; 6?<lS.s  
Y!_c/!Tx  
/** O$m &!J  
* @author treeroot i({\fb|0  
* @since 2006-2-2 !'F1Ht  
* @version 1.0 YF-E1`+?<  
*/ a@W9\b@I  
public class SortUtil { \ Voly  
public final static int INSERT = 1; 0q-lyVZ^X  
public final static int BUBBLE = 2; 7>O`UT<t4@  
public final static int SELECTION = 3; 8uLS7\,$z  
public final static int SHELL = 4; }kvix{  
public final static int QUICK = 5; $ [fqTh  
public final static int IMPROVED_QUICK = 6; l$9k:#\FD  
public final static int MERGE = 7; !0Nf`iCQ(  
public final static int IMPROVED_MERGE = 8; i) X~L4gn  
public final static int HEAP = 9; nf"#F@dk  
+<[q"3  
public static void sort(int[] data) { uE9,N$\L_  
sort(data, IMPROVED_QUICK); 7R:Ij[dV  
} a<r,LE  
private static String[] name={ ROQ]sQpk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a_5s'Dh  
}; {O y|c  
"%^_.Db>|  
private static Sort[] impl=new Sort[]{ [[AO6.Z  
new InsertSort(), B47I?~{  
new BubbleSort(), #vyf*jPr  
new SelectionSort(), cw 2!V@  
new ShellSort(), 54>0Dv??H  
new QuickSort(), H OWpTu(  
new ImprovedQuickSort(), Fovah4q%V  
new MergeSort(), bs)wxU`Q*  
new ImprovedMergeSort(), !fn%Q'S  
new HeapSort() s a o&  
}; T{+a48,;  
|LQ%sV  
public static String toString(int algorithm){ Z@Q*An  
return name[algorithm-1]; LS<+V+o2%  
} k"DZ"JC  
CA`V)XIsP  
public static void sort(int[] data, int algorithm) { }O@>:?U  
impl[algorithm-1].sort(data); GyQFR?  
} &>+T*-'  
Q?>r:vMi  
public static interface Sort { e3CFW_p  
public void sort(int[] data); ky[Cx!81C  
} 0:[A4S`X  
L QV@]z&  
public static void swap(int[] data, int i, int j) { #1'q'f:7 &  
int temp = data; (b#M4ho*f  
data = data[j]; Bj \ x  
data[j] = temp; K a(B&.  
} '{ =F/q  
} P`Ku. ONQ  
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