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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。 xlcL;e&^P  
插入排序: ;\g0* b(  
8IkmFXj  
package org.rut.util.algorithm.support; jd`h)4  
S=<OS2W7+r  
import org.rut.util.algorithm.SortUtil; EVlj#~mV  
/** AqiH1LAE  
* @author treeroot $GR rTC!  
* @since 2006-2-2 9?iA~r|+  
* @version 1.0 5szJ.!(  
*/ \ )WS^KR%  
public class InsertSort implements SortUtil.Sort{ $35C1"  
)b?$ 4<X^  
/* (non-Javadoc) uv=a}U;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Up~ "q>Kb  
*/ b4qMTRnv  
public void sort(int[] data) { YP Qix  
int temp; a]/KJn /B(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1}_4C0h\'  
} W) Ct*I^  
} UgL FU#  
} A.vf)hO  
 PI.Zd1r  
} QWc,JCu  
xa'^:H $X  
冒泡排序: *Z$W"JP  
yJ/YK  
package org.rut.util.algorithm.support; |}?H$d  
 + \]-"  
import org.rut.util.algorithm.SortUtil; sW-0G$,|  
<Umr2Vw-  
/** K491QXG  
* @author treeroot XV}}A ^  
* @since 2006-2-2 5sANF9o!  
* @version 1.0 9W0*|!tQ,+  
*/ x2sKj"2?@  
public class BubbleSort implements SortUtil.Sort{ 0xx4rp H  
<+-=j  
/* (non-Javadoc) n2 can  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q9wObOS$  
*/ *c\XQy  
public void sort(int[] data) { boI&q>-6Re  
int temp; DaQ+XUH?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jGi{:}`lB  
if(data[j] SortUtil.swap(data,j,j-1); 0l3[?YtXc  
} $4mCtonP=  
} Xj{gyLs  
} 1eywnOjrj  
} ]>Ym   
"IB36/9  
} LZb<-vK"y  
Z($i+L%.  
选择排序: {P_i5V?  
\%&A? D  
package org.rut.util.algorithm.support; 0 *;i]owV  
{cUGksz]}  
import org.rut.util.algorithm.SortUtil; oI!"F=?&6  
x`c 7*q%  
/** 1tq ^W'  
* @author treeroot eR,/} g\  
* @since 2006-2-2 dl"=ZI '^  
* @version 1.0 0hhxTOp  
*/ Rc:}%a%e  
public class SelectionSort implements SortUtil.Sort { >|z:CX$]  
tz8 fZ*n  
/* 8k3y"239t  
* (non-Javadoc) Wsgp#W+  
* qw$9i.Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <S=( `D  
*/ MhR`  
public void sort(int[] data) { RcO"k3J  
int temp; I(Qz%/Ox  
for (int i = 0; i < data.length; i++) { ^.R!sQ  
int lowIndex = i; eKy!Pai  
for (int j = data.length - 1; j > i; j--) { w\MWr+4  
if (data[j] < data[lowIndex]) { 4/%fpU2  
lowIndex = j; h=S7Z:IaM  
} W+GC3W   
} Ka6u*:/  
SortUtil.swap(data,i,lowIndex); z"T+J?V/  
} Pro?xY$E)  
} ht*(@MCr<  
J;NIa[a  
}  =   
IA<>+NS  
Shell排序: vQ* RrHG?c  
`kJ)E;v;3  
package org.rut.util.algorithm.support; :'B(DzUR  
1I`F?MT  
import org.rut.util.algorithm.SortUtil; aoZ| @x  
5q*s_acQ  
/** &ocuZ -5`  
* @author treeroot JRi:MWR<r  
* @since 2006-2-2 Pc*lHoVL  
* @version 1.0 S't9F  
*/ .hu7JM+  
public class ShellSort implements SortUtil.Sort{ 9DJ&J{2W  
zt: !hM/Vt  
/* (non-Javadoc) ZT@=d$Z&t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?IYu"UO<)|  
*/ zzhZ1;\  
public void sort(int[] data) { G"` }"T0}  
for(int i=data.length/2;i>2;i/=2){ -Uy)=]Zae  
for(int j=0;j insertSort(data,j,i); R;!@ xy  
} \H bZ~I-  
} U+qyS|i  
insertSort(data,0,1);  {ibu 0  
} vRH^en  
'KIT^k0"Ih  
/** C{}PO u  
* @param data bJetqF6 n  
* @param j Mib .,J~  
* @param i eM_;rMCr}  
*/ [:.wCG5  
private void insertSort(int[] data, int start, int inc) { |,p"<a!+{w  
int temp; WM`3QJb  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); COsmVQ.  
} {h|<qfH  
} },j |eA/W  
} 9c[X[ Qc  
W,NqevXo:  
} `X5!s  
>U,&V%y  
快速排序: ttUK~%wSx  
t*9 gusmG  
package org.rut.util.algorithm.support; I)V=$r{  
g%l ,a3"  
import org.rut.util.algorithm.SortUtil; 'o6}g p)  
",3v%$ >  
/** I{OizBom  
* @author treeroot beBG40  
* @since 2006-2-2 aaig1#a@1b  
* @version 1.0 u0Wt"d-=  
*/ g}v](Q  
public class QuickSort implements SortUtil.Sort{ l<w7 \a6  
o[cOL^Xd1  
/* (non-Javadoc) La )M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KR#,6  
*/ ":$4/b6  
public void sort(int[] data) { s-#EV  
quickSort(data,0,data.length-1); c 9f"5~  
} r@3-vLI!u  
private void quickSort(int[] data,int i,int j){ U}5fjY  
int pivotIndex=(i+j)/2; =}#yi<Lt  
file://swap 3~T ~Bs  
SortUtil.swap(data,pivotIndex,j); p /-du^:2  
#zTy7ZS,0  
int k=partition(data,i-1,j,data[j]); a*y9@RC}  
SortUtil.swap(data,k,j); a~7D4G  
if((k-i)>1) quickSort(data,i,k-1); U;#KFZ+~  
if((j-k)>1) quickSort(data,k+1,j); &Gjpc>d  
?{qUn8f2  
} g %mCg P  
/** )]j3-#  
* @param data (DO'iCxlNh  
* @param i UsyNn39  
* @param j Ob/)f)!!  
* @return q13fmK(n-5  
*/ -*' ?D@l  
private int partition(int[] data, int l, int r,int pivot) { 4>=M"D hB  
do{ _ l|%~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~D9Cu>d9  
SortUtil.swap(data,l,r); &^"Ru?MK  
} @v%Kwe1Q  
while(l SortUtil.swap(data,l,r); YbU8 xq  
return l;  9!jPZn  
} Mwnr4$]  
0~fjY^(  
} 4C=W~6~  
6^gp /{  
改进后的快速排序: #"4ioTL2  
-5b|nQuY  
package org.rut.util.algorithm.support; =@Oo3*>  
D6Ad "|Z  
import org.rut.util.algorithm.SortUtil; )k=KLQ\b  
:')[pO_FW*  
/** ]gq)%T]  
* @author treeroot  Lto*L X  
* @since 2006-2-2 &#2&V>pE  
* @version 1.0 fB3Jp~$  
*/ X%'z  
public class ImprovedQuickSort implements SortUtil.Sort { "@&TC"YG0  
W^[FWFUTY  
private static int MAX_STACK_SIZE=4096; Y/5M)AyJt  
private static int THRESHOLD=10; 6Cj7 =|L7  
/* (non-Javadoc) 2'?'dfj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 23):OB>S`  
*/ !G3AD3  
public void sort(int[] data) { gsyOf*Q$  
int[] stack=new int[MAX_STACK_SIZE]; s$Y>nH~T  
gTho:;q7a  
int top=-1; :ZXd%  
int pivot; zvV&Hks-  
int pivotIndex,l,r; {nV/_o$$  
49; 'K  
stack[++top]=0; 1Z}5ykM3  
stack[++top]=data.length-1; .nD#:86M  
#-;c!<2  
while(top>0){ BTkx}KK  
int j=stack[top--]; \P.h;|u  
int i=stack[top--]; G]=z ![$  
_Q5mPBO  
pivotIndex=(i+j)/2; 1(o\GI3:  
pivot=data[pivotIndex]; LDjtkD.r  
zl1*GVg  
SortUtil.swap(data,pivotIndex,j); Xfc$M(a K{  
0)WAQt\/  
file://partition _= v4Iz0  
l=i-1; R])Eg&  
r=j; AT"gRCU$4  
do{ a!$kKOK  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >B{NxL3->  
SortUtil.swap(data,l,r); ~*Y#Y{  
} FW|& iS$  
while(l SortUtil.swap(data,l,r); u(f   
SortUtil.swap(data,l,j); jA{5)-g  
dQj/ Sr  
if((l-i)>THRESHOLD){ i5}Zk r  
stack[++top]=i; DO: ,PZX  
stack[++top]=l-1; J9mK9{#q  
} <T_3s\  
if((j-l)>THRESHOLD){ bTD?uX!^@  
stack[++top]=l+1; cT'Bp)a  
stack[++top]=j; XGSFG ~d  
} ^ j\LB23  
}emUpju<C  
} 7_\sx7h{3  
file://new InsertSort().sort(data); Yj&Sb  
insertSort(data); e"04jd/  
} 9[.HWe,  
/** { ptd OrN  
* @param data 1b9S";ct0  
*/ ^+m`mcsE  
private void insertSort(int[] data) { LE8<JMB  
int temp; *kLFs|U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /L^g. ~  
} b&rBWp0#  
} ps{4_V-3u  
} K}l3t2uk  
]pR?/3  
} arL>{mj  
7H3v[ f^Q  
归并排序: ]M5~p^ RB  
}n9(|i+  
package org.rut.util.algorithm.support; N!K%aH~O  
T)mQ+&|  
import org.rut.util.algorithm.SortUtil; g"P%sA/E+  
o'DtW#F  
/** v+nXKNL  
* @author treeroot H~j@n!)  
* @since 2006-2-2 jSem/;  
* @version 1.0 Av.tr&ZNb  
*/ Y7t#)?  
public class MergeSort implements SortUtil.Sort{ A 6S0dX  
dtR"5TL<~}  
/* (non-Javadoc) ['mpxtG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k)b{ UFRW  
*/ 7h 54j  
public void sort(int[] data) { W[&nQW$E  
int[] temp=new int[data.length]; <&E}db  
mergeSort(data,temp,0,data.length-1); =2p?_.|'  
} (kxS0 ]=  
o,rF15  
private void mergeSort(int[] data,int[] temp,int l,int r){ KR?;7*qF  
int mid=(l+r)/2; !PA:#]J  
if(l==r) return ; 6F (z6_<  
mergeSort(data,temp,l,mid); 0>|q[SC  
mergeSort(data,temp,mid+1,r); ^EUR#~b5iy  
for(int i=l;i<=r;i++){ MLdwf}[  
temp=data; y[ dB mTY  
} Orq/38:4G  
int i1=l; u n v:sV#b  
int i2=mid+1; JG!B3^qB  
for(int cur=l;cur<=r;cur++){ >+%#m'Y&&  
if(i1==mid+1) 5eTA]  
data[cur]=temp[i2++]; &ivU4rEG  
else if(i2>r) Ub3$`  
data[cur]=temp[i1++]; QEJu.o  
else if(temp[i1] data[cur]=temp[i1++]; oZ%uq78#[%  
else &hWELZe0vv  
data[cur]=temp[i2++]; b-& rMML  
} iE'_x$i  
} lju5+0BSb  
2y!n c%  
} ?IGp?R^j"  
6Ryc&z5  
改进后的归并排序: 84(Jo_9  
5=TgOS]R  
package org.rut.util.algorithm.support; +p\E%<uQ  
@D9O<x  
import org.rut.util.algorithm.SortUtil; zB%~=@Q^6  
0!\gK <,z  
/** Exw d,2>  
* @author treeroot Q,NnB{R  
* @since 2006-2-2 \Tz|COG5h\  
* @version 1.0 XC3)#D#HGh  
*/ o9xc$hX}  
public class ImprovedMergeSort implements SortUtil.Sort { *ra)u-  
]t 0o%w  
private static final int THRESHOLD = 10; 5Dkb/Iagi  
s@L ;3WdO  
/* )q<VZ|V  
* (non-Javadoc) k4s V6f  
* ^2'Y=g>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y][12{I{  
*/ LW<Lg N"L-  
public void sort(int[] data) { V6merT79  
int[] temp=new int[data.length]; ci;2XLAM  
mergeSort(data,temp,0,data.length-1); mP^B2"|q  
} #eJfwc1JY  
I "x'  
private void mergeSort(int[] data, int[] temp, int l, int r) { Vg$d|m${  
int i, j, k; F+*E}QpM  
int mid = (l + r) / 2; 6[t<g=  
if (l == r) ~ikp'5  
return; ?6 2zv[#  
if ((mid - l) >= THRESHOLD) hrniZ^  
mergeSort(data, temp, l, mid); [+WsVwyf?  
else mu B Y  
insertSort(data, l, mid - l + 1); XoyxS:=>|[  
if ((r - mid) > THRESHOLD) :cA P{rSe  
mergeSort(data, temp, mid + 1, r); C@-Hm  
else 8>x5|  
insertSort(data, mid + 1, r - mid); [],[LkS  
EeYL~ORdi  
for (i = l; i <= mid; i++) { CAc]SxLh  
temp = data; AON |b\?  
} ~?NCmU=3  
for (j = 1; j <= r - mid; j++) { 8ve-g\C8 H  
temp[r - j + 1] = data[j + mid]; v o:KL%)  
} >"/TiQt  
int a = temp[l]; ewcFzlA@  
int b = temp[r]; !hHe`  
for (i = l, j = r, k = l; k <= r; k++) { ^6Aa^|  
if (a < b) { 8g=O0Gb  
data[k] = temp[i++]; S*Ea" vBA  
a = temp; 2[Bbdg[O  
} else { ,i*rHMe  
data[k] = temp[j--]; `)O9 '568  
b = temp[j]; Ls2OnL9  
} @6ckB (  
} )nHMXZ>Td  
} M Q =x:p{  
Z&^vEQ  
/** \B')2phE  
* @param data 3JD62wtx  
* @param l ;*5z&1O  
* @param i bAt!S  
*/ ta&z lZt  
private void insertSort(int[] data, int start, int len) { iB0r+IbR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U,b80%k:  
} MO ~T_6  
} Cnpl0rV~5  
} {ZUk!o>m@  
} +Vg(2Xt  
bN?*p($/  
堆排序: L@MCB-@V  
,8*A#cT B  
package org.rut.util.algorithm.support; <w&'E6mU  
0084`&Ki  
import org.rut.util.algorithm.SortUtil; B)/&xQu  
EW]DzL 3  
/** >0kL9_9{  
* @author treeroot <2*+Y|Lk2  
* @since 2006-2-2 23LG)or.JC  
* @version 1.0 ]>)}xfL &,  
*/ u9;3Xn8  
public class HeapSort implements SortUtil.Sort{ e|A=sCN-  
%w_MRC  
/* (non-Javadoc) !T`g\za/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8k{XUn  
*/ bIT[\Q  
public void sort(int[] data) { SMvlEj^  
MaxHeap h=new MaxHeap(); 5@.8O VPz  
h.init(data); KUW )F  
for(int i=0;i h.remove(); <> =(BAw  
System.arraycopy(h.queue,1,data,0,data.length); 9on$0  
} >o"s1* {  
xD7Y"%Pbx  
private static class MaxHeap{ >a@1y8B  
uYTyR;a  
void init(int[] data){ =2Ju)!%wr  
this.queue=new int[data.length+1]; -X EK[  
for(int i=0;i queue[++size]=data; ;Qd'G7+  
fixUp(size); H"+|n2E^  
} H|s Iw:  
} W*H%\Y:N  
6jr}l  
private int size=0; O0^Y1l  
1|*%  
private int[] queue;  t":^:i'M  
[9EL[}  
public int get() { #)D$\0ag  
return queue[1]; $LR~c)}1I  
} un6W|{4]  
4xx?x/q  
public void remove() { 6wiuNGZb  
SortUtil.swap(queue,1,size--); M9V,;*  
fixDown(1); 3rh t5n2-  
} ,vi6<C\  
file://fixdown (4l M3clF  
private void fixDown(int k) { 9Lt3^MKa"  
int j; YbVZK4  
while ((j = k << 1) <= size) {  mznE Cy  
if (j < size %26amp;%26amp; queue[j] j++; q+YK NXI  
if (queue[k]>queue[j]) file://不用交换 <y-2ovw*  
break; cCtd\/ \  
SortUtil.swap(queue,j,k);  qzD  
k = j; K(mzt[n(  
} C/"Wh=h6  
} k:s86q  
private void fixUp(int k) { -% B)+yq>  
while (k > 1) { k<*1mS8  
int j = k >> 1; ,J*#Ixe}  
if (queue[j]>queue[k]) a;7gy419<p  
break; #z}IW(u<  
SortUtil.swap(queue,j,k); c_?!V  
k = j; S r7EcT-  
} (>D{"}  
} IOUzj{G#  
K!jau|FS  
} +/*A}!#v  
w RTzpG4  
} NLWj5K)1P  
RV5;EM)~[  
SortUtil: P>6wr\9i[  
> m9ge`!9  
package org.rut.util.algorithm; 6mrfkYK  
)N ^g0 L  
import org.rut.util.algorithm.support.BubbleSort; {7Ez7'SVV  
import org.rut.util.algorithm.support.HeapSort; ctC! b{S"@  
import org.rut.util.algorithm.support.ImprovedMergeSort; kZ_5R#xK  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~o ;*{ Q  
import org.rut.util.algorithm.support.InsertSort; jK=-L#hz  
import org.rut.util.algorithm.support.MergeSort; d~d~Cd`V  
import org.rut.util.algorithm.support.QuickSort; ]s_BOt  
import org.rut.util.algorithm.support.SelectionSort; Cvs4dd%)i  
import org.rut.util.algorithm.support.ShellSort; ;S>ml   
f#vVk  
/** wmv/ ?g  
* @author treeroot Vzrp9&loY  
* @since 2006-2-2 vn5]+-I  
* @version 1.0 ! F&{I  
*/ d 7QWK(d  
public class SortUtil { n;dp%SD  
public final static int INSERT = 1; FJ&?My,=J  
public final static int BUBBLE = 2; .!Q[kn0a  
public final static int SELECTION = 3; \h/aD1 &g  
public final static int SHELL = 4; l< |)LD q~  
public final static int QUICK = 5; r+l3J>:K  
public final static int IMPROVED_QUICK = 6; !U+XIr  
public final static int MERGE = 7; {,m W7  
public final static int IMPROVED_MERGE = 8; l3/?,xn  
public final static int HEAP = 9; 9s6d+HhM  
c/}bx52>u  
public static void sort(int[] data) { *}i.,4+y   
sort(data, IMPROVED_QUICK);  F_%&,"$  
} FU~:9EEx  
private static String[] name={ G0h7MO%x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bl B00   
}; 4[]4KKO3Q2  
@xtfm.}  
private static Sort[] impl=new Sort[]{ au1(.(  
new InsertSort(), C@ z^{Z+  
new BubbleSort(), \xaK?_hv  
new SelectionSort(), g*#.yC1/  
new ShellSort(), g TP0:  
new QuickSort(), Hq$?-%4  
new ImprovedQuickSort(), Co>=<\yi  
new MergeSort(), U,u\o@3A  
new ImprovedMergeSort(), '.DFyHsq  
new HeapSort() ~lLIq!!\  
}; ugt|'i  
G_x<2E"d  
public static String toString(int algorithm){ nz]+G2 h  
return name[algorithm-1]; 6ax|EMw  
} djcC m5m  
1vBXO bk  
public static void sort(int[] data, int algorithm) { pEE.%U  
impl[algorithm-1].sort(data); /e}NZo{)g  
} p[%FH?  
[& &9F};  
public static interface Sort { P\CT|K'P  
public void sort(int[] data); R oWGQney  
} pTJJ.#$CEF  
h{cJ S9e}  
public static void swap(int[] data, int i, int j) { vJfex,#lv  
int temp = data; t1YVE%`w  
data = data[j]; * 7 o(  
data[j] = temp; t/aT  
} Bq]eNq  
} x, ^j=n  
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