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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。 >w)A~ F<  
插入排序: L__J(6,V2  
Yb=Z `)  
package org.rut.util.algorithm.support; .jvRUD8A7  
r E<Ou"  
import org.rut.util.algorithm.SortUtil; Ub| -Q  
/** :9f/d;Mo3  
* @author treeroot ?*: mR|=  
* @since 2006-2-2 eO?@K$I  
* @version 1.0 - A)XYz  
*/ ^rIe"Kx  
public class InsertSort implements SortUtil.Sort{ x>*#cOVz;C  
M;zJ1  
/* (non-Javadoc) ~Lf>/w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Up \_  
*/ !Ng~;2GoA  
public void sort(int[] data) { HYWKx><   
int temp;  v+qHH8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g*[DyIm  
} =b[q<p\  
} 9#D?wR#J=  
} oH]"F  
3*;S%1C^  
} yjB.-o('  
DqbU$jt`  
冒泡排序: f<}>*xH/k  
!K5D:x  
package org.rut.util.algorithm.support; CZ.XEMN\  
YpwMfl4  
import org.rut.util.algorithm.SortUtil; LG> lj$hO  
mCQn '{)  
/** <[w>Mbqj_  
* @author treeroot n1 kh8,  
* @since 2006-2-2 9&7$oI$!J  
* @version 1.0 hB 36o9|9  
*/ J sc`^a%`'  
public class BubbleSort implements SortUtil.Sort{ -]e@FNL  
'>0rp\jC  
/* (non-Javadoc) >+ E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `6BjNV  
*/ 'X{J~fEI!  
public void sort(int[] data) { ;JAb8dyS2  
int temp; })^%>yLfc|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t) h{ w"v  
if(data[j] SortUtil.swap(data,j,j-1); )Ept yH  
} cO^}A(Ma(  
} jo ^+  
} \V/;i.ng  
} />[X k  
R#w9%+  
} Y~C;M6(P  
3IHA+Zz  
选择排序: [G>U>[u|  
]5`Y^hS_g  
package org.rut.util.algorithm.support; .W1i3Z6g  
( V^C7ix:  
import org.rut.util.algorithm.SortUtil; b am*&E%0K  
Z9vJF.clO  
/** /\C5`>x  
* @author treeroot JMIS*njq^  
* @since 2006-2-2 O~=|6#c  
* @version 1.0 "E/UNE6P4  
*/ n\G88)Dv`V  
public class SelectionSort implements SortUtil.Sort { zb=L[2;  
>+8Kl`2sw;  
/* cJ#|mzup  
* (non-Javadoc) hm+,o_+  
* T>\ r}p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sm(t"#dp  
*/ F3 z:|sTqc  
public void sort(int[] data) { *&A/0]w  
int temp; mw,\try  
for (int i = 0; i < data.length; i++) { pXBlTZf  
int lowIndex = i; Z{gJm9  
for (int j = data.length - 1; j > i; j--) { 7m +d;x2  
if (data[j] < data[lowIndex]) { @h$4Mt7N  
lowIndex = j; F4`5z)<*  
} ;*=MI/"N  
} ~w9.}   
SortUtil.swap(data,i,lowIndex); ;;; {<GEQ  
} -D-]tL6w  
} UxS@]YC  
\yNe5  
} 4(O;lVT}  
Z;4pI@ u  
Shell排序: ->29Tns  
sn6:\X<[  
package org.rut.util.algorithm.support; C^W9=OH  
lX*IEAc  
import org.rut.util.algorithm.SortUtil; &hri4p/  
uBXl ltU  
/** *4oj' }  
* @author treeroot tH\ aHU[  
* @since 2006-2-2 ;4] sP^+  
* @version 1.0 Fo86WP}  
*/ nL]-]n;  
public class ShellSort implements SortUtil.Sort{ <~}# Q,9  
2^.qKY@g@  
/* (non-Javadoc) ZN]LJ4|xu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Am&PH(}L  
*/ e6JT|>9A7  
public void sort(int[] data) { n 0*a.  
for(int i=data.length/2;i>2;i/=2){ @M!Wos Rk  
for(int j=0;j insertSort(data,j,i); c 6"hk_  
} $&l} ABn  
} ? pkg1F7  
insertSort(data,0,1); c5f8pa *  
} )of?!>'S[  
tbr1mw'G  
/** E"{2R>mU~  
* @param data nC;2wQ6aO  
* @param j aO'lk  
* @param i JE$aYs<(TF  
*/ 9=wt9` ?  
private void insertSort(int[] data, int start, int inc) { 2A^>>Q/,u  
int temp; \vR&-+8dk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +o94w^'^$b  
} !f^'-  
} AO "pm  
} eGi[LJ)np  
gBZ1Weu-'  
} RO10$1IW.2  
u_~*)w+mS@  
快速排序: },@1i<Bb  
Oi~ ]~+2  
package org.rut.util.algorithm.support; @C34^\aH+  
RV2s@<0p  
import org.rut.util.algorithm.SortUtil; vUa&9Y  
5`?'}_[Yj  
/** MsL*\)*s  
* @author treeroot 6)B6c. 5o  
* @since 2006-2-2 $%ts#56*  
* @version 1.0 I8RPW:B;B  
*/ %1Pn;bUU!  
public class QuickSort implements SortUtil.Sort{ !L)~*!+Gf  
?k7z 5ow  
/* (non-Javadoc) ?9)-?tZ^Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zYW+Goz/C  
*/ r6#It$NU  
public void sort(int[] data) { (g8<"< N?  
quickSort(data,0,data.length-1); =ZaTD-%id  
} ee0)%hc1t  
private void quickSort(int[] data,int i,int j){ (4WAoye|  
int pivotIndex=(i+j)/2; 3TDjWW;#~  
file://swap r?l7_aBv3  
SortUtil.swap(data,pivotIndex,j); D0f.XWd  
NWt`X!  
int k=partition(data,i-1,j,data[j]); H]XY  
SortUtil.swap(data,k,j); ~)kOO oH  
if((k-i)>1) quickSort(data,i,k-1); `- \J/I  
if((j-k)>1) quickSort(data,k+1,j); 'p{N5eM  
{d%% nK~  
} H(~:Ajj+zQ  
/** ?^< E#2a  
* @param data j m]d:=4_  
* @param i )zR(e>VX  
* @param j \UF/_'=K  
* @return 2{sx"/k\A  
*/ ^=lh|C\#  
private int partition(int[] data, int l, int r,int pivot) { ,+gU^dc|hq  
do{ D V  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %FDv6peH  
SortUtil.swap(data,l,r); N`JkEd7TT  
} %%dQIlF  
while(l SortUtil.swap(data,l,r); Id/-u[-yo  
return l; s?irT;=  
} ?C[W~m P  
g{_wMf  
} aBN^J_  
~rN:4Q]/  
改进后的快速排序: 8?> #  
vl "l  
package org.rut.util.algorithm.support; cen[|yCtOH  
Pr%Y!|  
import org.rut.util.algorithm.SortUtil; m@z.H;  
^4\h Z  
/** c8^M::NI  
* @author treeroot yyj?hR@rZ  
* @since 2006-2-2 w4m)lQM  
* @version 1.0 <h*r  
*/ DLWG0$#!  
public class ImprovedQuickSort implements SortUtil.Sort { zv^km5by  
nI_43rG:Uf  
private static int MAX_STACK_SIZE=4096; sr=~U q{g  
private static int THRESHOLD=10; gNsas:iGM  
/* (non-Javadoc) m~#f L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (2oP=9m  
*/ +p%!G1Yz  
public void sort(int[] data) { ;_HG 5}i  
int[] stack=new int[MAX_STACK_SIZE]; J*nQ(*e  
R8*z}xy{  
int top=-1; " aEk#W  
int pivot;  <:,m  
int pivotIndex,l,r; ^{IF2_h"  
/.{q2]  
stack[++top]=0; Z/r=4  
stack[++top]=data.length-1; .]0u#fz0y  
nkp,  
while(top>0){ iE~][_%U  
int j=stack[top--]; jc4#k+sb  
int i=stack[top--]; *u i!|;  
v*.[O/,EBR  
pivotIndex=(i+j)/2; I:ag}L8`  
pivot=data[pivotIndex]; r}-si^fo;  
RWe$ZZSz!  
SortUtil.swap(data,pivotIndex,j); Q||v U  
?nLlZpZ2v  
file://partition Cw*:`  
l=i-1; a+U^mPe  
r=j; *CIR$sS  
do{ |B<;4ISaRI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G<2OL#Y-  
SortUtil.swap(data,l,r); S[2uez`  
} ?>p (*  
while(l SortUtil.swap(data,l,r); &$1ifG   
SortUtil.swap(data,l,j); &^v5 x"  
!R;NV|.eI6  
if((l-i)>THRESHOLD){ O7M8!3Eqm  
stack[++top]=i;  rk F>c  
stack[++top]=l-1; y*BS %xTF  
} `Mh 3v@K:  
if((j-l)>THRESHOLD){ &!xePKvO6k  
stack[++top]=l+1; ]f3[I3;K  
stack[++top]=j; W7F1o[  
} $j+RUelFY  
mM[!g'*  
} BrHw02G  
file://new InsertSort().sort(data); _V jfH2Y  
insertSort(data); )2tDX=D  
} #K:!s<_"  
/** iOFp9i=j  
* @param data AqdQiZ^9  
*/ pQ_EJX)  
private void insertSort(int[] data) { /tG0"1{  
int temp; R">-h;#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Mx7  
} va`/Dp)M  
} -KuC31s_W  
} B"@3Qav3  
%OIJ.  
} K4G43P5q`  
kE8\\}B7  
归并排序: .~nk' m  
z(8:7 G  
package org.rut.util.algorithm.support; &}:]uC  
;*H@E(g  
import org.rut.util.algorithm.SortUtil; KWq&<X5  
@PaOQ@  
/** T4M"s;::1  
* @author treeroot oc^j<!Rh  
* @since 2006-2-2 +2KYtyI  
* @version 1.0 Ao0p=@Y  
*/ ~$WBcqo  
public class MergeSort implements SortUtil.Sort{ cbton<r~  
!Qqi%  
/* (non-Javadoc) eTeZ^G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ef Moi'v  
*/ nT;Rwz$3  
public void sort(int[] data) { **D3.-0u&  
int[] temp=new int[data.length]; Az`c? W%  
mergeSort(data,temp,0,data.length-1); UdiogXZ  
} ,:E*Mw:  
\~(scz$  
private void mergeSort(int[] data,int[] temp,int l,int r){ mSg{0_:  
int mid=(l+r)/2; "CX@a"  
if(l==r) return ; uZg[PS=@!X  
mergeSort(data,temp,l,mid); ~l^Q~W-+  
mergeSort(data,temp,mid+1,r); I*SrK Zb  
for(int i=l;i<=r;i++){ :rBPgrt  
temp=data; $ #*";b)QY  
} C8xxR~mq  
int i1=l; +sW;p?K7eO  
int i2=mid+1; mw\ z'  
for(int cur=l;cur<=r;cur++){ :j)v=qul  
if(i1==mid+1) 1@i|[dq  
data[cur]=temp[i2++]; `<"@&N^d  
else if(i2>r) {\-9^RL  
data[cur]=temp[i1++]; &2P+9j>  
else if(temp[i1] data[cur]=temp[i1++]; M3 TsalF  
else G[bWjw86O  
data[cur]=temp[i2++]; }%T8?d]  
} C-}@.wr(  
} &P0jRT3e#Y  
v>[U*E  
} X%Lhu6F  
t)i{=8 rq  
改进后的归并排序: $M0F~x  
(\I9eBm  
package org.rut.util.algorithm.support; pef)c,U$  
_<8~CWo:  
import org.rut.util.algorithm.SortUtil; *3Vic  
#B^A"?*S  
/** "KiTjl`M,  
* @author treeroot )Z=S'm k4_  
* @since 2006-2-2 XHh!Q0v;  
* @version 1.0 1^HmM"DD  
*/ pnpx`u;  
public class ImprovedMergeSort implements SortUtil.Sort { 4#D<#!]^  
7~I*u6zY  
private static final int THRESHOLD = 10; L,+m5wKj[  
}Z,xF`  
/* 0p31C7!  
* (non-Javadoc) z{q|HO  
* >x3$Ld  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Od,P,t9  
*/ Fs3rsig  
public void sort(int[] data) { -_KO}_  
int[] temp=new int[data.length]; Rt9S  
mergeSort(data,temp,0,data.length-1); '|7'dlW  
} FB>^1B]]  
0D s W1  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'Zket=Sm;  
int i, j, k; #$^vP/"$  
int mid = (l + r) / 2; Qf .ASC   
if (l == r) yU{Q`6u T  
return; <NYf!bx  
if ((mid - l) >= THRESHOLD) v] ?zG&Jh  
mergeSort(data, temp, l, mid); "G[yV>pxv  
else [Nw%fuB  
insertSort(data, l, mid - l + 1); wyi%!H  
if ((r - mid) > THRESHOLD) 9sI&&Jg  
mergeSort(data, temp, mid + 1, r); i[#XYX'\  
else |b+ZKRW  
insertSort(data, mid + 1, r - mid); !!\x]$v  
8{f~tPY  
for (i = l; i <= mid; i++) { Gm.sl},  
temp = data; hRFm]q  
} b;5&V_  
for (j = 1; j <= r - mid; j++) { h6(\ tRd!\  
temp[r - j + 1] = data[j + mid]; (rE.ft5$9  
} ~85>.o2RDW  
int a = temp[l]; e a3f`z  
int b = temp[r]; *I6W6y;E=  
for (i = l, j = r, k = l; k <= r; k++) { /n3Qcht  
if (a < b) { A0l-H/l7  
data[k] = temp[i++]; q(9S4F   
a = temp; +td]g9Ie  
} else {  %ZR<z$  
data[k] = temp[j--]; gy*c$[NS$  
b = temp[j]; %jErLg  
} 8JFvz(SK>  
} 4/?@ %  
} ec sQshR  
Re<@ .d  
/** |6O7_U#q  
* @param data NE)Yd7m-  
* @param l 5I6u 2k3  
* @param i &~K4I  
*/ M?ObK#l!_  
private void insertSort(int[] data, int start, int len) { 8:sQB% BB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]/6i#fTw  
}  X? l5}  
} /_D_W,#P  
} 3Ow bU  
} 1$#1  
8n"L4jb(:  
堆排序: {bP )Fon  
[lz#+~rOS  
package org.rut.util.algorithm.support; p&$O}AX|  
/_[?i"GW  
import org.rut.util.algorithm.SortUtil; WXs?2S*  
R^?9 V=Y<T  
/** hCPyCq]  
* @author treeroot #;])/8R%  
* @since 2006-2-2 NyR,@n1  
* @version 1.0 `Iqh\oY8-  
*/ ^:u-wr8?{  
public class HeapSort implements SortUtil.Sort{ :LxsiDrF[  
p~3 (nk<+  
/* (non-Javadoc) j_{f(.5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,.z?=]'en  
*/ NA!?.zn  
public void sort(int[] data) { eqSCE6r9x  
MaxHeap h=new MaxHeap(); qx1+'  
h.init(data); ^e{]WH?  
for(int i=0;i h.remove(); zhgvqg-  
System.arraycopy(h.queue,1,data,0,data.length); \OW.?1d  
} {WvYb,  
_lBHZJ+  
private static class MaxHeap{ hlBMRx49  
,}:}"cl  
void init(int[] data){ *_sSM+S  
this.queue=new int[data.length+1]; dlRTxb^Y>u  
for(int i=0;i queue[++size]=data; .x'?&7#(  
fixUp(size); -A^o5s  
} jRN>^Ur;g  
} f=IF_|@^S  
):]5WHYg  
private int size=0; vyvb-oz;u  
~5>k_\ G8  
private int[] queue; D4O^5?F)|  
)8`i%2i=  
public int get() { -)Hc^'.  
return queue[1]; {_R{gpj'  
} Ei4Iv#Oi`  
(_3QZ  
public void remove() { UB,0c)   
SortUtil.swap(queue,1,size--); gE9x+g  
fixDown(1); m(w9s;<  
} +Kp8X53  
file://fixdown [4r<WvUaM  
private void fixDown(int k) { sV;q(,oru  
int j; GmH`ipi  
while ((j = k << 1) <= size) { &fW'_,-  
if (j < size %26amp;%26amp; queue[j] j++; 3vHkhhYQ  
if (queue[k]>queue[j]) file://不用交换 M=54xTh0Y  
break; nyL$z-I)  
SortUtil.swap(queue,j,k); N$.=1Q$F6  
k = j; _H"_&m$aDm  
} meYGIP:n  
} v, !`A!{D  
private void fixUp(int k) { *G8Z[ht%r  
while (k > 1) { R0urt  
int j = k >> 1; Py\/p Fvg  
if (queue[j]>queue[k]) 5fy{!  
break; a$3] `  
SortUtil.swap(queue,j,k); Z^c\M\`7  
k = j; QIfP%,LT  
} q)3QmA~  
} T>|Y_3YO_a  
OHv4Yy]$B  
} %6la@i  
u s8.nL/  
} \olY)b[  
Z>[n~{-,p  
SortUtil: 0|kH0c,T-  
8p#V4liE  
package org.rut.util.algorithm; E.,  
j8+>E ?nm  
import org.rut.util.algorithm.support.BubbleSort; KMx '(  
import org.rut.util.algorithm.support.HeapSort; uNca@xl'  
import org.rut.util.algorithm.support.ImprovedMergeSort; -^JPY)\R  
import org.rut.util.algorithm.support.ImprovedQuickSort; A{Qo}F<*  
import org.rut.util.algorithm.support.InsertSort; a- lF}P\  
import org.rut.util.algorithm.support.MergeSort; kDG?/j90D  
import org.rut.util.algorithm.support.QuickSort; /!sGO:  
import org.rut.util.algorithm.support.SelectionSort; Ya}}a  
import org.rut.util.algorithm.support.ShellSort; a@-bw4S D  
T^ - -:1  
/** ,<$rSvMfg  
* @author treeroot IP^1ca#<  
* @since 2006-2-2 5cb8=W -  
* @version 1.0 b3ys"Vyn  
*/ Z>~7|vl  
public class SortUtil { :1;"{=Yx}  
public final static int INSERT = 1; 6]mAtA`Y  
public final static int BUBBLE = 2; Z= =c3~  
public final static int SELECTION = 3; y Z)-=H  
public final static int SHELL = 4; p^w_-( p  
public final static int QUICK = 5; H`,t"I  
public final static int IMPROVED_QUICK = 6; b#*"eZj  
public final static int MERGE = 7; t]T't='  
public final static int IMPROVED_MERGE = 8; K1w:JA6(  
public final static int HEAP = 9; L) UCVm  
2t?Vl%<  
public static void sort(int[] data) { =7EkN% V:{  
sort(data, IMPROVED_QUICK); )6%a9&~H  
} `Ue5;<K-/  
private static String[] name={ j Y(|z*|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]MC5 uKn  
}; [ #fz [U  
zYM0?O8pJ~  
private static Sort[] impl=new Sort[]{ -XnOj2  
new InsertSort(), 4?]s%2U6  
new BubbleSort(), -wVuM.n(Z  
new SelectionSort(), eh8lPTKil  
new ShellSort(), Lj/  
new QuickSort(), (C.aQ)|T  
new ImprovedQuickSort(), Fzt7@VNxc  
new MergeSort(), Z*IW*f&0>1  
new ImprovedMergeSort(), a`zHx3Yg  
new HeapSort() %r&36d'  
}; 39d$B'"<1  
6n;? :./  
public static String toString(int algorithm){ g1 =>u  
return name[algorithm-1]; nW`] =  
} ^V7)V)Z;0  
|pBvy1e4)  
public static void sort(int[] data, int algorithm) { P0RtS1A  
impl[algorithm-1].sort(data); >Bu _NoM  
} wxN&k$`a  
S4rm K&  
public static interface Sort { NN5G '|i  
public void sort(int[] data); 0Hx'C^m72  
} _:FD#5BZ1  
)P,pW?h$  
public static void swap(int[] data, int i, int j) { cM\BEh h  
int temp = data; mex@~VK  
data = data[j]; P.jy7:dB,  
data[j] = temp; %/BBl$~ji  
} WO6+r?0M2  
} b;nqhO[f}  
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