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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。 {9F}2 SJ  
插入排序: d_V7w4lK  
v~dUH0P<>e  
package org.rut.util.algorithm.support; :Ef$[_S>  
DoeE=X*`k  
import org.rut.util.algorithm.SortUtil; <c(%xh46  
/** C91'dM  
* @author treeroot >Zm|R|{BE  
* @since 2006-2-2 vHymSU/J  
* @version 1.0 <&1hJ)O  
*/ V22Br#+  
public class InsertSort implements SortUtil.Sort{ f0{ tBD!%  
up?S (.*B  
/* (non-Javadoc) FSZ :}Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y>J6)F =  
*/ pug;1UZ  
public void sort(int[] data) { !r*JGv=  
int temp; aHle s5   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sPX~>8}|VP  
} ]INt9Pvqm  
} 2-duzc  
} {4R;C~E8  
tD,~i"0;  
} 51s3hX$  
riglEA[^  
冒泡排序: I'R|B\  
)4 w 3$Q  
package org.rut.util.algorithm.support; 90Z4saSUw  
y8di-d3_  
import org.rut.util.algorithm.SortUtil; ;ejtP #$  
j{%'A  
/** 8;,(D# p  
* @author treeroot `C*psS  
* @since 2006-2-2 ARB^]  
* @version 1.0 3=lQZi<]%  
*/ cn$0^7?  
public class BubbleSort implements SortUtil.Sort{ p!LaR.8]  
u&Xn#f h  
/* (non-Javadoc) ^12}#I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LtDGu})1  
*/ +227SPLd  
public void sort(int[] data) { !?{%9  
int temp; C #@5:$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S)@) @3  
if(data[j] SortUtil.swap(data,j,j-1); _~b]/]|z#N  
} Oimq P  
} (Vy`u)gG  
} l\=He  
} Ot!*,%sjQ  
VSc)0eyn  
} 6~8X/ -02  
A0uA\E4q  
选择排序: G9c2kX.Bf  
.t%` "C  
package org.rut.util.algorithm.support; lJ4&kF=t  
B}ASZYpW>  
import org.rut.util.algorithm.SortUtil; rgrsNr:1  
9D& 22hL4  
/** V7Mp<x%  
* @author treeroot 1d~cR  
* @since 2006-2-2 }zwHUf9q1  
* @version 1.0 MB(l*ju0  
*/ ! lm0zR  
public class SelectionSort implements SortUtil.Sort { ^: V6=  
(qy82F-|2  
/* x4S0C[k  
* (non-Javadoc) TSYe ~)I  
* a)M#O\i`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OD1>s6uA7  
*/ vqBT^Q_q;  
public void sort(int[] data) { bQ_N^[oxQ  
int temp; 'sAs#  
for (int i = 0; i < data.length; i++) { !p e!Z-,  
int lowIndex = i; \kksZ4,  
for (int j = data.length - 1; j > i; j--) { .:+&2#b  
if (data[j] < data[lowIndex]) { lJXihr  
lowIndex = j; VTJ,;p_UH  
} f5|Ew&1EP  
} !PY.F nZ  
SortUtil.swap(data,i,lowIndex); bp(X\:zAy  
} "+ 8Y{T  
} ?Kf?Z`9 *Y  
"0A !fRI~  
} L+$9 ,<'[  
T! fF1cpF\  
Shell排序: gJI(d6  
C XiSin  
package org.rut.util.algorithm.support; 9^1.nE(R&  
j.y8H  
import org.rut.util.algorithm.SortUtil; E6y ?DXW H  
73d7'Fw  
/** i_qR&X  
* @author treeroot }c0EGoU}?  
* @since 2006-2-2 zJa,kN|m  
* @version 1.0 dWAKIBe  
*/ 1Igo9rv  
public class ShellSort implements SortUtil.Sort{ =L?(mNHT  
d<^o@  
/* (non-Javadoc) qx3`5)ef  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OBmmOswg~  
*/ +zLh<q0  
public void sort(int[] data) { h4dT N}  
for(int i=data.length/2;i>2;i/=2){ WscNjWQ^TD  
for(int j=0;j insertSort(data,j,i); 75t5:>"[  
} h\qM5Qx+Q  
} SPK% ' s  
insertSort(data,0,1); W"L;8u  
} d|(@#*{T]  
-& \?Q_6  
/** a8!/V@a  
* @param data vT>ki0P_;  
* @param j 7IH^5r  
* @param i 3[O;HS3|  
*/ an9k2 F.)  
private void insertSort(int[] data, int start, int inc) { ~kAen  
int temp; XT 'v7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MX{p)(HW  
} .V:H~  
} $x %VUms  
} XQ]5W(EP  
LxC"j1wfl  
} !F&Ss|(}  
r% ]^(  
快速排序: 6~j.S "  
27!9LU  
package org.rut.util.algorithm.support; #=B~} _  
w$5#jJX\  
import org.rut.util.algorithm.SortUtil; 3d|n\!1r  
:. ja~Q  
/** w;p!~o &  
* @author treeroot ?YO$NYwE  
* @since 2006-2-2 zg=F;^oZ<  
* @version 1.0 4uG:*0{Yx  
*/ Nn;p1n dN  
public class QuickSort implements SortUtil.Sort{ ' cx&:s  
g5*Zg_G/  
/* (non-Javadoc) M4:}`p=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V=,VOw4  
*/ u.s-/ g  
public void sort(int[] data) { $zvqjT:>  
quickSort(data,0,data.length-1); <U ?_-0  
} ZiS<vWa3R  
private void quickSort(int[] data,int i,int j){ TZ,kmk#  
int pivotIndex=(i+j)/2; !wttKUO?  
file://swap ;w_f^R #  
SortUtil.swap(data,pivotIndex,j); eQUm!9)  
*[eh0$  
int k=partition(data,i-1,j,data[j]); ,mE*k79L6  
SortUtil.swap(data,k,j); P`K?k<  
if((k-i)>1) quickSort(data,i,k-1); &91U(Go  
if((j-k)>1) quickSort(data,k+1,j); k*8 ld-O  
aT %A<'O!  
} loLN ~6  
/** L[Dr[  
* @param data FM3DJ?\L-  
* @param i J c~{ E  
* @param j )`ZTu -|  
* @return jHxg(]  
*/ KF"&9nB  
private int partition(int[] data, int l, int r,int pivot) { >6(91J  
do{ P7Ws$7x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fQ^45ulz  
SortUtil.swap(data,l,r); k2xOu9ncEj  
} 8W|qm;J98  
while(l SortUtil.swap(data,l,r); |lijnfp  
return l; : _>/Yd7-&  
} b'N(eka  
l 6;}nG  
} iJza zQ  
Z~VSWrw3  
改进后的快速排序: gt1W_C\  
wY`yP!xO  
package org.rut.util.algorithm.support; ad1%"~1  
OI9V'W$  
import org.rut.util.algorithm.SortUtil; q+/c+u?=^  
W7a aL  
/** 1{sfDw[s  
* @author treeroot /OpVr15  
* @since 2006-2-2 4q`$nI Bi  
* @version 1.0 (\ze T5  
*/ P-?ya!@"  
public class ImprovedQuickSort implements SortUtil.Sort { Ed%8| M3  
J0e~s  
private static int MAX_STACK_SIZE=4096; RfMrGC^?  
private static int THRESHOLD=10; (P-Bmu!s  
/* (non-Javadoc) mE"?{~XVL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (YbRYu  
*/ S[bFS7[  
public void sort(int[] data) { :h>d'+\  
int[] stack=new int[MAX_STACK_SIZE]; ]Y'oxh  
a_UVb'z  
int top=-1; 0{/P1  
int pivot; |(E.Sb  
int pivotIndex,l,r; pr2b<(Pm  
 p=Nord  
stack[++top]=0; ubn`w=w$  
stack[++top]=data.length-1; >4A~?=  
,1"w2,=  
while(top>0){ '[ZRWwhr  
int j=stack[top--]; cC.=,n  
int i=stack[top--]; l@8UL</W  
F j_r n  
pivotIndex=(i+j)/2; H1(Zz n1  
pivot=data[pivotIndex]; XCNfogl  
A Z7  
SortUtil.swap(data,pivotIndex,j); Nj2f?',;U  
5YlY=J  
file://partition Dl kHE8r\  
l=i-1; O'~c;vBI  
r=j; J Cu3,O!q  
do{ zW`$T 88~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YEZd8Y  
SortUtil.swap(data,l,r); v(v Lk\K7  
} *TpzX y  
while(l SortUtil.swap(data,l,r); P< +5So0  
SortUtil.swap(data,l,j); KWVEAHIn  
un4q,Ac~0  
if((l-i)>THRESHOLD){ %rpJZ t  
stack[++top]=i; 0W|}5(C  
stack[++top]=l-1; a}Db9=  
} etX &o5A  
if((j-l)>THRESHOLD){ Yq;|Me{h  
stack[++top]=l+1; E\V-< ]o  
stack[++top]=j; gWo`i  
} OC|9~B1  
g0m6D:f  
} Th&* d;  
file://new InsertSort().sort(data); '/^bO#G:  
insertSort(data); 4~Ptn/ g  
} =qY!<DB[L  
/** P=:mn>  
* @param data sN^3bfi!i  
*/ VZ?"yUZ Id  
private void insertSort(int[] data) { oyGO!j  
int temp; 3"O)"/"Q.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CKShz]1  
} |sN>/89=/  
} [E_eaez7#  
} ~+1t3M e  
m>C}T  
} 8SvPDGu `]  
_zG9.?'b3  
归并排序: ~c~$2Xo  
PiD%PBmUl  
package org.rut.util.algorithm.support; HH>"J /;c,  
cTO\Vhg  
import org.rut.util.algorithm.SortUtil; 8Wn;U!qT  
wN[mU  
/** ;2||g8'  
* @author treeroot -2}-;|  
* @since 2006-2-2 '-s Ai  
* @version 1.0 En:.U9?X  
*/ bkQEfx.  
public class MergeSort implements SortUtil.Sort{ Vy;f4;I{  
[|ghq  
/* (non-Javadoc) 2IgTB|2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mE3^5}[>  
*/ B+G,v:)R6z  
public void sort(int[] data) { {EKzPr/  
int[] temp=new int[data.length]; 5T?esF<  
mergeSort(data,temp,0,data.length-1); MTZbRi6z  
} $sDvE~f0n  
N;cEf7+f  
private void mergeSort(int[] data,int[] temp,int l,int r){ I g/SaEF  
int mid=(l+r)/2; p`// *gl  
if(l==r) return ; Byf5~OC  
mergeSort(data,temp,l,mid); /5^"n4/M  
mergeSort(data,temp,mid+1,r); .\kcWeC\  
for(int i=l;i<=r;i++){ wYtL1D(  
temp=data; o8+ZgXct  
} VvuwgJX  
int i1=l; o9dqHm  
int i2=mid+1; G1 ?."  
for(int cur=l;cur<=r;cur++){ x!klnpGp  
if(i1==mid+1) Y>KRI2](<  
data[cur]=temp[i2++]; Qe=,EXf  
else if(i2>r) ^dB~#A1  
data[cur]=temp[i1++]; [h "*>J{  
else if(temp[i1] data[cur]=temp[i1++]; OhmKjY/}  
else uT8@p8  
data[cur]=temp[i2++]; mzuf l:-=  
} Vv=/{31  
} +I$c+WfU  
M_tY:v  
} 8spoDb.S  
l[=7<F  
改进后的归并排序: #s JE{Tb  
> Y <in/  
package org.rut.util.algorithm.support; +Hz});ix<  
70p1&Y7or  
import org.rut.util.algorithm.SortUtil; 8'Dp3x^W>  
5'f4=J$Z)  
/** 8$O=HE*  
* @author treeroot V5y8VT=I  
* @since 2006-2-2 ]M AB  
* @version 1.0 )X{x\ /N  
*/ u.( WW(/N  
public class ImprovedMergeSort implements SortUtil.Sort { Dm=t`_DL8  
D>9~JHB  
private static final int THRESHOLD = 10; ^R* _Q,o#  
@xKLRw  
/* WPVur{?<  
* (non-Javadoc) * z|i{=W F  
* 1PWs">*(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dkTj KV  
*/ )(~s-x^\z@  
public void sort(int[] data) { KK; 3<kX  
int[] temp=new int[data.length]; 44 bTx y  
mergeSort(data,temp,0,data.length-1); ;cQhs7m(9  
} /(C?3 }}L  
<V?M~u[7f  
private void mergeSort(int[] data, int[] temp, int l, int r) { CJB   
int i, j, k; VU+`yQp  
int mid = (l + r) / 2; "&jA CI  
if (l == r) }gL:"C"~  
return; :uhU<H<,f  
if ((mid - l) >= THRESHOLD) K_/8MLJQ  
mergeSort(data, temp, l, mid); rU?sUm,ch  
else 5/j7C>  
insertSort(data, l, mid - l + 1); UhuEE  
if ((r - mid) > THRESHOLD) PW(4-H  
mergeSort(data, temp, mid + 1, r); N3?hyR<T  
else 6?y<F4  
insertSort(data, mid + 1, r - mid); FqQqjA  
>]N}3J}47g  
for (i = l; i <= mid; i++) { &u5OL?>  
temp = data; :;[pl|}tM  
} O@;;GJ  
for (j = 1; j <= r - mid; j++) { b&:>v9U  
temp[r - j + 1] = data[j + mid]; VwfeaDJw  
} L:$kd `v[  
int a = temp[l]; N@D]Q&;+(T  
int b = temp[r]; 0zrgK;9  
for (i = l, j = r, k = l; k <= r; k++) { V1Yab#  
if (a < b) { P:GAJ->;]>  
data[k] = temp[i++]; {"X n`@Y  
a = temp; t']d_Vcza  
} else { 6&8([J  
data[k] = temp[j--]; %LBa;M  
b = temp[j]; 9>gxJ7pY  
} nx #0*r}5  
} *1F DK{  
} 4.7 YIM  
p=F!)TnJN  
/** 2'O2n]{  
* @param data RbPD3& .  
* @param l <A{|=2<  
* @param i cj ?aCVa  
*/ l-;u*JA  
private void insertSort(int[] data, int start, int len) { }DH3_M!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); USF9sF0l  
} &PY~m<F  
} R*Jnl\?>@  
} =T_E]>FF9  
} 8 xfn$  
sVdn>$KXk  
堆排序: U^qQ((ek  
XO[S(q  
package org.rut.util.algorithm.support; O~3<P3W  
f3,qDbQyJ  
import org.rut.util.algorithm.SortUtil; ]=X6* E*/E  
GYv D*?uBc  
/** @VdkmqXz  
* @author treeroot x`7Ch3`4}  
* @since 2006-2-2 JmMB=} <  
* @version 1.0 MNC=r?  
*/ _=%F6}TE  
public class HeapSort implements SortUtil.Sort{ g.L~Z1-  
*\#/4_yB}  
/* (non-Javadoc) ?vA)F)MS   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 $5 y]%!  
*/ UA>3,|gV1  
public void sort(int[] data) { \"]KF8c^_  
MaxHeap h=new MaxHeap(); VT>TmfN(I  
h.init(data); z@bq*':~J  
for(int i=0;i h.remove(); o!6~tO=%  
System.arraycopy(h.queue,1,data,0,data.length); rcq^mPdQ  
} EY$Dtb+g8  
DIqM\ ><  
private static class MaxHeap{ RIC\f_Dv  
KU]co4]8^s  
void init(int[] data){ h#hx(5"6  
this.queue=new int[data.length+1]; e>$d*~mwn  
for(int i=0;i queue[++size]=data; Bb[WtT}=  
fixUp(size); GGM|B}U p  
} |Do+=Gr$t@  
} 3!l+) g  
DB~3(r?K  
private int size=0; $ol]G`+  
8+f{ /  
private int[] queue; rCK   
y ;/T.W9!  
public int get() { fMpxe(  
return queue[1]; -1_WE/Ps  
} hqXp>.W  
jo-2D[Q{  
public void remove() { &6feR#~A  
SortUtil.swap(queue,1,size--); kk`K)PESi  
fixDown(1); <<=.;`(/v  
} ^ABt g#  
file://fixdown IdS=lN$  
private void fixDown(int k) { "L0Q"t:  
int j; *5QN:  
while ((j = k << 1) <= size) { JRw<v4pZ  
if (j < size %26amp;%26amp; queue[j] j++; ; Sd== *  
if (queue[k]>queue[j]) file://不用交换 \?D~&d,a=  
break; exZgk2[0  
SortUtil.swap(queue,j,k); 5gq  
k = j; uIy$| N  
} :' =le*h  
} 3jqV/w[-  
private void fixUp(int k) { |EGC1x]j=  
while (k > 1) { WaPuJ 5;e  
int j = k >> 1; 4<j7F4  
if (queue[j]>queue[k])  erQQ_  
break; 7;I;(iY  
SortUtil.swap(queue,j,k); Zv0'OX~8i  
k = j; %{|67h  
} %p(X*mVX  
} ~} 02q5H  
1`sTGNo  
} h+c9FN  
8DuD1hZq  
} N;HG@B!m  
y]okOEV0  
SortUtil: ?$Dc>  
k|^YYi= xF  
package org.rut.util.algorithm; JLbmh1'  
>g;995tG  
import org.rut.util.algorithm.support.BubbleSort;  9+ A~(  
import org.rut.util.algorithm.support.HeapSort; I&%KOe0  
import org.rut.util.algorithm.support.ImprovedMergeSort; g5;Ig  
import org.rut.util.algorithm.support.ImprovedQuickSort; c :2w(BVi  
import org.rut.util.algorithm.support.InsertSort; r h c&#JS  
import org.rut.util.algorithm.support.MergeSort; #Ibpf ,  
import org.rut.util.algorithm.support.QuickSort; `< 82"cAT{  
import org.rut.util.algorithm.support.SelectionSort; uqM=/T^A  
import org.rut.util.algorithm.support.ShellSort; c 'rn8Jo}  
^&lkh@Y1q  
/** Eq=j+ch7  
* @author treeroot goOw.~dZ'  
* @since 2006-2-2 #l 6QE=:  
* @version 1.0 gh-i| i,  
*/ 'A,)PZL9i  
public class SortUtil { #]h&GX  
public final static int INSERT = 1; X>i{288M3  
public final static int BUBBLE = 2; ;YZ'd"0v  
public final static int SELECTION = 3; + } y"S-  
public final static int SHELL = 4; FY)US>  
public final static int QUICK = 5; &W}6Xg(  
public final static int IMPROVED_QUICK = 6; F+]cFx,/  
public final static int MERGE = 7;  Cwl:  
public final static int IMPROVED_MERGE = 8; i}O.,iH  
public final static int HEAP = 9; YH&q5W,KX  
hGcu(kAC,  
public static void sort(int[] data) { l(HxZlHr  
sort(data, IMPROVED_QUICK); :_h#A }8Xd  
} G1Vn[[%k  
private static String[] name={ CY\D.Eow  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xKkXr-yb`f  
}; dwouw*8  
'A9Z ((  
private static Sort[] impl=new Sort[]{ _K B%g_{  
new InsertSort(), "|BSGV!8  
new BubbleSort(), t)mc~M9w  
new SelectionSort(), J(SGaHm@  
new ShellSort(), x2f=o|]D'  
new QuickSort(), (o^?i2)g  
new ImprovedQuickSort(), $$XeCPs 0  
new MergeSort(), 2$'bOo  
new ImprovedMergeSort(), /I:&P Pff  
new HeapSort() i]Bu7Fuu  
}; Yq'D-$@  
lx7]rkWo|a  
public static String toString(int algorithm){  F##xVmR~  
return name[algorithm-1]; TkVqv v  
} 6Fc*&7Z+  
%/d1x  
public static void sort(int[] data, int algorithm) { 6ld /E  
impl[algorithm-1].sort(data); UjMWSPEBy  
} 1B@7#ozWA?  
 `fE'$2  
public static interface Sort { '.jYu7   
public void sort(int[] data); &A=c[pc  
} .#Z"Sj  
DG}s`'  
public static void swap(int[] data, int i, int j) { :? s{@7  
int temp = data; dkeMiL m  
data = data[j]; ^9><qKbO  
data[j] = temp; yb>R(y  
} cI&XsnY  
} ,N nh$F  
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