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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。 ?B"k9+%5ej  
插入排序: W h^9 Aq  
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package org.rut.util.algorithm.support; ST#MCh-00  
+ S^OzCGk  
import org.rut.util.algorithm.SortUtil; (HW!!xM  
/** O#g'4 S  
* @author treeroot e bSG|F  
* @since 2006-2-2  TM1isZ  
* @version 1.0 msyC."j0jU  
*/ qBKRm0<W  
public class InsertSort implements SortUtil.Sort{ 1'[RrJ$Q  
0'IV"eH2  
/* (non-Javadoc) (|EnRk-E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  a9ko3L  
*/ ")t ^!x(v  
public void sort(int[] data) { b V5{  
int temp; Cz%tk}2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Be=J*D!E=>  
} IezOal  
} O#,Uz2  
} GxL;@%B  
%8_bh8g-  
} qW1d;pt  
 {hzU  
冒泡排序: S4m??B  
,F,\bp}  
package org.rut.util.algorithm.support;  jIMT&5k  
K/,y"DUN&  
import org.rut.util.algorithm.SortUtil; *f[nge&.  
G^`IfF-j  
/** kPm{tc  
* @author treeroot ETw7/S${  
* @since 2006-2-2 D`?=]Ysz(  
* @version 1.0 J3F-Yl|  
*/ LyaFWx   
public class BubbleSort implements SortUtil.Sort{ aL9 yNj}2  
4$);x/ a  
/* (non-Javadoc) 7hs1S|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b ?p <y`  
*/ X0\2qD  
public void sort(int[] data) { -bN;nSgb  
int temp; )"W(0M] >  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z r}5)ZR.  
if(data[j] SortUtil.swap(data,j,j-1); qgT~yDm  
} CEwMPPYnD  
} FUVoKX! #  
} |a3v!va  
} 3C,G~)= x  
-|ho 8alF  
} TY(B]Q_o  
raWs6b4Q  
选择排序: Kw`{B3"  
0W92Z@_GY  
package org.rut.util.algorithm.support; Rqi= AQ  
1G0U}-6RH  
import org.rut.util.algorithm.SortUtil; 5r*5Co+  
eI+<^p_j2  
/** {`FkiB` i  
* @author treeroot SXYH#p  
* @since 2006-2-2 ne]P-50  
* @version 1.0 c>_tV3TDA  
*/ k`l={f8C  
public class SelectionSort implements SortUtil.Sort { 9{D u)k  
 xJphG  
/* O%g Q  
* (non-Javadoc) {:D8@jb[  
* |[)k5nUQ|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PTU_<\  
*/ V`/ E$a1&  
public void sort(int[] data) { y9K U&L2  
int temp; p#5U[@TK  
for (int i = 0; i < data.length; i++) { +3a} ~pW  
int lowIndex = i; KASuSg+  
for (int j = data.length - 1; j > i; j--) { +-DF3(  
if (data[j] < data[lowIndex]) { OcA_m.  
lowIndex = j; Q[j'FtP%  
} e -!6m #0  
} scf.> K2  
SortUtil.swap(data,i,lowIndex); (E{>L).~  
} WH>=*\  
} (Dy6I;S  
>@b]t,rrK  
} R`[jkJrc  
B]KR*  
Shell排序: DFgQ1:6[  
?Uq;>  
package org.rut.util.algorithm.support; z\d{A7  
8 #m,TOp  
import org.rut.util.algorithm.SortUtil; \dm5Em/  
prHM}n{0  
/** B0h|Y.S8%1  
* @author treeroot .3X5~OH  
* @since 2006-2-2 CIxa" MW  
* @version 1.0 e=>:(^CS   
*/ 1@dB*Jt  
public class ShellSort implements SortUtil.Sort{ ^(j}'p,  
)8cb @N  
/* (non-Javadoc) 1^f7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `"(FWK=8)"  
*/ ',WnT:  
public void sort(int[] data) { "QKCZ8_C  
for(int i=data.length/2;i>2;i/=2){ og`rsl  
for(int j=0;j insertSort(data,j,i);  i/vo  
} 2 c 2lK  
} Fy; sVB  
insertSort(data,0,1); ,Y:ET1:  
} ty"|yA  
r}**^"mFy  
/** Qe[ejj1o:  
* @param data H*m3i;"4p\  
* @param j B\73 Vf  
* @param i -wh?9 ?W  
*/ h SeXxSb:  
private void insertSort(int[] data, int start, int inc) { ]9 JLu8GO  
int temp; R)@2={fd}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -JEiwi,  
} J~]Y  
} H;h$k]T  
} oe'f?IY  
@%'1Jd7-Wp  
} 5}3#l/  
P<%}!Y  
快速排序: rD\)ndPv  
fT2F$U  
package org.rut.util.algorithm.support; \,AE5hnO  
YE*%Y["  
import org.rut.util.algorithm.SortUtil; r|_@S[hZg  
CN{xh=2qY[  
/** d-sT+4o}  
* @author treeroot }T5 E^  
* @since 2006-2-2 1dhuLN%Ce  
* @version 1.0 P=[_W;->}  
*/ 7es<%H  
public class QuickSort implements SortUtil.Sort{ _qxBjB4t"a  
S8j!?$`  
/* (non-Javadoc) C09rgEB\B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |JL?"cc  
*/ ^ Fnag]qQ  
public void sort(int[] data) { w;{=  
quickSort(data,0,data.length-1); S4_C8  
} f7SMO-3a  
private void quickSort(int[] data,int i,int j){ e7Sp?>-d  
int pivotIndex=(i+j)/2; 8nu@6)#  
file://swap +a'LdEp  
SortUtil.swap(data,pivotIndex,j); 1K UM!DUD  
V0<g$,W=  
int k=partition(data,i-1,j,data[j]); j* ZU}Ss  
SortUtil.swap(data,k,j); ;/h&40&  
if((k-i)>1) quickSort(data,i,k-1); &RHZ7T  
if((j-k)>1) quickSort(data,k+1,j); '8yCwk  
j S4\;  
} /V {1Zw=  
/** bess b>=  
* @param data -d.i4X3j  
* @param i O**~ Tj  
* @param j +8|9&v`  
* @return Ox5Es  
*/ *N |ak =  
private int partition(int[] data, int l, int r,int pivot) { 4;bc!> sfC  
do{ tb^/jzC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4J1_rMfh  
SortUtil.swap(data,l,r); S\SYFXUl  
} lu?:1V-  
while(l SortUtil.swap(data,l,r); GBl[s,g[|  
return l; :jf/$]p  
} b8 E{~z  
xHD$0eq  
} 1I awi?73  
cy(4g-b]@e  
改进后的快速排序: 9/`3=r@  
9SBTeJ$RZ  
package org.rut.util.algorithm.support; &qzy?/i8  
Y?qUO2  
import org.rut.util.algorithm.SortUtil; \ iA'^69  
jL7r1pu5  
/** K))P 2ss  
* @author treeroot mKqXB\<  
* @since 2006-2-2 DbSR(:  
* @version 1.0 VRZqY7j}g  
*/ /iEQ}  
public class ImprovedQuickSort implements SortUtil.Sort { Ne)3@?  
1l'JoU.<  
private static int MAX_STACK_SIZE=4096; o%,?v 9  
private static int THRESHOLD=10; AHo}K\O?r  
/* (non-Javadoc) M>Q3;s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f5Hv![x  
*/ >"+ ho  
public void sort(int[] data) { 5\EnD, y  
int[] stack=new int[MAX_STACK_SIZE]; R,s}<N$  
r1Hh @sxn  
int top=-1; lWn}afI  
int pivot; 6V"u ovN2  
int pivotIndex,l,r; P }^Y"zF2  
XtQwLH+F  
stack[++top]=0;  "D'rsEh  
stack[++top]=data.length-1; '5b0 K1$"  
EOZ 6F-':  
while(top>0){ ~Zn|(  
int j=stack[top--]; AmZW=n2^  
int i=stack[top--]; }[=)sb_  
ULhXyItL  
pivotIndex=(i+j)/2; BIS.,  
pivot=data[pivotIndex]; 9q+W>wt  
n2~WUK  
SortUtil.swap(data,pivotIndex,j); rvU^W+d  
2rW9ja  
file://partition qW4DW4  
l=i-1; +\*b?x  
r=j; :7i x`C2  
do{ Eyz.^)r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )4h|7^6ji  
SortUtil.swap(data,l,r); A.mFa1lH  
} !x:{"  
while(l SortUtil.swap(data,l,r);  gnkeJ}K  
SortUtil.swap(data,l,j); /i dI-  
eso-{W,D  
if((l-i)>THRESHOLD){ ,zuS)?  
stack[++top]=i; "TP~TjXfq  
stack[++top]=l-1; g!.piG|  
} C>'G?  
if((j-l)>THRESHOLD){ ;B;@MD,B  
stack[++top]=l+1; [W*M#00_&4  
stack[++top]=j; C4qK52'2s  
} spTz}p^\O  
+'Y?K]zbt  
} 5JEOLPS  
file://new InsertSort().sort(data); 5rfDm  
insertSort(data); J[05T1  
} Rc3!u^?u  
/** 4x}U+1B  
* @param data cIQbu#[@  
*/ 8AuE:=?,,  
private void insertSort(int[] data) { MGq\\hLD\-  
int temp; ]R>NmjAI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _BY+Tfol  
} 4JU 2x  
} z]SEPYq:  
} *>"NUHq  
%6%mf>Guf  
} }K@m4`T  
)-o jm$  
归并排序: NMfHrYHbh  
YK[2KTlo  
package org.rut.util.algorithm.support; sVBr6 !v=  
xJAQ'ANr  
import org.rut.util.algorithm.SortUtil; kI9I{ &J&  
}!{R;,5/n  
/** \<(EV,m2  
* @author treeroot n$XEazUb0N  
* @since 2006-2-2 :4-,Ru1C"  
* @version 1.0 S-}c_zbl;  
*/ ,*dLE   
public class MergeSort implements SortUtil.Sort{ 1pg#@h[|t  
\q*-9_M  
/* (non-Javadoc) jl>TZ)4}V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qu,R6G  
*/ +lfO4^V  
public void sort(int[] data) { z?Ok'LX  
int[] temp=new int[data.length]; mj?Gc  
mergeSort(data,temp,0,data.length-1); ~;]kqYIJ  
} |1tpXpe  
i-w$-2w  
private void mergeSort(int[] data,int[] temp,int l,int r){ S9r?= K  
int mid=(l+r)/2; P9qIq]M  
if(l==r) return ; I*^t!+q$  
mergeSort(data,temp,l,mid); Xp9I3nd|  
mergeSort(data,temp,mid+1,r); NA/`LaJ  
for(int i=l;i<=r;i++){ ^"D^D`$@  
temp=data; {Q37a=;,  
} NN2mOJ:-  
int i1=l; ZfX$q\7  
int i2=mid+1; UimofFmI%  
for(int cur=l;cur<=r;cur++){ J _dgP[  
if(i1==mid+1) 6pSTw\/6  
data[cur]=temp[i2++]; 49M1^nMvoo  
else if(i2>r) nIr`T^c9c  
data[cur]=temp[i1++]; j`"!G*Vh  
else if(temp[i1] data[cur]=temp[i1++]; #) :.1Z?  
else %cg| KB"l  
data[cur]=temp[i2++]; .{c7 I!8  
} =]-z?O6^`  
} ye=4<b_  
A-:k4] {%P  
} KpYezdPF)  
@XolFOL"f"  
改进后的归并排序: `_1~[t  
pZlsDM/=  
package org.rut.util.algorithm.support; $A9Pi"/*z  
(E)hEQ@8  
import org.rut.util.algorithm.SortUtil; ]vB\yQE  
+a^gC  
/** y]+5Y.Cw$  
* @author treeroot k9OGnCW\  
* @since 2006-2-2 "FA. T7G  
* @version 1.0 >h\u[I$7  
*/ Lo_+W1+  
public class ImprovedMergeSort implements SortUtil.Sort { xx>h J!  
C 'MR=/sd  
private static final int THRESHOLD = 10; 'nGUm[vh  
,lA @C2 c  
/* OqIXFX"  
* (non-Javadoc) 5N $XY@  
* aIFlNS,y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ih/E,B"  
*/ o ?vGI=  
public void sort(int[] data) { Q17dcgd  
int[] temp=new int[data.length];  |@'O3KA  
mergeSort(data,temp,0,data.length-1); /P@%{y  
} cZ?$_;=  
3k9n*jY0  
private void mergeSort(int[] data, int[] temp, int l, int r) { ap )B%9  
int i, j, k; Uzzm2OS`  
int mid = (l + r) / 2; s$>n U  
if (l == r) <^Vj1s  
return; :=;{w~D  
if ((mid - l) >= THRESHOLD) z8ZQL.z%h  
mergeSort(data, temp, l, mid); o zn&>k  
else ceE]^X;p  
insertSort(data, l, mid - l + 1); c?HUW  
if ((r - mid) > THRESHOLD) ^@AyC"K  
mergeSort(data, temp, mid + 1, r); RYEZ'<  
else I:iMRvp  
insertSort(data, mid + 1, r - mid); N4C7I1ihq  
=n"kgn  
for (i = l; i <= mid; i++) { |EX=Rj*  
temp = data; KH;~VR8"/  
} O6G'!h\F  
for (j = 1; j <= r - mid; j++) { ]$Z:^" JS3  
temp[r - j + 1] = data[j + mid]; s2G9}i{  
} N$]er'`  
int a = temp[l]; \\<=J[R.M  
int b = temp[r];  &Q~W{.  
for (i = l, j = r, k = l; k <= r; k++) { D?1fY!C:r  
if (a < b) { ft(o-f7,  
data[k] = temp[i++]; +m%%Bz>  
a = temp; Icrnu}pl_  
} else { N7J?S~x  
data[k] = temp[j--]; 8^ f:-5  
b = temp[j]; {:uv}4Z  
} BNNM$.ZIQ  
} rnj$u-8  
} u3+B/ 5x  
}psRgF  
/** dJ6fPB|k  
* @param data 0,t%us/q  
* @param l '^_u5Y]  
* @param i 7:u+cv  
*/ hOAZvrfQ4  
private void insertSort(int[] data, int start, int len) { ALTOi?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +_i{4Iz~p  
} +n;nvf}(  
} dn- [Gnde  
} f<@!{y 2Xe  
} ^-~JkW'z  
? x #K:a?  
堆排序: zW%Em81Wd  
%DKFF4k  
package org.rut.util.algorithm.support; Yn }Gj'  
Re8x!e'>  
import org.rut.util.algorithm.SortUtil; !Rl|o^Vw>{  
NAvR^"I~  
/** !|&|%x6@  
* @author treeroot *tF~CG$r  
* @since 2006-2-2 wL?Up>fr  
* @version 1.0 o2ggHZe/=@  
*/ Bxm,?=h  
public class HeapSort implements SortUtil.Sort{ (CxA5u1|l  
:uo1QavO@,  
/* (non-Javadoc) $gBQ5Wd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R}=5:)%w  
*/ ?ZRF]\dP]  
public void sort(int[] data) { p5fr}#en  
MaxHeap h=new MaxHeap(); :'Qiwf&  
h.init(data); `sYFQ+D#O  
for(int i=0;i h.remove(); M@A3+ v%K  
System.arraycopy(h.queue,1,data,0,data.length); aDNB~CwZZ  
} ;yt6Yp.6e  
?N<My& E  
private static class MaxHeap{ ;9T}h2^`B  
%f1%9YH  
void init(int[] data){ >s{I@#9  
this.queue=new int[data.length+1]; D9oNYF-V  
for(int i=0;i queue[++size]=data; tbRW6  
fixUp(size); V|MGG  
} |qUGB.Q  
} J;0;oXwJ<  
|NfFe*q0;8  
private int size=0; ^Qs}2%  
'9V/w[mI  
private int[] queue; Q4"\k. ?  
+'?Qph6o,7  
public int get() { | ;tH?E  
return queue[1]; u< BU4c/p  
} -&8( MT*  
nHm}^.B*+  
public void remove() { `$6o*g>:  
SortUtil.swap(queue,1,size--); &n  k)F<  
fixDown(1); Lj1l ]OD  
} ;?2)[a  
file://fixdown cJ96{+  
private void fixDown(int k) { p`Pa;=L  
int j; ~$HB}/  
while ((j = k << 1) <= size) { Y_'ERqQ  
if (j < size %26amp;%26amp; queue[j] j++; n N<N~  
if (queue[k]>queue[j]) file://不用交换 7s|'NTp  
break; I@'[>t  
SortUtil.swap(queue,j,k); 6Xvpk1  
k = j; ]<f)Rf">:`  
} >H;i#!9,  
} FQ< -Wc  
private void fixUp(int k) { 7]h%?W !  
while (k > 1) { ]ZY2\'  
int j = k >> 1; $xbC^ k  
if (queue[j]>queue[k]) 9pp +<c  
break; ;28d7e}  
SortUtil.swap(queue,j,k); *r`=hNr  
k = j; Hy.u6Jt*/  
} A5XMA|2_  
} (0$~T}lH  
Bs~~C8+  
} n1f8jS+'}  
]" 'yf;g  
} @Po5AK3cy  
 q#K{~:  
SortUtil: -N45ni87  
w+br)  
package org.rut.util.algorithm; gmL~n7m:K  
E`IXBI  
import org.rut.util.algorithm.support.BubbleSort; Vm[Rp, "  
import org.rut.util.algorithm.support.HeapSort; .a*?Pal@@  
import org.rut.util.algorithm.support.ImprovedMergeSort; nh} Xu~#_  
import org.rut.util.algorithm.support.ImprovedQuickSort; j_8 YFz5  
import org.rut.util.algorithm.support.InsertSort; Cy~IB [  
import org.rut.util.algorithm.support.MergeSort; o7) y~ ke  
import org.rut.util.algorithm.support.QuickSort; 8 1,N92T5  
import org.rut.util.algorithm.support.SelectionSort; ZoG@"vr2  
import org.rut.util.algorithm.support.ShellSort; 9c>i>Vja!  
zwfft  
/** HXLnjXoe  
* @author treeroot 6>vR5pn  
* @since 2006-2-2 FOTe, F.8  
* @version 1.0 C(N' =-;Kl  
*/ %rW}x[M%w?  
public class SortUtil { my 'nDi  
public final static int INSERT = 1; "<CM 'R  
public final static int BUBBLE = 2; }. &nEi`  
public final static int SELECTION = 3; clE9I<1v  
public final static int SHELL = 4; VeA@HC`?"  
public final static int QUICK = 5; ^)AECn  
public final static int IMPROVED_QUICK = 6; V*p[6{U0  
public final static int MERGE = 7; n ay\)  
public final static int IMPROVED_MERGE = 8; HsCL%$k  
public final static int HEAP = 9; voa)V 1A/]  
O=0p}{3l  
public static void sort(int[] data) { 8em'7hR9  
sort(data, IMPROVED_QUICK); L AQ@y-K3  
} 7+jxf[(XQ  
private static String[] name={ Wg-mJu(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r&u1-%%9[  
}; F @PPhzZ  
iQG!-.aX  
private static Sort[] impl=new Sort[]{ tr0b#4  
new InsertSort(), a"#t'\  
new BubbleSort(), ;d?BVe?  
new SelectionSort(), Xb _ V\b0  
new ShellSort(), S:xXD^n#H  
new QuickSort(), Hg#t SE  
new ImprovedQuickSort(), c1H.v^Y5  
new MergeSort(), 2q?/aw ;Z  
new ImprovedMergeSort(), {]CZgqE{  
new HeapSort() vt EfH  
}; CmU@8-1  
W{,fpm  
public static String toString(int algorithm){ Hv/C40uM-  
return name[algorithm-1]; eR!# 1ar  
} JYdb^j2c  
FnGKt\  
public static void sort(int[] data, int algorithm) { 1c$pz:$vX  
impl[algorithm-1].sort(data); BtJkvg(2]  
} j+jC J<  
j*%#~UFw  
public static interface Sort { ndSu-8?L  
public void sort(int[] data); E>fY,*0  
} nW=6nCyvo  
x;mw?B[  
public static void swap(int[] data, int i, int j) { xdSMYH{2A  
int temp = data; z g7Q`  
data = data[j]; YD4I2'E  
data[j] = temp; $Itmm/M  
} "*lx9bvV_  
} WB jJ)vCA.  
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