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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。 ]Y?ZUSCJ  
插入排序: sDgo G  
.yTo)t  
package org.rut.util.algorithm.support;  3k6Dbz  
ZiKO|U@/  
import org.rut.util.algorithm.SortUtil; uHf1b?W  
/** E}w5.1  
* @author treeroot ;gHcDnH)  
* @since 2006-2-2 e"EGqn&!  
* @version 1.0 Qj /H$  
*/ JUGq\b&m  
public class InsertSort implements SortUtil.Sort{ 0"@J*e#  
4Z{R36 {  
/* (non-Javadoc) b[&ri:AC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :L:] 3L  
*/ \A!I ln  
public void sort(int[] data) { NmpNme  
int temp; :O,,fJ<x.O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uUBUUr  
} WM$Z?CN%KB  
} H,;ZFg/v8  
} n~>b}DY  
H^B,b !5i  
} xV`)?hEXFh  
-{?xl*D  
冒泡排序: "{S4YA  
kSge4?&  
package org.rut.util.algorithm.support; !eb{#9S*  
\l[AD-CZPh  
import org.rut.util.algorithm.SortUtil; *mn9CVZ(}M  
XkW@"pf&Fh  
/** iH>JR[A  
* @author treeroot 8PeVHpZ  
* @since 2006-2-2 [=-,i#4  
* @version 1.0 o2YHT \P n  
*/ 9l&G2 o   
public class BubbleSort implements SortUtil.Sort{ |tY6+T}  
ze+S_{  
/* (non-Javadoc) #\="^z6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]t17= Lr?  
*/ 1G(wESe  
public void sort(int[] data) { \ X6y".|-  
int temp; zuJ` 704  
for(int i=0;i for(int j=data.length-1;j>i;j--){ GXv2B%i8  
if(data[j] SortUtil.swap(data,j,j-1); [m x}n+~  
} - 3<&sTR  
} ][OkydE  
} +K=RMqM-8  
} e \kR/<L  
2gvS`+<TP  
} )OlYz!#?  
H?ue!5R#L  
选择排序: (a,`Y.  
0icB2Jm:D}  
package org.rut.util.algorithm.support; &$qIJvMiK  
]/R>nT  
import org.rut.util.algorithm.SortUtil; ]YD qmIW  
D* HK[_5  
/** )B @&q.2B=  
* @author treeroot @X/-p3729  
* @since 2006-2-2 z%6egi>  
* @version 1.0 OWN|W,  
*/ %z @T /  
public class SelectionSort implements SortUtil.Sort { "VsS-b^P  
oY@]&A^ah  
/* m1p% ,  
* (non-Javadoc) el^<M,7!  
* K^I$05idi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )gR3S%Ju  
*/ [h\_yU[ P  
public void sort(int[] data) { 7vH4}S\ q  
int temp; 2NL|_W/  
for (int i = 0; i < data.length; i++) { ;ov}%t>UD  
int lowIndex = i; pAEJ=Te  
for (int j = data.length - 1; j > i; j--) { _B]Bd@<w  
if (data[j] < data[lowIndex]) { 3 }rx(  
lowIndex = j; #)6 bfyi-  
} 4x/u$Ixzh=  
} `Uk jr MO  
SortUtil.swap(data,i,lowIndex); 3bugVJ9 3  
} )4+uM'2%  
} J2`OJsMwWe  
+A_jm!tJS(  
} 1@<>GDB9  
B7'2@+(  
Shell排序: *EtC4sP  
Gg7ZSB 7  
package org.rut.util.algorithm.support; =\<!kJ\yH  
OBPiLCq  
import org.rut.util.algorithm.SortUtil; { lZ<'p  
1T3YFt@&I  
/** 0ENqK2  
* @author treeroot Rk{2ZUeg  
* @since 2006-2-2 #|e5i9l*B  
* @version 1.0 C4C!-12  
*/ pq5bK0N Q  
public class ShellSort implements SortUtil.Sort{ rHtX4;f+><  
+d6Jrd*  
/* (non-Javadoc) sy9YdPPE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Au?(_*/0  
*/ Yr:$)ap  
public void sort(int[] data) { *-_joAWTG  
for(int i=data.length/2;i>2;i/=2){ _lk5\bu  
for(int j=0;j insertSort(data,j,i); |VoYFoiQ  
} Qc:Sf46O  
} a@gm r%C  
insertSort(data,0,1); RKz _GEH)  
} y|D-W>0cX3  
`VOLw*Ci  
/** 3j$,x(ua9  
* @param data VzFzVeJ  
* @param j <gr2k8m6$  
* @param i m9m~2   
*/ h1?.x  
private void insertSort(int[] data, int start, int inc) { -IS?8\ Q<  
int temp; n~&e>_;(.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]jJ4\O`  
} IRDD   
} :&D$Q 4  
} Z@:R'u2Lk  
7)3cq}]O  
} }(if|skau  
E{|n\|  
快速排序: +Sdki::  
$U5$*R@jo[  
package org.rut.util.algorithm.support; X1h*.reFAL  
l' Z `%}R  
import org.rut.util.algorithm.SortUtil; 3_k3U  
N_8L8ds5  
/** [$GQ]Y  
* @author treeroot ?B,B<@='%  
* @since 2006-2-2 s}Sxl0  
* @version 1.0 9!6yo  
*/ @sb00ad2q  
public class QuickSort implements SortUtil.Sort{ /B9jmvj`  
QWxl$%`89<  
/* (non-Javadoc) \A3yM{G~+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7wc{.~+  
*/ z15QFVm  
public void sort(int[] data) { O0<GFL$)&  
quickSort(data,0,data.length-1); ZZl4|  
} EC| b7  
private void quickSort(int[] data,int i,int j){ h!>NS ?X7  
int pivotIndex=(i+j)/2; 5B=Wnau  
file://swap 6MR S0{  
SortUtil.swap(data,pivotIndex,j); ./;*L D  
-Qco4>Z8  
int k=partition(data,i-1,j,data[j]); -?<L"u  
SortUtil.swap(data,k,j); 5Bc)QKh`l|  
if((k-i)>1) quickSort(data,i,k-1); ? &;d)TQ  
if((j-k)>1) quickSort(data,k+1,j); /%GMbO_  
OL"So u4  
} KbV%8nx!!  
/** zoBjrAyD  
* @param data >'zp  
* @param i Y:="vWWG  
* @param j V/-~L]G  
* @return =8fZG t  
*/ @'!61'}f  
private int partition(int[] data, int l, int r,int pivot) { S$I:rbc  
do{ QWGFXy,=1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !bCLi>8  
SortUtil.swap(data,l,r); &9'JHF!l  
} S\UM0G}v  
while(l SortUtil.swap(data,l,r); +nslS:(  
return l; I2=Kq{  
} RsDI7v  
#8d$%F))  
} Qmh*Gh? v  
wbId}!  
改进后的快速排序: WH$ Ls('  
^5~[G%G4  
package org.rut.util.algorithm.support; S.OGLLprp  
$T0|zPK5  
import org.rut.util.algorithm.SortUtil; $rC`)"t  
"]`QQT-{0  
/** DD hc^(  
* @author treeroot j{'@g[HW  
* @since 2006-2-2 gB@Wv9 1  
* @version 1.0 fJC,ubP[5  
*/ 3,B[%!3d  
public class ImprovedQuickSort implements SortUtil.Sort { I1H:h  
#B)`dA0a  
private static int MAX_STACK_SIZE=4096; tgYIM`f  
private static int THRESHOLD=10;  93(  
/* (non-Javadoc) }a_: oR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m"vV=6m|\  
*/ t(MlZ>H  
public void sort(int[] data) { 0,;FiOp  
int[] stack=new int[MAX_STACK_SIZE]; #Y*AGxk  
F'#e]/V1  
int top=-1; ;mb 6i_  
int pivot; |E]YP~h  
int pivotIndex,l,r; } q ? iJ?P  
g `B?bBg  
stack[++top]=0; #z t+U^#)  
stack[++top]=data.length-1; a~~"2LE`  
/aJl0GL4!  
while(top>0){ ,O(XNA(C  
int j=stack[top--]; U%45qCU  
int i=stack[top--]; }H ,A T  
()>\D  
pivotIndex=(i+j)/2; j{P,(-  
pivot=data[pivotIndex]; :7!/FBd  
8LwbOR"  
SortUtil.swap(data,pivotIndex,j); #PA"l` "  
6CU8BDN  
file://partition aTs_5q  
l=i-1; ^HL#)fK2I  
r=j; Rb~Kyy$  
do{ I|O~F e.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FM7N|] m  
SortUtil.swap(data,l,r); "=f*Lk@[  
} <ZrZSt+<  
while(l SortUtil.swap(data,l,r); W^+b gg<.  
SortUtil.swap(data,l,j); =8dCk\/  
R4JO)<'K&  
if((l-i)>THRESHOLD){ l>&)_:\  
stack[++top]=i; a4: PufS  
stack[++top]=l-1; *G~c6B Z  
} a<gzI  
if((j-l)>THRESHOLD){ 9 au)K!hN  
stack[++top]=l+1; km<~H w>Z  
stack[++top]=j; Wu Gm~<NS  
} #G{T(0<F  
  6^: l  
} v @N8v  
file://new InsertSort().sort(data); KQ9:lJKr  
insertSort(data); t8)Fkx#8}  
} 3^su%z_%  
/** f (n{7  
* @param data U0N[~yW(t1  
*/ ]aakEU  
private void insertSort(int[] data) { -G Kelz?h>  
int temp; d$2{_6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "| Q&  
} ;LrKXp  
} {U(h]'  
} $uLzC]  
tc,7yo\".  
} QX]tD4OH  
(I~,&aBr  
归并排序: xZhD6'Zzz  
5^d%+*l;q  
package org.rut.util.algorithm.support; G+g`=7  
Ixec]UOS  
import org.rut.util.algorithm.SortUtil; DU7Ki6  
)v-* WreS  
/** z!L0j +  
* @author treeroot !7 ^He3  
* @since 2006-2-2 ;5%&q6&a  
* @version 1.0 UZAWh R  
*/ f@/qW!o  
public class MergeSort implements SortUtil.Sort{ X"1<G3m4  
eO9nn9lql  
/* (non-Javadoc) ~V|!\CB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "4?hK  
*/ g<dCUIbcQ  
public void sort(int[] data) { ~!nd'{{9  
int[] temp=new int[data.length]; ytC{E_  
mergeSort(data,temp,0,data.length-1); pM7BdMp   
} PvB?57wkF  
Jb$z(?S  
private void mergeSort(int[] data,int[] temp,int l,int r){ P`%ppkzV6  
int mid=(l+r)/2; 2E1TJ.[BS  
if(l==r) return ; =91'.c<  
mergeSort(data,temp,l,mid); |(H|2]b4 =  
mergeSort(data,temp,mid+1,r); S2s-TpjB<  
for(int i=l;i<=r;i++){ &S-& 'ZAY  
temp=data; RYhdf  
} Em]T.'y  
int i1=l; N7jRdT2k%  
int i2=mid+1; CM#EA"9  
for(int cur=l;cur<=r;cur++){ 88*RlxU  
if(i1==mid+1) d!LV@</  
data[cur]=temp[i2++]; ( gFA? aD<  
else if(i2>r) &sNID4FR  
data[cur]=temp[i1++]; aw4+1.xy  
else if(temp[i1] data[cur]=temp[i1++]; `x#~ -  
else GSFT(XX  
data[cur]=temp[i2++]; s+w<!`-  
} Y'HF^jv]R  
} {pg@JA  
0*"j:V  
} J-f0  
#&:nkzd  
改进后的归并排序: 7w$R-Y/E  
[uY 2N h  
package org.rut.util.algorithm.support; 7r<>^j'  
j`GbI0,bT  
import org.rut.util.algorithm.SortUtil; ,6bMf z  
JS:lysu  
/** ppD ~xg]  
* @author treeroot A X#!9-m3  
* @since 2006-2-2 te''sydUS  
* @version 1.0 a?MtY EK2  
*/ UKBMGzu2:  
public class ImprovedMergeSort implements SortUtil.Sort { 1G;Ns] u  
"$'~=' [  
private static final int THRESHOLD = 10; 6K y;1$  
5q#|sVT7R  
/* yk)j;i4@  
* (non-Javadoc) prs<ZxbQb  
* Xda<TX@-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iHn]yv3 #  
*/ _Kj.  
public void sort(int[] data) { c>!J@[,  
int[] temp=new int[data.length]; V<pqc&f .  
mergeSort(data,temp,0,data.length-1); -Mvw'#(0  
} ~.lH)  
DQICD.X6R  
private void mergeSort(int[] data, int[] temp, int l, int r) { *!/#39  
int i, j, k; -]A#G`'  
int mid = (l + r) / 2; .%<&W1  
if (l == r) 4~Pto f@  
return; Ft rw3OxN  
if ((mid - l) >= THRESHOLD) C941 @I  
mergeSort(data, temp, l, mid); 7 tpZE+OX  
else 2ML6Lkk  
insertSort(data, l, mid - l + 1); &NQR*Tn  
if ((r - mid) > THRESHOLD) eM"mP&TTL  
mergeSort(data, temp, mid + 1, r); sN}@b8o@  
else t>sX.=\$  
insertSort(data, mid + 1, r - mid); Lp WEu^j  
L# 1vf  
for (i = l; i <= mid; i++) { S: uEK  
temp = data; SkA'+(  
} XXcf!~uO  
for (j = 1; j <= r - mid; j++) { EXcjF  
temp[r - j + 1] = data[j + mid]; xi\RUAW  
} `VE&Obp[  
int a = temp[l]; P$ef,ZW"  
int b = temp[r]; Hu7zmh5FF  
for (i = l, j = r, k = l; k <= r; k++) { [\ YP8^..  
if (a < b) { =*}Mymhk(  
data[k] = temp[i++]; +|<&#b0Xd  
a = temp; aF"Z!HD  
} else { Hc%\9{zH  
data[k] = temp[j--]; =M#?*e  
b = temp[j]; -b}S3<15@  
} X4G55]D$>  
} 05 Q8`  
} y;Ln ao7i  
pe%)G6@G  
/** Ur(o&,  
* @param data 8#u_+;,p  
* @param l U3K<@r  
* @param i h}>/Z3*  
*/ Kn$1W=B1.  
private void insertSort(int[] data, int start, int len) { ] *VF Ws  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3a}`xCO5  
} mZVOf~9E  
} 51ebE`  
} U(=9&c@]  
} PjW+V`  
c\{}FGC  
堆排序: C'2 =0oou  
97wy;'J[u  
package org.rut.util.algorithm.support; ~+ wamX3  
g Pj0H&,.  
import org.rut.util.algorithm.SortUtil; %=8(B.I!  
2\\3<  
/** @h$0S+?:  
* @author treeroot [(F<|f:n  
* @since 2006-2-2 dd7nO :]  
* @version 1.0 F'$S!K58  
*/ 4`P2FnJ?  
public class HeapSort implements SortUtil.Sort{ O)JUY *&I5  
EJ ~k Z3  
/* (non-Javadoc) ,wi=!KzX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9PqgBq   
*/ U"Hquo  
public void sort(int[] data) { 3t{leuO'  
MaxHeap h=new MaxHeap(); PbHh?iH  
h.init(data);  M .`  
for(int i=0;i h.remove(); K!c@aD:#  
System.arraycopy(h.queue,1,data,0,data.length); |kNGpwpI  
} ls7A5 <  
U.7y8#qf3R  
private static class MaxHeap{ [ky6E*dV`  
{3(.c, q@  
void init(int[] data){ Z;~[@7`  
this.queue=new int[data.length+1]; <ii1nz  
for(int i=0;i queue[++size]=data; E5BgQ5'  
fixUp(size); 'b?.\Bm;  
} |z]2KjF&w-  
} Cm;qDvj+u  
)USC  
private int size=0; ]z=Vc#+!  
L##8+OJ.L  
private int[] queue;  pl,Z  
n`z+ w*  
public int get() { ^%%5  
return queue[1]; >-@ U_p  
} "SU-^z  
e_c;D2' F  
public void remove() { f THun?Vn  
SortUtil.swap(queue,1,size--); ?5v5:U(A  
fixDown(1); {I-a;XBX  
} k gu[!hD1  
file://fixdown nlebFDb7  
private void fixDown(int k) { <j 9Mt=8M  
int j; soq".+Q  
while ((j = k << 1) <= size) { qm}>J^hnB#  
if (j < size %26amp;%26amp; queue[j] j++; l \^nC2  
if (queue[k]>queue[j]) file://不用交换 <VaMUm<2  
break; %|(?!w7  
SortUtil.swap(queue,j,k); C9F+e  
k = j; 90qj6.SQ  
} CSL{Q  
} y /:T(tk$  
private void fixUp(int k) { $C05iD  
while (k > 1) { L=HVdeE  
int j = k >> 1; |^PLZ>  
if (queue[j]>queue[k]) MFH"$t+  
break; WTD49_px  
SortUtil.swap(queue,j,k); k<Tez{<  
k = j; 3Q$'qZw p  
} hygnC`|  
} hiMyFvA4  
3K#mF7)a  
} fcE)V#c"g  
j:e^7|.   
} `N,Vs n"  
_+*/~E  
SortUtil: Ybt_?Q9#]  
?ng14e  
package org.rut.util.algorithm; <m>l-]  
PNJe&q0*  
import org.rut.util.algorithm.support.BubbleSort; f>8B'%]  
import org.rut.util.algorithm.support.HeapSort; !rXcGj(k  
import org.rut.util.algorithm.support.ImprovedMergeSort; >WGP{  
import org.rut.util.algorithm.support.ImprovedQuickSort; kWs+2j  
import org.rut.util.algorithm.support.InsertSort; 9y^kb+  
import org.rut.util.algorithm.support.MergeSort; ?cO8'4 bq  
import org.rut.util.algorithm.support.QuickSort; L8dU (P  
import org.rut.util.algorithm.support.SelectionSort; >Qm<-g  
import org.rut.util.algorithm.support.ShellSort; t[?a @S~6  
o'eI(@{F=  
/** G;Wkm|  
* @author treeroot j6e}7  
* @since 2006-2-2 7rdw`  
* @version 1.0 {x[;5TM  
*/ ("?&p3];b  
public class SortUtil { ;V~rWzKM(  
public final static int INSERT = 1; kG$E tE#  
public final static int BUBBLE = 2; '(*&Ax  
public final static int SELECTION = 3; AbF(MK=i  
public final static int SHELL = 4; &]VQR2J}:  
public final static int QUICK = 5; !{Q:(B#ec  
public final static int IMPROVED_QUICK = 6; {xv?wenE  
public final static int MERGE = 7; CQSpPQA  
public final static int IMPROVED_MERGE = 8; %GX uuE}mX  
public final static int HEAP = 9; RVkU+7  
^`rpf\GX(  
public static void sort(int[] data) { d@4rD}_Z  
sort(data, IMPROVED_QUICK); \TbsoWX  
} +5HnZ?E\  
private static String[] name={ V#NG+U.B  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" m Ztv G,  
}; KZF0rW  
ou'~{-_xd  
private static Sort[] impl=new Sort[]{ VT% KN`l  
new InsertSort(), gMs+?SNHAh  
new BubbleSort(), '%SR.JL  
new SelectionSort(), CGC-"A/W  
new ShellSort(), pcy<2UV  
new QuickSort(), 5{13 V*<  
new ImprovedQuickSort(), <&5m N  
new MergeSort(), yuHZ&e  
new ImprovedMergeSort(), X(k{-|9]  
new HeapSort() KdT[*-  
}; DH:GI1Yu>I  
iuC7Y|  
public static String toString(int algorithm){ 1~2R^#rm  
return name[algorithm-1]; jg [H}  
} sdJ%S*)5G$  
(#!] fF"!x  
public static void sort(int[] data, int algorithm) { |5xYT 'V  
impl[algorithm-1].sort(data); e Om< !H  
} <nWKR,  
9 Uha2o  
public static interface Sort { N] 14  
public void sort(int[] data); ZfPd0 p  
} jt{9e:2%  
>Mvka;T]  
public static void swap(int[] data, int i, int j) { ~x|aoozL  
int temp = data; ~:>AR` 9G  
data = data[j]; #:J: YMv  
data[j] = temp; *@_u4T7|{  
} keLR1qf  
} 7]Al*)  
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