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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|ZL< L  
插入排序: Pj <U|\-?  
NS z }  
package org.rut.util.algorithm.support; oL@-<;zKO  
T<pG$4_  
import org.rut.util.algorithm.SortUtil; F)hj\aHm k  
/** \t7yH]:>@  
* @author treeroot ][S q^5`  
* @since 2006-2-2 6XWNJb  
* @version 1.0 4-.K<-T%D  
*/ ZX:rqc  
public class InsertSort implements SortUtil.Sort{ }4YzP 4  
HXa[0VOx  
/* (non-Javadoc) .g*N +T6O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X>[i<ei  
*/ (0NffM1  
public void sort(int[] data) { gUru=p  
int temp; "5V;~}=S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 60!%^O =  
} jG[Vp b  
} 6/8K2_UeoW  
} (NvjX})eh  
PK2;Ywk`  
} 6h>#;M  
Rsfb?${0G  
冒泡排序: M9W zsWM  
8<C*D".T$  
package org.rut.util.algorithm.support; VhkM{O  
MT&aH~YB  
import org.rut.util.algorithm.SortUtil; #-;W|ib%z  
[Jt}^  
/** Qjfgxy]  
* @author treeroot rQimQ|+  
* @since 2006-2-2 K|Sq_/#+U  
* @version 1.0 *,$5EN  
*/ cuQ!"iH  
public class BubbleSort implements SortUtil.Sort{ &!CVF  
5j`xSG  
/* (non-Javadoc) WY!\^| ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{yw&q[B=  
*/ TF/NA\0c$  
public void sort(int[] data) { U*r54AyP  
int temp; }pMVl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ VC88re`  
if(data[j] SortUtil.swap(data,j,j-1); $z%(He  
} <t"T'\3  
} V6][*.i!9  
} 0A) 0Zw  
} V8M()7uJ  
Gw<D'b)!  
} !l $d^y345  
=PRQ3/?5  
选择排序: ,- AF8BP  
Czjb.c:a.Y  
package org.rut.util.algorithm.support; s=n4'`y1  
^w^e~0 S  
import org.rut.util.algorithm.SortUtil; #<*.{"T  
s?EQ  
/** :VT%d{Vp_  
* @author treeroot g{]6*`/Z  
* @since 2006-2-2 #%;Uh  
* @version 1.0 Nu"v .]Y2  
*/ |eu8;~A  
public class SelectionSort implements SortUtil.Sort { ytIPY7E  
oVpZR$  
/* WoZU} T-  
* (non-Javadoc) ;W?#l$R  
* RK!9(^Ja  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mr)t>4  
*/ h=A  
public void sort(int[] data) { "b hK %N;  
int temp; Nnh\FaI  
for (int i = 0; i < data.length; i++) { NuQ!huh  
int lowIndex = i; s>J5.Z7"'j  
for (int j = data.length - 1; j > i; j--) { F\D iT|?}  
if (data[j] < data[lowIndex]) { VP#KoX85  
lowIndex = j; C.S BJ  
} MI `qzC*%  
} w6V/Xp][U  
SortUtil.swap(data,i,lowIndex); nc;e NB  
} C1D:Xi-  
} y47N(;vy  
\V$qAfP)  
} _Xd"'cXw  
\}jA1oy  
Shell排序: 3*h"B$g!  
lJdBUoO  
package org.rut.util.algorithm.support; DPT6]pl"y  
sjyr9AF  
import org.rut.util.algorithm.SortUtil; K KB+o)*W  
6MVu"0#  
/** vS8& ,wJ!  
* @author treeroot 7%  D4  
* @since 2006-2-2 rE m/Q!  
* @version 1.0 oy8jc];SO  
*/ `> %QCc\  
public class ShellSort implements SortUtil.Sort{ gE6'A  
A r!0GwE+  
/* (non-Javadoc) r'*$'QY-N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w7@`:W  
*/ N#ggT9>X  
public void sort(int[] data) { i3w~&y-  
for(int i=data.length/2;i>2;i/=2){ ^{uHph9ny  
for(int j=0;j insertSort(data,j,i); QJ XP -  
} <<0sv9qw1  
} \\k=N(n  
insertSort(data,0,1); +Hu\b&g  
} G3DgB!  
ov_l)vt  
/** +aOdaNcI  
* @param data %LrOGr  
* @param j L?h?LZnq  
* @param i s0iG |vw  
*/ fxd+0R;f  
private void insertSort(int[] data, int start, int inc) { '[WL8,.Q  
int temp; 9f! M1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |SOLC  
} }MQ:n8  
} Og1-LP|X  
} \U$:/#1Oe  
v[Q)L!J1  
} i#la'ICwJ  
O>h`  
快速排序: I0+6p8,  
%M iv8  
package org.rut.util.algorithm.support; ,-Hj  
"Pwa}{  
import org.rut.util.algorithm.SortUtil; 5GM-*Ak@  
wyy 1M+  
/** K83'`W^  
* @author treeroot D6L+mTN  
* @since 2006-2-2 aZb\uMePK  
* @version 1.0  >:-e  
*/ HEVj K$  
public class QuickSort implements SortUtil.Sort{ "Wj{+ |f  
w^0hVrws=,  
/* (non-Javadoc) u+j\PWOtm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "9_$7.q<y  
*/ 3:iEt (iCI  
public void sort(int[] data) { S"&Gutu3o  
quickSort(data,0,data.length-1); >`AK'K8{M  
} PuJ3#H T  
private void quickSort(int[] data,int i,int j){ #Nh'1@@  
int pivotIndex=(i+j)/2; EnWv9I<  
file://swap )95k3xo  
SortUtil.swap(data,pivotIndex,j); q\@Zf}  
]VjvG};  
int k=partition(data,i-1,j,data[j]); `E$vWZq}  
SortUtil.swap(data,k,j); dx@dnWRT,  
if((k-i)>1) quickSort(data,i,k-1); &G"s !:  
if((j-k)>1) quickSort(data,k+1,j); /0/ouA>+  
PZ|I3z  
} _^& q,S  
/** N-K/jY  
* @param data >=0]7k;  
* @param i T_D3WHp  
* @param j _Q1p_sdg  
* @return ^4fvV\ne_~  
*/ +mWf$+w  
private int partition(int[] data, int l, int r,int pivot) { @S@VsgQ%3Z  
do{ h r];!.Fv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "OenYiz  
SortUtil.swap(data,l,r); xqX3uq  
} 1'o[9-  
while(l SortUtil.swap(data,l,r); [h'u@%N|/  
return l; I D_4M_G  
} 9295:Y| w1  
zcP=+Y)YA  
} c]u ieig0~  
tpGT~Y(  
改进后的快速排序: ye.6tlW  
oks;G([  
package org.rut.util.algorithm.support; @%,~5{Ir  
I(*3n"  
import org.rut.util.algorithm.SortUtil; I,hw0e  
K%dQ; C*?  
/** ],weqs  
* @author treeroot a<&K^M&  
* @since 2006-2-2 Oo :Dt~Ib  
* @version 1.0 d3c.lD)L9  
*/ Tow=B  
public class ImprovedQuickSort implements SortUtil.Sort { Rt?CE jy  
Ca0s m  
private static int MAX_STACK_SIZE=4096; `$/a-K}  
private static int THRESHOLD=10; 2jyWkAP'  
/* (non-Javadoc) f 0H.$UAL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d}Pfj=W  
*/ v7"VH90`!  
public void sort(int[] data) { 56)!&MF  
int[] stack=new int[MAX_STACK_SIZE]; +E</A:|}S  
x[58C+  
int top=-1; nz3*s#k\-  
int pivot; 3/+kjY/  
int pivotIndex,l,r; GY%5N= u  
v^ ^Ibv  
stack[++top]=0; bW=q G  
stack[++top]=data.length-1; b,^ "-r  
TO.b- ;  
while(top>0){ yn\c;Z  
int j=stack[top--]; Ss%Cf6qdWL  
int i=stack[top--]; g)#?$OhP"  
dM;\)jm  
pivotIndex=(i+j)/2; c K\   
pivot=data[pivotIndex]; x eFx!$3  
ee? d ?:L  
SortUtil.swap(data,pivotIndex,j); >8"(go+02  
FygNWI'  
file://partition A M[f  
l=i-1; @4y?XL(n  
r=j; ,cNe-KJk  
do{ ',R%Q0Q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |J!mM<*K  
SortUtil.swap(data,l,r); $sY'=S  
} h\[@J rDa  
while(l SortUtil.swap(data,l,r); `o{ Z;-OF  
SortUtil.swap(data,l,j); -| FHv+  
>UCg3uFj  
if((l-i)>THRESHOLD){ iHhdoY[]  
stack[++top]=i; nook/7]  
stack[++top]=l-1; :k_&Zd j,B  
} C~T ,[U  
if((j-l)>THRESHOLD){ 4*}&nmW  
stack[++top]=l+1; 2A\b-;4EP  
stack[++top]=j; r<ww%2HTS  
} LL e*| :  
71@ eJQ  
} .jD!+wv{9  
file://new InsertSort().sort(data); R%szN.cI  
insertSort(data);  oYN"L  
} _\4#I(  
/** :2KHiT5  
* @param data =H)]HxEEM  
*/ le \f:  
private void insertSort(int[] data) { trDw|WA  
int temp; !Wr<T!T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uZL]mwkj]  
} 4m< ]qw  
}  skl3/!  
} vSHPN|*  
d3q%[[@  
}  a[nSUlT&  
F:m6Mf7L  
归并排序: D=^&?@k<  
d'W2I*Zc<  
package org.rut.util.algorithm.support; _5rKuL  
HVus\s\&y%  
import org.rut.util.algorithm.SortUtil; MU$tX  
 `vH|P  
/** T!,5dt8L  
* @author treeroot Bg),Q8\I  
* @since 2006-2-2 ^mq(j_E.  
* @version 1.0 -7&ywgxl  
*/ )'m;a_r`  
public class MergeSort implements SortUtil.Sort{ }@HgFM"  
ei4LE XQ16  
/* (non-Javadoc) h"ZIh= j@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `R2Iw I&  
*/ ?+EAp"{j  
public void sort(int[] data) { UWO3sZpU  
int[] temp=new int[data.length]; /V*SI!C<f  
mergeSort(data,temp,0,data.length-1); F% n}vA`  
} {LjzkXs  
^>E>\uz0v  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~u$ cX1M  
int mid=(l+r)/2; !U% |pa  
if(l==r) return ; ^>an4UJ t  
mergeSort(data,temp,l,mid); [TA.|7&  
mergeSort(data,temp,mid+1,r); /!0&b?  
for(int i=l;i<=r;i++){ Xb:* KeZq  
temp=data; ?'~u)O(n  
} ufk2zL8y  
int i1=l; = vqJ0!  
int i2=mid+1; Lan|(!aW  
for(int cur=l;cur<=r;cur++){ t)j$lmQn  
if(i1==mid+1) P-B5-Nz  
data[cur]=temp[i2++]; R|*0_!O:[  
else if(i2>r) CtMqE+j^  
data[cur]=temp[i1++]; :oy2mi;  
else if(temp[i1] data[cur]=temp[i1++]; {xg=Ym)  
else We$ n  
data[cur]=temp[i2++]; :PBFFLe  
} ,G0"T~  
} wKi#5k2  
^S`hKv&87  
} 2n3&uvf'TL  
f5F-h0HF`[  
改进后的归并排序: bz>\n"'  
B0yJ9U= Fj  
package org.rut.util.algorithm.support; C5^WJx[  
q>(?Z#sB  
import org.rut.util.algorithm.SortUtil; lt-3OcC  
Y\WQ0'y  
/** 1Z ~C3)T=  
* @author treeroot ?jz\[0)s  
* @since 2006-2-2 \bT0\ (Js\  
* @version 1.0 }*bp4<|  
*/ <eEIR  
public class ImprovedMergeSort implements SortUtil.Sort { MUbKlX  
zlP{1z;nV  
private static final int THRESHOLD = 10; _LZ(HTX~  
gd * b0(  
/* E+i(p+=4  
* (non-Javadoc) 8SRUqe[H]  
* fNi&r0/-t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,ASNa^7/>  
*/ 4v>SXch  
public void sort(int[] data) { gw"SKp!]  
int[] temp=new int[data.length]; w-JWMgY8w  
mergeSort(data,temp,0,data.length-1); [5' HlHK  
} Ba?1q%eG  
pNd`fV#jX  
private void mergeSort(int[] data, int[] temp, int l, int r) {  ^[SW07o~  
int i, j, k; aPlEM_escS  
int mid = (l + r) / 2; uxn+.fA  
if (l == r) iPl,KjGk  
return; <xSh13<  
if ((mid - l) >= THRESHOLD) *~GI-h  
mergeSort(data, temp, l, mid); =c \(]xX  
else f|(9+~K/7&  
insertSort(data, l, mid - l + 1); Il4]1d|  
if ((r - mid) > THRESHOLD) MOh&1]2j5  
mergeSort(data, temp, mid + 1, r); Pqx?0 f)  
else jY\z+lW6A  
insertSort(data, mid + 1, r - mid); >{ {ds--  
t0fgG/f'  
for (i = l; i <= mid; i++) { 41=H&G&  
temp = data; %r.OV_04  
} &I=o1F2B)  
for (j = 1; j <= r - mid; j++) { i/*)1;xsk  
temp[r - j + 1] = data[j + mid]; dH5*%  
} hN K wQ  
int a = temp[l]; EGI$=Y  
int b = temp[r]; _R(ZvsOZ  
for (i = l, j = r, k = l; k <= r; k++) { .lj5pmD  
if (a < b) { :vIJ>6lIR  
data[k] = temp[i++]; <w}^Z}fpk&  
a = temp; .!<yTh  
} else { p4IyKry,  
data[k] = temp[j--]; @{RhO|UR  
b = temp[j]; 3| w$gG;Y  
} Z[VrRT,\c  
} 0xDn!  
} I}u\ov_Su  
0`.&U^dG  
/** |WS@q'  
* @param data l8(9?!C  
* @param l #Tzs9Bkaca  
* @param i ~Y f8,m  
*/ l"[.Q>d  
private void insertSort(int[] data, int start, int len) { E4o{Z+C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4Ia'Yr  
} g$C]ln>"9m  
} +d LUq2  
} &Y@),S9  
} SVwxK/Fci  
DM v;\E~D  
堆排序: zmZU"eWp)  
p:b{>lM  
package org.rut.util.algorithm.support; qF^P\cD  
HOu$14g  
import org.rut.util.algorithm.SortUtil; h #gI1(uL  
+C;;4s)  
/** [4C_iaE  
* @author treeroot 2k=|p@V n~  
* @since 2006-2-2 Has}oe[  
* @version 1.0 ^L.I9a#]  
*/ 2HVqJib4Yn  
public class HeapSort implements SortUtil.Sort{ 03)irq%l;  
rD$5]%Y  
/* (non-Javadoc) kuBtPZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2{WZ?H93a  
*/ vv)w@A:Vn)  
public void sort(int[] data) { y|B HSc3  
MaxHeap h=new MaxHeap(); uPcx6X3]  
h.init(data); p q?# X0  
for(int i=0;i h.remove(); yqK_|7I+  
System.arraycopy(h.queue,1,data,0,data.length); $X:,Q,?  
} indbg d  
@I1*b>X~<  
private static class MaxHeap{ b(mZ/2,B  
< ~CY?  
void init(int[] data){ 4J`-&05O  
this.queue=new int[data.length+1]; K)x6F 15r  
for(int i=0;i queue[++size]=data; nm\f$K>Pg  
fixUp(size); q("l?'  
} 7>@0nHec  
} h*KDZ+{)  
A #SO}c  
private int size=0; c)Ef]E\  
9wc\~5{li  
private int[] queue; =>>Dnp  
f#AuZ]h  
public int get() { :T PG~`k(  
return queue[1]; SF:{PgGMi  
}  w<!&%  
SkipPEhA  
public void remove() { COW lsca  
SortUtil.swap(queue,1,size--); $l.8  
fixDown(1); ;W+1 H !  
} :#sBNy  
file://fixdown %#4;'\'5  
private void fixDown(int k) { ;j;U9-oh  
int j;  WSeiW  
while ((j = k << 1) <= size) { 0 )PZS>  
if (j < size %26amp;%26amp; queue[j] j++; aVV E 2:M  
if (queue[k]>queue[j]) file://不用交换 gjK: a@{  
break; [`h,Ti!m<  
SortUtil.swap(queue,j,k); _{^F8  
k = j; -KbO[b\V  
} 8Dxg6>  
} ( Ygy%O%  
private void fixUp(int k) { *3RD\.jPX  
while (k > 1) { liB~vdqj  
int j = k >> 1; ^cW{%R>XY  
if (queue[j]>queue[k]) =$~x]  
break; xzMpTZQ  
SortUtil.swap(queue,j,k); 2.j0pg .  
k = j; ;CL^2{  
} p8F$vx4,  
} V^.Z&7+E`_  
2&s(:=  
} T|oDJ]\J  
/YwwG;1  
} 26zif  
uGlz|C  
SortUtil: M>RLS/r>d  
23;\l   
package org.rut.util.algorithm; eon(C|S7eK  
Z^A(Q>{e  
import org.rut.util.algorithm.support.BubbleSort; }EfRYE$E  
import org.rut.util.algorithm.support.HeapSort; ou|3%&*"  
import org.rut.util.algorithm.support.ImprovedMergeSort; b[n6L5P5m2  
import org.rut.util.algorithm.support.ImprovedQuickSort; @ohJ'  
import org.rut.util.algorithm.support.InsertSort; '@hnqcqXq  
import org.rut.util.algorithm.support.MergeSort; A-\n"}4  
import org.rut.util.algorithm.support.QuickSort; w+%p4VkA<r  
import org.rut.util.algorithm.support.SelectionSort; Y\1&  Uk  
import org.rut.util.algorithm.support.ShellSort; r 3T#Nv  
M tDJ1I%  
/** J{EK}'  
* @author treeroot iu+H+_  
* @since 2006-2-2 ONcS,oHW  
* @version 1.0 -Vg0J6x  
*/ UU =,Brb  
public class SortUtil { pek5P4W_  
public final static int INSERT = 1; kc2E4i  
public final static int BUBBLE = 2; {;UBW7{  
public final static int SELECTION = 3; OH+2)X  
public final static int SHELL = 4; TSL/zTLDJ  
public final static int QUICK = 5; mp]UUpt  
public final static int IMPROVED_QUICK = 6; #eI` l`}  
public final static int MERGE = 7; +(q r{G?  
public final static int IMPROVED_MERGE = 8; ,qgR+]?({  
public final static int HEAP = 9; Tc;BE  
eLN(NSPoS  
public static void sort(int[] data) { xdsF! Zb  
sort(data, IMPROVED_QUICK); q=BAYZ\`  
} P/9|mYmsq  
private static String[] name={ kA4kQ}q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '_=XfTF  
}; !Nhq)i  
b{e|~v6&  
private static Sort[] impl=new Sort[]{ |TBKsx8  
new InsertSort(), !.{{QwZ  
new BubbleSort(), i6h0_q8 >  
new SelectionSort(), CBx5:}t  
new ShellSort(), | -AR)Smt  
new QuickSort(), c*> SZ'T\  
new ImprovedQuickSort(), N;,N6&veK/  
new MergeSort(), 6 ^p>f:5  
new ImprovedMergeSort(), v".u#G'u  
new HeapSort() n-lDE}K9%B  
}; $J:~jY/J  
w\.z-6G  
public static String toString(int algorithm){ fAR0GOI  
return name[algorithm-1]; TlBu3z'P  
} z1~U#  
Q# $dp  
public static void sort(int[] data, int algorithm) { T^ah'WmNw  
impl[algorithm-1].sort(data); 5HbPS%^.  
} Vuo 8[h>  
{[B`q  
public static interface Sort { iuq%Q\0@w  
public void sort(int[] data); b{JxTT}03  
} Sh5SOYLz  
laFF/g;sRC  
public static void swap(int[] data, int i, int j) { h|=&a0  
int temp = data; J 9k~cz  
data = data[j]; ! XNTk]!  
data[j] = temp; ^Ul *Nm  
} y {1p#  
} nxYp9,c"  
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