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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。 ( 2n>A D_  
插入排序: pk3<|  
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package org.rut.util.algorithm.support; 5i1>I=N  
mqAWL:VvQ7  
import org.rut.util.algorithm.SortUtil; ' )?f{  
/** n1&% e6XhO  
* @author treeroot S<WdZ=8sA  
* @since 2006-2-2 SOi*SwQ8  
* @version 1.0 oNU0 qZ5  
*/ tdSfi<y5I  
public class InsertSort implements SortUtil.Sort{ Ar:*oiU  
!2'jrJGc  
/* (non-Javadoc) -sjd&)~S[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pm\x~3jHs  
*/ -"h;uDz|z  
public void sort(int[] data) { !\"5rNy  
int temp; MV\|e1B}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HaYE9/xS  
} 2#<xAR  
} %d>=+Ds[  
} a(9L,v#?  
A%D7bQ  
} b r^_'1  
rZfN+S,g  
冒泡排序: A Q+]|XYo_  
_-9@qe  
package org.rut.util.algorithm.support; ?}RSwl  
6C]1Q.f;  
import org.rut.util.algorithm.SortUtil; u9}1)9  
B]Y}Hu  
/** bV8!"{  
* @author treeroot z6?)3'  
* @since 2006-2-2 lmxr oHE  
* @version 1.0 -t2+|J*  
*/ -#2)?NkeE  
public class BubbleSort implements SortUtil.Sort{ @:U+9[  
YE=q:Bv  
/* (non-Javadoc) +AHUp)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W0k0$\iX  
*/ <0QH<4  
public void sort(int[] data) { =ZDAeVz3w  
int temp; sm\f0P!rv  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F^5?\  
if(data[j] SortUtil.swap(data,j,j-1); sp5eVAd  
} Tjl:|F8  
} 8&Oa_{1+Q  
} nD)K}4  
} HE'2"t[a  
{iv<w8CU)  
} l411a9o  
O=$~O\}b  
选择排序: n< ud> JIb  
~<k,#^"}X  
package org.rut.util.algorithm.support; <%Ostqj  
i%g#+Gw  
import org.rut.util.algorithm.SortUtil; L dm?JrU  
d8m6B6 CW  
/** ` bdZ/*E  
* @author treeroot .hba*dV  
* @since 2006-2-2 z%e8K(  
* @version 1.0 K,w"_T  
*/ ;w%*M}`5  
public class SelectionSort implements SortUtil.Sort { cFJ-Mkl l  
T[sDVkCbxf  
/* qOUqs'7/]  
* (non-Javadoc) >2Jdq  
* +=mkCU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y;e,Gq`  
*/ ^~$)F_`"  
public void sort(int[] data) { RgGyoZ  
int temp; _x? uU  
for (int i = 0; i < data.length; i++) { ObE,$_ k  
int lowIndex = i; x,otFp  
for (int j = data.length - 1; j > i; j--) { ~,BIf+ \XF  
if (data[j] < data[lowIndex]) { g*F'[Z."  
lowIndex = j; /-qxS <?o  
} :LQ5 u[g$\  
} h~(D@/tB  
SortUtil.swap(data,i,lowIndex); x#Q>J"g  
} )DeA} e ?F  
} >A<bBK#  
vk?skN@  
} <7n4_RlF!  
qpsv i.S  
Shell排序: a?6a b+7#  
qKE:3g35  
package org.rut.util.algorithm.support; 9!Ar`Io2@  
4mHvgnT!WA  
import org.rut.util.algorithm.SortUtil; GG0R}',0  
Q\WC+,_%  
/** DF g,Xa#  
* @author treeroot -CR?<A4mud  
* @since 2006-2-2 /MF! GM  
* @version 1.0 hTM[8 ~<^  
*/ ~O]]N;>72"  
public class ShellSort implements SortUtil.Sort{ V~hlq$jn<Y  
PZm:T+5H  
/* (non-Javadoc) PNA\ TXT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y)$ ;Ax-D  
*/ #."Hh<C  
public void sort(int[] data) { 3` #6ACF  
for(int i=data.length/2;i>2;i/=2){ m1IKVa7-\}  
for(int j=0;j insertSort(data,j,i); 6sE{{,OGB  
} !p[9{U->o;  
} 2PeR   
insertSort(data,0,1); E^rbcGJ  
} \/SQ,*O  
H{AMZyV0/d  
/** E!Zx#XP1  
* @param data 0z[dl Hi  
* @param j k $f Gom  
* @param i ?0 m\(#  
*/ x+h~gckLb  
private void insertSort(int[] data, int start, int inc) { 1$2D O  
int temp; X5]TY]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `$~Rxz Z g  
} Fk6x<^Q<w  
} 8UMF q  
} =fYL}m5E  
PT^c^{V  
} p[@5&_u(z  
< n:}kQTT  
快速排序: Zo}y(N1K}  
v|ck>_" .  
package org.rut.util.algorithm.support; oP2fX_v1x  
!{82D[5  
import org.rut.util.algorithm.SortUtil; +dP L>R  
>^OC{~Az  
/** &%2*Wu;  
* @author treeroot "&/]@)TPz  
* @since 2006-2-2 Qf| U0  
* @version 1.0 8 :o<ry  
*/ b:(-  
public class QuickSort implements SortUtil.Sort{ +hRmO  
7nVRn9Hn  
/* (non-Javadoc) oM2UzB{(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F*Z=<]<+  
*/ $XU5??8  
public void sort(int[] data) { "iM~Hy  
quickSort(data,0,data.length-1); [<,~3oRu  
} t'~/$=9}  
private void quickSort(int[] data,int i,int j){ Lqp8yVO  
int pivotIndex=(i+j)/2; S#b-awk  
file://swap Pe_!?:vF  
SortUtil.swap(data,pivotIndex,j); /{{UP-  
i,nm`Z>u  
int k=partition(data,i-1,j,data[j]); Jj= ;  
SortUtil.swap(data,k,j); 5PIZh<  
if((k-i)>1) quickSort(data,i,k-1); ]u-02g  
if((j-k)>1) quickSort(data,k+1,j); z**hD2R!  
pCu!l#J  
}  8*c3|  
/** 6ATtW+sN]  
* @param data 3loY qeP  
* @param i kJAn4I.l  
* @param j tj*y)28-  
* @return ]O TH"*j  
*/ E_1="&p  
private int partition(int[] data, int l, int r,int pivot) { TS"D]Txs  
do{ {3Y )rY!z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]}mxY vu_i  
SortUtil.swap(data,l,r); GI7=x h  
} '>k{tPi.  
while(l SortUtil.swap(data,l,r); |3{&@7  
return l; \@~UDP]7  
} (5 <^p&  
K?4FT$9G  
} QJW`}`R  
M|[ZpM+  
改进后的快速排序: fIocq  
G2#d $  
package org.rut.util.algorithm.support; Y=*P 8pg  
0fs$#j  
import org.rut.util.algorithm.SortUtil; >qo~d?+  
7 yt=]1  
/** hKlZi!4J  
* @author treeroot ` r']^ ,  
* @since 2006-2-2 Ao7`G':  
* @version 1.0 oA tsUF+a  
*/ b}G24{  
public class ImprovedQuickSort implements SortUtil.Sort { ir:d'g1k  
 ?W0(|9  
private static int MAX_STACK_SIZE=4096; )ZejQ}$  
private static int THRESHOLD=10; sLcFt1  
/* (non-Javadoc) R 4wr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +jqj6O@Tjr  
*/ @ 2_<,;$  
public void sort(int[] data) { aj ~bt-cE  
int[] stack=new int[MAX_STACK_SIZE]; ]bgY6@M  
j}+5vB|0  
int top=-1; [WB{T3j  
int pivot; 33~qgK1>  
int pivotIndex,l,r; S)A'Y]2X  
H<ZU#U0FZf  
stack[++top]=0; (vJ2z =z  
stack[++top]=data.length-1; R[1BfZ6s  
me\cLFw  
while(top>0){ {6d b{ ay_  
int j=stack[top--]; -Y:ROoFOZ  
int i=stack[top--]; DJQglt}~  
8@M'[jT  
pivotIndex=(i+j)/2; N8!TZ~1$  
pivot=data[pivotIndex]; vtMJ@!MN;  
]]cYLaq(  
SortUtil.swap(data,pivotIndex,j); eeUp 1g  
S^cH}-+  
file://partition }wSy  
l=i-1; Hh kN^S,  
r=j;  uu%?K@Qq  
do{ #^&jW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |z^pL1Z]5  
SortUtil.swap(data,l,r); # 4|9Fj??  
} xq!IbVV/h  
while(l SortUtil.swap(data,l,r); Gqyue7;0,  
SortUtil.swap(data,l,j); qd!#t]  
Sd:.KRTu.  
if((l-i)>THRESHOLD){ ]=D5p_A(  
stack[++top]=i; {6xPdUhw  
stack[++top]=l-1; m&R"2t_Z  
} s6=YV0w(  
if((j-l)>THRESHOLD){ LQ-6vrbs  
stack[++top]=l+1; hN(L@0)  
stack[++top]=j; Z,WW]Y,$  
} 3D)b*fPc  
.dI)R40L/\  
} g-yi xU  
file://new InsertSort().sort(data); (Q-I8Y8l8  
insertSort(data); qi+&|80T.  
} Cj&$%sO1  
/** vv 7+ >%  
* @param data hteOh#0{   
*/ 2[dIOb4b  
private void insertSort(int[] data) { g]`bnZ7  
int temp; $`vkw(;t)1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /qxJgoa  
} ,.g}W~S)  
} o&^NwgRCF  
} gKL1c{BV  
[xpQH?  
} M^H90GN)X  
%{STz  
归并排序: C=VIT*=  
00M`%c/  
package org.rut.util.algorithm.support; =s'7$D}0.  
64D%_8#m  
import org.rut.util.algorithm.SortUtil; 4&N$:j<  
{rPk3  
/** DzPs!(5[I  
* @author treeroot A/Khk2-:  
* @since 2006-2-2 h39e)%x1  
* @version 1.0 =w <VT%  
*/ fW~*6ln  
public class MergeSort implements SortUtil.Sort{ *?8RXer  
)&.!3y 660  
/* (non-Javadoc) j 0 Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (5;D7zdA  
*/ /R%^rz'w  
public void sort(int[] data) { V:\]cGA{  
int[] temp=new int[data.length]; 8Inx/>eOI  
mergeSort(data,temp,0,data.length-1); WOO%YU =  
} 5 R*lVUix  
KzkgWMM  
private void mergeSort(int[] data,int[] temp,int l,int r){ g2'x#%ET  
int mid=(l+r)/2; b|ZLX:  
if(l==r) return ; G+yL;G/  
mergeSort(data,temp,l,mid); d,R6` i  
mergeSort(data,temp,mid+1,r); Zu=kT}aGg  
for(int i=l;i<=r;i++){ 6;JP76PD  
temp=data; ozxYH],  
} Z( #Ln  
int i1=l; |mj# 0  
int i2=mid+1; 6wpU6NU  
for(int cur=l;cur<=r;cur++){ b}%g}L D  
if(i1==mid+1) 0 [i+  
data[cur]=temp[i2++]; B~_Spp  
else if(i2>r) >Zdi5') 5  
data[cur]=temp[i1++]; dYyW]nZ&  
else if(temp[i1] data[cur]=temp[i1++]; ~Oh=   
else g+9v$[!  
data[cur]=temp[i2++]; l.7d$8'\  
} IIax gfhZ  
} 5w-JPjH  
zKJ. Tj W  
} _[1^s$  
kV 1vb  
改进后的归并排序: A7(M,4`6  
QUPf *3Oy  
package org.rut.util.algorithm.support; hb! ln7  
1CiA 8  
import org.rut.util.algorithm.SortUtil; S$K}v,8.sr  
.b _?-Fv  
/** W^(Iw%ek  
* @author treeroot o PaZ  
* @since 2006-2-2 wA r~<  
* @version 1.0 ! o^Ic`FhS  
*/ 0l1.O2 -  
public class ImprovedMergeSort implements SortUtil.Sort { u0 BMyH  
-,/3"}<^78  
private static final int THRESHOLD = 10; 9>{t}I d  
&Y=.D:z<  
/* 3`rIV*&_{  
* (non-Javadoc) eKJ:?Lxv;  
* > i`8R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !a4cjc(  
*/ !u%9;>T7  
public void sort(int[] data) { 3"vRK5Bf  
int[] temp=new int[data.length]; Wo2 v5-  
mergeSort(data,temp,0,data.length-1); K>LpN')d  
} 9ET/I$n  
<p)Z/  
private void mergeSort(int[] data, int[] temp, int l, int r) { |1i]L@&  
int i, j, k; :Q=z=`*2w  
int mid = (l + r) / 2; UnjNR[=  
if (l == r) C1D ! V:  
return; {WKOJG+.  
if ((mid - l) >= THRESHOLD) I <xy?{s  
mergeSort(data, temp, l, mid); qM*S*,s  
else CfY7<o1>  
insertSort(data, l, mid - l + 1); O8$~*NFJf  
if ((r - mid) > THRESHOLD) Ft$^x-d  
mergeSort(data, temp, mid + 1, r); Nor`c+,4  
else N Z)b:~a  
insertSort(data, mid + 1, r - mid); &PSTwZd  
yP%o0n/"x  
for (i = l; i <= mid; i++) { 55,=[  
temp = data; 2x6<8J8v*  
} Lxz  
for (j = 1; j <= r - mid; j++) { :4iU^6  
temp[r - j + 1] = data[j + mid]; 7y;u} 1  
}  yIa[yJq  
int a = temp[l]; nIR*_<ow  
int b = temp[r]; +h|K[=l\  
for (i = l, j = r, k = l; k <= r; k++) { H lF}   
if (a < b) { UE{,.s  
data[k] = temp[i++]; U81;7L8  
a = temp; <g*.p@o  
} else { s1Okoxh/!V  
data[k] = temp[j--]; m'SmN{(t  
b = temp[j]; %Dra7B%  
} *i%.{ YH  
} N tO?  
} )X~#n  
^aT;aP^l  
/** Q QT G9s  
* @param data fPOEVmj<  
* @param l ||`qIElAW,  
* @param i VOg/VGJ  
*/ | yS5[?.`  
private void insertSort(int[] data, int start, int len) { }U(\~ =D  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ou? r {$(b  
} 2q/nAQ+  
} XN4oL[pO  
} Et)9 20  
} U|9U(il  
,;7`{Nab  
堆排序: z;U LQ  
U%h7h`=F?  
package org.rut.util.algorithm.support; 70duk:Ri0  
qPqy4V. ;  
import org.rut.util.algorithm.SortUtil; aN:HG)$@  
yB=C5-\F  
/** v;Swo("  
* @author treeroot sE-x"c  
* @since 2006-2-2 xcw%RUC-  
* @version 1.0 9^(HXH_f  
*/ Y:rJK|m  
public class HeapSort implements SortUtil.Sort{ NoJUx['6  
lD9%xCo9(  
/* (non-Javadoc) g)X7FxS,z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HgYc@P*b  
*/ @l)\?IEF@f  
public void sort(int[] data) { (rAiDRQ[  
MaxHeap h=new MaxHeap(); )\D2\1e(c  
h.init(data); W^003*m~~K  
for(int i=0;i h.remove(); Q^[e/U,  
System.arraycopy(h.queue,1,data,0,data.length); FPvuzBJ  
} vlAO z  
4}+xeGA$  
private static class MaxHeap{ zjea4>!A2  
E!dz/.  
void init(int[] data){ /SbSID_a  
this.queue=new int[data.length+1]; {ms,q_Zr  
for(int i=0;i queue[++size]=data; @k_Jl>X  
fixUp(size);  V+peO  
} p(~Y" H  
} yI3Q|731)  
JL?Cnk$!  
private int size=0; 45?*:)l:  
||yXp2  
private int[] queue; R:]/{b4Uq  
gW'P`Oxw  
public int get() { fS5GICx8R  
return queue[1]; hyJ ded&D  
} 79 TPg  
+.S#=  
public void remove() { J 5Wz4`'  
SortUtil.swap(queue,1,size--); j?Cr31  
fixDown(1); mfu*o0   
} g8LT7  
file://fixdown di"C]" ;  
private void fixDown(int k) { Tld1P69(  
int j; P{"  WlJ  
while ((j = k << 1) <= size) { 0[V&8\S~'T  
if (j < size %26amp;%26amp; queue[j] j++; (m<R0  
if (queue[k]>queue[j]) file://不用交换 Y0@'za^y  
break; "kcpA#uD|  
SortUtil.swap(queue,j,k); #.<*; rB  
k = j; o G (0i  
} w 9G_>+?E  
} f0/jwfL  
private void fixUp(int k) { l.XknF  
while (k > 1) { 17WNJ  
int j = k >> 1; 7vi i9Am7  
if (queue[j]>queue[k]) h9w@oRp`~  
break; 44'=;/  
SortUtil.swap(queue,j,k); n33JTqX  
k = j; 1y},9ym  
} ->#y(}  
} c_@XQ&DC`  
T g3:VD  
} <^CYxy  
R#"U/8b>z  
} %T`4!:vy  
q :TZ=bs^  
SortUtil: -@YVe:$%b  
V<7R_}^_7  
package org.rut.util.algorithm; zj~8>QnKk  
Zx}N Fcn  
import org.rut.util.algorithm.support.BubbleSort; Gojl0?  
import org.rut.util.algorithm.support.HeapSort; x?%rx}h  
import org.rut.util.algorithm.support.ImprovedMergeSort; rF Ko E%  
import org.rut.util.algorithm.support.ImprovedQuickSort; AeNyZ[40T  
import org.rut.util.algorithm.support.InsertSort; @o}1n?w  
import org.rut.util.algorithm.support.MergeSort; -s9Y(>  
import org.rut.util.algorithm.support.QuickSort; 1 ;cv-W  
import org.rut.util.algorithm.support.SelectionSort; skk-.9  
import org.rut.util.algorithm.support.ShellSort; Z-N-9E  
Iq4Kgc  
/** s5c! ^,L8  
* @author treeroot d%}crM-KTL  
* @since 2006-2-2 r4;5b s6wm  
* @version 1.0 ^m6k@VM  
*/ Gl?P.BCW.&  
public class SortUtil { !Z#_X@NFc  
public final static int INSERT = 1; v+xgxQGYH  
public final static int BUBBLE = 2; K!IF?iell  
public final static int SELECTION = 3; hKk\Y{wv'  
public final static int SHELL = 4; *23m-  
public final static int QUICK = 5; 1_Dn?G^H  
public final static int IMPROVED_QUICK = 6; 7sQ]w   
public final static int MERGE = 7; /Nj:!! AN  
public final static int IMPROVED_MERGE = 8; Q3B'-BZe  
public final static int HEAP = 9; LP5eFl`|T  
S1}1"y/  
public static void sort(int[] data) { qPFG+~\c  
sort(data, IMPROVED_QUICK); *k3 d^9o#  
} B(4:_ j\2  
private static String[] name={ 5;3c<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "/4s8.dw+u  
}; 3e!3.$4M  
Nw9-pQ  
private static Sort[] impl=new Sort[]{ ,omp F$%  
new InsertSort(), AJ;u&&c4C\  
new BubbleSort(), ka?IX9t\  
new SelectionSort(), 8w{#R{w  
new ShellSort(), xm%[}Dt]  
new QuickSort(), TEaD-mY3  
new ImprovedQuickSort(), -4*'WzWr  
new MergeSort(), q|47;bK'  
new ImprovedMergeSort(), z;fd#N:  
new HeapSort() l }2%?d  
}; %\(y8QV  
-V;0_Nx7p  
public static String toString(int algorithm){ p|bc=`TD  
return name[algorithm-1]; ,<uiitOo  
} l5\B2 +}7  
:$SRG^7md  
public static void sort(int[] data, int algorithm) { ; McIxvj  
impl[algorithm-1].sort(data); r 85Xa'hh  
} ,? 0-=o  
BNL8hK`D  
public static interface Sort { L}e"nzTE6I  
public void sort(int[] data); <B ]i80.  
} Dyouk+08x  
1jUhG2y  
public static void swap(int[] data, int i, int j) { rZ8Y=) e  
int temp = data; (n":] 8}  
data = data[j]; ~uhyROO,G"  
data[j] = temp; wzHjEW  
} %468s7Q[Mi  
} #lBpln9  
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