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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。 0t/y~TrBY  
插入排序: DG*o w^  
Y"kS!!C>[  
package org.rut.util.algorithm.support; '&:x_WwVrO  
G=!bM(]R~  
import org.rut.util.algorithm.SortUtil; o>;0NF| }  
/** &IEBZB\/+&  
* @author treeroot T{4fa^c2J  
* @since 2006-2-2 ~wf~b zs  
* @version 1.0 NE2sD  
*/ kqigFcz!Y  
public class InsertSort implements SortUtil.Sort{ %[\x%m)  
Z*(! `,.bB  
/* (non-Javadoc) _K}_h\e.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z!C4>,  
*/ G\>\VA  
public void sort(int[] data) { `V):V4!j),  
int temp; uxMy 1oy  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "8iiRzt#  
} O"qa&3t%  
} oB06{/6  
} 0/P-> n~  
W|rFl]~a  
} =R;1vUio  
vYR=TN=Z4  
冒泡排序: ,cy/fW  
_Kl{50}]  
package org.rut.util.algorithm.support; bOSYr<R&  
mGpkM?Y"  
import org.rut.util.algorithm.SortUtil; >)J47j7{c  
h}`&]2|]  
/** Pv %vx U  
* @author treeroot q8 xc70: R  
* @since 2006-2-2 yCkW2p]s,K  
* @version 1.0 $F@L$& ~  
*/ aU.0dsq  
public class BubbleSort implements SortUtil.Sort{ zNr_W[  
76_8e{zbr  
/* (non-Javadoc) }RN=9J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,gL)~6!A  
*/ N 1f~K.e\  
public void sort(int[] data) { .H (}[eG_  
int temp; N<Z)b!o%u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7{+Io  
if(data[j] SortUtil.swap(data,j,j-1); `b#nC[b6|v  
} 9Ajgfy>  
} $Y 4ch ko  
} FQ|LA[~  
} n?e@):  
;TV'PJ  
} %<J(lC9,C  
$, &g AU  
选择排序: :^-HVT)qF  
? W2I1HEy  
package org.rut.util.algorithm.support; "l[ V%f E  
AY/-j$5+?  
import org.rut.util.algorithm.SortUtil; Fe& n,  
9u7n/o&8v6  
/** 8A8xY446)  
* @author treeroot j^$3vj5E[  
* @since 2006-2-2 JM+sHHs  
* @version 1.0 xH`j7qK.  
*/ iZ.&q 6  
public class SelectionSort implements SortUtil.Sort { kf^-m/  
*@G(3 n  
/* 0'%+X|  
* (non-Javadoc) cfC;eRgq~  
* zN)|g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dW{o+9nw  
*/ 76IALJ00V  
public void sort(int[] data) { yNqm]H3<MP  
int temp; !|Xl 8lV`  
for (int i = 0; i < data.length; i++) { :L [YmZ  
int lowIndex = i; )kL` &+#>  
for (int j = data.length - 1; j > i; j--) { Jp.3KA>  
if (data[j] < data[lowIndex]) { >xU72l#5  
lowIndex = j; >d27[%  
} _!C)r*0(  
} vA2,&%jw  
SortUtil.swap(data,i,lowIndex); z%}CB Tm  
} ]cLEuE^&  
} C6D=>%uY  
liCCc;&B;  
} 3D$\y~HU  
0+n&BkS'  
Shell排序: v't6 yud  
c_-" Qo  
package org.rut.util.algorithm.support; , Y g5X  
*fQ ?A|l!x  
import org.rut.util.algorithm.SortUtil; @;m@Luk  
&3 XFg Ho  
/** ^T}}4I_Y  
* @author treeroot N'eQ>2>O@  
* @since 2006-2-2 "9U+h2#]  
* @version 1.0 \sHy.{  
*/ =2;mxJ#o  
public class ShellSort implements SortUtil.Sort{ MfNpQ:]c\  
75\RG+kQ  
/* (non-Javadoc) 4+/fP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x^M5D+o  
*/ ')P2O\YS  
public void sort(int[] data) { j'#jnP*P  
for(int i=data.length/2;i>2;i/=2){ \'s$ZN$k  
for(int j=0;j insertSort(data,j,i); r3[t<xlFf  
} r}_Lb.1]  
} 8u:v:>D.'  
insertSort(data,0,1); n!kk~65|  
} PuCwdTan_  
Y-Ziyy  
/** To#E@Nw  
* @param data LY\ddI*s  
* @param j 0okO+QU,a  
* @param i ;B|^2i1Wi  
*/ #uD)0zdw  
private void insertSort(int[] data, int start, int inc) { (<]\,pP0_  
int temp; u|m[(-`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gJFR1  
} r6F{  
} >+Sv9S  
} RI[7M (  
}J+ ce  
} `uIx/.L  
Qfkh0DX B  
快速排序: TZ&4  
n=<NFkeX  
package org.rut.util.algorithm.support; |dl0B26x  
B^8ZoF  
import org.rut.util.algorithm.SortUtil; LaIW,+  
+ AcKB82  
/** ?o(ZTlT  
* @author treeroot eD*?q7  
* @since 2006-2-2 _" ?c9  
* @version 1.0 };|!Lhl+  
*/ b"ol\&1 #  
public class QuickSort implements SortUtil.Sort{ r,`Z.A  
y'J:?!S,Yu  
/* (non-Javadoc) X[GIOPDx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VZT6;1TD$8  
*/ G*P[z'K=  
public void sort(int[] data) { h.4qlx|  
quickSort(data,0,data.length-1); ysSjc  
} qy7hkq.uX  
private void quickSort(int[] data,int i,int j){ fbh6Ls/  
int pivotIndex=(i+j)/2; + >T7Q`64  
file://swap vh9kwJyT  
SortUtil.swap(data,pivotIndex,j); H$NP1^5!  
Gt^|+[gD  
int k=partition(data,i-1,j,data[j]); Wphe%Of  
SortUtil.swap(data,k,j); \GijNn9ah  
if((k-i)>1) quickSort(data,i,k-1); -:)DX++  
if((j-k)>1) quickSort(data,k+1,j); Nk lz_ ]  
s"I-YFP%c  
} R4#;<)  
/** CTh1+&Pa  
* @param data }Kv h`@CiJ  
* @param i Nd]0ta  
* @param j 4)3g!o ?  
* @return &ui:DZAxj|  
*/ );Tx5Z}  
private int partition(int[] data, int l, int r,int pivot) { [n!$D(|"!V  
do{ 9nT?|n]>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6V'wQqJ  
SortUtil.swap(data,l,r); QRsqPh&-  
} ;Ri 3#*a=  
while(l SortUtil.swap(data,l,r); :`:xP  
return l; RpHpMtvNo/  
} !7A"vTs  
:.C+?$iuX  
} ,|e}Y [  
??%)|nj.  
改进后的快速排序: U>/<6 Wd  
IY];Ss&i  
package org.rut.util.algorithm.support; R<0Fy=z  
R^jlEt\&P  
import org.rut.util.algorithm.SortUtil; GwgFi@itN  
Ak xH  
/** #=X)Jx~  
* @author treeroot ShC_hi  
* @since 2006-2-2 #^5a\XJb  
* @version 1.0 :~\LOKf  
*/ [NQmL=l  
public class ImprovedQuickSort implements SortUtil.Sort { ^c/mj9M#C  
B1|?RfCe  
private static int MAX_STACK_SIZE=4096; Qy4X#wgD  
private static int THRESHOLD=10; 8B}'\e4i  
/* (non-Javadoc) Na\3.:]z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^dFh g_GhF  
*/ s9uL<$,'  
public void sort(int[] data) { C}n'>],p  
int[] stack=new int[MAX_STACK_SIZE]; ~Y\QGuT  
^{),+S  
int top=-1; eeZIa`.sX  
int pivot; 3CA|5A.Pa  
int pivotIndex,l,r; RxlszyE  
Zw2jezP@t  
stack[++top]=0; gE\A9L~b  
stack[++top]=data.length-1; IM@"AD52a  
W;^Rx.W  
while(top>0){ U5|B9%:&  
int j=stack[top--]; G1kDM.L  
int i=stack[top--]; `-~`<#E[  
x}v1X`6b  
pivotIndex=(i+j)/2; &J\B\`  
pivot=data[pivotIndex]; 3Z_t%J5QZ$  
[_j6cj]  
SortUtil.swap(data,pivotIndex,j); :9(3h"  
6,B-:{{e"  
file://partition ?lF mXZy`  
l=i-1; 0('OyH)  
r=j; aL88E  
do{ \s,Iz[0Vfz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f_oq1W)9  
SortUtil.swap(data,l,r); 3}08RU7[!  
} )\8URc|J  
while(l SortUtil.swap(data,l,r); yPSVwe|g  
SortUtil.swap(data,l,j); ^gd<lo g  
|a%B|CX  
if((l-i)>THRESHOLD){ wHA/b.jH  
stack[++top]=i; <#zwKTmK1  
stack[++top]=l-1; XFtOmY  
} zT$0xj8  
if((j-l)>THRESHOLD){ _~juv&  
stack[++top]=l+1; Sbp  
stack[++top]=j; yb69Q#V2  
} k69kv9v@J  
Cy`26[E$S  
} F|,6N/;!W  
file://new InsertSort().sort(data); ldK>HxM%Z  
insertSort(data); _Q> "\_,  
} &j3` )N  
/**  GaHA%  
* @param data K*[9j 0  
*/ BlL|s=dlQV  
private void insertSort(int[] data) { w2k<)3 g~  
int temp; -<xyC8 $^$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P= e4lF.  
} 'c#IMlv  
} h iAxh Y  
} mU>&ql?e  
Jms=YLIAA  
} itw{;j   
)^&,Dj   
归并排序: Jff 79)f  
Bw6L;Vu  
package org.rut.util.algorithm.support; Rl1$?l6Rf  
`ovgWv  
import org.rut.util.algorithm.SortUtil; &D]&UQf  
5qC:yI  
/** JfbKf~g  
* @author treeroot L1rwIOgq^  
* @since 2006-2-2 `{DG;J03[  
* @version 1.0 yji>*XG  
*/ FW_G\W.  
public class MergeSort implements SortUtil.Sort{ Vz'HM$  
UkZ\cc}aC/  
/* (non-Javadoc) 21 ViHV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 %3<~'v[  
*/ vmvFBzLR  
public void sort(int[] data) { V>B'+b+<  
int[] temp=new int[data.length]; k5wi'  
mergeSort(data,temp,0,data.length-1); 4\\.n  
} i=-8@  
WK*S4c  
private void mergeSort(int[] data,int[] temp,int l,int r){ R+d< fe  
int mid=(l+r)/2; w(Gz({l+  
if(l==r) return ; kymn)Ea  
mergeSort(data,temp,l,mid); '[Xl>Z[  
mergeSort(data,temp,mid+1,r); 0potz]}  
for(int i=l;i<=r;i++){ V`[P4k+b   
temp=data; |gW    
} (|dPeix|  
int i1=l; <~N%W#z/  
int i2=mid+1; j AQU~Ol_  
for(int cur=l;cur<=r;cur++){ C-Ig_Nc  
if(i1==mid+1) 7u::5W-q  
data[cur]=temp[i2++]; pr$~8e=c  
else if(i2>r) #MglHQO+  
data[cur]=temp[i1++]; @ ICb Kg:  
else if(temp[i1] data[cur]=temp[i1++]; 0Qp[\ia  
else |0kXCq  
data[cur]=temp[i2++]; Z["BgEJ  
} +TF8WZZF.d  
} PS$k >_=t  
}a^|L"  
} 9#Bx]wy  
(')(d HHW  
改进后的归并排序: 8aZ$5^z  
Pxqiv9D<R  
package org.rut.util.algorithm.support; =-Nsc1&  
;\x~'@  
import org.rut.util.algorithm.SortUtil; HxZ.OZbR  
;SKcbws  
/** LQqfi ~  
* @author treeroot q? 9GrwL8F  
* @since 2006-2-2 ] IS;\~  
* @version 1.0 1[s0Lz  
*/ &wjB{%  
public class ImprovedMergeSort implements SortUtil.Sort { +xZQJeKb  
p,;mYms  
private static final int THRESHOLD = 10; \_ 9rr6^ "  
L,$3Yj  
/* =m9i)Q  
* (non-Javadoc) ) |MJnx9  
* oNIFx5*Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3$_*N(e  
*/ 7}%H2$Do  
public void sort(int[] data) { ybE[B}pOeZ  
int[] temp=new int[data.length]; bAiJn<  
mergeSort(data,temp,0,data.length-1); s"coQ!e1.  
} \(fq8AL?  
r|fO7PD  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5)`h0TK  
int i, j, k; ('4wXD]C  
int mid = (l + r) / 2; ,9\Snn  
if (l == r) K6B4sE  
return; 8teJ*sz  
if ((mid - l) >= THRESHOLD) n=o_1M|  
mergeSort(data, temp, l, mid); Za%LAyT_s  
else qjAh6Q/E`  
insertSort(data, l, mid - l + 1); *ik/p  
if ((r - mid) > THRESHOLD) #tDW!Xv?  
mergeSort(data, temp, mid + 1, r); Y)Tl<  
else 5g>wV  
insertSort(data, mid + 1, r - mid); CTp!di|  
7$7n71o  
for (i = l; i <= mid; i++) { H\#:,s{1  
temp = data; ")%r}:0  
} 3D_"y Z  
for (j = 1; j <= r - mid; j++) { ){ gAj  
temp[r - j + 1] = data[j + mid]; M{E{NK  
} NXI[q 'y  
int a = temp[l]; XYAmJ   
int b = temp[r]; .S7:;%qL6  
for (i = l, j = r, k = l; k <= r; k++) { "SR5wr   
if (a < b) { [PWL<t::c  
data[k] = temp[i++]; kjE*9bUc  
a = temp; Q["t eo]DQ  
} else { >1ZJ{se  
data[k] = temp[j--]; 6P*O&1hv  
b = temp[j]; sS9%3i/>  
} TzKK;(GX  
} WYszk ,E  
} Q7GY3X*kA  
N4wA#\-  
/** =~jA oOC@  
* @param data w z=z?AZW  
* @param l P1V1as  
* @param i ;#/0b{XFj  
*/ S GM!#K  
private void insertSort(int[] data, int start, int len) { 78]gt J  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); JJnYOau  
} P^i.La,  
} E\$C/}T  
} S_\ F  
} &z@~B&O  
nIBFk?)6  
堆排序: >qh?L#Fk  
F8=nhn  
package org.rut.util.algorithm.support; Cv^`&\[SW+  
6ep>hS4A&  
import org.rut.util.algorithm.SortUtil; Fm3t'^SqF  
!9 f4R/ ?  
/** c-8!#~M(  
* @author treeroot z<&m*0WYA  
* @since 2006-2-2 8omC%a}9m  
* @version 1.0 0m)&Y FZ[(  
*/ LchnBtjn  
public class HeapSort implements SortUtil.Sort{ d8OL!Rk  
f/y`  
/* (non-Javadoc) 50n}my'2h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >]?H`>4(  
*/ \ZH&LPAY  
public void sort(int[] data) { b{5K2k&,  
MaxHeap h=new MaxHeap(); E\th%q,mG  
h.init(data); ]'h; {;ug  
for(int i=0;i h.remove(); 8C7Z{@A&#  
System.arraycopy(h.queue,1,data,0,data.length); _Qd,VE 8u  
} P8I*dvu _  
|d}MxS`^  
private static class MaxHeap{ x0Z5zV9  
.C bGDZ  
void init(int[] data){ |vILp/"9=W  
this.queue=new int[data.length+1]; kWW w<cA  
for(int i=0;i queue[++size]=data; >M;u*Go`QO  
fixUp(size); Cifd21v4  
} &`!^Zq vG  
} $nPAm6mH  
(^n*Am;zlH  
private int size=0; thW<   
uk7'K 0j  
private int[] queue; m*e YC  
WsOi,oG@  
public int get() { =? :@  
return queue[1]; e/s(ojDW  
} ]%dnKP~  
:}q\tNY<  
public void remove() { \a|L/9%  
SortUtil.swap(queue,1,size--); pq! %?m]  
fixDown(1); #"f' 7'TE  
} u8vuwbra!  
file://fixdown ZafboqsDL  
private void fixDown(int k) { %0-wpuHc(]  
int j; {`"#yl6"  
while ((j = k << 1) <= size) { Lm%GR[tyQ  
if (j < size %26amp;%26amp; queue[j] j++; w4:\N U  
if (queue[k]>queue[j]) file://不用交换 m~`>`4  
break; - u3e5gW  
SortUtil.swap(queue,j,k); }!d;(/)rb  
k = j; *}! MOqP  
} >-)h|w i  
} %[QV,fD'E  
private void fixUp(int k) { }e]f  
while (k > 1) { 39TT{>?`w  
int j = k >> 1; O'DW5hBL0  
if (queue[j]>queue[k]) lU2c_4  
break; rrBAQY|.  
SortUtil.swap(queue,j,k); KMK`F{  
k = j; 7^:4A'  
} ;LwqTlJ*[L  
} TprtE.mP  
d"Q |I  
} $2#7D* Rx  
NPjv)TN}3  
} SUtf[6  
/Cr/RG:OX  
SortUtil: E~hzh /,34  
slW3qRT\k  
package org.rut.util.algorithm; T-" I9kM  
"ZMkL)'7-  
import org.rut.util.algorithm.support.BubbleSort; ]MTbW=*}ED  
import org.rut.util.algorithm.support.HeapSort; Qx`~g,wk8  
import org.rut.util.algorithm.support.ImprovedMergeSort; !|G(Yg7C  
import org.rut.util.algorithm.support.ImprovedQuickSort; (lH,JX`$a  
import org.rut.util.algorithm.support.InsertSort; USPTpjt8R  
import org.rut.util.algorithm.support.MergeSort; ANMg  
import org.rut.util.algorithm.support.QuickSort; ~H6;I$e[  
import org.rut.util.algorithm.support.SelectionSort; \h{r;#g  
import org.rut.util.algorithm.support.ShellSort; |M~ON=  
%y`7);.q  
/** >_ \<E!j  
* @author treeroot LM l~yqM  
* @since 2006-2-2 =y]$0nh  
* @version 1.0 &%C4Ugo  
*/ ?Dsm~bkX[  
public class SortUtil { 3I=kr  
public final static int INSERT = 1; {G i h&N  
public final static int BUBBLE = 2; W{"XJt_  
public final static int SELECTION = 3; )g1a'G  
public final static int SHELL = 4; _}Ps(_5D  
public final static int QUICK = 5; oQ2KW..q  
public final static int IMPROVED_QUICK = 6; <:;^'x>!  
public final static int MERGE = 7; hfM;/  
public final static int IMPROVED_MERGE = 8; nBLj [  
public final static int HEAP = 9; ]s1 YaNq  
a P()|js  
public static void sort(int[] data) { A.%CAGU5w  
sort(data, IMPROVED_QUICK); B |{I:[  
} 3:CO{=`\7B  
private static String[] name={ "HIXm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" % 4 ~l  
}; :`,3h%  
${&5]!E[>D  
private static Sort[] impl=new Sort[]{ m:CTPzAt  
new InsertSort(), \E4B&!m  
new BubbleSort(), \FzM4-  
new SelectionSort(), 15H6:_+=0  
new ShellSort(), :14i?4F d  
new QuickSort(), L2z2}U=<  
new ImprovedQuickSort(), -V<t-}h.  
new MergeSort(), "4xfrlOc  
new ImprovedMergeSort(), P9Q2gVGAO{  
new HeapSort() w7kJg'X/6  
}; hkL5HzWn  
V6a``i]  
public static String toString(int algorithm){ Q5+_u/  
return name[algorithm-1]; <,%:   
} ~=n#}{/  
pK&I^r   
public static void sort(int[] data, int algorithm) { D&:yMp(  
impl[algorithm-1].sort(data); o4^Fo p  
} @e2}BhB2  
NY B[Zyp  
public static interface Sort { 12`_;[37  
public void sort(int[] data); '3(l-nPiG^  
} \ZXLX'-  
7*H:Ob)9k  
public static void swap(int[] data, int i, int j) { e;95a  
int temp = data; x K%=  
data = data[j]; `k{& /]  
data[j] = temp; \c`oy=qY0  
} Es5p}uh.[Y  
} ra7uU*  
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