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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。 5 ba e-  
插入排序: N {~P}Sw  
9D Nd} rXO  
package org.rut.util.algorithm.support; (wuciKQ  
p*)I QM<B  
import org.rut.util.algorithm.SortUtil; c~O Lr  
/** TUz4-Pd  
* @author treeroot M@P%k`6C  
* @since 2006-2-2 {Z7ixc523  
* @version 1.0 $(+xhn(O  
*/ K0>+-p oL  
public class InsertSort implements SortUtil.Sort{ 8 aIqc  
%P M#gnt@  
/* (non-Javadoc) 9#m3<oSJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #/jug[wf*!  
*/ X d o\DQn  
public void sort(int[] data) { ?Z_T3/ f  
int temp; Kh[l};/F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F\^8k/0  
} SDV#p];u  
} LMx/0  
} $v[mIR  
S89j:KRXH%  
} 3 o$zT9j  
+RJKJ:W  
冒泡排序: WJu(,zM?G  
5S2 j5M00  
package org.rut.util.algorithm.support; ]z5hTY  
rMHh!)^#W  
import org.rut.util.algorithm.SortUtil; 9(O eH7  
d(TN(6g@  
/** B@NBN&Fr  
* @author treeroot  }( CYok  
* @since 2006-2-2 HfgTc h  
* @version 1.0 1#%H!GKvTU  
*/ ot[ZFF\  
public class BubbleSort implements SortUtil.Sort{ AIY 1sSK  
c*.  
/* (non-Javadoc) LT o5v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F8dr-"G  
*/ 8>W52~^fU  
public void sort(int[] data) { leb/D>y  
int temp; !=PH5jTY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @TD=or .&  
if(data[j] SortUtil.swap(data,j,j-1); O39   
} s~2o<#  
} 7<*0fy5nn  
} _z8"r&  
} LAo$AiTUR{  
[Z"Z5e`  
} /*{'p!?  
|>.MH  
选择排序: @'):rFr@F  
3<"j/9;K'  
package org.rut.util.algorithm.support; IN<nZ?D#  
Xwdcy J!  
import org.rut.util.algorithm.SortUtil; i&^JG/a  
{Ji&rk}NP  
/** )B"{B1(  
* @author treeroot 2uN3:_w  
* @since 2006-2-2 DbLo{mFEIj  
* @version 1.0 dO%f ;m>#  
*/ R!QR@*N  
public class SelectionSort implements SortUtil.Sort { H"(#Tp ZTE  
O8b#'f~  
/* cW_wIy\]&  
* (non-Javadoc) i%.k{MY  
* bf+C=A)s0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aJf3rHX  
*/ %K')_NS@  
public void sort(int[] data) { n44 T4q  
int temp; EyVu-4L:#  
for (int i = 0; i < data.length; i++) { m BFNg3_  
int lowIndex = i; kP+,x H)1  
for (int j = data.length - 1; j > i; j--) { /;+\6(+X  
if (data[j] < data[lowIndex]) { fdX|t "oz  
lowIndex = j; d/j?.\  
} Uq_lT,  
} iKV|~7nwO  
SortUtil.swap(data,i,lowIndex); YVa,?&i=N  
} w(aj'i  
} L(K 5f7\  
R&;x_4dr^  
} GiX3c^V"1  
nRB3VsL  
Shell排序:  R*2N\2  
JxwKTFU'3O  
package org.rut.util.algorithm.support; !J<Xel {  
21tv(x  
import org.rut.util.algorithm.SortUtil; J&fIW Z  
4-SU\_  
/** Pg:xC9w4  
* @author treeroot &z40l['4bz  
* @since 2006-2-2 0$c(<+D  
* @version 1.0 e ar:`11z  
*/ U)Hc 7% e  
public class ShellSort implements SortUtil.Sort{ X>yDj]*4P  
)Jk$j  
/* (non-Javadoc) "5<!   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ><D2of|  
*/ &8l?$7S"_/  
public void sort(int[] data) { aReJ@  
for(int i=data.length/2;i>2;i/=2){ 0C%IdV%CU  
for(int j=0;j insertSort(data,j,i); lSaX!${R'T  
} XXn3K BIf  
} xtD(tiqh.;  
insertSort(data,0,1); T=u"y;&L  
} p*42 @1,  
,(Zxd4?y  
/** HQ9tvSc  
* @param data 2"Wq=qy\J  
* @param j q MrM^ ~  
* @param i Ul /m]b6-  
*/ \1joW#  
private void insertSort(int[] data, int start, int inc) { 9%|skTgIqH  
int temp; dWkQ NFKF  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'A.5T%n-  
} (>A#|N1U  
} 4GF3.?3  
} " Zhh>cz  
;z9 ,c  
} I50Ly sM  
1c#\CO1l  
快速排序: \9OKf|#j  
!9NF@e'&!  
package org.rut.util.algorithm.support; A32Sdr'D  
?2da6v,t  
import org.rut.util.algorithm.SortUtil; f!yl&ulKU  
5j.@)XXe  
/** WHBGhU  
* @author treeroot X9|*`h<  
* @since 2006-2-2 X)hpbHa  
* @version 1.0 1ow,'FztPt  
*/ tjRw bnT"  
public class QuickSort implements SortUtil.Sort{ X$ \CC18  
mxF+Fp~  
/* (non-Javadoc) PVF :p7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %G 2g @2  
*/ W`vPf  
public void sort(int[] data) { ysG1{NOl  
quickSort(data,0,data.length-1); CKZEX*mPC  
} 0Yq_B+IC  
private void quickSort(int[] data,int i,int j){ eL"'-d+]  
int pivotIndex=(i+j)/2; ~A5NseWCK  
file://swap 1G12FV>M  
SortUtil.swap(data,pivotIndex,j); @fmp2!?6  
i0wBZ i?  
int k=partition(data,i-1,j,data[j]); @d~]3T  
SortUtil.swap(data,k,j); :Ob^b3<t  
if((k-i)>1) quickSort(data,i,k-1); =>c0NT  
if((j-k)>1) quickSort(data,k+1,j); GqsV 6kH  
`3ha~+Goo!  
} 5EQ)pH+  
/** aWRi`poZT  
* @param data @0PWbs$  
* @param i BNjMq  
* @param j H.XyNtJ  
* @return "}1cQ|0a  
*/ km9#lK  
private int partition(int[] data, int l, int r,int pivot) { /KC^x= Xv:  
do{ QeFt WjlqC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C4ktCN  
SortUtil.swap(data,l,r); qonStIP  
} uwI"V|g%a&  
while(l SortUtil.swap(data,l,r); F7jkl4  
return l; =J)-#|eZG  
} SC%HHu\l  
hM!g6\ w  
} zj2y=A| Y  
!m~r0M7  
改进后的快速排序: %pOxt<  
9#1?Pt^{<  
package org.rut.util.algorithm.support; s 7w A3|9  
h@*I(ND<  
import org.rut.util.algorithm.SortUtil; ~a2|W|?  
%hBwc#^  
/** q({-C  
* @author treeroot Tf!6N<dRXR  
* @since 2006-2-2 VByA6^JR  
* @version 1.0 ;Dp*.YJ  
*/ CfS;F  
public class ImprovedQuickSort implements SortUtil.Sort { ewn\'RLZ"@  
W f8@ B#^{  
private static int MAX_STACK_SIZE=4096; q%q+2P>  
private static int THRESHOLD=10; g}Lm;gs!>  
/* (non-Javadoc) LqI&1$#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N-2_kjb!  
*/ B f  y  
public void sort(int[] data) { =&k[qqxg  
int[] stack=new int[MAX_STACK_SIZE]; 9pj6`5Zn@6  
u@:[ dbJ  
int top=-1; K@2"n| S;  
int pivot; Z-4/xi7  
int pivotIndex,l,r; Q6URaw#Yt`  
)i.pE ]!+  
stack[++top]=0; w{_g"X  
stack[++top]=data.length-1; qTbc?S46pt  
_]ZlGq!L  
while(top>0){ j~.tyxOq#  
int j=stack[top--]; 0S>L0qp  
int i=stack[top--]; J,:;\Xhl  
CF-tod  
pivotIndex=(i+j)/2; l?_Fy_fBt  
pivot=data[pivotIndex]; rrEf<A}  
8EJP~bt  
SortUtil.swap(data,pivotIndex,j); |%|Vlu  
x;:jF_  
file://partition & +k*+  
l=i-1; A2L"&dl  
r=j; ?-2s}IJO  
do{ XefmC6X  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); guf&V}&  
SortUtil.swap(data,l,r); ;<T,W[3J  
} Mr4,?Z&`-d  
while(l SortUtil.swap(data,l,r); =vF!  
SortUtil.swap(data,l,j); 0Ba]Zo Z  
h$9ut@I  
if((l-i)>THRESHOLD){ .]4MtG  
stack[++top]=i; 9a+Y )?z  
stack[++top]=l-1; Hq gg*4#  
} y<nPZ<h  
if((j-l)>THRESHOLD){ uJ0'`Q?6R9  
stack[++top]=l+1; nvwf!iU6  
stack[++top]=j; [FF}HWf  
} nTtEv~a_n  
:EYUBtTj  
} jK[*_V  
file://new InsertSort().sort(data); '`<Fys&:  
insertSort(data); #1*7eANfr  
} O<|pw  
/** 5wAKA`p"z  
* @param data ! N!pvK;  
*/ r: >RH,  
private void insertSort(int[] data) { mqsAYzG  
int temp; ^[bFGKE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -O1$jBQ S  
} ]n"RPktx  
} "LkBN0D  
} b+arnKo1fk  
w?8\9\ ;?  
} A1Uy|Dl  
B1U!*yzG6  
归并排序: GNrRc3dr$  
l. cp[  
package org.rut.util.algorithm.support; cvT@`1  
rx9y^E5T`;  
import org.rut.util.algorithm.SortUtil; ?>V>6cDQ  
YjL'GmL<  
/** v ?,@e5GZ  
* @author treeroot I][&*V1  
* @since 2006-2-2 !J@!2S 9  
* @version 1.0 5#X R1#`  
*/ q7soV(P  
public class MergeSort implements SortUtil.Sort{ .$y'>O*$G  
BAvz @H  
/* (non-Javadoc) 88S:E7 $  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y}2Sr-@u  
*/ gE^pOn  
public void sort(int[] data) { 3 4%B0  
int[] temp=new int[data.length]; ^LB]  
mergeSort(data,temp,0,data.length-1); z'1%%.r;FM  
} %*Mr ^=  
:IJ<Mmb  
private void mergeSort(int[] data,int[] temp,int l,int r){ xz.M'az\  
int mid=(l+r)/2; 1+7_L`SB  
if(l==r) return ; 0&Ftx%6%  
mergeSort(data,temp,l,mid); 3< 6h~ek )  
mergeSort(data,temp,mid+1,r); 6:; >id${  
for(int i=l;i<=r;i++){ LCj3{>{/=  
temp=data; /5L\:eX%  
} ?mK&Slh.  
int i1=l; 3pW4Ul@e  
int i2=mid+1; Qmo}esb'(  
for(int cur=l;cur<=r;cur++){ d2gYB qag  
if(i1==mid+1) rMjb,2*rC7  
data[cur]=temp[i2++]; HYT~AO-!  
else if(i2>r) $- %um  
data[cur]=temp[i1++]; EN/t5d  
else if(temp[i1] data[cur]=temp[i1++]; dy5}Jn%L  
else kn$_X4^?  
data[cur]=temp[i2++]; HRM-r~2:-]  
} -gt ?5H h  
} oyk&]'>  
.b<W*4{j0H  
} :wg=H  
0#uB[N  
改进后的归并排序: Qhc; Zl  
J#i7'9g  
package org.rut.util.algorithm.support; xHaz*w1|  
P*|=Z>%[0  
import org.rut.util.algorithm.SortUtil; , .;0xyc  
srO>l ;Vf/  
/** NR8`nc1~  
* @author treeroot P3 =#<Q.  
* @since 2006-2-2 lP]Y^Gz  
* @version 1.0 G'w!Aw s  
*/ I''n1v?N  
public class ImprovedMergeSort implements SortUtil.Sort { 3)?WSOsL :  
| V{ Q  
private static final int THRESHOLD = 10; vp!F6ZwO  
+'olC^?5 }  
/* )YAU|sCAi$  
* (non-Javadoc) h2Th)&Fb>  
* &^HVuYa.0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0pEM0M  
*/ (&v|,.c^)1  
public void sort(int[] data) { ly6zz|c5  
int[] temp=new int[data.length]; 7_)38  
mergeSort(data,temp,0,data.length-1); MY c&  
} (F.w?f4B3  
q%$p56\?3  
private void mergeSort(int[] data, int[] temp, int l, int r) { E7@Gpu,o  
int i, j, k; ~UO}PI`C  
int mid = (l + r) / 2; :@-yK8q's  
if (l == r) !P^Mo> "  
return; \>lA2^E f  
if ((mid - l) >= THRESHOLD) =l*xM/S  
mergeSort(data, temp, l, mid); VzHrKI  
else H6j t[  
insertSort(data, l, mid - l + 1); x lqP%  
if ((r - mid) > THRESHOLD) 2@2d |  
mergeSort(data, temp, mid + 1, r); Dg0rVV6c  
else ;i?2^xe^~c  
insertSort(data, mid + 1, r - mid); /JC1o&z_T  
m&xVlS  
for (i = l; i <= mid; i++) { ]Z6? m  
temp = data; S`FIb'J  
} v;;3 K*c>  
for (j = 1; j <= r - mid; j++) { ZOa|lB (,  
temp[r - j + 1] = data[j + mid]; iJ8Z^=>  
} )mBYW}} T  
int a = temp[l]; `G`R|B  
int b = temp[r]; leH 7II9  
for (i = l, j = r, k = l; k <= r; k++) { VR&dy|5BO  
if (a < b) { l*&N<Yu  
data[k] = temp[i++]; "qR, V9\  
a = temp; S!z3$@o  
} else { J+ S]Qoz  
data[k] = temp[j--]; rQ]JM  
b = temp[j]; F4z#u2~TC  
} . o /uA  
} HZ Wt>f  
} 6z6\xkr  
NjEi.]L*fX  
/** xYYa%PhIC  
* @param data ?0* [ L  
* @param l "P(obk  
* @param i $rr@3H+  
*/ m26YAcip}  
private void insertSort(int[] data, int start, int len) { +>!nqp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \$Wpt#V  
} '=Lpch2J  
} *kqC^2t  
} t? 6 et1~  
} sw$uZ$$~#  
L{8_6s(:  
堆排序: LOfw #+]d  
<Oh i+a%6  
package org.rut.util.algorithm.support; r#)1/`h  
$,, PF/N8c  
import org.rut.util.algorithm.SortUtil; F5/,S   
; xp-MK  
/** >|kD(}Axf  
* @author treeroot `kQosQV  
* @since 2006-2-2 457{9k  
* @version 1.0 81s }4  
*/ YT(Eh3ID  
public class HeapSort implements SortUtil.Sort{ C]5 kQ1Og  
kV?fie<\)  
/* (non-Javadoc) Bz-jy.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $>O~7Nfst7  
*/ !R\FCAW[x  
public void sort(int[] data) { lbIPtu  
MaxHeap h=new MaxHeap(); XJ3sqcS  
h.init(data); .|R4E  
for(int i=0;i h.remove(); N\|z{vn  
System.arraycopy(h.queue,1,data,0,data.length); ] T]{VB  
} ^&1O:G*"  
|H_WY#  
private static class MaxHeap{ n^ fUKi*;  
YuknZ&Q  
void init(int[] data){ /R=MX>JA;  
this.queue=new int[data.length+1]; ?%Nh4+3N>  
for(int i=0;i queue[++size]=data; [t fB*m5  
fixUp(size); OmBz'sp:  
} -NN=(p!<  
} (iir,Ks2C  
k"&o)*d  
private int size=0; TK\3mrEI  
' :B;!3a0d  
private int[] queue; +c<iVc|  
r\ft{Z<P  
public int get() { /ugyUpyg  
return queue[1]; w($a'&d`0  
} TMPk)N1Ka  
!KK`+ 9/  
public void remove() { Y 2ANt w@  
SortUtil.swap(queue,1,size--); I)FFh%m<}a  
fixDown(1); /^nIOAeE  
} OR~ui[w  
file://fixdown fy"}# 2  
private void fixDown(int k) { C){Q;`M-<  
int j; Sf*v#?  
while ((j = k << 1) <= size) { 13 #ff  
if (j < size %26amp;%26amp; queue[j] j++; ;n(f?RO3X  
if (queue[k]>queue[j]) file://不用交换 Fk3(( n=  
break; P%e7c,  
SortUtil.swap(queue,j,k); = N*Jis  
k = j; * CR#D}F  
} N?vb^?  
} 5<ruN11G  
private void fixUp(int k) { k B]`py!  
while (k > 1) { L7 }nmP>aR  
int j = k >> 1; ; o_0~l=-/  
if (queue[j]>queue[k]) Hm'"I!jyO  
break; %w65)BFQ  
SortUtil.swap(queue,j,k); ye$_=KARP  
k = j; kpn|C 9r  
} ANu>*  
} [h;I)ug[o(  
\~%+)a%%  
} .@OQ$ D<  
Pa3-0dUr  
} !9/`PcNIpy  
Q NMZR  
SortUtil: <>\|hno}  
`Fr ,,Q81\  
package org.rut.util.algorithm; -GPBX?  
iG6]Pr|;e  
import org.rut.util.algorithm.support.BubbleSort; {HEWU<5  
import org.rut.util.algorithm.support.HeapSort; zT,@PIC(  
import org.rut.util.algorithm.support.ImprovedMergeSort; WC~;t4  
import org.rut.util.algorithm.support.ImprovedQuickSort; d0I s|Gs  
import org.rut.util.algorithm.support.InsertSort; S^p b9~  
import org.rut.util.algorithm.support.MergeSort; 4}; @QFT*  
import org.rut.util.algorithm.support.QuickSort; `X@\Zv=}  
import org.rut.util.algorithm.support.SelectionSort; d|NW&PG  
import org.rut.util.algorithm.support.ShellSort;  1}=D  
w CLniCt  
/** z U[pn)pe  
* @author treeroot mgx|5Otg  
* @since 2006-2-2 h76j|1gI  
* @version 1.0 06.%9R{  
*/ Cb{D[  
public class SortUtil { qK%N{ro[{?  
public final static int INSERT = 1; u9S*2'  
public final static int BUBBLE = 2; }NC$Ce  
public final static int SELECTION = 3; Y0,{fw<  
public final static int SHELL = 4; (v/L   
public final static int QUICK = 5; *J[ P#y  
public final static int IMPROVED_QUICK = 6; a[~[l k=7  
public final static int MERGE = 7; &EV%g6  
public final static int IMPROVED_MERGE = 8; s|<n7 =J  
public final static int HEAP = 9; *g+ ZXB  
h 8UhrD<:  
public static void sort(int[] data) { Ro2V-6 /  
sort(data, IMPROVED_QUICK); -"nkC  
} @QmN= X5  
private static String[] name={ PdO"e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cF15Mm2  
}; TzaeE  
5CK\Z'c~!  
private static Sort[] impl=new Sort[]{ wGLMLbj5  
new InsertSort(), G>vK$W$f N  
new BubbleSort(), _WWC8?6 U  
new SelectionSort(), 3 twA5)v  
new ShellSort(), zy$jTqDH  
new QuickSort(), p4z4[=-:  
new ImprovedQuickSort(), 6t;;Fz  
new MergeSort(), X:Z3R0  
new ImprovedMergeSort(), 4Px|:7~wT8  
new HeapSort() i. 6b%  
}; u|IS7>Sm  
+C!GV.q[  
public static String toString(int algorithm){ |E6_TZ#=  
return name[algorithm-1]; kfas4mkc  
} y$7Ys:R~  
%_s)Gw&sq  
public static void sort(int[] data, int algorithm) { <MG&3L.[  
impl[algorithm-1].sort(data); u $-&Im<  
} 2EM6k|l5  
[G8EX3  
public static interface Sort { M4)U [v  
public void sort(int[] data); 9RlJf=Z#H  
} afX|R  
:|V650/  
public static void swap(int[] data, int i, int j) { ?QffSSj[s  
int temp = data; b(N\R_IQ~  
data = data[j]; Zm*d)</>  
data[j] = temp; CJN~p]\  
} bh5D}w  
} =|AYT6z,  
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