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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。 GEki34 n0  
插入排序: (T",6xBSG  
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package org.rut.util.algorithm.support; 0EC/l OS  
V j[,o Vt$  
import org.rut.util.algorithm.SortUtil; rwAycW7  
/** lK#uya g  
* @author treeroot P> 7PO~E.  
* @since 2006-2-2 U^OR\=G^  
* @version 1.0 Angt=q  
*/ -V||1@ |  
public class InsertSort implements SortUtil.Sort{ VJtRL')  
<"LA70Hkk  
/* (non-Javadoc) B> zQ[e@t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kO,vHg$  
*/ OL623jQX  
public void sort(int[] data) { O{=@c96rl  
int temp; XZ|\|(6Cc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IZxr;\dq6  
} \Pd>$Q  
} 7#9fcfL  
} ~8[`(/hj  
}`uq:y  
} d ewN\  
-nB. .q  
冒泡排序: h9+ 7 6  
<{.pYrn  
package org.rut.util.algorithm.support; :) T#.(mR  
wgZ6|)!0  
import org.rut.util.algorithm.SortUtil; IZZ $p{  
kyUG+M  
/** ~&+8m=   
* @author treeroot 4TaHS!9  
* @since 2006-2-2 szy2"~hm  
* @version 1.0 {CGk9g" `  
*/ 'Y>@t6E4  
public class BubbleSort implements SortUtil.Sort{ `(@{t:L  
w#;y  
/* (non-Javadoc) p1,.f&(f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z-`4DlJUS  
*/ IVG77+O# }  
public void sort(int[] data) { /ASpAl[J  
int temp; [uu<aRAg3O  
for(int i=0;i for(int j=data.length-1;j>i;j--){ zB+zw\ncN  
if(data[j] SortUtil.swap(data,j,j-1); @G=_nZxv  
} YU1z\pK  
} f7 zGz  
} ;7g~4Uv4}  
} Gk<6+.c~  
4pFoSs?\  
} "%+9p6/  
6+yA4pRSd  
选择排序: R%;dt<Dh  
Q% J!  
package org.rut.util.algorithm.support; <GoZ>  
.IORvP-M&  
import org.rut.util.algorithm.SortUtil; f_ > lz  
c)17[9"  
/** p 4lB#  
* @author treeroot +InFv" wt  
* @since 2006-2-2 4J2C# Cs  
* @version 1.0 Oa7jLz'i  
*/ uq@_DPA7  
public class SelectionSort implements SortUtil.Sort { 4-q8:5  
_MUSXB'  
/* 2;YL+v2  
* (non-Javadoc) E)( Rhvij  
* ,}$[;$ye  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +K"d\<  
*/ 2sT\+C&H  
public void sort(int[] data) { 3F9AnS  
int temp; !ziO1U  
for (int i = 0; i < data.length; i++) { B%KfB VC  
int lowIndex = i; 4NmLbM&C8  
for (int j = data.length - 1; j > i; j--) { h7>`:~  
if (data[j] < data[lowIndex]) { ~01Fp;L/  
lowIndex = j; (Bu-o((N@0  
} i8` 0-  
} f.Ms3))  
SortUtil.swap(data,i,lowIndex); ')j@OO3  
} )dI  `yf  
} Y/G~P,9  
n7'X.=o7  
}  76EMS?e  
>3y:cPTM5  
Shell排序: !a9/8U_>XF  
>66v+  
package org.rut.util.algorithm.support; >/DlxYG?  
IVSd,AR7yY  
import org.rut.util.algorithm.SortUtil; YRJw,xl  
b`DPf@p^kc  
/** x=VLRh%Gvl  
* @author treeroot R8fB 8 )  
* @since 2006-2-2 7cZ(gdQ/  
* @version 1.0 9K_p4 mq  
*/ ~_"/\; 1  
public class ShellSort implements SortUtil.Sort{ [xg& `x9,.  
lag%} ^  
/* (non-Javadoc) $oH?7sj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B}Sl1)E  
*/ O\)rp!i  
public void sort(int[] data) { ?-9It|R  
for(int i=data.length/2;i>2;i/=2){ 3X}>_tj  
for(int j=0;j insertSort(data,j,i); M`.v/UQn  
} w:o,mzuXK  
} x<[W9Z'~?9  
insertSort(data,0,1); ]"4\]_?r  
} %PxJnMb?  
I?%iJ%  
/** 0^&-j.9  
* @param data  #Up X  
* @param j H6]z98  
* @param i c*`= o( S  
*/ ma(E}s  
private void insertSort(int[] data, int start, int inc) { SpiI9)gp  
int temp; \Dr?}D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /l$>W<}@  
} <GRrw  
} sc &S0K  
} B]|"ePj-  
 oN7JNMT  
} v6`TbIq%  
'"14(BvW  
快速排序: 0'4V*Y  
<hSrx7o  
package org.rut.util.algorithm.support; \1b!I)T9  
q\a'pp9d  
import org.rut.util.algorithm.SortUtil; Ud[Zv?tA:  
.YcI .  
/** ^+zhzfJ  
* @author treeroot or{X{_X7  
* @since 2006-2-2 maR5hgWCHe  
* @version 1.0 beCTOmC  
*/ O+Qt8,  
public class QuickSort implements SortUtil.Sort{ \<K@t=/ 6  
a+Z95~*sZ"  
/* (non-Javadoc) (R)(%I1Oz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^+20e3 ~Y  
*/ 8rx"D`{|  
public void sort(int[] data) { Ot#O];3  
quickSort(data,0,data.length-1); t^zmv PDK  
} 4#^?-6  
private void quickSort(int[] data,int i,int j){ l3C%`[MB  
int pivotIndex=(i+j)/2; qFD#D_O6  
file://swap "]M]pR/j  
SortUtil.swap(data,pivotIndex,j); W{!GL  
B5Y 3GWhrx  
int k=partition(data,i-1,j,data[j]); 6(uK5eD(!n  
SortUtil.swap(data,k,j); (d2|r)O  
if((k-i)>1) quickSort(data,i,k-1); Y}pCBw  
if((j-k)>1) quickSort(data,k+1,j); v2uyn  
7jL3mI;n%;  
} E1uyMh-dy  
/** bEJz>oyW"  
* @param data [j]3='2}G  
* @param i M{ mdh\  
* @param j G$B( AWL  
* @return :"4Pr/}rT  
*/ gI SP .  
private int partition(int[] data, int l, int r,int pivot) { 2HemPth  
do{ ,#FK3;U  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D< h+r?  
SortUtil.swap(data,l,r); x!08FL)  
} ~K-c-Zs#z  
while(l SortUtil.swap(data,l,r); 5uU.K3G7  
return l; [o0Z; }fU  
} g5 J[ut  
i]@QxzCSF  
} ymxYE#q  
"#a_--"k9  
改进后的快速排序: xA-u%Vf7@  
kt ILKpHt"  
package org.rut.util.algorithm.support; UE[5Bw?4X  
lo%:$2*'p  
import org.rut.util.algorithm.SortUtil; w,t>M_( N  
>J]^Rgn>  
/** 8Q%rBl.  
* @author treeroot &F*L=Ng  
* @since 2006-2-2 Uo!#p'<w)p  
* @version 1.0 c<`Z[EY(t  
*/ pa6.Tp>  
public class ImprovedQuickSort implements SortUtil.Sort { 19u'{/Y"  
~e ,D`Lv  
private static int MAX_STACK_SIZE=4096; 8KQ]3Z9p  
private static int THRESHOLD=10; us2X:X)  
/* (non-Javadoc) o<hT/ P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u7oHqo`  
*/ dsx'l0q 'i  
public void sort(int[] data) { G8y:f%I!b  
int[] stack=new int[MAX_STACK_SIZE]; Y R2Q6}xR  
Jv|uI1V  
int top=-1; F3aOKV^  
int pivot; 0jlwL  
int pivotIndex,l,r; hpxqL%r  
E0miX)AG  
stack[++top]=0; -gWqq7O  
stack[++top]=data.length-1; .KA){_jBp  
#sn2Vmi  
while(top>0){ !f\q0Gnl  
int j=stack[top--]; SA| AS<  
int i=stack[top--]; J;K-Pv +  
Fo=hL  
pivotIndex=(i+j)/2; |6%B2I&c  
pivot=data[pivotIndex]; 'Y ZYRFWXM  
\B0,?_i  
SortUtil.swap(data,pivotIndex,j); WW'8&:x  
k}5Sz  
file://partition 5ayM}u%\~  
l=i-1; r+}5;fQJ  
r=j; n( |~z   
do{ !ys82  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4xg7 oo0iJ  
SortUtil.swap(data,l,r); '.sS"QdN  
} y|BRAk&n  
while(l SortUtil.swap(data,l,r); +J^-B}v  
SortUtil.swap(data,l,j); e;y\v/A  
yEnurq%J  
if((l-i)>THRESHOLD){ lzQmD/i*  
stack[++top]=i; . C g2Y  
stack[++top]=l-1; 1ke H1[  
} JF%eC}[d  
if((j-l)>THRESHOLD){ I.[2-~yf  
stack[++top]=l+1; D;pfogK @  
stack[++top]=j; gy Jx>i  
} v&hQ;v  
YceX)  
} h}X^  
file://new InsertSort().sort(data); ? 1OZEzA!  
insertSort(data); /B $9B  
} 2;Ij~~  
/** F__j]}?  
* @param data 7q>Y)*V  
*/ @l7~Zn  
private void insertSort(int[] data) { HA?<j|M  
int temp; _I$\O5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7~2b4"&  
} (vq0Gl  
} i?.7o*w8  
} I Xm}WTgF!  
y;)j  
} wUGSM"~ |  
W 6_~.m"b  
归并排序: 0Q81$% @<  
XYJ7k7zc+Y  
package org.rut.util.algorithm.support; rOt`5_2f  
C%$:Oq  
import org.rut.util.algorithm.SortUtil; VJK?"mX  
:^c ' P<HM  
/** #J 1vN]g  
* @author treeroot FKTdQg|NZ  
* @since 2006-2-2 J}Q4.1WG$  
* @version 1.0 +d7sy0  
*/ n+C]&6-b  
public class MergeSort implements SortUtil.Sort{ qSB]Zm<  
j.? '*?P  
/* (non-Javadoc) *SW.K{{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E8[{U8)[;5  
*/ K%Dksx7ow  
public void sort(int[] data) { i+x$Y)=  
int[] temp=new int[data.length]; G~SgI>Q  
mergeSort(data,temp,0,data.length-1); [^rT: %Z  
} X @;o<2^  
v8 Q/DJ~  
private void mergeSort(int[] data,int[] temp,int l,int r){ MIblx  
int mid=(l+r)/2; ^6tcB* #A  
if(l==r) return ; l98.Hb7  
mergeSort(data,temp,l,mid); huMNt6P[  
mergeSort(data,temp,mid+1,r); &d"c6il[  
for(int i=l;i<=r;i++){ L/2{}l>D  
temp=data; So&an !  
} zh5$$*\  
int i1=l; zG\g{cB  
int i2=mid+1; 2~:jg1  
for(int cur=l;cur<=r;cur++){ E5-f{Qc  
if(i1==mid+1) 4NY00d/R  
data[cur]=temp[i2++]; vx:MLmZ.  
else if(i2>r) 'z'q)vcr  
data[cur]=temp[i1++]; O}4(v#  
else if(temp[i1] data[cur]=temp[i1++]; 7MRu=Z.-b  
else z:RclDm  
data[cur]=temp[i2++]; +~gqP k  
} _R&}CP  
} !ke_?+ 8sY  
l>l)m-;O  
} aNZJs<3;'D  
 3kAmRU  
改进后的归并排序: ?^F*M#%?  
K k 5 vC{  
package org.rut.util.algorithm.support; H+^93  
4'&j<Ah[#  
import org.rut.util.algorithm.SortUtil; ]zGgx07d  
^%)H;  
/** oSmv  (O  
* @author treeroot tc go 'V  
* @since 2006-2-2 $U,`M"  
* @version 1.0 8vzjPWu  
*/ eY3l^Su1  
public class ImprovedMergeSort implements SortUtil.Sort { 3|$>2IRq  
1!u}~E_   
private static final int THRESHOLD = 10; ',?9\xEB  
Q o}&2m  
/* a&>Tk%  
* (non-Javadoc) q3+G  
* 2k\i/i/Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3j{VpacZY  
*/ ]1A"l!yf  
public void sort(int[] data) { 'b#`)w@/=  
int[] temp=new int[data.length]; 6`sOhVD  
mergeSort(data,temp,0,data.length-1); K<@gU\-!  
} #St=%!  
#+mt}w/  
private void mergeSort(int[] data, int[] temp, int l, int r) { w28!Yj1Q  
int i, j, k; NGl/F{<  
int mid = (l + r) / 2; TW 2OT }  
if (l == r) MA\^<x_?L}  
return; 71AR)6<R  
if ((mid - l) >= THRESHOLD) ;DMv?-H  
mergeSort(data, temp, l, mid); yN* H IN  
else }E=:k&IDPB  
insertSort(data, l, mid - l + 1); D`nW9i7  
if ((r - mid) > THRESHOLD) Yg 8AMi  
mergeSort(data, temp, mid + 1, r); 2ckAJcpEb/  
else Of)EBa<5^  
insertSort(data, mid + 1, r - mid); v 4@=>L  
1<hj3  
for (i = l; i <= mid; i++) { s?;rP,{:p  
temp = data; b9M.p*!  
} Q'f!392|  
for (j = 1; j <= r - mid; j++) { 1WGcv O)<  
temp[r - j + 1] = data[j + mid]; kcy?;b;z  
} &^ECQ  
int a = temp[l]; X[L6Av  
int b = temp[r]; ISHNeO8  
for (i = l, j = r, k = l; k <= r; k++) { |ITSd%`3_  
if (a < b) { z^s40707x  
data[k] = temp[i++]; }-3| v<d  
a = temp; uzf@49m]m  
} else { g8 (zvG;Y  
data[k] = temp[j--]; |_&Tu#er3  
b = temp[j]; e:9CD-  
} k+xj 2)d7  
} O'5d6m  
} `aY{$>$S  
ld~8g,  
/** Lod$&k@@  
* @param data q 6Q;9,  
* @param l ~z)diF<  
* @param i :t &ib}v  
*/ R|PFGhi6"A  
private void insertSort(int[] data, int start, int len) { p5<2tSD  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (2H e]M\  
} TNs0^h)  
} [@Hv,  
} auOYi<<>W  
} VKtrSY}6T  
8'=8!V  
堆排序: @Q:5{?  
NTRw:'  
package org.rut.util.algorithm.support; N2yxli  
=Qt08,.bW  
import org.rut.util.algorithm.SortUtil; gi::?ET/.  
\>0F{-cR$  
/** pg3B^  
* @author treeroot 6d~[My  
* @since 2006-2-2 /1X0h  
* @version 1.0 &FrW(>2  
*/ ;IhkGPpWP  
public class HeapSort implements SortUtil.Sort{ Fs q=u-= :  
te ?R(&  
/* (non-Javadoc) @kR/=EfS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V1R=`  
*/ . e2qa  
public void sort(int[] data) { ien >Ou  
MaxHeap h=new MaxHeap(); @:$zReS2  
h.init(data); |CME:;{T  
for(int i=0;i h.remove(); lf3:Z5*&>  
System.arraycopy(h.queue,1,data,0,data.length); iqecm]Z0  
} (5@9j  
8+Lig  
private static class MaxHeap{ 5TlPs_o  
'>:mEXK}w  
void init(int[] data){ sa\v9  
this.queue=new int[data.length+1]; xwxMVp`|o  
for(int i=0;i queue[++size]=data; yb BLBJb  
fixUp(size); XcJ'w  
} O@U[S.IK  
} ?9qA"5  
~__]E53F  
private int size=0; y6KI.LWR9  
tN|sHgs  
private int[] queue; Y$3H$F.+  
mq$mB1$3u  
public int get() { CFJ F}aW  
return queue[1]; zn5  
} x1)G!i  
O`e0r%SJ  
public void remove() { DJ"O`qNV3  
SortUtil.swap(queue,1,size--); t?^C9(;6  
fixDown(1); sMAc+9G9k  
} h tbN7B(  
file://fixdown WXj}gL`  
private void fixDown(int k) { DKL< "#.7  
int j; L|G!of[8n  
while ((j = k << 1) <= size) { kzCD>m  
if (j < size %26amp;%26amp; queue[j] j++; |Ia3bV W  
if (queue[k]>queue[j]) file://不用交换 _%Ay\4H^\  
break; R4,j  
SortUtil.swap(queue,j,k); h'wOslyFa  
k = j; YIA}F1:  
} wC@5[e$  
} bu"R2~sb  
private void fixUp(int k) { TRG(W^<F  
while (k > 1) { tBe)#-O  
int j = k >> 1; M-KjRl  
if (queue[j]>queue[k]) 8;7Y}c  
break; v#0R   
SortUtil.swap(queue,j,k); q#B^yk|Y  
k = j; >'eOzMBn  
} b?h9G3J_a  
} WSfla~-'F  
^=Rqa \;  
} .)^@[yrkz  
0A[p3xE\  
} &)L2a)  
s)%RmsdL  
SortUtil: 07-S%L7Z  
Uh}n'Xd#{}  
package org.rut.util.algorithm; eW)(u$C|qL  
KU[eY}   
import org.rut.util.algorithm.support.BubbleSort; 6~\z]LZ  
import org.rut.util.algorithm.support.HeapSort; uf,4GPo,  
import org.rut.util.algorithm.support.ImprovedMergeSort; N$J)Ow  
import org.rut.util.algorithm.support.ImprovedQuickSort; T{u!4Yu  
import org.rut.util.algorithm.support.InsertSort; dwks"5l  
import org.rut.util.algorithm.support.MergeSort; LH.. 8nfl  
import org.rut.util.algorithm.support.QuickSort; =tl[?6  
import org.rut.util.algorithm.support.SelectionSort; s}A)sBsaP3  
import org.rut.util.algorithm.support.ShellSort; W#|]m=2W  
?}sh@;]*h  
/** yG58?5\9  
* @author treeroot #5O'XH5_  
* @since 2006-2-2 V%&t'H{  
* @version 1.0 -CW&!oW  
*/ ^z3-$98=A  
public class SortUtil { Ltpd:c  
public final static int INSERT = 1; C,C%1  
public final static int BUBBLE = 2; qOz,iR?}  
public final static int SELECTION = 3; F?'=iY<h  
public final static int SHELL = 4; 1QM*oj:  
public final static int QUICK = 5; J=>?D@K  
public final static int IMPROVED_QUICK = 6; qWe1`.o  
public final static int MERGE = 7; CtVY;eG  
public final static int IMPROVED_MERGE = 8; 0B)l"$W[)/  
public final static int HEAP = 9; #"d.D7nA  
d -6[\S#  
public static void sort(int[] data) { w3:WvA5jt  
sort(data, IMPROVED_QUICK); DHGv< F@  
} { 'Hi_b3  
private static String[] name={ Fa^5.p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |E!()j=  
}; IXt2R~b  
9"2.2li5$  
private static Sort[] impl=new Sort[]{ ~u1ox_v`%(  
new InsertSort(), V ?3>hQtB  
new BubbleSort(), a_I!2w<I  
new SelectionSort(), a8aEZ724  
new ShellSort(), qVC_K/w 7  
new QuickSort(), boo,KhW'Y  
new ImprovedQuickSort(), TCp!4-~,  
new MergeSort(), a&)0_i:r  
new ImprovedMergeSort(), "s2?cQv{#  
new HeapSort() c"t1E-Nsk  
}; 4vTO  #F  
k|-`d  
public static String toString(int algorithm){ c\UVMyE  
return name[algorithm-1]; } gyJaMA  
} VB*N;bM^  
]CH@ T9d5V  
public static void sort(int[] data, int algorithm) { v vlfL*f  
impl[algorithm-1].sort(data); {6)fZpd)@  
} ?ECmPS1  
T^N Y|Y/  
public static interface Sort { H ~1laV  
public void sort(int[] data); >b,o yM  
} dN;kYWRK  
NUb^!E"  
public static void swap(int[] data, int i, int j) { tx&>Eo  
int temp = data; B{a:cz>0<  
data = data[j]; {f#{NA5  
data[j] = temp; ,Ihuo5>/z  
} [6BL C{2  
} /7*jH2  
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