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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。 b;XUv4~V  
插入排序: D-<9kBZs  
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package org.rut.util.algorithm.support; 5s'oVO*hW  
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import org.rut.util.algorithm.SortUtil; 8 aHs I(  
/** %@jL? u  
* @author treeroot 5_MqpCL  
* @since 2006-2-2 ~\^h;A'3  
* @version 1.0 dE[nPtstb  
*/ "/&_B  
public class InsertSort implements SortUtil.Sort{ >5Rcj(-&l  
cnR.J  
/* (non-Javadoc) |E YJbL;1%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L-T3{I,3  
*/ RS>;$O_(M  
public void sort(int[] data) { [o0Z; }fU  
int temp; ?!:$Z4G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9svnB@  
} >K2Md*[P3q  
} ?/ @~ d  
} ^K#PcPF-j  
.%(Q*ioDh  
} 'F- wC!  
^" EsBt  
冒泡排序: EN =oA P  
JToc("V  
package org.rut.util.algorithm.support; =D2jJk?AX  
AI|8E8h+D  
import org.rut.util.algorithm.SortUtil; b`=\<u8  
J4Ix\r_  
/** FOFZ/q  
* @author treeroot i+2fWi6Z+  
* @since 2006-2-2 py9HUyr5eZ  
* @version 1.0 rl0sN5n  
*/ B~ o;,}  
public class BubbleSort implements SortUtil.Sort{ >0W:snNK  
)L*6xTa~  
/* (non-Javadoc) gRk%ObJGqm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QeK@ ++EVc  
*/ L@"1d.k_  
public void sort(int[] data) {  f:_\S  
int temp; dQ5_=( 9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nty^De%  
if(data[j] SortUtil.swap(data,j,j-1); )jh4HMvmC  
} PfaBzi9?f  
} &vf%E@<  
} vgc #IEx@  
} FY^[?lj  
&B</^:  
} t(O{IUYM  
f__r " N  
选择排序: : "|M  
x:h0/f  
package org.rut.util.algorithm.support; 1^*M*>&d<  
yEnurq%J  
import org.rut.util.algorithm.SortUtil; jm_b3!J  
HAHv^  
/** }/ p>DMN  
* @author treeroot Z'P>sV  
* @since 2006-2-2 nhfHY-l} 7  
* @version 1.0 /AJ#ngXz  
*/ ;b(*Bh<  
public class SelectionSort implements SortUtil.Sort { `CW I%V  
Osb#<9{}  
/* HA?<j|M  
* (non-Javadoc) E4a`cGb  
* j4ARGkK5B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I Xm}WTgF!  
*/ 5J d7<AO_  
public void sort(int[] data) { OJ (ho&((  
int temp; XYJ7k7zc+Y  
for (int i = 0; i < data.length; i++) { Hm>M}MF3  
int lowIndex = i; BO#XQ,  
for (int j = data.length - 1; j > i; j--) { f^P:eBgpx  
if (data[j] < data[lowIndex]) { N$8do?  
lowIndex = j; PSOW}Y|q  
} K.y2 $b/  
} 'y(;:Kc  
SortUtil.swap(data,i,lowIndex); q5jLK)  
} K%Dksx7ow  
} a J%&Y5L  
6}Se$XMl  
} v8 Q/DJ~  
5XK}8\  
Shell排序: lzJ[`i.  
[I4:R_\  
package org.rut.util.algorithm.support; \+]U1^  
I9sx*'  
import org.rut.util.algorithm.SortUtil; rTBrl[&,q'  
;.Lf9XJ   
/** /%El0X  
* @author treeroot c4]/{!4 Q  
* @since 2006-2-2  .AEOf0t  
* @version 1.0 Gi7jgv{{  
*/ XS$5TNI  
public class ShellSort implements SortUtil.Sort{ !ke_?+ 8sY  
]:lqbg[J  
/* (non-Javadoc) yZ {H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m!{}Y]FZn  
*/  tCT-cs  
public void sort(int[] data) { \,:3bY_d  
for(int i=data.length/2;i>2;i/=2){ ?vHow$  
for(int j=0;j insertSort(data,j,i); Z3:M%)e_u$  
} fZoV\a6Kj  
} s[ {L.9Y  
insertSort(data,0,1); 4nC`DJ;V  
} HK@LA3  
Q.5C$I  
/** 2k\i/i/Y  
* @param data )XB31^  
* @param j JNQiCK,)}M  
* @param i w]Q0}Z  
*/ /u9Md3q*'  
private void insertSort(int[] data, int start, int inc) { w28!Yj1Q  
int temp; %s.hqr,I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mL\j^q,Y  
} '4gi*8Y  
} wzX 1!?  
} Qt+|s&HGt  
(TufvHC  
} @agW{%R:.  
44H#8kV  
快速排序: s?;rP,{:p  
V^ O dTM  
package org.rut.util.algorithm.support; f/spJ<B).4  
2?3D` `  
import org.rut.util.algorithm.SortUtil; X[L6Av  
3"2 8=)o  
/** +\SNaq~&  
* @author treeroot ahagt9[,:F  
* @since 2006-2-2 g8 (zvG;Y  
* @version 1.0 l3Vw?f   
*/ y %dUry%>  
public class QuickSort implements SortUtil.Sort{ @\[UZVmBw  
hg}Rh  
/* (non-Javadoc) d4"KM+EP?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <ex,@{n4  
*/ d*%-r2K  
public void sort(int[] data) { SK2nxZOH  
quickSort(data,0,data.length-1); [aM_.[bf  
} m5HP56a  
private void quickSort(int[] data,int i,int j){ B_FfXFQm<  
int pivotIndex=(i+j)/2; }D5*   
file://swap SB#YV   
SortUtil.swap(data,pivotIndex,j); )|>LSKT El  
JTcK\t8  
int k=partition(data,i-1,j,data[j]); ;6N@raP7  
SortUtil.swap(data,k,j); ># FO0R  
if((k-i)>1) quickSort(data,i,k-1); \0%)eJ  
if((j-k)>1) quickSort(data,k+1,j); 8Z;wF  
ZN)a}\]  
} hJ8|KPgdw  
/** &I8,<(`  
* @param data >S /Zd  
* @param i Xrnxpp!#^D  
* @param j {p -b,J9~a  
* @return {e,m<mAi  
*/ owA3>E5t&  
private int partition(int[] data, int l, int r,int pivot) { h,Y MR3:X  
do{ g`KVF"8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]JQk,<l5E  
SortUtil.swap(data,l,r); J~z;sTR  
} .+XGbs]kCi  
while(l SortUtil.swap(data,l,r); -Z&6PT7  
return l; EZkg0FhkZ  
} n50XGv  
^ri?eKy.-g  
} pyK|zvr-r  
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改进后的快速排序: WXj}gL`  
0*^)n&O  
package org.rut.util.algorithm.support; Ww*='lz  
4VE7%.z+  
import org.rut.util.algorithm.SortUtil; \(_FGa4j  
>8;Co]::kx  
/** }'{39vc .  
* @author treeroot hvu>P {  
* @since 2006-2-2 =p>"PqJ/7n  
* @version 1.0 v#0R   
*/ DB'pRo+U  
public class ImprovedQuickSort implements SortUtil.Sort { Y >-|`2Z  
qPdNI1 |  
private static int MAX_STACK_SIZE=4096; EzY?=<Y(  
private static int THRESHOLD=10; s)%RmsdL  
/* (non-Javadoc) WAiEINQ^)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BDY@&vF  
*/ :bMCmY  
public void sort(int[] data) { *&B1(&{:V  
int[] stack=new int[MAX_STACK_SIZE]; =tl[?6  
We3*WsX\  
int top=-1; QLo^6S5!  
int pivot; l|-1H76  
int pivotIndex,l,r; ITh1|yP  
.['@:}$1  
stack[++top]=0; k;:v~7VF  
stack[++top]=data.length-1; HGmgQ>q@M$  
NtMK+y  
while(top>0){ YMP:T?vMVh  
int j=stack[top--]; sChMIbq!Av  
int i=stack[top--]; (A?{6  
vBsd.2t~  
pivotIndex=(i+j)/2; phSF. WC  
pivot=data[pivotIndex]; {s|rk  
vOsd>3"  
SortUtil.swap(data,pivotIndex,j); hb9X<N+p  
+4ax~fuU  
file://partition !c:Q+:,H  
l=i-1; \Q{@AC<?i  
r=j; `(1em%}  
do{ H V<|eL #  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qie7iE`o  
SortUtil.swap(data,l,r); jD3,z*  
} { yU1db^  
while(l SortUtil.swap(data,l,r); )F&@ M;2p'  
SortUtil.swap(data,l,j); ]CH@ T9d5V  
: N ^1T6v  
if((l-i)>THRESHOLD){ )eGGA6G  
stack[++top]=i; )H$Ik)/N  
stack[++top]=l-1; 6BVV2j)zl:  
} NUb^!E"  
if((j-l)>THRESHOLD){ g~.,-V}  
stack[++top]=l+1; `|wH=  
stack[++top]=j; `LH!"M  
} *wP8)yv7  
F1R91V|  
} b$[_(QUw  
file://new InsertSort().sort(data); q#v.-013r  
insertSort(data); @8Drhx  
} j>eL&.d  
/** <1&kCfE&  
* @param data IGT~@);  
*/ a*CP1@O  
private void insertSort(int[] data) { L@S"c (  
int temp; z=!$3E ecr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u1` 8f]qt  
} 7GfgW02  
} _baqN!N  
} \l{*1lQ`  
(y^oGY;  
} FR0zK=\  
Zqd&EOm  
归并排序: "Na9Xea  
l}335;(  
package org.rut.util.algorithm.support; :tdx:  
cZ|D!1%  
import org.rut.util.algorithm.SortUtil; qh0)~JL4   
tzi+A;>c(v  
/** BArsj  
* @author treeroot _4o2AS:j  
* @since 2006-2-2 7oF`Os+U  
* @version 1.0 z A&0H  
*/ jCW>=1:JGY  
public class MergeSort implements SortUtil.Sort{ Yp 6;Y7^  
z:u`W#Rf  
/* (non-Javadoc) VT3Zo%Xx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sl6p/\_w  
*/ L)8+/+  
public void sort(int[] data) { @E O #Ms  
int[] temp=new int[data.length]; 68FxM#xR  
mergeSort(data,temp,0,data.length-1);  ~Zl`Ap  
} :1_hQeq  
PC\Xm,,  
private void mergeSort(int[] data,int[] temp,int l,int r){ x)"=*Jj  
int mid=(l+r)/2; a47Btd'm  
if(l==r) return ; ~(aq3ngo.  
mergeSort(data,temp,l,mid); :m#vvH  
mergeSort(data,temp,mid+1,r); e7,iO#@:m  
for(int i=l;i<=r;i++){ ,z1# |Y  
temp=data; (ZShhy8g  
} v^@L?{" }8  
int i1=l; *!Am6\+  
int i2=mid+1; KG>.7xVWV7  
for(int cur=l;cur<=r;cur++){ 3Xd+>'H  
if(i1==mid+1) LvWU %?  
data[cur]=temp[i2++]; %M}zi'qQ?  
else if(i2>r) }S#.Pw%  
data[cur]=temp[i1++]; `yQHPN0/  
else if(temp[i1] data[cur]=temp[i1++]; ~;+i[Z&e  
else v[Q)cqj/  
data[cur]=temp[i2++]; @;rVB  
} I.KYWs  
} Y\+^\`Tqu  
z7<^aS  
} l$zNsf.  
gKYn*  
改进后的归并排序: #jZ:Ex  
A:D\!5=  
package org.rut.util.algorithm.support; s|,]Nb=z/  
hJ}G5pX  
import org.rut.util.algorithm.SortUtil;  fx;5j;  
3_h%g$04 s  
/** @W. `'b-  
* @author treeroot [w{ZP4d>  
* @since 2006-2-2 Ys<wWfW  
* @version 1.0 ADR`j;2  
*/ 2X*epU_1h  
public class ImprovedMergeSort implements SortUtil.Sort {  R(zsn;  
A%GJ|h,i  
private static final int THRESHOLD = 10; 92SB'T>  
Iewq?s\Fo  
/* AGv;8'`  
* (non-Javadoc) F;b|A`M  
* }2\"(_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,88Y1|:X  
*/ .1pEq~>  
public void sort(int[] data) { $< aBawLZO  
int[] temp=new int[data.length]; sRMzU  
mergeSort(data,temp,0,data.length-1); Wt`D  
} cYp}$  
o?b%L  
private void mergeSort(int[] data, int[] temp, int l, int r) { t]` 2f3UO  
int i, j, k; TtvS|09p;  
int mid = (l + r) / 2; c8'8DM  
if (l == r) iM9563v  
return; H 0h  
if ((mid - l) >= THRESHOLD) <N*>9S,}  
mergeSort(data, temp, l, mid); uVk8KMYU  
else :J~j*_hZ  
insertSort(data, l, mid - l + 1); cpy"1=K~M  
if ((r - mid) > THRESHOLD) 7&QVw(:)M  
mergeSort(data, temp, mid + 1, r); ms{R|vU%b  
else 4ku/3/ 6  
insertSort(data, mid + 1, r - mid); |4c==7.  
w %zw+E  
for (i = l; i <= mid; i++) { i f"v4PHq  
temp = data; RasoOj$  
} a(7ryl~c=  
for (j = 1; j <= r - mid; j++) { P~ykC{nD  
temp[r - j + 1] = data[j + mid]; 3(&.[o Z  
} l<HRD  
int a = temp[l]; 6+FON$8  
int b = temp[r]; 5_`}$"<~  
for (i = l, j = r, k = l; k <= r; k++) { 6a@~;!GlI  
if (a < b) { |]q=D1/A  
data[k] = temp[i++]; '-vy Q^  
a = temp; } -vBRY  
} else { w|HZI,~  
data[k] = temp[j--]; . $k"+E  
b = temp[j]; md`ToU  
} Dr 1F|[  
} }"-r;i  
} 6+5Catsn  
_y9P]@Q7%  
/** m@@QT<  
* @param data R]Oy4U,f  
* @param l zFn&~lFB  
* @param i NM@An2  
*/ /4?`F} 7)  
private void insertSort(int[] data, int start, int len) { X{ =[q|P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _Pkh`}W:  
} 5avO48;Vc  
} `VsGa  
} =M 5M;  
} KV_Ga8hs  
}#8uXA  
堆排序:  ?~.&Y  
9ojhI=:  
package org.rut.util.algorithm.support; bY~v0kg  
f>dkT'4  
import org.rut.util.algorithm.SortUtil; JNaW> X$K  
Xt =bc  
/** E5 oD|'=WA  
* @author treeroot Bx- ,"Z \  
* @since 2006-2-2 ;#9| l=  
* @version 1.0 7Ca\ (82  
*/ ^kvH/Y&  
public class HeapSort implements SortUtil.Sort{ =on!&M  
qD*\}b]9I  
/* (non-Javadoc) Q ~JKKq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s RQh~5kM  
*/ ^4pKsO3ul  
public void sort(int[] data) { v4_OUA>z,  
MaxHeap h=new MaxHeap(); n-3j$x1Ne  
h.init(data); )V3(nZY  
for(int i=0;i h.remove(); 4QAIQQS  
System.arraycopy(h.queue,1,data,0,data.length); -5 /v`  
} \!Zh="hN  
=zeLs0s;  
private static class MaxHeap{ b0Ov+ )7#  
*g4Cy 8$  
void init(int[] data){ 8$ZSF92C  
this.queue=new int[data.length+1]; e[mhbFf-  
for(int i=0;i queue[++size]=data; ^r*%BUU9]%  
fixUp(size); yM:~{;HLF  
} ~e77w\Q0  
} F.pHL)37  
k(z<Bm  
private int size=0; ?vn 0%e868  
A;-z#R#V5  
private int[] queue; KM}4^Qc  
;K\N  
public int get() { Mp"ci+Iu  
return queue[1]; #r.` V!=  
} 0j!ke1C&C  
VnSj:LUD  
public void remove() { ? ZHE8  
SortUtil.swap(queue,1,size--); =j+oKGkoCa  
fixDown(1); 0IgnpeA]  
} QHs:=i~VH  
file://fixdown cbCE $  
private void fixDown(int k) { ;q,)NAr&  
int j; ]Uu(OI<)  
while ((j = k << 1) <= size) { _lPl)8k  
if (j < size %26amp;%26amp; queue[j] j++; HS6Imi  
if (queue[k]>queue[j]) file://不用交换 ^UvK~5tBV  
break; r` `i C5Ii  
SortUtil.swap(queue,j,k); FK@ f'  
k = j; _A,-[*OKI  
} cxD}t'T  
} ))IgB).3M  
private void fixUp(int k) { >[XOMKgQ](  
while (k > 1) { Z0"&  
int j = k >> 1; |c oEBFG  
if (queue[j]>queue[k]) d@6:|auO  
break; E]H   
SortUtil.swap(queue,j,k); p_5>?[TW:  
k = j; W?^8/1U  
} iijd $Tv  
} )-.Cne;n  
N{^>MRK=5  
} t?9 ;cS4  
(I7&8$Zl  
} /m Q2;*|  
1akD]Z  
SortUtil: Q.9Ph ~  
r%y;8$/-  
package org.rut.util.algorithm; T$n>7X-r  
})zB".  
import org.rut.util.algorithm.support.BubbleSort; KkdG.c'  
import org.rut.util.algorithm.support.HeapSort; nb0 Py>4  
import org.rut.util.algorithm.support.ImprovedMergeSort; cXb @H#  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZSF=  
import org.rut.util.algorithm.support.InsertSort; KH2F#[ !Lw  
import org.rut.util.algorithm.support.MergeSort; lPRdwg-  
import org.rut.util.algorithm.support.QuickSort; ^_*jp[!`b$  
import org.rut.util.algorithm.support.SelectionSort; iHE0N6%q  
import org.rut.util.algorithm.support.ShellSort; X(r)Z\  
IqhICC1V-  
/** W>` g;[ W  
* @author treeroot I~p8#<4#b  
* @since 2006-2-2 $[M} K  
* @version 1.0 ?418*tXd  
*/ A*7Io4e!  
public class SortUtil { gx!*O<|e4  
public final static int INSERT = 1; ASzzBR;?_  
public final static int BUBBLE = 2; F!OOrW]p0  
public final static int SELECTION = 3; vQ-i xh  
public final static int SHELL = 4; 5i!V}hE  
public final static int QUICK = 5; -H1"OJ2aF  
public final static int IMPROVED_QUICK = 6; F5N>Uqr*oN  
public final static int MERGE = 7; IF&g.R  
public final static int IMPROVED_MERGE = 8; j+_S$T8w  
public final static int HEAP = 9; I@3Q=14k%  
o &BPG@n  
public static void sort(int[] data) { uY&=eQ_Cb  
sort(data, IMPROVED_QUICK); x @1px&^  
} w1wXTt  
private static String[] name={ o"'iX UJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V/aQ*V{  
}; )^t!|*1LA  
<A#5v\{.;~  
private static Sort[] impl=new Sort[]{ YHs?QsP  
new InsertSort(), (bg}an  
new BubbleSort(), !2GHJHxv]c  
new SelectionSort(), n_<mPU  
new ShellSort(), q<-%L1kc 1  
new QuickSort(), wENzlXeOP  
new ImprovedQuickSort(), rs[?v*R74  
new MergeSort(), 0-*Z<cu%l  
new ImprovedMergeSort(), !+m@AQ:,  
new HeapSort() 6 0`+ 9(^  
}; V3## B}2[Y  
.|T2\M  
public static String toString(int algorithm){ (l Lu?NpIi  
return name[algorithm-1]; ,+~2&>wj  
} /wr6\53J  
M[A-1]'  
public static void sort(int[] data, int algorithm) { Xa4GqV9M/-  
impl[algorithm-1].sort(data); JYPxd~T/-  
} Gu2_dT  
S,lxM,DL&  
public static interface Sort { Q`N18I3  
public void sort(int[] data); \ 0D$Mie  
} ;U |NmC+  
d&hD[v  
public static void swap(int[] data, int i, int j) { !~kEtC  
int temp = data; |,3l`o k  
data = data[j]; qc3~cH.@  
data[j] = temp; p:B ]Ft  
} F@9Y\. ,  
} LaDY`u0G%  
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