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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。 ndmsXls  
插入排序: C6?({ QB@  
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package org.rut.util.algorithm.support; JRw<v4pZ  
Ao )\/AR'  
import org.rut.util.algorithm.SortUtil; ybC0Ee@  
/** aZ,j1j0p  
* @author treeroot -l Y,lC>{  
* @since 2006-2-2 q"48U.}T  
* @version 1.0 l`bl^~xRo  
*/ %jE0Z4\  
public class InsertSort implements SortUtil.Sort{ k/Z]zZC  
NR>&1aRbyb  
/* (non-Javadoc) sck.2-f"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =dT  #x  
*/ (+CNs  
public void sort(int[] data) { +F?}<P_v  
int temp; tP:ER  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lC=-1*WH  
} /n2qW.qJ>  
} n2(`O^yd7C  
} l\/uXP?  
j%U'mGx  
} 1gA^Qv~?  
XtZeT~/7RT  
冒泡排序: 7;I;(iY  
[;C|WTYSL  
package org.rut.util.algorithm.support; Zv0'OX~8i  
O:]e4r,'  
import org.rut.util.algorithm.SortUtil; | |u  
%ws@t"aER  
/** %p(X*mVX  
* @author treeroot ~eyZH8&  
* @since 2006-2-2 .iV-Y*3<  
* @version 1.0 ]@I>OcH  
*/ SIZ&0V  
public class BubbleSort implements SortUtil.Sort{ HdR TdV  
h]]B @~  
/* (non-Javadoc) N!//m?}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Z*nm<=  
*/ N;HG@B!m  
public void sort(int[] data) { zcy`8&{A<?  
int temp; y]okOEV0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S l`F`  
if(data[j] SortUtil.swap(data,j,j-1); F-X L  
} Kr'Yz!  
} p[K!.vOt+  
} KY%LqcC  
} z41v5rB4  
(Fj"<  
} ~c=F$M^"c  
0<XxR6w  
选择排序: <74r  
]&?8l:3-G  
package org.rut.util.algorithm.support; I&%KOe0  
Eb7GiRT#  
import org.rut.util.algorithm.SortUtil; ATWa/"l(H-  
kxLWk%V  
/** `qV*R 2  
* @author treeroot Lng@'Yr  
* @since 2006-2-2 _]zH4o<p  
* @version 1.0 #Y0ru9  
*/ 6u9?  
public class SelectionSort implements SortUtil.Sort {  \62!{  
)*L=$0R  
/* O'{g{  
* (non-Javadoc) J)EL<K$Z[  
* <2e[;$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eUKl(  
*/ 3>6rO4,  
public void sort(int[] data) { Ie[DTy  
int temp; [7\x(W-:@>  
for (int i = 0; i < data.length; i++) { 2BO&OX|X  
int lowIndex = i; vawS5b;  
for (int j = data.length - 1; j > i; j--) { Nwg?(h#  
if (data[j] < data[lowIndex]) { =PjxMC._  
lowIndex = j; -Rwx`=6tV  
} Ae;mU[MK/  
} #]h&GX  
SortUtil.swap(data,i,lowIndex); iHT=ROL  
} -br): }f  
} C{>dE:*K^  
LvCX(yjZ*  
} v"l8[::  
& h\!#X0  
Shell排序: IQWoK"B  
!E6Q ED"  
package org.rut.util.algorithm.support; t[ZGY,8  
TSH'OW !b  
import org.rut.util.algorithm.SortUtil; X.V4YmZ- ;  
#fDM{f0]R  
/** B%WkM\\!^  
* @author treeroot lf\^!E:  
* @since 2006-2-2 ; Kh!OBZFo  
* @version 1.0 nwVW'M]r  
*/ 4>Y*owa4  
public class ShellSort implements SortUtil.Sort{ Nj.;mr<  
oS~;>]W  
/* (non-Javadoc) +OZ\rs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ek60[a  
*/ q<K/q"0-l  
public void sort(int[] data) { 4+Jf!ovS=  
for(int i=data.length/2;i>2;i/=2){ 1/v#Z#3[  
for(int j=0;j insertSort(data,j,i); ,hWuAu6.L  
} rY M@e  
} }S;A%gYm  
insertSort(data,0,1); w3&L 6|,  
} K,,'{j2#f  
qFI19`?8E  
/** &YBZuq2?  
* @param data yG^pND>_df  
* @param j `i!fg\qnK  
* @param i t)mc~M9w  
*/ }nptmc  
private void insertSort(int[] data, int start, int inc) { QabLMq@n`  
int temp; wlEK"kKU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p || mR  
} U_RWqKL  
} $WO{!R  
} 4Ik'beZqK  
- LB}=  
} 72vp6/;)  
L^=G(op*  
快速排序: <`u_O!h  
Hp*N%  
package org.rut.util.algorithm.support; -@XOe&q  
AwZz}J+  
import org.rut.util.algorithm.SortUtil; RIDl4c [  
4HpKKhv"  
/** K'y|_XsBB)  
* @author treeroot @aP1[(m  
* @since 2006-2-2 :%h|i&B  
* @version 1.0 e@1A_q@.  
*/ j_h0 hm]  
public class QuickSort implements SortUtil.Sort{ MpTOC&NG%s  
!;K zR&  
/* (non-Javadoc) O Q$C#:?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yy;BJ_  
*/ S%e)br}  
public void sort(int[] data) { 1B@7#ozWA?  
quickSort(data,0,data.length-1); 5?0~7^de  
} Pj_*,L`mZ  
private void quickSort(int[] data,int i,int j){ {q^UWv?1  
int pivotIndex=(i+j)/2; 9ji`.&#  
file://swap =mSu^q(l  
SortUtil.swap(data,pivotIndex,j); MY^o0N  
;0`IFtz  
int k=partition(data,i-1,j,data[j]); >I',%v\?@  
SortUtil.swap(data,k,j); biS{.  
if((k-i)>1) quickSort(data,i,k-1); HBZ6Pj  
if((j-k)>1) quickSort(data,k+1,j); dkeMiL m  
Ro;I%j  
} mW~*GD~r  
/** _h 6c[*  
* @param data c7.M\f P  
* @param i p K ^$^*#  
* @param j zRgAmX/g  
* @return r7^v@  
*/ L2wX?NA  
private int partition(int[] data, int l, int r,int pivot) { R\<d&+q@  
do{  n}- _fx  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uL ~wMX  
SortUtil.swap(data,l,r); =MvB9gx@r  
} "x nULQK  
while(l SortUtil.swap(data,l,r); Xkk 8#Y":  
return l; li{!Jp5]1b  
} C{+JrHV%h  
TF80WMt  
} YI`BA`BQ8  
SE(c_ sX  
改进后的快速排序: Dy:r)\KX  
h6}rOchj  
package org.rut.util.algorithm.support; ]]e>Jym  
xSDTO$U8%  
import org.rut.util.algorithm.SortUtil; wk{]eD%  
LB[?kpy  
/** xu{VU^'Y  
* @author treeroot fWb+08}C  
* @since 2006-2-2 ^Pah\p4bj  
* @version 1.0 +~=j3U  
*/ Y/?z8g'p  
public class ImprovedQuickSort implements SortUtil.Sort { LXZI|K[}k  
0g~Cdp  
private static int MAX_STACK_SIZE=4096; X\>/'fC$  
private static int THRESHOLD=10; qz.l  
/* (non-Javadoc) 9 Q*:II  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g1:%986jv  
*/ bR;.KC3C  
public void sort(int[] data) { G_zK .N   
int[] stack=new int[MAX_STACK_SIZE]; ZAn9A>5_  
*_P'>V#p  
int top=-1; J#q^CWN3R  
int pivot; 0{XT#H  
int pivotIndex,l,r; Az-!X!O*f  
*Vg)E*s  
stack[++top]=0; _xy[\X;9  
stack[++top]=data.length-1; eNO[ikm  
+1@'2w{  
while(top>0){ ; .b^&h  
int j=stack[top--]; @%YbptT}  
int i=stack[top--]; {;6a_L@q;|  
-f1lu*3\  
pivotIndex=(i+j)/2; [)kuu  
pivot=data[pivotIndex]; \(&&ed:  
cmAdQ)(Kzd  
SortUtil.swap(data,pivotIndex,j); Z~}9^(qc  
9M ;Y$Z  
file://partition TKiYEh  
l=i-1; /8Z&Y`G  
r=j; <@l j\,  
do{ 6L)7Q0Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B@#vS=g  
SortUtil.swap(data,l,r); N 1.fV-  
} 0{u%J%;  
while(l SortUtil.swap(data,l,r); NjPQT9&3h  
SortUtil.swap(data,l,j); 3}fhU{-c  
G}LV"0?  
if((l-i)>THRESHOLD){ Z@%A(nZ_  
stack[++top]=i; 1=C<aRZ b^  
stack[++top]=l-1; b`% !\I  
} W}%"xy]N  
if((j-l)>THRESHOLD){ k+J63+obd  
stack[++top]=l+1; V DZOJM)(  
stack[++top]=j; ]EUQMyR  
} l?YO!$  
>YsM'.EFD  
} 3g5r}Ug  
file://new InsertSort().sort(data); 0Wc_m;  
insertSort(data); Do5.  
} I?Z"YR+MQ  
/** `M(st%@n  
* @param data !w@i,zqu  
*/ wAJ= rRI  
private void insertSort(int[] data) { )]4=anJu@|  
int temp; F S$8F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mlUj%:Gm#  
} iq^;csyKb  
} Koj9]2<0  
} }Z t#OA $  
z-:>[Sn  
} &49WfctT  
$DtUTh3)  
归并排序: .p?SPR  
qQ6@43TC  
package org.rut.util.algorithm.support; cSNeWJKA6  
4i5b.b U$  
import org.rut.util.algorithm.SortUtil; @1<VvW=  
0\s&;@xKk  
/** |[>yJXxEL@  
* @author treeroot da_0{;wR  
* @since 2006-2-2 }B!io-}  
* @version 1.0 m(^N8k1K;  
*/ %iJ}H6m  
public class MergeSort implements SortUtil.Sort{  ls7P$qq  
SU6Aq?`@  
/* (non-Javadoc) *OIBMx#qxn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I_kA!^  
*/ F6b;qb6n  
public void sort(int[] data) { }qWB=,8HQ  
int[] temp=new int[data.length]; TJ_6:;4,|_  
mergeSort(data,temp,0,data.length-1); Zb|a\z8?  
} {E7STLQ_%  
 qmenj  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,A)Z .OWOq  
int mid=(l+r)/2; ET 0(/Zz  
if(l==r) return ; q_mxZM ->  
mergeSort(data,temp,l,mid); 3-)}.8F  
mergeSort(data,temp,mid+1,r); [1ClZ~f  
for(int i=l;i<=r;i++){ B@VAXmCaoV  
temp=data; JNJ6HyCU  
} +Z86Qz_  
int i1=l; ,'9R/7%s  
int i2=mid+1; 4HX;9HPHE<  
for(int cur=l;cur<=r;cur++){ {^^LeUd#V  
if(i1==mid+1) !(viXV5  
data[cur]=temp[i2++]; K5\l (BB  
else if(i2>r) UO!} 0'  
data[cur]=temp[i1++]; I0=L_&`)  
else if(temp[i1] data[cur]=temp[i1++]; t}?-ao  
else N 7Y X  
data[cur]=temp[i2++];  Zy8tI#  
} U~t!   
} ]VE3u_kR  
o~q.j_Sa  
} s.n:;8RibP  
qDz[=6BF  
改进后的归并排序: x; -D}#  
Uj3HAu  
package org.rut.util.algorithm.support; !c-MC|  
j]]5&u/l  
import org.rut.util.algorithm.SortUtil; n2Mpo\2  
pG"h ZB3)  
/** 7Cbr'!E\_V  
* @author treeroot J#t8xL  
* @since 2006-2-2 $b2~H+u(  
* @version 1.0 T!HAE#xC  
*/ 5,V*aP  
public class ImprovedMergeSort implements SortUtil.Sort { "r3h+(5  
Y6d~hLC  
private static final int THRESHOLD = 10; v\qyDZVV  
&0"*.:J9  
/* &^uaoB0  
* (non-Javadoc) G;ZN>8NB  
* [McqwU/Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a" T+CA  
*/ LP'q$iB!  
public void sort(int[] data) { ^N 4Y*NtV7  
int[] temp=new int[data.length]; H\N} 0^ea  
mergeSort(data,temp,0,data.length-1); x K\i&A  
} w^YXnLLJG  
Wg,@S*x(  
private void mergeSort(int[] data, int[] temp, int l, int r) { d6 -q"  
int i, j, k; Q2* 8c$  
int mid = (l + r) / 2; pSIXv%1J  
if (l == r) %L7DC`  
return; SW+;%+`  
if ((mid - l) >= THRESHOLD) +aPe)U<t  
mergeSort(data, temp, l, mid); N'$P( bx  
else 5MZv!N   
insertSort(data, l, mid - l + 1); UvB\kIH  
if ((r - mid) > THRESHOLD) ]#rV]As  
mergeSort(data, temp, mid + 1, r); E}a.qM'  
else 4^4T#f2=e  
insertSort(data, mid + 1, r - mid); B4+c3M\$V  
ua &uR7  
for (i = l; i <= mid; i++) { 1/qD5 *`Y  
temp = data; 8ph1xQ'  
} pY&dw4V  
for (j = 1; j <= r - mid; j++) { ?hR0 MnP  
temp[r - j + 1] = data[j + mid]; -vk/z+-^!  
} ,# .12Q!  
int a = temp[l]; JP {`^c  
int b = temp[r]; jUR* |  
for (i = l, j = r, k = l; k <= r; k++) { 6c/0OM#  
if (a < b) { Cw kQhj?  
data[k] = temp[i++]; LTH, a?lD  
a = temp; X*d!A >s  
} else { Aw4)=-LKO  
data[k] = temp[j--]; x_?K6[G&}  
b = temp[j]; ~i'!;'-_}  
} WX_g  
} HU4h.Lm  
} u|u)8;'9(  
_v,Wl/YAp  
/** 3webAaO  
* @param data $AMcU5^b7  
* @param l M(C}2.20  
* @param i )`\Q/TMl5  
*/ G{Ju2HY  
private void insertSort(int[] data, int start, int len) { 0Q,Tcj  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gSyBoY  
} $#W^JWN1  
} TlX:05/V8  
} [Fk|m1i!  
} B4+u/hkbh?  
-49I3&  
堆排序: p|a`Q5z!  
I3T;|;P7  
package org.rut.util.algorithm.support; DW:\6k  
ba ,n/yH  
import org.rut.util.algorithm.SortUtil; p} eO  
KZ^>_K&  
/** g/P1lQ)  
* @author treeroot *`/4KMrq  
* @since 2006-2-2 \9od*y  
* @version 1.0 b'R]DS{8  
*/ _+7P"B|\  
public class HeapSort implements SortUtil.Sort{ mL'A$BR`  
QyZ' %T5J  
/* (non-Javadoc) XH/!A`ZK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@[#7:rHL  
*/ -HuIz6  
public void sort(int[] data) { HJpx,NU'  
MaxHeap h=new MaxHeap(); (dO0`wfM  
h.init(data); yGC HWP  
for(int i=0;i h.remove(); }NdLd!  
System.arraycopy(h.queue,1,data,0,data.length); |o(te  
} f.oY:3h:  
aM,g@'.=  
private static class MaxHeap{ 2~r2ErtS  
v~._]f$:  
void init(int[] data){ s=E6HP@q  
this.queue=new int[data.length+1]; K>XZrt  
for(int i=0;i queue[++size]=data; J#iuF'%Ds  
fixUp(size); EUH9R8)  
} w Bm4~ ~_  
} p}wysVB  
X(DP=C}v9  
private int size=0; "@5{=  
`Jj b4]  
private int[] queue; L5 Ai  
dWwb}r(ky  
public int get() { fLSDt(c',  
return queue[1]; d& v 7l  
} r( wtuD23q  
Zc&pJP+M'U  
public void remove() { |gINB3L  
SortUtil.swap(queue,1,size--); qxZf!NX5  
fixDown(1); np}0O  X  
} 8+(wAbp  
file://fixdown Tgi7RAY  
private void fixDown(int k) { 5N ;xo??  
int j; WUQa2$.  
while ((j = k << 1) <= size) { \X]I: 0^j  
if (j < size %26amp;%26amp; queue[j] j++; }20tdD ~  
if (queue[k]>queue[j]) file://不用交换 2@HmZ!|Q  
break; O]F(vHK\   
SortUtil.swap(queue,j,k); +x4*T  
k = j; 4ISIg\:c*  
} [kgCB7.V  
} H&k&mRi  
private void fixUp(int k) { G'nSnw  
while (k > 1) { 0XyPG  
int j = k >> 1; [E2".F3  
if (queue[j]>queue[k]) Zny9TP  
break; {%, 4P_m  
SortUtil.swap(queue,j,k); PtL8Kd0`C  
k = j; .uN(44^+x  
} uLI;_,/:  
} JZ-64OT  
?"?AH/ED  
} 'C:i5?zh(q  
Rx.5;2m  
} h_\W7xt  
7W&XcF  
SortUtil: )RWukr+  
UKB/>:R  
package org.rut.util.algorithm; +9<:z\B|  
9 uX 15a  
import org.rut.util.algorithm.support.BubbleSort; ]Al)>  
import org.rut.util.algorithm.support.HeapSort; |B^Picu  
import org.rut.util.algorithm.support.ImprovedMergeSort; ke/4l?zs  
import org.rut.util.algorithm.support.ImprovedQuickSort; eU]I !pI<  
import org.rut.util.algorithm.support.InsertSort; F)/4#[  
import org.rut.util.algorithm.support.MergeSort; FS('*w&bP  
import org.rut.util.algorithm.support.QuickSort; < 5ULu(b&$  
import org.rut.util.algorithm.support.SelectionSort; 7v.O Lp  
import org.rut.util.algorithm.support.ShellSort; evVxzU&  
~Q]::  
/** 9c{ ~$zJW  
* @author treeroot o{mVXidE  
* @since 2006-2-2 ^ b=;  
* @version 1.0 lx?v .:zl\  
*/ c+whpQ=01  
public class SortUtil { wp:Zur5Y  
public final static int INSERT = 1; 65mfq&"P ?  
public final static int BUBBLE = 2; " Z dI~  
public final static int SELECTION = 3; TKEcbGhy  
public final static int SHELL = 4; OsYZ a`$,  
public final static int QUICK = 5; ps/|^8aGZ  
public final static int IMPROVED_QUICK = 6; C!^;%VQ}d  
public final static int MERGE = 7; /Vx EqIK  
public final static int IMPROVED_MERGE = 8; AB<bW3qf(  
public final static int HEAP = 9; N\CHIsVm>  
E^pn-rB  
public static void sort(int[] data) { AOTtAV_e  
sort(data, IMPROVED_QUICK); y4&x`|tv  
} m-cw5lW  
private static String[] name={ moMNd(p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jpMMnEVj6P  
}; 7+6I~&x!Lz  
7WmY:g#s  
private static Sort[] impl=new Sort[]{ s]D1s%Mx  
new InsertSort(), k6\&[BQs  
new BubbleSort(), Ms+SJ5Lg  
new SelectionSort(), !rG-[7K  
new ShellSort(), 6eNBldP!  
new QuickSort(), bp}]'NA  
new ImprovedQuickSort(), N5xI;UV9'  
new MergeSort(), }C~9 ?Y  
new ImprovedMergeSort(), rvb@4-i>iI  
new HeapSort() |H 5$VSw  
}; ( "<4Ry.u  
Fa#5a'}I  
public static String toString(int algorithm){ $lUz!m jG  
return name[algorithm-1]; #wh[F"zX  
} h]VC<BD6S  
xZQyH  
public static void sort(int[] data, int algorithm) { OE}c$!@  
impl[algorithm-1].sort(data); ,wyEo>>4)  
} wDBU+Z  
m?;/H  
public static interface Sort { b%VZPKA;  
public void sort(int[] data); ,}I m^~5  
} -KqMSf&9  
'loko#6  
public static void swap(int[] data, int i, int j) { /c7jL4oD  
int temp = data; (^<skx>  
data = data[j]; =#&+w[4?&.  
data[j] = temp; N)KN!!  
} T@n};,SQ  
} ;YBk.} %  
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