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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。 QmRE<i  
插入排序: +u[?8D7Y  
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package org.rut.util.algorithm.support; r[votdFo  
5:6]ZFW  
import org.rut.util.algorithm.SortUtil; @, %IVKg\  
/** 18{" @<wIs  
* @author treeroot o9 g0fC  
* @since 2006-2-2 |-! yKB  
* @version 1.0 idLCq^jnJ  
*/ *5Aq\g,n  
public class InsertSort implements SortUtil.Sort{ rZSX fgfr  
-)dS`hM  
/* (non-Javadoc) Lr;PESV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lMW4SRk1C  
*/ yw{;Qm2\7  
public void sort(int[] data) { |v?*}6:a  
int temp; pQ/ bIuq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #nS[]UbwZ  
} _5l3e7YN  
} xZpGSlA  
} %^VQw!  
{ kF"<W  
} szG0?e  
*LZ^0c:r  
冒泡排序: Eg;xj@S<2  
n>["h2  
package org.rut.util.algorithm.support; =3= $F%  
D/7hVwMw:  
import org.rut.util.algorithm.SortUtil; wNt-mgir-Q  
&8^ch,+pD  
/** wg0hm#X  
* @author treeroot Dw-i!dq  
* @since 2006-2-2 6*Y>Y&sea  
* @version 1.0 Ohe* m[  
*/ WG\gf\=I  
public class BubbleSort implements SortUtil.Sort{ rh%-va9  
PR i3=3oF  
/* (non-Javadoc) '<v_YxEn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !/|^ )d^U  
*/ `kERM-@A  
public void sort(int[] data) { (bBr O74lR  
int temp; KWzJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ klqN9d9k  
if(data[j] SortUtil.swap(data,j,j-1); ~3F\7%Iqc  
} }M+2 ,#l  
} !?%'Fy6t  
} JLZ=$d  
} MG6y  
G"._]3 CPF  
} tUR9ti  
>QJfTkD$  
选择排序: y7x[noGtR  
j^&{5s  
package org.rut.util.algorithm.support; y5AJ1A6?E  
8fI&-uP{g  
import org.rut.util.algorithm.SortUtil; LNR~F_64Q  
|'bRVqJ  
/** 5[{#/!LX)  
* @author treeroot MaX:o GF,  
* @since 2006-2-2 !`VC4o  
* @version 1.0 tq^d1b(j4  
*/ wWU5]v  
public class SelectionSort implements SortUtil.Sort { o"5[~$O  
oF9c>^s  
/* C"=^ (HU  
* (non-Javadoc) HvSYE[Zt|  
* *[MK{m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !o k6*m  
*/ Gd08RW  
public void sort(int[] data) { u|'}a3  
int temp; *w[\(d'T  
for (int i = 0; i < data.length; i++) { i8Y$cac!  
int lowIndex = i; ^& R H]q  
for (int j = data.length - 1; j > i; j--) { "BAH=ul5E  
if (data[j] < data[lowIndex]) { y?1<7>L5~  
lowIndex = j; QxjX:O  
} _=\=oC  
} /e0cx:.w  
SortUtil.swap(data,i,lowIndex); \h&ui]V  
} :1O1I2L0  
} /V% ]lmxQ  
Z;XiA<|  
} AvNU\$B4aG  
<P"4Mk7`s  
Shell排序: ;& PK6G  
yXdJ5Me(T  
package org.rut.util.algorithm.support; G L> u3K  
0D*uZ,oBEw  
import org.rut.util.algorithm.SortUtil; RC']"jpW  
*xl930y  
/** l`}Ag8Q  
* @author treeroot <\If:  
* @since 2006-2-2 uKBSv*AM  
* @version 1.0 Wveba)"$  
*/ 5r$ X  
public class ShellSort implements SortUtil.Sort{ +z2+z  
-#nfO*H}  
/* (non-Javadoc) ERE1XOe=D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [v!TQwMU  
*/ / W,K% s]  
public void sort(int[] data) { `S{Blv  
for(int i=data.length/2;i>2;i/=2){ R1%2]?  
for(int j=0;j insertSort(data,j,i); {MaFv  
} u?>]C6$  
} v\UwL-4[  
insertSort(data,0,1); vj23j[!|  
} |4F 3Gu  
dK=<%)N  
/** # XD-a  
* @param data v GT#BS%  
* @param j Du3nK" -g  
* @param i N2~q\BqA  
*/ WLTraB[?  
private void insertSort(int[] data, int start, int inc) { -p:X]Ov  
int temp; p FkqDU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !QB(M@1  
} _IK@K 6V1  
} TyCMZsvM,  
} tv+H4/  
N~%F/`Z<+  
} =7Wr  
g`skmHS89  
快速排序: V|h/a\P  
t1I` n(]n  
package org.rut.util.algorithm.support; +6xEz67A<  
&$vW  
import org.rut.util.algorithm.SortUtil; 73C  
AV0C9a/td  
/** #h 4`f  
* @author treeroot ![v@+9  
* @since 2006-2-2 a09]5>*  
* @version 1.0 )cMW,  
*/ F_Q?0 Do0'  
public class QuickSort implements SortUtil.Sort{ K`9ph"(Z  
_Vs\:tygs  
/* (non-Javadoc) Nz ,8NM]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +U%U3tAvs  
*/ ?}N@bsl08w  
public void sort(int[] data) { I#]$H#}Av  
quickSort(data,0,data.length-1); l 1RpG"  
} 8qEK6-  
private void quickSort(int[] data,int i,int j){ 8G>;X;W  
int pivotIndex=(i+j)/2; mkCv  f  
file://swap nr#DE?  
SortUtil.swap(data,pivotIndex,j); kW#{[,7r  
l"\W]'T:r  
int k=partition(data,i-1,j,data[j]); \gh`P S-B  
SortUtil.swap(data,k,j); X:*Ut3"  
if((k-i)>1) quickSort(data,i,k-1); u= |hRTD=  
if((j-k)>1) quickSort(data,k+1,j); Daa2.*  
NC*h7  
} O^D$ ~ ]  
/** LN8V&'>  
* @param data 3zO'=gwJ  
* @param i 0aMw  
* @param j ,Z7tpFC  
* @return '~^3 =[Z  
*/ *j,5TO-j  
private int partition(int[] data, int l, int r,int pivot) { g2=5IU<  
do{ LDJ=<c!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fR>(b?C  
SortUtil.swap(data,l,r); ldJ:A*/M6  
} V4RtH  
while(l SortUtil.swap(data,l,r); JZ[~3swR  
return l; QOECpk-  
} ~ituPrH%<  
`};8   
} QES[/i +  
%5=XszS  
改进后的快速排序: u/5I;7cb  
p",HF%  
package org.rut.util.algorithm.support; t} E 1NXW  
2EubMG  
import org.rut.util.algorithm.SortUtil; 3 ;F=EMz{  
{YCquoF  
/** Vo%MG.IPB  
* @author treeroot <y(uu(c  
* @since 2006-2-2 Z#wmEc.}C  
* @version 1.0 ^/Id!Y7  
*/ 5Pis0fa  
public class ImprovedQuickSort implements SortUtil.Sort { ]_S&8F}|  
Z6}B}5@y  
private static int MAX_STACK_SIZE=4096; $Nr :YI  
private static int THRESHOLD=10; {*8'bNJ  
/* (non-Javadoc) ! K~PH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "YlN_ U  
*/ =OIx G}*  
public void sort(int[] data) { 4#?Ox vH  
int[] stack=new int[MAX_STACK_SIZE]; p7Yej(B  
E%M~:JuKd?  
int top=-1; 3_Su5~^  
int pivot; yfS`g-j{~  
int pivotIndex,l,r; jXO*_R  
-WIT0F4o;  
stack[++top]=0; 1.]Py"@:  
stack[++top]=data.length-1; $/%|0tQ  
u-zl-?Ne  
while(top>0){ 2\ /(!n  
int j=stack[top--]; )#9R()n!  
int i=stack[top--]; kfo, PrW`A  
& p 1Et  
pivotIndex=(i+j)/2; 9-DDly [)4  
pivot=data[pivotIndex]; $cri"G  
}>cQ}6n.  
SortUtil.swap(data,pivotIndex,j); (]Z%&>*  
bz[+g,e2oA  
file://partition +Io[o6*  
l=i-1; NTk"W!<Cl2  
r=j; {]~b^=qE$  
do{ 3F ;+ D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (5%OAjW  
SortUtil.swap(data,l,r); &N!QKrj3  
} }d2]QD#O  
while(l SortUtil.swap(data,l,r); 4/$ $?w4  
SortUtil.swap(data,l,j); T?W`g> yM  
3 tMFJ ;*`  
if((l-i)>THRESHOLD){ iWu$$IV?-  
stack[++top]=i; |1G/J[E  
stack[++top]=l-1; U}7 a;4?  
} " 1YARGu  
if((j-l)>THRESHOLD){ tL1"Dt>  
stack[++top]=l+1; B*A{@)_  
stack[++top]=j; 0+b1R}!2  
} y; Up@.IG  
QDS=M]  
} *5iNw_&  
file://new InsertSort().sort(data); B98&JoS  
insertSort(data); ]<mXf~zg  
} dm1W C:b  
/** _e AZ_@  
* @param data N5 SK_+  
*/ AD4KoT&  
private void insertSort(int[] data) { q9w6 6R  
int temp; k9`Bi`wp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '{j.5~4y  
} z#*w Na&@[  
} [ZS}P  
} le%_[/_I|  
PuAcsYQhN  
} 8Letpygm  
WRQJ6B  
归并排序: O0#wM-M  
DG&14c>g  
package org.rut.util.algorithm.support; >Liv].  
U]lXw+&  
import org.rut.util.algorithm.SortUtil; DQ^yqBVgQ  
t%<nS=u  
/** D^To:N 7U  
* @author treeroot I ;N)jj`b  
* @since 2006-2-2 \3(d$_:b  
* @version 1.0 {w.rcObIw+  
*/ 5An| #^]  
public class MergeSort implements SortUtil.Sort{ MzRURH,  
@2-Eky  
/* (non-Javadoc) CRvUD.D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $[iSZ;  
*/ GcQO&oq|  
public void sort(int[] data) { r*<)QP^B~  
int[] temp=new int[data.length]; ]?tsYXU j  
mergeSort(data,temp,0,data.length-1); pS vDH-  
} rxQn[  
d ! A)H<Zt  
private void mergeSort(int[] data,int[] temp,int l,int r){ [>+(zlK"  
int mid=(l+r)/2; Q+E%"`3V4l  
if(l==r) return ; r'M|mQ$s>  
mergeSort(data,temp,l,mid); FMB\$(g  
mergeSort(data,temp,mid+1,r); #*;(%\q}  
for(int i=l;i<=r;i++){ NvWwj%6]  
temp=data; 306C_ M\$  
} |*"uj  
int i1=l; u1O?`  
int i2=mid+1; vRYQ4B4o  
for(int cur=l;cur<=r;cur++){ -J4?Km  
if(i1==mid+1) ^EE 3E'  
data[cur]=temp[i2++]; WK]SHiHD  
else if(i2>r) >I Aw Nr  
data[cur]=temp[i1++]; #q40  >)]  
else if(temp[i1] data[cur]=temp[i1++]; ?"\`u;  
else PhF3' ">  
data[cur]=temp[i2++]; ?J,hv'L]  
} &yv%"BPV  
} =YkJS%)M)  
d paZ6g  
} 2`/JT  
r Ip84}  
改进后的归并排序: ET1/oG<@  
I&qT3/SVI  
package org.rut.util.algorithm.support; 8SK}#44Xz  
0\O*\w?  
import org.rut.util.algorithm.SortUtil; lq=| =  
fD#|C~:=  
/** o0^'x Vv  
* @author treeroot a(s}Ec${Z  
* @since 2006-2-2 x F7C1g(  
* @version 1.0 {4Cn/}7Ly^  
*/ )e|Cd} 2  
public class ImprovedMergeSort implements SortUtil.Sort { :<4:h.gO8  
FW(y#Fmqs  
private static final int THRESHOLD = 10; :Eq=wbAw  
S#dkJu]]#  
/* 2628 c`  
* (non-Javadoc) Fyoy)y*  
* Urur/_]-%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X64OX9:YF  
*/ ]0.? 1se  
public void sort(int[] data) { X*VHi  
int[] temp=new int[data.length]; R:kNAtK  
mergeSort(data,temp,0,data.length-1); \ Xow#@[  
} E6|!G  
'm9f:iTr  
private void mergeSort(int[] data, int[] temp, int l, int r) { LGZ5py=xb  
int i, j, k; 6b4Kcl<i  
int mid = (l + r) / 2; (nfra,'  
if (l == r) \9dSI  
return; u}hQF $a"  
if ((mid - l) >= THRESHOLD) }2-<}m9}  
mergeSort(data, temp, l, mid); O= PFr"  
else #+p30?r0y  
insertSort(data, l, mid - l + 1); Lzu;"#pw  
if ((r - mid) > THRESHOLD) I^ sWf3'db  
mergeSort(data, temp, mid + 1, r); YG$2ySkDhE  
else Z W` Ur>  
insertSort(data, mid + 1, r - mid); VQV7W  
EL $"MT}p  
for (i = l; i <= mid; i++) { saQA:W;  
temp = data; p"f=[awp  
} q3Re F_  
for (j = 1; j <= r - mid; j++) { p*)RP2  
temp[r - j + 1] = data[j + mid]; N r5 aU6]  
} eYBo*  
int a = temp[l]; rXXIpQRi$S  
int b = temp[r]; [,)yc/{*  
for (i = l, j = r, k = l; k <= r; k++) { De,4r(5  
if (a < b) { @=q,,t$r  
data[k] = temp[i++]; e|u|b  
a = temp; b}4k-hZL  
} else { t_5b  
data[k] = temp[j--]; cy8+@77  
b = temp[j]; ysD @yM,  
} NKB,D$!~&  
} "ut:\%39.  
} 68?oV)fE  
h"/FqO  
/** 4&;.>{ :;  
* @param data B8-v!4b0`  
* @param l GCCmUR9d  
* @param i w_|R.T\7  
*/ hM\<1D CKG  
private void insertSort(int[] data, int start, int len) { CLU!/J $!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'jWd7w~(  
} c0jdZ#H  
} [b-27\b  
} n~N>c*p  
} e_s9E{(  
j|gv0SI_ w  
堆排序: TtEc~m  
, "w`,c>!  
package org.rut.util.algorithm.support; r(NfVQF  
|$@/ Z +  
import org.rut.util.algorithm.SortUtil; '0x`Oh&PK  
D7cOEL<  
/** z!27#gbL  
* @author treeroot Gs%IZo_  
* @since 2006-2-2 1><\3+8  
* @version 1.0 j(/Bf m  
*/ G%~=hEK0  
public class HeapSort implements SortUtil.Sort{ .kh%66:  
Dgh|,LqUB  
/* (non-Javadoc) S@]7   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~8~B VwZ_  
*/ bHE'R!*  
public void sort(int[] data) { rhY>aj  
MaxHeap h=new MaxHeap(); .b>1u3  
h.init(data); R)?b\VK2$  
for(int i=0;i h.remove(); <cG .V |B  
System.arraycopy(h.queue,1,data,0,data.length); "GoNTM5h  
}  ,!_  
2h0I1a,7  
private static class MaxHeap{ 49n.Gc  
Kd^{~Wlz&z  
void init(int[] data){ ,\Gn  
this.queue=new int[data.length+1]; yZ3/Ia>,  
for(int i=0;i queue[++size]=data; k^AI7H  
fixUp(size); RP'`\| |*  
} f%9EZ+OP  
} -e7|DXj  
7onMKMktM%  
private int size=0; s>z$_  
Jhu<^pjs  
private int[] queue; 6dTq&GZ\  
{H s" "/sb  
public int get() { _.0c~\VA  
return queue[1]; Y W_E,A>h  
} |sz`w^#  
eCdx(4(\a  
public void remove() { Zzr+p.  
SortUtil.swap(queue,1,size--); +aRjJ/*  
fixDown(1); EB jiSQw  
}  !J!zi  
file://fixdown p3O%|)yV  
private void fixDown(int k) { }/BwFB+(/  
int j; ?TLEZlB2"  
while ((j = k << 1) <= size) { 0(#HMBE8  
if (j < size %26amp;%26amp; queue[j] j++; LB%_FT5  
if (queue[k]>queue[j]) file://不用交换 KY/}jJW  
break; w~M5)b  
SortUtil.swap(queue,j,k); KTxdZt  
k = j; 5} |O  
} , M$*c  
} SPW @TF1  
private void fixUp(int k) { d_#\^!9  
while (k > 1) { 2#&9qGR  
int j = k >> 1; hABC rd Em  
if (queue[j]>queue[k]) P$_Y:XI !  
break; >U~.I2sz  
SortUtil.swap(queue,j,k); "{;]T  
k = j; AWC zu5ve  
} :/ns/~5xa:  
} Ne*I$T 5  
xjOy3_Js  
} bT-(lIU  
%Bmi3 =Rr  
} :xZ/c\  
,S;?3?a  
SortUtil: 'dM &~L SQ  
-yfyd$5j  
package org.rut.util.algorithm; D.)$\Caq  
k6rX/ocu  
import org.rut.util.algorithm.support.BubbleSort; * JGm  
import org.rut.util.algorithm.support.HeapSort; #{7=  
import org.rut.util.algorithm.support.ImprovedMergeSort; vIG8m@-!&;  
import org.rut.util.algorithm.support.ImprovedQuickSort; l)D18  
import org.rut.util.algorithm.support.InsertSort; [,Ts;Hy6Q  
import org.rut.util.algorithm.support.MergeSort; < 'op  
import org.rut.util.algorithm.support.QuickSort; ;&e5.K+.Z  
import org.rut.util.algorithm.support.SelectionSort; VuFM jY  
import org.rut.util.algorithm.support.ShellSort; Vi`+2%4  
gwQL9 UYx  
/** lJoMJS;S]}  
* @author treeroot &J^@TgqL^  
* @since 2006-2-2 ^ef:cS$;  
* @version 1.0 K @"m0  
*/ |tz1'YOB  
public class SortUtil { cRz7.9-<  
public final static int INSERT = 1; 5R4h9D5  
public final static int BUBBLE = 2; x(3E#7>1  
public final static int SELECTION = 3; /MTS>[E  
public final static int SHELL = 4; i\2MphS  
public final static int QUICK = 5; U jVo "K  
public final static int IMPROVED_QUICK = 6; l3n* b6  
public final static int MERGE = 7; l0Jpf9Aue  
public final static int IMPROVED_MERGE = 8; NFY,$  
public final static int HEAP = 9; KXcG;b[7n  
K]zBPfx  
public static void sort(int[] data) { FB@c +*1  
sort(data, IMPROVED_QUICK); gqNd@tYI  
} V'pNo&O=  
private static String[] name={ iKV;>gF,)v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E5 H6&XU  
}; jD0^,aiG  
U/,`xA;v>  
private static Sort[] impl=new Sort[]{ $y\'j5nk3  
new InsertSort(), Q`g0g)3w  
new BubbleSort(), m\U@L+L  
new SelectionSort(), ?nrd$,  
new ShellSort(), ^C>i(j&  
new QuickSort(), Lcplc"C  
new ImprovedQuickSort(), ?v#t{e0eQ  
new MergeSort(), MR%M[SK1  
new ImprovedMergeSort(), Rb<aCX  
new HeapSort() 3s\2 9gq  
}; hnL"f[p@gC  
LYGFE jS[  
public static String toString(int algorithm){ V!c{%zd  
return name[algorithm-1];  {"y{V  
} QV+('  
G9z Q{E  
public static void sort(int[] data, int algorithm) { \%&QIe;:k  
impl[algorithm-1].sort(data); B9iH+ ]W  
} 4 u X<sJ*  
|^Try2@  
public static interface Sort { C5i]n? )S  
public void sort(int[] data); Slq=;TDp  
} //Ioh (N  
=NAL*4c+  
public static void swap(int[] data, int i, int j) { O-wR48Q  
int temp = data; ?YXl.yj  
data = data[j]; Sl^HMO  
data[j] = temp; ?F*gFW_k  
} ^o!K0 t*  
} f|?i6.N> f  
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