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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。 cug=k  
插入排序: M4rI]^lJ  
5=@q!8a*  
package org.rut.util.algorithm.support; K%i9S;~  
:$ qa  
import org.rut.util.algorithm.SortUtil; +s$` kl  
/** G)cEUEf d  
* @author treeroot T*pcS'?'  
* @since 2006-2-2 ,.6)y1!  
* @version 1.0 4Kl{^2  
*/ a]NH >d  
public class InsertSort implements SortUtil.Sort{ Ga,+  
2d:IYCl4q  
/* (non-Javadoc) W[BwHNxyg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K-X@3&X}  
*/ Ah#bj8}  
public void sort(int[] data) { hsCts@R  
int temp; 0[L)`7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wks?9 )Is  
} ^VL",Nt  
} ?xX9o  
} 0Tp,b (; n  
3+~m9:9  
} L>@:Xo@  
`%@| sK2  
冒泡排序: 2,T^L (]  
;;f&aujSHD  
package org.rut.util.algorithm.support; +0DPhc  
/u&{=nU  
import org.rut.util.algorithm.SortUtil; o%j[]P@4G  
/U@T#S  
/** #I &#x59  
* @author treeroot w%'8bH!  
* @since 2006-2-2 HuB\92u  
* @version 1.0 LWX,u  
*/ HE BKRpt  
public class BubbleSort implements SortUtil.Sort{ I l2`c}9  
~Y)h[  
/* (non-Javadoc) RvXK?mL4F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :n0czO6 E  
*/ nGoQwKIW  
public void sort(int[] data) { K3*8-Be  
int temp; M dKkj[#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~[[(_C3  
if(data[j] SortUtil.swap(data,j,j-1); mu$0x)  
} =]F;{x  
} 1^v?Ly8  
} <<vT"2Q]  
} K+P:g%M  
%Eq4>o?D  
} myq:~^L ;  
LFwRTY,G  
选择排序: D^-6=@<3KD  
[Z -S0  
package org.rut.util.algorithm.support; a@?2T,$  
+-$Hx5  
import org.rut.util.algorithm.SortUtil; ~[*\YN);  
@hVF}ybp  
/** GeydVT-  
* @author treeroot MGbl-,]  
* @since 2006-2-2 T*3>LY+bb  
* @version 1.0 #Y>os3]  
*/ =}pPr]Cc  
public class SelectionSort implements SortUtil.Sort { N"k IQe*}1  
~tM+!  
/* UB8TrYra  
* (non-Javadoc) L kK# =v  
* ;}W-9=81  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a9%^Jvm"  
*/ rf\A[)<:  
public void sort(int[] data) { &Cykw$s  
int temp; m,|)$R  
for (int i = 0; i < data.length; i++) { 0x1#^dII  
int lowIndex = i; \ )'`F; P  
for (int j = data.length - 1; j > i; j--) { #]vs*Sz  
if (data[j] < data[lowIndex]) { FBk_LEcX  
lowIndex = j; ]>_Ie?L)<  
} v<u`wnt  
} S9VD/  
SortUtil.swap(data,i,lowIndex); lO+6|oF0  
} ]>T4\?aC  
} |A/)b78'u  
6 {j}Z*)m  
} |XV@/ZGl~  
0 v> *P*  
Shell排序: .z6"(?~  
bsosva+  
package org.rut.util.algorithm.support; &aLelJ~  
9snc *<  
import org.rut.util.algorithm.SortUtil; %Bf;F;xuB  
B\mRH V!  
/** b,#lw_U"  
* @author treeroot w$fP$ \+  
* @since 2006-2-2 <n|ayxA)  
* @version 1.0 ==XO:P  
*/ YEiQ`sYKG  
public class ShellSort implements SortUtil.Sort{ Lbwc2Q,.-  
TDY2 M  
/* (non-Javadoc) <RaUs2Q3.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6aMG!_jC  
*/ {1VMwANj  
public void sort(int[] data) { :d{-"RAG"  
for(int i=data.length/2;i>2;i/=2){ !M*$p Qi}  
for(int j=0;j insertSort(data,j,i); XI/LVP,.  
} =bgu2#%Z  
} c8<qn+=%?  
insertSort(data,0,1); =_)yV0  
} \LbBK ~l-I  
VX{9g#y$j  
/** i"Z  
* @param data z7$,m#tw  
* @param j Ng 3r`S"_<  
* @param i zu52]$Vj  
*/ H5J1j*P<d  
private void insertSort(int[] data, int start, int inc) { YQ _]Jv k  
int temp; W[4 V#&Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "MX9h }7  
} tA{B~>  
} 8}_M1w6v  
} ymo].  
[19QpK WM  
} P;7 Y9}  
zxhE9 [`*e  
快速排序: /Y_)dz^@  
/UP1*L  
package org.rut.util.algorithm.support; yR'%UpaE  
QoBM2Q YO  
import org.rut.util.algorithm.SortUtil; !=SBeq  
*+rWn*L  
/** DV5K)m&G  
* @author treeroot +ebmve \+  
* @since 2006-2-2 appWq}db  
* @version 1.0 ^0T DaZDLp  
*/ tsf)+`vt  
public class QuickSort implements SortUtil.Sort{ j.:I{!R#  
-qNun3  
/* (non-Javadoc) !Sj0!\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W9M~2< L  
*/ %}/|/=  
public void sort(int[] data) { tmVGJ+gz  
quickSort(data,0,data.length-1); v3I-i|L<)  
} P g.j]  
private void quickSort(int[] data,int i,int j){ j.O+e|kxU  
int pivotIndex=(i+j)/2; 0E^6"nt7N  
file://swap chs] ,7R  
SortUtil.swap(data,pivotIndex,j); QTLGM-Z  
ww#]i&6  
int k=partition(data,i-1,j,data[j]); H$4 4,8,m  
SortUtil.swap(data,k,j); "xxt_  
if((k-i)>1) quickSort(data,i,k-1); S|pf.l  
if((j-k)>1) quickSort(data,k+1,j); 7B s:u  
(Ee5Af,4  
} *i,@d&J y]  
/** Wfp>BC  
* @param data TRzL":  
* @param i $z \H*  
* @param j )8@|+'q  
* @return ~Kiu " g  
*/  f2.|[  
private int partition(int[] data, int l, int r,int pivot) { .d;|iwl  
do{ }P*x /z~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kC8M2|L  
SortUtil.swap(data,l,r); tcD DX'S  
} 6i7+.#s  
while(l SortUtil.swap(data,l,r); JZ>E<U9&  
return l; J2avt  
} rZ:-%#Q4  
;w(tXcXZ  
} DU|>zO%  
AU3>v  
改进后的快速排序: , aJC7'(  
9kby-A4  
package org.rut.util.algorithm.support; {\p&?  
;&OVV+y  
import org.rut.util.algorithm.SortUtil; ttfCiP$  
U@:h';.  
/** Q4e+vBECkq  
* @author treeroot 2Y1y;hCK  
* @since 2006-2-2 p{0NKyOvU  
* @version 1.0 ]9hXiY  
*/ GJj}|+|  
public class ImprovedQuickSort implements SortUtil.Sort { peD7X:K\s  
^SvGSx i  
private static int MAX_STACK_SIZE=4096; /Dj-@7.C/  
private static int THRESHOLD=10; -J]j=  
/* (non-Javadoc) <1eD*sC?g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _2~+%{/m,  
*/  P0<)E  
public void sort(int[] data) { H{U(Rt]K  
int[] stack=new int[MAX_STACK_SIZE]; 5[0W+W  
'izv[{!n{  
int top=-1; /|LQ?n  
int pivot; h\lyt(.s  
int pivotIndex,l,r; }/J<#}t  
GzEvp  
stack[++top]=0; %*a%F~Ss  
stack[++top]=data.length-1; mV++7DY  
Qy7pM8~h  
while(top>0){ cTa$t :K@  
int j=stack[top--]; 6R#.AD\  
int i=stack[top--]; b-?d(-  
~jD~_JGp  
pivotIndex=(i+j)/2; =Ohro '   
pivot=data[pivotIndex]; T o$D [-  
B1 Y   
SortUtil.swap(data,pivotIndex,j); 0u?Vn N<  
)z!#8s  
file://partition 5H }d\=z  
l=i-1; 9r=yfc!cS  
r=j; <pIel   
do{ HyY ol*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /K :H2?J  
SortUtil.swap(data,l,r); z*e`2n#\  
} ,{Ga7rH*   
while(l SortUtil.swap(data,l,r); `b*x}HP$  
SortUtil.swap(data,l,j); M~l\rg8  
vn1*D-?  
if((l-i)>THRESHOLD){ .kc{)d*0K  
stack[++top]=i; 5b$QXO  
stack[++top]=l-1; }DFZ9,gQ  
} (q}{;  
if((j-l)>THRESHOLD){ ,Q,3^v-  
stack[++top]=l+1; o-+H-  
stack[++top]=j; AB=Wj*f r  
} b NR@d'U  
2Kz407|'  
} .1F41UyL  
file://new InsertSort().sort(data); WCyjp  
insertSort(data); KMP[Ledr  
} lXip%6c7  
/** hka`STK{  
* @param data 0w!:YB,}  
*/ *0/%R{+S  
private void insertSort(int[] data) { r1a/'+   
int temp; S N ;1F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vl>_;} W7  
} ks7id[~&iY  
} ZmaGp* Wj  
} 3B5 `Y  
0) Q*u  
} ]zh6[0V7V  
Yv"-_  
归并排序: /E^j}H{  
1EQLsg`d^  
package org.rut.util.algorithm.support; ZsN3 MbY  
:RDQP  
import org.rut.util.algorithm.SortUtil; d;v<rw  
.(Tf$V  
/** <(_${zR  
* @author treeroot Gdv{SCV  
* @since 2006-2-2 QRHM#v S  
* @version 1.0 !laOiH  
*/ T)mh  
public class MergeSort implements SortUtil.Sort{ * TByAa{  
qJK-HF:#  
/* (non-Javadoc) N**" u"CX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j$Vtd &  
*/ >K*TgG6!X  
public void sort(int[] data) { rnQ9uNAu  
int[] temp=new int[data.length]; o?><(A|  
mergeSort(data,temp,0,data.length-1); !m?W+ z~J  
} [m6%_3zV  
;"]?&ri  
private void mergeSort(int[] data,int[] temp,int l,int r){ TlpQ9T  
int mid=(l+r)/2; J~lKN <w  
if(l==r) return ; lin  
mergeSort(data,temp,l,mid); O5dBI_  
mergeSort(data,temp,mid+1,r); (d#W3  
for(int i=l;i<=r;i++){ qb KcI+)47  
temp=data; YJ{_%z|U  
} q],/%W  
int i1=l; # 66vkf*  
int i2=mid+1; j1K?QH=e#{  
for(int cur=l;cur<=r;cur++){ >=YQxm}GJ  
if(i1==mid+1) b X4]/4%  
data[cur]=temp[i2++]; lB(P+yY,/'  
else if(i2>r) YzYj/,?r  
data[cur]=temp[i1++]; /Y8{?  
else if(temp[i1] data[cur]=temp[i1++]; }u.1$Y  
else A?H.EZ  
data[cur]=temp[i2++]; %:Y'+!bX  
} hD,@>ky  
} VL2ACv(  
UQ~gjnb[c  
} 3$P GLM  
pXf5/u8&  
改进后的归并排序: H;Gd  
b ix}#M  
package org.rut.util.algorithm.support; SOeRQb'  
ZqfoO!Ta  
import org.rut.util.algorithm.SortUtil; (5>IF,}!L  
28O3N;a  
/** 79Q>t%rD[  
* @author treeroot \&4)['4,  
* @since 2006-2-2  G`NGt_C  
* @version 1.0 #.|MV}6rQ  
*/ 7-c3^5gn{  
public class ImprovedMergeSort implements SortUtil.Sort { X-_0wR  
yTh60U  
private static final int THRESHOLD = 10; +?uZ~VSl  
Kbcr-89Gv~  
/* O>>%lr|  
* (non-Javadoc) 2x:aMWh  
* 9On(b|mT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ICUI0/J  
*/ I=|}%WO#  
public void sort(int[] data) { H#B97IGT  
int[] temp=new int[data.length]; P |;=dX#-  
mergeSort(data,temp,0,data.length-1); (z^9 87G  
} J(kC  
*.zC9Y,  
private void mergeSort(int[] data, int[] temp, int l, int r) { y])z,#%ED  
int i, j, k; U_Am Riy  
int mid = (l + r) / 2; :{x    
if (l == r) o & kgRv[  
return; Rs53R$PIR  
if ((mid - l) >= THRESHOLD) +6\1 d5  
mergeSort(data, temp, l, mid); 9`5qVM1O{  
else qWw{c&{Q],  
insertSort(data, l, mid - l + 1); O],]\M{GL  
if ((r - mid) > THRESHOLD) 7-[^0qS  
mergeSort(data, temp, mid + 1, r); Kr74|W=  
else @mu=7_$U  
insertSort(data, mid + 1, r - mid); D]hwG0Chd  
ItwJL`  
for (i = l; i <= mid; i++) { ;(;{~1~  
temp = data; pF'M  
} zzZ K S  
for (j = 1; j <= r - mid; j++) { ~4u[\&Sh  
temp[r - j + 1] = data[j + mid]; 6q@VkzF  
} AHdh]pfH  
int a = temp[l]; z[De?8=)  
int b = temp[r]; RyZy2^0<  
for (i = l, j = r, k = l; k <= r; k++) { H6i;MQ  
if (a < b) { ZvkBF9d  
data[k] = temp[i++]; {WN??eys,  
a = temp; wj|[a,(r  
} else { >UB ozmF=\  
data[k] = temp[j--]; at5=Zo[bP  
b = temp[j]; );*#s~R  
} P: )YKro]  
} 3L-}B#tI  
} P{o/ /M  
I] 0 D*z  
/** Ugv"A;l  
* @param data Lb%:u5X\D@  
* @param l W3Dtt-)E  
* @param i DeGcS1_?  
*/ hV[=  
private void insertSort(int[] data, int start, int len) { _sC kBDl-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "oo j;  
} 5)<}a&;{  
} uDsof?z  
} lwp(Pq  
} 8eZ^)9m  
Bey|f/ <  
堆排序: 1|3{.Ed  
.eG_>2'1  
package org.rut.util.algorithm.support; KU)~p"0[6]  
^fT?(y_= e  
import org.rut.util.algorithm.SortUtil; *N3X"2X:  
Xjnv8{X  
/** _U`1BmTC2  
* @author treeroot UeN+}`!l  
* @since 2006-2-2 ljw>[wNv  
* @version 1.0 GB` G(a  
*/ av4g/7=  
public class HeapSort implements SortUtil.Sort{ ip2BvN&  
{igVuZ(>en  
/* (non-Javadoc) Evb %<`gd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qn#f:xltu  
*/ l]KxUkA+  
public void sort(int[] data) { -`} d@x  
MaxHeap h=new MaxHeap(); Kf'oXCs  
h.init(data); J?84WS  
for(int i=0;i h.remove(); `HJRXoLySW  
System.arraycopy(h.queue,1,data,0,data.length); 9zD^4j7  
} Sz'JOBp  
ad'C&^o5  
private static class MaxHeap{ TaE&8;H#N  
~t.M!vk  
void init(int[] data){ 7&{[Y^R]"  
this.queue=new int[data.length+1]; D+69U[P_A  
for(int i=0;i queue[++size]=data; 8^av&u$  
fixUp(size); ~91) DNaE  
} 6 xAR:  
} B3-;]6  
DXc3u^ L  
private int size=0; dMjAG7U  
qo62!q  
private int[] queue; M_EXA _  
g=_@j`  
public int get() { >Mc,c(CvU  
return queue[1]; Pq)C(Z  
} d6;"zW|Ec  
>Sua:Uff  
public void remove() { D}6~2j  
SortUtil.swap(queue,1,size--); CiTjRJ-ZW)  
fixDown(1); pv){R;f  
} w8>  
file://fixdown t&L+]I'P3  
private void fixDown(int k) { )H`1CcT  
int j; x,>r}I>^Q  
while ((j = k << 1) <= size) { cuW&X9\m,  
if (j < size %26amp;%26amp; queue[j] j++; P *zOt]T  
if (queue[k]>queue[j]) file://不用交换 X!ad~bt  
break; 92)e/t iP  
SortUtil.swap(queue,j,k); @?\[M9yK  
k = j; =}7[ypQM`]  
} @h";gN  
} Zm~oV?6  
private void fixUp(int k) { Ht!]%  
while (k > 1) { S1oP_A[|  
int j = k >> 1; K`#bLCXEV0  
if (queue[j]>queue[k]) +YK/^;Th  
break; gdkQ h_\  
SortUtil.swap(queue,j,k); =TG[isC/F9  
k = j; ^YwTO/Q|  
} <u%&@G$F>  
} 5 Yf T  
_"R /k`8  
} A6# 5 z  
1Xj>kE:  
} *aT\V64  
)mF;^3  
SortUtil: K,Z_lP_~Vw  
3T7,Y(<V  
package org.rut.util.algorithm; ;R8pVj!1f  
"de3S bj@?  
import org.rut.util.algorithm.support.BubbleSort; ofIw7D*h  
import org.rut.util.algorithm.support.HeapSort; %an&lcoX  
import org.rut.util.algorithm.support.ImprovedMergeSort; N% W298  
import org.rut.util.algorithm.support.ImprovedQuickSort; Uc<j{U ,  
import org.rut.util.algorithm.support.InsertSort; S eTn]  
import org.rut.util.algorithm.support.MergeSort; "[t (u/e  
import org.rut.util.algorithm.support.QuickSort; (c=.?{U  
import org.rut.util.algorithm.support.SelectionSort; }:2GD0Ru  
import org.rut.util.algorithm.support.ShellSort; rS^+y{7  
"hi)p9 _cR  
/** /a:sWmxMT  
* @author treeroot sp'f>F2]  
* @since 2006-2-2 d iGkwKj  
* @version 1.0 #)hJ.0~3  
*/ Bp>Z?"hTe  
public class SortUtil { (viGL|Ogn  
public final static int INSERT = 1; bw& U[|A0%  
public final static int BUBBLE = 2; @K:TGo,%I  
public final static int SELECTION = 3; Q5~Y;0'  
public final static int SHELL = 4; D?:AHj%gW  
public final static int QUICK = 5; ?<"H Io  
public final static int IMPROVED_QUICK = 6; =@E X!]=x  
public final static int MERGE = 7; (h3f$  
public final static int IMPROVED_MERGE = 8; Oj?  |g_  
public final static int HEAP = 9; *8?0vkZZ2  
J;AwC>N  
public static void sort(int[] data) { Y3RaR 9  
sort(data, IMPROVED_QUICK); W+&<C#1|]  
} 1?}5.*j<  
private static String[] name={ u|}p3-z|Y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RC>79e/u<  
}; G&2`c\u{  
!9ytZR*  
private static Sort[] impl=new Sort[]{ ub,GF?9  
new InsertSort(), ) ir*\<6Y=  
new BubbleSort(), WQ>y;fi5/{  
new SelectionSort(), U 3UDA  
new ShellSort(), \2Atm,#4  
new QuickSort(), v@^P4cu;  
new ImprovedQuickSort(), e[)oT  
new MergeSort(), yRF %SWO  
new ImprovedMergeSort(), {InD/l'v6n  
new HeapSort() Zj]jE%AT  
}; C0> Z<z  
'l7ey3B%  
public static String toString(int algorithm){ 4gkaCk{]  
return name[algorithm-1]; U.,_zEbx,  
} 6< T@\E  
y/(60H,{{  
public static void sort(int[] data, int algorithm) { ;VI/iwg  
impl[algorithm-1].sort(data); mufJ@YS#  
} `: R7j f  
7I0[Ii  
public static interface Sort { 4ZAnq{nR4  
public void sort(int[] data); uKL4cr@  
} @j/|U04_ Z  
.Fe_Z)i>h  
public static void swap(int[] data, int i, int j) { [W#M(`}D  
int temp = data; : 3 aZ_  
data = data[j]; R$Or&:E ^  
data[j] = temp; K#>@T<  
} Y_SB3 $])  
} }Jr!a M'  
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