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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。 982$d<0%  
插入排序: MwuH.# Ez  
y?rsfIth`  
package org.rut.util.algorithm.support; s#Le`pGoW  
6?_Uow}  
import org.rut.util.algorithm.SortUtil; 0`x<sjG\q  
/** ecHy. 7H  
* @author treeroot b,c vQD  
* @since 2006-2-2 L$b9|j7  
* @version 1.0 !O5UE  
*/ .,c8cq?  
public class InsertSort implements SortUtil.Sort{ _uBf.Qfs  
!yxb<  
/* (non-Javadoc) a%AU9?/q#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{c (K!  
*/ tly:$;K  
public void sort(int[] data) { PH]q#/'  
int temp; H`y- "L8q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `mMD e  
} /`1zkBj<&  
} 3{%/1>+x5  
} y|@^0]}%<  
H(pOR< `  
} 0trFLX  
';1 c  
冒泡排序: UpgOU.  
nyIb8=f  
package org.rut.util.algorithm.support; H P7Ec  
=v_ju;C=  
import org.rut.util.algorithm.SortUtil; T1x$v,)8x  
ht1 jrCe  
/** U'\\(m|  
* @author treeroot =3}+f-6"'  
* @since 2006-2-2 v9<p@GY"\  
* @version 1.0 pG" 4qw  
*/ Ad"::&&Wk  
public class BubbleSort implements SortUtil.Sort{ b*bR<|dTj  
^iGIF~J9  
/* (non-Javadoc) GxvVh71zP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @}FRiPo6  
*/ HloP NE&}  
public void sort(int[] data) { BFMM6-Ve  
int temp;  V C.r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ E J 9A 4B  
if(data[j] SortUtil.swap(data,j,j-1); MM97$  
} v!x=fjr<  
} o$Jk2 7  
} t'z] <7  
} %TLAn[LW(  
uU<Yf5  
} bk8IGhO|m!  
D.HAp+lx  
选择排序: >6aCBS?2  
E&97;VH  
package org.rut.util.algorithm.support; :!3P4?a  
*fjarZu  
import org.rut.util.algorithm.SortUtil; 7ed*dXY*  
=B; )h  
/** M HgS5b2  
* @author treeroot x.d9mjLN8m  
* @since 2006-2-2 !D  
* @version 1.0 'dx4L }d  
*/ H\O|Y@uVr  
public class SelectionSort implements SortUtil.Sort { 1XSqgr"3  
V-jo2+Y5=  
/* p HWol!  
* (non-Javadoc) Uqkh@-6-  
* *{C)o0D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q,s,EooIx  
*/ :}E*u^v K  
public void sort(int[] data) { QJ$]~)w?H  
int temp; MY0Wr%@#0  
for (int i = 0; i < data.length; i++) { vK6bpzI 3  
int lowIndex = i; OnG!5b  
for (int j = data.length - 1; j > i; j--) { (US8Sc  
if (data[j] < data[lowIndex]) { 1Og9VG1^  
lowIndex = j; +[cm  
} oiklRf  
} K<V(h#(.@  
SortUtil.swap(data,i,lowIndex); /R^!~J50  
} s$RymM  
} 6jKM,%l  
z`TI<B  
} GA;E (a  
|ejrE,~1vb  
Shell排序: Uz1u6BF  
1Ce:<.99B  
package org.rut.util.algorithm.support; i~\gEMaO  
F`Pu$>8C  
import org.rut.util.algorithm.SortUtil; Q(%uDUg%  
,PY<AI^59  
/** FCI38?`%  
* @author treeroot u<+;]8[o  
* @since 2006-2-2 >;HXH^q  
* @version 1.0 (/uL6W d0  
*/ %,>,J`  
public class ShellSort implements SortUtil.Sort{ |FKo}>4  
v}iJ :'  
/* (non-Javadoc) #ReW#?P%b/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =r GkM.^  
*/ YXBS!89m  
public void sort(int[] data) { $-o39A#  
for(int i=data.length/2;i>2;i/=2){ G"J6X e  
for(int j=0;j insertSort(data,j,i); !4 6 ^}3  
} :CH'Bt4<  
} 4$_8#w B1&  
insertSort(data,0,1); 'o5[ :=K  
} LxMOs Nv  
 gs9f2t  
/** GF k?Qf{u  
* @param data !vG._7lPp  
* @param j >.B+xn =  
* @param i 1P6~IZVN  
*/ YP#OI 6u  
private void insertSort(int[] data, int start, int inc) { 0{Tf;a<  
int temp; CMTy(Z8_)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xv1$,|^ts  
} % 3FI>\3  
} '"I"D9;9  
} O1/!)E!  
@^`-VF  
} /ZD/!YD&R  
ay4|N!ExO  
快速排序: ^B5Hjf9  
QAX+oy  
package org.rut.util.algorithm.support; 1)k))w9  
G|H\(3hHLZ  
import org.rut.util.algorithm.SortUtil; Y/{Z`}  
6#dx%TC  
/** .}j@(D  
* @author treeroot \QHM7C T  
* @since 2006-2-2 jQf1h|e  
* @version 1.0 \*_qP*vq@  
*/ sba0Q[IY  
public class QuickSort implements SortUtil.Sort{ VeCpz[r  
KX*e2 /0  
/* (non-Javadoc) LZ^sc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zu*h9}  
*/ d'DS7F(c{  
public void sort(int[] data) { P^&+ehp  
quickSort(data,0,data.length-1); )Q9J,  
} vn|X,1o  
private void quickSort(int[] data,int i,int j){ pvcf_w`n  
int pivotIndex=(i+j)/2; 1OJ:Vy}n  
file://swap {_Wtk@  
SortUtil.swap(data,pivotIndex,j); ab 2 V.S  
mQ1QJ_;  
int k=partition(data,i-1,j,data[j]); d{DlW |_  
SortUtil.swap(data,k,j); [rGR1>U?i  
if((k-i)>1) quickSort(data,i,k-1); *mBn''a"*  
if((j-k)>1) quickSort(data,k+1,j); .i`+}@iA  
u*H2kn[DU  
} `t#C0  
/** 3{,Mpb@  
* @param data J&h 3,  
* @param i k \]@  
* @param j Be-gGJG  
* @return =(zk-J<nY  
*/ `(16_a  
private int partition(int[] data, int l, int r,int pivot) { G.c s-f  
do{ 3DgI.V6un  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 48w3gye  
SortUtil.swap(data,l,r); a!wPBJJ  
} Xa%Z0% {  
while(l SortUtil.swap(data,l,r); ,P5HR+h  
return l; yUBic~S  
} <sd Qvlx$-  
XMuZ 'I  
} im*XS@Uj  
s2&UeYbIs  
改进后的快速排序: arDY@o~  
{jr>Z"/q  
package org.rut.util.algorithm.support; w)3LYF  
w=O:|Xu#*  
import org.rut.util.algorithm.SortUtil; n j1 cqh  
mnG\UK,k  
/** RkC?(p  
* @author treeroot aiUn bP  
* @since 2006-2-2 `\#Q r|GC  
* @version 1.0 u;y1leG  
*/ 9KCnitU  
public class ImprovedQuickSort implements SortUtil.Sort { <w08p*?  
At.WBa3j%{  
private static int MAX_STACK_SIZE=4096; CYG'WFvZZ  
private static int THRESHOLD=10; I%p Q2T$;  
/* (non-Javadoc) #F[6$. Gr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =OhhMAn  
*/ Bg;bBA!L  
public void sort(int[] data) { b>;5#OQfn  
int[] stack=new int[MAX_STACK_SIZE]; l--xq^,`o]  
Z<xSU?J  
int top=-1; .viA+V  
int pivot; $eI[3{}X  
int pivotIndex,l,r; H2rh$2  
"xYMv"X  
stack[++top]=0; {}vW=  
stack[++top]=data.length-1; lD\lFN(:  
'X{7b <  
while(top>0){ F;`es%8  
int j=stack[top--]; )p ,-TtV  
int i=stack[top--]; hoeOdWI pf  
i^="*t\i  
pivotIndex=(i+j)/2; , lT8gQ|u  
pivot=data[pivotIndex]; :9]23'Md  
NIQa{R/H  
SortUtil.swap(data,pivotIndex,j); H=7dp%b"  
z_r W1?|  
file://partition %k1*&2"1#  
l=i-1; C$M^<z  
r=j; '$l*FWOEal  
do{ (w@|:0t^y[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @v@'8E Q  
SortUtil.swap(data,l,r); '}LH,H:%G  
} 'j>^L  
while(l SortUtil.swap(data,l,r); 90teXxg=|  
SortUtil.swap(data,l,j); {/ZB>l@D>8  
PDM>6U  
if((l-i)>THRESHOLD){ 69\0$O  
stack[++top]=i; !=I:Uc-Y  
stack[++top]=l-1; pO=bcs8Z  
} 0nG& LL5  
if((j-l)>THRESHOLD){ <)y'Ot0 y  
stack[++top]=l+1; z{;W$SO 2  
stack[++top]=j; O:pQf/Xn  
} nvgo6*  
Sr%~ 5Q[W  
} Ow+7o@$"/  
file://new InsertSort().sort(data); ]X@/0  
insertSort(data); wf<uG|90  
} {I`B?6K5  
/** Iu%/~FgPj{  
* @param data ukvz#hdE  
*/ j^986  
private void insertSort(int[] data) { g)xzy^2e  
int temp; Y==# yNwM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SAly~(r?/  
} |M0 XLCNd_  
} hW _NARA  
} +1F@vag7  
li,kW`j+t  
} oa1&9  
l&U3jeW-o  
归并排序: eHd{'J<  
[uZU p*.V  
package org.rut.util.algorithm.support; oKzV!~{0M;  
3l<)|!f]g  
import org.rut.util.algorithm.SortUtil; st/Tb/  
DlfXzKn;  
/** W>;AMun  
* @author treeroot nolTvqMT  
* @since 2006-2-2 ]N2'L!4|;  
* @version 1.0 `[57U,v  
*/ rx|/]NE;  
public class MergeSort implements SortUtil.Sort{ H*;J9{  
*!'00fv  
/* (non-Javadoc) SS(jjpe&,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 75I* &Wl  
*/ >3 qy'lm  
public void sort(int[] data) { ;cxYX/fJ  
int[] temp=new int[data.length]; At+on9&=  
mergeSort(data,temp,0,data.length-1); KDg!Y(m{  
} rQN+x|dKMb  
%+xh  
private void mergeSort(int[] data,int[] temp,int l,int r){ lT1*e(I  
int mid=(l+r)/2; I{B8'n{cN  
if(l==r) return ; klv^310  
mergeSort(data,temp,l,mid); Scxf5x-  
mergeSort(data,temp,mid+1,r); Y2<Z"D`  
for(int i=l;i<=r;i++){ LEHlfB#z`@  
temp=data; |I85]'K9a  
} q35%t61Lc  
int i1=l; 0v+5&Jk  
int i2=mid+1; <J[*~v%(  
for(int cur=l;cur<=r;cur++){ &{ntx~Eq  
if(i1==mid+1) };29'_.."x  
data[cur]=temp[i2++]; k&yy_r   
else if(i2>r) {K_YW  
data[cur]=temp[i1++]; /0Zwgxt4?7  
else if(temp[i1] data[cur]=temp[i1++]; q\d'}:kfu  
else &'T7 ~M:  
data[cur]=temp[i2++]; cf@:rHB}  
} h#;fBQ]   
} \AkeC6[D  
E2!;W8M  
} }^)M)8zS  
!\+SE"ml  
改进后的归并排序: gHYYxhW$  
B6OggJ9Iq  
package org.rut.util.algorithm.support; O#cXvv]Z*  
tdZ:w  
import org.rut.util.algorithm.SortUtil; [4PG_k[uTJ  
vnXpC!1  
/** XW5r@:e  
* @author treeroot mbJ#-^}V  
* @since 2006-2-2 VEE:Z^U!  
* @version 1.0 PyzW pf  
*/ 9.SPxd~  
public class ImprovedMergeSort implements SortUtil.Sort { pz.<5  
j31 Sc3vG  
private static final int THRESHOLD = 10; yd`.Rb&V  
f0MHh5  
/* R"=G?d)  
* (non-Javadoc) @qg=lt|(F  
* 1fEV^5I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V"T;3@N/4  
*/ cnhYrX^  
public void sort(int[] data) { 5 F H#)  
int[] temp=new int[data.length]; Q9FY.KUM  
mergeSort(data,temp,0,data.length-1); {Qlvj.Xw  
} \>:(++g  
cz&FOP+!  
private void mergeSort(int[] data, int[] temp, int l, int r) { rw8db'  
int i, j, k; oNl_r:G  
int mid = (l + r) / 2; $;$_N43  
if (l == r) GJ{]}fl  
return; qo$<&'r  
if ((mid - l) >= THRESHOLD) nyTfTn  
mergeSort(data, temp, l, mid); Ql [ =  
else <@@.~Qm'  
insertSort(data, l, mid - l + 1); 83)2c a  
if ((r - mid) > THRESHOLD) YujhpJ<  
mergeSort(data, temp, mid + 1, r); j.AAY?L  
else <7?MutHM-  
insertSort(data, mid + 1, r - mid); H[!by)H  
iMJjWkk  
for (i = l; i <= mid; i++) { %UgyGQeo  
temp = data; LxsB.jb-  
} v3.JG]zLpP  
for (j = 1; j <= r - mid; j++) { eUx|_*`  
temp[r - j + 1] = data[j + mid]; Y~fds#y0  
} S(9fGh  
int a = temp[l]; ]e)<CE2   
int b = temp[r]; 9J0m  
for (i = l, j = r, k = l; k <= r; k++) { U,aV {qz  
if (a < b) { ^ 8egn|  
data[k] = temp[i++]; gQ,PG  
a = temp; /':kJOk<[  
} else {  A5Y z|  
data[k] = temp[j--]; S :9zz  
b = temp[j]; b_cD >A  
} <:>a51HBX  
} :2K0/@<x  
} Z`q?pE>R  
@/B&R^aVZ  
/** b.;F)(  
* @param data hZc$`V=R  
* @param l xNE<$Bz  
* @param i !XzRV?Ih;  
*/ R9fM9  
private void insertSort(int[] data, int start, int len) { /R 2:Js  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); u@[D*c1!H  
} vKol@7%N  
} a&wl-  
} BEifUgCh  
} z/6eP`jj  
O6l j^  
堆排序: Ol D]*=.cO  
J?u@' "u  
package org.rut.util.algorithm.support; `?91Cw=`  
5A:b \  
import org.rut.util.algorithm.SortUtil; |BF4 F5wC?  
D{ @x  
/** F.^1|+96  
* @author treeroot >$?$&+e}  
* @since 2006-2-2 iI&J_Y{1a_  
* @version 1.0 yC6XO&:g  
*/ yH@W6'.  
public class HeapSort implements SortUtil.Sort{ I>b!4?h  
b":cj:mxL  
/* (non-Javadoc) YM/GSSq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rb|\!  
*/ 1+.(N:) +  
public void sort(int[] data) { "qR qEpD%  
MaxHeap h=new MaxHeap(); "4oY F:h  
h.init(data); =<n+AqJ%  
for(int i=0;i h.remove(); *siS4RX2  
System.arraycopy(h.queue,1,data,0,data.length); |*i0h`a  
} W?5^cEF  
qZG "{8  
private static class MaxHeap{ vfcj,1  
Mm+_>   
void init(int[] data){ 50Pz+:  
this.queue=new int[data.length+1]; Q V4{=1A  
for(int i=0;i queue[++size]=data; O: :X$O7  
fixUp(size); e>z3 \4  
} pDrM8)r  
} ORyFE:p$  
8;-a_VjA)  
private int size=0; &0*j nb  
x.xfMM2n  
private int[] queue; D CcM~  
'8}*erAg  
public int get() { ja#E}`wC4  
return queue[1]; W;eHDQ|  
} W`C2zbC  
s+h`,gg9  
public void remove() { BC 9rsb  
SortUtil.swap(queue,1,size--); <Gr{h>b  
fixDown(1); Qt+ K,LY  
} A"2k,{d  
file://fixdown OB>Pk_eQK  
private void fixDown(int k) { gj0gs  
int j; NYm2fFPc  
while ((j = k << 1) <= size) { q1.w8$  
if (j < size %26amp;%26amp; queue[j] j++; y4w{8;Mh  
if (queue[k]>queue[j]) file://不用交换 Vf`1'GY  
break; "U4Sn'&h@  
SortUtil.swap(queue,j,k); 4b,N"w{v  
k = j; {%)bxk6  
} fnN"a Z  
} LIT{rR#8  
private void fixUp(int k) { Gp6|M2Vu_5  
while (k > 1) { b(wW;C'#0p  
int j = k >> 1; C;-9_;&  
if (queue[j]>queue[k]) !X e  
break; pGc_Klq  
SortUtil.swap(queue,j,k); `lRZQ:27X  
k = j; F%UyFUz  
} N~=p+Ow[H  
} ts<5%{M(  
CC;T[b&  
} c0sU1:e0  
y9cW&rDH  
} <w}YD @(f  
2,{m>fF  
SortUtil: ypSW9n  
1(CpTaa  
package org.rut.util.algorithm; WV]Si2pOZ  
<7~HG(ks  
import org.rut.util.algorithm.support.BubbleSort; BA4qQCS;5  
import org.rut.util.algorithm.support.HeapSort; }S\\"SBC  
import org.rut.util.algorithm.support.ImprovedMergeSort; m-xSF]q=<  
import org.rut.util.algorithm.support.ImprovedQuickSort; h# c.HtVE  
import org.rut.util.algorithm.support.InsertSort; %AwR4"M  
import org.rut.util.algorithm.support.MergeSort; C (L1  
import org.rut.util.algorithm.support.QuickSort; F.<sKQ&A  
import org.rut.util.algorithm.support.SelectionSort; l{[{pAm  
import org.rut.util.algorithm.support.ShellSort; R4.$9_ ui  
OlL FuVR  
/** P:eY>~m<;  
* @author treeroot q"7rd?r52  
* @since 2006-2-2 2MS1<VKZ@  
* @version 1.0 ^oDCF  
*/ \dO9nwa?  
public class SortUtil { 52 ? TLID  
public final static int INSERT = 1; _WO*N9Iz  
public final static int BUBBLE = 2; gXBC= ?jl  
public final static int SELECTION = 3; Q x}\[  
public final static int SHELL = 4; >k)}R|tJ  
public final static int QUICK = 5; &ejJf{id  
public final static int IMPROVED_QUICK = 6; !ba /] A/  
public final static int MERGE = 7; TPEg>[  
public final static int IMPROVED_MERGE = 8; i0; p?4`m  
public final static int HEAP = 9; *p0n{F9  
l*V]54|ON3  
public static void sort(int[] data) { t}n:!v"|+O  
sort(data, IMPROVED_QUICK); $$ma1.t"  
} ca%s$' d  
private static String[] name={ #usi1UWB#Q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :y^0]In  
}; 'id] <<F  
f_2tMiy 5  
private static Sort[] impl=new Sort[]{ \Ld/'Z;w  
new InsertSort(), DC4O@"  
new BubbleSort(), _+7 3Y'  
new SelectionSort(), Y7g^ ?6  
new ShellSort(), kcGs2Y_*&  
new QuickSort(), 7VQ|3`!<  
new ImprovedQuickSort(), Sqw:U|h\FS  
new MergeSort(), 2Hl0besm  
new ImprovedMergeSort(), I-<U u 2  
new HeapSort() TJjcX?:(  
}; :)hS-*P  
rG)K?B~  
public static String toString(int algorithm){ /R\]tl#2j  
return name[algorithm-1]; QT)D|]bH  
} wq+%O,  
gx,BF#8}  
public static void sort(int[] data, int algorithm) { &Z3g$R 9  
impl[algorithm-1].sort(data); 6a$=m3ic  
} x$ z9:'U  
k@vN_Un  
public static interface Sort { oRH ]67(Z  
public void sort(int[] data); .h O ) R.  
} /E8{:>2  
Jse;@K5y  
public static void swap(int[] data, int i, int j) { CEbZj z|  
int temp = data; aly1=j  
data = data[j]; 2I DN?Mw  
data[j] = temp; 3<">1] /,  
} @ )nxX))a  
} kYMKVR  
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