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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。 ;g~TWy^o  
插入排序: Op_RzZP`  
H=\3Jj(4  
package org.rut.util.algorithm.support; I}t#%/'YA  
}X=[WCK U  
import org.rut.util.algorithm.SortUtil; ?yj6CL(,  
/** lIProF0  
* @author treeroot Jej` ;I  
* @since 2006-2-2 4fKC6UR  
* @version 1.0 'z$Q rFW  
*/ Jm42b4  
public class InsertSort implements SortUtil.Sort{ 4 M(-xl?  
,13Lq-  
/* (non-Javadoc) 65Cg]Dt71  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R%'^gFk 8  
*/ [3@):8  
public void sort(int[] data) { J2^'Xj_V  
int temp; x l#LrvxI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }oNhl^JC  
} n+PzA[  
} 0D&t!$Ibf  
} DS)RX.k_#  
a|?4 )  
} VhNz8)  
Iyyh!MVF  
冒泡排序: d,=r 9.  
q5#J~n8Wr  
package org.rut.util.algorithm.support; nG;8:f`  
xQ@^$_  
import org.rut.util.algorithm.SortUtil; AU$Uxwz4  
_~T!9  
/** 'CN|'W)g7  
* @author treeroot *;fw%PW  
* @since 2006-2-2 =|YxDas  
* @version 1.0 QPfc(Z  
*/ ^6_Cc  
public class BubbleSort implements SortUtil.Sort{ s%W<dDINl  
sx`O8t  
/* (non-Javadoc) QV&D l_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3l#IPRn9AO  
*/ uxzze~_+C  
public void sort(int[] data) { qk;{cfzHA  
int temp; 6C+"`(u%V  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ) lZp9O  
if(data[j] SortUtil.swap(data,j,j-1); ?G -e](]^<  
} _C`K*u 6Z<  
} sUU{fNC6|  
} zNIsf "  
} 1SR+m>pL  
qIAoA .  
} gwWN%Z"  
0eS)&GdR  
选择排序: pb=cBZ$  
7__Q1 > o  
package org.rut.util.algorithm.support; 4'LB7}WG  
&Y^WP?HS  
import org.rut.util.algorithm.SortUtil; yfC^x%d7G  
1hziXC0WY  
/** NvvUSyk\;s  
* @author treeroot ;asP4R=  
* @since 2006-2-2 :.45u}[  
* @version 1.0 }~Af/  
*/ ~PHB_cyth  
public class SelectionSort implements SortUtil.Sort { B!\;/Vk  
}eRD|1  
/* WuZ/C_  
* (non-Javadoc) w18y}mS"H  
* :"!9_p(,,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 14"J d\M8  
*/ hc'-Dh  
public void sort(int[] data) { %Pqf{*d8  
int temp; 1M}&ZH  
for (int i = 0; i < data.length; i++) { :G<E^<M\)^  
int lowIndex = i; !1G."fo  
for (int j = data.length - 1; j > i; j--) { S!sqbLrBn  
if (data[j] < data[lowIndex]) { $VxA0 =ad  
lowIndex = j; .({smN,B  
} ?:L:EW8  
} mb!9&&2 -t  
SortUtil.swap(data,i,lowIndex); I*`*Q$  
} 8{Fsm;UsY  
} dH^<t,v  
V.{H9n]IO  
} ;jipe3LU  
J:kmqk!  
Shell排序: \l@,B +)  
($~RoQ=0S  
package org.rut.util.algorithm.support; e@ \p0(  
Bdu&V*0g  
import org.rut.util.algorithm.SortUtil; ZPD[5) ~  
Cj?L@%"  
/** RJ$7XCY%`*  
* @author treeroot FSRj4e1y1  
* @since 2006-2-2 Kk{<@v)  
* @version 1.0 gL3"Gg3  
*/ $&2UTczp  
public class ShellSort implements SortUtil.Sort{ j8sH#b7Z  
Zw~+Pb  
/* (non-Javadoc) uy}%0vLo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `3Uj{w/Q:L  
*/ Q pmsOp|  
public void sort(int[] data) { E=#0I]v[  
for(int i=data.length/2;i>2;i/=2){ %bdjBa}  
for(int j=0;j insertSort(data,j,i); (~J^3O]Fo  
} 4DOK4{4?5  
} <Engi!  
insertSort(data,0,1); tu5*Qp\  
} H~E(JLcU  
1Zi,b  
/** r]0 lo-  
* @param data 5A4&+rdU  
* @param j ~D|5u\D-  
* @param i +EAT:,  
*/ ;IpT} ,  
private void insertSort(int[] data, int start, int inc) { pm6>_Kz  
int temp; (X?/"lC)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q`G,L(  
} P06R JE  
} ?]4>rl}  
} LvEnXS  
]]"jw{W}A  
} Zx d~c]n  
Z?O *'#yn  
快速排序: K_ ci_g":  
C*G=cs\i  
package org.rut.util.algorithm.support; D3x/OyG(  
oaK%Ww6~  
import org.rut.util.algorithm.SortUtil; t>uN'oCyC  
=Z+nX0qF  
/** 7YAIA%8  
* @author treeroot LB.co4  
* @since 2006-2-2 "hQ_sgz[Z  
* @version 1.0 o'$jNciOW  
*/ f +hjC  
public class QuickSort implements SortUtil.Sort{ JXj8Br?Z@  
"jaJr5Wv=y  
/* (non-Javadoc) NVl [kw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M BXBog7U  
*/ XJ Iv1s\g  
public void sort(int[] data) { sIv)'  
quickSort(data,0,data.length-1); `~W-Xx  
} 7^Yk`Z?|a  
private void quickSort(int[] data,int i,int j){ wm+})SOX9  
int pivotIndex=(i+j)/2; Rtjqx6-B;  
file://swap I=!rbF;Z  
SortUtil.swap(data,pivotIndex,j); l]]l  
+GAf O0  
int k=partition(data,i-1,j,data[j]); "rAY.E]  
SortUtil.swap(data,k,j); oY=q4D  
if((k-i)>1) quickSort(data,i,k-1); VG>vn`x>a  
if((j-k)>1) quickSort(data,k+1,j); Z,.G%"i3C  
5~yNqC  
} x[Wwq=~  
/** 7jJbo]&  
* @param data ^`D=GF^tX  
* @param i L.=w?%:H=  
* @param j g5q$A9.Jl  
* @return w2xG_q  
*/ u@3y&b  
private int partition(int[] data, int l, int r,int pivot) { A?*o0I  
do{ o5n^!gi4  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v-! u\  
SortUtil.swap(data,l,r); c   c  
} HQ9X7[3  
while(l SortUtil.swap(data,l,r); W<<9y  
return l; ~RD+.A  
} ]1gx#y 2  
YKa0H%B(  
} ~j'l.gQb  
"p3_y`h6+  
改进后的快速排序: 9TAj) {U%'  
v{ <[)cr  
package org.rut.util.algorithm.support;  P5gN#G  
[+Y{%U  
import org.rut.util.algorithm.SortUtil; ]LZ`LL'#Y_  
k;5Pom  
/** [0UGuj  
* @author treeroot eVl'\aUd  
* @since 2006-2-2 J/6`oh?,Q  
* @version 1.0 :ZDMNhUl &  
*/ 178Mb\8  
public class ImprovedQuickSort implements SortUtil.Sort { 9RwawTM  
/(8a~f&%r  
private static int MAX_STACK_SIZE=4096; nP UqMn'  
private static int THRESHOLD=10; tW;:-  
/* (non-Javadoc) pDh se2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \sA*V%n  
*/ }!i` 0p  
public void sort(int[] data) { ,Os? f:Y6  
int[] stack=new int[MAX_STACK_SIZE]; 7zTqNnPnf  
p*l$Wj  
int top=-1; !JBae2Z  
int pivot; {5|("0[F  
int pivotIndex,l,r; Ac|5. ?|N  
gip/(/NX  
stack[++top]=0; RB?V7uX  
stack[++top]=data.length-1; T%R:NQf  
?tg  y|  
while(top>0){ `O6:t\d@  
int j=stack[top--]; k6Cn"2q <  
int i=stack[top--]; ~l~Tk6EM  
fj,m  
pivotIndex=(i+j)/2; KL'zXkS  
pivot=data[pivotIndex]; <:|3rfm#  
g-vg6@6  
SortUtil.swap(data,pivotIndex,j); KTEZ4K^o=  
ggb |Ew  
file://partition $c&0F,   
l=i-1; 8Q)@  
r=j; 26n^Dy>}  
do{ ^ZTGJ(j7~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,1/}^f6  
SortUtil.swap(data,l,r); S|B$c E  
}  H@uE>  
while(l SortUtil.swap(data,l,r); EC6k{y}bA  
SortUtil.swap(data,l,j); 3I 0eW%,  
4@;-%H&7  
if((l-i)>THRESHOLD){ @$eT~ C  
stack[++top]=i; _KD5T4FZR  
stack[++top]=l-1; 4l8BQz}sb  
} +1 eCvt:,  
if((j-l)>THRESHOLD){ +2C?9:bH  
stack[++top]=l+1; JmpsQ,,  
stack[++top]=j; Ov82ibp_1  
} #2xSyOrmf  
;o<m}bGaT  
} Tx%VU8\?n  
file://new InsertSort().sort(data); 6*@yE  
insertSort(data); Vga-@  
} 2yo cu!4l  
/** (ozb%a#B  
* @param data  O3NWXe<  
*/ o0z67(N&g  
private void insertSort(int[] data) { W2wpcc  
int temp; 4O{Avt7C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nkeI60  
} La[K!u\B  
} UF__O.l__  
} ]|:uU  
vs&8wbS)  
} Dmdy=&G  
8n?kZY$,  
归并排序: f*xpE`&  
<JI& {1  
package org.rut.util.algorithm.support; 1MA@JA:T  
%|XE#hw  
import org.rut.util.algorithm.SortUtil; Rn+4DcR  
1QJBb \  
/** ~=y3Gd B3  
* @author treeroot !#?kWAU  
* @since 2006-2-2 J0220 _  
* @version 1.0 8rbG*6  
*/ ;Pb8YvG1$  
public class MergeSort implements SortUtil.Sort{ gd^Js 1Z  
{b!7 .Cd=  
/* (non-Javadoc) w36(p{#vp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w>~M}Ahj  
*/ D!TZI  
public void sort(int[] data) { CL7Nr@  
int[] temp=new int[data.length]; ~0-g%C?R  
mergeSort(data,temp,0,data.length-1); ?q91:H   
} vi {uy  
CV.+P-  
private void mergeSort(int[] data,int[] temp,int l,int r){ u@.>WHQN  
int mid=(l+r)/2; VS/;aG$&y  
if(l==r) return ; PK rek  
mergeSort(data,temp,l,mid); CP` XUpX`&  
mergeSort(data,temp,mid+1,r); (xyS7q]m  
for(int i=l;i<=r;i++){ {)K](S ~  
temp=data; FEm=w2  
} =7ydk"xM*  
int i1=l; h ; kfh.  
int i2=mid+1; )%JD8;[Jq  
for(int cur=l;cur<=r;cur++){ <`g3(?   
if(i1==mid+1) =K$,E4*  
data[cur]=temp[i2++]; F;D1F+S  
else if(i2>r) S_8r\B[>P  
data[cur]=temp[i1++]; (a{ZJI8_  
else if(temp[i1] data[cur]=temp[i1++]; >xd<YwXZ  
else W8aU "_  
data[cur]=temp[i2++]; RazBc.o<  
}  . gT4_  
} YL^Z4: p  
# .q#O C  
} u.6P-yh  
u3ds QU  
改进后的归并排序: x0Bw{>Q  
,8 6K  
package org.rut.util.algorithm.support; /)V4k:#b  
[BXyi  
import org.rut.util.algorithm.SortUtil; uu}-"/<~7  
 wRVD_?  
/** MD'>jO;n  
* @author treeroot YU\Gj S~>&  
* @since 2006-2-2 &:!ij  
* @version 1.0 ?q%b*Ek  
*/ FDLd&4Ex  
public class ImprovedMergeSort implements SortUtil.Sort { V-vlTgemwc  
<TjBd1  
private static final int THRESHOLD = 10; zk>h u<_  
%2yAvGa1  
/* ]*ov&{'  
* (non-Javadoc) D<nxr~pQ  
* 1!/-)1t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jp m#hH{R  
*/ |%ZpatZA5  
public void sort(int[] data) { fS./y=j(X  
int[] temp=new int[data.length]; 6GKT yN  
mergeSort(data,temp,0,data.length-1); JE)J<9gf  
} f9'] jJ+  
%3,xaVN  
private void mergeSort(int[] data, int[] temp, int l, int r) { +"L$ed(=nJ  
int i, j, k; "=A|K~b  
int mid = (l + r) / 2; B| Q6!  
if (l == r) c)3O/`  
return; ahp1!=Z-=  
if ((mid - l) >= THRESHOLD) t:9 ZCu ay  
mergeSort(data, temp, l, mid); },6*Y*?{  
else J~dTVBx  
insertSort(data, l, mid - l + 1); o>!JrH  
if ((r - mid) > THRESHOLD) N5\{yV21",  
mergeSort(data, temp, mid + 1, r); #Wx=v$"  
else OROqT~6G  
insertSort(data, mid + 1, r - mid); ylkqhs&  
d;g-3Pf  
for (i = l; i <= mid; i++) { vPsq<l}  
temp = data;  ^Fp=y,D  
} #{w5)|S#JD  
for (j = 1; j <= r - mid; j++) { g8Aj `O  
temp[r - j + 1] = data[j + mid]; D-iUN  
} lJj&kVHb  
int a = temp[l]; MOLO3?H(  
int b = temp[r]; #HDesen  
for (i = l, j = r, k = l; k <= r; k++) { !Mil?^  
if (a < b) { _m7c o :  
data[k] = temp[i++]; {]M>Y%j48  
a = temp; )G4rJ~#@  
} else { ;KS`,<^-  
data[k] = temp[j--]; ;fx1!:;.  
b = temp[j]; irmwc'n]  
} hfh.eL  
} x3;jWg~'  
} lE a W7j  
acP ;(t  
/** DvJB59:_}  
* @param data eE,;K1  
* @param l O*4gV}:G  
* @param i ?'f^X$aS  
*/ 1 mHk =J~  
private void insertSort(int[] data, int start, int len) { pVz pN8!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tnL."^%A2I  
} 1g81S_T .  
} gA"<MI'y  
} +{Gw9h"5g*  
} N&N 82OG  
=g[H]-Ee  
堆排序: M1gP R  
X{'wWWZC  
package org.rut.util.algorithm.support; &%}6q]e  
X?kPi&ru  
import org.rut.util.algorithm.SortUtil; rr)9Y][l}  
[>wzl"cHW  
/** EaCZx  
* @author treeroot cb4b, Ri  
* @since 2006-2-2 1{7_ `[  
* @version 1.0 =<>pKQ)[  
*/ wmiafBA e  
public class HeapSort implements SortUtil.Sort{ s79 q 5  
@[0jFjK  
/* (non-Javadoc) VlV)$z_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) excrXx  
*/ :SQ LfOQ  
public void sort(int[] data) { bCt_y R  
MaxHeap h=new MaxHeap(); w0$R`MOR+  
h.init(data); w@2~`<Hk'"  
for(int i=0;i h.remove(); tNYJQ  
System.arraycopy(h.queue,1,data,0,data.length); u IF$u  
} 6_Fpca3L  
*<?XTs<  
private static class MaxHeap{ :;<\5Oy ^  
j]#wrm  
void init(int[] data){ 5(KG=EHj_  
this.queue=new int[data.length+1]; $Llv p bl  
for(int i=0;i queue[++size]=data; b_ypsGE]5!  
fixUp(size); "u,sRbL  
} G+fd.~aGE  
} (}6wAfGo  
oq243\?Y  
private int size=0;  .?70=8{  
g"w)@*?K  
private int[] queue; N]V/83_  
>|5XaaDa  
public int get() { xdCs5ko  
return queue[1]; 5UPPk$8 `  
} _>;&-e  
z?I+u* rF6  
public void remove() { Mo~ki"9.  
SortUtil.swap(queue,1,size--); v^;-@ddr  
fixDown(1); P~o@9RV-  
} (}sDm ~;s  
file://fixdown $e>/?Ss  
private void fixDown(int k) { Cv0&prt  
int j; QZ?O;K1|y  
while ((j = k << 1) <= size) { '+tKvTU;  
if (j < size %26amp;%26amp; queue[j] j++; HqB|SWyK  
if (queue[k]>queue[j]) file://不用交换 VVgsLQd  
break; yW[L,N7d  
SortUtil.swap(queue,j,k); Jm%mm SYK  
k = j; *ZX!EjICk  
} OA!R5sOz"  
} vP-3j  
private void fixUp(int k) { VPdwSW[eM  
while (k > 1) { @pTD{OW?  
int j = k >> 1; 7:#  
if (queue[j]>queue[k]) O{Dm;@J-aM  
break; *O!T!J  
SortUtil.swap(queue,j,k); >pN;J)H  
k = j; (21']x  
} zUNH8=U  
} 10/x'#(  
Q%+ }  
} id3)6}  
^}>zYt  
} q^)=F_QvG  
p1Y+  
SortUtil: l t&$8jh  
OTnu{<.a  
package org.rut.util.algorithm; %3ou^mcj  
7s0)3HR}  
import org.rut.util.algorithm.support.BubbleSort; z7| s%&  
import org.rut.util.algorithm.support.HeapSort; |*Of^IkG0  
import org.rut.util.algorithm.support.ImprovedMergeSort; -m E  
import org.rut.util.algorithm.support.ImprovedQuickSort;  { VS''Lv  
import org.rut.util.algorithm.support.InsertSort; hEVjeC  
import org.rut.util.algorithm.support.MergeSort; pCz@(:0  
import org.rut.util.algorithm.support.QuickSort; t1G1(F#&%  
import org.rut.util.algorithm.support.SelectionSort; "w(N62z/  
import org.rut.util.algorithm.support.ShellSort; 83\ o (  
B>{|'z?%>  
/** 2f`WDL  
* @author treeroot @][ a8:Y9I  
* @since 2006-2-2 "xL;(Fqu  
* @version 1.0 f37ji  
*/ e 4 p*51ra  
public class SortUtil { q-A`/9  
public final static int INSERT = 1; fEx+gQW_  
public final static int BUBBLE = 2; <jpeu^7  
public final static int SELECTION = 3; Rrh<mo(yj#  
public final static int SHELL = 4; m(8jSGV  
public final static int QUICK = 5; oNiToFbQu  
public final static int IMPROVED_QUICK = 6; := ]sq}IN  
public final static int MERGE = 7; [q|?f?Zl  
public final static int IMPROVED_MERGE = 8; hO5K\QnRL  
public final static int HEAP = 9; _!CK   
| De!ti  
public static void sort(int[] data) { {E;2&d  
sort(data, IMPROVED_QUICK); w> Tyk#7lw  
} IXbdS9,>F  
private static String[] name={ IlcNT_ 5a8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Pd)K^;em  
}; M(_^'3u  
BM|-GErE  
private static Sort[] impl=new Sort[]{ %'RI 3gy  
new InsertSort(), fO[Rf_  
new BubbleSort(), Cf.pTYSl  
new SelectionSort(), NvQY7C  
new ShellSort(), HXD*zv@ *6  
new QuickSort(), #citwMW  
new ImprovedQuickSort(), l,imT$u  
new MergeSort(), #]5&mKi  
new ImprovedMergeSort(), y%{*uH}SL  
new HeapSort() qk_p}l-F1  
}; ):/<H  
1mT|o_K{ T  
public static String toString(int algorithm){ cmwzKu%  
return name[algorithm-1]; 34X(J-1\|i  
} f}L>&^I)  
u@GRN`yn  
public static void sort(int[] data, int algorithm) { Kj~>&WU  
impl[algorithm-1].sort(data); XR{5]lKt_  
} v< 65(I>  
TSc~$Q]  
public static interface Sort { }}kS~ w-#  
public void sort(int[] data); a) I=U [  
} `ENlV9  
7V9%)%=h|  
public static void swap(int[] data, int i, int j) { nu\  
int temp = data; w JapGc!   
data = data[j]; O\|C,Ep m  
data[j] = temp; XV74F l  
} s[0prm5.  
} G;PbTsW  
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