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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。 (;0]V+-  
插入排序: pw .(6"  
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package org.rut.util.algorithm.support; e %#f9i  
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import org.rut.util.algorithm.SortUtil; H.e@w3+h  
/** &x}JC/u]fd  
* @author treeroot a+d|9y/k  
* @since 2006-2-2 ?Z"}RMM)8  
* @version 1.0 _*_zyWW_j  
*/ v%r!}s  
public class InsertSort implements SortUtil.Sort{ 49yN|h;c!  
ZsE8eD  
/* (non-Javadoc) Wp ]u0w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Ti?(n#M>  
*/ E^s>S,U[y  
public void sort(int[] data) { q~Ud>{  
int temp; 8EQ;+V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 94+#6jd e  
} 9%8T09I!  
} %rYt; 7B  
} >2ct1_  
B}p/ ,4x6  
} a v/=x  
jWQB~XQY  
冒泡排序: CBc}N(9  
aLr^uce]  
package org.rut.util.algorithm.support; FU<rE&X2:  
;YB8X&H$  
import org.rut.util.algorithm.SortUtil; @Q'5/q+  
zx^)Qb/EL6  
/** aw~OvnX E  
* @author treeroot ~V<je b  
* @since 2006-2-2 W[b/.u5z:  
* @version 1.0 u%2u%-w  
*/ 'lWNU   
public class BubbleSort implements SortUtil.Sort{ McfSB(59  
H_ x35|"  
/* (non-Javadoc) dX<UruPA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b{sFN !  
*/ =%bc;ZUu  
public void sort(int[] data) { <ioX|.7ZX  
int temp; 9F3`hJZRy>  
for(int i=0;i for(int j=data.length-1;j>i;j--){  iGR(  
if(data[j] SortUtil.swap(data,j,j-1); ] O 2_&cs  
} -Z:al\e<g  
} a].Bn#AH!C  
} Dq\#:NnKvx  
} c$p1Sovw  
%o~zsIl  
} v5&WW?IBQ  
uH`ds+Hp  
选择排序: ;e-iiC]PI  
f}*Xz.[bCp  
package org.rut.util.algorithm.support; ^  K/B[8  
fY>\VY$>  
import org.rut.util.algorithm.SortUtil; B3K%V|;z )  
5e/%Tue.  
/** u{J:wb  
* @author treeroot VGTo$RH  
* @since 2006-2-2 Y~Zg^x2  
* @version 1.0 Y5K!DMK Y  
*/ 5"{wnnY%K}  
public class SelectionSort implements SortUtil.Sort { JG4Tb{F=  
X~lOFH;}q  
/* c sYICLj  
* (non-Javadoc) aX0sy\Z]j  
* >5 Ce/P'R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jk)U~KGcg  
*/ %R(j|a9z  
public void sort(int[] data) { d`^j\b>5(  
int temp; S7-?&[oeJ  
for (int i = 0; i < data.length; i++) { Lc+)#9*d  
int lowIndex = i; l46O=?usDX  
for (int j = data.length - 1; j > i; j--) { 1298&C@  
if (data[j] < data[lowIndex]) { ; <3w ,r  
lowIndex = j; -^C;WFh8)  
} Ie``W b=  
} vVE^Y  
SortUtil.swap(data,i,lowIndex); Y ||!V  
} J\#6U|a""u  
} ?jy^WF`  
 Zuwd(q  
} )\p@E3Uxf  
r)ga{Nn,.  
Shell排序: GMd81@7  
erqg|TsFj  
package org.rut.util.algorithm.support; =yk#z84<  
AQ@A$  
import org.rut.util.algorithm.SortUtil; 7M5HIK6_  
/ZX8gR5x  
/** @ -g^R4e<  
* @author treeroot v^JyVf>  
* @since 2006-2-2 nbhx2@Teqe  
* @version 1.0 kf^Wzp  
*/ H~&9xtuHN  
public class ShellSort implements SortUtil.Sort{ I5PaY.i  
>(*jL  
/* (non-Javadoc) RQv`D&u_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ptYQP^6S[  
*/ =v1s@5 ;~  
public void sort(int[] data) { Z5_MSPm  
for(int i=data.length/2;i>2;i/=2){ Kq{9 :G  
for(int j=0;j insertSort(data,j,i); BwrMRMq"  
} dEns|r  
} 0p:n'P  
insertSort(data,0,1); ^25$=0  
} #>[+6y]U!  
v-4eN1OS  
/** SbrBlP: G  
* @param data liPUK#  
* @param j ^hTq~"  
* @param i YgrBIul  
*/ '^}l|(  
private void insertSort(int[] data, int start, int inc) { Ch^Al 2)=  
int temp; *m2J$9q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N!^U{;X7/  
} TC" mP!1  
} ?5"~V^L3  
} F6YMcdU  
sm/l'e  
} rn U2EL  
Mv JEX8M  
快速排序: X2T)]`@  
5>"-lB &  
package org.rut.util.algorithm.support; f`P%aX'cBQ  
DYbkw4Z,  
import org.rut.util.algorithm.SortUtil; &\`=}hB  
0|HD(d`a  
/** qzsS"=5  
* @author treeroot pOpie5)7X  
* @since 2006-2-2 v6TH-  
* @version 1.0 $v$~.  
*/ E.4`aJ@>d  
public class QuickSort implements SortUtil.Sort{ Q_qc_IcM y  
?,TON5Fl-  
/* (non-Javadoc)  jats)!:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Jaek_A`  
*/ X{<j%PdC  
public void sort(int[] data) { OV Iu&6#  
quickSort(data,0,data.length-1); p7Gs  
} cPkN)+K  
private void quickSort(int[] data,int i,int j){ dy#dug6j  
int pivotIndex=(i+j)/2; Z_cTuu0'  
file://swap m?>$!B4jFB  
SortUtil.swap(data,pivotIndex,j); ES<"YF  
5}E8Tl  
int k=partition(data,i-1,j,data[j]); kMf]~EZ?  
SortUtil.swap(data,k,j); )nTOIfP2  
if((k-i)>1) quickSort(data,i,k-1); mvlK ~c8  
if((j-k)>1) quickSort(data,k+1,j); n"-cX)  
gfFP-J3cN  
} x^;nQas;  
/** \HV%579  
* @param data dEJ>8e8  
* @param i %dKUB4  
* @param j %v4/.4sR,;  
* @return )9l5gZX'I  
*/ +^{yJp.H#  
private int partition(int[] data, int l, int r,int pivot) { _Z@- q  
do{ 9=K=gfZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (]0ZxWF  
SortUtil.swap(data,l,r); 5<Xq7|Jt  
} &iId<.SiJ  
while(l SortUtil.swap(data,l,r); CXb)k.L   
return l; lpj$\WI=  
} %koHTWT+  
` ` 6?;Y  
} C$b$)uI;  
hd8:|_  
改进后的快速排序: +}J2\!Jw  
0".pw; .}  
package org.rut.util.algorithm.support; F]0O4p~fl  
[x'xbQLGd  
import org.rut.util.algorithm.SortUtil; vB#&XK.aW  
Cn[`]  
/** U8\[8~Xftn  
* @author treeroot ,ZC^,Vq  
* @since 2006-2-2 l{E+j%  
* @version 1.0 5kofO  
*/ #xNLr   
public class ImprovedQuickSort implements SortUtil.Sort { ZS4lb=)G  
{ P&l`  
private static int MAX_STACK_SIZE=4096; LTm2B_+  
private static int THRESHOLD=10; .UU BAyjm  
/* (non-Javadoc) '&xv)tno  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K\`L>B. 1  
*/ mflH&Bx9  
public void sort(int[] data) { !/BXMj,=  
int[] stack=new int[MAX_STACK_SIZE]; ezY _7  
"'~'xaU!=a  
int top=-1; F9^8/Z  
int pivot; N;9@-Tb  
int pivotIndex,l,r; wh<+.Zp  
.u>IjK^  
stack[++top]=0; 1aS[e%9Mg  
stack[++top]=data.length-1; Y\Odj~Mj  
2n2{Oy>L  
while(top>0){ 1t WKH  
int j=stack[top--]; $,bLK|<hi  
int i=stack[top--]; 6OkN(tL&.  
pkWzaf  
pivotIndex=(i+j)/2; I;S[Ft8d  
pivot=data[pivotIndex]; $RuJm\f  
%}MZWf{  
SortUtil.swap(data,pivotIndex,j); a<B[ ~J4i  
.>Gq/[c0|  
file://partition AhZ8B'Ee  
l=i-1; l(-6pP5`  
r=j; k+f!)7_  
do{ :[ F`tDL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S>Z V8  
SortUtil.swap(data,l,r); Ysz{~E'  
} )3V5P%Q  
while(l SortUtil.swap(data,l,r); HcXyU/>D  
SortUtil.swap(data,l,j); lUJ/ nG0l  
]2T=%(*  
if((l-i)>THRESHOLD){ hyH"  
stack[++top]=i; n\Uh5P1W"  
stack[++top]=l-1; ):   
} R+ lwOVX  
if((j-l)>THRESHOLD){ ZqsI\"bj  
stack[++top]=l+1; CLg;  
stack[++top]=j; >?ZH[A  
} h3$.` >l  
3)^-A4~E  
}  {.GC7dx  
file://new InsertSort().sort(data); )@DH&  
insertSort(data); p6$ QTx  
} z _~ 5c  
/** UN>!#Ji:$  
* @param data TL ;2,@H`  
*/ +/*g?Vt  
private void insertSort(int[] data) { 4&~ft  
int temp; 0K <@?cI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?"]fGp6y  
} Jtnuo]{R  
} Uc/MPCqZ  
} 'j6PL;~c  
qsk8#  
} *y9 iuJ}  
9&q<6TZz  
归并排序: O,>1GKw"\  
Q/o !&&  
package org.rut.util.algorithm.support; Z"<aS&GH  
kz\ D-b  
import org.rut.util.algorithm.SortUtil; j(F&*aH78  
Yv\.QrxPm  
/** awQ f$  
* @author treeroot .?UK`O2Q  
* @since 2006-2-2 vE0Ty9OH"]  
* @version 1.0 m=b~Wf39  
*/ h7c8K)ntnf  
public class MergeSort implements SortUtil.Sort{ X3vTyIsn  
uvz}qH@j/Q  
/* (non-Javadoc) V'sp6:3*\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ??5qR8n.  
*/ g^OU+7o  
public void sort(int[] data) { 7^P!@o$v!  
int[] temp=new int[data.length]; Pou-AzEP$  
mergeSort(data,temp,0,data.length-1); F2WUG  
} )T/"QF}<T  
{y0#(8-&  
private void mergeSort(int[] data,int[] temp,int l,int r){ p:U9#(v)  
int mid=(l+r)/2; =PWh,lWS  
if(l==r) return ; Z;M]^?  
mergeSort(data,temp,l,mid); :j)H;@[I  
mergeSort(data,temp,mid+1,r); S^? @vj  
for(int i=l;i<=r;i++){ ?}\aG3_4  
temp=data; |q"WJQ  
} c+c3C8s*8  
int i1=l; <GC<uB |p  
int i2=mid+1; OiH tobM  
for(int cur=l;cur<=r;cur++){ 1H`T=:P?  
if(i1==mid+1) w-*$gk]   
data[cur]=temp[i2++]; ^UHt1[  
else if(i2>r) *9 M 5'  
data[cur]=temp[i1++]; 'L4@|c~x  
else if(temp[i1] data[cur]=temp[i1++]; 9`yG[OA  
else i,=greA]"  
data[cur]=temp[i2++]; xa#0y   
} ^=D=fX"8%  
} ,rVm81-2  
gq~>S1  
} Sr Z\]  
xZZW*d_b  
改进后的归并排序: Oaf!\ z}  
I9O!CQCTt  
package org.rut.util.algorithm.support; +O>!x#)&"  
0l#gS;  
import org.rut.util.algorithm.SortUtil; Bh$ hgf.C  
0i/l2&x*k]  
/** ??0C"8:[  
* @author treeroot vY0C(jK  
* @since 2006-2-2 mJe;BU"y]  
* @version 1.0 /{Ksi+q  
*/ .q$HL t  
public class ImprovedMergeSort implements SortUtil.Sort { *ci,;-*C  
w|!>>W6J  
private static final int THRESHOLD = 10; )_N|r$i\  
(yIl]ZN*  
/* $o"S zy  
* (non-Javadoc) V1 T?T9m  
* (1p[K-J)r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (oO*|\9u  
*/ :c3}J<Z  
public void sort(int[] data) { |3`Sd;^;  
int[] temp=new int[data.length]; ^vmT=f;TM  
mergeSort(data,temp,0,data.length-1); F!OVx<  
} 0PO'9#  
G&$+8 r  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]o`qI#{R~R  
int i, j, k; ~&B{"d  
int mid = (l + r) / 2; CKwrE]h  
if (l == r) &.D3f"  
return; MT9c:7}[&  
if ((mid - l) >= THRESHOLD) Qfx(+=|  
mergeSort(data, temp, l, mid); rZ5vey  
else !N:!x[5  
insertSort(data, l, mid - l + 1); D{g6M>,\  
if ((r - mid) > THRESHOLD) +ptVAg+  
mergeSort(data, temp, mid + 1, r); 3;( ;'5|Z  
else ?n<b:oO  
insertSort(data, mid + 1, r - mid); I:l<t*  
LN}eD\  
for (i = l; i <= mid; i++) { Nr)v!z~y   
temp = data; ][3H6T!ckL  
} pwAawm  
for (j = 1; j <= r - mid; j++) { SQx%CcW9d  
temp[r - j + 1] = data[j + mid]; bE:oF9J?  
} O* `v1>  
int a = temp[l]; SRs1t6&y=  
int b = temp[r]; =c>2d.^l  
for (i = l, j = r, k = l; k <= r; k++) { 6p`AdDV  
if (a < b) { [mX/]31  
data[k] = temp[i++]; }9yAYZ0q{b  
a = temp; #T:#!MKa  
} else { ? RL[#d+y  
data[k] = temp[j--]; ): HjpJvF  
b = temp[j]; 4TcKs}z  
} &1)4B  
} 1Q1NircJ  
} ,>%2`Z)  
A*#.7Np!"  
/** 1sp>UBG  
* @param data j}R!'m(P'  
* @param l e aLSq  
* @param i &5>R>rnB  
*/ *ub]M3O  
private void insertSort(int[] data, int start, int len) { 88(h`RGMh  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h?E[28QB  
} Gq%q x4  
} 3\_ae2GW  
} T(t@[U2^  
} kSx^Uu*  
L1=+x^WQ  
堆排序: %xZYIY Kf  
BUT{}2+K  
package org.rut.util.algorithm.support; 2@K D '^(  
_h|rH   
import org.rut.util.algorithm.SortUtil; *ue- x!"c  
/Y$UJt  
/** eF+:w:\h  
* @author treeroot g-`HKoKe  
* @since 2006-2-2 C "XvspJ  
* @version 1.0 G|eY$5!i  
*/ rMRM*`Q2  
public class HeapSort implements SortUtil.Sort{ .^6;_s>FN  
a+A^njk  
/* (non-Javadoc) +oa\'.~?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,#&\1Vxf  
*/ KwGk8$ U  
public void sort(int[] data) { gB/4ro8  
MaxHeap h=new MaxHeap(); f P'qUN  
h.init(data); 7u[U%yd  
for(int i=0;i h.remove(); :pj 00  
System.arraycopy(h.queue,1,data,0,data.length); I&JVY8'  
} >iD&n4TK  
egQB!%D  
private static class MaxHeap{ h tC~BK3(  
^Ud1 ag!-  
void init(int[] data){ \a\-hm  
this.queue=new int[data.length+1]; U9k;)fK  
for(int i=0;i queue[++size]=data; `K -j  
fixUp(size); AX6z4G  
} HKu? J  
} f Z8%Z   
' >a(|  
private int size=0; { FVLH:{U^  
}diB  
private int[] queue; n0|oV(0FE  
\Tf[% Kt x  
public int get() { ~)>O=nR  
return queue[1]; #oBMA  
} DUBEh@  
=eG?O7z&  
public void remove() { DmDsn  
SortUtil.swap(queue,1,size--); hM}rf6B  
fixDown(1); QTZf e<m0  
} *12,MO>go  
file://fixdown R@*mMWW,  
private void fixDown(int k) { Ky"]L~8$  
int j; * V;L|c  
while ((j = k << 1) <= size) { oU/CXz?H  
if (j < size %26amp;%26amp; queue[j] j++; tQ!p<Q= $)  
if (queue[k]>queue[j]) file://不用交换 q\+khy,k  
break; OZ{YQ}t{^1  
SortUtil.swap(queue,j,k); S$9>9!1>*  
k = j; SN w3xO!;&  
} BET3tiHV  
} <}e2\x  
private void fixUp(int k) { fTQ_miAlP  
while (k > 1) { IQn|0$':Z  
int j = k >> 1; 8 MUY  
if (queue[j]>queue[k]) +um Ua  
break; L~x PIu  
SortUtil.swap(queue,j,k);  pkWJb!  
k = j; l!r2[T]I@7  
} 5:3%RTLG  
} Wh PwD6l>  
_H[LUl9  
} ,3 !D(&  
)6K Q"*  
} p)_v.D3i  
l#40VHa?S  
SortUtil: _i@{:v  
f P|rD[  
package org.rut.util.algorithm; F_28q15~:  
pPI'0x  
import org.rut.util.algorithm.support.BubbleSort; ~W?F.  
import org.rut.util.algorithm.support.HeapSort; o }EipTL  
import org.rut.util.algorithm.support.ImprovedMergeSort; >%qk2h>  
import org.rut.util.algorithm.support.ImprovedQuickSort; -P I$SA,  
import org.rut.util.algorithm.support.InsertSort; Gyo[C98  
import org.rut.util.algorithm.support.MergeSort; 66A}5b4)]  
import org.rut.util.algorithm.support.QuickSort; _<;;CI3w  
import org.rut.util.algorithm.support.SelectionSort; eN*=wOh  
import org.rut.util.algorithm.support.ShellSort; NBLiwL37{  
W lD cKY  
/** sZ~q|}D-  
* @author treeroot Y&vn`#   
* @since 2006-2-2 a4'KiA2r  
* @version 1.0 SVr3OyzI  
*/ vTrjhTa\  
public class SortUtil { k7o49Y(#  
public final static int INSERT = 1; =m<; Jx5  
public final static int BUBBLE = 2; =+I~K'2  
public final static int SELECTION = 3; QU`M5{#  
public final static int SHELL = 4; NO(^P+s  
public final static int QUICK = 5; %BdQ.\4DS  
public final static int IMPROVED_QUICK = 6; XctSw  
public final static int MERGE = 7; . X  (^E  
public final static int IMPROVED_MERGE = 8; x3./  
public final static int HEAP = 9; Cxn<#Kf\-<  
*t_"]v-w  
public static void sort(int[] data) { "EA6RFRD  
sort(data, IMPROVED_QUICK); N?Wx-pK  
} X<pg^Y0  
private static String[] name={ >[,ywRJ#_}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'brt?oZ%  
}; /(/Z~J[  
d! BQ%a  
private static Sort[] impl=new Sort[]{ C!]R0L*  
new InsertSort(), KyQO>g{R  
new BubbleSort(), ;3 N0)  
new SelectionSort(), 5m.{ayE  
new ShellSort(), zWN/>~}U \  
new QuickSort(), ,r$k79TI  
new ImprovedQuickSort(), M%*D}s-QE  
new MergeSort(), "c0I2wq  
new ImprovedMergeSort(), Uavr>-  
new HeapSort() Z*AT &7  
}; GM1z@i\5  
}}R?pU_  
public static String toString(int algorithm){ )@vhqVv?  
return name[algorithm-1]; &sFEe<  
} Xv1 SRP#  
,F&TSzH[@v  
public static void sort(int[] data, int algorithm) { O)0}yF$0  
impl[algorithm-1].sort(data); @D?KS;#  
} c"nowbf  
hxCSE$f4  
public static interface Sort { |2i=oX(r|  
public void sort(int[] data); wiwAdYEQ\  
} dC&OjBQ  
tHhau.!  
public static void swap(int[] data, int i, int j) { s} I8:ufT  
int temp = data; W0zRV9"P  
data = data[j]; ]xx}\k  
data[j] = temp; F&tU^(7<  
} Dd:TFZo  
} h/)kd3$*'  
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