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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。 &1%q"\VI  
插入排序: 6s,uXn  
u4z&!MT}  
package org.rut.util.algorithm.support; w6`9fX6{h  
umz;F  
import org.rut.util.algorithm.SortUtil; 01!s"wjf  
/** 8x`.26p  
* @author treeroot %h1N3\y9i(  
* @since 2006-2-2 ~HQ9i%exg  
* @version 1.0 /TS=7J#  
*/ =4GSg1Biy  
public class InsertSort implements SortUtil.Sort{ N@B9 @8h  
fEB7j-t  
/* (non-Javadoc) I H$0)g;s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f3`7tA  
*/ dEBcfya  
public void sort(int[] data) { A+@&"  
int temp;  $R<Me  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0G!]=  
} .ROznCe}  
} kw2T>  
} 6c0>gUQx-  
"3FihE]k  
} #plY\0E@  
fs/*V~@  
冒泡排序: ]v+31vdf:O  
U%0Ty|$Y   
package org.rut.util.algorithm.support; %s19KGpA  
s3Cc;#  
import org.rut.util.algorithm.SortUtil; (8_\^jJ  
IK*07h/!  
/** p~LrPWHSTP  
* @author treeroot % `Z! 4L  
* @since 2006-2-2 "RIZV  
* @version 1.0 0'nikLaKy  
*/ hy|b6wF&  
public class BubbleSort implements SortUtil.Sort{ D7_*k%;@  
qZ@s#UiB  
/* (non-Javadoc) HSq}7S&U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6'xsG?{JY  
*/ )8g(:`w  
public void sort(int[] data) { B=|cS;bM$3  
int temp; J90v!p-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >:lnt /N3  
if(data[j] SortUtil.swap(data,j,j-1); +}jJ&Z9 )  
} Sp@-p9#  
} +^;JS3p@\  
} |JCU<_<  
} k{t`|BnPKB  
Z0l+1iMx  
} nB .G  
?7{H|sI  
选择排序: eF2|Wjl``;  
qW b+r  
package org.rut.util.algorithm.support; =*Bl|;>6  
/*0K92NB  
import org.rut.util.algorithm.SortUtil; 7`u$  
hpU2  
/** 2;w*oop,O  
* @author treeroot @IXsy  
* @since 2006-2-2 ->N8#XH2=  
* @version 1.0 zXRlo]  
*/ /hO1QT}xd  
public class SelectionSort implements SortUtil.Sort { orb_"Qw  
O$cHZs$  
/* ~K@'+5Pc  
* (non-Javadoc) 2WG>, 4W2  
* .YuJJJv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Wx]RN:  
*/ ~g.$|^,.O/  
public void sort(int[] data) { kBN+4Dr/$  
int temp; }V\N16f  
for (int i = 0; i < data.length; i++) { Jec'`,Y  
int lowIndex = i; K #.  
for (int j = data.length - 1; j > i; j--) { zP<pEI  
if (data[j] < data[lowIndex]) { <I;2{*QI2  
lowIndex = j; ZRYEqSm  
} n'emN Ra  
} 0V?F'<qy  
SortUtil.swap(data,i,lowIndex); 8g7<KKw  
} -44&#l^}_u  
} j)q\9#sI/(  
&4_qF^9J  
} i&n'N8D@  
CD8}I85 K  
Shell排序: mx=BD'  
vhhC> 7  
package org.rut.util.algorithm.support; h yv2SxP*  
2PG [7u^  
import org.rut.util.algorithm.SortUtil; Sf8{h|71  
`jOX6_z?I  
/** P~ &$l2  
* @author treeroot rXHv`k y  
* @since 2006-2-2 b5^OQH{v  
* @version 1.0 )5 R=Z<  
*/ k?7 X3/O  
public class ShellSort implements SortUtil.Sort{ )rixMl &[  
C"{k7yT  
/* (non-Javadoc) H$6`{lx,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r hfb ftw  
*/ LCQE_}Mh  
public void sort(int[] data) { '}9JCJ  
for(int i=data.length/2;i>2;i/=2){ Lco& Fp  
for(int j=0;j insertSort(data,j,i); {%C7EAq*  
} \J6j38D5  
} SV(]9^nW  
insertSort(data,0,1); & GreN  
} x|vqNZ\F  
Z:_D0jG  
/** BGfzslK  
* @param data L{c q, jk  
* @param j FLY Ca  
* @param i 12+>5BA  
*/ FKmFo^^0  
private void insertSort(int[] data, int start, int inc) {  Sr?#S  
int temp; LlSZr)X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Hik3wPnp  
} m?&1yU9  
} Y &K;l_  
} B2O}1.  
plZ>03(6Q  
} CJ++?hB]X  
28=O03q  
快速排序: =J~ x  
6VhjJJ  
package org.rut.util.algorithm.support; [0D Et   
_(KbiEB{  
import org.rut.util.algorithm.SortUtil; 0c#/hFn  
7t*"%]o  
/** 9WR6!.y#f  
* @author treeroot &%/7E_j7  
* @since 2006-2-2 b2FO$Os  
* @version 1.0 _H/8_[xk  
*/ ?)#5X_V-q  
public class QuickSort implements SortUtil.Sort{ "V}[':fen  
ny54XjtG,  
/* (non-Javadoc) Ct%x&m:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G2FXrkU  
*/ J^g!++|2P  
public void sort(int[] data) { dYgXtl=#j  
quickSort(data,0,data.length-1); T|6a("RL  
} &sd}ulEg`  
private void quickSort(int[] data,int i,int j){ G}G#i`6o  
int pivotIndex=(i+j)/2; j.@\3'  
file://swap ,#kIr  
SortUtil.swap(data,pivotIndex,j); pt}X>ph{  
WH \)) y-  
int k=partition(data,i-1,j,data[j]); VzKW:St  
SortUtil.swap(data,k,j); 10U9ZC  
if((k-i)>1) quickSort(data,i,k-1); Qg<(u?7N  
if((j-k)>1) quickSort(data,k+1,j); .?hP7;hhI  
1&U>,;]*  
} $-*!pRaVU  
/** "%x<ttLl  
* @param data h?azFA~  
* @param i C;vtY[}<  
* @param j xoR;=ph  
* @return bv*,#Qm  
*/ aVd,xl  
private int partition(int[] data, int l, int r,int pivot) { :]1 TGfS  
do{ 2Roc|)-47  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kp,M"Y  
SortUtil.swap(data,l,r); -Zz$~$  
} w4d--[Q  
while(l SortUtil.swap(data,l,r); .>IhN 5  
return l; MHC^8VL  
} wg]j+r@  
!U~WK$BP  
} $ <#KA3o\  
8M`#pN^  
改进后的快速排序: HF.^ysI  
82DmG@"s2  
package org.rut.util.algorithm.support; KkE9KwZ]W  
fw RZ5`v<  
import org.rut.util.algorithm.SortUtil; RSfzRnhmr  
^!by3Elqqk  
/** {7/0< N G  
* @author treeroot Zc`BiLzrIG  
* @since 2006-2-2 GHeVp/u  
* @version 1.0 `WH"%V:"Q  
*/ .8G@%p{,  
public class ImprovedQuickSort implements SortUtil.Sort { ,5*eX  
L~NbdaO  
private static int MAX_STACK_SIZE=4096; 8UVmv=T  
private static int THRESHOLD=10; ;IokThI  
/* (non-Javadoc) sK5r$Dbr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a)'5Nw9*  
*/ ;{" +g)u  
public void sort(int[] data) { _&b4aW9<  
int[] stack=new int[MAX_STACK_SIZE]; X]dwX%:Z!j  
vt9)pMs  
int top=-1; \0f{S40  
int pivot; @>U-t{W  
int pivotIndex,l,r; 9*1,!%]  
Uh):b%bS;J  
stack[++top]=0; oT>(V]*5  
stack[++top]=data.length-1; | ]X  
O|M{-)  
while(top>0){ ]&pds\  
int j=stack[top--]; y`XU~B)J1  
int i=stack[top--]; EG=Sl~~o  
T]=r Co  
pivotIndex=(i+j)/2; 07^iP>?  
pivot=data[pivotIndex]; X'qU*Eo  
 _ "VkGG  
SortUtil.swap(data,pivotIndex,j); +P`*kj-P\  
^kB8F"X  
file://partition csW43&  
l=i-1; Q{5kxw1ZF  
r=j; K%RxwM  
do{ %s(k_|G+4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @-!}BUs?  
SortUtil.swap(data,l,r); aD$v2)RR  
} !74S  
while(l SortUtil.swap(data,l,r); Y/ .Z .FD`  
SortUtil.swap(data,l,j); b KN@j'M  
^8AXxE  
if((l-i)>THRESHOLD){ <,e+ kL{  
stack[++top]=i; gh8F 2V;<  
stack[++top]=l-1; <yNM%P<Oy  
} 0p}D(m2B  
if((j-l)>THRESHOLD){ 2 Cv4=S  
stack[++top]=l+1; YLzx<~E4a  
stack[++top]=j; 2-Ej4I~  
} W1|0Yd ;P  
zIu E9l  
} 7B\Vs-d  
file://new InsertSort().sort(data); zPjHsulK  
insertSort(data); 9E>|=d|(d  
} xY^ %&n  
/** NP/Gn6fr  
* @param data f m)pulz  
*/ 'g m0)r  
private void insertSort(int[] data) { A"G 1^8wvX  
int temp; ^Uf]Q$uCjE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G'ei/Me6{  
} [Q/TlOt5  
} ov_j4 j>6P  
} j;-1J_e5  
?-dX`n  
} Pu*6"}#~  
}n3/vlW9  
归并排序: <4g{ fT0  
G(G{RAk>  
package org.rut.util.algorithm.support; ~5CBEIF(NS  
uYs5f.! `  
import org.rut.util.algorithm.SortUtil; 8L:ji,"  
-v]Sr33L  
/** 6 '!4jh  
* @author treeroot V`XNDNJ:  
* @since 2006-2-2 K,:cJ  
* @version 1.0 ECrex>zr%  
*/ uP~@U"!  
public class MergeSort implements SortUtil.Sort{ Vt".%d/`7  
H?&Mbw d  
/* (non-Javadoc) 3 I@}my1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O06"bi5Y  
*/ , P70J b  
public void sort(int[] data) { jw^<IMAG\8  
int[] temp=new int[data.length]; hp5|@  
mergeSort(data,temp,0,data.length-1); '+?"iVVo  
} ZK@N5/H(  
j/f?"VEr  
private void mergeSort(int[] data,int[] temp,int l,int r){ [d1mL JAR  
int mid=(l+r)/2; &h^9}>rVjV  
if(l==r) return ; 4'a=pnE$  
mergeSort(data,temp,l,mid); p8h9Ng* &`  
mergeSort(data,temp,mid+1,r); WSp  
for(int i=l;i<=r;i++){ =E.t`x=  
temp=data;  ]%wVHC  
} N`L0Vd  
int i1=l; =WyZX 7@R  
int i2=mid+1; LE9(fe) fe  
for(int cur=l;cur<=r;cur++){ ebUBrxZX  
if(i1==mid+1) 1p/3!1  
data[cur]=temp[i2++]; V@ cM|(  
else if(i2>r) #t: S.A@  
data[cur]=temp[i1++]; XBb~\p3y  
else if(temp[i1] data[cur]=temp[i1++]; KLitg6&P  
else 8&?s#5zA  
data[cur]=temp[i2++]; i]6`LqlO  
} ->g*</  
} '%dfz K*Z  
x,|hU@h  
} V C24sU  
'E/^8md>  
改进后的归并排序: h?BFvbAt  
T"E6y"D  
package org.rut.util.algorithm.support; i+S) K  
tG9BfGF  
import org.rut.util.algorithm.SortUtil; <UV1!2nv*  
E[@ u 3i8  
/** $RIecv<e_  
* @author treeroot t\{'F7  
* @since 2006-2-2 `_`QxM  
* @version 1.0 `.FF!P:{C*  
*/ M^r1S  
public class ImprovedMergeSort implements SortUtil.Sort { [<g?WPCcC  
u'|4?"uz  
private static final int THRESHOLD = 10; ||hb~%JK6  
El[)?+;D  
/* T arIPp  
* (non-Javadoc) zQ@I}K t  
* Sa?ksD2IaB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X(]WVCu  
*/ Mc09ES  
public void sort(int[] data) { j53*E )d  
int[] temp=new int[data.length]; 4cabP}gBk  
mergeSort(data,temp,0,data.length-1); wVicyiY]  
} ]b7zJUz  
ur$ _  
private void mergeSort(int[] data, int[] temp, int l, int r) { G-xDN59K  
int i, j, k; 5NS[dQG5  
int mid = (l + r) / 2; +cgSC5nR  
if (l == r) =BSzsH7  
return; "a ueL/dgN  
if ((mid - l) >= THRESHOLD) F)&@P-9+  
mergeSort(data, temp, l, mid); aY'C%^h]  
else ]iN'x?Fo  
insertSort(data, l, mid - l + 1); :PIF07$xl  
if ((r - mid) > THRESHOLD) rz wF~-m +  
mergeSort(data, temp, mid + 1, r); Oiz ,w7LRh  
else hxVKV?Fl  
insertSort(data, mid + 1, r - mid); s%C)t6`9  
B_nVP  
for (i = l; i <= mid; i++) { JJ}0gZ   
temp = data; 8/i!' 0r\  
} M=F xB;v  
for (j = 1; j <= r - mid; j++) { z3&]%Q&  
temp[r - j + 1] = data[j + mid]; ewa wL"  
} -(bXSBs#  
int a = temp[l]; 7'Zky2F  
int b = temp[r]; M)'HCnvs'  
for (i = l, j = r, k = l; k <= r; k++) { )6,de2Pb  
if (a < b) { yj;sSRT  
data[k] = temp[i++]; kzn5M&f>  
a = temp; Vr6@> @SC  
} else { S1p;nK  
data[k] = temp[j--]; *.sVr7=j  
b = temp[j]; v0-cd  
} %W%9j#!aN  
} 10<x.8fSP  
} -fwoTGlX  
 `x l   
/** <49K>S9O  
* @param data s }UjGFP  
* @param l UDL!43K  
* @param i +Z7th7W/,  
*/ pk?w\A}  
private void insertSort(int[] data, int start, int len) { K/tRe/t }  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4}_j`d/8|  
} uw [<5  
} A+::O@_s  
} %_+2@\  
} M9V q -U18  
rR9|6l 3  
堆排序: mef<=5t  
[5zx17'  
package org.rut.util.algorithm.support; T&%ux=Jt  
9xO#tu]  
import org.rut.util.algorithm.SortUtil; $ACvV "b  
iYDEI e  
/** [`{Z}q&  
* @author treeroot ,TXTS*V?  
* @since 2006-2-2 W3IpHV  
* @version 1.0 C ~<'rO}|  
*/ c(:f\Wc3Z  
public class HeapSort implements SortUtil.Sort{ U*( izD  
&u /Nf&A  
/* (non-Javadoc) U]^HjfX\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *AoR==:ya  
*/ O4r0R1VQM  
public void sort(int[] data) { NLUT#!Gr  
MaxHeap h=new MaxHeap(); sm0xLZ  
h.init(data); 5b!vgm#])  
for(int i=0;i h.remove(); ;i Fz?d3;  
System.arraycopy(h.queue,1,data,0,data.length); !lf|7  
} ap&?r`Tu  
i=i(%yQ%  
private static class MaxHeap{ v@Gl|29_  
"} q@Y=  
void init(int[] data){ OK{quM5  
this.queue=new int[data.length+1]; tSVc|j  
for(int i=0;i queue[++size]=data; qQA}Z*( m  
fixUp(size); q*F{/N **  
} dRj|g  
} LV\DBDM  
GB>QK  
private int size=0; rs,2rSsg!  
Qr^|:U!;[z  
private int[] queue; O\E/. B  
tE@;X=  
public int get() { &j4xgh9  
return queue[1]; a= DcZ_M  
} ^cczJOxB  
^aH \7J@Y  
public void remove() { 5jd,{<  
SortUtil.swap(queue,1,size--); 4a'N>eDR  
fixDown(1); r<K(jG[:{f  
} txiP!+3OWB  
file://fixdown 5&v~i\Q  
private void fixDown(int k) { RRRCS]y7$t  
int j; 4*Q#0`um  
while ((j = k << 1) <= size) { ^.1c{0Y^0  
if (j < size %26amp;%26amp; queue[j] j++; 7on.4/;M  
if (queue[k]>queue[j]) file://不用交换 ?Cl%{2omO  
break; |K.mP4CKY  
SortUtil.swap(queue,j,k); Qa.<K{m#?  
k = j; EQf[,  
} (iL|Sq&}b  
} f !s=(H;  
private void fixUp(int k) { Zb1<:[  
while (k > 1) { q:dHC,fO  
int j = k >> 1; t.laO. 3  
if (queue[j]>queue[k]) /9HVY %n  
break; k Mu8"Az  
SortUtil.swap(queue,j,k); *^f<W6xc  
k = j; lTd #bN  
} x 7~r,x(xM  
} !P)O(i=  
QA<Jr5Ys  
} vH#huZA?7  
f>W -  
} ^c&L,!_)H  
A<1hOSCz\  
SortUtil: <)u`~$n2  
,wIONDnLZ  
package org.rut.util.algorithm; sC='_h  
i(iXD  
import org.rut.util.algorithm.support.BubbleSort; +tVaBhd!  
import org.rut.util.algorithm.support.HeapSort; |962G1.  
import org.rut.util.algorithm.support.ImprovedMergeSort; j#+!\ft5  
import org.rut.util.algorithm.support.ImprovedQuickSort; VxVE  
import org.rut.util.algorithm.support.InsertSort; Vl:^>jTki  
import org.rut.util.algorithm.support.MergeSort; 1XD,uoxB  
import org.rut.util.algorithm.support.QuickSort; BZR:OtR^  
import org.rut.util.algorithm.support.SelectionSort; NdzSz]q}  
import org.rut.util.algorithm.support.ShellSort; !4^C #{$  
rNB_W.  
/** K?BOvDW"`  
* @author treeroot P/Q!<I  
* @since 2006-2-2 > U%gctIg  
* @version 1.0 DP3PYJ%+B  
*/ hJZV}a|  
public class SortUtil { 8$0rR55  
public final static int INSERT = 1; \3pc"^W  
public final static int BUBBLE = 2; Mdl{}P0)  
public final static int SELECTION = 3; dvt9u9Vg=  
public final static int SHELL = 4; 4iKgg[)7`=  
public final static int QUICK = 5; ZuS0DPS`L  
public final static int IMPROVED_QUICK = 6; #6+@M  
public final static int MERGE = 7; b/C`J p  
public final static int IMPROVED_MERGE = 8; ><gG8MH0'  
public final static int HEAP = 9; QNpqdwu%h  
S/4^ d &Gr  
public static void sort(int[] data) { QWzB6H]  
sort(data, IMPROVED_QUICK); Sgp;@4`M  
} px}|Mu7z~  
private static String[] name={ >_|O1H./4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uf&myV7  
}; [%77bv85.G  
x "^Xj]-  
private static Sort[] impl=new Sort[]{ P] UJ0b  
new InsertSort(), "4uS3h2r  
new BubbleSort(), C/TF-g-_Y  
new SelectionSort(), e> (<eu~P  
new ShellSort(), !V i@1E  
new QuickSort(), SjwyLc  
new ImprovedQuickSort(), cp#JBH O  
new MergeSort(), A?-oL='  
new ImprovedMergeSort(), yIDD@j=l  
new HeapSort() \}p6v}  
}; ( 5tvfz%  
L5 veX}  
public static String toString(int algorithm){ %*`J k#W:  
return name[algorithm-1]; UrYZ` J  
} QlO0qbG[y  
RPE5K:P  
public static void sort(int[] data, int algorithm) { j( RWO  
impl[algorithm-1].sort(data); j^^Ap  
} DDPxmuNG  
hvDNz"ec{  
public static interface Sort { `kZ@Zmj#  
public void sort(int[] data); 3td)'}  
} ]dI2y=[!C  
w8Sp <6*  
public static void swap(int[] data, int i, int j) { 6P5Ih  
int temp = data; ?34 e-  
data = data[j]; iVy7elT;R  
data[j] = temp; V`bi&1?6\  
} 5A sP5  
} ,!7 H]4Qx  
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