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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。 (i)Ed9~F"  
插入排序: VGL!)1b  
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package org.rut.util.algorithm.support; oc0z1u  
=JDa[_lpN  
import org.rut.util.algorithm.SortUtil; Xhk_h2F[  
/** P$hmDTn72  
* @author treeroot <&87aDYz  
* @since 2006-2-2 wf&1,t3Bgn  
* @version 1.0 K[Ao_v2g  
*/ jHx)q|2\  
public class InsertSort implements SortUtil.Sort{ X)^&5;\`  
5#}wI~U;  
/* (non-Javadoc) RI0 +9YJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \!Fx,#r$7-  
*/ ?]Z EK8c  
public void sort(int[] data) { t=6Wk4  
int temp; ;Y"*Z2U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z:kX9vw.  
} j|c6BdROl  
} FZJyqqA$_  
} L\/YS;Y  
Q!(qL[o  
} n<3*7/-  
EVE<LF?  
冒泡排序: rxM)SC;P  
o<f|jGY0  
package org.rut.util.algorithm.support; qcdENIy0b  
{WYmO1  
import org.rut.util.algorithm.SortUtil; Z`97=:W  
1u\kxlZ  
/** vp#r :+=  
* @author treeroot +/Vi"  
* @since 2006-2-2 =^D{ZZw{  
* @version 1.0 $ix*xm. 4m  
*/ a"|\n_  
public class BubbleSort implements SortUtil.Sort{ O,A}p:Pgs  
[ Cu3D  
/* (non-Javadoc) V9r58hbVT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8QaF(?  
*/ y+D"LeCAad  
public void sort(int[] data) { `h+1u`FJ  
int temp; \y*,N^wu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b9(d@2MtK  
if(data[j] SortUtil.swap(data,j,j-1); &L-y1'i=j  
} =MG  
} oJ`ih&Q8  
} ?Z] }G  
} bK%go  
 !+IxPn  
}  "t8mQ;n  
qJW>Y}  
选择排序: K+H?,I  
tqrvcnQr^  
package org.rut.util.algorithm.support; doXd6q4H  
u *z$I  
import org.rut.util.algorithm.SortUtil; LaJc;Jt$  
"G|Gyc  
/** T~%5^+[h  
* @author treeroot ?4q6>ipx  
* @since 2006-2-2 ~@z5Ld3xz  
* @version 1.0 ]xf{.z  
*/ P-No;/!B#  
public class SelectionSort implements SortUtil.Sort { ekP=/;T#S  
"[H9)aAj7  
/* ~m uVQ  
* (non-Javadoc) [_qBp:_j?s  
* +F 6KGK[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >S{1=N@Ev=  
*/ HqOSQ<-Fo  
public void sort(int[] data) { xVKx#X9yk  
int temp; hS +;HB,  
for (int i = 0; i < data.length; i++) { D2>EG~xWq  
int lowIndex = i; y~1UU3k5  
for (int j = data.length - 1; j > i; j--) { _J   
if (data[j] < data[lowIndex]) { +zs;>'Sf  
lowIndex = j; \I,<G7!0  
} oLX6w  
} pa+^5N  
SortUtil.swap(data,i,lowIndex); `"(7)T{  
} BD=;4SLT  
} |fTQ\q]W  
0,m*W?^31  
} 3=dGz^Zdv:  
=q[3/'2V$?  
Shell排序: H7#RL1qM&  
":"M/v%F  
package org.rut.util.algorithm.support; Ks X@e)8u  
.,m$Cm  
import org.rut.util.algorithm.SortUtil; &r DOqj  
kf-ZE$S4  
/** ,[Cl'B  
* @author treeroot M?$-u  
* @since 2006-2-2 W .Hv2r3  
* @version 1.0 fb`VYD9[^  
*/ f 21w`Uk48  
public class ShellSort implements SortUtil.Sort{ w=#&(xm0  
sd8o&6  
/* (non-Javadoc) z0g]nYN%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "t"dz'  
*/ 30<dEoF  
public void sort(int[] data) { rM bb%d:  
for(int i=data.length/2;i>2;i/=2){ "[GIW+ui  
for(int j=0;j insertSort(data,j,i); 2[M:WZ.1  
} mL6/NSSz  
} G0]q(.sOy  
insertSort(data,0,1); e>z7?"N  
} %$]u6GKabi  
sSD(mO<(  
/** SfL,_X]*  
* @param data g s'bv#4yd  
* @param j k92X)/ll'  
* @param i /~ V"v"7E  
*/ g4Hq<W"  
private void insertSort(int[] data, int start, int inc) { Qr0JJoHT  
int temp; f+I*aBQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $AsM 9D<BE  
} _|tg#i|Om  
} S~6<'N&[  
} I}k!i+Yl  
a-QHm;_S  
} bjQfZT(  
/ m?Z!  
快速排序: y/i"o-}}~|  
" *Ni/p$I  
package org.rut.util.algorithm.support; X^xu$d6   
rSEJ2%iF*  
import org.rut.util.algorithm.SortUtil; zNXk dw  
;[9cj&7C<  
/** '!f5|l9SC  
* @author treeroot ;H\,w /E9  
* @since 2006-2-2 >eUAHmXQ|  
* @version 1.0 0q`'65 lx  
*/ 9L&AbmIr  
public class QuickSort implements SortUtil.Sort{ wk5a &  
<#R7sco'  
/* (non-Javadoc) Q kQd;y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;TW@{re  
*/ #bdJ]v.n  
public void sort(int[] data) { *i$+i  
quickSort(data,0,data.length-1); T+.wJ W:jh  
} r%B5@+{so  
private void quickSort(int[] data,int i,int j){ `b%/.%]$  
int pivotIndex=(i+j)/2; }'X}!_9w>  
file://swap T:}Ed_m}q  
SortUtil.swap(data,pivotIndex,j); <B``/EX^  
+zw<iB)J  
int k=partition(data,i-1,j,data[j]); JTs.NY <z  
SortUtil.swap(data,k,j); igo7F@_,  
if((k-i)>1) quickSort(data,i,k-1); &<>A  
if((j-k)>1) quickSort(data,k+1,j); _@RW7iP>  
A!^,QRkRN  
} 1zp,Suv  
/** z&t6,0q`5  
* @param data )0'O!O  
* @param i x208^=F\\  
* @param j hB^"GYZ  
* @return '$U"RP^(  
*/ @?%"nK  
private int partition(int[] data, int l, int r,int pivot) { 5GRN1Aov<  
do{ h\ ybh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )1i)I?m  
SortUtil.swap(data,l,r); iFDQnt [t  
} X:!%"K%}  
while(l SortUtil.swap(data,l,r); 97&6iTYA  
return l; U  *I52$  
} y1AS^'  
*Js<VR  
} NCsUC  
S_WY91r  
改进后的快速排序: U$J]^-AS  
7u}r^+6_o  
package org.rut.util.algorithm.support; K:{Q~+   
?O3 G  
import org.rut.util.algorithm.SortUtil; Uex b>|  
tN0>5'/  
/** REsThB  
* @author treeroot D0-e,)G}V,  
* @since 2006-2-2 C1nQZtF R  
* @version 1.0 Q{a!D0;4v  
*/ #&/*ll)  
public class ImprovedQuickSort implements SortUtil.Sort { k |Lm;g  
LnL<WI*Pq  
private static int MAX_STACK_SIZE=4096; tJn2:}-s  
private static int THRESHOLD=10; 4 IHl'*D[#  
/* (non-Javadoc) _1hqD EM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ILpB:g  
*/ !XicX9n  
public void sort(int[] data) { uI%[1`2N-  
int[] stack=new int[MAX_STACK_SIZE]; jc?Hip'  
JxWHrsh[  
int top=-1; ywdNwNJ  
int pivot; HWd,1  
int pivotIndex,l,r; FStfGN  
msCAC*;,  
stack[++top]=0; p\HXE4d'  
stack[++top]=data.length-1; Vy?w,E0^:  
k~gQn:.Cx  
while(top>0){ WGO=@jkf  
int j=stack[top--]; eu4x{NmQ  
int i=stack[top--]; 'X?`+2wK   
[ wROIvV  
pivotIndex=(i+j)/2; vS0P] AUo  
pivot=data[pivotIndex]; aR\=p:%jGI  
OW.ckYt%  
SortUtil.swap(data,pivotIndex,j); JDs<1@\  
[Cs2H8=#  
file://partition 3HA{18{4uP  
l=i-1; r`krv-,O$  
r=j; m ;KP  
do{ 99eS@}RC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (I+-wki"e  
SortUtil.swap(data,l,r); e^FS/=  
} ^NCH)zK]v  
while(l SortUtil.swap(data,l,r); bZi>   
SortUtil.swap(data,l,j);  <O*q;&9  
khIh<-s!  
if((l-i)>THRESHOLD){ Q A%GK4F70  
stack[++top]=i; 5p>a]gp  
stack[++top]=l-1; G ;z2}Ei  
} U/ZbE?it>  
if((j-l)>THRESHOLD){ Qh*|mW  
stack[++top]=l+1; ZNUV Bi  
stack[++top]=j; s9Xeh"  
} "L ,FUo^&  
e"b F"L  
} p$ko=fo-*_  
file://new InsertSort().sort(data); LJiMtqg  
insertSort(data); -ZuzJAA  
} e88JT_zrO  
/** ;6]+/e7O  
* @param data /0r2v/0  
*/ >GjaA1,  
private void insertSort(int[] data) { W w8[d  
int temp; <Ei|:m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pc$<Cv|vz  
} c)lK{DC  
} % va/x]K  
} ['c:n?  
L*5&hPU  
} YZoudX'"  
sFGXW  
归并排序: H7{ 6t(0j  
<y!BO  
package org.rut.util.algorithm.support; /yI~(8bO  
}^QY<Cp|  
import org.rut.util.algorithm.SortUtil; }&!rIU  
9]S}m[8k  
/** G U!XD!!&  
* @author treeroot PGybX:L  
* @since 2006-2-2 f2d"b+H#  
* @version 1.0 ]vlQNd?  
*/ / '7WL[<  
public class MergeSort implements SortUtil.Sort{ J%}}( G~  
~gV|_G  
/* (non-Javadoc) ;[6u79;I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `*~:n vU  
*/ v& ? Bqj  
public void sort(int[] data) { 7lh%\  
int[] temp=new int[data.length]; !|`YNsR  
mergeSort(data,temp,0,data.length-1); s{CSU3vYmi  
} a|fyo#L  
3rWqt  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2S/^"IM["  
int mid=(l+r)/2; ly{ ~X  
if(l==r) return ; 5[@4($q8  
mergeSort(data,temp,l,mid); mMa7Eyaf  
mergeSort(data,temp,mid+1,r); *D\nsJ*g  
for(int i=l;i<=r;i++){ 2x`# f0[  
temp=data; xXyzzr1[  
} a @TAUJ,  
int i1=l; W58 \V  
int i2=mid+1; - BocWq\  
for(int cur=l;cur<=r;cur++){ zL> nDnL 4  
if(i1==mid+1) S#ven&  
data[cur]=temp[i2++]; [,fMh $t  
else if(i2>r) PPmZ[N9(;  
data[cur]=temp[i1++]; $y`|zK|G-  
else if(temp[i1] data[cur]=temp[i1++]; sGzd c  
else +]AE}UXZoh  
data[cur]=temp[i2++]; aUJ&  
} 6bU/IVP  
} Pl 5+Oo  
m2 OP=z@)  
} {wd.aUB  
2Yyc`o0R;h  
改进后的归并排序: WLizgVM  
8IVKS>  
package org.rut.util.algorithm.support; T9(~^}_+9  
5#iv[c  
import org.rut.util.algorithm.SortUtil; =JEnK_@?K\  
&yYK%~}t[  
/** AJq'~fC;I  
* @author treeroot (3 _2h4O  
* @since 2006-2-2 esxU44  
* @version 1.0 o fN|%g /  
*/ !5[?n3  
public class ImprovedMergeSort implements SortUtil.Sort { X3q'x}{  
C YnBZ  
private static final int THRESHOLD = 10; jd~r~.y  
VCh%v-/  
/* :JPI#zZun  
* (non-Javadoc) h NP|  
* %(n4`@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8;+t.{  
*/ l%;)0gT  
public void sort(int[] data) {  #p\sw  
int[] temp=new int[data.length]; 2 0hE)!A  
mergeSort(data,temp,0,data.length-1); kigc+R  
} G*Qk9bk9  
0Wk}d(f  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?2Bp^3ytJ  
int i, j, k; Oq|pd7fcgm  
int mid = (l + r) / 2; '"=C^f  
if (l == r) Km-lWreTH  
return; oz@yF)/Sm  
if ((mid - l) >= THRESHOLD) L(}T-.,Slr  
mergeSort(data, temp, l, mid); Nnx"b 5I}n  
else u\>Ed9^  
insertSort(data, l, mid - l + 1); {iHC;a5gb$  
if ((r - mid) > THRESHOLD) -rU *)0PR  
mergeSort(data, temp, mid + 1, r); |L0s  
else 3wa }p^   
insertSort(data, mid + 1, r - mid); u9'4q<>&  
Jw9|I)H  
for (i = l; i <= mid; i++) { 6\'v_A O  
temp = data; (\M&/X~q  
} C9({7[k^%  
for (j = 1; j <= r - mid; j++) { 3"&6rdF\jB  
temp[r - j + 1] = data[j + mid]; `/0X].s#o  
} \'j%q\Bl;  
int a = temp[l]; Z'!jZF~4p  
int b = temp[r]; [bE9Y;  
for (i = l, j = r, k = l; k <= r; k++) { ~9 K4]5K-  
if (a < b) { `P"-9Ue=  
data[k] = temp[i++]; Zj!S('hSY  
a = temp; (;cbgHo%}  
} else { Fb[<YX"  
data[k] = temp[j--]; u'LA%l-  
b = temp[j]; c~z{/L  
} \tU91 VIj  
} ${mHbqN  
} l $MX \  
T3!l{vG \O  
/** ~99Ta]U  
* @param data L}x"U9'C  
* @param l sd.:PE <  
* @param i 9A)(K,  
*/ W<k) '|  
private void insertSort(int[] data, int start, int len) { Q]7r?nEEhW  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z}$.Tm  
}  X1y1  
} 0;r+E*`DA  
} b8Y1.y"#  
} lbTz  
lv,8NmP5  
堆排序: y7$e7~}/  
%e:VeP~  
package org.rut.util.algorithm.support; t9W_ [_a9  
&2#<6=}  
import org.rut.util.algorithm.SortUtil; $Omc Ed  
`{8Sr)  
/** cfa#a!Y4  
* @author treeroot h"M}Iz~|V?  
* @since 2006-2-2 ?Tt/,Hl?D  
* @version 1.0 4|7L26,]5  
*/ {_KuztJGA  
public class HeapSort implements SortUtil.Sort{ (Q\QZu@  
{Km|SG[-q  
/* (non-Javadoc) l,-smK69  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "kVN|Do  
*/ Xq+7l5LP  
public void sort(int[] data) { 'xvV;bi  
MaxHeap h=new MaxHeap(); |&h!#Q{7l  
h.init(data); "EQ}xj  
for(int i=0;i h.remove(); !W{|7Es?.  
System.arraycopy(h.queue,1,data,0,data.length); cSoZq4  
} \d]&}`'4{f  
fh:=ja?bM3  
private static class MaxHeap{ ^ 4c2}>f  
u A*Op45  
void init(int[] data){ o!wz:|\S  
this.queue=new int[data.length+1]; SL>>]A,E<`  
for(int i=0;i queue[++size]=data; !f yE Hk  
fixUp(size); 82efqzT  
} l?Bv9k.^?  
} hDjsGB|Fz  
.ikFqZ$$  
private int size=0; ^k t#[N  
K;gm^  
private int[] queue; >2Z:=HT  
VDCrFZ!]  
public int get() { eNi.d;8F  
return queue[1]; s[8<@I*u  
} ,t(y~Z wJ  
x{5 I  
public void remove() { ,r:. 3.  
SortUtil.swap(queue,1,size--); RR*z3i`PP  
fixDown(1); ,`S"nq  
} `61VP-r  
file://fixdown !>  
private void fixDown(int k) { / QSK$ZDC  
int j; J:5%ff~r\  
while ((j = k << 1) <= size) { VL7zU->  
if (j < size %26amp;%26amp; queue[j] j++; kG@1jMPtQ  
if (queue[k]>queue[j]) file://不用交换 f*bs{H'5  
break; )TVyRYZ1  
SortUtil.swap(queue,j,k); Bn-%).-ED  
k = j; #0hX)7(j  
} D@7\Fg  
} i,$*+2Z  
private void fixUp(int k) { po\QMe  
while (k > 1) { GriL< =?t  
int j = k >> 1; P_lk4 0X  
if (queue[j]>queue[k]) fW <qp  
break; wNcf7/ky  
SortUtil.swap(queue,j,k); q J@XVN4   
k = j; %(,JBa:G  
} Go+f0aig  
} 57%:0loW  
UXR$7<D+  
} C(xdiQJh  
DLJu%5F  
} /c]I|$v  
G'#a&6  
SortUtil: A ElNf:  
[gqV}Y"Md  
package org.rut.util.algorithm; KR?-<  
@]gP"Pp  
import org.rut.util.algorithm.support.BubbleSort; dHg[0Br)r  
import org.rut.util.algorithm.support.HeapSort; *^}(LoPZ  
import org.rut.util.algorithm.support.ImprovedMergeSort; `:R8~>p  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]@C&Q,~q  
import org.rut.util.algorithm.support.InsertSort; !1-:1Whz8  
import org.rut.util.algorithm.support.MergeSort; )Uo)3FAn  
import org.rut.util.algorithm.support.QuickSort; }gGcYRT  
import org.rut.util.algorithm.support.SelectionSort; GbBcC#0  
import org.rut.util.algorithm.support.ShellSort; _~-VH&g0R  
|r%6;8A]i  
/** =Pd3SC})6V  
* @author treeroot .ie\3q)  
* @since 2006-2-2 "  q0lh  
* @version 1.0 4$@5PS#,  
*/ ?R#-gvX%  
public class SortUtil { (wo.OH  
public final static int INSERT = 1; C Rw.UC\  
public final static int BUBBLE = 2; l)4KX{Rz{A  
public final static int SELECTION = 3; PL%U  
public final static int SHELL = 4; /!P,o}l7  
public final static int QUICK = 5; tF O27z@  
public final static int IMPROVED_QUICK = 6; ?qO_t;:0>  
public final static int MERGE = 7; G  ZDyw9  
public final static int IMPROVED_MERGE = 8; Nw/4z$].J  
public final static int HEAP = 9; hDSt6O4za  
UQ}[2x(Kb  
public static void sort(int[] data) { J)"2^?!&B  
sort(data, IMPROVED_QUICK); 9NBFG~)|l[  
} qm{(.b^  
private static String[] name={ to|O]h2*U2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [?Cv^t${+  
}; v1oq[+  
!NuiVC]  
private static Sort[] impl=new Sort[]{ nxS|]  
new InsertSort(), X6)-1.T&  
new BubbleSort(), P\pHos  
new SelectionSort(), $^?Mip  
new ShellSort(), HQCxO?  
new QuickSort(), qRZv[T%*Q  
new ImprovedQuickSort(), bC{}&a  
new MergeSort(), FAX|.!US*p  
new ImprovedMergeSort(), A,Wwt [Qw  
new HeapSort() 3X=9$xw_  
}; Ub2t7MU  
o^&u?F9  
public static String toString(int algorithm){ iyKAw   
return name[algorithm-1]; 'y[74?1  
} ^ a^bsKW  
 sC1Mwx  
public static void sort(int[] data, int algorithm) { Q,9"/@:c,  
impl[algorithm-1].sort(data); LmWZ43Z"@  
} Yd'Fhvo8  
=PYfk6j9  
public static interface Sort { ZP~Mgz{f  
public void sort(int[] data); X'Q?Mh  
} iO 9.SF0:  
U*(/eEtd-  
public static void swap(int[] data, int i, int j) { &W+lwEu  
int temp = data; 1yC_/Va1  
data = data[j]; )O\w'|$G  
data[j] = temp; @6h ,#8#  
} =1sGT;>  
} ~tx|C3A`d  
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