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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。 4JFi|oK0H  
插入排序: LslQZ]3MY  
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package org.rut.util.algorithm.support; lYT}Nc4"="  
CjORL'3  
import org.rut.util.algorithm.SortUtil; :2Qm*Y&_$V  
/** `rW{zQYM  
* @author treeroot :+ @-F>Q  
* @since 2006-2-2 r0l ud&_9  
* @version 1.0 Y }'C'PR  
*/ i;*c|ma1>  
public class InsertSort implements SortUtil.Sort{ 9c8zH{T_{  
l@4hBq  
/* (non-Javadoc) |M  `B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j{>E.F2.  
*/ k!t5>kPSQ  
public void sort(int[] data) { nVw]0Yl  
int temp; uDK`;o'F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); inZMq(_@$  
} <|k!wfHL  
} D}vgXzD  
} KM< +9`  
YTQ|Hg6jO  
} 2GXAq~h@  
?cCh?> h  
冒泡排序: IK(G%dDw  
R}Uv i9?  
package org.rut.util.algorithm.support; 6(B0gBCId  
5|x&Z/hL  
import org.rut.util.algorithm.SortUtil; ^v*ajy.>  
6Bmv1n[X^h  
/** }lML..((1  
* @author treeroot 7'7bIaJk  
* @since 2006-2-2 3 l->$R]  
* @version 1.0 kI]i,v#F  
*/ 5&v'aiWK  
public class BubbleSort implements SortUtil.Sort{ tz j]c  
8|{:N>7  
/* (non-Javadoc) X}0NeG^'O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X|L.fB=  
*/ `hM`bcS  
public void sort(int[] data) { FoWE<  
int temp; H.XD8qi3W  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^=bJ _'  
if(data[j] SortUtil.swap(data,j,j-1); huWUd)Po%  
}  /8Bh  
} jIv+=b#oT  
} -WE pBt7*  
} m@.4Wrv  
y&t&'l/m  
} x`{ni6}  
[ hm/B`t*e  
选择排序: hz<kR@k}  
hUSr1jlA  
package org.rut.util.algorithm.support; Sq/M %z5'  
ml.l( 6A  
import org.rut.util.algorithm.SortUtil; iBwl(,)?m2  
s#&jE GBug  
/** kR7IZo" q  
* @author treeroot x% k4Lm  
* @since 2006-2-2 .Di+G-#aEs  
* @version 1.0 RR{]^g51  
*/ '`T.K<  
public class SelectionSort implements SortUtil.Sort { v+znKpE  
^TVy :5Ag  
/* y mY,*Rb  
* (non-Javadoc) hZY+dHa]  
* kWjCSC>jA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Au#(guvm  
*/ 0?BT*  
public void sort(int[] data) { /8q7pwV  
int temp; |iLeOztuE  
for (int i = 0; i < data.length; i++) { DG O_fR5L  
int lowIndex = i; p+snBaAo}  
for (int j = data.length - 1; j > i; j--) { ^>h 9<  
if (data[j] < data[lowIndex]) { =R:3J"ly0  
lowIndex = j; '1~mnmiP  
} Ayc}uuu  
} }/x `w  
SortUtil.swap(data,i,lowIndex); !O@qqg(>  
} ]d_Id]Qa+  
} "@Ra>qb  
!lm^(SSv  
} m0paGG  
.(VxeF(v_k  
Shell排序: ^TVica  
#E5Sc\,  
package org.rut.util.algorithm.support; 8'Xpx+v  
;Y?7|G97*S  
import org.rut.util.algorithm.SortUtil; {(o\G"\<XY  
R)WvU4+U  
/** %N|7<n<S  
* @author treeroot }%| (G[  
* @since 2006-2-2 yb*SD!  
* @version 1.0 $ n`<,;^l  
*/ #lM!s  
public class ShellSort implements SortUtil.Sort{ DvF`KHsy  
 .r[DqC  
/* (non-Javadoc) 4FQU$f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q5;K m1(  
*/ r9%4q4D?>9  
public void sort(int[] data) { VeA;zq  
for(int i=data.length/2;i>2;i/=2){ _p?lRU8  
for(int j=0;j insertSort(data,j,i); tB&D~M6[  
} BEg%u)"([  
} P}~6 yX  
insertSort(data,0,1); qdCa]n!d  
} ]d9;YVAU  
lD6hL8[  
/** oPk2ac  
* @param data 6f?5/hq  
* @param j !a[ voUS  
* @param i QVL92"  
*/ :o*{.  
private void insertSort(int[] data, int start, int inc) { ~YlbS-  
int temp; AVOqW0Z+y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8n?P'iM  
} 6>%)qc$i  
} YMIDV-  
} _;yp^^S  
~uqJ@#o{  
} 8{6KWqG\  
*P$5k1  
快速排序: K~+y<z E  
-/~^S]  
package org.rut.util.algorithm.support; /cJ$` pN  
Fr,>|  
import org.rut.util.algorithm.SortUtil; NJz8ANpro$  
1mJBxg}(  
/** `;(/W h  
* @author treeroot s_.q/D@vu  
* @since 2006-2-2 M98dQ%4I  
* @version 1.0 ! D'U:)  
*/ pb{'t2kk  
public class QuickSort implements SortUtil.Sort{ uCNQ.Nbf C  
!z{bqPlFGG  
/* (non-Javadoc) *;m5^i<,;S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xHJ+!   
*/ wQ2'%T|t  
public void sort(int[] data) { y 8];MTl  
quickSort(data,0,data.length-1); \$VtwVQ,b  
} |C=^:@}ri?  
private void quickSort(int[] data,int i,int j){ X3!btxa% t  
int pivotIndex=(i+j)/2; bRLmJt98P  
file://swap lR{eO~'~V  
SortUtil.swap(data,pivotIndex,j); jzI\Q{[m'  
~~;fWM '  
int k=partition(data,i-1,j,data[j]); X z2IAiAs'  
SortUtil.swap(data,k,j); }dAb} 0XK.  
if((k-i)>1) quickSort(data,i,k-1); 1#(,Bq4  
if((j-k)>1) quickSort(data,k+1,j); 2OAh7'8<  
"%A/bv\u  
} [LL"86D  
/** zO9$fU  
* @param data 9C-F%te7  
* @param i "2'nLQ""q  
* @param j [uc;M6o}?  
* @return W2%(a0p  
*/ 5;>M&qmN  
private int partition(int[] data, int l, int r,int pivot) { A8e b{qv  
do{ [9z<*@$-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  _"%d9B  
SortUtil.swap(data,l,r); ^+mSf`5  
} Nq9Qsia&  
while(l SortUtil.swap(data,l,r); G+m|A*[>  
return l; A}~hc&J  
} xY5Idl->  
yf3%g\k  
} {Ylj]  
^(N+s?  
改进后的快速排序: "0`r]5 5d  
feIAgd},  
package org.rut.util.algorithm.support; wx}\0(]Gl  
BtBy.bR  
import org.rut.util.algorithm.SortUtil; f|Z3VS0x  
>f'n l  
/** ^-~.L: }q  
* @author treeroot .Ky<9h.K  
* @since 2006-2-2 / w_ Sc{  
* @version 1.0 H^K(1  
*/ 'RQZU*8  
public class ImprovedQuickSort implements SortUtil.Sort { viD+~j18  
, *e^,|#  
private static int MAX_STACK_SIZE=4096; 67 7p9{:  
private static int THRESHOLD=10; ,{%/$7)  
/* (non-Javadoc) wjq f u /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q7"KgqpQ3  
*/ ~bigaY  
public void sort(int[] data) { udp&U+L  
int[] stack=new int[MAX_STACK_SIZE]; ]v rpr%K  
3hO` GM  
int top=-1; W E|L{  
int pivot; fS1N(RZ 1  
int pivotIndex,l,r; ~< Gs<c}z  
9s73mu`Twg  
stack[++top]=0; 6M"J3\ x  
stack[++top]=data.length-1; dvyE._/v  
L(`^T`  
while(top>0){ Yah3I@xGy  
int j=stack[top--]; @o9EX }  
int i=stack[top--]; ;l4rg!r(S  
u5V<f;  
pivotIndex=(i+j)/2; E2X KhW  
pivot=data[pivotIndex]; w][ ;  
_? 1<  
SortUtil.swap(data,pivotIndex,j); b1nw,(hLY  
?7^('  
file://partition "SLN8x49(  
l=i-1; w]tv<U={  
r=j; Eqp?cKrji  
do{ Mr2dhSQ !  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LP@Q8{'  
SortUtil.swap(data,l,r); XXuU@G6Z7$  
} v{Zh!mk* L  
while(l SortUtil.swap(data,l,r); >p\IC  
SortUtil.swap(data,l,j); [ueT]%  
75!IzJG  
if((l-i)>THRESHOLD){ &m>`+uVBP  
stack[++top]=i; C.8]~MP  
stack[++top]=l-1; ?.\ CUVK  
} >bz}IcZP  
if((j-l)>THRESHOLD){ IJS9%m#  
stack[++top]=l+1; }`5%2iG  
stack[++top]=j; fAUtqkB  
} (}4tj4d  
\dIIZSN  
} "h$A.S  
file://new InsertSort().sort(data); P8DJv-f`  
insertSort(data); 8@6:UR.)  
} ^5=}Y>EJO  
/** 0J@)?,V-.  
* @param data q$:T<mFK$  
*/ nHD4J;l  
private void insertSort(int[] data) { tq<7BO<6  
int temp; W>wE8? _,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6/nhz6=  
} hP3I_I[qF}  
} 5{,/m"-  
} UgSSZ05Lq  
W qci51y>#  
} MCL?J,1?r  
Y_Ej-u+>{  
归并排序: ^q FFF3<8  
[m3G%PO@Da  
package org.rut.util.algorithm.support; ^:{l~~9iKp  
5y}}?6n+  
import org.rut.util.algorithm.SortUtil; .[= 0(NO  
aODOc J N  
/** |;OM,U2  
* @author treeroot 1@CI7j  
* @since 2006-2-2 ?Q9/C|  
* @version 1.0 ,GVHwTZ0`  
*/ kSB)}q6a  
public class MergeSort implements SortUtil.Sort{ RBt"7'  
/}#z/m@bN  
/* (non-Javadoc) S@N&W&W#~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3|9) A+,#  
*/ [ {lF1+];@  
public void sort(int[] data) { {s=QwZdR  
int[] temp=new int[data.length]; d?b2jZ$r]  
mergeSort(data,temp,0,data.length-1); )l[ +7  
} [FF%HRce,.  
"LP4)hr_`  
private void mergeSort(int[] data,int[] temp,int l,int r){ `hM ]5;0  
int mid=(l+r)/2; z)43+8;  
if(l==r) return ; .s7o$u~l  
mergeSort(data,temp,l,mid); (yc$W9  
mergeSort(data,temp,mid+1,r); =ZzhH};aX  
for(int i=l;i<=r;i++){ r A0[y  
temp=data; <X|"5/h  
} 2x$\vL0  
int i1=l; (tyo4Tz1  
int i2=mid+1; (V{bfDu&h@  
for(int cur=l;cur<=r;cur++){ xx!o]D-}  
if(i1==mid+1) {< jLfL1  
data[cur]=temp[i2++]; %J~8a_vO  
else if(i2>r) A ;Z%-x  
data[cur]=temp[i1++]; q Z`@Ro  
else if(temp[i1] data[cur]=temp[i1++]; kj@#oLd%  
else Qs#v/r  
data[cur]=temp[i2++]; Z0b1E  
} '(^p$=3|@D  
} #mx;t3ja7  
;[g v-H  
} +Nc|cj  
(;~[}"  
改进后的归并排序: s8@fZ4  
Be8Gx  
package org.rut.util.algorithm.support; t8]u#bx"?  
oo- ^BG  
import org.rut.util.algorithm.SortUtil; cO)GiWE  
YDs/BF Z  
/** cS QUK  
* @author treeroot WDE_"Mm  
* @since 2006-2-2 cl:*Q{(Cjk  
* @version 1.0 AGK+~EjL@  
*/  gT O%  
public class ImprovedMergeSort implements SortUtil.Sort { -uy}]s5Qu  
1PLKcU  
private static final int THRESHOLD = 10; >=C)\Yfu)  
Zu&trxnNf[  
/* xhg{!w  
* (non-Javadoc) d@,q6R}!MP  
* JXUO?9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9dqD(S#C;"  
*/ 2=F_<Jh|+  
public void sort(int[] data) { -}4H'%Z(i  
int[] temp=new int[data.length]; Yk?ux Z4)H  
mergeSort(data,temp,0,data.length-1); e!eWwC9u  
} '~3( s?B  
mUcHsCszH  
private void mergeSort(int[] data, int[] temp, int l, int r) { L?Wl#wP\;*  
int i, j, k; -s:JD J*  
int mid = (l + r) / 2; sDJ5'ul  
if (l == r) <pK; D  
return; gJ vc<]W8!  
if ((mid - l) >= THRESHOLD) 2kCJqyWy  
mergeSort(data, temp, l, mid); 6K?+adKlc  
else &/=xtO/Z{  
insertSort(data, l, mid - l + 1); zx#d _SVi  
if ((r - mid) > THRESHOLD) //H+S q66  
mergeSort(data, temp, mid + 1, r); _or$^.='  
else -?LSw  
insertSort(data, mid + 1, r - mid); Z#7HuAF{]  
+1h^9 Y'  
for (i = l; i <= mid; i++) { bTHJbpt*-  
temp = data; GN=F-*2  
} ?em)om  
for (j = 1; j <= r - mid; j++) { <KHB/7  
temp[r - j + 1] = data[j + mid]; O}IS{/^7  
} bsqoR8  
int a = temp[l]; Q6Jb]>g\H  
int b = temp[r]; ~X`vRSrH  
for (i = l, j = r, k = l; k <= r; k++) { f 4!^0%l  
if (a < b) { #'$CC<*vy  
data[k] = temp[i++]; Pvbw>k;  
a = temp; RoJ&dK  
} else { ;#r tV;  
data[k] = temp[j--]; `z+:Z>>  
b = temp[j];  "thfd"-  
} szmjp{g0  
} Br-y`s~cP  
} #cjB <APY  
A4(^I u  
/** %\:.rs^  
* @param data = 2My-%i  
* @param l {oz04KGsH  
* @param i "GZhr[AW  
*/ Ij#%Qu  
private void insertSort(int[] data, int start, int len) { Pw$'TE}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wx<5*8zP  
} LjxTRtB_  
} 1<bSHn9  
} z^Oiwzo  
} Z [68ji]  
J )@x:,o  
堆排序: ~POe0!}  
#H7(dT  
package org.rut.util.algorithm.support; l9P~,Ec4''  
ukG1<j7.  
import org.rut.util.algorithm.SortUtil; 1AoBsEnd  
M}38uxP  
/** ^@{'! N  
* @author treeroot ^0X86  
* @since 2006-2-2 ] +Gi~  
* @version 1.0 j q1qj9KZ  
*/ ;9u6]%hQTX  
public class HeapSort implements SortUtil.Sort{ W]6Y buP:  
Yng9_w9Y  
/* (non-Javadoc) b3Y9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L$7v;R3  
*/ sjShm  
public void sort(int[] data) { %9Ulgs8=  
MaxHeap h=new MaxHeap(); 9J2% 9,^  
h.init(data); C_'Ug  
for(int i=0;i h.remove(); 9W'#4  
System.arraycopy(h.queue,1,data,0,data.length); .lTGFeJqZ4  
} p(f)u]1`  
3y 0`G8P'h  
private static class MaxHeap{ "b -KVZ  
o Q{gh$6*  
void init(int[] data){ 9D8el}uHf  
this.queue=new int[data.length+1]; ;y"E}h  
for(int i=0;i queue[++size]=data; W&+UF'F2  
fixUp(size); ly, d =  
} eZP"M 6  
} kw=+"U   
WdIr 3  
private int size=0; hnE@+(d=qJ  
 $7|0{Dw  
private int[] queue; o`G'E&  
{#Gr=iv~N  
public int get() { `[o^w(l:5@  
return queue[1]; 8a-[Q  
} S~Nx;sB  
C7qbofoV  
public void remove() { of{wZU\J+9  
SortUtil.swap(queue,1,size--); L & PhABZ  
fixDown(1); LuQ=i`eXx  
} /!7m@P|&D  
file://fixdown B;7L:  
private void fixDown(int k) { #C !8a  
int j; #kma)_X  
while ((j = k << 1) <= size) { m"+9[d_u  
if (j < size %26amp;%26amp; queue[j] j++; xx9qi^  
if (queue[k]>queue[j]) file://不用交换 9"MC<  
break; E;-R<X5n  
SortUtil.swap(queue,j,k); ^dqyX(  
k = j; p|AIz3  
} S' TF7u  
} NGS/lKz  
private void fixUp(int k) { %)q5hB  
while (k > 1) { b/O~f8t  
int j = k >> 1; ;Iv)J|*  
if (queue[j]>queue[k]) %&z9^}Vd[  
break; ,ci tzh  
SortUtil.swap(queue,j,k); JrCm >0g  
k = j; Fz>J7(Y.j  
} dc%+f  
} $!KV]]  
T4\,b  
} trgj]|?M  
DSET!F;PG  
} LD^V="d  
% YU(,83(+  
SortUtil: EJZl'CR  
e ~*qi&,4  
package org.rut.util.algorithm; N,Y<mX  
*K m%Vl  
import org.rut.util.algorithm.support.BubbleSort; 6 D~b9 e  
import org.rut.util.algorithm.support.HeapSort; 4[+n;OI  
import org.rut.util.algorithm.support.ImprovedMergeSort; -?'u"*#1,  
import org.rut.util.algorithm.support.ImprovedQuickSort; vco:6Ab$  
import org.rut.util.algorithm.support.InsertSort; )v ['p  
import org.rut.util.algorithm.support.MergeSort; uCUQxFp  
import org.rut.util.algorithm.support.QuickSort; ?~u"w OH'  
import org.rut.util.algorithm.support.SelectionSort; {!6!z,  
import org.rut.util.algorithm.support.ShellSort; s*(Y<Ap7d  
4MIL# 1s  
/** my*UN_]  
* @author treeroot Mx$VAV^\  
* @since 2006-2-2 9\Yj`,i5  
* @version 1.0 :5h&f  
*/ l'-iIbKX  
public class SortUtil { ogjm6;  
public final static int INSERT = 1; dos$d3B4  
public final static int BUBBLE = 2; rD<@$KpP  
public final static int SELECTION = 3; gD&%$&q  
public final static int SHELL = 4; zy5@K)  
public final static int QUICK = 5; \{NeDv{A  
public final static int IMPROVED_QUICK = 6; >JC.qjA  
public final static int MERGE = 7; [/5>)HK} C  
public final static int IMPROVED_MERGE = 8; `iQyKZS/+  
public final static int HEAP = 9;  dsJ}C|N  
$WTu7lVV[1  
public static void sort(int[] data) { #2x\d  
sort(data, IMPROVED_QUICK); ~Bj-n6QDE  
} MLa]s* ; d  
private static String[] name={ BflF*-s ^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  bQ  
}; (:E^} &A  
Jq?ai8  
private static Sort[] impl=new Sort[]{ Ep?a1&b  
new InsertSort(), qj/ 66ak  
new BubbleSort(), Ct"h.rD]  
new SelectionSort(), L>pP3[~DV  
new ShellSort(), ;~/  
new QuickSort(), o+6Y/6Xp@  
new ImprovedQuickSort(), 1VJE+3  
new MergeSort(), V-J\!CHX  
new ImprovedMergeSort(), B.{0,b W?  
new HeapSort() .hT^7|Jz[  
}; }$g5:k!  
?^,GaZ^V  
public static String toString(int algorithm){ <}i\fJX6  
return name[algorithm-1]; ng<|lsZd  
} <lv:mqV  
^@L  
public static void sort(int[] data, int algorithm) { y"2#bq  
impl[algorithm-1].sort(data); 9$#2+G!J  
} }Y<(1w  
5_=&U-? H  
public static interface Sort { -FE5sW  
public void sort(int[] data); KDHR} `  
} Ur5X~a\y  
7J0 PO}N  
public static void swap(int[] data, int i, int j) { s g6  
int temp = data; ,uDB ]  
data = data[j]; l^"gpO${K  
data[j] = temp; !f_Kq$.{  
} Q.vtU%T  
} I /> .P  
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