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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。 .$7RF!p  
插入排序: K_~kL0=4  
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package org.rut.util.algorithm.support; r-go921  
6<T:B[a-  
import org.rut.util.algorithm.SortUtil; Il Qk W<  
/** ;S \s&.u  
* @author treeroot W@ &a  
* @since 2006-2-2 0KTO )K  
* @version 1.0 @_?2iN?4Z  
*/ ar#73f  
public class InsertSort implements SortUtil.Sort{ <b .p/uA  
c BZ,"kp-  
/* (non-Javadoc) Xdx8HB@L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ar[|M 2|  
*/ *hru);OJr  
public void sort(int[] data) { g$^-WmX\m  
int temp; c?e-2Dp(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YoW)]n  
} URs]S~tk  
} ox%j_P9@:  
} AH:uG#  
QS!Z*vG  
} yQMwt|C4  
Zp^O1&\SK?  
冒泡排序: )obgEJ7Y`l  
H`'a|Y  
package org.rut.util.algorithm.support; w7.,ch  
T.3{}230<  
import org.rut.util.algorithm.SortUtil; tsL ; wT_  
l _%<U  
/** 1O< 6=oH  
* @author treeroot ]XbMqHGS  
* @since 2006-2-2 B{R[z%Y  
* @version 1.0 |Y05 *!\P*  
*/ sv?Fx;d  
public class BubbleSort implements SortUtil.Sort{ HE-5e): k  
Ak,JPz T  
/* (non-Javadoc) "~0`4lo:Xo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -fk;Qq3O  
*/ rR :ZTfJs"  
public void sort(int[] data) { >h)kbsSU0z  
int temp; !p).3Kx0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ tE_n>~Zs  
if(data[j] SortUtil.swap(data,j,j-1); ; cvMNU$fN  
} NLY=o@<  
} Lc5zu7ncg  
} &Ap9h# dK  
} VC/-5'_6  
Qv5 fK  
} 38D5vT)n  
in/~' u  
选择排序: w~)tEN>  
)xccs'H  
package org.rut.util.algorithm.support; +^+'.xQ  
\ c4jGJ  
import org.rut.util.algorithm.SortUtil; Q5T3  
vhbHt_!u&  
/** ^;<d<V}*  
* @author treeroot QMz=e  
* @since 2006-2-2 c0'ryS_Z9  
* @version 1.0 V~[b`&F  
*/ ]sqLGmUL  
public class SelectionSort implements SortUtil.Sort { 4r7F8*z  
rAfz?  
/* y ;Cs#eo  
* (non-Javadoc) F`m}RL]g  
* babL.Ua8o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :\P@c(c{^C  
*/ & H%/.4la  
public void sort(int[] data) { l;0([_>*j  
int temp; {%G9iOV.  
for (int i = 0; i < data.length; i++) { Or.u*!od&  
int lowIndex = i; 'z5jnI  
for (int j = data.length - 1; j > i; j--) {  e|!'  
if (data[j] < data[lowIndex]) { O&BvWik  
lowIndex = j; fMg9h9U  
} TLVsTM8 P  
} t&?{+?p: 9  
SortUtil.swap(data,i,lowIndex); \/YRhQ  
} q+\<%$:u  
} 2I [zV7 @t  
` = O  
} wQUl!s7M;  
&&9 |;0 <  
Shell排序: rhbz|Uq  
;&O?4?@4  
package org.rut.util.algorithm.support; `!Z?F]):G  
HvG %##  
import org.rut.util.algorithm.SortUtil; u_$4xNmQ  
1#6emMV.`  
/** H?];8wq$G  
* @author treeroot d,Aa8I  
* @since 2006-2-2 L? DlR hu  
* @version 1.0 9=ygkPY  
*/ B223W_0"o  
public class ShellSort implements SortUtil.Sort{ (l^7EpNs  
O'wmhLa"W  
/* (non-Javadoc) JE-*o"&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bk~C$'x4  
*/ bh1$ A  
public void sort(int[] data) { W+#Q>^Q>  
for(int i=data.length/2;i>2;i/=2){ MSQ^ovph  
for(int j=0;j insertSort(data,j,i); ]nUrE6  
} g~y0,0'j1\  
} /S"jO [n9b  
insertSort(data,0,1); ?I6rW JcQ6  
} E+O{^C=  
}w$2,r gA  
/** )~wKRyQff  
* @param data S4_/%~?  
* @param j Pj <U|\-?  
* @param i d j\Z}[  
*/ XYzaSp=bb  
private void insertSort(int[] data, int start, int inc) { Gn8 sB  
int temp; _GG\SWm  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9Vm1q!lE  
} ][S q^5`  
} xKSQz  
} %m |I=P  
ZX:rqc  
} f"FFgQMkv  
ad: qOm  
快速排序: (L*GU7m;  
jXE:aWQht  
package org.rut.util.algorithm.support; !.,wg'\P  
Njg$~30  
import org.rut.util.algorithm.SortUtil; BS##nS-[  
Dm}eX:'{  
/** ^<OYW|q?\r  
* @author treeroot V+"%BrM  
* @since 2006-2-2 X!Z)V)@J8  
* @version 1.0 B[@q.n  
*/ 9O3#d  
public class QuickSort implements SortUtil.Sort{ m>vwpRBOA  
.Z [4:TS  
/* (non-Javadoc) }(t`s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #-;W|ib%z  
*/ [Jt}^  
public void sort(int[] data) { >4X2uNbZS  
quickSort(data,0,data.length-1); | ky40[C  
} ~JXz  
private void quickSort(int[] data,int i,int j){ 2xLtJR4L  
int pivotIndex=(i+j)/2; 1X2j%q I&  
file://swap U9:)qvMXe  
SortUtil.swap(data,pivotIndex,j); (&e!u{I  
ki'$P.v{$w  
int k=partition(data,i-1,j,data[j]); Xk4wU$1F  
SortUtil.swap(data,k,j); l)[|wPf  
if((k-i)>1) quickSort(data,i,k-1); L?[m$l!T}  
if((j-k)>1) quickSort(data,k+1,j); o%?)};o  
w[-)c6JyE  
} ^y/Es2A#t  
/** P?h1nxm`'  
* @param data T/'z,,Y  
* @param i $IE}fgA@5  
* @param j Z0L($  
* @return AabQ)23R2  
*/ =PRQ3/?5  
private int partition(int[] data, int l, int r,int pivot) { n?@zp<  
do{ )*BZo>"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f(|k0$EIu  
SortUtil.swap(data,l,r); [ey# ,&T  
}  `M I;.t  
while(l SortUtil.swap(data,l,r); uB  I/3aQ  
return l; g{]6*`/Z  
} #%;Uh  
.]vb\NBK7  
} 3}H{4]*%_  
;_bRq:!j;  
改进后的快速排序: Uqel UL}  
wb.yGfJ  
package org.rut.util.algorithm.support; _aFe9+y  
{cs>Sy 4  
import org.rut.util.algorithm.SortUtil; M~2Us{ `  
kg^0%-F  
/** h vYRAQR:  
* @author treeroot H d|p@$I  
* @since 2006-2-2 a yoC]rE  
* @version 1.0 ^!\1q<@n  
*/ 0/su`  
public class ImprovedQuickSort implements SortUtil.Sort { {nKw<F2  
:|W=2( >  
private static int MAX_STACK_SIZE=4096; UT\4Xk<  
private static int THRESHOLD=10; /yG7!k]Eg  
/* (non-Javadoc) 12Oa_6<\0;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m%[e_eS  
*/ t.9s49P  
public void sort(int[] data) { (.:*GUg  
int[] stack=new int[MAX_STACK_SIZE]; A]|w1nq  
O-V|=t  
int top=-1; DPT6]pl"y  
int pivot; sjyr9AF  
int pivotIndex,l,r; "&2 F  
9)oi_U.  
stack[++top]=0; <r#FI8P;X  
stack[++top]=data.length-1; &gp&i?%X9b  
i{6&/TBnr  
while(top>0){ "UTW(~D'  
int j=stack[top--]; Xq;|l?,O  
int i=stack[top--]; \|0z:R;X  
?/o 8f7Z  
pivotIndex=(i+j)/2; w,p'$WC*  
pivot=data[pivotIndex]; F LWVI4*  
gQPw+0w  
SortUtil.swap(data,pivotIndex,j); QJ XP -  
<<0sv9qw1  
file://partition I<#X#_YP  
l=i-1; $+Ze"E  
r=j; Lk !)G'42  
do{ -V}oFxk]q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nFQuoU]ux  
SortUtil.swap(data,l,r); JVIFpN"`  
} DquL r+s~  
while(l SortUtil.swap(data,l,r); Y%?S:&GH  
SortUtil.swap(data,l,j); ~M}{rl.n=  
"-=fi 'D  
if((l-i)>THRESHOLD){ }:2##<"\t  
stack[++top]=i; ^m#tWb)f  
stack[++top]=l-1; T [SK>z  
} )h}IZSm  
if((j-l)>THRESHOLD){ *S}@DoXS  
stack[++top]=l+1; $Lp [i <O]  
stack[++top]=j; WutPy_L<  
} u!K1K3T6k  
FoetP`   
} 01'>[h#_n  
file://new InsertSort().sort(data); MDlH[PJ@i  
insertSort(data); ]CzK{-W  
} u#Ig!7iUu  
/** zr|DC] 3  
* @param data PLkS-B  
*/ i47LX;}  
private void insertSort(int[] data) { JdS,s5Z>  
int temp; R;!,(l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !mxH/{+|n  
} (u&x.J  
} Or? )Nlg6x  
} 7 FE36Ub9  
; dzL9P9IU  
} ?0; 2ct  
TaRPMKk  
归并排序: VW\S>=O99  
p}QDX*/sSu  
package org.rut.util.algorithm.support; bA)nWWSg=  
J1G}l5N  
import org.rut.util.algorithm.SortUtil; AIg4u(j  
MKfK9>a  
/** $9X+dvu*  
* @author treeroot 6.)ug7aF  
* @since 2006-2-2 1D 'r;`z  
* @version 1.0 8{ZTHY -  
*/  @/s|<*  
public class MergeSort implements SortUtil.Sort{ 5?^#v  
r]!#v{#.  
/* (non-Javadoc) k ;^$Pd?t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uoe{,4T  
*/ 4:/V|E\D  
public void sort(int[] data) { _{jC?rzb  
int[] temp=new int[data.length]; Z^>4qf,k  
mergeSort(data,temp,0,data.length-1); D3 C7f'  
} fQ5v?(  
rn|]-^ku/  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?>B?*IK!  
int mid=(l+r)/2; t"4* ]S  
if(l==r) return ; p3Ux%/ZqPV  
mergeSort(data,temp,l,mid); \#,2#BmO"E  
mergeSort(data,temp,mid+1,r); vW &G\L  
for(int i=l;i<=r;i++){ .Exvuo`F  
temp=data; \8xSfe  
} BzfR8mD  
int i1=l; BaQyn 6B  
int i2=mid+1; E4% -*n  
for(int cur=l;cur<=r;cur++){ 5f7id7SI  
if(i1==mid+1) ^t})T*hM0  
data[cur]=temp[i2++]; Oo :Dt~Ib  
else if(i2>r) RvAgv[8  
data[cur]=temp[i1++]; or*{P=m+R  
else if(temp[i1] data[cur]=temp[i1++]; gHPJiiCv  
else @mCe{r*`  
data[cur]=temp[i2++]; MSmr7%g3D  
} f- XUto  
} &<;T$Y  
vqN/crJ@  
} DP @1to@  
HF FG4'  
改进后的归并排序: DT`HS/~fH  
;}SGJ7  
package org.rut.util.algorithm.support; Ye3o}G9z  
84WD R?  
import org.rut.util.algorithm.SortUtil; O z6$u  
|N`0G.#  
/** dNgA C){w  
* @author treeroot kU/MvoV  
* @since 2006-2-2 WJD2(el  
* @version 1.0 jQ V[zcM  
*/ p9)YRLOh.  
public class ImprovedMergeSort implements SortUtil.Sort { Q/SO%E`E  
)Dz]Pv]H'  
private static final int THRESHOLD = 10; ym|7i9  
L ?/AKg  
/* HF*0  
* (non-Javadoc) +#eol~j9N  
* @4y?XL(n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aars\   
*/ ',R%Q0Q  
public void sort(int[] data) { |J!mM<*K  
int[] temp=new int[data.length]; "<=4]Z  
mergeSort(data,temp,0,data.length-1); 59zWB,y(P  
} a=}1`Q  
-| FHv+  
private void mergeSort(int[] data, int[] temp, int l, int r) { >UCg3uFj  
int i, j, k; TnN yth wZ  
int mid = (l + r) / 2; nook/7]  
if (l == r) :k_&Zd j,B  
return; C~T ,[U  
if ((mid - l) >= THRESHOLD) a(vt"MQ_  
mergeSort(data, temp, l, mid); IVPN=jg?  
else q'8*bu_  
insertSort(data, l, mid - l + 1); Rj";?.R*e  
if ((r - mid) > THRESHOLD) 71@ eJQ  
mergeSort(data, temp, mid + 1, r); @ ;!IPiU  
else HX2u{2$  
insertSort(data, mid + 1, r - mid); *F%1~  
 ?^Aj\z>  
for (i = l; i <= mid; i++) { "|X'qKS(H{  
temp = data; S9!KI)  
} le \f:  
for (j = 1; j <= r - mid; j++) { trDw|WA  
temp[r - j + 1] = data[j + mid]; !Wr<T!T  
} uZL]mwkj]  
int a = temp[l]; 4m< ]qw  
int b = temp[r];  skl3/!  
for (i = l, j = r, k = l; k <= r; k++) { vSHPN|*  
if (a < b) { d3q%[[@  
data[k] = temp[i++]; xmnBG4,f  
a = temp; <<01@Q <  
} else { znE1t%V  
data[k] = temp[j--]; dXxf{|gk>  
b = temp[j]; 5@5 *}[M  
} _5rKuL  
} c~tl0XU1  
} rhkKK_  
|Lg2;P7\  
/** &lLk[/b  
* @param data ,;t:x|{%  
* @param l _]*YSeh=  
* @param i JxinfWk  
*/ {?:]'c  
private void insertSort(int[] data, int start, int len) { ;\w3IAa|V  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  b+a+OI D  
} k{mBG9[z  
} 3*I\#Z4p1  
} ^gcB+  
} bdWdvd:  
48 wt  
堆排序: W7n^]~V  
YA pC|R,^  
package org.rut.util.algorithm.support; T^;b98*  
N*36rR$^  
import org.rut.util.algorithm.SortUtil; _]5UuIMl  
PR"x&JG@  
/** fof}I:vO  
* @author treeroot Y#c439&  
* @since 2006-2-2 fYPu%MN7  
* @version 1.0 kS_#8 I  
*/ 8$~oiK%fw  
public class HeapSort implements SortUtil.Sort{ @ovaOX  
 7V5c`:"  
/* (non-Javadoc) eHvUgDt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l8?C[, K%  
*/ :jv(-RTI  
public void sort(int[] data) { L'Cd` .yVO  
MaxHeap h=new MaxHeap(); A4,%l\di<  
h.init(data); BlpyE[h T  
for(int i=0;i h.remove(); ZY,$oFdsi  
System.arraycopy(h.queue,1,data,0,data.length); 'l(s)Oa{M:  
} zI[<uvxzW`  
/lR*ab  
private static class MaxHeap{ 8a*&,W  
1av#u:jy~>  
void init(int[] data){ *jhgCm  
this.queue=new int[data.length+1]; 'nPI zK<v  
for(int i=0;i queue[++size]=data; =-Hhm($n  
fixUp(size); .I~:j`K6  
} WA2NjxYz  
} [q%`q`EG  
\2; !}  
private int size=0; FNUs .d"  
O>~@>/#  
private int[] queue; JYWoQ[ZO#>  
%ud-3u52M8  
public int get() { p^ (Z  
return queue[1]; w#)u+^-  
} T(u; <}e@[  
+JYb)rn$^  
public void remove() { tRI<K  
SortUtil.swap(queue,1,size--); "y~*1kBu  
fixDown(1); q`mxN!1[  
} sDBSc:5+e  
file://fixdown ~8&->?{  
private void fixDown(int k) { ! 7V>gWhR  
int j; H_@6!R2  
while ((j = k << 1) <= size) { Eb~vNdPo  
if (j < size %26amp;%26amp; queue[j] j++; Ag2~q  
if (queue[k]>queue[j]) file://不用交换 }&+,y<>   
break; _*UI}JtlS  
SortUtil.swap(queue,j,k); :q3w;B~  
k = j; 3:Nc`tM_  
} mC@v,"  
} Gjeb)Y6N  
private void fixUp(int k) { g"" 1\rc=  
while (k > 1) { MJX4;nbl  
int j = k >> 1; ??aO3Vm{  
if (queue[j]>queue[k]) -3yK>\y=|  
break; 5ph CEKt;  
SortUtil.swap(queue,j,k); rZwSo]gp  
k = j; (z8ZCyq7r[  
} vcj(=\ e8v  
} fsPsP`|  
Q\s+w){f%  
} @_"cMU!  
nGWy4rY2S  
} gdD|'h  
,{G\-(\  
SortUtil: vTFG*\Cq  
F&uiI;+zJ  
package org.rut.util.algorithm; 8y5"X"U  
#y:F3$c  
import org.rut.util.algorithm.support.BubbleSort; |BM#rfQ  
import org.rut.util.algorithm.support.HeapSort; rAtCG1Vr  
import org.rut.util.algorithm.support.ImprovedMergeSort; Lk]|;F-2i  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9h+Hd&=  
import org.rut.util.algorithm.support.InsertSort; ,j>FC j>  
import org.rut.util.algorithm.support.MergeSort; @7"n X  
import org.rut.util.algorithm.support.QuickSort; wz3X;1l`c  
import org.rut.util.algorithm.support.SelectionSort; Jc?zX8>Ae:  
import org.rut.util.algorithm.support.ShellSort; G~C-tAB  
5\zR>Tg".  
/** (M|DNDM'd  
* @author treeroot Q?T+^J   
* @since 2006-2-2 G*EF_N. G0  
* @version 1.0 M/Z$?nd_H  
*/ TU)Pi.Aa  
public class SortUtil { h/A\QW8Sd  
public final static int INSERT = 1; ;]xc}4@=mg  
public final static int BUBBLE = 2; _)<5c!  
public final static int SELECTION = 3; uQbag]&j  
public final static int SHELL = 4; ;;i419  
public final static int QUICK = 5; b=S"o )>  
public final static int IMPROVED_QUICK = 6; uSYI X  
public final static int MERGE = 7; Y*pXbztP  
public final static int IMPROVED_MERGE = 8; V?*fl^f  
public final static int HEAP = 9; v+xrn z  
O7IYg;  
public static void sort(int[] data) { g&$5!ifgi  
sort(data, IMPROVED_QUICK); KsTGae;ds  
} q p}2  
private static String[] name={ HfH+U&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3/usgw1  
}; a0]GQyIG  
wQ+i l6  
private static Sort[] impl=new Sort[]{ 837:;<T  
new InsertSort(), @i'D)6sC  
new BubbleSort(), Q)4[zStR#  
new SelectionSort(), GQ?FUFuIoW  
new ShellSort(), Ff>X='{  
new QuickSort(), 5l@} 1n  
new ImprovedQuickSort(), [u*7( 4e  
new MergeSort(), :j3^p8]  
new ImprovedMergeSort(), a!6r&<s=E  
new HeapSort() SJ22  
}; cM9> V2:P  
<,p$eQ)T%  
public static String toString(int algorithm){ #O~pf[[L  
return name[algorithm-1]; FTEC=j$ln  
} /g*_dH)=  
D1deh=  
public static void sort(int[] data, int algorithm) { 7>@0nHec  
impl[algorithm-1].sort(data); 20 $Tky_  
} ik?IC$*n3i  
^y ', l  
public static interface Sort { Ow1+zltgj-  
public void sort(int[] data); "i&n;8?Y  
} K)l*$h&-  
D`Vb3aNB=L  
public static void swap(int[] data, int i, int j) { #p;<X|Hc}8  
int temp = data; 2=fLb7  
data = data[j]; 7}\AhQ, S  
data[j] = temp; [-#1;!k  
} OY|9V  
} w=-{njMz6&  
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