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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。 x'6i9]+r  
插入排序: C}L2'l,  
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package org.rut.util.algorithm.support; WYcZD_  
(hKjr1s  
import org.rut.util.algorithm.SortUtil; jzWgyI1b  
/** #~qza ETv,  
* @author treeroot fwUF5Y  
* @since 2006-2-2 $DnR[V}rR!  
* @version 1.0 &wu1Zz[qcz  
*/ Y$./!lVY  
public class InsertSort implements SortUtil.Sort{ ^\\9B-MvY  
=`C K`x  
/* (non-Javadoc) #i.BOQxS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gt~u/Z%  
*/ pQ4HX)<P  
public void sort(int[] data) { ~[BGKq h  
int temp; PB BJ.!Pb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CU*;>h1~u  
} } ,Dk6w$  
} 9Gx`[{wI9<  
} ['iEw!  
x[+bLlb  
} Ruwp"T}mF  
zh(=kS `  
冒泡排序: "kIlxf3  
a`eb9o#  
package org.rut.util.algorithm.support; A\E ))b9+  
;Cty"H,  
import org.rut.util.algorithm.SortUtil; {CTJX2&  
^bdXzjf  
/** N{M25ucAHl  
* @author treeroot dAOJ: @y  
* @since 2006-2-2 Kf,AnKkn'  
* @version 1.0 hm<:\(q  
*/ A4KkX  
public class BubbleSort implements SortUtil.Sort{ OekE]`~w  
'bg'^PN>z  
/* (non-Javadoc) C?<-`$0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y T&#k1  
*/ z  61Fq  
public void sort(int[] data) { e9QjRx  
int temp; {QOy' 8 /  
for(int i=0;i for(int j=data.length-1;j>i;j--){ A#i[Us|  
if(data[j] SortUtil.swap(data,j,j-1); #2Iw%H2q&  
} aQ&K a  
} P9q=tC3^  
} hC]:+.Q+  
} ?k^m|Z  
:}gEt?TUhs  
} ZcTjOy?  
Ahr  
选择排序: |fgh ryI,  
#hXvGon$?  
package org.rut.util.algorithm.support; W}%[i+  
)vuIO(8F#  
import org.rut.util.algorithm.SortUtil; 5EECr \*  
P{StF`>Y  
/** @zLyG#kHY  
* @author treeroot N!-P2)@  
* @since 2006-2-2 :6o|6MC!  
* @version 1.0 7$IR^  
*/ zzd PR}VG  
public class SelectionSort implements SortUtil.Sort { gp'k(rGH  
)6o%6$c  
/* wuSotbc/  
* (non-Javadoc) 6/" #pe^  
* `/B+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z+zEH9.'  
*/ }-9 c1&m  
public void sort(int[] data) { y*=Ipdj  
int temp; VG50n<m9  
for (int i = 0; i < data.length; i++) { Q=#FvsF#z3  
int lowIndex = i; 2j ]uB0  
for (int j = data.length - 1; j > i; j--) { $Ny:At  
if (data[j] < data[lowIndex]) { WfTl\Dxw  
lowIndex = j; dqFp"Xe"%  
} .CW,Td3f!  
} _E/  
SortUtil.swap(data,i,lowIndex); "2 :zWh7|  
} yOk{l$+  
} Jq8v69fyQ  
8{6`?qst@  
} f*p=j(sF  
<B @z>V  
Shell排序: HJlxpX$_  
$gL^\(_3H  
package org.rut.util.algorithm.support; w`dSc@ :  
7>AM zNj  
import org.rut.util.algorithm.SortUtil; D^f;X.Qm  
,,7hVw  
/** j}fSz)`i  
* @author treeroot rQ&XHG>Q*  
* @since 2006-2-2 W?[ C au-  
* @version 1.0 ?t/\ ID  
*/ ln6=XDu  
public class ShellSort implements SortUtil.Sort{ OE_V6 Er  
Zv8_<>e  
/* (non-Javadoc)  ?H_>?,^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \pP1k.~UnC  
*/ 5Ux=5a  
public void sort(int[] data) { <@0S]jy  
for(int i=data.length/2;i>2;i/=2){ \+x#aN\  
for(int j=0;j insertSort(data,j,i); 6X!jNh$oF  
} 152LdZevF  
} 2|NQ5OA0  
insertSort(data,0,1); Oa M~rze  
} O]61guxro  
- "{hP  
/** OgHqF,0MN  
* @param data ]M~ 7L[  
* @param j u0qTP]  
* @param i  OAgZeK$  
*/ <KI>:@|Sc  
private void insertSort(int[] data, int start, int inc) { :EH>&vm  
int temp; us.IdG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :X}Ie P  
} bwJluJ, E  
} E[BM0.#bZ  
} Xc~BHEp  
n_wF_K\h  
} 7c6- o"A  
)lJi7 ^,  
快速排序: ]c]^(C  
3/]~#y%2  
package org.rut.util.algorithm.support; t5P8?q\  
f6PYB&<1  
import org.rut.util.algorithm.SortUtil; J.O{+{&cd  
KJs`[,;<  
/** Kb'4W-&u!  
* @author treeroot +HgyM0LFg  
* @since 2006-2-2 ^SM5oK  
* @version 1.0 {Eqx'j  
*/ j'lC]}kH  
public class QuickSort implements SortUtil.Sort{ BQs\!~Ux2  
!"'6$"U\K  
/* (non-Javadoc) z<J2e^j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [lu+"V,<LJ  
*/ X}ihYM3y/  
public void sort(int[] data) { U_Q;WPJ  
quickSort(data,0,data.length-1); b~<:k\EE  
} lAo4)  
private void quickSort(int[] data,int i,int j){ TKVS%//  
int pivotIndex=(i+j)/2; xZ SDA8kS  
file://swap 0w vAtK|Q  
SortUtil.swap(data,pivotIndex,j); 7`^=Ie%(K  
KUU ZN  
int k=partition(data,i-1,j,data[j]); ][XCpJ)8  
SortUtil.swap(data,k,j); 5@pLGMHT  
if((k-i)>1) quickSort(data,i,k-1); (CAkzgTfc  
if((j-k)>1) quickSort(data,k+1,j); &[N_{O|  
`B$Pk0>5r  
} C 7YS>?^]  
/** |qU~({=b  
* @param data 43~v1pf{!  
* @param i H.o3d/8:  
* @param j <UTO\w%  
* @return Zcg-i:@  
*/ ,C:^K`k&  
private int partition(int[] data, int l, int r,int pivot) { *r7%'K{ C  
do{ 6]4=8! J  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8m#y>`  
SortUtil.swap(data,l,r); $I<\Yuy-M9  
} D u_ ;!E  
while(l SortUtil.swap(data,l,r); yQ&C]{>TS  
return l; Ht@5@(W]I  
} *qxv"PptX  
W*,$0 t  
} 0_=^#r4Mu  
fw a*|y;  
改进后的快速排序: ZS`9r16@b  
;q#Pl!*5  
package org.rut.util.algorithm.support; GgE 38~A4  
-MORd{GF  
import org.rut.util.algorithm.SortUtil; =)x+f/c]  
1)f <  
/** >gl.ILo  
* @author treeroot o>&-B.zq  
* @since 2006-2-2 +6n\5+5  
* @version 1.0 iP1yy5T  
*/ BL-7r=Z  
public class ImprovedQuickSort implements SortUtil.Sort { 6_:KFqc W  
w{4#Q[  
private static int MAX_STACK_SIZE=4096; iRM ?_|  
private static int THRESHOLD=10; &v feBth  
/* (non-Javadoc) ?=HoU3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v+( P4f S  
*/ p4 $4;)  
public void sort(int[] data) { `7.$ A U  
int[] stack=new int[MAX_STACK_SIZE]; ij.NSyk9  
Z2-"NB  
int top=-1; aY DM)b}  
int pivot; #eF k  
int pivotIndex,l,r; #T8PgmR  
`3z6y& dmx  
stack[++top]=0; ]?NiY:v  
stack[++top]=data.length-1; tg9{(_ t/W  
Zq:c2/\c}  
while(top>0){ lg{M\ +  
int j=stack[top--]; gf^y3F[\  
int i=stack[top--]; Pj5:=d8z(  
q 2;CvoF  
pivotIndex=(i+j)/2; .k%/JF91n  
pivot=data[pivotIndex]; 6LqF*$+$`  
Hr \vu`p$  
SortUtil.swap(data,pivotIndex,j); :!FGvR6  
@ *5+ZAF  
file://partition v"<M ~9T)  
l=i-1; H8m[:K]_H  
r=j; R{6M(!x  
do{ q#"lnc<S  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $^YHyfh  
SortUtil.swap(data,l,r); w BoP&l  
} ~b%dBn]n>  
while(l SortUtil.swap(data,l,r); Oe;1f#` 5  
SortUtil.swap(data,l,j); Fz5eCe\B  
Ci2*5n<  
if((l-i)>THRESHOLD){ lbh7`xCR  
stack[++top]=i; /XdLdA!v  
stack[++top]=l-1; (%9J( 4  
} ucJ8l(?Qc  
if((j-l)>THRESHOLD){ }n +MVJ;dG  
stack[++top]=l+1; (@bq@0g  
stack[++top]=j; QoMa+QTuc  
} 9Fg:   
.Y }k@T40a  
} +6L.a3&(b  
file://new InsertSort().sort(data); /2 qxJvZ  
insertSort(data); pi/&WMZ<  
} A[^k4 >  
/** gm1RQ^n,@.  
* @param data DW)X3A(^  
*/ MFipXE!  
private void insertSort(int[] data) { H)Z$j&S{  
int temp; f{|n/j;n=C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'vKae  
} J8[aVG  
} w,X J8+B  
} .g.g lQ_~=  
3.rl^Cq1  
} XRP+0=0  
(aB:P03  
归并排序: l(}l([rdQ  
OJ.oHf=K!  
package org.rut.util.algorithm.support; _P%PjFQ)  
 \7e4t  
import org.rut.util.algorithm.SortUtil; KYq<n& s  
0;%\L:,O  
/** ; NO#/  
* @author treeroot H)rJ >L  
* @since 2006-2-2 :]LW,Eql  
* @version 1.0 HaF&ooI5+  
*/ !lp7}[k<y  
public class MergeSort implements SortUtil.Sort{ q35=_'\W  
g<:TsP'|  
/* (non-Javadoc) N1U.1~U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Hu+8,xA  
*/ %Siw>  
public void sort(int[] data) { MYVb !  
int[] temp=new int[data.length]; OK z5;#S=  
mergeSort(data,temp,0,data.length-1); WY26Iq@C  
} SzG?m]  
46H@z=5  
private void mergeSort(int[] data,int[] temp,int l,int r){ x$pz(Q&v  
int mid=(l+r)/2; ^C}f|{J  
if(l==r) return ; ~$1g"jIw  
mergeSort(data,temp,l,mid); 8mO_dQ  
mergeSort(data,temp,mid+1,r); c#@L~<  
for(int i=l;i<=r;i++){ \t? ;p-+ta  
temp=data; !HXyvyDN  
} -1ci.4F&  
int i1=l; IcNZUZGE  
int i2=mid+1; _&]Gw, ~/i  
for(int cur=l;cur<=r;cur++){ ;h#Q!M&e#  
if(i1==mid+1) vJ;0%;eu[!  
data[cur]=temp[i2++]; }hXmK.['  
else if(i2>r) G+m[W  
data[cur]=temp[i1++]; V Y@`)  
else if(temp[i1] data[cur]=temp[i1++]; m=w #l>!  
else 'a~F'FN$  
data[cur]=temp[i2++]; JYLAu4s6  
} C]3^:b+   
} 6~6 vwp  
X#X/P  
} J~N!. i  
}x_:v!G  
改进后的归并排序: {H 3wL  
]=Wq&~  
package org.rut.util.algorithm.support; S5cs(}Bq  
 7uzc1}r  
import org.rut.util.algorithm.SortUtil; K'[kl'  
)W1[{?  
/** wid  
* @author treeroot eXkpU7w;  
* @since 2006-2-2 &-Q_%eM^  
* @version 1.0 &7eN EA  
*/ 6?/f $,v  
public class ImprovedMergeSort implements SortUtil.Sort { =$_kkVQ$  
p;mV?B?oAQ  
private static final int THRESHOLD = 10; BNixp[Hc  
D$`$4mX@hP  
/* _znpzr9H  
* (non-Javadoc) e_FoNT  
* 41+@!`z7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yv[<c!\   
*/ w4RtIDW:  
public void sort(int[] data) { = jTC+0u  
int[] temp=new int[data.length]; i1Y<[s  
mergeSort(data,temp,0,data.length-1); }RQHsS  
} )0=H)k0  
~^o YPd52*  
private void mergeSort(int[] data, int[] temp, int l, int r) { k?_uv  
int i, j, k; k:&B b"  
int mid = (l + r) / 2; ]'z 5%'  
if (l == r) `a@YbuLd  
return; ];QX&";Z  
if ((mid - l) >= THRESHOLD) +t(Gt0+  
mergeSort(data, temp, l, mid); !{A#\~,  
else Jn20^YG  
insertSort(data, l, mid - l + 1); 3+! G9T!  
if ((r - mid) > THRESHOLD) rt\.|Hr4s  
mergeSort(data, temp, mid + 1, r); +0:]KG!Zs.  
else c >xHaA:V  
insertSort(data, mid + 1, r - mid); BD mF+  
P[H 4Yp  
for (i = l; i <= mid; i++) { NHhKEx0Gtu  
temp = data; Z{_YH7_  
} Z|d+1i  
for (j = 1; j <= r - mid; j++) { =3GgfU5k  
temp[r - j + 1] = data[j + mid]; yz%o?%@  
} MO|8A18B  
int a = temp[l]; )ZfbM|  
int b = temp[r]; l^__oam  
for (i = l, j = r, k = l; k <= r; k++) { QL-E4]   
if (a < b) { [`1@`5SL-  
data[k] = temp[i++]; M[0NB2`Wp  
a = temp; 9 ]|C$;kw@  
} else { y!~ }7=  
data[k] = temp[j--]; (^~~&/U_U$  
b = temp[j]; +y 48.5  
} mS+sh'VH  
} ZD<e$PxxCd  
} F2Mxcs* M  
H)X&5E  
/**  y`pgJO  
* @param data {7EpljH@  
* @param l w%%*3[--X  
* @param i J #;|P-pt  
*/ H9[0-Ur5  
private void insertSort(int[] data, int start, int len) { w|-m*v .  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4@Bl 1b[<  
} Q|7m9~  
} )p{,5"0u  
} p }3$7CR/  
} R^yh,  
43!E>mq  
堆排序: UDlM?r:f  
TjjR% 3  
package org.rut.util.algorithm.support; i`!>zl+D  
$IJ"fs  
import org.rut.util.algorithm.SortUtil;  bDq<]h_7  
xr31< 4B  
/** WFvVu3  
* @author treeroot R'^J#"[  
* @since 2006-2-2 eo&G@zwN   
* @version 1.0  $kxu-  
*/ j$P`/-N  
public class HeapSort implements SortUtil.Sort{ $@~s O0q  
L$@qEsO  
/* (non-Javadoc) $Q=S`z=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^g"%:4zO  
*/ ZSLvr-,D  
public void sort(int[] data) { *EFuK8 ;  
MaxHeap h=new MaxHeap(); $ou/ Fn  
h.init(data); 6U1_Wk?   
for(int i=0;i h.remove(); !_-Uwg  
System.arraycopy(h.queue,1,data,0,data.length);  H@sM$8  
} Mwa Rwk;  
FW3uq^  
private static class MaxHeap{ 3.h0  
m~gcc  
void init(int[] data){ X#ud_+6x  
this.queue=new int[data.length+1]; B_"PFWwg  
for(int i=0;i queue[++size]=data; %kuUQ%W1  
fixUp(size); Pje 1,B q  
} _lfS"ae  
} lr)9U 7  
4 i`FSO  
private int size=0; }wC=p>zA  
Tz7|OV_W$  
private int[] queue; i4)]lWnd  
O ]t)`+%q  
public int get() { <=%G%V_s  
return queue[1]; LKg9{0Y:  
} tYx>?~   
!z]{zM%  
public void remove() { %]o/p_<  
SortUtil.swap(queue,1,size--); &jh17y  
fixDown(1); Nh^q&[?  
} {z@a{L:SC  
file://fixdown `~ h8D9G  
private void fixDown(int k) { 8(* ze+8  
int j; Ba76~-gK$  
while ((j = k << 1) <= size) { 8o466m6/  
if (j < size %26amp;%26amp; queue[j] j++; =h/61Bl3  
if (queue[k]>queue[j]) file://不用交换 rE?B9BF3O  
break; r>t|.=!  
SortUtil.swap(queue,j,k); 07>D G#  
k = j; -~ Dn^B1^  
} I:YE6${k!  
} !4$-.L)#  
private void fixUp(int k) { dlMjy$/T  
while (k > 1) { w^[:wzF0  
int j = k >> 1; '_" S/X +v  
if (queue[j]>queue[k]) .G>~xm0  
break; t6~~s iQI'  
SortUtil.swap(queue,j,k); b\H,+|i K  
k = j; 9jllW[`2F  
} \\Nt^j3qR  
} 0RN7hpf&`  
J5}?<Dd:  
} Z*.rv t  
Q>TNzh  
} jV#1d8qm  
WPPD vB  
SortUtil: /`7G7pQ+  
fdgjTX  
package org.rut.util.algorithm; BipD8`a  
eH%i8a  
import org.rut.util.algorithm.support.BubbleSort; y_T%xWK5  
import org.rut.util.algorithm.support.HeapSort; h@Ix9!?+  
import org.rut.util.algorithm.support.ImprovedMergeSort; jgBJs^JgYG  
import org.rut.util.algorithm.support.ImprovedQuickSort; n%6=w9.%c  
import org.rut.util.algorithm.support.InsertSort; a4",BDx  
import org.rut.util.algorithm.support.MergeSort; G'Uq595'-  
import org.rut.util.algorithm.support.QuickSort; wYh]3  
import org.rut.util.algorithm.support.SelectionSort; o)H| #9h5  
import org.rut.util.algorithm.support.ShellSort; NFI~vkk'G  
kWgrsN+Z  
/** (mx}6A  
* @author treeroot !ozHS_  
* @since 2006-2-2 9 $zx<O  
* @version 1.0 Jjh=zxR>  
*/ VgMuX3=  
public class SortUtil { 0kaMYV?  
public final static int INSERT = 1; ^ j<2s"S  
public final static int BUBBLE = 2; }p*WH$!~  
public final static int SELECTION = 3; /km0[M  
public final static int SHELL = 4; L tK,_j  
public final static int QUICK = 5; 7+rroCr"  
public final static int IMPROVED_QUICK = 6; $^W|@et{ ]  
public final static int MERGE = 7; >skl-f  
public final static int IMPROVED_MERGE = 8; TIno"tc3  
public final static int HEAP = 9; gKRlXVS  
|j4;XaG)  
public static void sort(int[] data) { _ + >V(,{G  
sort(data, IMPROVED_QUICK); unyU|B  
} \3 O1o#=(  
private static String[] name={ ,N8SP 'R  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N^jr  
}; ~2QD.(  
hjp,v)#  
private static Sort[] impl=new Sort[]{ wLo<gA6;  
new InsertSort(), (>gb9n  
new BubbleSort(), <M\#7.](  
new SelectionSort(), @y,>cDg  
new ShellSort(), YyC$\HH6  
new QuickSort(), >FL%H=]  
new ImprovedQuickSort(), Tlk!6A:  
new MergeSort(), *++}ll6  
new ImprovedMergeSort(), svMu85z  
new HeapSort() 'Kd-A:K2g  
}; dRBWJ/ 1T  
e)|5 P  
public static String toString(int algorithm){ mEbj  
return name[algorithm-1]; i \@a&tw  
} D*ZswHT{y  
"1hFx=W+\  
public static void sort(int[] data, int algorithm) { 'w_Qs~6~{  
impl[algorithm-1].sort(data); Q 2 B  
} RF'&.RtVa  
~P"o_b6,k  
public static interface Sort { A#]78lR  
public void sort(int[] data); Xkf|^-n  
} [vxHsY3z  
ubl)$jZ:Q  
public static void swap(int[] data, int i, int j) { _Pn 1n  
int temp = data; (ZQ?1Qxo  
data = data[j]; R HmT$^=  
data[j] = temp; &cy<"y  
} Kae-Y  
} \ F)}brPc  
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