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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。 4).>b3OhX  
插入排序: ]Vgl  
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package org.rut.util.algorithm.support; Z CS{D  
'1yy&QUZq  
import org.rut.util.algorithm.SortUtil; (@1*-4l  
/** hh>mX6A  
* @author treeroot 1?bX$$y l;  
* @since 2006-2-2  *$o{+YP  
* @version 1.0 xYCX}bksh  
*/ N HL{.8L{  
public class InsertSort implements SortUtil.Sort{ P(&9S`I  
VwV`tKit  
/* (non-Javadoc) -964#>n[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GS4 HYF  
*/ Qs.g%  
public void sort(int[] data) { -l` 1j6  
int temp; pn6!QpV5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~wsD g[  
} ?H_'L4Wv  
} A 9HJWKO  
}  R)?zL;,x  
^UAL5}CQt  
} RxVf:h'l  
)pA N_e"  
冒泡排序: yPqZ ,  
(C EXPf  
package org.rut.util.algorithm.support; 4_w+NI,;  
uZ(j"y  
import org.rut.util.algorithm.SortUtil; vQpR0IEf]e  
:D'#CoBA  
/** `Vqp o/  
* @author treeroot aGY F\7  
* @since 2006-2-2 51k^?5cO  
* @version 1.0 F! ;0eS"xp  
*/ |Skk1 #  
public class BubbleSort implements SortUtil.Sort{ 9ZEF%&58Y  
//}[(9b'\  
/* (non-Javadoc) /U#{6zeM[,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xbb('MoI63  
*/ -S7rOq2Li  
public void sort(int[] data) { V_g9oR_  
int temp; 9\]%N;;Lo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -  zQ  
if(data[j] SortUtil.swap(data,j,j-1); t<6`?\Gk  
} {IW pI *  
} @]H:=Q'gj  
} gB\KD{E  
} Ex ?)FL$4  
`_6!nk q8  
} {{?[b^  
@,63%  
选择排序: K~_[[)14b  
<|s9@;(I  
package org.rut.util.algorithm.support; nKJJ7 R L  
"s]c79t  
import org.rut.util.algorithm.SortUtil; bX:ARe O  
^< ,Np+  
/** Jk)^6  
* @author treeroot 0vs9# <&V  
* @since 2006-2-2 q=5#t~?  
* @version 1.0 +FWkhmTv  
*/ 4 }l,F  
public class SelectionSort implements SortUtil.Sort { r2T-=XWB  
/ W}Za&]  
/* b0 CtQe  
* (non-Javadoc) P{eL;^I  
* !S[8w9q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |-hzvuSX  
*/ #KonVM(`  
public void sort(int[] data) { rlvo&(a  
int temp; byYdX'd.  
for (int i = 0; i < data.length; i++) { {@u;F2?  
int lowIndex = i; _-*Lj;^V  
for (int j = data.length - 1; j > i; j--) { BC0T[o(f8  
if (data[j] < data[lowIndex]) { x8 sSb:N  
lowIndex = j; (L?fYSP!  
} yFT)R hN  
} "$? f&*  
SortUtil.swap(data,i,lowIndex); i!jZZj-{  
} bGvALz'  
} d* Y&V$?zl  
"qRE1j@%a  
} > ln%3 =  
9d4PH  
Shell排序: dlC)&Ai  
)g:\N8AZK  
package org.rut.util.algorithm.support; ;$G.?r  
9}FWO&LiB  
import org.rut.util.algorithm.SortUtil; nBGFa  
)DsC:cP  
/** J'O</o@e  
* @author treeroot Z@=1-l  
* @since 2006-2-2 wj/\ !V!  
* @version 1.0 <h2WM (n  
*/  = uZ[  
public class ShellSort implements SortUtil.Sort{ nJ#uz:(w,  
~ jb6  
/* (non-Javadoc) s% "MaDz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /a%5!)NE%  
*/ &,xN$  
public void sort(int[] data) { #N%xr'H  
for(int i=data.length/2;i>2;i/=2){  UfEF>@0  
for(int j=0;j insertSort(data,j,i); I=wP"(2  
} 1O1/P,u+  
} ?k~(E`ZE3  
insertSort(data,0,1); dF*@G/p>V  
} }+0{opY4R  
;CD.8f]N  
/** cs7T AX  
* @param data 7z"xjA  
* @param j {T Z7>k  
* @param i V+X>t7.Q  
*/ 2JZf@x+}  
private void insertSort(int[] data, int start, int inc) { .N8AkQ(Ok  
int temp; <jT6|2'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K*Zf^g m  
} #CoJ S[t  
} ~#dNGWwG  
} 2H_|Attoi  
*ta ``q  
} NIeT.!  
5 fjeBfy  
快速排序: _*1/4^  
w{Wz^=';  
package org.rut.util.algorithm.support;  /E/J<  
etj8M y6=  
import org.rut.util.algorithm.SortUtil; T9\wkb.  
\X5{>nNh  
/** bort2k  
* @author treeroot TmG$Cjf84  
* @since 2006-2-2 ua*k{0[  
* @version 1.0 AoL4#.r3H  
*/ o&1ewE(O]  
public class QuickSort implements SortUtil.Sort{ '$W@I  
kJqgY|  
/* (non-Javadoc) Qwb=N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *D1 ^Se  
*/ 0.C y4sH'  
public void sort(int[] data) { _rXTHo7P  
quickSort(data,0,data.length-1); Tm5]M$)  
} ^#2w::Ds}!  
private void quickSort(int[] data,int i,int j){ ppjd.  
int pivotIndex=(i+j)/2; jpZ, $  
file://swap ;sCf2TD,_  
SortUtil.swap(data,pivotIndex,j); 3(G}IWPq<  
Y"~I(,nx!  
int k=partition(data,i-1,j,data[j]); )y(pd  
SortUtil.swap(data,k,j); zlZ$t{[,  
if((k-i)>1) quickSort(data,i,k-1); 40N8?kQ}?  
if((j-k)>1) quickSort(data,k+1,j); 5BCXI8Ox9x  
EAU6z(X$  
} yf+M  
/** [f}YXQ0N)  
* @param data mOr>*uR  
* @param i Cfu]umZLn  
* @param j VS<E?JnbFV  
* @return [s$vY~_  
*/ q' 77BRD3  
private int partition(int[] data, int l, int r,int pivot) { 6wx;grt'Z  
do{ *|ez|*-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :l8n)O3  
SortUtil.swap(data,l,r); yTwv2l;U  
} r7/y'Y]O  
while(l SortUtil.swap(data,l,r); @dQIl#  
return l; I.TdYSB  
} >4`("#  
XtVx H4q  
} l=U@j T  
Enn7p9&  
改进后的快速排序: qc\]~]H]r  
6Y0k}+j|>E  
package org.rut.util.algorithm.support; An!1>`8r  
n=l>d#}$%T  
import org.rut.util.algorithm.SortUtil; J`a$"G B.  
Aa-L<wZVPt  
/** fOCLN$x^  
* @author treeroot 4%1sOnl  
* @since 2006-2-2 hIu;\dfwk  
* @version 1.0 N|5J-fR&  
*/ (:Rj:8{  
public class ImprovedQuickSort implements SortUtil.Sort { AJt *48H*G  
:@{(^}N8u  
private static int MAX_STACK_SIZE=4096; JsI` #  
private static int THRESHOLD=10; t7tX<|aN  
/* (non-Javadoc) |u8IQR'B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X&fM36o7  
*/ Hj't.lg+j  
public void sort(int[] data) { wl H6  
int[] stack=new int[MAX_STACK_SIZE]; z[X>>P3<n  
$L_-U~^  
int top=-1; p'fq&a+  
int pivot; M_*"g>Z  
int pivotIndex,l,r; <7R\ #  
#qY`xH'>  
stack[++top]=0; YKKZRlQo  
stack[++top]=data.length-1; hRTw8-wy:  
NpqMdd   
while(top>0){ n@  lf+  
int j=stack[top--]; , f{<  
int i=stack[top--]; WzZ<ZCHm  
S[(Tpk2_  
pivotIndex=(i+j)/2; |;e K5(|  
pivot=data[pivotIndex]; Aon 3G  
P*Va<'{:{  
SortUtil.swap(data,pivotIndex,j); Lg Xc}3  
<VI.A" Qk~  
file://partition p A7&  
l=i-1; UIgs/  
r=j; cO%-Av~P  
do{ IHHL. gT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); low 0@+Q  
SortUtil.swap(data,l,r); >Lj0B%^EvM  
} !qk+>6~A,  
while(l SortUtil.swap(data,l,r); K8M[xaI@  
SortUtil.swap(data,l,j); TG 9 a1q  
yXP+$oox9  
if((l-i)>THRESHOLD){ ]R[j ]E.  
stack[++top]=i; ? cU9~=  
stack[++top]=l-1; KGb:NQ=O6i  
} .Qk T-12  
if((j-l)>THRESHOLD){ lWr=79  
stack[++top]=l+1; ln.'}P  
stack[++top]=j; {7swE(N  
} EYWRTh  
y,'M3GGl  
} vYb.Ub+  
file://new InsertSort().sort(data); D*.U?  
insertSort(data); 0Cd )w4C  
} ?e( y/  
/** n4A_vz  
* @param data shlMJa?  
*/ OZ>w.$ue  
private void insertSort(int[] data) { T40&a(hXQ  
int temp; B!{vSBq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,9;RP/"7  
} MYNNeO  
} VwJ A  
} [`pp[J-~7  
sZ,xbfZby  
} 8Ld{Xg  
SQ&nQzL  
归并排序: A$d)xq-]K  
&%eWCe+ +  
package org.rut.util.algorithm.support; @GTkS!86  
Xc8r[dX  
import org.rut.util.algorithm.SortUtil; Lv;% z  
xE>H:YPm  
/** Y$JGpeq8w  
* @author treeroot Q8-;w{%  
* @since 2006-2-2 N,kPR  
* @version 1.0 i/UDda"E  
*/ J:W|2U="  
public class MergeSort implements SortUtil.Sort{ )B"k;dLm  
lGoP(ki  
/* (non-Javadoc) 2IMU &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3XykIj1  
*/ GZ=7)eJ~<  
public void sort(int[] data) { mQL8ec_c  
int[] temp=new int[data.length]; WXq=FZ-  
mergeSort(data,temp,0,data.length-1); U'4j+vUc  
} &.W,Hh  
Y=G9|7*lO  
private void mergeSort(int[] data,int[] temp,int l,int r){ .M(')$\U  
int mid=(l+r)/2; >- S?rXO  
if(l==r) return ; H(|n,c  
mergeSort(data,temp,l,mid); v9*ugu[K9  
mergeSort(data,temp,mid+1,r); o,qq*}=  
for(int i=l;i<=r;i++){ c_V^~hq  
temp=data; j8Pqc]  
} CG#lpAs  
int i1=l; <O<Kf:i&c1  
int i2=mid+1; |h^[/  
for(int cur=l;cur<=r;cur++){ 6ij L+5  
if(i1==mid+1) 1`6kc9f.  
data[cur]=temp[i2++]; sF. oZ>  
else if(i2>r) \NZ(Xk  
data[cur]=temp[i1++]; >T{Gl/? p  
else if(temp[i1] data[cur]=temp[i1++]; f%,Vplb  
else ,gO}H)v]t  
data[cur]=temp[i2++]; 2uSXC*Phz  
} c/Dk*.xy<  
} O$eNG$7  
\_v jc]?  
} L<D<3g|4  
8NF93tqD6  
改进后的归并排序: 7C;oMh5  
SI)QX\is8  
package org.rut.util.algorithm.support; srbES6  
hZZ  
import org.rut.util.algorithm.SortUtil; 5S9i>B  
T6ihEb$C  
/** ^U q%-a  
* @author treeroot fk*I}pDx  
* @since 2006-2-2 KIRCye  
* @version 1.0 ;{L~|q J  
*/ s78MXS?py  
public class ImprovedMergeSort implements SortUtil.Sort { 6 4,('+  
oMNt676  
private static final int THRESHOLD = 10; !k3 eUBF  
cy-o@U"s8  
/* &u`]Zn   
* (non-Javadoc) Ei HQ&u*  
* kuq&8f~!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2`'g 9R  
*/ B}(r>8?dm  
public void sort(int[] data) { /nq\*)S#&  
int[] temp=new int[data.length]; ?<;9=l\Q  
mergeSort(data,temp,0,data.length-1); QjlQsN!  
} 8l.bT|#O  
N%f% U  
private void mergeSort(int[] data, int[] temp, int l, int r) { n 9>**&5L  
int i, j, k; C ^IPddw>  
int mid = (l + r) / 2; W5*Kq^6Pd  
if (l == r) \V(w=   
return; ""f'L,`{.  
if ((mid - l) >= THRESHOLD) P:#KBF;a  
mergeSort(data, temp, l, mid); :{LNr!I?I  
else \:BixBU7  
insertSort(data, l, mid - l + 1); \; voBU  
if ((r - mid) > THRESHOLD) u<['9U  
mergeSort(data, temp, mid + 1, r); " "@kBY1C  
else \<aR^Sj.  
insertSort(data, mid + 1, r - mid); <rihi:4K  
{Mpx33  
for (i = l; i <= mid; i++) { ~dBx<  
temp = data; wi/qI(O!  
} U-*`I?~=4  
for (j = 1; j <= r - mid; j++) { eKUP,y;[I  
temp[r - j + 1] = data[j + mid]; ~tc,p  
} Yycfb  
int a = temp[l]; V/&JArW  
int b = temp[r]; ]*Cq'<h$  
for (i = l, j = r, k = l; k <= r; k++) { '" 4;;(  
if (a < b) { [C#H _y(  
data[k] = temp[i++]; r!<)CT}D  
a = temp; diWi0@  
} else { OZR{+YrB^  
data[k] = temp[j--]; vbh 5  
b = temp[j]; L9$`zc  
} [xdi.6 %  
} PX- PVW  
} V7"^.W*  
/UqIkc  
/** 4KX\'K  
* @param data %Ze]6TP/><  
* @param l w{WEYS  
* @param i ,hOi5,|?L  
*/ ElA(1o|9I  
private void insertSort(int[] data, int start, int len) { 9vckQCLM  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g)1`A 24  
} sj3[ny;b  
} yBRYEqS+  
} h0&Oy52  
} /,,IM/(6^  
C"QB`f:  
堆排序: onU\[VvM  
l4> c  
package org.rut.util.algorithm.support; 6)veuA3]  
QuIZpP=  
import org.rut.util.algorithm.SortUtil; [X 9zrGHt  
g/ 4ipcG;N  
/** cN:dy#  
* @author treeroot E*x ct-m#  
* @since 2006-2-2 74=zLDDS  
* @version 1.0 c2u*<x  
*/ {G+iobQdd  
public class HeapSort implements SortUtil.Sort{ /5Sd?pW;  
[(2XL"4D  
/* (non-Javadoc) jN AS'JV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6~-,.{Y  
*/ 5.LfN{gE)  
public void sort(int[] data) { +1]A$|qyW  
MaxHeap h=new MaxHeap(); R2A#2{+H  
h.init(data); X4<Y5?&0  
for(int i=0;i h.remove(); {TZV^gT4  
System.arraycopy(h.queue,1,data,0,data.length); DB+oCE<.#  
} bao"iv~z  
FeNNzV=  
private static class MaxHeap{ qfX26<q  
"QvTn=  
void init(int[] data){ >9NC2%61S  
this.queue=new int[data.length+1]; "&/lF[q  
for(int i=0;i queue[++size]=data; @A|#/]S1  
fixUp(size); &~c`p[  
} W9QVfe#s  
} 81H9d6hqcD  
DP-0,Gt&Xj  
private int size=0; N 9s+Tm  
{DapXx  
private int[] queue; DKF` xuJP  
[$c"}=g[+  
public int get() { &`,Y/Cbw  
return queue[1]; @*E=O|  
} Sf*gAwnW  
Q ZC\%X8j  
public void remove() { 6!se,SCvw  
SortUtil.swap(queue,1,size--); -ykD/  
fixDown(1); * ,zrg%8  
} e{H(  
file://fixdown n]6-`fpD  
private void fixDown(int k) { B1A:}#  
int j; lL&U ioo}D  
while ((j = k << 1) <= size) { s!S_Bt):3  
if (j < size %26amp;%26amp; queue[j] j++; DYoGtks(  
if (queue[k]>queue[j]) file://不用交换 dQz#&&s-  
break; {:|b,ep T  
SortUtil.swap(queue,j,k); tXuf!  
k = j; .Q^V,[on1T  
} fRT4>So   
} K $WMrp  
private void fixUp(int k) { +4Fw13ADE  
while (k > 1) { 1Ko4O)L]&  
int j = k >> 1; & WeN{  
if (queue[j]>queue[k]) G+2 ,x0(  
break; hV+=hX<h  
SortUtil.swap(queue,j,k); K)  Ums-b  
k = j; !L@<?0x LW  
} Bg] %  
} Ylyk/  
gZiwXb  
} X:lStO#5  
Y^nm{;G+  
} GKKDO+A=!  
?\kuP ?\  
SortUtil: <xe_t=N  
Cg|\UKfy$  
package org.rut.util.algorithm; LIrebz  
|MOz> 1<a  
import org.rut.util.algorithm.support.BubbleSort; UZs'H"K  
import org.rut.util.algorithm.support.HeapSort; -L<FVB  
import org.rut.util.algorithm.support.ImprovedMergeSort; LJom+PxF$x  
import org.rut.util.algorithm.support.ImprovedQuickSort; *<[zG7+&[  
import org.rut.util.algorithm.support.InsertSort; t 4VeXp6  
import org.rut.util.algorithm.support.MergeSort; /::Y &&$f  
import org.rut.util.algorithm.support.QuickSort; 4U16'd  
import org.rut.util.algorithm.support.SelectionSort; WEJ-K<A(  
import org.rut.util.algorithm.support.ShellSort; !iq|sXs  
#G_'5{V  
/** T|0+o+i  
* @author treeroot ]1pB7XL  
* @since 2006-2-2 1w,34*-}  
* @version 1.0 AF8:bk,R  
*/ eco&!R[G  
public class SortUtil { [ [pt~=0  
public final static int INSERT = 1; !.-u'6e  
public final static int BUBBLE = 2; 'kco. 1{  
public final static int SELECTION = 3; "$aoIXv  
public final static int SHELL = 4; B,&QI&k`~  
public final static int QUICK = 5; y=.bn!u}z  
public final static int IMPROVED_QUICK = 6; J .VZD  
public final static int MERGE = 7; O;5lF  
public final static int IMPROVED_MERGE = 8; ?;H}5>^8P  
public final static int HEAP = 9; x7Gf):,LK  
ktS^^!,l%  
public static void sort(int[] data) { L|}s Z\2!  
sort(data, IMPROVED_QUICK); [ [w |  
} 3<xDxj 0<  
private static String[] name={ >x3lA0m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B^]PKjLNZ  
}; fUGappb  
Zxhbnl6  
private static Sort[] impl=new Sort[]{ YaL:6[6  
new InsertSort(), OScqf]H  
new BubbleSort(), s2GF*{  
new SelectionSort(), (KwC,0p  
new ShellSort(), =Xg/[J%  
new QuickSort(), 0:>hK\F#  
new ImprovedQuickSort(), 4P"bOt5izR  
new MergeSort(), kN78j  
new ImprovedMergeSort(), I{r*Y9  
new HeapSort() l^OflZC~  
}; ZHa>8x;Mjl  
Yb4ku7}  
public static String toString(int algorithm){ M0~%[nX  
return name[algorithm-1]; !_QT{H  
} 7 7y+ik  
N_S~&(I|  
public static void sort(int[] data, int algorithm) { RGs7Hc  
impl[algorithm-1].sort(data); ? dHl'  
} wwywiFj  
aidQ,(PDj  
public static interface Sort { AS@(]T#R  
public void sort(int[] data); 2%L`b"9}V  
} beC%Tnb7  
)XGz#C_P  
public static void swap(int[] data, int i, int j) { Lt=32SvTn  
int temp = data; 1YJ?Y  
data = data[j]; biU_ImJ>0  
data[j] = temp; |Tc4a4jS  
} zL9~gJ  
} $+_1F`  
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