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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。 FaM~ 56Pa  
插入排序: $B/cj^3  
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package org.rut.util.algorithm.support; #8|NZ6x,  
l.)!jWY  
import org.rut.util.algorithm.SortUtil; E6)mBAE  
/** #| Po&yu4R  
* @author treeroot 5q >u }J  
* @since 2006-2-2 (8R M|&  
* @version 1.0 %>z}P&Yz  
*/ K; lC#  
public class InsertSort implements SortUtil.Sort{ R6Lr]H  
1 j8,Zrg1  
/* (non-Javadoc) d(XWt;KK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ji%BwJ  
*/ V [>5  
public void sort(int[] data) { n-_w0Y  
int temp; 95&HsgdxJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7 #N @B  
} ?H?r!MZ%  
} eu;^h3u;b  
} -nSqB{s!SD  
5. i;IOx  
} Y8(yOVy9  
nU)f]4q{Ec  
冒泡排序: CcQ|0  
&aOOG8l  
package org.rut.util.algorithm.support; ".4^?d_^VF  
HC+R :Dz  
import org.rut.util.algorithm.SortUtil; / [M~##%:  
8%Lg)hvl  
/** ?`$4ZDM  
* @author treeroot FTe#@\I  
* @since 2006-2-2 ?9"glzxr  
* @version 1.0 #'P&L>6 ;  
*/ = '[@UVH(Z  
public class BubbleSort implements SortUtil.Sort{ G39t'^ZK*#  
x uF_^  
/* (non-Javadoc) b`mEnI VIz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WRCi!  
*/ RB2u1]l  
public void sort(int[] data) { cW\7yZh  
int temp;  "(xu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !Fi)-o  
if(data[j] SortUtil.swap(data,j,j-1); *h1@eJHMz  
} v:'y&yS  
} -}s?!Pg>  
} .:}\Z27-c  
} CAO$Zt  
~7v^7;tT  
} Bb)J8,LQ  
E_P]f%  
选择排序: <Bwu N,}  
#@ G2n@Hj  
package org.rut.util.algorithm.support; [Pay<]c6g  
'J}lnt[V  
import org.rut.util.algorithm.SortUtil; |d$aIS O`  
|Cm}%sgR\0  
/** We|*s2!  
* @author treeroot |j;`;"+B  
* @since 2006-2-2 Q5ux**(Wr  
* @version 1.0 ocvBKsfhE`  
*/ 7">.{ @S  
public class SelectionSort implements SortUtil.Sort { lU?"\m  
XB?!V|bno  
/* ny}?+&K  
* (non-Javadoc) FUQT,7CA  
* )S]c'}^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rpvm].4  
*/ +1rJ;G  
public void sort(int[] data) { '{|87kI  
int temp; TS-[p d  
for (int i = 0; i < data.length; i++) { @`T6\ 1  
int lowIndex = i; 2iUF%>  
for (int j = data.length - 1; j > i; j--) { 7M4iBk4I  
if (data[j] < data[lowIndex]) { F>&8b^v bn  
lowIndex = j; EV}%D9:  
} + 7Z%N9  
} Gce![<|ph  
SortUtil.swap(data,i,lowIndex); V/03m3!q  
} v;OA hFr|  
} __a9}m4i7x  
3KqylC &.  
} }\9qN!ol  
KMZ% 1=a  
Shell排序: y==x  
>yaRz+  
package org.rut.util.algorithm.support; jWm<!< ~  
-1@kt<Es  
import org.rut.util.algorithm.SortUtil; =lzjMRX(?  
a^CIJ.P2  
/** J[^-k!9M  
* @author treeroot 3o1j l2n  
* @since 2006-2-2 !$O +M#  
* @version 1.0 5!wa\)wY  
*/ 1PWDK1GI8  
public class ShellSort implements SortUtil.Sort{ y+c+/L8  
F: \CDM=lS  
/* (non-Javadoc) KjhOz%Yt[o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S-im o  
*/ H:CwUFL  
public void sort(int[] data) { \E n^Vf  
for(int i=data.length/2;i>2;i/=2){ i# QI}r  
for(int j=0;j insertSort(data,j,i); $:>K-4X\}  
} s01n[jQ  
} FN G]  
insertSort(data,0,1); wE'~Qj  
} NZv1dy`fa  
QqRL>.)W  
/** &L_(yJ~-  
* @param data gg<lWeS/3  
* @param j w'}b 8m(L  
* @param i fi1tF/ `  
*/ $[H3O(B0*  
private void insertSort(int[] data, int start, int inc) { +"Ka #Z  
int temp; d}Q;CF3 m:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i7iL[+f]Q  
} t)5bHVx  
} O Qd,.m  
} Qax=_[r  
BeBa4s  
} *S7<QyVh  
p2\@E} z  
快速排序: aCQAh[T  
"I u3&mc  
package org.rut.util.algorithm.support; V4_ZBeWA  
E-CZk_K9  
import org.rut.util.algorithm.SortUtil; wPyfne?~,  
caS5>wk`R  
/** w?Y;pc}1B  
* @author treeroot Py K)ks!6  
* @since 2006-2-2 g%Eb{~v  
* @version 1.0 0ZTT^2R  
*/ y%f'7YZ4  
public class QuickSort implements SortUtil.Sort{ I t",WFE.  
af.yC[  
/* (non-Javadoc) 67 ^?v)|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N_wB  
*/ WS4J a$*  
public void sort(int[] data) { L2+~I<|>  
quickSort(data,0,data.length-1); }qxw Nmx  
} 6VW&An[6r  
private void quickSort(int[] data,int i,int j){ Ub3^Js!b%  
int pivotIndex=(i+j)/2; I vO#tI  
file://swap Tw 8$6KUW  
SortUtil.swap(data,pivotIndex,j); M/T ll]\|  
 BVU>M*k  
int k=partition(data,i-1,j,data[j]); q9|'!m5K  
SortUtil.swap(data,k,j); ] %pr1Ey  
if((k-i)>1) quickSort(data,i,k-1); 8a)lrIg  
if((j-k)>1) quickSort(data,k+1,j); mSr(PIH{\  
s>ilxLSX]  
} n2cb,b/7  
/** icH\(   
* @param data ^i:%0"[*^i  
* @param i qi!+ Ceo}  
* @param j w6aq/m"'  
* @return G?*)0`~W  
*/ FbhF45H  
private int partition(int[] data, int l, int r,int pivot) { <<4U:  
do{ yJNQO'wcv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @X5F$=aqZr  
SortUtil.swap(data,l,r); @#rF8;  
} g\:(1oY  
while(l SortUtil.swap(data,l,r); WWZ`RY  
return l; P9c!   
} br`cxgZ0"  
~qT5F)$B-  
}  b"iPuN!p  
;<hLy(@  
改进后的快速排序: yH/m@#  
_TEjB:9eY  
package org.rut.util.algorithm.support; R.^ Y'TLyc  
aYW 9 C<5  
import org.rut.util.algorithm.SortUtil; Bq@_/*'*Y  
bi~1d"j  
/** }hRw{#*8  
* @author treeroot ebfT%_N  
* @since 2006-2-2 05hjC  
* @version 1.0 UU'0WIbY6  
*/ a]\l:r  
public class ImprovedQuickSort implements SortUtil.Sort { 4h~CDy%_  
stQRl_('  
private static int MAX_STACK_SIZE=4096; %W` }  
private static int THRESHOLD=10; e*)*__$O  
/* (non-Javadoc) FLUvFD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~xCv_u^=  
*/ x,L<{A`z  
public void sort(int[] data) { v(=?@ tF}E  
int[] stack=new int[MAX_STACK_SIZE]; zi%Ql|zI~  
eI%9.Cx#I  
int top=-1; @S9^~W3G3  
int pivot; <<w*_GM  
int pivotIndex,l,r; /xq^]0xy  
\:y oS>G  
stack[++top]=0; QNWGUg4*&  
stack[++top]=data.length-1; 5Q7Z$A1a 9  
h>k[  
while(top>0){ < #FxI  
int j=stack[top--]; Cg_9V4h.C  
int i=stack[top--]; u'`eCrKT*  
SFJ"(ey$  
pivotIndex=(i+j)/2; lV".-:u_  
pivot=data[pivotIndex]; AdD,94/  
J~}sQ{ 0  
SortUtil.swap(data,pivotIndex,j); ANWfRtiU#  
'9u(9S  
file://partition fQQj2> 3w  
l=i-1; z_f^L %J0  
r=j; D||)H  
do{ FdGnNDl*e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Xrl# DN  
SortUtil.swap(data,l,r); L0.F }~S  
} X~g U$  
while(l SortUtil.swap(data,l,r); Ahk q  
SortUtil.swap(data,l,j); 3FY87R   
j[CXIz?c  
if((l-i)>THRESHOLD){ <c3Te$.  
stack[++top]=i; oZ5 ,y+L4  
stack[++top]=l-1; L9{y1'')  
} Y[!s:3\f  
if((j-l)>THRESHOLD){ fDjJdRS"  
stack[++top]=l+1; 4v.{C"M  
stack[++top]=j; jZr"d*Y  
} ]$~\GE^  
I >aKa  
} dOX"7kZ  
file://new InsertSort().sort(data); ?k`UQi]Q  
insertSort(data); 'D'H)J  
} "O~7s}  
/** H7FOf[3'  
* @param data 9CG&MvF c  
*/ O@HL%ha  
private void insertSort(int[] data) { QpCTHpZ  
int temp; (}m2}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (&MtK1;;  
} %/oeV;D  
} Cz|F%>y#  
} NK\0X5##.  
i&^]qL|J  
} AO]k*N,N  
w?V;ItcL  
归并排序: Fe1XczB  
ka/>jV"  
package org.rut.util.algorithm.support; )LAG$Cn  
qh|fq b  
import org.rut.util.algorithm.SortUtil; 6t=)1T  
.WLwAL  
/** u-M Td  
* @author treeroot )=nB32~J"  
* @since 2006-2-2 b$q~(Z}  
* @version 1.0 V3Ep&<=/  
*/ /Z~5bb(  
public class MergeSort implements SortUtil.Sort{ LNcoTdv}k  
=%SH2kb  
/* (non-Javadoc) +,]_TxL|C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0YZ66VN!  
*/ :{,k F  
public void sort(int[] data) { cs9"0&JX  
int[] temp=new int[data.length]; l6- n{zG  
mergeSort(data,temp,0,data.length-1); 6zIK%<  
} W[f%m0  
)>tT ""yEl  
private void mergeSort(int[] data,int[] temp,int l,int r){ %/2OP &1<  
int mid=(l+r)/2; l?A~^4(5a/  
if(l==r) return ; []doLt;J  
mergeSort(data,temp,l,mid); s.^+y7$  
mergeSort(data,temp,mid+1,r); Th X6e  
for(int i=l;i<=r;i++){ .oM;D~(=9  
temp=data; 5,|of{8  
} tIk$4)ZAl  
int i1=l; JFdMYb  
int i2=mid+1; ?$MO!  
for(int cur=l;cur<=r;cur++){ Rrrq>{D  
if(i1==mid+1) lS|F&I5j  
data[cur]=temp[i2++]; {A~3/M%74;  
else if(i2>r) (%'`t(<  
data[cur]=temp[i1++]; P~84#5R1  
else if(temp[i1] data[cur]=temp[i1++]; z))rk vL%  
else N)/7j7c~;  
data[cur]=temp[i2++]; tzY?LX[3  
} @1~cPt   
} XVF!l>nE  
5Y 7 %Z  
} m2HO .ljc  
OaKr_m  
改进后的归并排序: tkQrxa|  
!yvw5As%  
package org.rut.util.algorithm.support; W/VE B3P>Z  
`#:(F z  
import org.rut.util.algorithm.SortUtil; b/_u\R ]-'  
7)RRCsn  
/** Z+=WICI/2  
* @author treeroot >,.\`.0  
* @since 2006-2-2 '|}H ,I{  
* @version 1.0 5&.I9}[)j  
*/ I+QM":2  
public class ImprovedMergeSort implements SortUtil.Sort { #r,!-;^'p  
cd`P'GDF  
private static final int THRESHOLD = 10; g'Wr+( A_  
Z 5g*'  
/* U] P{~  
* (non-Javadoc) <kJ`qbOU  
* |9Y~k,rF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y7,t "XV  
*/ {8 &=t8,c  
public void sort(int[] data) { vXZ )  
int[] temp=new int[data.length]; {N << JX  
mergeSort(data,temp,0,data.length-1); ^9]g5.z:  
} H6Ytp^~>  
kkJ8xyO  
private void mergeSort(int[] data, int[] temp, int l, int r) { PzT@q\O  
int i, j, k; --k!KrL  
int mid = (l + r) / 2; :Dfl,=S  
if (l == r) x_9#:_S'  
return; ltyhYPS  
if ((mid - l) >= THRESHOLD) s )Xz}QPK.  
mergeSort(data, temp, l, mid); ']d(m?  
else vsPIvW!V  
insertSort(data, l, mid - l + 1); {L \TO,  
if ((r - mid) > THRESHOLD)  4&%E?_M  
mergeSort(data, temp, mid + 1, r); 36Lf8~d4"h  
else t qUBl?i  
insertSort(data, mid + 1, r - mid); Zq 'FOzs  
0d$LUQ't  
for (i = l; i <= mid; i++) { !^EA}N.u  
temp = data; N'PK4:  
} ~Lq`a@]A  
for (j = 1; j <= r - mid; j++) { YV'B*arIA  
temp[r - j + 1] = data[j + mid]; Esm=sPW  
} b~{nS,_Rn  
int a = temp[l]; :UX8^+bfZ  
int b = temp[r]; -c{Y+M`  
for (i = l, j = r, k = l; k <= r; k++) { 1ed^{Wa4$9  
if (a < b) { {suQ"iv  
data[k] = temp[i++]; }rnu:7  
a = temp; p&\DG  
} else { : rudo[L  
data[k] = temp[j--]; 8bf@<VTO_  
b = temp[j]; E&Zt<pRf;2  
} fl4 0jo]  
} 8@){\.M  
} [!Djs![O  
-0I&dG-  
/** b!`6s  
* @param data YDZB$?&a  
* @param l c[;A$P= 8.  
* @param i xiL+s-   
*/ sGh TP/  
private void insertSort(int[] data, int start, int len) { EWq < B)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wKoar  
} o}D }Q"=A  
} 4;(W0RQa  
} CtUAbR  
} flz7{W  
+U>Y.YP  
堆排序: 9{rE7OX*A  
F6\4[B  
package org.rut.util.algorithm.support; 7\X_%SM%  
ulk/I-y  
import org.rut.util.algorithm.SortUtil; s){VU2.ra  
'H"!%y{:i  
/** ?m9=Me  
* @author treeroot I,aaSBwt&2  
* @since 2006-2-2 uL:NWgN  
* @version 1.0 e;LC\*dG  
*/ gQ|?~hYYv  
public class HeapSort implements SortUtil.Sort{ "`mG_qHI[  
~mZ[@ Z  
/* (non-Javadoc) -a l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 69t6lB#;!  
*/ Hd TB[(  
public void sort(int[] data) { b8[ ayy  
MaxHeap h=new MaxHeap(); sxdDI?W4  
h.init(data); ma/<#l^}  
for(int i=0;i h.remove(); 7mn&w$MS4:  
System.arraycopy(h.queue,1,data,0,data.length); sQ&<cBs2  
} C0khG9,BL  
7W+{U0 2O  
private static class MaxHeap{ >wR)p\UEb  
s7\Ee-x)s  
void init(int[] data){ uz:r'+v  
this.queue=new int[data.length+1]; x7i,jMR  
for(int i=0;i queue[++size]=data; BAG#YZB  
fixUp(size); nITkgN:s  
} |x=(}g  
} ,#9i=gp  
+i}uRO  
private int size=0; MlLM $Y-@  
,Ww.W'#P  
private int[] queue; bIzBY+P  
&'/bnN +R  
public int get() { 1uEM;O  
return queue[1]; M5x MTP-  
} -zZb]8\E  
3ly ]DTbz  
public void remove() { <p?oFD_e4  
SortUtil.swap(queue,1,size--); vrh2}biCR  
fixDown(1); Xi~I<&  
} B7S)L#l_\  
file://fixdown g6$\i m  
private void fixDown(int k) { _s:5)  
int j; ) bd`U  
while ((j = k << 1) <= size) { Yf1%7+V35  
if (j < size %26amp;%26amp; queue[j] j++; '#yIcV$  
if (queue[k]>queue[j]) file://不用交换 2+K - I  
break; Cd_H<8__  
SortUtil.swap(queue,j,k); 'oM=ZU8wo  
k = j; Wd7qpWItjQ  
} X@/wsW(kM\  
} q9\(<<f|  
private void fixUp(int k) { :3b\pEO9\  
while (k > 1) { n" vO?8Sx  
int j = k >> 1; 6aWNLJ@  
if (queue[j]>queue[k]) V<U9Pj^?^  
break; q AsTiT6r  
SortUtil.swap(queue,j,k); C?<[oQb#  
k = j; f'tQLF[r<  
} Z}IuR|=  
} d_ &~^*>  
Gsy90  
} $dKo}  
gEmsPk,  
} #8%~u+"N  
82 1 6_Qm  
SortUtil: P` Gb }]rW  
0OnqKgf  
package org.rut.util.algorithm; }_Y\6fcd  
' R= OeH  
import org.rut.util.algorithm.support.BubbleSort; a!&m\+?  
import org.rut.util.algorithm.support.HeapSort; |T*t3}  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3g0v,7,Zv  
import org.rut.util.algorithm.support.ImprovedQuickSort; YdYaLTz  
import org.rut.util.algorithm.support.InsertSort; VK|$SY(  
import org.rut.util.algorithm.support.MergeSort; LX(`@-<DH  
import org.rut.util.algorithm.support.QuickSort; 20M]gw]  
import org.rut.util.algorithm.support.SelectionSort;  ~!e(e2  
import org.rut.util.algorithm.support.ShellSort; X1Kze  
d1NKVMeWr  
/** $SzuUI  
* @author treeroot vJQ_mz  
* @since 2006-2-2 >/.Ae8I)  
* @version 1.0 bV*q~ @xh  
*/ 7!e kINQ  
public class SortUtil { /g!X[rn7Q  
public final static int INSERT = 1; D6'-c#  
public final static int BUBBLE = 2; o KY0e&5  
public final static int SELECTION = 3; 2W/*1K}  
public final static int SHELL = 4; 7+$P6[*  
public final static int QUICK = 5; n]K{-C;  
public final static int IMPROVED_QUICK = 6; "&\]1A}Z-x  
public final static int MERGE = 7; {!pYQ|#  
public final static int IMPROVED_MERGE = 8; .|y{1?f_  
public final static int HEAP = 9; /f>I;z1  
;v ~xL!uQ  
public static void sort(int[] data) { Fl\kt.G  
sort(data, IMPROVED_QUICK); Ujvk*~:  
} G.^^zmsM`  
private static String[] name={ T1RICIf 1F  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,!98V Jmr  
}; OV-#8RXJ  
K48 QkZ_gY  
private static Sort[] impl=new Sort[]{ h 3p~\%^  
new InsertSort(), x`K"1E{2  
new BubbleSort(), '~xjaa;.  
new SelectionSort(), u}jC$T>2%6  
new ShellSort(), 't475?bY  
new QuickSort(), :|=Xh"l"  
new ImprovedQuickSort(), CSr2\ogT  
new MergeSort(), y*lAmO  
new ImprovedMergeSort(), )!sjXiC!h  
new HeapSort() ?!bA#aSbl5  
}; T 6=~vOzTJ  
?cD_\~  
public static String toString(int algorithm){ "@itn  
return name[algorithm-1]; nwJc%0  
} ? Lr:>  
l YjPrA]TC  
public static void sort(int[] data, int algorithm) { |(5|6r3  
impl[algorithm-1].sort(data); +4k4z:<n  
} ?T>NvKF  
 s)9 sb J  
public static interface Sort { N&W7g#F  
public void sort(int[] data); "I3&a1*  
} _D1)_?`a@-  
oXGP6#  
public static void swap(int[] data, int i, int j) { ,"T[#A~  
int temp = data; e!4Kl:  
data = data[j]; 1tH#QZIT  
data[j] = temp; z| zd=3c  
} 21~~=+)X  
} .1[pO_  
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