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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。 G};os+FxF  
插入排序: 0b9;v lGq$  
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package org.rut.util.algorithm.support; \WG6\Zg0A  
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import org.rut.util.algorithm.SortUtil; W3s>+yU  
/** 3~~KtH=  
* @author treeroot Y<0;;tVf4U  
* @since 2006-2-2 Yy6Mkw7X  
* @version 1.0 =m.Lw  
*/ V&U1WV/  
public class InsertSort implements SortUtil.Sort{ B#Cb`b"  
p]/HZS.-b  
/* (non-Javadoc) QFMR~6 ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F.2<G.9  
*/ &<}vs`W  
public void sort(int[] data) { 4}@J]_]Z  
int temp; q(sEN!^L`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @sUYjB  
} W($}G_j[B1  
} kH'LG!O  
} H`#{zt);  
b^[Ab:`}[V  
} #@s[!4)_I  
hK F*{,'  
冒泡排序: 6-8,qk  
(}ObX!,  
package org.rut.util.algorithm.support; :.wR*E  
w U".^ +  
import org.rut.util.algorithm.SortUtil; ~d]X@(G&  
0 @]gW  
/** XpWcf ([  
* @author treeroot 28,Hd!{  
* @since 2006-2-2 m)l<2 `CM  
* @version 1.0 LpCJfQ  
*/ g\_J  
public class BubbleSort implements SortUtil.Sort{ 2d),*Cvf  
!C13E lf  
/* (non-Javadoc) E,u/^V9x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &QHZ]2%U  
*/ $*N^ bj  
public void sort(int[] data) { PkM]jbLe8  
int temp; wq K:=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |^l17veA@  
if(data[j] SortUtil.swap(data,j,j-1); O5X@'.#rU  
} {}gx;v)  
} vXA+o)*#/  
} >6yA+?[:  
} :g&9v_}&K{  
1ym^G0"s  
} TS2zzYE6Z  
`Hlv*" w$  
选择排序: 8v{0=9,Z  
CuT~ Bj  
package org.rut.util.algorithm.support; B\WIoz;'  
eKpWFP 0  
import org.rut.util.algorithm.SortUtil; 3[_zz;Y*d  
fHFy5j0H  
/** Q[rmsk 2L'  
* @author treeroot prypo.RI  
* @since 2006-2-2 {3)^$F=T  
* @version 1.0 W20qn>{z  
*/ d2\#Zlu<  
public class SelectionSort implements SortUtil.Sort { \eH`{Z'.x5  
)By #({O  
/* ~)fd+~4L  
* (non-Javadoc) b=87k  
* Fu%D2%V$/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `8x.Mv  
*/ 3'*}ZDC  
public void sort(int[] data) { GkU]>8E'"  
int temp;  b79z<D  
for (int i = 0; i < data.length; i++) { a ]b%v9  
int lowIndex = i; 0&21'K)pW  
for (int j = data.length - 1; j > i; j--) { ?z{Z!Bt?=)  
if (data[j] < data[lowIndex]) { F/ si =%  
lowIndex = j; l|jb}9(J  
} cXDG(.!n7B  
} !C6[m1F  
SortUtil.swap(data,i,lowIndex); +$CO  
} W{!Slf  
} WHkrd8  
}f;cA  
} h.t2;O,b  
h 0c&}kM  
Shell排序: ]"X} FU  
.}*_NU   
package org.rut.util.algorithm.support; g[D `.  
b!l/O2 G  
import org.rut.util.algorithm.SortUtil; `21$e  
w+Oo-AGNH  
/** 0s2@z5bfX  
* @author treeroot ^`f( Pg!  
* @since 2006-2-2 d{FD.eI 0  
* @version 1.0 L9bIdiB7  
*/ l(A>Rw|  
public class ShellSort implements SortUtil.Sort{ ] RLEyDB  
$ 0Up.  
/* (non-Javadoc) O8<@+xlX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hphfqdh0`  
*/ ;e#bl1%#  
public void sort(int[] data) { 8 aC]" C  
for(int i=data.length/2;i>2;i/=2){ =>u9k:('9  
for(int j=0;j insertSort(data,j,i); rvwfQ'14  
} (cpaMn@)g  
} a"pejW`m  
insertSort(data,0,1); u EE#A0  
} t=6Wk4  
.#wU+t>  
/** <f/wWu}  
* @param data M\w%c5  
* @param j L\/YS;Y  
* @param i 6~y7A<[^  
*/ W:XN!  
private void insertSort(int[] data, int start, int inc) { S /)J<?<b  
int temp; 3^%sz!jK+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AOVoOd+6  
} t^(#~hx  
} t1%<l  
} d*(wU>J '  
^{(i;IVG  
} @ZFU< e$!  
ckg8x&Z  
快速排序: ,`nl";Zc  
4}>1I}!k  
package org.rut.util.algorithm.support; sXmo.{Ayb  
 l6uU S  
import org.rut.util.algorithm.SortUtil; #{L !o5  
e)x;3r"j  
/** t 9Dr%#  
* @author treeroot 9'S~zG%{  
* @since 2006-2-2 Me|+)}'p5h  
* @version 1.0 Hz] p]  
*/ 8G0DuMI5  
public class QuickSort implements SortUtil.Sort{ T.j&UEsd  
D_MNF =7  
/* (non-Javadoc) {Q@pF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dS[="Set  
*/ K`d3p{M  
public void sort(int[] data) { 7Yjxx+X9  
quickSort(data,0,data.length-1); 68v59)0U  
} /|. |y S9  
private void quickSort(int[] data,int i,int j){ >RMp`HxDf  
int pivotIndex=(i+j)/2; <fLk\ =  
file://swap ~jqh&u$(  
SortUtil.swap(data,pivotIndex,j); >X(,(mKi  
EjYCOb-  
int k=partition(data,i-1,j,data[j]); <(%cb.^c=N  
SortUtil.swap(data,k,j); 8(Y=MW;g  
if((k-i)>1) quickSort(data,i,k-1); rLm:qu(F1  
if((j-k)>1) quickSort(data,k+1,j); .+"SDt oX  
i%R2#F7I  
} =>7\s}QZ  
/** g}hR q%  
* @param data UkY `&&ic  
* @param i &xwAE*}  
* @param j =k(~PB^>  
* @return W2a9P_  
*/ XU}sbbwu  
private int partition(int[] data, int l, int r,int pivot) { ]GS@ub  
do{ .2jG~_W[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pSq3\#Twr  
SortUtil.swap(data,l,r); )n[ oP%  
} GAlAFsB  
while(l SortUtil.swap(data,l,r); N!e?K=}tL  
return l; Dl#%tYL+3h  
} Odo"S;)  
-;?5<>zZ  
} w]{NaNIeq1  
}0({c~z\  
改进后的快速排序: ]bq<vI%  
8'2lc  
package org.rut.util.algorithm.support; PG1#Z?_  
mYudUn4Wo  
import org.rut.util.algorithm.SortUtil; k_=~ObA$g  
BlV k?n  
/** ?6bk&"T?  
* @author treeroot 'CH|w~E  
* @since 2006-2-2 rX%qWhiEJ  
* @version 1.0 oj7X9~ nd  
*/ _`JY A  
public class ImprovedQuickSort implements SortUtil.Sort { <h/\)bPB  
oK GFDl]3  
private static int MAX_STACK_SIZE=4096; p,=:Ff}~  
private static int THRESHOLD=10; "}bk *2  
/* (non-Javadoc) $o"PQ!z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^;2dZgJ4^  
*/ <N%8"o  
public void sort(int[] data) { \Mv8pU  
int[] stack=new int[MAX_STACK_SIZE]; ;n*N9-|.  
O/IW.t  
int top=-1; qO<'_7TN[  
int pivot; xy% lp{  
int pivotIndex,l,r; =#i#IF42?  
j${:Y$VmE  
stack[++top]=0; UC^Bn1  
stack[++top]=data.length-1; W"rX$D [Le  
AcN~Q/xU  
while(top>0){  {Y9m;b,X  
int j=stack[top--]; c 25wm\\  
int i=stack[top--]; xw5E!]~D  
vO1P%)  
pivotIndex=(i+j)/2; E5lC'@Dcz  
pivot=data[pivotIndex]; #;RP ?s  
C61KY7iyR  
SortUtil.swap(data,pivotIndex,j); '"5" $)7  
[FKmZzEy  
file://partition  -> -  
l=i-1; gFvFd:"uZ  
r=j; <G59>H5  
do{ a$MMp=p  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ] t|KFk!)  
SortUtil.swap(data,l,r); oy'Q#!  
} $} S5&  
while(l SortUtil.swap(data,l,r); zjh&?G]:G  
SortUtil.swap(data,l,j); '[p~| mX  
3MC| O5R4  
if((l-i)>THRESHOLD){ g S;p::  
stack[++top]=i; u pf7:gk +  
stack[++top]=l-1; {MKq Yl{  
} *g5df[  
if((j-l)>THRESHOLD){ ^sq3@*hCw  
stack[++top]=l+1; Kg>+5~+E?q  
stack[++top]=j; E~zLhJTUL'  
} IPcAE!h6zN  
k 6~k  
} :&`Yz   
file://new InsertSort().sort(data); q<}5KY  
insertSort(data); ^Y xqJy  
} ?Z] }G  
/** \1RQ),5 %]  
* @param data cW),Y|8  
*/  !+IxPn  
private void insertSort(int[] data) { U<eVLfSij  
int temp; Y[;Pl$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +I2P{7  
} pM\)f  
} B4&@PX"'>,  
} r{kV*^\E  
tqrvcnQr^  
} T}P| uP  
,u( g#T  
归并排序: N7Z&_$Bx  
[*?P2.bf  
package org.rut.util.algorithm.support; #l-,2C~  
6.~(oepu  
import org.rut.util.algorithm.SortUtil; P]+^^ U  
Tp<=dH%$%"  
/** ]k{cPK  
* @author treeroot ZzI^*Nyg  
* @since 2006-2-2 M!=v"C#  
* @version 1.0 quf,Z K5  
*/ l~&efAJ-$  
public class MergeSort implements SortUtil.Sort{ `R8~H7{I6  
~MO'%'@  
/* (non-Javadoc) 9XS+W w7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /k1&?e  
*/ m |,ocz  
public void sort(int[] data) { v (<~:]  
int[] temp=new int[data.length]; Np|i Xwl1  
mergeSort(data,temp,0,data.length-1); e\.|d<N?  
} pZGs o  
5cyl:1Ln  
private void mergeSort(int[] data,int[] temp,int l,int r){ .4F(Y_c  
int mid=(l+r)/2; t2+m7*76  
if(l==r) return ; nI.#A  
mergeSort(data,temp,l,mid); rN{&$+"2  
mergeSort(data,temp,mid+1,r); +U+c] Xgt  
for(int i=l;i<=r;i++){ 'y}A3 RqN  
temp=data; _J   
} X\$|oiR  
int i1=l; [ne4lWaE<y  
int i2=mid+1; -.g5|B  
for(int cur=l;cur<=r;cur++){ d2.eDEOsC  
if(i1==mid+1) f]5bAs  
data[cur]=temp[i2++]; ET _}x7  
else if(i2>r) `"(7)T{  
data[cur]=temp[i1++]; fXIeCn  
else if(temp[i1] data[cur]=temp[i1++]; >6ch[W5k@  
else $F G4wA  
data[cur]=temp[i2++]; &.<{c `-  
} :!tQqy2  
} 5 qG7LO.  
X/i8$yqv  
} :n'QN Gj  
|ki#MtCp  
改进后的归并排序: gNLjk4H,S[  
X^9_'T9  
package org.rut.util.algorithm.support; pPh_p @3I  
{(7. X4\x  
import org.rut.util.algorithm.SortUtil; 66)@4 3V  
Os@ofnC  
/** F6Q#{Ufq  
* @author treeroot giaO7Qh~  
* @since 2006-2-2 HE+VanY![  
* @version 1.0 c!Pi)  
*/ p$[*GXR4  
public class ImprovedMergeSort implements SortUtil.Sort { 6/@ cP/  
+-ieaF  
private static final int THRESHOLD = 10; [(ty{  
Di-"y,[  
/* 8CA4gnh  
* (non-Javadoc) #wM0p:<  
* .D4 D!!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $!obpZ~}  
*/ v l{hE~  
public void sort(int[] data) { o{UwUMw5`  
int[] temp=new int[data.length]; 3O#7OL68v  
mergeSort(data,temp,0,data.length-1); [mWo&Ph[-  
} tMyD^jVC  
Jz%&-e3  
private void mergeSort(int[] data, int[] temp, int l, int r) { [.<vISRir  
int i, j, k; zy$hDy0  
int mid = (l + r) / 2; \3)%p('  
if (l == r) A%+~   
return; >t*zY~R.  
if ((mid - l) >= THRESHOLD) 7qW:^2y  
mergeSort(data, temp, l, mid); Sk;IAp#X9  
else msY"Y*4  
insertSort(data, l, mid - l + 1); Vaq=f/  
if ((r - mid) > THRESHOLD) C(,s_Ks  
mergeSort(data, temp, mid + 1, r); um3 M4>K  
else o"n^zG  
insertSort(data, mid + 1, r - mid); 8`u#tl(  
_/E>38G]  
for (i = l; i <= mid; i++) { N.-Ryj&9  
temp = data; $AsM 9D<BE  
} 3\D jV2t  
for (j = 1; j <= r - mid; j++) { #v(+3Hp  
temp[r - j + 1] = data[j + mid]; _|tg#i|Om  
} ' {:(4>&  
int a = temp[l]; `/+7@~[RU  
int b = temp[r]; mH8s'F  
for (i = l, j = r, k = l; k <= r; k++) { &|{K*pNa  
if (a < b) {  6f1;4Jfp  
data[k] = temp[i++]; *ZaK+ B  
a = temp; g_n=vO('X  
} else { OvK_CN{  
data[k] = temp[j--]; C|!E' 8Rw  
b = temp[j]; >Q+EqT  
} |qbJ]v!  
} MQG$J!N  
} *Z/B\nb  
" *Ni/p$I  
/** 9m6w.:S  
* @param data /pb7  
* @param l #Wc)wL-Tg  
* @param i bJBx~  
*/ 3`e1:`Hu  
private void insertSort(int[] data, int start, int len) { IRS^F;)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }qlz^s  
} =e._b 7P  
} R [uo:.  
} |}mBW@ah  
} A>k+ 4|f  
HPpnw] _  
堆排序: K}Z'!+<U  
E-"Jgq\aC  
package org.rut.util.algorithm.support; MESQAsx%  
BC4u,4S  
import org.rut.util.algorithm.SortUtil; a[#4Oq/t$  
f%@Y XGf  
/** t"BpaA^gO  
* @author treeroot ekAGzu  
* @since 2006-2-2 RNt3az  
* @version 1.0 "+XO[WGc  
*/ +ubO-A?  
public class HeapSort implements SortUtil.Sort{ *i$+i  
Wq>j;\3b3  
/* (non-Javadoc) mU\$piei  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r%B5@+{so  
*/ xMuy[)b  
public void sort(int[] data) { ]}5j X^j  
MaxHeap h=new MaxHeap(); }'X}!_9w>  
h.init(data); `$#64UZ>U1  
for(int i=0;i h.remove(); -#Wc@\;  
System.arraycopy(h.queue,1,data,0,data.length); K1+,y1c  
} m=}kGzIY4  
=8J\;h  
private static class MaxHeap{ +b{h*WWdj  
94lmsE  
void init(int[] data){ L$ ON=$q5  
this.queue=new int[data.length+1]; Nv ew^c)x  
for(int i=0;i queue[++size]=data; 6U""TR!   
fixUp(size); qBwqxxTc  
} \+>b W(  
} T[;{AXLeI  
$==hr^H  
private int size=0; hi ]+D= S  
MBwp{ET!p  
private int[] queue; .g|pgFM?  
om/gk4S2  
public int get() { $8eq&_gJ  
return queue[1]; [Q$"+@jw  
} -pjL7/gx  
tx.YW9xD  
public void remove() { ER|5_  
SortUtil.swap(queue,1,size--); *yX_dgC>[  
fixDown(1); $ jn tT(V  
} ,Y5+UzE@  
file://fixdown )1i)I?m  
private void fixDown(int k) { O'mX7rY<<(  
int j; lq9c2xK  
while ((j = k << 1) <= size) { (>Yii_Cd  
if (j < size %26amp;%26amp; queue[j] j++; B}!n6j`  
if (queue[k]>queue[j]) file://不用交换 97&6iTYA  
break; |LjCtm)@+  
SortUtil.swap(queue,j,k); ca`=dwe>  
k = j; --/  .  
} P]x@h  
} O;zW'*c+  
private void fixUp(int k) { T-x`ut7c  
while (k > 1) { qxrOfsh  
int j = k >> 1; P$oa6`%l  
if (queue[j]>queue[k]) ]O\6.>H  
break; L_A|  
SortUtil.swap(queue,j,k); TfxKvol'  
k = j; 3)eeUO+  
} 6Q>w\@lF  
} oJR!0nQ  
?O3 G  
} ~/Ry=8   
+tA rH C]  
} 9wwvh'T&NK  
,onv `  
SortUtil: ~KNxAxyVi  
3&zmy'b*:  
package org.rut.util.algorithm; f2Slsl;  
  C[Fh^  
import org.rut.util.algorithm.support.BubbleSort; zZ wD)p?_g  
import org.rut.util.algorithm.support.HeapSort; CkflEmfe  
import org.rut.util.algorithm.support.ImprovedMergeSort; m7@`POI  
import org.rut.util.algorithm.support.ImprovedQuickSort; kOc'@;_O  
import org.rut.util.algorithm.support.InsertSort; A} "*`y  
import org.rut.util.algorithm.support.MergeSort; < 37vWK1+  
import org.rut.util.algorithm.support.QuickSort; kjmF-\  
import org.rut.util.algorithm.support.SelectionSort; q'@UZ$2  
import org.rut.util.algorithm.support.ShellSort; 9 o18VJR  
lg=[cC2  
/** vSyN_AB?$  
* @author treeroot $C>EnNx  
* @since 2006-2-2 K~E]Fkw!;  
* @version 1.0 Ue\&  
*/ 2V0R|YUt  
public class SortUtil { f[v??^  
public final static int INSERT = 1; jc?Hip'  
public final static int BUBBLE = 2; 4 I~,B[|  
public final static int SELECTION = 3; f9 rToH  
public final static int SHELL = 4; ywdNwNJ  
public final static int QUICK = 5; Y#m0/1-  
public final static int IMPROVED_QUICK = 6; KOxD%bX_  
public final static int MERGE = 7; FStfGN  
public final static int IMPROVED_MERGE = 8; +Q '|->#  
public final static int HEAP = 9; L%<1C \k  
i a|F  
public static void sort(int[] data) { urN&."c  
sort(data, IMPROVED_QUICK); 2<O hO ^  
} ?+!KucTF  
private static String[] name={ `#UTOYx4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N,O[pTwj  
}; [J];  
vxm`[s|QC  
private static Sort[] impl=new Sort[]{ Du{]r[[C  
new InsertSort(), N;w1f"V}  
new BubbleSort(), 8sIGJ|ku   
new SelectionSort(), Gmwn:  
new ShellSort(), 3! +5MsR+  
new QuickSort(), _Nj;Ni2rD  
new ImprovedQuickSort(), 2#&K3v  
new MergeSort(), " c]Mz&z  
new ImprovedMergeSort(), 7}#vANm  
new HeapSort() r`krv-,O$  
}; {P]l{W@li  
olJ9Kfc0  
public static String toString(int algorithm){ $W2g2[+  
return name[algorithm-1]; (&B & V  
} b)V[d8IA  
Gq{v)iN  
public static void sort(int[] data, int algorithm) { s810714  
impl[algorithm-1].sort(data); *= D$  
} IKU -  
dV5 $L e#y  
public static interface Sort { /yOd]N;$  
public void sort(int[] data); Soa.thP  
} -py.Y Z  
toCN{[  
public static void swap(int[] data, int i, int j) { +]__zm/^  
int temp = data; ecF I"g  
data = data[j]; o0/03O  
data[j] = temp; Qh*|mW  
} 15zL,yo  
} mrJQB I+  
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