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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。 (c9!:  
插入排序: ^I6GH?19>e  
aKC3v R0  
package org.rut.util.algorithm.support; +zSdP2s  
 ~b LhI  
import org.rut.util.algorithm.SortUtil; `r.  
/** `rI[   
* @author treeroot XnV$}T:?X  
* @since 2006-2-2 3ypf_]<  
* @version 1.0 firiYL"=44  
*/ VseeU;q  
public class InsertSort implements SortUtil.Sort{ s@5r}6?M  
[USE&_RN  
/* (non-Javadoc) u YJL^I8M'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &!O~ f  
*/ !7aJfs2  
public void sort(int[] data) { [Xo}CU  
int temp; F(;C \[Ep  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KVCj06}j  
} gD/% l[  
} &Ch~$Wb^  
} c9R|0Yn^J  
o|7 h  
} #"aL M6Cfs  
LkIbvJCV  
冒泡排序: [5QbE$  
-O?&+xIK&  
package org.rut.util.algorithm.support; J1{ucFa  
>X-*Hu'U#  
import org.rut.util.algorithm.SortUtil; ^ l9NF  
'.d]n(/lZd  
/** ~3s\Q%   
* @author treeroot =hB0p^a  
* @since 2006-2-2 7NDjXcuq  
* @version 1.0 U Zc%XZ`"V  
*/ [49Ae2W`  
public class BubbleSort implements SortUtil.Sort{ .3,6Oo  
\P7y&`|  
/* (non-Javadoc) vP{;'R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gu@Znh-D  
*/ bdkxCt  
public void sort(int[] data) { }uk]1M2=  
int temp; lF.yQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;B@-RfP  
if(data[j] SortUtil.swap(data,j,j-1); ,]|*~dd>G  
} xl;0&/7e  
} c %.vI  
} @m Id{w z  
} MyJG2C#R  
B5fF\N^  
} {>R'IjFc  
D'3. T{*rH  
选择排序: 1# X*kF  
Bwg\_:vq  
package org.rut.util.algorithm.support; Gmp`3  
S K7b]J>  
import org.rut.util.algorithm.SortUtil; w00Ba^W  
*q |3QHZ  
/** C#4/~+  
* @author treeroot caC( KK#<  
* @since 2006-2-2 DX%D8atrr  
* @version 1.0 SHT^Etri  
*/ [p[C45d=<  
public class SelectionSort implements SortUtil.Sort { vQIN#;m4  
LX_{39?<{  
/* KHJk}]K  
* (non-Javadoc) 3Y+ bIz!  
* >*cg K}!@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Frbhh57  
*/ 5D%gDw+"  
public void sort(int[] data) { A%c)=(,  
int temp; m5rJY/  
for (int i = 0; i < data.length; i++) { !_SIq`5]@  
int lowIndex = i; #Bgq]6G2  
for (int j = data.length - 1; j > i; j--) {  _F9O4Q4  
if (data[j] < data[lowIndex]) { .WT^L2l%  
lowIndex = j; kw.IVz<  
} mFXkrvOf,  
} ?\$\YX%/p  
SortUtil.swap(data,i,lowIndex); [.`%]Z(  
} a#G]5T Z  
} Ps_q\R  
S|?Ht61k  
} &b7i> ()  
%1jApCJ  
Shell排序: *.ZU" 5e  
JDy;Jb  
package org.rut.util.algorithm.support; I~.d/!>Z  
b&1-tYV  
import org.rut.util.algorithm.SortUtil; <m3or  
c/\$AJV.H  
/** # \)tz z  
* @author treeroot :[ AP^  
* @since 2006-2-2 u  t4+c0  
* @version 1.0 `[zd  
*/ ]~A<Q{  
public class ShellSort implements SortUtil.Sort{ ?Ok@1  
2?bE2^6  
/* (non-Javadoc) d$(>=gzBQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  {!9i8T  
*/ 5pI=K/-  
public void sort(int[] data) { ST[+k  
for(int i=data.length/2;i>2;i/=2){ \<R.F  
for(int j=0;j insertSort(data,j,i); _cW6H B^j  
} -d8||X[  
} M?fRiOj  
insertSort(data,0,1); HAr_z@#E  
} p/f!\  
b-XC\  
/** XgmblNp1  
* @param data 5Si\hk:o  
* @param j 'o*:~n  
* @param i ,$qqHSd1M  
*/ qm&Z_6Pw  
private void insertSort(int[] data, int start, int inc) { f!"Y"g:@E  
int temp; Ft)Z'&L   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _%$(D"^j  
} Y[yw8a  
} /-W-MP=Wd  
} BLvI[b|3gn  
r\-25F<e5  
} hIr$^%  
r 7mg>3  
快速排序: K{s% h0  
2i@t;h2E  
package org.rut.util.algorithm.support; S"z cSkF  
]$vJK  
import org.rut.util.algorithm.SortUtil; N3`W%ws`~  
2%DleR'i  
/** P6E=*^^m(  
* @author treeroot +L$,jZqS  
* @since 2006-2-2 Kx;DmwX-  
* @version 1.0 OJ'x>kE  
*/ oe5.tkc  
public class QuickSort implements SortUtil.Sort{ (3=(g  
iWN-X (  
/* (non-Javadoc) Q&9%XF uM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K~#wvUb  
*/ p~sfd  
public void sort(int[] data) { OZ$"P<X_"  
quickSort(data,0,data.length-1); I'[hvp  
} z]YP  
private void quickSort(int[] data,int i,int j){ zTa>MzH1-;  
int pivotIndex=(i+j)/2; `>q|_w \e  
file://swap B~u_zZE  
SortUtil.swap(data,pivotIndex,j); s\`Vr;R:|  
|;-,(509  
int k=partition(data,i-1,j,data[j]); _0rHxh7}q  
SortUtil.swap(data,k,j); $VrKoL\ScA  
if((k-i)>1) quickSort(data,i,k-1); 2 8j=q-9Z  
if((j-k)>1) quickSort(data,k+1,j); `37GVo4  
/I' n]  
} ?]=fC{Rh  
/** 9 o7d3ir)  
* @param data #f'(8JjY  
* @param i 3PonF4  
* @param j $J |oVVct  
* @return !7g E  
*/ a* pZcv<  
private int partition(int[] data, int l, int r,int pivot) { e<> Lr  
do{ @J~y_J{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :);]E-ch  
SortUtil.swap(data,l,r); NS l$5E  
} LaE;{jY  
while(l SortUtil.swap(data,l,r); %}=$HwN)  
return l; I~R<}volu  
} sQA{[l!aj  
p 0.?R  
} n(Up?_  
$l&&y?()  
改进后的快速排序: ~?}/L'q!b  
}eX_p6bBw  
package org.rut.util.algorithm.support; X*~NE\  
4M8AYh2)  
import org.rut.util.algorithm.SortUtil; 16\U'<  
wE75HE`gW  
/** /s%I(iP4  
* @author treeroot 1>*]jj}  
* @since 2006-2-2 Gc9^Z=  
* @version 1.0 ~^.&nph  
*/ 6,xoxNoPP3  
public class ImprovedQuickSort implements SortUtil.Sort { NEO~|B*oDU  
`~(C\+gUp  
private static int MAX_STACK_SIZE=4096; x~GV#c  
private static int THRESHOLD=10; s9A'{F  
/* (non-Javadoc) tji,by#E/%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !dLz ?0  
*/ mm=Y(G[_%y  
public void sort(int[] data) { J1<fE(X  
int[] stack=new int[MAX_STACK_SIZE]; JXeqVKF  
1V`]sfRK  
int top=-1; -aNTFt~|[  
int pivot; 9ok|]d P  
int pivotIndex,l,r; x 0  
bIm$7a`T  
stack[++top]=0; EGwY|+3  
stack[++top]=data.length-1; Snt=Hil`  
H/V%D O  
while(top>0){ &Jj> jCg  
int j=stack[top--]; E|9LUPcb  
int i=stack[top--]; +29;T0>a  
Za!c=(5  
pivotIndex=(i+j)/2; DuvP3(K  
pivot=data[pivotIndex]; ud:?~?j&w  
U30)r+&  
SortUtil.swap(data,pivotIndex,j); V8Q#%#)FHe  
5?kA)!|UB  
file://partition 8{+~3@T  
l=i-1; @sKAsn  
r=j; 16N8h]l  
do{ `Ik}Xw  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 73~Mq7~8  
SortUtil.swap(data,l,r); }WGi9\9T&  
} UKK}$B  
while(l SortUtil.swap(data,l,r); M{kPEl&Z  
SortUtil.swap(data,l,j); (P#2Am$  
o33{tUp'  
if((l-i)>THRESHOLD){ ,:\2Lf  
stack[++top]=i; l3MbCBX2  
stack[++top]=l-1; ;(0:6P8I  
} `A <yDy  
if((j-l)>THRESHOLD){ ga^<_;5<  
stack[++top]=l+1; *gz{:}NX  
stack[++top]=j; #>'1oC{  
} \Di~DN1  
pjj 5  
} MF\n@lX  
file://new InsertSort().sort(data); J+*rjdI  
insertSort(data); !CBx$1z  
} Mty]LMK  
/**  (+]k{  
* @param data GPx S.&  
*/ uWnS<O  
private void insertSort(int[] data) { ['km'5uZ^  
int temp; Rg[e~##  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IPxfjBC+J  
} l!AZ$IV  
} g41Lh3dj  
} gy =`cMS@  
.`'SL''c  
} Bhq(bV  
NuO>zAu  
归并排序: <uTsX v  
3X!~*_i C  
package org.rut.util.algorithm.support; hTG d Uw]  
pO+1?c43  
import org.rut.util.algorithm.SortUtil; $g$`fR)  
3+|6])Hi1  
/** #6H<JB  
* @author treeroot pV("NJj!  
* @since 2006-2-2 J#x91Jh  
* @version 1.0 'c$9[|x  
*/ EhFhL4Xdn  
public class MergeSort implements SortUtil.Sort{ l.)N  
~v54$#CB  
/* (non-Javadoc) `f'q/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 78QFaN$  
*/ ?3Jh{F_+  
public void sort(int[] data) { |(P;2q4>  
int[] temp=new int[data.length]; CLkVe  
mergeSort(data,temp,0,data.length-1); Z],"<[E  
} _5m }g!  
PRz oLzr  
private void mergeSort(int[] data,int[] temp,int l,int r){ %xZ.+Ff%  
int mid=(l+r)/2; GO)rpk9  
if(l==r) return ; /MU<)[*Ro  
mergeSort(data,temp,l,mid); H0(zE *c~  
mergeSort(data,temp,mid+1,r); 'j)eqoj  
for(int i=l;i<=r;i++){ D1Sl+NOV  
temp=data; 'j3'n0o  
} P~qVr#eU  
int i1=l;  yY| .  
int i2=mid+1; 3QHZC0AY  
for(int cur=l;cur<=r;cur++){ &V:dcJ^Q  
if(i1==mid+1) ]czy8n$+  
data[cur]=temp[i2++]; /* O,T  
else if(i2>r) ;&!dD6N  
data[cur]=temp[i1++]; #] GM#.  
else if(temp[i1] data[cur]=temp[i1++]; UKJY.W!w4  
else rOD KM-7+  
data[cur]=temp[i2++]; \fKE~61  
} Ur-^X(nL  
} ZkIQ-;wx  
5->PDp  
} OX`n`+^D  
jF;4 8g@^  
改进后的归并排序: OWjZ)f/  
~JNuy"8  
package org.rut.util.algorithm.support; h^0mjdSp,  
$ vjmW! O  
import org.rut.util.algorithm.SortUtil; $~YuS_sYg  
tQ~B!j]  
/** 0 \#Q;Z2  
* @author treeroot % *G)*n  
* @since 2006-2-2 lewDR"0Kx  
* @version 1.0 ( 7?%Hg  
*/ fA8+SaXW%  
public class ImprovedMergeSort implements SortUtil.Sort { Fq9[:  
3-R3Qlr  
private static final int THRESHOLD = 10; 0hkuBQb\  
yn#h$o<  
/* A%PPG+IfA  
* (non-Javadoc) l17ZNDzLU  
* 'JMa2/7CG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $a A.d^  
*/ K(d!0S  
public void sort(int[] data) {  * [5  
int[] temp=new int[data.length]; tAA7  
mergeSort(data,temp,0,data.length-1);  5q ,  
} ]2(c$R  
4PWr;&  
private void mergeSort(int[] data, int[] temp, int l, int r) { -"zu"H~t4  
int i, j, k; 8[C6LG  
int mid = (l + r) / 2; 6b/b} vl  
if (l == r) ':V_V. :  
return; ]1&9~TL  
if ((mid - l) >= THRESHOLD) ~{+{pcO}  
mergeSort(data, temp, l, mid); I5L7BTe  
else #I?iR 3u  
insertSort(data, l, mid - l + 1); n{t',r50  
if ((r - mid) > THRESHOLD) >>$|,Q-.  
mergeSort(data, temp, mid + 1, r); [tzSr=,Cg  
else jEsTw_  
insertSort(data, mid + 1, r - mid); MQ*#oVqv  
D H !Br  
for (i = l; i <= mid; i++) { S |x)7NC  
temp = data; 0'hxw3#  
} OkZ!ZS h  
for (j = 1; j <= r - mid; j++) { psC7I E<v  
temp[r - j + 1] = data[j + mid]; I{zE73  
} yU|ji?)e  
int a = temp[l]; q&E5[/VK:  
int b = temp[r]; fqb$_>3Ol  
for (i = l, j = r, k = l; k <= r; k++) { C.E> )  
if (a < b) { A7C+&I!L  
data[k] = temp[i++]; Fw9``{4w  
a = temp; nEm7&Gb  
} else { :*@|"4  
data[k] = temp[j--]; [bv@qBL  
b = temp[j]; 9@Sb! 9h  
} %20-^&zZ  
} n6 G&^Oj  
} v$G*TR<2  
;n!X% S<z*  
/** F?} *ovy  
* @param data udGGDH  
* @param l f hG2  
* @param i }qv-lO  
*/ XyphQ}\u  
private void insertSort(int[] data, int start, int len) { C[nr>   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ? SP7vQ/  
} 9Nu#&_2R  
} |V\.[F2Fe  
} *'YNRM\}  
} o'7ju~0L  
#L.}CzAz  
堆排序: !2| `aa  
kA<r:/  
package org.rut.util.algorithm.support; ?ev G=S4>  
0juIkN#  
import org.rut.util.algorithm.SortUtil; )m8>w6"  
rp#*uV9;  
/** X&s\_jQ  
* @author treeroot R0mT/h2  
* @since 2006-2-2 &H1D!N  
* @version 1.0 H}V*<mg w  
*/ $Q?G*@y  
public class HeapSort implements SortUtil.Sort{ .eNwC.8i  
s66XdM  
/* (non-Javadoc) ~cBc&u:"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z 034wn\N  
*/ jL+}F/~r  
public void sort(int[] data) { 'uAC oME@  
MaxHeap h=new MaxHeap(); hav?mnVJ  
h.init(data); N#['fg'  
for(int i=0;i h.remove(); +N$7=oGC  
System.arraycopy(h.queue,1,data,0,data.length); /v)!m&6]>  
} l;}7A,u  
xO<-<sRA  
private static class MaxHeap{ qj"syO  
V 1nZ M  
void init(int[] data){ $t# ,'M  
this.queue=new int[data.length+1]; XjZao<?u  
for(int i=0;i queue[++size]=data; BMWeD  
fixUp(size); B"8JFf}"q  
} 11<@++,i  
} L +rySP  
P9i9<pR  
private int size=0; fyq] M_5  
H.8CwsfP  
private int[] queue; 9=~H6(m>  
Gx_`|I{P  
public int get() { x";.gjI |g  
return queue[1]; R^M (fC  
} \1`DaQp7  
n+\Cw`'<H  
public void remove() { 1X"H6j[w  
SortUtil.swap(queue,1,size--); ^ $+f3Z'  
fixDown(1); |@L &yg,x  
} ~q?"w:@;x  
file://fixdown G'?f!fz;  
private void fixDown(int k) { 7cmr *y  
int j; ]7S7CVDk4  
while ((j = k << 1) <= size) { , HI%Xn  
if (j < size %26amp;%26amp; queue[j] j++; ym*#ZE`B!  
if (queue[k]>queue[j]) file://不用交换 Y0X94k.u  
break; W[X!P)=w]  
SortUtil.swap(queue,j,k); 5?{ >9j5  
k = j; 5@>4)dk\  
} *o e0=  
} w4fJ`,  
private void fixUp(int k) { &PBWJ?@O)r  
while (k > 1) { D*T$ v   
int j = k >> 1; wdcryejCkr  
if (queue[j]>queue[k]) h/0-Mrk;e  
break; OZB}aow  
SortUtil.swap(queue,j,k); .A"T086  
k = j; K~y9zF{  
} TaQ "G  
} \LoSUl i  
w HHF=Q  
} QV'3O|  
a[P>SqT4`  
} _ 2gT1B  
jU4)zN/`r  
SortUtil: G9'YgW+$7  
+ersP@G  
package org.rut.util.algorithm; ksOANLRN  
(ln  
import org.rut.util.algorithm.support.BubbleSort; fv j5[Q  
import org.rut.util.algorithm.support.HeapSort; dy6F+V\DG  
import org.rut.util.algorithm.support.ImprovedMergeSort; U8QR*"GmT  
import org.rut.util.algorithm.support.ImprovedQuickSort; M,_^hm7  
import org.rut.util.algorithm.support.InsertSort; -4y)qGb*?  
import org.rut.util.algorithm.support.MergeSort; Qk~0a?#y5  
import org.rut.util.algorithm.support.QuickSort; h*\TCl)  
import org.rut.util.algorithm.support.SelectionSort; ^=izqh5S  
import org.rut.util.algorithm.support.ShellSort; 3<)@ll  
$E`i qRB  
/** Y6f+__O  
* @author treeroot 7<QYT+6xV  
* @since 2006-2-2 HzG~I8o(d  
* @version 1.0 qD$GKN.  
*/ Z\*5:a]  
public class SortUtil { LN~N Fjs  
public final static int INSERT = 1; ??\*D9rCn  
public final static int BUBBLE = 2; iUxDEt[t*  
public final static int SELECTION = 3; fD\^M{5f  
public final static int SHELL = 4; ^aD/ .  
public final static int QUICK = 5; N}}PlGp$  
public final static int IMPROVED_QUICK = 6; *3F /Ft5  
public final static int MERGE = 7; [!:-m61  
public final static int IMPROVED_MERGE = 8; jsqUMy-  
public final static int HEAP = 9; :rTKqX&"j  
NDe[2  
public static void sort(int[] data) { @ yg| OA}  
sort(data, IMPROVED_QUICK); Z}LOy^TL  
} @\6nXf  
private static String[] name={ %7C%`)T]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nv_m!JG7  
}; STXqq[+Rf  
vh. Wm?qQ  
private static Sort[] impl=new Sort[]{ *,pZ fc  
new InsertSort(), `b^#quz  
new BubbleSort(), oA!5dpNhU  
new SelectionSort(), \~z?PA.$  
new ShellSort(), wv7p,9Z[  
new QuickSort(), *@ <8&M9x  
new ImprovedQuickSort(), V`R)#G>IH%  
new MergeSort(), <@U.   
new ImprovedMergeSort(), Pghva*&  
new HeapSort() MAwC\7n+X  
}; 9*-pden l  
M\\e e3Ih  
public static String toString(int algorithm){ "UhK]i*@l  
return name[algorithm-1]; Z0()pT  
} Wk\mgGn+  
`Ct'/h{  
public static void sort(int[] data, int algorithm) { ;<bj{#mMv  
impl[algorithm-1].sort(data); "o^bN 9=  
} .-('C> @  
k7yv>iN  
public static interface Sort { }sTH.%  
public void sort(int[] data); ( E"&UC[  
} u@=+#q~/P  
Q*09 E  
public static void swap(int[] data, int i, int j) { ;1*m} uNz  
int temp = data; =9;[C:p0-  
data = data[j]; XI@6a9Uk  
data[j] = temp; ` x%U  
} P S_3Oq)  
} gtaV6sD  
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