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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。 Zup?nP2GkT  
插入排序: ^,gKA\Wli  
5+J/Qm8{bb  
package org.rut.util.algorithm.support; A`Nb"N$H13  
4g9VE;Gd  
import org.rut.util.algorithm.SortUtil; 6(=:j"w0  
/** TvR2lP  
* @author treeroot 8wd2\J,]  
* @since 2006-2-2 gS ]'^Sr  
* @version 1.0 dewu@  
*/ # L R[6l  
public class InsertSort implements SortUtil.Sort{ ;.Y`T/eWS  
Qn7e6u@V  
/* (non-Javadoc) h2]Od(^[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ub%q<sE*  
*/ &r_B\j3  
public void sort(int[] data) { ORTM [cL  
int temp; M DpXth7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "%Ak[04'  
}  %JZIg!  
} 1C{~!=6#  
} ~ +Y;jA dU  
$- L)>"  
} s*@.qN  
w;"'l]W  
冒泡排序: f&|SGD*  
5P4 >xv[  
package org.rut.util.algorithm.support; 6pse @x?  
zc"eSy< w$  
import org.rut.util.algorithm.SortUtil; LY MfoXp  
8VnZ@*  
/** UJI1n?~  
* @author treeroot RK0IkRXQd  
* @since 2006-2-2 ,LvJ'N  
* @version 1.0 @`yfft  
*/ C-7.Sa  
public class BubbleSort implements SortUtil.Sort{ 9}-,dgAB  
+qdK]RR}  
/* (non-Javadoc) j:#[voo7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uIu0"pv`x  
*/ @`{UiTN X`  
public void sort(int[] data) { >jcNo3S  
int temp; wJ}8y4O!N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @S}'_g  
if(data[j] SortUtil.swap(data,j,j-1); S=Zjdbd  
} O_033&  
} V2*b f`/V  
} .Qaqkb-Ty  
} 7@`(DU`z  
^t*BWJxPC  
} %$08*bAtB7  
b4Z#]o  
选择排序: BB-`=X~:m  
Qk6FK]buV  
package org.rut.util.algorithm.support; x>Kem$z  
~I'h iV^-  
import org.rut.util.algorithm.SortUtil; D_{J:Hb  
`CV a`%  
/** C1_NGOvT  
* @author treeroot QwiC2}/  
* @since 2006-2-2 h OV+}P6  
* @version 1.0 #Jn_"cCRLx  
*/ ' ySWf,Q^  
public class SelectionSort implements SortUtil.Sort { 6Z3v]X  
,J[sg7v cv  
/* L6FUC6x"  
* (non-Javadoc) r8qee$^M  
*  QS!b]a3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6^ ~& sA  
*/ 0-@waK  
public void sort(int[] data) { Z^sO`C  
int temp; 3 . @W.GG8  
for (int i = 0; i < data.length; i++) { UuN(+&oD-  
int lowIndex = i; umi#Se3&  
for (int j = data.length - 1; j > i; j--) { <J- aq;p  
if (data[j] < data[lowIndex]) { 9QpKB c  
lowIndex = j; Qt k'^Fc  
} L%"&_v#a^  
} ?p5Eo{B  
SortUtil.swap(data,i,lowIndex); 2oN lQiE_  
} Yd@9P 2C  
} i"-j:b:c<  
-Iq#h)Q*  
} twJck~l~n  
Ys\l[$_`*  
Shell排序: } nQHP4'  
%K zURv  
package org.rut.util.algorithm.support; 5K8\hoW{  
Si;e_a  
import org.rut.util.algorithm.SortUtil; $T1c{T6n}  
#pf}q+A  
/** hM;EUWv  
* @author treeroot 0j3j/={|.1  
* @since 2006-2-2 NoMEe<  
* @version 1.0 S"lcePN  
*/ f6DPah#  
public class ShellSort implements SortUtil.Sort{ ioZ2J"s  
1 @/+ c  
/* (non-Javadoc) }JI5,d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LnBkd:>}  
*/ 4kx#=MLt  
public void sort(int[] data) { 1j}o. 0\  
for(int i=data.length/2;i>2;i/=2){ <Wl! Qog'  
for(int j=0;j insertSort(data,j,i); 1[!Idl?m  
} Y yI|^f8C  
} /6>2,S8Ar  
insertSort(data,0,1); pPh$Jvo]  
} KxY|:-"Tt  
`P'{HT  
/**  ?9AByg  
* @param data Y#uf 2>J  
* @param j *rA!`e*  
* @param i sO6+L #!  
*/ 4p F%G  
private void insertSort(int[] data, int start, int inc) { 7bTs+C_;7  
int temp; iXBc ~S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O^LzS&I*  
} 'A4Lr  
} \&SP7~-eq  
} KBXdr52"  
!Qn:PSk  
} Xc'yz 2B  
 Q}G   
快速排序: b+hZ<U/  
:V`q;g  
package org.rut.util.algorithm.support; w^dB1Y7c(W  
x *(pr5k  
import org.rut.util.algorithm.SortUtil; z]tvy).  
K2NnA  
/** IUwY/R9Q  
* @author treeroot lO<Ujb#"R  
* @since 2006-2-2 :I1bGa&I  
* @version 1.0 w)hJ0k  
*/ j'~xe3j  
public class QuickSort implements SortUtil.Sort{ ^5xY&1j  
P[^!Uq[0n7  
/* (non-Javadoc) N@*v'MEko%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7kleBDDT  
*/ 1&wLNZXH  
public void sort(int[] data) { ;IwC`!(#  
quickSort(data,0,data.length-1); ='>k|s:  
} +i{&"o4}  
private void quickSort(int[] data,int i,int j){ }Vg &9HY  
int pivotIndex=(i+j)/2; cJL>,Z<|%  
file://swap @aI`ru+a  
SortUtil.swap(data,pivotIndex,j); \\BblzGMR  
aMT&}3  
int k=partition(data,i-1,j,data[j]); 9Lv`3J^~  
SortUtil.swap(data,k,j); 7 pp[kv;!G  
if((k-i)>1) quickSort(data,i,k-1); b5KX`r  
if((j-k)>1) quickSort(data,k+1,j); *pj&^W?  
@eR>?.:&  
} AuSL?kZ4|Y  
/** *|MPYxJ<  
* @param data H!HkXm"  
* @param i tXwnK[~x  
* @param j 4_)@Nq  
* @return jwGd*8 /  
*/ Gh|q[s*k  
private int partition(int[] data, int l, int r,int pivot) { "c=\?   
do{ !i0:1{.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Xq,{)G%9nM  
SortUtil.swap(data,l,r); J/WPffqD  
} jg' 'T1)  
while(l SortUtil.swap(data,l,r); 0lY.z$V  
return l; b1E>LrL  
} "rBo?%:  
!y `wAm>n  
} ,C!MHn^$  
a'W-&j  
改进后的快速排序: &U!@l)<  
C {gYrz)  
package org.rut.util.algorithm.support; #*XuU8q?  
8+Oyhd*|  
import org.rut.util.algorithm.SortUtil; r>A, 7{  
 KGFmC[  
/** >4b-NS/}0  
* @author treeroot V(w2k^7) F  
* @since 2006-2-2 xLX:>64'o>  
* @version 1.0 |-=^5q5  
*/ dKi+~m'w  
public class ImprovedQuickSort implements SortUtil.Sort { HS>Z6|uLY  
2wpLP^9Vr<  
private static int MAX_STACK_SIZE=4096; vaS/WEY  
private static int THRESHOLD=10; J_<ENs-  
/* (non-Javadoc) Tgc)'8A;BN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cT-XF  
*/ c2-NXSjsW  
public void sort(int[] data) { gVEW*8  
int[] stack=new int[MAX_STACK_SIZE]; Gd%KBb  
9!}&&]Q`  
int top=-1; >Y!5c 2~`;  
int pivot; ]FL=E3U  
int pivotIndex,l,r; 3I@j=:(%Y  
h1q?kA  
stack[++top]=0; +)dQd T0Fq  
stack[++top]=data.length-1; 2:Zb'Mj  
rK9X68)  
while(top>0){ IEmtt^C  
int j=stack[top--]; ":tQYo]d  
int i=stack[top--]; wk' |gI[W  
mtvfG  
pivotIndex=(i+j)/2; uR"(0_  
pivot=data[pivotIndex]; UW8 8JA0  
H3nx8R$j](  
SortUtil.swap(data,pivotIndex,j); VMe~aUd  
IJhJfr0)Oo  
file://partition E}00y%@*J  
l=i-1; cL?FloPc*  
r=j; M\ B A+  
do{ j:0(=H!#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~L<q9B( @  
SortUtil.swap(data,l,r); !:'%'@uc  
} z|x0s0q?  
while(l SortUtil.swap(data,l,r); Gn>#Mvq  
SortUtil.swap(data,l,j); pA&CBXio  
6p=AzojoB  
if((l-i)>THRESHOLD){ p;,Cvw{.;%  
stack[++top]=i; Zx@/5!_n.  
stack[++top]=l-1; MDM/~Qpj_  
} :U$<h  
if((j-l)>THRESHOLD){ Lp`q[Z*  
stack[++top]=l+1; hB]4Tn5H  
stack[++top]=j; b%z4u0  
} )#%k/4(Y  
Ml@,xJ/aia  
} {=pRU_-^  
file://new InsertSort().sort(data); _e E(P1  
insertSort(data); xxpvVb)mF  
} %3M1zZY  
/** H.3+5 po  
* @param data A'^y+42jY  
*/ &!x!j ,nT  
private void insertSort(int[] data) { *fQ$s  
int temp; IV]s!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EZ15  
} 5|._K(M  
} f5.rzrU  
} 60ccQ7=  
#T &z`  
} qv>?xKSm  
wxYB-Wh<  
归并排序: 6nRXRO  
j-e/nZR@  
package org.rut.util.algorithm.support; |j3mI\ANF  
aY&He~  
import org.rut.util.algorithm.SortUtil; @8a1a3_F  
|1iCt1~U  
/** v!{mpF  
* @author treeroot ?fr -5&,  
* @since 2006-2-2 @Fv"j9j-3G  
* @version 1.0 yhhW4rz  
*/ =B-a]?lM  
public class MergeSort implements SortUtil.Sort{ yqi=9NB  
~<!b}Hv  
/* (non-Javadoc) 5Arx"=c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \3a(8Em  
*/ 'mx_]b^O  
public void sort(int[] data) { U{6i5;F#H  
int[] temp=new int[data.length]; Vj(}'h-c\  
mergeSort(data,temp,0,data.length-1); t6V@00M@  
} k`[ L  
u2%/</]h  
private void mergeSort(int[] data,int[] temp,int l,int r){ MY1s  
int mid=(l+r)/2; XaOq&7  
if(l==r) return ; ig(dGKD\=9  
mergeSort(data,temp,l,mid); /G[; kR"  
mergeSort(data,temp,mid+1,r); cK6M8:KW  
for(int i=l;i<=r;i++){ ZU\TA|  
temp=data; mVUDPMyZ  
} VbQ9o  
int i1=l; }g6:9%ZMu  
int i2=mid+1; A& u"NgJ  
for(int cur=l;cur<=r;cur++){ CvDy;'{y1  
if(i1==mid+1) `3GC}u>}  
data[cur]=temp[i2++]; aMI\gCB/  
else if(i2>r) *E lR  
data[cur]=temp[i1++]; .b'hVOs{  
else if(temp[i1] data[cur]=temp[i1++]; #Q320}]{  
else DWT4D)C,U  
data[cur]=temp[i2++]; lW}"6@0,  
} 2O}UVp>  
} $C@v  
1xAZ0X#  
} *tkbC2D  
PO9<g% qTf  
改进后的归并排序: c@iP^;D  
^,F8 ha  
package org.rut.util.algorithm.support; AWSe!\b  
E{_$C!.  
import org.rut.util.algorithm.SortUtil; &aD ]_+b  
3%c{eZxG=  
/** 9nIBs{`/Ac  
* @author treeroot Q(Uj5aX  
* @since 2006-2-2 BfQRw>dZ"{  
* @version 1.0 Q?]307g7  
*/ :{2exu  
public class ImprovedMergeSort implements SortUtil.Sort { bj)dYj f  
tS!|#h-J  
private static final int THRESHOLD = 10; RDX".'`(=  
 O+D"7  
/* ^}nz^+R  
* (non-Javadoc) ra#s!m1  
* P5{|U"Y_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~b L^&o(W  
*/ *oR`l32O0z  
public void sort(int[] data) { 'uAH, .B  
int[] temp=new int[data.length]; i&KD)&9b#  
mergeSort(data,temp,0,data.length-1); z=q   
} qgTN %%"~  
D4jf%7X!Lu  
private void mergeSort(int[] data, int[] temp, int l, int r) { 38(Cj~u=3  
int i, j, k; 0>PO4WFVJ  
int mid = (l + r) / 2; &Z Ja}5k!r  
if (l == r) ?Uz7($}  
return; 'J*)o<%  
if ((mid - l) >= THRESHOLD) QvB]?D#h  
mergeSort(data, temp, l, mid); tTa" JXG  
else ,1>ABz  
insertSort(data, l, mid - l + 1); X[pk9mha  
if ((r - mid) > THRESHOLD) qSj$0Hq5XI  
mergeSort(data, temp, mid + 1, r); p_z_d6?  
else ZUE?19GA  
insertSort(data, mid + 1, r - mid); l+$ e|F  
$'M:H_T  
for (i = l; i <= mid; i++) { .^]=h#[e  
temp = data; >C|/%$kk:f  
} WHh=ht s\  
for (j = 1; j <= r - mid; j++) { +;nADl+Q  
temp[r - j + 1] = data[j + mid]; n|,kL!++.  
} cZn B 2T?  
int a = temp[l]; `a.1Af;L  
int b = temp[r]; ~i&Lc7Xl  
for (i = l, j = r, k = l; k <= r; k++) { E2f9J{ Ki=  
if (a < b) { ?<@yo&)  
data[k] = temp[i++]; bY6y)l  
a = temp; 5~WMb6/  
} else { Q{9#Am^6w  
data[k] = temp[j--]; S].=gR0:  
b = temp[j]; K%TlBK V  
} i,G )kt'H  
} &W1{o&  
} 9p,<<5{  
 %trtP  
/** TRQX#))B  
* @param data  lZ^UAFF  
* @param l Rb_HD  
* @param i Epm'u[wV  
*/ ;jb+x5t  
private void insertSort(int[] data, int start, int len) { 'IrwlS  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lW F=bz0  
} gHS;RF9  
} I<Vh Eo,  
} -QaS/WO_  
} y@!kp*0  
0q_Ol]<V  
堆排序: zw=as9z1-  
muSQFIvt  
package org.rut.util.algorithm.support; R!7emc0T  
wg?:jK  
import org.rut.util.algorithm.SortUtil; V+A1O k )  
A]nDI:pO|  
/** , O=@I  
* @author treeroot mUi|vq)`=D  
* @since 2006-2-2 ]# hT!VOd  
* @version 1.0 h[c HCVM:  
*/ = Mc]FCV  
public class HeapSort implements SortUtil.Sort{ V%~u8b  
f#xqu +)Z  
/* (non-Javadoc) F*WW v&\X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qcxq-HS2'  
*/ |q$br-0+  
public void sort(int[] data) { _"`wUMee  
MaxHeap h=new MaxHeap(); 54 8w v  
h.init(data); HaeF`gI^Ee  
for(int i=0;i h.remove(); >c~~i-=  
System.arraycopy(h.queue,1,data,0,data.length); p-U'5<n  
} Xg#g`m%(M  
~mUP!f  
private static class MaxHeap{ |L{<=NNs:D  
GXaCH))TO  
void init(int[] data){ B^(0>Da\  
this.queue=new int[data.length+1]; D]+tr%  
for(int i=0;i queue[++size]=data; Py(l+Ik`>  
fixUp(size); ;D_6u(IC4:  
} m{gK<T  
} 8a{FxCBw  
o{\@7'G  
private int size=0; `nM Huv  
[!>2[bbl  
private int[] queue; Rs;,_  
?Mp)F2'  
public int get() { Q!>8E4Z  
return queue[1]; tq9t(0EL  
} [|~X~AO%  
Py 8o8*H  
public void remove() { n }lav  
SortUtil.swap(queue,1,size--); vO" $Xw  
fixDown(1); {m}B=u  
} ih1s`CjG  
file://fixdown [_j.pMH/P  
private void fixDown(int k) { FE1dr_i  
int j; <PkDfMx2  
while ((j = k << 1) <= size) { )_EQU8D4ug  
if (j < size %26amp;%26amp; queue[j] j++; 1p,G8v+B  
if (queue[k]>queue[j]) file://不用交换 |::kC3=  
break; (CY VSO  
SortUtil.swap(queue,j,k); 6m21Y8N  
k = j; lfR"22t  
} ?7:"D e  
} hMw}[6m  
private void fixUp(int k) { nZQZ!Vfj  
while (k > 1) { $i@5'[jA  
int j = k >> 1; ?|^1-5l3  
if (queue[j]>queue[k]) ;D]TPBE  
break; (JFa  
SortUtil.swap(queue,j,k); =_cWCl^5  
k = j; Pw /wAUt  
} iZ[o2Tre  
} ,%d n)gt7  
;BoeE3* 6  
} e,I-u'mLQs  
M:?eK [h  
} M 0->  
?MeP<5\A  
SortUtil: _}Jz_RS2`  
Yl1@ gw7  
package org.rut.util.algorithm; Fw:s3ON9}  
Y_PCL9G{p  
import org.rut.util.algorithm.support.BubbleSort; gzzPPd,hd  
import org.rut.util.algorithm.support.HeapSort; n<yV]i$  
import org.rut.util.algorithm.support.ImprovedMergeSort; &nPv%P,e  
import org.rut.util.algorithm.support.ImprovedQuickSort; =KT7ZSTV  
import org.rut.util.algorithm.support.InsertSort; r3Z-mJ$:  
import org.rut.util.algorithm.support.MergeSort; :[(X!eP  
import org.rut.util.algorithm.support.QuickSort; )2F:l0g  
import org.rut.util.algorithm.support.SelectionSort; k` (_~/#  
import org.rut.util.algorithm.support.ShellSort; c<JJuG  
ycw'>W3.*  
/** Re<X~j5]  
* @author treeroot @R}L 4  
* @since 2006-2-2 Q+G=f  
* @version 1.0 7"4|`y^#  
*/ iO#H_&L.p  
public class SortUtil { "_'9KBd!  
public final static int INSERT = 1; @oYq.baHX  
public final static int BUBBLE = 2; n2 ,b~S\e  
public final static int SELECTION = 3; L6$,<}l  
public final static int SHELL = 4; 1Sz5&jz  
public final static int QUICK = 5; >!? f6 {\|  
public final static int IMPROVED_QUICK = 6; P9`i6H'~  
public final static int MERGE = 7; ~`tc|Zu  
public final static int IMPROVED_MERGE = 8; k1-?2kf"{  
public final static int HEAP = 9; ?\hXJih  
B5B'H3@  
public static void sort(int[] data) { oF V9t{~j  
sort(data, IMPROVED_QUICK); [W{`L_"  
} x+yt| &B  
private static String[] name={ Q'~;RE%T  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "@` mPe/  
}; ,\}V.:THF  
;5y4v  
private static Sort[] impl=new Sort[]{ "cJ5Fd:*  
new InsertSort(), Vzbl* Zmx  
new BubbleSort(), `p1`Sxz?  
new SelectionSort(), J+DuQ;k;  
new ShellSort(), LZ&CGV"Z-  
new QuickSort(), #3u8BLy$Q  
new ImprovedQuickSort(), =K8`[iH  
new MergeSort(), Q1eiU Y6  
new ImprovedMergeSort(), |7%$+g  
new HeapSort() Y!&dj95y  
}; >47,Hq:2  
uX}M0W  
public static String toString(int algorithm){ by6E "7%  
return name[algorithm-1]; `5e#9@/e  
} NqqLRgMOR'  
z8z U3?  
public static void sort(int[] data, int algorithm) { wm2Q(l*HH  
impl[algorithm-1].sort(data); uc7np]Z  
} 5W<BEcV\  
zKV {JUpG  
public static interface Sort { =t)eT0  
public void sort(int[] data);  5Y9 j/wA  
} !2&h=;i~V  
k7y!! AV  
public static void swap(int[] data, int i, int j) { s?%1/&.~  
int temp = data; YVW!u6W'[6  
data = data[j]; T/ S-}|fhQ  
data[j] = temp; ,u]kZ]  
} L**!$k"{5  
} I[t)V*L9  
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