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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。 ?vA)F)MS   
插入排序: U.XvS''E  
TA2HAMx)  
package org.rut.util.algorithm.support; P{T\zT  
%"<|u)E  
import org.rut.util.algorithm.SortUtil; ;Dh\2! sr  
/** .AB n$ml]  
* @author treeroot Whoqs_Mm{  
* @since 2006-2-2 rcq^mPdQ  
* @version 1.0 MP/@Mf\<E  
*/ '=s{9lxn^  
public class InsertSort implements SortUtil.Sort{ 9Hu;CKs  
^pB}eh.@U  
/* (non-Javadoc) C ~e&J&zh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D.[h`Hkc  
*/ n>t&l8g%g  
public void sort(int[] data) { <x!q! ;  
int temp; { ^J/S}L]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s=S9y7i(R  
} <bSG|VqnH  
} >m$jJlAv8  
} _h6j, )  
!+UU[uM  
} K20,aWBq;3  
R"wBDWs  
冒泡排序: UC e{V]T  
LoUHStt  
package org.rut.util.algorithm.support; }4uHT.)  
/b1+ ^|_  
import org.rut.util.algorithm.SortUtil; %fT%,( w}t  
h6CAd-\x\  
/** uI9eUO  
* @author treeroot kk`K)PESi  
* @since 2006-2-2 k!Ym<RD%N  
* @version 1.0 aM7e?.rU  
*/ ]Cc3}+(s  
public class BubbleSort implements SortUtil.Sort{ d/8p?Km  
(jyT9'*wAT  
/* (non-Javadoc) _2-fH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R7o'V* d  
*/ FNN7[ku!  
public void sort(int[] data) { QkFB \v  
int temp; v~*Co}0OB  
for(int i=0;i for(int j=data.length-1;j>i;j--){ exZgk2[0  
if(data[j] SortUtil.swap(data,j,j-1); 3 <A?  
} a1>Tz  
} I[6ft_*  
} ptc.JB6  
} #0"Pd8@  
lC=-1*WH  
} &ggOm  
s/l>P~3=  
选择排序: <.Dg3RH  
zv-9z  
package org.rut.util.algorithm.support; *| 9:  
Z=m5V(9  
import org.rut.util.algorithm.SortUtil; %ws@t"aER  
_,<@II  
/** /HE{8b7n3F  
* @author treeroot c(kYCVc   
* @since 2006-2-2 w)XnMyD(P  
* @version 1.0 N!//m?}  
*/ aI\:7  
public class SelectionSort implements SortUtil.Sort { Ihd{tmr<  
6J]8BHJn+  
/* y&W3CW\:  
* (non-Javadoc) G@3Jw[t  
* &R))c|>OT&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -l~+cI\2  
*/ NI:3hfs  
public void sort(int[] data) { V}MRdt7  
int temp; K8JshF Ie  
for (int i = 0; i < data.length; i++) { "$nff=]  
int lowIndex = i; 1{<r~  
for (int j = data.length - 1; j > i; j--) { r h c&#JS  
if (data[j] < data[lowIndex]) { #Y0ru9  
lowIndex = j; <c&Nm_)  
} q`|rS6  
} 1d!TU=*  
SortUtil.swap(data,i,lowIndex); d}2(G2z^  
} <2e[;$  
} [;Jq=G8&t  
Ie[DTy  
} -cWGF  
b(Yxsy{U  
Shell排序: }Oq P`B  
'A,)PZL9i  
package org.rut.util.algorithm.support; HPX JRQBE  
A!v:W6yiz  
import org.rut.util.algorithm.SortUtil; cAn_:^  
G+t=+T2m  
/**  (F&o!W  
* @author treeroot y7Nd3\v [\  
* @since 2006-2-2 N<O<wtXIj  
* @version 1.0 '?$R YU,  
*/ y"|gC!V}  
public class ShellSort implements SortUtil.Sort{ A`* l+M^z  
`PT'Lakf;3  
/* (non-Javadoc) nwVW'M]r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aP]h03sS  
*/ l(HxZlHr  
public void sort(int[] data) { Y[s}?Xu]w#  
for(int i=data.length/2;i>2;i/=2){ 3a'#Z4Z-  
for(int j=0;j insertSort(data,j,i); ovZ!}  
} !j& #R%D  
} nZ (wfNk  
insertSort(data,0,1); CQ^(/B^c  
} x(R;xB  
f?ibyoXL  
/** 8oXp8CC  
* @param data qswC> Gi  
* @param j z@pa;_  
* @param i j3T)gFP  
*/ 2FV@ ?x0po  
private void insertSort(int[] data, int start, int inc) { ZGsd cnz  
int temp; o0S 8ki  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %*wEzvt *  
} HW,v"  
} x?0K'  
} ;134$7!Y  
:FtV~^Z  
} ;aX?K/  
@TX@78fWz=  
快速排序: )*{B_[  
Sy4|JM-5  
package org.rut.util.algorithm.support; #s15AyKz5  
3 H5  
import org.rut.util.algorithm.SortUtil; _)!*,\*`{  
QjG/H0*mP  
/** D %)L "5C  
* @author treeroot ~{5v a  
* @since 2006-2-2 nvXjW@)`  
* @version 1.0 .=t:Uy  
*/ {;& U5<NO  
public class QuickSort implements SortUtil.Sort{ Y~A I2HS  
Az8ZA~Op=  
/* (non-Javadoc) QV:> x#=V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SE@TY32T  
*/ OdY9g2y#m  
public void sort(int[] data) { 3o/f, }_  
quickSort(data,0,data.length-1); R){O]<+  
} 8>6<GdGL<n  
private void quickSort(int[] data,int i,int j){ "kBVHy  
int pivotIndex=(i+j)/2; ID! S}D  
file://swap <)T~_s  
SortUtil.swap(data,pivotIndex,j); _@[W[= |H  
6 R})KIG  
int k=partition(data,i-1,j,data[j]); J5HK1  
SortUtil.swap(data,k,j); !6RDq`  
if((k-i)>1) quickSort(data,i,k-1); 3&AJN#c  
if((j-k)>1) quickSort(data,k+1,j); Ba|}$jo  
q*` m%3{  
} qQG? k~r  
/** ~u2f`67{  
* @param data n*na6rV\k  
* @param i q/54=8*h0  
* @param j uL1lB@G@  
* @return K<`Z@f3'w  
*/ l"nS +z  
private int partition(int[] data, int l, int r,int pivot) { 3o?eUwI}  
do{ ' VCuMCV  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .r6x9t  
SortUtil.swap(data,l,r); 1Q? RD%lkf  
} PlLt^q.z[  
while(l SortUtil.swap(data,l,r); 1E&S{.  
return l; \R]2YY`EP  
} L3xN#W;m7  
*.k*JsU~B  
} %X %zK1  
<f8j^  
改进后的快速排序: z |~+0  
~M} K]Li  
package org.rut.util.algorithm.support; LPu *Lkx  
(PGw{_  
import org.rut.util.algorithm.SortUtil; S2*sh2-&6  
ckY#oRQ1  
/** {j]cL !Od  
* @author treeroot 43M.Hj]  
* @since 2006-2-2 @P75f5p}<  
* @version 1.0  HB'9&  
*/ -aok]w m  
public class ImprovedQuickSort implements SortUtil.Sort { 6?KUS}nRS  
zb!1o0, J  
private static int MAX_STACK_SIZE=4096; j7gTVfO  
private static int THRESHOLD=10; >A-{/"p#  
/* (non-Javadoc) un-%p#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ln=fq:  
*/ EC[]L'IL  
public void sort(int[] data) { :adz~L$  
int[] stack=new int[MAX_STACK_SIZE]; OQKg/1  
5  >0\=  
int top=-1; KRT&]2  
int pivot; fd>{ UyU  
int pivotIndex,l,r; -k8sR1(  
=d^hiR!GN  
stack[++top]=0; W&|?8%"l]  
stack[++top]=data.length-1; o^UOkxs.  
sRT H_]c  
while(top>0){ `VO;\s$5j  
int j=stack[top--]; n9={D  
int i=stack[top--]; q@[F|EF=  
*9kg \#  
pivotIndex=(i+j)/2; ZSe30Rl\  
pivot=data[pivotIndex]; X5 or5v  
~i?A!  
SortUtil.swap(data,pivotIndex,j); #\Rxqh7  
SF,:jpt`Z+  
file://partition b5^>QzgD  
l=i-1; {x,)OgK!{  
r=j; 3Q=\W<Wu  
do{ .9B@w+=6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2v4K3O60G  
SortUtil.swap(data,l,r); ^ IuhHP  
} a?r$E.W'&  
while(l SortUtil.swap(data,l,r); r2.w4RMFua  
SortUtil.swap(data,l,j); klFS3G  
sV{\IgH/x  
if((l-i)>THRESHOLD){ "D_:`@V(  
stack[++top]=i; 59l9_yFJ  
stack[++top]=l-1; v :/!OvLe  
} X coPkW  
if((j-l)>THRESHOLD){ 2!B|w8ar  
stack[++top]=l+1; Q}lCQK/g  
stack[++top]=j; P<vU!`x% q  
} @- |G_BZ  
t7x<=rW7u  
} U~7udUR  
file://new InsertSort().sort(data); L@AFt)U  
insertSort(data); J.4U;A5  
} ]9/A=p?J@  
/** 8YlZ({f  
* @param data H OWpTu(  
*/ Fovah4q%V  
private void insertSort(int[] data) { bs)wxU`Q*  
int temp; \l /}` w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *|\bS "  
} bs ~P  
} C@`#@1X  
} Icg-rwa<Z  
b,~pwbHf  
} ^t gjs$M|  
-`\rDPGf  
归并排序: |*g#7 YL  
Y3:HQ0w`|  
package org.rut.util.algorithm.support; ANw1P{9*  
Q?>r:vMi  
import org.rut.util.algorithm.SortUtil; ~s HdOMw  
b=MW;]F  
/** EDgtn)1  
* @author treeroot {*O+vtir%  
* @since 2006-2-2 Bv@p9 ] n  
* @version 1.0 <H60rON  
*/ +CBN[/Z^i  
public class MergeSort implements SortUtil.Sort{ d>)=|  
ZXYyG`3+  
/* (non-Javadoc) T=42]h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SQf[1}$ .  
*/  d6tLC Q  
public void sort(int[] data) { i:jXh9+  
int[] temp=new int[data.length]; "*X\'LPs=  
mergeSort(data,temp,0,data.length-1); g{}<ptx]  
} 8el6z2  
E<3xv;v8r  
private void mergeSort(int[] data,int[] temp,int l,int r){ `0]N#G T  
int mid=(l+r)/2; GZrN,M  
if(l==r) return ; hfY/)-60o  
mergeSort(data,temp,l,mid); Fn`Zw:vp6  
mergeSort(data,temp,mid+1,r); h]&  
for(int i=l;i<=r;i++){ Qv ~@  
temp=data; -9{N7H  
} /fT"WaTEK  
int i1=l; M]{~T7n-  
int i2=mid+1; v0)Y,hW  
for(int cur=l;cur<=r;cur++){ QlMLWi  
if(i1==mid+1) iU 6,B  
data[cur]=temp[i2++]; &&C70+_po  
else if(i2>r) G^dp9A  
data[cur]=temp[i1++]; Ij4q &i"  
else if(temp[i1] data[cur]=temp[i1++]; Posz|u<x  
else J  Y8Rk=  
data[cur]=temp[i2++]; -d4 v:Jab  
} 7 SJ=2  
} 6?M/7 1  
'62_q8:  
} =L#&`s@)_  
tP! %(+V  
改进后的归并排序: 5Q8 H8!^  
+fboTsp% H  
package org.rut.util.algorithm.support; M}11 tUl  
*> nOL  
import org.rut.util.algorithm.SortUtil; bskoi;)u  
p#P<V%  
/** QjSWl,{ $D  
* @author treeroot P<&bAsje  
* @since 2006-2-2 FNLS=4  
* @version 1.0 `O2P&!9&  
*/ yD& Y`f#  
public class ImprovedMergeSort implements SortUtil.Sort { y'^U4# (  
DQW)^j h  
private static final int THRESHOLD = 10; L{jx'[C  
wMCg`rk  
/* BSHS)_xs  
* (non-Javadoc) 3)W_^6>bM  
* HJg&fkHn1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |^5"-3Q  
*/ F5x*#/af  
public void sort(int[] data) { (kY  0<  
int[] temp=new int[data.length]; S"G(_%  
mergeSort(data,temp,0,data.length-1); uQ_C<ii"W  
} s&V sK#  
'q:7PkN!p  
private void mergeSort(int[] data, int[] temp, int l, int r) { kI(3Pf ].  
int i, j, k; yKj}l,i~8  
int mid = (l + r) / 2; +zche  
if (l == r) %eofG]VM<  
return; Yn [ F:Z  
if ((mid - l) >= THRESHOLD) {c3FJ5:  
mergeSort(data, temp, l, mid); /Q7q2Ne^*  
else aG;F=e  
insertSort(data, l, mid - l + 1); H:hM(m0?q  
if ((r - mid) > THRESHOLD) J2x}@p  
mergeSort(data, temp, mid + 1, r); S[$9_Jf  
else B6&[_cht  
insertSort(data, mid + 1, r - mid); ~x9J&*zxM  
1o\2\B=k{  
for (i = l; i <= mid; i++) { Heh&;c  
temp = data; @ntwdv;  
} rz&V.,s  
for (j = 1; j <= r - mid; j++) { iB W:t  
temp[r - j + 1] = data[j + mid]; XZk%5t|t  
} "Ua-7Q&A  
int a = temp[l]; q j21#q .  
int b = temp[r]; Peph..8Z  
for (i = l, j = r, k = l; k <= r; k++) { y>t:flD*  
if (a < b) { &uE )Vr4R  
data[k] = temp[i++]; N`IXSE  
a = temp; ~),%w*L  
} else { /y{fDCC  
data[k] = temp[j--]; ?,riwDI 2  
b = temp[j]; V2?{ebx`  
} yc]_?S>9  
} "4WnDd 5"  
} +pT;; 9  
Jxe5y3* (  
/** #y#TEw,  
* @param data X1P1 $RdkR  
* @param l 4.,|vtp  
* @param i ^kcuRJ0*$  
*/ qk'&:A  
private void insertSort(int[] data, int start, int len) { Y1r'\@L w  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vA:ZR=)F  
} 9A4n8,&sm  
} v `/nX->  
} Jgr;'U$  
} f eB ?  
3C!|!N1Hn  
堆排序: mIG>`7`7N  
um$U3'0e  
package org.rut.util.algorithm.support; |7,$.MK-@  
uZ_?x~V/  
import org.rut.util.algorithm.SortUtil; H74'I}  
<?KgzIq2  
/** cu5}(  
* @author treeroot (T2HUmkQ6  
* @since 2006-2-2 "Y^Fn,c  
* @version 1.0 "dv\ 9O  
*/ MwQtf(_  
public class HeapSort implements SortUtil.Sort{ NMw5ixl  
c %Y *XJ'  
/* (non-Javadoc) @6DKw;Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |b='DJz2  
*/ bt1bTo  
public void sort(int[] data) { L=Aj+  
MaxHeap h=new MaxHeap(); r*mYtS  
h.init(data); 2Q(ZW@0  
for(int i=0;i h.remove(); J_&cI%.  
System.arraycopy(h.queue,1,data,0,data.length); 7ZAxhFC  
} YG*<jKcX  
>#r0k|3J^J  
private static class MaxHeap{ {-7ovH?  
`R (N3  
void init(int[] data){ fl4@5AVY  
this.queue=new int[data.length+1]; a0JMLLa [I  
for(int i=0;i queue[++size]=data; <w~$S0_  
fixUp(size);  7Tr '<(A  
} V+>RF  
} 2<0".5+I  
x%$6l  
private int size=0; =HMCNl  
>(n /  
private int[] queue; R3_;!/1  
|]q{ qsy  
public int get() { V3*@n*"N;  
return queue[1]; LQ Ux}  
} *j,noHUT~>  
N!?~Dgw  
public void remove() { &~.|9P/45  
SortUtil.swap(queue,1,size--); E 8W*^^z(  
fixDown(1); |,n(9Ix  
} ^oDs*F  
file://fixdown 4$2HO `@uN  
private void fixDown(int k) { T^d<vH  
int j;  K\ pZ  
while ((j = k << 1) <= size) { A9Ea}v9:  
if (j < size %26amp;%26amp; queue[j] j++; |iSwG=&  
if (queue[k]>queue[j]) file://不用交换 2XBHo (  
break; BH}rg,]G  
SortUtil.swap(queue,j,k); H 9/m6F  
k = j; 1GR|$E  
} 90J WU$K  
} )knK'H(  
private void fixUp(int k) { ${ .:(z  
while (k > 1) { $i8oLSRV  
int j = k >> 1; It3@ Cd>  
if (queue[j]>queue[k]) d\A7}_r*x  
break; A;/,</  
SortUtil.swap(queue,j,k); =VWH8w.3  
k = j; YyYp-0#  
} 6x!iL\Y~  
}  W>x.*K  
Zn|lL0b{q  
} Wa?\W&  
)!zg=}V  
} )WEOqaR]  
T 9}dgf  
SortUtil: vXdI)Sx[  
A$P Oc<  
package org.rut.util.algorithm; a(-t"OL\  
6]!Jo)BF  
import org.rut.util.algorithm.support.BubbleSort; N-p||u  
import org.rut.util.algorithm.support.HeapSort; 6I]{cm   
import org.rut.util.algorithm.support.ImprovedMergeSort; }ew )QHd  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,*L3  
import org.rut.util.algorithm.support.InsertSort; b83m'`vRM  
import org.rut.util.algorithm.support.MergeSort; h}m9L!+n8  
import org.rut.util.algorithm.support.QuickSort; |U~\;m@  
import org.rut.util.algorithm.support.SelectionSort; &u2m6 r>W  
import org.rut.util.algorithm.support.ShellSort; r5lPO*?Df  
Fkqw #s(T  
/** Aba%QQQ  
* @author treeroot z+_d*\  
* @since 2006-2-2 [w  FK!?  
* @version 1.0 _lH:%E*  
*/ @%MGLR{pH  
public class SortUtil { ~WmA55  
public final static int INSERT = 1; se_Oi$VZ{  
public final static int BUBBLE = 2; n;.);  
public final static int SELECTION = 3; 4Dd]:2|D  
public final static int SHELL = 4; /GNm>NSK  
public final static int QUICK = 5; O+DYh=m*p  
public final static int IMPROVED_QUICK = 6; T!&VT;   
public final static int MERGE = 7; ){tT B  
public final static int IMPROVED_MERGE = 8; `Z@qWB<  
public final static int HEAP = 9; 2tp95E`(O  
; jJ%<  
public static void sort(int[] data) { F'@[ b   
sort(data, IMPROVED_QUICK); y&F&Z3t  
} PC?XE8o  
private static String[] name={ DnB :~&Dw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \VAS<?3  
}; Z7MGBwP(  
sdQ "[`~2R  
private static Sort[] impl=new Sort[]{ *APTgXYR  
new InsertSort(), SQG9m2  
new BubbleSort(), f Lns^  
new SelectionSort(), UtB~joaR  
new ShellSort(), +4]f6Zz({  
new QuickSort(), ir;az{T#U  
new ImprovedQuickSort(), \-Q6z 8  
new MergeSort(), NF*Z<$'%  
new ImprovedMergeSort(), .Ax]SNZ+:A  
new HeapSort() FCt %of#  
}; EHq?yj;  
AHP;N6Y6  
public static String toString(int algorithm){ n--s[Kdo8  
return name[algorithm-1]; [:{HX U7y  
} @PKY>58)  
A9y3B^\*  
public static void sort(int[] data, int algorithm) { F^wm&:%{`  
impl[algorithm-1].sort(data); SivJaY%  
} 0{47TX*YX  
w"h3e  
public static interface Sort { KD..X~Me  
public void sort(int[] data); =|3*Y0  
} M+M\3U  
F*,RDM'M  
public static void swap(int[] data, int i, int j) { sH{(=N  
int temp = data; ]RI+:f  
data = data[j]; T^nOv2@,  
data[j] = temp; S),acc(d  
} /V>yF&p  
} `+T"^{ Z  
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