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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。 .6 NSt  
插入排序: E/ZJ\@gzD  
Q /c WV  
package org.rut.util.algorithm.support; F9\Ot^~  
1Q SIZoK7  
import org.rut.util.algorithm.SortUtil; >!1f`  
/** yk<jlVF$j  
* @author treeroot -ZP&zOsDr  
* @since 2006-2-2 wsrx|n[]  
* @version 1.0 nZCpT |M5  
*/ Y:%)cUxA  
public class InsertSort implements SortUtil.Sort{ ?(q*U!=  
i4n b#  
/* (non-Javadoc) OLNn3 J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?d<:V.1U@  
*/ ]B3FTqR{i  
public void sort(int[] data) { _]UDmn[C  
int temp; cqY.^f.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 82za4u$q#  
} xzl4v=7  
} eCIRt/ uA  
} i?>> 9f@F  
s2?,'es  
} \'+{X(]  
_MbVF>JOx  
冒泡排序: xd fvme[  
l5';?>!s  
package org.rut.util.algorithm.support; CS5jJi"pD3  
~,!hE&LE~  
import org.rut.util.algorithm.SortUtil; f=_?<I{  
G^rh*cb K  
/** 62)lf2$1  
* @author treeroot A Ok7G?Y  
* @since 2006-2-2 ;D"P9b]9$  
* @version 1.0 RA/ =w&  
*/ y- <PsP-I  
public class BubbleSort implements SortUtil.Sort{ {<}I9D5  
"aWX:WL&}s  
/* (non-Javadoc) >9tkx/J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |<3Q+EB^  
*/ _c9 WWp?  
public void sort(int[] data) { *KjVPs  
int temp; :qCm71*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ c+b:K  
if(data[j] SortUtil.swap(data,j,j-1); I "Q9W|J_&  
} s/G5wRl<  
} ?%dCU~ z  
} ;h-G3>Il  
} z<[.MH`ln  
UQ$\ an'  
} RM^?&PM85  
XuFm4DEJ  
选择排序: W -C0 YU1  
7o965h  
package org.rut.util.algorithm.support; hDB`t $  
;H y!0n  
import org.rut.util.algorithm.SortUtil; !QQ<Ai!E  
yo?g"vbE  
/** n^JUZ8  
* @author treeroot ^;)SFmjg%  
* @since 2006-2-2 KtfkE\KP  
* @version 1.0 r\l3_t  
*/ [I++>4  
public class SelectionSort implements SortUtil.Sort { v E3{H  
tv@Z 5  
/* &v3D" J  
* (non-Javadoc)  '{j\0  
* sxN>+v11z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Kw&=u  
*/ U5On-T5  
public void sort(int[] data) { Imh2~rw;  
int temp; uGP[l`f|FQ  
for (int i = 0; i < data.length; i++) { Io,/ +#|  
int lowIndex = i; _o&,  
for (int j = data.length - 1; j > i; j--) { V(lK`dY  
if (data[j] < data[lowIndex]) { Sg CqxFii  
lowIndex = j; vy{rwZ$  
} ;Xfd1    
} VeNNsg>&  
SortUtil.swap(data,i,lowIndex); @H3s2|  
} k\mXo-:V6  
} F1?CqN M  
(opROsFh  
} r+[#%%}ea  
DU/9/ I?~  
Shell排序: :Bx+WW&P.i  
4DQ07w  
package org.rut.util.algorithm.support; ;S=62_ Un  
";-{ ~  
import org.rut.util.algorithm.SortUtil; 27Kc -rcB  
(B>yaM#5  
/** vF.?] u  
* @author treeroot ++Rdv0~  
* @since 2006-2-2 dAYI DE  
* @version 1.0 dp"<KcP_  
*/ {+@ms$z  
public class ShellSort implements SortUtil.Sort{ p<of<YU)  
%gV)arwK  
/* (non-Javadoc) W\I$`gyC/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Q`yNEc  
*/ p/ziFpU  
public void sort(int[] data) { {&\J)oZ  
for(int i=data.length/2;i>2;i/=2){ U7nsMD  
for(int j=0;j insertSort(data,j,i); iN:G/ss4O  
} G]L0eV  
} 652uZ};e  
insertSort(data,0,1); 9l]UE0yTL/  
} %-h7Z3YcN  
]uBT &  
/** QE7+rBa  
* @param data RE ![O  
* @param j 89*S? C1  
* @param i LFE p  
*/ *)j@G:  
private void insertSort(int[] data, int start, int inc) { ]}nu9z<  
int temp; 7^kH8qJ)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #rhVzN-?)W  
} P\D[n-&  
} H "Q(2I  
} Nhjle@J<  
&FL%H;Kfx  
} Z 7`5x  
/'-:=0a  
快速排序: @;||p eU  
,$HHaoo g  
package org.rut.util.algorithm.support; Zr\2BOcc.l  
X tJswxw`K  
import org.rut.util.algorithm.SortUtil; l0gH(28K  
zSEr4^Dk4  
/** bZxv/\  
* @author treeroot /DLr(  
* @since 2006-2-2 L=d$"Q  
* @version 1.0 @; W<dJ<X  
*/ 0w^jls  
public class QuickSort implements SortUtil.Sort{ 929#Q#TT  
0v;ve  
/* (non-Javadoc) 'g. :MQ8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OpYmTep#T\  
*/ ].LJt['%8  
public void sort(int[] data) { gs$3)t  
quickSort(data,0,data.length-1); [Dnusp7e  
} Sq?,C&LsA  
private void quickSort(int[] data,int i,int j){ RwUW;hU  
int pivotIndex=(i+j)/2; |__d 8a  
file://swap fW(;   
SortUtil.swap(data,pivotIndex,j); $B<~0'6}  
k"t >He  
int k=partition(data,i-1,j,data[j]); ;F|jG}M"  
SortUtil.swap(data,k,j); t9ER;.e  
if((k-i)>1) quickSort(data,i,k-1); r Z pbu>S  
if((j-k)>1) quickSort(data,k+1,j); 8a7YHUL<3i  
[70Y,,w  
} EH(tUwY%{  
/** L%f-L.9`u  
* @param data "pYe-_"@  
* @param i '=$TyiU  
* @param j AD(xaQ&T  
* @return &.hoC Po$  
*/ =+`D  
private int partition(int[] data, int l, int r,int pivot) { "@(58nk  
do{ <Uf|PFVj$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ? %93b ,7  
SortUtil.swap(data,l,r); 8:~b &>   
} se!g4XEWD  
while(l SortUtil.swap(data,l,r); FZeP<Ban  
return l; Q^nG0<q+  
} r;9z 5'  
fa"\=V2S  
} CDJ$hu  
OqtQA#uL  
改进后的快速排序: 2,+d|1(4o  
:|=- (z  
package org.rut.util.algorithm.support; v C^>p5F  
-E:(w<];  
import org.rut.util.algorithm.SortUtil; _n7%df  
r-*l1([eW  
/** Trpgx  
* @author treeroot nYhp`!W4;  
* @since 2006-2-2 HXyFj  
* @version 1.0 KA?v.s  
*/ rJX\6{V!_  
public class ImprovedQuickSort implements SortUtil.Sort { Y4`QK+~fH  
_nP)uU$  
private static int MAX_STACK_SIZE=4096; 9+t =|  
private static int THRESHOLD=10; )]3L/  
/* (non-Javadoc) vABXXB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?H<~ac2e  
*/ h+5 @I%WX  
public void sort(int[] data) { Xty# vI  
int[] stack=new int[MAX_STACK_SIZE]; 4AuH1m)<  
(xbIUz.  
int top=-1; CGkI\E  
int pivot; BK*z 4m  
int pivotIndex,l,r; 3hLqAj  
Q4=|@|U0  
stack[++top]=0; &lUNy L  
stack[++top]=data.length-1; dt<~sOT3s  
Rh[Ibm56  
while(top>0){ sSz%V[X WL  
int j=stack[top--]; T30Zk*V  
int i=stack[top--]; M.S s: ttj  
an.`dBm  
pivotIndex=(i+j)/2; I=o'+>az  
pivot=data[pivotIndex]; 9N^+IZ@l  
i_NJ -K  
SortUtil.swap(data,pivotIndex,j); 8!;$qVt  
Ox~ 9_d  
file://partition 5=Suj*s{D#  
l=i-1; BW>5?0E[4(  
r=j; RT/qcS^Oz  
do{ >gnF]<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Qww^P/vm  
SortUtil.swap(data,l,r); LJj=]_  
} mTJ"l(,3  
while(l SortUtil.swap(data,l,r); l=xt;c!  
SortUtil.swap(data,l,j);   Y<aO  
|_, /u_  
if((l-i)>THRESHOLD){ -p]>Be+^x  
stack[++top]=i; VyY.r#@  
stack[++top]=l-1; Qm; BUG]  
} DFc [z"[  
if((j-l)>THRESHOLD){ q1w|'V  
stack[++top]=l+1; iE=P'"I  
stack[++top]=j; +aj^Cs1$  
} St2Q7K5s{  
M%|f+u&  
} Je@kiE  
file://new InsertSort().sort(data); Z(`r-}f I  
insertSort(data); 9T?64t<Ju  
} gB >pd?d  
/** Mi?}S6bp  
* @param data Dkw*Je#6PX  
*/ -bm,:Iy!  
private void insertSort(int[] data) { }PZ=`w*O  
int temp; / gu3@@h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z%e|*GS{  
} O_AGMW/2+  
} nj  
} -X8eabb  
A0>x9XSkJ  
} N+J>7_k   
wVE:X3Ei  
归并排序: o:9$UV[  
i. M2E$b|  
package org.rut.util.algorithm.support; Pin/qp&Fa8  
|xeE3,8  
import org.rut.util.algorithm.SortUtil; a:b^!H>#  
c3#q0Ma  
/** 6c &Y  
* @author treeroot 8lb-}=  
* @since 2006-2-2 4TVwa(cB  
* @version 1.0 /WYh[XKe  
*/ o\goE^,aeR  
public class MergeSort implements SortUtil.Sort{ [O 1|75  
t !~ S9c  
/* (non-Javadoc) u w"*zBxl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F~R7~ZE  
*/ 4| f}F  
public void sort(int[] data) { l;0y-m1  
int[] temp=new int[data.length]; @ae>b  
mergeSort(data,temp,0,data.length-1); zmbZ  
} .[(P  
|[LE9Lq/  
private void mergeSort(int[] data,int[] temp,int l,int r){ =<.F3lo\s  
int mid=(l+r)/2; l#xw.2bo  
if(l==r) return ; Ue!Q."  
mergeSort(data,temp,l,mid); "i%jQL'.  
mergeSort(data,temp,mid+1,r); JJ-i_5\q  
for(int i=l;i<=r;i++){ +>#e=nH  
temp=data; " @)lH  
} :\bfGSD/gd  
int i1=l; >qpqQ; bm  
int i2=mid+1; 8K^f:)Qw  
for(int cur=l;cur<=r;cur++){ ]]/lC  
if(i1==mid+1) iRs V#s  
data[cur]=temp[i2++]; afUTAP@  
else if(i2>r) <\ETPL,<  
data[cur]=temp[i1++]; I.a0[E/,  
else if(temp[i1] data[cur]=temp[i1++]; O9e.=l  
else i| 4_ m  
data[cur]=temp[i2++]; 9wMEvX70  
} GoD ?KC  
} jsZY{s=  
4>k I^  
} :o$@F-$k  
BKZ v9  
改进后的归并排序: -l JYr/MSL  
)!a$#"'  
package org.rut.util.algorithm.support; QnU0"_-  
kwF]TO S  
import org.rut.util.algorithm.SortUtil; Lzz) n%y5  
f~*K {7  
/** +6376$dC  
* @author treeroot T.2ZBG ~|[  
* @since 2006-2-2 `p1DaV  
* @version 1.0 9A+M|;O  
*/ n^Vxi;F  
public class ImprovedMergeSort implements SortUtil.Sort { L=m:/qQL  
o&,Y<$!:VH  
private static final int THRESHOLD = 10; }P. K2ku  
P&\X`ZUA  
/* ^jOCenE 3  
* (non-Javadoc) PY -+Bf  
* 8Z!*[c>K-?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @>:i-5  
*/ VF= Z`  
public void sort(int[] data) { T<M?PlED  
int[] temp=new int[data.length]; <A{y($  
mergeSort(data,temp,0,data.length-1); a[i>;0  
} Y-]YDXrPQ  
>HIt}Zh  
private void mergeSort(int[] data, int[] temp, int l, int r) { J | q^+K  
int i, j, k; @?d?e+B  
int mid = (l + r) / 2; [ro t  
if (l == r) _NT[ ~M_Q  
return; RM#fX^)=  
if ((mid - l) >= THRESHOLD) ^Xa*lR 3  
mergeSort(data, temp, l, mid); ^r4|{  
else 0[i}rC9&  
insertSort(data, l, mid - l + 1); .HCaXFW  
if ((r - mid) > THRESHOLD) fCr\u6Tb  
mergeSort(data, temp, mid + 1, r); A!4VjE>  
else /.2qWQH  
insertSort(data, mid + 1, r - mid); _ .!aBy%xf  
z{' 6f@]  
for (i = l; i <= mid; i++) { b"&E,=L  
temp = data; (Z 8,e  
} shNE~TA  
for (j = 1; j <= r - mid; j++) { kXMP=j8  
temp[r - j + 1] = data[j + mid]; Br&^09S  
} *:[b'D!A  
int a = temp[l]; ,m3":{G:t.  
int b = temp[r]; w#<p^CS  
for (i = l, j = r, k = l; k <= r; k++) { UFIjW[h  
if (a < b) { Bi XTC$Oi  
data[k] = temp[i++]; =R2l3-HA=  
a = temp; ]\`w1'*  
} else { %}ixgs7*c0  
data[k] = temp[j--]; dxntGH< O  
b = temp[j]; S QSA%B$<  
} r*]uR /Z$  
} DUhT>,~]  
} >HX)MwAP  
ivD^HhG  
/** j<@fT ewZ  
* @param data T1bFxim#b  
* @param l G\):2Qz!|  
* @param i l<Lz{)OR  
*/ }|,EU!nDi  
private void insertSort(int[] data, int start, int len) { k5C>_( A  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t%:G|n Sz  
} 4Lw'v:(  
} LjCykk  
} 38"cbHE3  
} mgxz1d  
TRo4I{L6S  
堆排序: C?S~L5a#oC  
n-W?Z'H{r  
package org.rut.util.algorithm.support; RpjSTV8Tkm  
"s${!A)  
import org.rut.util.algorithm.SortUtil; wCC-Y kA  
AsD1-$  
/** _En]@xK3&  
* @author treeroot Ae.]F)w_\  
* @since 2006-2-2 6z PV'~q  
* @version 1.0 W!y)Ho  
*/ V54q"kP,@.  
public class HeapSort implements SortUtil.Sort{ 3JTU^-S<  
A xRl*B  
/* (non-Javadoc) FDl,Ey^r/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O-?z' @5cI  
*/ 3b,=  
public void sort(int[] data) { JtThkh'-"  
MaxHeap h=new MaxHeap(); 6NU8HJp  
h.init(data); e W9)@nVJ  
for(int i=0;i h.remove(); dy'X<o^?W  
System.arraycopy(h.queue,1,data,0,data.length); 1`nc8qC  
} >c&4_?d&,A  
-aC!0O y`  
private static class MaxHeap{ kqQphKkL  
-`,~9y;tx  
void init(int[] data){ kbD*=d}3{  
this.queue=new int[data.length+1]; ,>:XE@xcp  
for(int i=0;i queue[++size]=data; wVlSjk  
fixUp(size); nl.~^CP  
} 0c%@e2(N  
} *;>V2!N=U  
zojuH8  
private int size=0; W dei`u[  
~+7ad$   
private int[] queue; cC7"J\+r*  
]JkpRaP$  
public int get() { h9,wiT  
return queue[1]; G~Sy&XJuq  
} N02zPC 8  
p_D on3  
public void remove() { FSI]k:  
SortUtil.swap(queue,1,size--); a*pXrp@  
fixDown(1); 2&zn^\%"  
} NN31?wt  
file://fixdown n0Qh9*h  
private void fixDown(int k) { Lf$Q %eM0  
int j; p,M3#^ q  
while ((j = k << 1) <= size) { xCDA1y;j  
if (j < size %26amp;%26amp; queue[j] j++; g~bf!  
if (queue[k]>queue[j]) file://不用交换 'LtgA|c=  
break; D2hAlV)i(  
SortUtil.swap(queue,j,k); n"K {uj))  
k = j; c ,g]0S?gu  
} * K0j5dx  
} ?NL&x  
private void fixUp(int k) { [R@q]S/  
while (k > 1) { (ffOu#RQ3  
int j = k >> 1; < -@,  
if (queue[j]>queue[k]) Vq)|gF[6i  
break; ZmYa.4'L  
SortUtil.swap(queue,j,k); -KJ}.q>upq  
k = j; rFt,36#  
} u"Hd55"&  
} )%H5iSNG$P  
a[d{>Fb.  
} : . FfE  
&VZmP5Gv  
} 7DC0W|Fe  
*`QdkVER  
SortUtil: ],fwZd[t  
Fw_bY/WN{  
package org.rut.util.algorithm; 4cVs(`g^  
D x >1y  
import org.rut.util.algorithm.support.BubbleSort; >? A `C!i  
import org.rut.util.algorithm.support.HeapSort; [][:/~q!  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?Uy*6YS  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^8f|clw"  
import org.rut.util.algorithm.support.InsertSort; ; ei<Q =[  
import org.rut.util.algorithm.support.MergeSort; NdXy% Q  
import org.rut.util.algorithm.support.QuickSort; FRJ:ym=E  
import org.rut.util.algorithm.support.SelectionSort; %gne%9nn  
import org.rut.util.algorithm.support.ShellSort; q!9v}R3(  
f@xfb ie !  
/** 2A18hP`^  
* @author treeroot {TxVRpiP{Z  
* @since 2006-2-2 !Sy'Z6%f  
* @version 1.0 BF1O|Q|d6  
*/ v[3hnLN%  
public class SortUtil { +(h6{e%)  
public final static int INSERT = 1; Kj1#R  
public final static int BUBBLE = 2; T0]%(F/8  
public final static int SELECTION = 3; Z+h7 0,|  
public final static int SHELL = 4; @D=2Er\  
public final static int QUICK = 5; E't G5,/m  
public final static int IMPROVED_QUICK = 6; {p lmFV  
public final static int MERGE = 7; (k)gZD9~{?  
public final static int IMPROVED_MERGE = 8; (J;zkb  
public final static int HEAP = 9; fE7a]R EK  
2Ws/0c  
public static void sort(int[] data) { pTV@nP  
sort(data, IMPROVED_QUICK); >-@{vyoOy  
} as\K(c9  
private static String[] name={ .V)2Tz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _%p9 B#X<>  
}; PuoJw~^h  
h C`p<jp/  
private static Sort[] impl=new Sort[]{ 4Uy>#IL  
new InsertSort(), 4[V6so0  
new BubbleSort(), 7J!d3j2TR  
new SelectionSort(), E#X!*q&  
new ShellSort(), t-|=weNy  
new QuickSort(), Vx4pP$S  
new ImprovedQuickSort(), eiSO7cGy  
new MergeSort(), #uw*8&%0  
new ImprovedMergeSort(), A)p! w aG  
new HeapSort() y7G|P~td  
};  E_I6  
+7vh__  
public static String toString(int algorithm){ 90(oV&  
return name[algorithm-1]; AJ1$$c  
} XxU}|jTO#  
{ZYCnS&?CL  
public static void sort(int[] data, int algorithm) { B>nd9Z '  
impl[algorithm-1].sort(data); $bC!T  
} !I+u/f?TO7  
JI; i1@| b  
public static interface Sort { 8lb `   
public void sort(int[] data); 4a-F4j'  
} eOmxA<h  
Vm8_ !$F  
public static void swap(int[] data, int i, int j) { yaGVY*M0  
int temp = data; 3Eux-C!t  
data = data[j]; &aht K}u  
data[j] = temp; %_LHD|<  
} J#;m)5[ a%  
} "@|V.d@  
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