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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。 t[b@P<F  
插入排序: vU,;asgy  
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package org.rut.util.algorithm.support; !jyy`q=  
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import org.rut.util.algorithm.SortUtil; U&SgB[QHO  
/** )VFS&|#\  
* @author treeroot u_X(c'aE;  
* @since 2006-2-2 (c1Kg   
* @version 1.0 I8{ohFFo  
*/ |NXe{q7{  
public class InsertSort implements SortUtil.Sort{ ='\E+*[$I  
.*g^ i`  
/* (non-Javadoc) *|&&3&7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o9AwW  
*/ ~M LBO  
public void sort(int[] data) { x @uowx_&m  
int temp; Hrj@I?4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +"Mlj$O  
} ,ko0XQBl  
} _XUDPC(*qz  
} /7p1y v  
w.R2' W R  
} BZAF;j  
m15> ^i^W  
冒泡排序: wGAeOD  
m$bDWxm#e  
package org.rut.util.algorithm.support; ) >8k8E  
s. jcD  
import org.rut.util.algorithm.SortUtil; m0+'BC{$u  
tY6QhhuS:  
/** 5u&hp  
* @author treeroot "y$s`n4Mj  
* @since 2006-2-2 d m$iiRY  
* @version 1.0 [rtMx8T  
*/ k|[86<&[  
public class BubbleSort implements SortUtil.Sort{ geEETb} +y  
$' >|r]  
/* (non-Javadoc)  Ts 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QeipfK+me  
*/ x$/: %"E  
public void sort(int[] data) { k{w  
int temp; QKtVwsz +  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )SsO,E+t=U  
if(data[j] SortUtil.swap(data,j,j-1); #FsoK*F  
} ,ku3;58O<  
} A!fRpN  
} TrmrA$5f  
} %~^:[@xa*  
~ U`|+ 5  
} 8c0ugM  
<;':'sW  
选择排序: LXx`Vk>ky  
 o C#W  
package org.rut.util.algorithm.support; _Q6` Wp6m  
b<"LUM*;  
import org.rut.util.algorithm.SortUtil; Jqgo\r%`  
5R/k8UZ  
/** (G`O[JF  
* @author treeroot wQw y+S  
* @since 2006-2-2 6V6,m4e  
* @version 1.0 >q)VHV9P  
*/ |!.VpN&  
public class SelectionSort implements SortUtil.Sort { bx=9XZ9g  
zvHeoM ,  
/* /[#5<;  
* (non-Javadoc) D./3,z  
* 2&d|L|->  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P_N i 5s)  
*/ BewJ!,A!  
public void sort(int[] data) { k#pNk7;MZ  
int temp; *-.,QpgTX  
for (int i = 0; i < data.length; i++) { 7) 37AKw  
int lowIndex = i; E.+BqWZ!  
for (int j = data.length - 1; j > i; j--) { $J)2E g  
if (data[j] < data[lowIndex]) { O>kM2xw  
lowIndex = j; 0rj50$~$]  
} Xhm)K3RA*T  
} RoeLf Ow  
SortUtil.swap(data,i,lowIndex); /eNDv(g)M  
} qASV\ <n  
} GMQKR,6VM  
B{\qYL/~  
} gWpG-RL0  
ZIikDi h1  
Shell排序: A,#a?O6m  
+o^sm'$  
package org.rut.util.algorithm.support; )w'GnUqWz  
.[8g6:>  
import org.rut.util.algorithm.SortUtil; u$V8fus0  
nh? ~S`  
/** fMZzR|_18  
* @author treeroot [3fmhc  
* @since 2006-2-2 l~*D jr~  
* @version 1.0 ]Wdnr1d~8  
*/ o`<ps$ yT  
public class ShellSort implements SortUtil.Sort{ z< ,rE  
]aTF0 R  
/* (non-Javadoc) $|pD}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )G=hgqy  
*/ w-?|6I}T  
public void sort(int[] data) { "6zf-++%  
for(int i=data.length/2;i>2;i/=2){ ry!0~ir  
for(int j=0;j insertSort(data,j,i); r0/o{Y|l6  
} o%.0@W  
} YH/3N(],  
insertSort(data,0,1); VAet!H+]  
} yy#4DYht  
FCA]zR1  
/** 2}jC%jR2  
* @param data }Z3+z@L  
* @param j *#g[ jl4  
* @param i Z@ZSn0  
*/ \:|"qk  
private void insertSort(int[] data, int start, int inc) { @w{"6xc%a  
int temp; o0\d`0-el  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2V)qnMxAZJ  
} "Iwd-#;$;  
} i*2l4  
} (4oO8 aBB  
UhVJ !NrT  
} D|Raj\R  
* J|]E(  
快速排序: aYd`E4S+  
kcyT#'=j  
package org.rut.util.algorithm.support; X;%*+xQ^  
Gn} ^BJN  
import org.rut.util.algorithm.SortUtil; GG$&=.$  
mdy+ >e <  
/** 0$\ j  
* @author treeroot I4\ c+f9  
* @since 2006-2-2 fNaboNj[  
* @version 1.0 E{W(5.kb;i  
*/ b5.L== >  
public class QuickSort implements SortUtil.Sort{ F  uJ=]T  
/Ym!%11`  
/* (non-Javadoc) >P[BwL]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :1,xse  
*/ T }^2IJ]  
public void sort(int[] data) { TU}. /b@F  
quickSort(data,0,data.length-1); 8PtX@s43\  
} I4%25=0?  
private void quickSort(int[] data,int i,int j){ ]#t5e>o|  
int pivotIndex=(i+j)/2; p4M7BK:nf  
file://swap `;H3['~$  
SortUtil.swap(data,pivotIndex,j); iyr'9BA  
[y(AdZ0*  
int k=partition(data,i-1,j,data[j]); T,SCK^  
SortUtil.swap(data,k,j); PuoN<9 #  
if((k-i)>1) quickSort(data,i,k-1); $ Ov#^wfA  
if((j-k)>1) quickSort(data,k+1,j); _ pKWDMB$z  
TB(!*t  
} kRH;c,E@  
/** |dI,4Z\Qb  
* @param data !:|[?M.`  
* @param i fw+ VR.#2H  
* @param j X'XH-E  
* @return F|{F'UXj|  
*/ #23m_w^L  
private int partition(int[] data, int l, int r,int pivot) { B#Z-kFn@  
do{ ]n$&|@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9_I#{ ?  
SortUtil.swap(data,l,r); <N}*|z7=b  
} ![CF >:e  
while(l SortUtil.swap(data,l,r); ! tPHT  
return l; z}f;_NX  
} \r7gubD  
``* !b >)  
} c`x[C  
/!HFi>   
改进后的快速排序: w\2yippI  
qk=0ovUzg  
package org.rut.util.algorithm.support; tF=Y3W+L  
?=a,  
import org.rut.util.algorithm.SortUtil; 2<GN+W v[#  
Y~+`F5xX<  
/** oq3{q  
* @author treeroot ;$>wuc'L  
* @since 2006-2-2 Imm|5-qJ  
* @version 1.0 [[8.Xb  
*/ sksop4gu5  
public class ImprovedQuickSort implements SortUtil.Sort { e lzKtVw  
2-!n+#Cdf  
private static int MAX_STACK_SIZE=4096; 2B=''W  
private static int THRESHOLD=10; |y~un9j +  
/* (non-Javadoc) qs'ggF1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b"QeCw#v`>  
*/ ]53'\TH  
public void sort(int[] data) { ajMI7j^G  
int[] stack=new int[MAX_STACK_SIZE]; g7),si*  
6K 6uB ~  
int top=-1; KXTx{R  
int pivot; 4bZ +nQgLu  
int pivotIndex,l,r; .e8S^lSl  
Owz.C_{)  
stack[++top]=0; P<GHX~nB  
stack[++top]=data.length-1; %*`yd.L0W  
:U$U:e  
while(top>0){ Vj{}cL"MR  
int j=stack[top--]; X=d;WT4,,  
int i=stack[top--]; <<:a >)6\  
#ZS8}X*S  
pivotIndex=(i+j)/2; TSCc=c  
pivot=data[pivotIndex]; *Ul L\  
VG+WVk  
SortUtil.swap(data,pivotIndex,j); Up|>)WFw"  
| *J-9  
file://partition ;UB$Uqs6  
l=i-1; }4M4D/=  
r=j; C;_*vi2u  
do{ 8NS1*\z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v'zj<|2  
SortUtil.swap(data,l,r); 2E X Rq  
} WCPl}7>  
while(l SortUtil.swap(data,l,r); aA/.EAc7  
SortUtil.swap(data,l,j); |#D$9+  
fW'U7&O  
if((l-i)>THRESHOLD){ uRu)iBd D  
stack[++top]=i; M$Of.  
stack[++top]=l-1; )-4xI4  
} b+`mh  
if((j-l)>THRESHOLD){ >4lT0~V/  
stack[++top]=l+1; "TgE@bC  
stack[++top]=j; |+0XO?,sZ  
} F&I ;E i  
4;hgi[  
} sXaIQhZ  
file://new InsertSort().sort(data); %: .{?FB_  
insertSort(data); Oor&1  
} umo@JWr  
/** fsDwfwil*  
* @param data CN"hx-f  
*/ ugI9rxT]Kv  
private void insertSort(int[] data) { Xu8_<%  
int temp; yHL5gz@k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }7H8Y}m  
} 3h|:ew[  
} bkgJz+u  
} P5*~ Wi`  
\%!~pfM I  
} \dz@hJl:  
 MXj7Z3  
归并排序: rHWlv\+N n  
}`,}e259  
package org.rut.util.algorithm.support; oIP<7gz  
Lz9t9AoB  
import org.rut.util.algorithm.SortUtil; utvZ<zz`  
2"~QI xY=  
/** oT\u^WU  
* @author treeroot G#pRBA^  
* @since 2006-2-2 u{o!#_o64  
* @version 1.0 S^Z[w|1  
*/ ~KufSt *  
public class MergeSort implements SortUtil.Sort{ .#] V5g,  
R""P01IZH  
/* (non-Javadoc) V~uH)IMkh7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]$>O--  
*/ i: ZL0nH-  
public void sort(int[] data) { jB17]OCN  
int[] temp=new int[data.length]; SOI$Mx  
mergeSort(data,temp,0,data.length-1); %dMP}k/  
} #iOoi9(  
BF_R8H,<%  
private void mergeSort(int[] data,int[] temp,int l,int r){ RG)!v6  
int mid=(l+r)/2; @KhDQ0v]5  
if(l==r) return ; aJC,  
mergeSort(data,temp,l,mid); >*PZ&"}M  
mergeSort(data,temp,mid+1,r); \+cU}  
for(int i=l;i<=r;i++){ 65ctxxWv1  
temp=data; V2I"m  
} .#,!&Lt  
int i1=l; G' ~Z'  
int i2=mid+1; ?_L)|:WL  
for(int cur=l;cur<=r;cur++){ 5UQz6DK  
if(i1==mid+1) [`~E)B1Y  
data[cur]=temp[i2++]; }T?0/N3y&  
else if(i2>r) V^P]QQ\ )  
data[cur]=temp[i1++]; VV*Z5U@b  
else if(temp[i1] data[cur]=temp[i1++]; TRl,L5wd-?  
else e `!PQMLU  
data[cur]=temp[i2++]; X4:\Shb97  
} 1jJ>(S  
} nl)!)t=n  
p`)GO.pz  
} :K ^T@F5n  
=7JvS~s  
改进后的归并排序: s0 ZF+6f  
H+`s#'(i_P  
package org.rut.util.algorithm.support; 3TRzDE(J  
zqDIwfW  
import org.rut.util.algorithm.SortUtil; >xU$)uE&  
)x/Spb  
/** UJXRL   
* @author treeroot UN <s1  
* @since 2006-2-2 =rA"|=  
* @version 1.0 G6C#M-S  
*/ @O/Jy2>3H  
public class ImprovedMergeSort implements SortUtil.Sort { 5U&b")3IT!  
oh k.;  
private static final int THRESHOLD = 10; i(^&ZmG  
kCXQHX  
/* I+,~pmn:  
* (non-Javadoc) v`"z  
* S`oADy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O\h*?, )  
*/ /Q4TQ\:  
public void sort(int[] data) { p&SxR}h  
int[] temp=new int[data.length]; j~(s3pSCo  
mergeSort(data,temp,0,data.length-1); _;G. QwHr  
} DD3.el}6a  
B>&Q]J+R  
private void mergeSort(int[] data, int[] temp, int l, int r) { uT'}_2=:  
int i, j, k; :Yi1#  
int mid = (l + r) / 2; @5!Mr5;  
if (l == r) Z*EK56.b  
return; VQ5D?^'0/  
if ((mid - l) >= THRESHOLD) >+iJ(jqq  
mergeSort(data, temp, l, mid); 'u6T^YS  
else mXd,{b'  
insertSort(data, l, mid - l + 1); _d#1muZ?p|  
if ((r - mid) > THRESHOLD) WgxGx`Y)  
mergeSort(data, temp, mid + 1, r); '?Mt*%J@=$  
else poZ04Uxo>  
insertSort(data, mid + 1, r - mid); zW^_w&fd^j  
^gb3DNV~y  
for (i = l; i <= mid; i++) { G_GV  
temp = data; [?3]+xr :  
} uD=i-IHT  
for (j = 1; j <= r - mid; j++) { (yjx+K_[  
temp[r - j + 1] = data[j + mid]; &b[ .bf  
} xV&c)l>}  
int a = temp[l]; \K$9r=!(  
int b = temp[r]; sN`2"t/s  
for (i = l, j = r, k = l; k <= r; k++) { g.wp }fz  
if (a < b) { |JZ3aS   
data[k] = temp[i++]; v~f_~v5J!  
a = temp; aDrF" j  
} else { s}8(__|  
data[k] = temp[j--]; /5qeNjI+2  
b = temp[j]; !~+"TI}_%w  
} `SdvX n  
} Aofk<O!M  
} BI\ )vr$  
@>Y.s6a  
/** : +Na8\d  
* @param data DQC=f8  
* @param l +Bg$]~ T  
* @param i Lnin;0~{  
*/ T r|B:)X  
private void insertSort(int[] data, int start, int len) { ?b?6/_W~R  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ({XB,Rm  
} h<)YZ[;x  
} nQe^Bn  
} o~Jce$ X  
} ETt7?,x@  
bXSsN\:Y@[  
堆排序: x*]&Ca0+  
[1+ o  
package org.rut.util.algorithm.support; V}?*kx~T2C  
+m|S7yr'  
import org.rut.util.algorithm.SortUtil; ^|u7+b'|t  
8|Wu8z--  
/** HPz9Er  
* @author treeroot 7R4sd  
* @since 2006-2-2 :{:R5d(_I  
* @version 1.0 %sd1`1In  
*/ N_ 3$B=  
public class HeapSort implements SortUtil.Sort{ ZDMv8BP7  
=ttvC"4?  
/* (non-Javadoc) G~z=,72  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K90wX1&  
*/ PxuE(n V[  
public void sort(int[] data) { :%_*C09  
MaxHeap h=new MaxHeap(); (u/-ud1p  
h.init(data); <ttrd%VW  
for(int i=0;i h.remove(); 'CF?pxNQ l  
System.arraycopy(h.queue,1,data,0,data.length); $<;!F=%8  
} (T290a9y>  
MK"p~b0->  
private static class MaxHeap{ R,+Pcn$ws  
Ue:LKK1Gsr  
void init(int[] data){ vBFMne1h  
this.queue=new int[data.length+1]; y {&"g  
for(int i=0;i queue[++size]=data; M)m(  
fixUp(size); ;iol 2  
} 29a~B<e7s  
} &@g~o0  
d-GU164  
private int size=0; ,iUWLcOM  
;rp("<g:>  
private int[] queue; Z2Q'9C},m  
){-Tt`0(u  
public int get() { q mJ#cmN  
return queue[1];  c@eQSy  
} j ^Tb=  
8IeE7  
public void remove() { \`ya08DP(  
SortUtil.swap(queue,1,size--); l(irNKutgo  
fixDown(1); o|Q:am'H  
} T ^ z  
file://fixdown B^7B-RBi0  
private void fixDown(int k) { I_?+;<n  
int j; 1/JtL>SKE  
while ((j = k << 1) <= size) { 9i6z  p'  
if (j < size %26amp;%26amp; queue[j] j++; $-J0ou8~  
if (queue[k]>queue[j]) file://不用交换 bcM65pt_C  
break; ,.<[iHC}9  
SortUtil.swap(queue,j,k); B=?m_4\$m  
k = j; L=7Y~aL=  
} /$EX -!ie  
} Z.^DJ9E<1  
private void fixUp(int k) { ";kwh8wB  
while (k > 1) { [9<c;&$LU  
int j = k >> 1; JWh5gOXd  
if (queue[j]>queue[k]) +#;t.&\80N  
break; Z=[qaJ{]  
SortUtil.swap(queue,j,k); r$8(Q'  
k = j; k},@2#W]  
} =c(t;u6m-  
} D+nKQ4  
M]5)u=}S-  
} ;hf{B7  
K2Z]MpLD  
} \!51I./Q/  
iBqxz:PHN(  
SortUtil: c"wk_ #  
rtjUHhF  
package org.rut.util.algorithm; 0: 1[F!]'b  
S17iYjy#8T  
import org.rut.util.algorithm.support.BubbleSort; E;o "^[we  
import org.rut.util.algorithm.support.HeapSort; K/flg|uZ/V  
import org.rut.util.algorithm.support.ImprovedMergeSort; hL?"!  
import org.rut.util.algorithm.support.ImprovedQuickSort; q PveG1+25  
import org.rut.util.algorithm.support.InsertSort; Qhc>,v)  
import org.rut.util.algorithm.support.MergeSort; Ii.0Bul  
import org.rut.util.algorithm.support.QuickSort; OMY^'g%w  
import org.rut.util.algorithm.support.SelectionSort; &UFj U%Z%  
import org.rut.util.algorithm.support.ShellSort; =q\Ghqj1  
r(ZMZ^  
/** cv=H6j]h |  
* @author treeroot IYG,nt !  
* @since 2006-2-2 o8RVmOXe  
* @version 1.0 L*(!P4S%}  
*/ ["u:_2!4P  
public class SortUtil { 0Tv0:c>8;(  
public final static int INSERT = 1; ZZ? KD\S5  
public final static int BUBBLE = 2; "<N2TDF5  
public final static int SELECTION = 3; LykB2]T  
public final static int SHELL = 4; l-gNJ=l+K  
public final static int QUICK = 5; O0Pb"ou_h.  
public final static int IMPROVED_QUICK = 6; 2ophh/]  
public final static int MERGE = 7; {W' 9k  
public final static int IMPROVED_MERGE = 8; P\rA>ZY  
public final static int HEAP = 9; ev4f9Fhu  
W2w A66MB  
public static void sort(int[] data) { IaHu$` v  
sort(data, IMPROVED_QUICK); ` it<\r[=  
} >zS<1  
private static String[] name={ )azK&f@tR|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W<c95QD.  
}; C"*8bVx]$n  
?*/1J~<(@  
private static Sort[] impl=new Sort[]{ 9F "^MzZ  
new InsertSort(), ,]LsX"u  
new BubbleSort(), &y+)xe:&S  
new SelectionSort(), r.ib"W#4  
new ShellSort(), U)Jwo O  
new QuickSort(), J=?P`\h  
new ImprovedQuickSort(), xt zjFfq  
new MergeSort(), @Rw]boC  
new ImprovedMergeSort(), n8.Tag(#  
new HeapSort() ]kir@NMv>  
}; TN=!;SvQU  
Zsto8wuf#  
public static String toString(int algorithm){ DedY(JOvB  
return name[algorithm-1]; 3EA+tG4KnO  
} 9=}&evGm89  
/=@V5)  
public static void sort(int[] data, int algorithm) { U3^3nL-M9  
impl[algorithm-1].sort(data); &Cm$%3  
} %jh gKq  
G6XDPr:}  
public static interface Sort { \Gm\sy  
public void sort(int[] data); laQ{nSVBm  
} C~X"ZW:d[  
 nJ|M  
public static void swap(int[] data, int i, int j) { d "%6S*dL  
int temp = data; ]j+J^g  
data = data[j]; ,382O$C  
data[j] = temp; 9YvK<i&I  
} <i ";5+  
} pmuT7*<19  
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