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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。 g{6FpuA|0  
插入排序: eQqnPqi-  
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package org.rut.util.algorithm.support; ^V}c8 P|  
t 7-6A  
import org.rut.util.algorithm.SortUtil; icK>|   
/** J5!-<oJ/  
* @author treeroot &M>o  
* @since 2006-2-2 A Xpg_JC  
* @version 1.0 *$]50 \W  
*/ ni$;"R GC  
public class InsertSort implements SortUtil.Sort{ oNhCa>)/  
A('o &H  
/* (non-Javadoc) *qZBq&7tb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BaVooN~C  
*/ icK$W2<8mg  
public void sort(int[] data) { gb{8SG5ac  
int temp; ~2;\)/E\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @?JFqwq!  
} QXu[<V  
}  "F=ta  
} Skg}/Ek  
2kcDJ{(  
} (u4'*[o\t  
%p:Z(zU  
冒泡排序: SM8f"H28  
gNJdP!(t  
package org.rut.util.algorithm.support; $[g#P^  
JU#m?4g  
import org.rut.util.algorithm.SortUtil; <Nk:C1Op}  
*C);IdhK%y  
/** bU\T  
* @author treeroot 2>[xe  
* @since 2006-2-2 8VtRRtl  
* @version 1.0 q/^?rd  
*/ J4x|Afp  
public class BubbleSort implements SortUtil.Sort{ 9;Q|" T  
iR"6VO  
/* (non-Javadoc) h1H$3TpP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F`La_]f?b\  
*/ $ V !25jQ  
public void sort(int[] data) {  {FX]1:  
int temp; } eF r,bJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S5kD|kJ  
if(data[j] SortUtil.swap(data,j,j-1); 0NK|3]p  
} ~{ GTL_w  
} CZE!@1"<{  
} W^7yh&@lU  
} p~NHf\  
 =W&m{F96  
} S['cX ~  
t,n2N13  
选择排序: xs&xcR R"  
mo+!79&  
package org.rut.util.algorithm.support; %LM6=nt  
MsZx 0]  
import org.rut.util.algorithm.SortUtil; sjOv!|]A  
+f%"O?  
/** ^?wR{q"8  
* @author treeroot N~0ih T G5  
* @since 2006-2-2 B&7NF}CF2  
* @version 1.0 :T|9;2  
*/ 6$0<&')Yb  
public class SelectionSort implements SortUtil.Sort { 5dhy80|g]  
6#AEVRJKU@  
/* E[7E%^:Mg  
* (non-Javadoc) 8rx|7  
* Z\]{{;%4b7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vaJl}^T  
*/ 1Q!kk5jE  
public void sort(int[] data) { yZ[=Y  
int temp; 0b/@QgJ  
for (int i = 0; i < data.length; i++) { ;aj;(Z.p)  
int lowIndex = i; h@Jg9AM  
for (int j = data.length - 1; j > i; j--) { b;{"@b,Y  
if (data[j] < data[lowIndex]) { 97U OH  
lowIndex = j; 3HBh 3p5  
} f,F1k9-1!  
} VdGVEDwz  
SortUtil.swap(data,i,lowIndex); AorY#oq  
} .k-6LR  
} 3y+~l H :  
3 tCTPZy  
} kz1#"8Zd!  
/t< &  
Shell排序: M.6uWwzQR  
%)r:!R~R  
package org.rut.util.algorithm.support; Z'>UR.g  
39hep8+  
import org.rut.util.algorithm.SortUtil; dq@ * 8ui  
m[^ )Q9o}  
/** LSA6*Q51  
* @author treeroot Il9xNVos#  
* @since 2006-2-2  ?O+.  
* @version 1.0 \O4s0*gw  
*/ ~nhO*bs}7{  
public class ShellSort implements SortUtil.Sort{ <8;~4"'a  
[5p3:D  
/* (non-Javadoc) _B#x{ii  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qD4s?j-9  
*/ #*/nUbsg  
public void sort(int[] data) { xGQP*nZ  
for(int i=data.length/2;i>2;i/=2){ >\^oCbqF}~  
for(int j=0;j insertSort(data,j,i); `,xO~_ e>  
} C3Q #[  
} Jz>P[LcB  
insertSort(data,0,1); R;pW,]}g,  
} t6\H  
1HKA`]D"p  
/** oJ %Nt&q  
* @param data v0dzM/?*  
* @param j p0 X%^A,4  
* @param i y>x"/jzF#  
*/ vR:#g;mnk  
private void insertSort(int[] data, int start, int inc) { b9vud r  
int temp;  q/ Y4/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d@g29rs  
} G-2~$ u  
} -k7b# +T  
} Ewp2 1  
&hkD"GGe  
} e-P{)L<s5  
gEsD7]o(=  
快速排序:  ..E_M$}  
k^8;3#xG  
package org.rut.util.algorithm.support; 8 <;.[l  
{22ey`@`h  
import org.rut.util.algorithm.SortUtil; hG.}>(VV  
D((/fT)eD  
/** jd ;)8^7K  
* @author treeroot !{CIP`P1  
* @since 2006-2-2 YT oG'#qs  
* @version 1.0 ~&p]kmwXSX  
*/ g]HWaFjc5  
public class QuickSort implements SortUtil.Sort{ yN{**?b  
#&IrCq+  
/* (non-Javadoc) Bf00&PE;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O4f9n  
*/ GY-4w@Wl  
public void sort(int[] data) { jrN 5l1np  
quickSort(data,0,data.length-1); p gLhxc:  
} cJq {;~   
private void quickSort(int[] data,int i,int j){ eWm'eO  
int pivotIndex=(i+j)/2; ym6Emf]  
file://swap =Xr{ Dg  
SortUtil.swap(data,pivotIndex,j); uGXvP(Pg'  
y@*4*46v  
int k=partition(data,i-1,j,data[j]); A@lM =   
SortUtil.swap(data,k,j); XS@iu,uO  
if((k-i)>1) quickSort(data,i,k-1); }])j>E  
if((j-k)>1) quickSort(data,k+1,j); E#m^.B-}  
w/o8R3 F  
} EB+4]MsD  
/** OI)k0t^;D  
* @param data wjX0r7^@  
* @param i bu pW*fD:  
* @param j #Qz 9{1\G  
* @return #oEtLb@O  
*/ i`CNgScF>  
private int partition(int[] data, int l, int r,int pivot) { w\d1  
do{ MJe/ \  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?P7QAolrr  
SortUtil.swap(data,l,r); B\AyG4J  
} SP2";,%/9  
while(l SortUtil.swap(data,l,r); `ZC -lAY  
return l; )0 6. dZq\  
} olo9YrHn  
<MhODC")  
} Sb?v5  
8_D:#i  
改进后的快速排序: '2|mg<Ft  
 5 YIk  
package org.rut.util.algorithm.support; !&KE">3Qu  
@d3yqA  
import org.rut.util.algorithm.SortUtil; \@Z D.d#  
:8)3t! A  
/** 0_>1CW+X  
* @author treeroot "$%&C%t  
* @since 2006-2-2 ,5*<C'9  
* @version 1.0 `a7b,d  
*/ "[L+LPET  
public class ImprovedQuickSort implements SortUtil.Sort { P)=$0kR3  
x?R1/iHv  
private static int MAX_STACK_SIZE=4096; czo*_q%  
private static int THRESHOLD=10; :NwFJc  
/* (non-Javadoc) [9CBTS r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Ot5W  
*/ GV)DLHiyxX  
public void sort(int[] data) { ]ao%9:P;  
int[] stack=new int[MAX_STACK_SIZE]; %`dVX EO  
8+_e=_3R  
int top=-1; ]mO7O+  
int pivot; P'5Q}7  
int pivotIndex,l,r; :bp8S@  
<M3&\  
stack[++top]=0; &ujq6~#  
stack[++top]=data.length-1; h5H#xoCXp  
y=y#*yn&  
while(top>0){ g9gyx/'*  
int j=stack[top--]; QfU{W@!h  
int i=stack[top--]; ?B4X&xf.D  
Mg^3Y'{o  
pivotIndex=(i+j)/2; ~{yQsEU  
pivot=data[pivotIndex]; xb(y15R\I  
yD&UH_ 1g  
SortUtil.swap(data,pivotIndex,j); tj!~7lo  
y"0! 7^  
file://partition ud,_^Ul  
l=i-1; XM*%n8q7#N  
r=j; nR$Q~`  
do{ |f&=9%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bU"2D.k  
SortUtil.swap(data,l,r); AqP7UL  
} .[:*bo3  
while(l SortUtil.swap(data,l,r); h)C `w'L  
SortUtil.swap(data,l,j); 9"k^:}8.  
wd~!j&`a  
if((l-i)>THRESHOLD){ V IU4QEW`x  
stack[++top]=i; 6~6*(s|]A  
stack[++top]=l-1; f9&po2Pzf  
} 3/((7O[  
if((j-l)>THRESHOLD){ S A16Ng  
stack[++top]=l+1; @460r  
stack[++top]=j; !+I!J s"  
} l+8G6?@]>  
_"%-=^_  
} &ffd#2f`@  
file://new InsertSort().sort(data); sv?Lk4_  
insertSort(data); r$Ck:Q}  
} zc#aQ.  
/** okZDxg`6  
* @param data VpkkiN  
*/ UDz#?ZWnd  
private void insertSort(int[] data) { =XT}&D6  
int temp; 7$* O+bkn:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v81H!c.*  
} =m?x|Zc_v  
} :Vf:_;  
} %7~~*_G  
]RJcY1  
} mxV0"$'Fm  
k9<P]%  
归并排序: }[OOkYF#r  
,2YkQ/ >  
package org.rut.util.algorithm.support; xui.63/  
2,X~a;+  
import org.rut.util.algorithm.SortUtil; @ukIt  
}XiV$[xHd  
/** 2= 6}! Y  
* @author treeroot ,!s;o6|*y  
* @since 2006-2-2 $fwv'  
* @version 1.0 >f$>Odqe  
*/ =i/7&gC  
public class MergeSort implements SortUtil.Sort{ ~)JNevLZ  
'bXm,Ed  
/* (non-Javadoc) Xn'{g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / b_C9'S  
*/ jCMr[ G=  
public void sort(int[] data) { ./009p  
int[] temp=new int[data.length];  Wb/q&o  
mergeSort(data,temp,0,data.length-1); .(0'l@#fT  
} :! h1S`wS  
KU> $=Rd  
private void mergeSort(int[] data,int[] temp,int l,int r){ f@%H"8w!  
int mid=(l+r)/2; E  K)7g~  
if(l==r) return ; jQp7TdvLE$  
mergeSort(data,temp,l,mid); Lii,L}  
mergeSort(data,temp,mid+1,r); D,rF?t>=S  
for(int i=l;i<=r;i++){ =!b<@41  
temp=data; cboue LEt  
} s^]F4'  
int i1=l; hDp -,ag{  
int i2=mid+1; WdGjvs  
for(int cur=l;cur<=r;cur++){ <303PPX^6  
if(i1==mid+1) 3:f<cy   
data[cur]=temp[i2++]; \o-Q9V  
else if(i2>r)  Sxrbhnx  
data[cur]=temp[i1++]; ^gwVh~j  
else if(temp[i1] data[cur]=temp[i1++]; 06 kjJ4  
else SEn-8ZF  
data[cur]=temp[i2++]; ))" *[  
} I-E}D"F;p[  
} 8,BNs5  
bY4~\cP.  
} =rV*iLy  
Ng?n}$g*  
改进后的归并排序: dF2 &{D"J  
5G@z l  
package org.rut.util.algorithm.support; AR i_m  
2,c{Z$\kn  
import org.rut.util.algorithm.SortUtil; Ixhe86-:T  
O Xy>Tlv  
/** b]v.jgD  
* @author treeroot N@$g"w  
* @since 2006-2-2 @'.(62v  
* @version 1.0 Ctpr.  
*/ 1us-ootsjP  
public class ImprovedMergeSort implements SortUtil.Sort { _L mDF8Q(  
8Yr_$5R  
private static final int THRESHOLD = 10; zPp?D_t  
@|:_?  
/* 7q>WO  
* (non-Javadoc) b[<zT[.:  
* {{c/:FTEU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %oas IiO  
*/ uXiAN#1  
public void sort(int[] data) { ^YddVp  
int[] temp=new int[data.length]; `A8nAgbe  
mergeSort(data,temp,0,data.length-1); S}Wj+H;  
} *f8; #.Re  
YGP.LR7  
private void mergeSort(int[] data, int[] temp, int l, int r) { Az29?|e  
int i, j, k; tG(#&54  
int mid = (l + r) / 2; +H5= zf2  
if (l == r) 0?} ),8v>  
return; }5~|h%  
if ((mid - l) >= THRESHOLD) L~_3BX  
mergeSort(data, temp, l, mid); `mTpL^f  
else \_pP:e  
insertSort(data, l, mid - l + 1); R[Q`2ggG  
if ((r - mid) > THRESHOLD) vT)(#0>z  
mergeSort(data, temp, mid + 1, r); "'us.t.  
else @= f2\hU  
insertSort(data, mid + 1, r - mid); >p4#AfGF  
j(4BMk  
for (i = l; i <= mid; i++) { Tw BwqQ)t  
temp = data; P;o6rQf  
} .LDK+c  
for (j = 1; j <= r - mid; j++) { cn&\q.!fh  
temp[r - j + 1] = data[j + mid]; H!Gsu$C  
} vzl+0"  
int a = temp[l]; QXZjsa_|  
int b = temp[r]; ?N2/;u>  
for (i = l, j = r, k = l; k <= r; k++) { qgd#BJ=  
if (a < b) { -oo&8  
data[k] = temp[i++]; ".jY3<bQg  
a = temp; a+!#cQl  
} else { LaL.C^K  
data[k] = temp[j--]; lhsd 39NM  
b = temp[j]; Q2sX7 cE  
} PjriAlxD  
} ~^*IP1.3  
} aBk~/  
mo1(dyjx  
/** Hn"xn79nc  
* @param data '<" eG!O  
* @param l >[TB8  
* @param i  DJ?kQ  
*/ zlC|Spaf  
private void insertSort(int[] data, int start, int len) { a nK7j2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6'6 "Ogu%'  
} >5C|i-HX  
} .a._WZF  
} jEr/*kv  
} 'V";"Ei  
u/?s_OR  
堆排序: 5 _X|U*+5  
'^f,H1oW  
package org.rut.util.algorithm.support; rblEyCR  
L~N<<8?\   
import org.rut.util.algorithm.SortUtil; TCAtb('D  
;O=tSEe  
/** a f[<[2pma  
* @author treeroot 4qq+7B  
* @since 2006-2-2 s)Bl1\Q  
* @version 1.0 fY3^L"R  
*/ wYnsd7@I  
public class HeapSort implements SortUtil.Sort{ tRU+6D <w  
Xq`|'6]/  
/* (non-Javadoc) s5 ? 1w   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FHpS?htRy  
*/ >?iL_YTX  
public void sort(int[] data) { K3jKOV8   
MaxHeap h=new MaxHeap(); ab ?   
h.init(data); }RX[J0Prq~  
for(int i=0;i h.remove(); _:oB#-0  
System.arraycopy(h.queue,1,data,0,data.length); Vae}:8'}  
} H8d%_jCr  
%00KOM:  
private static class MaxHeap{ 0M^7#),  
JWhi*je  
void init(int[] data){ 6Yw;@w\  
this.queue=new int[data.length+1]; ;=goIsk{Q  
for(int i=0;i queue[++size]=data; u 0M[B7Q  
fixUp(size); w"Gci~]bXU  
} >Micc   
} o HqBNTyH  
5U)Ia>p  
private int size=0; `I|$U)'  
&DoYz[q  
private int[] queue; !1 :%!7  
V 8`o71p  
public int get() { ^ NZq1c  
return queue[1]; vmW > $P  
} ? &ie;t<7  
&'{6_-kh  
public void remove() { Ne7HPSWiOP  
SortUtil.swap(queue,1,size--); Pn:L=*  
fixDown(1); sPMCN's  
} 9[yW&t;#  
file://fixdown cMxuG'{=.  
private void fixDown(int k) { w1q-bIU  
int j; O$ dz=)  
while ((j = k << 1) <= size) { A")F7F31c  
if (j < size %26amp;%26amp; queue[j] j++; %JUD54bBt  
if (queue[k]>queue[j]) file://不用交换 W&E?#=*X  
break; o+{]&V->gN  
SortUtil.swap(queue,j,k); -/ 5" Py  
k = j; xgsEJE  
} ~>8yJLZ.7  
} TmI~P+5w  
private void fixUp(int k) { Zy !^HS$  
while (k > 1) { }>`rf{T  
int j = k >> 1; h- )tWJ c  
if (queue[j]>queue[k]) }<m'Nkz<X  
break; )"W__U0  
SortUtil.swap(queue,j,k); alr'If@7  
k = j;  ! @EZ  
} f]c{,LFvZ  
} < cNJrer  
7$"{&T  
} 2G=prS`s  
,x (?7ZW>  
} p./9^S  
]7+9>V  
SortUtil: d v8q&_  
X*'i1)_h  
package org.rut.util.algorithm; ~w Ekbq=  
r.WQ6h/eZ5  
import org.rut.util.algorithm.support.BubbleSort; 3MqyHOOv  
import org.rut.util.algorithm.support.HeapSort; "rHcsuSEw  
import org.rut.util.algorithm.support.ImprovedMergeSort; sVT:1 kI  
import org.rut.util.algorithm.support.ImprovedQuickSort; ut SW>  
import org.rut.util.algorithm.support.InsertSort; tfz"9PV80  
import org.rut.util.algorithm.support.MergeSort; l$1 ]  
import org.rut.util.algorithm.support.QuickSort; eMHBY6<~=  
import org.rut.util.algorithm.support.SelectionSort; qcVmt1"  
import org.rut.util.algorithm.support.ShellSort; h*X5O h6  
B183h  
/** &9j*Y  
* @author treeroot HpCTQ\H  
* @since 2006-2-2 w20)~&LE-  
* @version 1.0 =lb5 #  
*/ 3ncL351k  
public class SortUtil { uT#4"G9A[  
public final static int INSERT = 1; K;L6<a A#  
public final static int BUBBLE = 2; lGhhH _  
public final static int SELECTION = 3; T<ka4  
public final static int SHELL = 4; xR~9|H9a  
public final static int QUICK = 5; >;s!X(6 b  
public final static int IMPROVED_QUICK = 6; $cSmubZK  
public final static int MERGE = 7; 8T523VI  
public final static int IMPROVED_MERGE = 8; rbw~Ml0  
public final static int HEAP = 9; +,q#'wSQG  
o;[cApiQ,2  
public static void sort(int[] data) { ^1w<wB\B  
sort(data, IMPROVED_QUICK); TdKo"H*C  
} 9O4\DRe5c  
private static String[] name={ ,DIr&5>p2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QHHj.ZY  
}; nvInq2T 1  
)u?^w  
private static Sort[] impl=new Sort[]{ WupONrH1e  
new InsertSort(), hd>_K*oH  
new BubbleSort(), 4p6\8eytq.  
new SelectionSort(), ?{]"UnyVE*  
new ShellSort(), b O9PpOk+z  
new QuickSort(), {>h,@  
new ImprovedQuickSort(), O5v~wLx9e  
new MergeSort(), Yu+;vjbK-  
new ImprovedMergeSort(), 6^QSV@N|  
new HeapSort() j V'~>  
}; 3kJ7aBiR<  
dTVh{~/  
public static String toString(int algorithm){ ' JAcN@q~z  
return name[algorithm-1]; ^!7|B3`  
} {fxytiH8  
cnL@j_mb  
public static void sort(int[] data, int algorithm) { zlhU[J}"1|  
impl[algorithm-1].sort(data); _edT+r>+  
} Ksb55cp`  
HV[*=Qi  
public static interface Sort { 8,&pX ga  
public void sort(int[] data); \Lz4ZZjSY  
} A3A"^f$$  
4<A+Tf  
public static void swap(int[] data, int i, int j) { Y;1J` oT  
int temp = data; BDcA_= ^R&  
data = data[j]; {SwvUWOf"  
data[j] = temp; Senb_?  
} W@WKdaJ  
} &d6  
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