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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。 4h|c<-`>t  
插入排序: ZrpU <   
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package org.rut.util.algorithm.support; b3=rG(0f  
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import org.rut.util.algorithm.SortUtil; k\5c|Wq|g  
/** >;e~WF>+K  
* @author treeroot H#,W5EJzM  
* @since 2006-2-2 (A9Fhun  
* @version 1.0 <^#,_o,!  
*/ TM%| '^)  
public class InsertSort implements SortUtil.Sort{ Fs9!S a7v  
]d$8f  
/* (non-Javadoc) |d{PA.@33  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p`olCp'  
*/ ,Vc6Gwm  
public void sort(int[] data) { 5_GYrR2  
int temp; y%"{I7!A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); glO^yZs  
} em%4Ap  
} igCZ|Ru\  
} }Y12  
V5+=e^pa2  
} f,U.7E  
#NEE7'&S  
冒泡排序: 8{^kQ/]'|  
kMIcK4.MH  
package org.rut.util.algorithm.support; n@<YI  
3#3n!(  
import org.rut.util.algorithm.SortUtil; 5TH~.^`Fi  
LBw1g<&  
/** 0"jY.*_EW  
* @author treeroot NVkV7y X]  
* @since 2006-2-2 ~[t[y~Hup  
* @version 1.0 c[0}AG J  
*/ yb<fpM  
public class BubbleSort implements SortUtil.Sort{ uy>q7C  
k =>oO9`  
/* (non-Javadoc) *3+4[WT0]a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D}-/c"':}  
*/ .73X3`P25  
public void sort(int[] data) { ">\?&0  
int temp; s:n6rG  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L^1NY3=$  
if(data[j] SortUtil.swap(data,j,j-1); P\E<9*V  
} LQ@"Xe]5  
} #|uCgdi  
} 0CHH)Bku  
} g_;\iqxL  
NDN7[7E  
} `}p0VmD{NE  
%Hu5K>ZNYp  
选择排序: z<MsKD0Q  
p?02C# p  
package org.rut.util.algorithm.support; =}~hWL  
D(~U6SR  
import org.rut.util.algorithm.SortUtil; f[]dfLS"W  
v&6-a*<Z  
/** i}cRi&2[  
* @author treeroot B`EJb71^Xy  
* @since 2006-2-2 -{("mR&]  
* @version 1.0 ]a>n:p]e  
*/ m&d|t>3<  
public class SelectionSort implements SortUtil.Sort { 49eD1h3'X[  
R8K&R\  
/* ~?l | [  
* (non-Javadoc) [|v][Hwv  
* \<bx [,?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n3WlZ!$  
*/ ::`HQ@^  
public void sort(int[] data) { ,Co|-DYf}  
int temp; )Om*@;r(  
for (int i = 0; i < data.length; i++) { hWjc<9  
int lowIndex = i; )705V|v  
for (int j = data.length - 1; j > i; j--) { YqscZ(L:y  
if (data[j] < data[lowIndex]) { e+EQ]<M  
lowIndex = j; ;[ZEDF5H  
} juJklSD  
} GblA9F7  
SortUtil.swap(data,i,lowIndex); ,KH#NY]  
} :@Pl pF K  
} &$+AXzn  
&C_j\7Dq  
} `bq<$e  
<sbu;dQ`  
Shell排序: +Ze} B*0  
ic:zsuEm  
package org.rut.util.algorithm.support; #\{l"-  
'ms-*c&  
import org.rut.util.algorithm.SortUtil; &u."A3(  
yX>K/68  
/** yZY\MB/  
* @author treeroot gjyYCjF  
* @since 2006-2-2 kt#fMd$  
* @version 1.0 _;S-x  
*/ ),%%$G\  
public class ShellSort implements SortUtil.Sort{ %6 zB Sje  
b#%hY{$j  
/* (non-Javadoc) Qp5VP@t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C}j"Qi`  
*/ QT5TE: D  
public void sort(int[] data) { @D[_}JE  
for(int i=data.length/2;i>2;i/=2){ 1ba~SHi  
for(int j=0;j insertSort(data,j,i); Pbn*_/H  
} |*xA 8&/  
} n+9=1Oo"  
insertSort(data,0,1); ?=msH=N<l  
} AR%4D3Dma  
q[_Vu A]&  
/** Dj?> <@  
* @param data HyQJXw?A:  
* @param j 6Pnjmw.HV  
* @param i pU}(@oy  
*/ ~Ffo-Nd-  
private void insertSort(int[] data, int start, int inc) { W(Fv l  
int temp; >2)OiQ`zg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >>)b'c  
} ?3,:-"(@p  
} )EuvRLo{S7  
} Kk0g0C:"EO  
i# /Jr=  
} d"mkL-  
9&2O 9Nz6  
快速排序: ^mDe08. %b  
d L 1tl  
package org.rut.util.algorithm.support; 8W(*~}ydYY  
D/xbF`  
import org.rut.util.algorithm.SortUtil; _Ey9G  
$9#H04.x  
/** ~ 'cmSiz-  
* @author treeroot l/ GGCnO/  
* @since 2006-2-2 k,6f &#x  
* @version 1.0 G6P?2@  
*/ .V/Rfq  
public class QuickSort implements SortUtil.Sort{ ZY55|eE  
a2O75 kWnm  
/* (non-Javadoc) zkrM/ @p#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 7.+ .2  
*/ 8I?Wt W  
public void sort(int[] data) { mHTXni<!  
quickSort(data,0,data.length-1); .t-4o<7 3  
} )p0^zv{  
private void quickSort(int[] data,int i,int j){ ]i)c{y  
int pivotIndex=(i+j)/2; 'RR~7h  
file://swap (O?.)jEW(.  
SortUtil.swap(data,pivotIndex,j); sN*N&XG  
X1|njJGO1  
int k=partition(data,i-1,j,data[j]); Oh`69 k  
SortUtil.swap(data,k,j); ~9]hV7y5C  
if((k-i)>1) quickSort(data,i,k-1); o Q2Fjj  
if((j-k)>1) quickSort(data,k+1,j); Pb4X\9^  
Ad8n<zt|  
} jDfC=a])  
/** I\{ 1u  
* @param data g" DG]/ev  
* @param i /QWvW=F2<  
* @param j oy=js -  
* @return c /HHy,  
*/ 61>.vT8P  
private int partition(int[] data, int l, int r,int pivot) { vhW2PzHFRi  
do{ F=e8IUr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9gDkTYkj  
SortUtil.swap(data,l,r); T{.pM4Hd  
} ox~o J|@  
while(l SortUtil.swap(data,l,r); W)2p@j59A  
return l; p!7FpxZY  
} 2d #1=+V  
Oi'5ytsES  
} nbD*x|  
mb TEp*H  
改进后的快速排序: QL&ZjSN  
Ys!82M$g  
package org.rut.util.algorithm.support; %COX7gV  
wr/"yQA]  
import org.rut.util.algorithm.SortUtil; RQ'9m^  
 4iazNl#  
/** x:NY\._  
* @author treeroot _~l5u8{^6  
* @since 2006-2-2 OUPUixz2Z  
* @version 1.0 "Y =;.:qe  
*/ S"bg9o  
public class ImprovedQuickSort implements SortUtil.Sort { X; \+<LE  
3=P]x ;[ba  
private static int MAX_STACK_SIZE=4096; 'j8:vq^d  
private static int THRESHOLD=10; '6iEMg&3  
/* (non-Javadoc) S}m)OmrmA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m<T%Rb4?@  
*/ i/;\7n  
public void sort(int[] data) { Db}j?ik/  
int[] stack=new int[MAX_STACK_SIZE]; n`B:;2X,  
sk<3`x+  
int top=-1; /$xU  
int pivot; P:K5",)  
int pivotIndex,l,r; `_Zg3_K.dS  
36&e.3/#  
stack[++top]=0; q.^;!f1  
stack[++top]=data.length-1; ^+>laOzC`8  
i4Q@K,$  
while(top>0){ j ?3wvw6T  
int j=stack[top--]; hP%M?MKC  
int i=stack[top--]; 6EoMt@7g  
ed{ -/l~j  
pivotIndex=(i+j)/2; "yy5F>0Wt  
pivot=data[pivotIndex]; B?gOHG*vd>  
m/@wh a  
SortUtil.swap(data,pivotIndex,j); t:x\kp  
iJ)_RSFK  
file://partition \$~|ZwV{  
l=i-1; Fc)@,/R"v  
r=j; R6<X%*&%  
do{ }^ ~F|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7FP*oN?  
SortUtil.swap(data,l,r); b4%??"&<Y  
} P+ 3G~Sr  
while(l SortUtil.swap(data,l,r); eH'av}  
SortUtil.swap(data,l,j); t9GR69v:?  
oz\!V*CtK  
if((l-i)>THRESHOLD){ c)6m$5]  
stack[++top]=i; s0TORl6Z|  
stack[++top]=l-1; *2>&"B09`  
} Y #ap*  
if((j-l)>THRESHOLD){ -lr vKrt7  
stack[++top]=l+1; kf\PioD8  
stack[++top]=j; niMsQ  
} ^  glri$m  
5 Aw"B  
} {K~'K+TPu  
file://new InsertSort().sort(data); b i',j0B  
insertSort(data); U#7#aeI  
} {Y(zd[  
/** "=HA Y  
* @param data <yV"6/l 0  
*/ XAD- 'i  
private void insertSort(int[] data) { G{As,`{  
int temp; H `XUJh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); //up5R_nx  
} ~TF:.8  
} gmUz9P(  
} OR P\b  
Fk&c=V;SU  
} ].avItg  
hk;5w{t}}  
归并排序: f=+mIZ  
nUaJzPl  
package org.rut.util.algorithm.support; xWH.^o,"  
v4!VrI  
import org.rut.util.algorithm.SortUtil; }`@vF|2L  
&N$<e(K  
/** LRxZcxmy  
* @author treeroot B6+khuG(  
* @since 2006-2-2 RT4x\&q  
* @version 1.0 x`eo"5.$  
*/ J/`<!$<c  
public class MergeSort implements SortUtil.Sort{ -u+vJ6EY  
8L=HW G!1  
/* (non-Javadoc) .fqN|[>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nAAs{  
*/ LtO!umM  
public void sort(int[] data) { @,j*wnR  
int[] temp=new int[data.length]; ZoW?nxY  
mergeSort(data,temp,0,data.length-1); VcE:G#]5  
} P7bMIe  
98c(<  
private void mergeSort(int[] data,int[] temp,int l,int r){ )th<,Lo3#  
int mid=(l+r)/2; R{`(c/%8  
if(l==r) return ; =osk+uzzG  
mergeSort(data,temp,l,mid); biD$qg  
mergeSort(data,temp,mid+1,r); )2KF}{  
for(int i=l;i<=r;i++){ aH(J,XY  
temp=data; wYXQlxdy  
} `6(S^P  
int i1=l; w>&aEv/f  
int i2=mid+1;  M mj;-u  
for(int cur=l;cur<=r;cur++){ G^|:N[>B  
if(i1==mid+1) 9 RgVK{F  
data[cur]=temp[i2++]; tmYz R%i  
else if(i2>r) GT.,  
data[cur]=temp[i1++]; #powub  
else if(temp[i1] data[cur]=temp[i1++]; yx8z4*]kH  
else ;\dBfP  
data[cur]=temp[i2++];  :A_@,Q  
} {%5eMyF#  
} 2DDtu[}  
T@B/xAq5!  
}  @tnz]^V  
:uS\3toj  
改进后的归并排序: l}|%5.5-  
Ms#M+[a  
package org.rut.util.algorithm.support; !;v|'I  
a$OE0zn`  
import org.rut.util.algorithm.SortUtil; R$<&ie6UQ  
'3tCH)s  
/** M#6W(|V/  
* @author treeroot 1<@W6@]  
* @since 2006-2-2 7M~K,E(7~  
* @version 1.0 `cUl7 'j  
*/ lIS-4QX1  
public class ImprovedMergeSort implements SortUtil.Sort { :J@ gmY:C  
7t0=[i  
private static final int THRESHOLD = 10; Qx#"q'2  
'@KEi%-^>  
/* 9wwqcx)3(  
* (non-Javadoc) B%b4v  
* L|xbR#v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }@+0/W?\.  
*/ :U%W%  
public void sort(int[] data) { VA_PvL.9  
int[] temp=new int[data.length]; dn+KH+v  
mergeSort(data,temp,0,data.length-1); \V8PhO;j  
} hx%v+/  
m}t`FsB.  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,!y$qVg'\f  
int i, j, k; ~Ea} /Au  
int mid = (l + r) / 2; $a"Oc   
if (l == r) )9`qG:b'  
return; $|@@Qk/T  
if ((mid - l) >= THRESHOLD) d.d/<  
mergeSort(data, temp, l, mid); ,/F~ Y&1I  
else IueFx u  
insertSort(data, l, mid - l + 1); vMH  
if ((r - mid) > THRESHOLD) b9HtR-iR;  
mergeSort(data, temp, mid + 1, r);  w``ST  
else U$ElV]N  
insertSort(data, mid + 1, r - mid); /]Md~=yNp  
:>f )g  
for (i = l; i <= mid; i++) { #a,PZDaE  
temp = data; joAv{Tc  
} R"t,xM  
for (j = 1; j <= r - mid; j++) { rcG"o\g@+  
temp[r - j + 1] = data[j + mid]; D'PI1 0t  
} 8^1 Te m  
int a = temp[l]; 08\, <9  
int b = temp[r]; V5>B])yQ  
for (i = l, j = r, k = l; k <= r; k++) { Flm%T-Dl  
if (a < b) { Vv=. -&'  
data[k] = temp[i++]; y/7\?qfTk  
a = temp; S g![Lsj  
} else { #r\4sVg  
data[k] = temp[j--]; A]oV"`f  
b = temp[j]; p6Gy ,C.  
} J<h $ wM  
} rw JIx|(  
} wJo}!{bN  
;$wVu|&  
/** 2uW; xfeY  
* @param data 3;A)W18]  
* @param l K Z91-  
* @param i ?NsW|w_  
*/ d/kv|$XW  
private void insertSort(int[] data, int start, int len) { _A9AEi'.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +\ .Lp 5  
} U!\.]jfS  
} e6$WQd`O  
} r[iflBP  
} h3 }OX{k  
I,vJbvvl!  
堆排序: `b7t4d*  
ENs&RZ;  
package org.rut.util.algorithm.support; Lk}J8 V^2  
+',S]Edx  
import org.rut.util.algorithm.SortUtil; FWgpnI\X|{  
8'io$ 6d=  
/** RMu~l@  
* @author treeroot JP [K;/  
* @since 2006-2-2 ,w4V?>l  
* @version 1.0 R$[vm6T?  
*/ `Eo.v#<  
public class HeapSort implements SortUtil.Sort{ g (CI;f}y  
,R* ]>'  
/* (non-Javadoc) I:1C8*/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .|i.Cq8  
*/ [5Mr@f4I  
public void sort(int[] data) { Q sCheHP  
MaxHeap h=new MaxHeap(); $5%SNzzl  
h.init(data);  S9FE  
for(int i=0;i h.remove(); Y O}<Ytx  
System.arraycopy(h.queue,1,data,0,data.length); M@v.c; Lt  
} T!)(Dv8@F  
E""bTz@  
private static class MaxHeap{ P8/0H(,  
z[qDkL  
void init(int[] data){ Yufc{M00  
this.queue=new int[data.length+1]; a~y'RyA  
for(int i=0;i queue[++size]=data; 2.%ITB  
fixUp(size); t&e{_|i#+  
} p947w,1![  
} 5 #E`=C%  
]Gq !`O1  
private int size=0; 88wa7i*  
3eQ&F~S  
private int[] queue; -]M5wb2,  
LyFN.2qw  
public int get() { Qj3EXb  
return queue[1]; <x>M o   
} ds[|   
OYn}5RN  
public void remove() { /hyN;.hpOO  
SortUtil.swap(queue,1,size--); )bscBj@  
fixDown(1); T{[=oH+  
} $*=<Yw4  
file://fixdown h>m"GpF x  
private void fixDown(int k) { ge8ZsaiU  
int j; draN0v f  
while ((j = k << 1) <= size) { a<bwzX|.  
if (j < size %26amp;%26amp; queue[j] j++; kc&U'&RgY  
if (queue[k]>queue[j]) file://不用交换 S;`A{Mow  
break; .U]-j\  
SortUtil.swap(queue,j,k); v):Or'$~M  
k = j; Y`a3tO=Pd  
} r3UUlR/Do  
} TAW/zpps$  
private void fixUp(int k) { I9ep`X6Y  
while (k > 1) { o|["SYIf  
int j = k >> 1; @b2aNS<T  
if (queue[j]>queue[k]) 8FY?!C  
break; H"WprHe  
SortUtil.swap(queue,j,k); P+/e2Y  
k = j;  Mb~F%_  
} [ v*ju!  
} s!$7(Q86R  
P-"y3 ZE=  
} $-sHWYZ  
-ZLJeY L  
} & >fQp(f  
97!;.f-  
SortUtil: Ds:'Lb  
h~zT ydnH  
package org.rut.util.algorithm; *J`O"a  
?&1!vz  
import org.rut.util.algorithm.support.BubbleSort; TOQP'/   
import org.rut.util.algorithm.support.HeapSort; /mzlH  
import org.rut.util.algorithm.support.ImprovedMergeSort; Qt<&WB fn  
import org.rut.util.algorithm.support.ImprovedQuickSort; '^UI,"Ti  
import org.rut.util.algorithm.support.InsertSort; qUb&   
import org.rut.util.algorithm.support.MergeSort; 7-fb.V9  
import org.rut.util.algorithm.support.QuickSort; :d'8x  
import org.rut.util.algorithm.support.SelectionSort; L ~N460  
import org.rut.util.algorithm.support.ShellSort; d%n-[ZL  
' S/gmn  
/** IJcsmNWm  
* @author treeroot LZxNAua  
* @since 2006-2-2 4^o^F-k'  
* @version 1.0 .(k|wX[Fu~  
*/ { 2f-8Z&>  
public class SortUtil { FfT`;j  
public final static int INSERT = 1; '!B&:X)  
public final static int BUBBLE = 2; +ami?#Sz*;  
public final static int SELECTION = 3; ~((O8@}J  
public final static int SHELL = 4; KF:78C  
public final static int QUICK = 5; l+0oS'`V*L  
public final static int IMPROVED_QUICK = 6; )zDCu`  
public final static int MERGE = 7; }i&/ G +_  
public final static int IMPROVED_MERGE = 8; [j+sC*  
public final static int HEAP = 9; (KZ{^X?a  
5*u+q2\F  
public static void sort(int[] data) { Y(Hs#Kn{  
sort(data, IMPROVED_QUICK); SQ+Gvq%Q]  
} Z6MO^_m2  
private static String[] name={ Dk51z@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SiN0OB  
}; M x" \5i  
@gK?\URoT  
private static Sort[] impl=new Sort[]{ XC#oB~K'  
new InsertSort(), ]JQULE)  
new BubbleSort(), dft!lBN  
new SelectionSort(),  6(R<{{  
new ShellSort(), t\O16O7S  
new QuickSort(), o}p n0KO,  
new ImprovedQuickSort(), V0a3<6@4  
new MergeSort(), :NTO03F7v  
new ImprovedMergeSort(), p!AAFmc  
new HeapSort() (A.C]hD  
}; <(#ej4ar,  
XW92gI<O  
public static String toString(int algorithm){ 0jWVp- y  
return name[algorithm-1]; \cM2k-  
} %^6F_F_jS  
SSzIih@u  
public static void sort(int[] data, int algorithm) { _7y[B&g[r  
impl[algorithm-1].sort(data); ;8 lfOMf  
} +&H4m=D-#a  
es0hm2HT3  
public static interface Sort { [{/jI\?v  
public void sort(int[] data); n~Lt\K:  
} 3Tm+g2w2V8  
m.0*NW  
public static void swap(int[] data, int i, int j) { j![\& z  
int temp = data; |;{6& S  
data = data[j]; 1G`Pmh@  
data[j] = temp; 3o/[t  
} dqcL]e  
} L-&\\{ X  
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