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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。 W]zwghxH  
插入排序: H?{ MRe  
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package org.rut.util.algorithm.support; 8i[LR#D)  
. pP7"E4]  
import org.rut.util.algorithm.SortUtil; 6]ZO'Nwo  
/** \Z'/+}^h  
* @author treeroot #9,=Owup  
* @since 2006-2-2 4 4`WYK l  
* @version 1.0 R[Nbtbv9Q  
*/ =f `=@]  
public class InsertSort implements SortUtil.Sort{ E-F5y  
uY]T:UVk  
/* (non-Javadoc) (Vap7.6;_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HU9p !I.  
*/ }^9paU  
public void sort(int[] data) { 7 Kjj?~RA  
int temp; x?=B\8m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7UDq/:}Fo  
} Km"&mT $  
} I=5dYq4 l  
} \HD-vINV;  
7H#2WFQ7  
} H`gb}?9R  
sZwZWD'  
冒泡排序: 5zVQ;;9  
{#9,j]<  
package org.rut.util.algorithm.support; uQ^hV%|"  
F9O`HFVK  
import org.rut.util.algorithm.SortUtil; D:)~%wu Lt  
o?y"]RCM  
/** :~er h}~ps  
* @author treeroot gCL{Cw  
* @since 2006-2-2 <r3Jf}%tT  
* @version 1.0 K( z[ }  
*/ MH FaSl  
public class BubbleSort implements SortUtil.Sort{ 3sb 5E]P  
vzcz<i )  
/* (non-Javadoc) {lMqcK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]LVnt-q  
*/ -!~vA+jw1  
public void sort(int[] data) { m/{Y]D{2  
int temp; *F|+2?a:$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W }Zb~[,  
if(data[j] SortUtil.swap(data,j,j-1); !-ZP*V3}h  
} phmVkV2a;#  
} u uSHCp  
} G:DSWW}  
} B>@D,)/bT5  
[aHlu[,  
} RQ|?Ce",  
!?6.!2  
选择排序: NZfd_? 3  
{ Hr>X  
package org.rut.util.algorithm.support; 2^J/6R$  
zu<>"5}]  
import org.rut.util.algorithm.SortUtil; %UBPoq  
J+i X,X  
/** hwp/jO:7\  
* @author treeroot ~T7\8K+ $  
* @since 2006-2-2 _Qg{ ;  
* @version 1.0 F=: c5z  
*/ $82zyq  
public class SelectionSort implements SortUtil.Sort { >j- b5g"g  
],AbcTX  
/* 'z~KTDX  
* (non-Javadoc) dX 0x Kk%#  
* 0S_Ra+e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K)Ge  
*/ GajI\_o  
public void sort(int[] data) { 3}yraX6r!  
int temp; h~ZNHSP:  
for (int i = 0; i < data.length; i++) { "~Us#4>  
int lowIndex = i; 0OEtU5lf`y  
for (int j = data.length - 1; j > i; j--) { 7F~xq#Wi#  
if (data[j] < data[lowIndex]) { j~.u>4  
lowIndex = j; jWhD5k@v  
} yG4MUf6  
} F; 0Dp  
SortUtil.swap(data,i,lowIndex); #|q;t   
} ,rXW`7!2  
} bu;vpNa  
u$\Tg3du2  
} ~O8] 3+U  
y^ 3,X_0  
Shell排序: R4yJ.f  
-^0KE/  
package org.rut.util.algorithm.support; =qan%=0"h  
Of!|,2`(  
import org.rut.util.algorithm.SortUtil; 7;~ 2e  
oUCVd}wH  
/** RBPYG u'6B  
* @author treeroot 8`6 LMQ  
* @since 2006-2-2 xR _DY'z  
* @version 1.0 RR8U Cv  
*/ X9SJ~n  
public class ShellSort implements SortUtil.Sort{ aL{EkiR  
5t TLMZ`o  
/* (non-Javadoc) j_hjCQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D=<t;+|  
*/ - f+CyhR"*  
public void sort(int[] data) { 2~+'vi  
for(int i=data.length/2;i>2;i/=2){ Gl=@>Dc%  
for(int j=0;j insertSort(data,j,i); &MBOAHhze  
} A-}PpH~.Z  
} ~rp.jd 0l  
insertSort(data,0,1); ">03~:oA  
} ]rKH|i  
nvw NjN  
/** ;9 lqSv/6  
* @param data I):m6y@  
* @param j l^)o'YS y  
* @param i &IxxDvP3k  
*/ `>$g y/N  
private void insertSort(int[] data, int start, int inc) { `Nc`xO?  
int temp; &?&'"c{;m  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (8+.#1!*  
}  zgZi  
} 3XMBu*  
} Ov F8&*A  
}S1Z>ZA5  
} ytuWT,u  
H!Fr("6}  
快速排序: })h'""i&xn  
N^)<)?  
package org.rut.util.algorithm.support; btJ,dpir  
vy>];!Cu  
import org.rut.util.algorithm.SortUtil; wR`w@ 5,d  
^d5gz0d  
/** f]O5V$!RuE  
* @author treeroot $_%2D3-;D  
* @since 2006-2-2 !;BZ#tF&  
* @version 1.0 G FSlYG  
*/ RBMMXJj  
public class QuickSort implements SortUtil.Sort{ 7zz(#  
8Iqk%n~(  
/* (non-Javadoc) f z/?=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,4h! "c  
*/ ?(|TP^  
public void sort(int[] data) { a!SR"3 k  
quickSort(data,0,data.length-1); &Nj:XX;X  
} s~IA},F,\  
private void quickSort(int[] data,int i,int j){ +qu@dU0\`|  
int pivotIndex=(i+j)/2; mYsuNTx!.  
file://swap [5}cU{M  
SortUtil.swap(data,pivotIndex,j); 6w:g77SH)%  
<Bob#Tf ~  
int k=partition(data,i-1,j,data[j]); oK(W)[u  
SortUtil.swap(data,k,j); VygXhh^7\  
if((k-i)>1) quickSort(data,i,k-1); GT1 X  
if((j-k)>1) quickSort(data,k+1,j); ?$`1%Y9  
^| a&%wxA  
}  5Fl  
/** 2yQ;lQ`  
* @param data }AeE|RNc  
* @param i T{v<  
* @param j ho SU`X  
* @return o+6^|RP  
*/ l yLK$B?/  
private int partition(int[] data, int l, int r,int pivot) { K_w0+oY a  
do{ iX9[Q0g=oQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =."WvBKg  
SortUtil.swap(data,l,r); jT wM<?  
} W0r5D9k  
while(l SortUtil.swap(data,l,r); N6 }i>";_;  
return l; `'k's]Y  
} =w>>7u$4  
b\uB  
} !?>p]0*<  
J W yoh|  
改进后的快速排序: `a1R "A  
TYLl_nGr  
package org.rut.util.algorithm.support; #}]il0d  
'/"M02a  
import org.rut.util.algorithm.SortUtil; Tk@g9\6O9  
#p9z#kin  
/** }JTgj  
* @author treeroot 2W-NCE%K)T  
* @since 2006-2-2 ]e3}9.  
* @version 1.0 +`vZg^_c`  
*/ qZ]VS/5A  
public class ImprovedQuickSort implements SortUtil.Sort { (j8,n<o  
0dX=  
private static int MAX_STACK_SIZE=4096; -"^WDs  
private static int THRESHOLD=10; OQb9ijLeK  
/* (non-Javadoc) ;cHI3V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fyoB]{$p8  
*/ aZ:?(u]  
public void sort(int[] data) { 2 n+XML  
int[] stack=new int[MAX_STACK_SIZE]; (/P&;?j  
ke6cZV5w  
int top=-1; hy`)]>9z~  
int pivot; oX]1>#5UMg  
int pivotIndex,l,r; |"E9DD]{  
YGO7lar  
stack[++top]=0; r#w_=h)  
stack[++top]=data.length-1; )aA9z(x  
!5 :[XvI#  
while(top>0){ 5qB=@O]|G;  
int j=stack[top--]; u#k6v\/  
int i=stack[top--]; YbBH6R Zr  
dGW7,B~  
pivotIndex=(i+j)/2; u4^"E+y^S  
pivot=data[pivotIndex]; 8}E(UsTa  
(c|qX-%rC  
SortUtil.swap(data,pivotIndex,j); O)Dw<j)  
$U.'K!B  
file://partition *t*&Q /W  
l=i-1; zMqEMx9  
r=j; DczF0Ow  
do{ ]mT} \b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B]}V$*$ \?  
SortUtil.swap(data,l,r); M4PUJZ]  
} iBW6<2@oZF  
while(l SortUtil.swap(data,l,r); RvZ-w$E&?  
SortUtil.swap(data,l,j); T[=cKYp8\  
Qi]Z)v{^  
if((l-i)>THRESHOLD){ cTx/Y&\9  
stack[++top]=i; 6 &Aa b56  
stack[++top]=l-1; o[W3/  
} g-gBg\y{v  
if((j-l)>THRESHOLD){ ?v~3zHK  
stack[++top]=l+1; q;~>h  
stack[++top]=j; +( (31l  
} Yf`.Cq_:  
D ;I;,Z  
} __%E!*m"<_  
file://new InsertSort().sort(data); \k-juF80  
insertSort(data); iC2nHZ*,  
} z(68^-V=:  
/** Ui;s.f  
* @param data 5&Kn #  
*/ ho$%7mc  
private void insertSort(int[] data) { G QBN-Qv  
int temp; jz:c)C&/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,T[ +omo  
} g'7hc~=  
} { 4{{;   
} RYaof W  
]7 mSM  
} ~,-O  
^#nWgo7{7  
归并排序: )#Bfd(F  
}@6 %yR  
package org.rut.util.algorithm.support; tX}S[jdq  
9?,.zc^  
import org.rut.util.algorithm.SortUtil; U  {!{5l:  
M 7$4KFNp  
/** 4ux5G`oL  
* @author treeroot o^6j(~  
* @since 2006-2-2  IomJo  
* @version 1.0 DQnWLC"u  
*/ 6u;(R0n  
public class MergeSort implements SortUtil.Sort{ n9-[z2n  
HNT8~s.2  
/* (non-Javadoc) ') y~d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zD-8#H35X"  
*/ 'A2"&6m)28  
public void sort(int[] data) { kn|l3+  
int[] temp=new int[data.length]; 3vD,hL`&  
mergeSort(data,temp,0,data.length-1); 6LQO>k  
} ;mlIWn  
[nD4\x+  
private void mergeSort(int[] data,int[] temp,int l,int r){ }dl(9H=4  
int mid=(l+r)/2; j-|0&X1C  
if(l==r) return ; #::vMnT  
mergeSort(data,temp,l,mid); Jl ?Q}SB  
mergeSort(data,temp,mid+1,r); u;}B4Rx  
for(int i=l;i<=r;i++){ s'4p+eJ  
temp=data; )>p6h]]a  
} h]P$L>  
int i1=l;  cf!R  
int i2=mid+1; it vdzPO  
for(int cur=l;cur<=r;cur++){ iKY&gnu"  
if(i1==mid+1) wv-8\)oA  
data[cur]=temp[i2++]; `<d>C}9  
else if(i2>r) Pme?`YO$x  
data[cur]=temp[i1++]; i-b7  
else if(temp[i1] data[cur]=temp[i1++]; N\$wpDI~  
else =T]OYk  
data[cur]=temp[i2++]; p<e~x/@m*  
} Efl+`6`J  
} lR!$+atW  
a=dN.OB}F7  
} [4e5(!e  
DBRJtU!5x  
改进后的归并排序: "Wp<^ssMo  
V^i3:'  
package org.rut.util.algorithm.support; !A o?bs'  
qfU3Cwy  
import org.rut.util.algorithm.SortUtil; |z%,W/Ef  
S)%x22sqf  
/** DV l: s  
* @author treeroot _?ZT[t<  
* @since 2006-2-2 :*1w;>o)n  
* @version 1.0 T2{+fR v N  
*/ e j9G[  
public class ImprovedMergeSort implements SortUtil.Sort { NL 37Y{b  
j^.P=;  
private static final int THRESHOLD = 10; |=POV]K  
(Wn'.|^%  
/* 6_Kz}PQ  
* (non-Javadoc) 1yu!:8=ee  
* UL/>t}AG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) heWb(E&  
*/ DYS(ZY)4  
public void sort(int[] data) { >@"j9  
int[] temp=new int[data.length]; Gu= Rf`o  
mergeSort(data,temp,0,data.length-1); qU}DOL|  
} Lj H];=R  
P*SXfb"HC  
private void mergeSort(int[] data, int[] temp, int l, int r) { kBzzi^cl  
int i, j, k; o;.-I[9h]  
int mid = (l + r) / 2; u2t<auE9^  
if (l == r) ?P5D!b:(  
return; D1f=f88/}  
if ((mid - l) >= THRESHOLD) md0=6< }P  
mergeSort(data, temp, l, mid); B:4u 2/!5  
else HZT;7<  
insertSort(data, l, mid - l + 1); -cKR15  
if ((r - mid) > THRESHOLD) ",}VB8K  
mergeSort(data, temp, mid + 1, r); %_ ~[+ ~#  
else t]x HM  
insertSort(data, mid + 1, r - mid); CqoL5qt  
$3L7R  
for (i = l; i <= mid; i++) { MWl@smRh  
temp = data; 4Qd g t*  
} [V2l&ZUni  
for (j = 1; j <= r - mid; j++) { ^{s)`j'I*  
temp[r - j + 1] = data[j + mid]; "rXGXQu  
} i`Tne3)  
int a = temp[l]; s+[=nau('w  
int b = temp[r]; '/j`j>'!^  
for (i = l, j = r, k = l; k <= r; k++) { 1Jahu!c?  
if (a < b) { E8xXr>j>#  
data[k] = temp[i++]; 7@sWT<P  
a = temp; qSQjAo4t@  
} else { Cpj_mMtu  
data[k] = temp[j--]; C.@zVt  
b = temp[j]; Dihk8qJ/6  
} Cxh9rUe.  
} \R<yja  
} DGU$3w  
;02lmpBj  
/** .Ybm27Dk  
* @param data r[gV`khka  
* @param l B4.hJZ5  
* @param i 4uz\Me(  
*/ L]p:gI{m  
private void insertSort(int[] data, int start, int len) { k @ Hu0x  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `mMD e  
} :>,d$f^tqE  
} M6e"4Gh  
} H1l' \  
} TqlUe@E  
+@!9&5S A  
堆排序: / g&mDYV|  
I@hC$o  
package org.rut.util.algorithm.support; I[&!\Me[+w  
mV;7SBoT  
import org.rut.util.algorithm.SortUtil; nBNZ@nD  
z` sH  
/** 9oaq%Sf  
* @author treeroot Tv(s?T6f  
* @since 2006-2-2 }x%"Oq|2]x  
* @version 1.0 -<|E bh d3  
*/ o?b"B+#  
public class HeapSort implements SortUtil.Sort{ i}q6^;uTF  
6 Fm.^9@  
/* (non-Javadoc) _z}d yp"I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]AN)M>  
*/ I\[*vgjm3G  
public void sort(int[] data) { UP,(zKTA  
MaxHeap h=new MaxHeap(); [*1c.&%(  
h.init(data); K46mE   
for(int i=0;i h.remove(); ;B7>/q;g  
System.arraycopy(h.queue,1,data,0,data.length); x.d9mjLN8m  
} /WM : Bj   
87*R#((  
private static class MaxHeap{ s&c^Wr  
\+5L. Q  
void init(int[] data){ #|'8O  
this.queue=new int[data.length+1]; 2[W Qq)\  
for(int i=0;i queue[++size]=data; K[ylyQ1  
fixUp(size); oVLz7Y[JE  
} 0a(*/u  
} {xOu*8J  
B$7lL  
private int size=0; eqLETo@} *  
ntjUnd&v\  
private int[] queue; +[cm  
oiklRf  
public int get() { K<V(h#(.@  
return queue[1]; F2XXvxG  
} 0m?ul%=  
-,Q<*)q{  
public void remove() { t[#`%$% '  
SortUtil.swap(queue,1,size--); 3lKIEPf6r  
fixDown(1); $i =-A  
} &jj\-;=~Ho  
file://fixdown S;CT:kG6Y{  
private void fixDown(int k) { ,,@_r&f:  
int j; +|o -lb  
while ((j = k << 1) <= size) { 0w OgQ n  
if (j < size %26amp;%26amp; queue[j] j++; dso\+s  
if (queue[k]>queue[j]) file://不用交换 zO!`sPP  
break; A]R"C:o  
SortUtil.swap(queue,j,k); BL]^+KnP  
k = j; S?D2`b  
} ^%\p; yhL  
} RI%* 5lM8;  
private void fixUp(int k) { P~?u2,.E[  
while (k > 1) { /Fk0j_b  
int j = k >> 1; 'W$qi@f_s  
if (queue[j]>queue[k]) (L~3nN;rr  
break; NeNKOW#X  
SortUtil.swap(queue,j,k); 2*Gl|@~N  
k = j; (spX3n%p  
} XLM 9+L  
} S:DB%V3  
0`OqD d  
} 4}8Xoywi1  
@UvjJ  
} $bD!./fl  
[J:vSt  
SortUtil: !WbQ`]uN/#  
Th"7p:SE?  
package org.rut.util.algorithm; r"rEVx#1=  
,E/vHI8  
import org.rut.util.algorithm.support.BubbleSort; !&#CEF@J  
import org.rut.util.algorithm.support.HeapSort; xv1$,|^ts  
import org.rut.util.algorithm.support.ImprovedMergeSort; $'e.bh  
import org.rut.util.algorithm.support.ImprovedQuickSort; QO|ODW+D  
import org.rut.util.algorithm.support.InsertSort; ujwI4oj"c  
import org.rut.util.algorithm.support.MergeSort; "ebn0<cZ  
import org.rut.util.algorithm.support.QuickSort; F.AO  
import org.rut.util.algorithm.support.SelectionSort; B[y1RI|9  
import org.rut.util.algorithm.support.ShellSort; K5k,47"  
/oWB7l&  
/** p-ry{"XA  
* @author treeroot ]QpR>b=[j  
* @since 2006-2-2 :?lSa6de  
* @version 1.0 Wlt shZo  
*/ F=# zy#@.  
public class SortUtil { #`?uV)(  
public final static int INSERT = 1; Xf#uK\f  
public final static int BUBBLE = 2; i3f/{D/  
public final static int SELECTION = 3; J,jl(=G  
public final static int SHELL = 4; S$V'_  
public final static int QUICK = 5; -[+FVvS  
public final static int IMPROVED_QUICK = 6;  eYS  
public final static int MERGE = 7; O:D`6U+0  
public final static int IMPROVED_MERGE = 8; ~PS%^zxyn  
public final static int HEAP = 9; f *)t<1f  
w/ZV9"BhE  
public static void sort(int[] data) { mQ1QJ_;  
sort(data, IMPROVED_QUICK); > a^H7kp  
} M~3(4,  
private static String[] name={ ]>x674H  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '\ 6.GP  
}; h j9 b Mj  
eeuAo&L&  
private static Sort[] impl=new Sort[]{ G.c s-f  
new InsertSort(), X~W5Z(w(O  
new BubbleSort(), nEs l  
new SelectionSort(), g,x$z~zU{  
new ShellSort(), w6Ue5Ix,!  
new QuickSort(), g[!sGa &  
new ImprovedQuickSort(), '?Hy"5gUA  
new MergeSort(), M}us^t*  
new ImprovedMergeSort(), qOkw6jfluh  
new HeapSort() q-p4k`]  
}; >Utn[']~  
D|UDLaz~  
public static String toString(int algorithm){ <:/V`b3a  
return name[algorithm-1]; Ip?Ueaei  
} <o p !dS  
o1YhYA  
public static void sort(int[] data, int algorithm) { /n(0nU[  
impl[algorithm-1].sort(data); n j1 cqh  
} mnG\UK,k  
RkC?(p  
public static interface Sort { aiUn bP  
public void sort(int[] data); `\#Q r|GC  
} cjH ~H8  
ijC;"j/(  
public static void swap(int[] data, int i, int j) { OB5{EILej  
int temp = data;  vUJb-  
data = data[j]; {:fyz#>>^  
data[j] = temp; uy7)9w  
} V@T G"YF  
} sE]eIN  
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