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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。 JGZ,5RTq4-  
插入排序: MoA2Cp;8X  
3y>.1  
package org.rut.util.algorithm.support; u*[,W-R&  
>H@ dgb  
import org.rut.util.algorithm.SortUtil; }M f}gCEW  
/** I"3Qdi  
* @author treeroot H;,cUb  
* @since 2006-2-2 ,*0>CBJvv  
* @version 1.0 W<;i~W  
*/ IDzP<u8v  
public class InsertSort implements SortUtil.Sort{ O:q}<ljp  
1o o'\  
/* (non-Javadoc) 3P/T`)V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r4NI(\gU  
*/ u7@|fND 7  
public void sort(int[] data) { %'`Dd  
int temp; ksY^w+>(!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -w 2!k  
} !'ajpK  
} 5@j?7%_8  
} U*/  
a#!Vi93  
} <PW*vo9v  
| x{:GWq  
冒泡排序: m&,d8Gss^  
qYIBP?`g  
package org.rut.util.algorithm.support; +d\"n  
1SkGG0 W  
import org.rut.util.algorithm.SortUtil; jD_(im5  
4cJ^L <  
/** 9`.b   
* @author treeroot 8nES=<rz  
* @since 2006-2-2 6luCi$bL  
* @version 1.0 )QaJYC^+  
*/ m*P~X*St  
public class BubbleSort implements SortUtil.Sort{ ?`\<t$M  
:<ujk  
/* (non-Javadoc) \UJ:PW$7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o&*1Mx<+  
*/ wx(| $2{h  
public void sort(int[] data) { NNutpA}s  
int temp; 3-32q)8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ UOF5&>MLb  
if(data[j] SortUtil.swap(data,j,j-1); S~YrXQ{_>-  
} nP'ab_>b  
} (5-"5<-@R  
} `;*=2M<c  
} XnWr~h{b  
]9zc[_ !  
} a>sUq["  
`Lm ArW:  
选择排序: I=f1kr pR  
4OCz:t  
package org.rut.util.algorithm.support; Ew4DumI  
RZ|s[b U  
import org.rut.util.algorithm.SortUtil; @z dmB~C  
$+JaEF`8  
/** VbBZ\`b  
* @author treeroot :Iwe>;}  
* @since 2006-2-2 aU4'_%Y@  
* @version 1.0 ICq;jfML  
*/ PKdM-R'Z  
public class SelectionSort implements SortUtil.Sort { bvEk.~tC'  
*KxV;H8/  
/* }E8 Y,;fTD  
* (non-Javadoc) Jd1eOeS  
* D6bCC; h=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bL *;N3#E  
*/ k>VP<Zm13  
public void sort(int[] data) { iv#9{T  
int temp; ~<v`&Gm?"  
for (int i = 0; i < data.length; i++) { mg'-]>$$]  
int lowIndex = i; 3m7$$ N|  
for (int j = data.length - 1; j > i; j--) { _PNU*E%s<  
if (data[j] < data[lowIndex]) { O|7q,bEm^  
lowIndex = j; Vize0fsD  
} uT]_pKm  
} FD_0FMZ9,  
SortUtil.swap(data,i,lowIndex); Fhxg^  
} ?\$77k  
} {!^HG+  
U@f3V8CPy  
} ?3KI}'}EM  
jGI!}4_  
Shell排序: Wf: AMxDm  
'-w G  
package org.rut.util.algorithm.support; J5J3%6I  
EF)kYz!@  
import org.rut.util.algorithm.SortUtil; c~R ElL  
y*Ex5N~JC  
/** PK3T@Qv89  
* @author treeroot )4GfT  
* @since 2006-2-2 E6)FYz7x  
* @version 1.0 3w{ i5gGn  
*/ Y;&Cmi  
public class ShellSort implements SortUtil.Sort{ YqNhD6  
/8W}o/,s5  
/* (non-Javadoc) /^/'9}7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '|Q=J)  
*/ T'Jw\u>"R  
public void sort(int[] data) { >@ H:+0h-  
for(int i=data.length/2;i>2;i/=2){ V7rcnk#  
for(int j=0;j insertSort(data,j,i); @gxO%@@  
} V3@^bc!   
} y"@~5e477$  
insertSort(data,0,1); I|WBT  
} ]BAF  
&k1Ez  
/** )- 2^Jvc  
* @param data ZP%^.wxC  
* @param j 5^* d4[&+  
* @param i /jj}.X7yH  
*/ [&+wW  
private void insertSort(int[] data, int start, int inc) { p' /$)klt  
int temp; krz@1[w-j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hCr7%`  
} }s{zy:1O  
} >-)i_C2  
} S'3l<sY  
|:H[Y"$1;  
} T w"^I*B  
i"w$D{N  
快速排序: a |z{B b  
(x.K%QC)  
package org.rut.util.algorithm.support;  KsUsj3J  
_V8pDcY  
import org.rut.util.algorithm.SortUtil; 1Ll@ ocE  
/}M@ @W  
/** f0wQn09  
* @author treeroot uE5kL{Fv  
* @since 2006-2-2 rxa8X wo8  
* @version 1.0 _HGDqj L  
*/ hrcR"OZ~X  
public class QuickSort implements SortUtil.Sort{ )QI]b4[  
d>vGx  
/* (non-Javadoc) H,H'bd/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2@e<II2ha8  
*/ Itz_;+I.Mp  
public void sort(int[] data) { %f{kT<XHu  
quickSort(data,0,data.length-1); +;cw<9%0  
} Yj0Ss{Ep  
private void quickSort(int[] data,int i,int j){ Pi+,y  
int pivotIndex=(i+j)/2; U4LOe}Ny  
file://swap vRT1tOQ$  
SortUtil.swap(data,pivotIndex,j); e?Cbl'  
)C|>M'g@v  
int k=partition(data,i-1,j,data[j]); evszfCH'J  
SortUtil.swap(data,k,j); QKOo # 7  
if((k-i)>1) quickSort(data,i,k-1); nH T2M{R  
if((j-k)>1) quickSort(data,k+1,j); vkBngsS  
kTC6fNj[  
} dAAE2}e  
/** ?J<4IvL/  
* @param data X0U{9zP  
* @param i :Z=A,G  
* @param j EzG7RjW  
* @return IL>Gi`Y&  
*/ ~^VcTSY@<L  
private int partition(int[] data, int l, int r,int pivot) { TSuHY0. cp  
do{ O'idS`   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YtIJJH  
SortUtil.swap(data,l,r); <cepRjDn  
} urog.Q  
while(l SortUtil.swap(data,l,r); }"xC1<]  
return l; *;o=hM)Tp  
} :5CwRg  
*AxKV5[H  
} \:" s*-  
Bxm^Arc>  
改进后的快速排序: elP`5BuN  
40q8,M  
package org.rut.util.algorithm.support; U 2\{ ( y  
NO9Jre  
import org.rut.util.algorithm.SortUtil; ;o8cfD.z  
Xb;CY9&  
/** AK [9fxrE  
* @author treeroot ADHe! [6q  
* @since 2006-2-2 uMqo)J@s  
* @version 1.0 jRq>Sz{8  
*/ "=/XIM.  
public class ImprovedQuickSort implements SortUtil.Sort { 7i/?+|  
(mza&WF7  
private static int MAX_STACK_SIZE=4096; //6m2a  
private static int THRESHOLD=10; y4envjl 0  
/* (non-Javadoc) ~'T]B{.+J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C(?lp  
*/ `9 $?g|rB  
public void sort(int[] data) { ^M?uv{354  
int[] stack=new int[MAX_STACK_SIZE]; x$M[/ID0  
nGyY`wt&Rg  
int top=-1; 44_n5vp,T  
int pivot; M)3h 4yQ  
int pivotIndex,l,r; KQr=;O\T  
5(U.<  
stack[++top]=0; \6@}HFH  
stack[++top]=data.length-1; `CHgTkv  
GbZA3.J]yl  
while(top>0){ lYy0   
int j=stack[top--]; ]bS\*q0Zf(  
int i=stack[top--]; nC`=quM9  
0>.'w\,87B  
pivotIndex=(i+j)/2; )EcF[aO  
pivot=data[pivotIndex]; +%>L;'L ^X  
][_:{ N/  
SortUtil.swap(data,pivotIndex,j); 9$d (`-&9p  
w1s#8:  
file://partition ?|8H $1  
l=i-1; Z"E+ TX  
r=j; 2Jj`7VH>  
do{ du47la 3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tpCEWdn5  
SortUtil.swap(data,l,r); u,'c:RMV  
} F]Y Pq  
while(l SortUtil.swap(data,l,r); VSP[G ,J.  
SortUtil.swap(data,l,j); 2gFQHV  
J/ rQ42d  
if((l-i)>THRESHOLD){ uHwuw_eK`  
stack[++top]=i; My5X%)T>P  
stack[++top]=l-1; LFh(. }  
} FiFZM  
if((j-l)>THRESHOLD){ E>7%/TIl  
stack[++top]=l+1; E2dSOZS:)%  
stack[++top]=j; i&?~QQP`  
} n287@Y4Ru  
& f!!UZMt)  
} x&8?/BR  
file://new InsertSort().sort(data); ~%sDQt\S  
insertSort(data); OGae]O<  
} -8TJ~t%w4  
/**  T>LtN  
* @param data &os* @0h4  
*/ ]n!pn#Q  
private void insertSort(int[] data) { `d8$OC  
int temp; &, K;F'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]Q)TqwYF  
} 3EzI~Zsx  
} L- =^GNh  
} '3<YZWS  
l?#([(WM  
} _s=[z$EN&  
0 J ANj  
归并排序: V:l; 2rW  
0eb`9yM  
package org.rut.util.algorithm.support; *Jp>)>  
u#}zNz#C5  
import org.rut.util.algorithm.SortUtil; )DoY*'Cl  
t,RR\S  
/** ?{^T&<18t  
* @author treeroot ."=Bx2  
* @since 2006-2-2 =P2T&Gb  
* @version 1.0 Ak4iG2  
*/ tp0^%!*9  
public class MergeSort implements SortUtil.Sort{ _u.l|yR  
cL`l1:j\}  
/* (non-Javadoc) ..n-&(c32  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N-vr_4{g  
*/ #>!!#e!*  
public void sort(int[] data) { !m^WtF  
int[] temp=new int[data.length]; 6Lz&"C,`  
mergeSort(data,temp,0,data.length-1); H,zRmK6A%  
} Bv/v4(G5g  
znu?x|mV  
private void mergeSort(int[] data,int[] temp,int l,int r){ dyg1.n#M}  
int mid=(l+r)/2; jIuE1ve  
if(l==r) return ; k deJB-  
mergeSort(data,temp,l,mid); !5p 01]7  
mergeSort(data,temp,mid+1,r); 7(wY4T  
for(int i=l;i<=r;i++){ EP{y?+E2  
temp=data; 0R *!o\y  
} 1k "*@Z<  
int i1=l; <4Ujk8Zj  
int i2=mid+1; |ukEnjI`u  
for(int cur=l;cur<=r;cur++){ )8P<ZtEU  
if(i1==mid+1) ;.m"y-  
data[cur]=temp[i2++]; 5)EnOT"'  
else if(i2>r) JkpA \<  
data[cur]=temp[i1++]; K _y;<a]  
else if(temp[i1] data[cur]=temp[i1++]; [j:%O|h  
else =SLJkw&w6  
data[cur]=temp[i2++]; %Wu3$b  
} IWKQU/l!  
} 9I.="b=J)  
Z=wLNmH  
} 6B|IbQ^  
t0hg!_$bq  
改进后的归并排序: "y5c)l(Rg  
=Ermh7,  
package org.rut.util.algorithm.support; x+^iEj`gk  
/SP^fB*y  
import org.rut.util.algorithm.SortUtil; dZ;cs c@xv  
5a4;d+  
/** et)A$'Q  
* @author treeroot E[ e ''  
* @since 2006-2-2 8Gs{Zfp!D  
* @version 1.0 t[0gN:s  
*/ ?l bK;Kv  
public class ImprovedMergeSort implements SortUtil.Sort { Rz%+E0  
|8V+(Vzl  
private static final int THRESHOLD = 10; \W #M]Q  
MheP@ [w|@  
/* s{hJ"lv:  
* (non-Javadoc) Z wIsEJz  
* 6XB9]it6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "EHwv2Hm>  
*/ oXb}6YC  
public void sort(int[] data) { {6v+ Dz>  
int[] temp=new int[data.length]; !a4pKN`qLY  
mergeSort(data,temp,0,data.length-1); S,qsCnz  
} _[IN9ZC2G  
WEWNFTI  
private void mergeSort(int[] data, int[] temp, int l, int r) { )I`B+c:  
int i, j, k; M(SH3~  
int mid = (l + r) / 2; @K2q*d  
if (l == r) #@ lLx?U  
return; D1x~d<j  
if ((mid - l) >= THRESHOLD) \$GlB+ iCx  
mergeSort(data, temp, l, mid); N(&,+KJ)  
else }!5"EL(L80  
insertSort(data, l, mid - l + 1); o'r?^ *W  
if ((r - mid) > THRESHOLD) -*+7-9A I  
mergeSort(data, temp, mid + 1, r); mWCY%o@  
else Q+Jzab  
insertSort(data, mid + 1, r - mid); 8 w^i  
\*a7DuVw  
for (i = l; i <= mid; i++) { @k ~Xem%<  
temp = data; :\gdQG  
} ;h3c+7u1  
for (j = 1; j <= r - mid; j++) { & P,8 )YA  
temp[r - j + 1] = data[j + mid]; wVV'9pw}  
} ANi}q9SC  
int a = temp[l]; mI9~\k&9  
int b = temp[r]; M>8#is(pV  
for (i = l, j = r, k = l; k <= r; k++) { #t po@pJsE  
if (a < b) { VbJGyjx  
data[k] = temp[i++]; I}$Y[Jve  
a = temp; n$B=Vt,  
} else { c?j/ H$  
data[k] = temp[j--]; ~ B1)!5Z  
b = temp[j]; (4x`/  
} sDw&U?gUv  
} /oE@F178  
} \_CC6J0k  
[y64%|m  
/** d#Ql>PrY  
* @param data l>H#\MR  
* @param l bp;b;f>  
* @param i eBBqF!WDb  
*/ mp>,TOi~s7  
private void insertSort(int[] data, int start, int len) { qAHQZKk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3|l+&LF!IC  
} T" XZ[q  
} -7$7TD`'7  
} DMsxHAE1  
} QUwSnotgU  
wHAoO#`wn5  
堆排序: .G4(Ryh  
WEOW6UV(  
package org.rut.util.algorithm.support; 0,E*9y}  
LoqS45-)  
import org.rut.util.algorithm.SortUtil; xW!2[.O5H  
,*wa#[  
/** 3g^_Fq'  
* @author treeroot (Lp<T!"  
* @since 2006-2-2 yM=% a3  
* @version 1.0 ,J!G-?:@n  
*/ <TC\Nb$~  
public class HeapSort implements SortUtil.Sort{ I Bo)fE\O  
x9p,j  
/* (non-Javadoc) w0q.cj@nd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xOt%H\*k"  
*/ AKzhal!  
public void sort(int[] data) { :Fm;0R@/k  
MaxHeap h=new MaxHeap(); N/4`afiV.  
h.init(data); .|G([O^H  
for(int i=0;i h.remove(); vB hpD  
System.arraycopy(h.queue,1,data,0,data.length); ~$Xz~#~  
} XcAx@CY9c  
XFUlV;ek  
private static class MaxHeap{ T/X[q7O~~4  
iLIH |P%  
void init(int[] data){ i<m1^a#C'  
this.queue=new int[data.length+1]; 2I3MV:5  
for(int i=0;i queue[++size]=data; pIXbr($  
fixUp(size);  ") q  
} LK-2e$1  
} )Gi!wm>zvN  
 <]2X~+v  
private int size=0; 96fbMP+7R  
6F(;=iY8  
private int[] queue; ?suxoP%  
N\1 EWi  
public int get() { 5 <X.1 T1  
return queue[1]; k2(B{x}L  
} ;G |5kvE>  
,qz$6oxh\  
public void remove() { ,9SBGxK5`  
SortUtil.swap(queue,1,size--); w@ALl#z;}  
fixDown(1); IlJ!jq  
} nYhI0q  
file://fixdown W|XW2`3p  
private void fixDown(int k) { H$bu*o-Z  
int j; 8E`A`z  
while ((j = k << 1) <= size) { UFr ]$m&  
if (j < size %26amp;%26amp; queue[j] j++; qRlS^=#  
if (queue[k]>queue[j]) file://不用交换 >> yK_yg  
break; e%Rg,dX  
SortUtil.swap(queue,j,k); OuWG.Za  
k = j; ]q~ _  
} G6]W'Kk  
} !VBl/ aU@  
private void fixUp(int k) { X,DG2HT  
while (k > 1) { 7jPPN  
int j = k >> 1; #;4<dDVy  
if (queue[j]>queue[k]) >r J9^rS  
break; l6] :Zcd0  
SortUtil.swap(queue,j,k); l.[S.@\=.  
k = j; SM;UNIRVE  
} W@Et  
} 0eP7efy  
<]1Z  
} 4HG;v|Cp  
XRA RgWj  
} -9W)|toWb"  
O~D>F*_^j  
SortUtil: YGFE(t;lPU  
Wwo'pke  
package org.rut.util.algorithm; >|Yr14?7  
y:,Ro@H%  
import org.rut.util.algorithm.support.BubbleSort; oM ey^]!  
import org.rut.util.algorithm.support.HeapSort; 82d~>i%T  
import org.rut.util.algorithm.support.ImprovedMergeSort; pbc<326X"  
import org.rut.util.algorithm.support.ImprovedQuickSort; T rK-XTev  
import org.rut.util.algorithm.support.InsertSort; wyWe2d  
import org.rut.util.algorithm.support.MergeSort; /&1FgSARK  
import org.rut.util.algorithm.support.QuickSort; moz*=a  
import org.rut.util.algorithm.support.SelectionSort; !(2rU@.  
import org.rut.util.algorithm.support.ShellSort; Ns ezUk8'  
)zn`qaHK@e  
/** Lmh4ezrdH  
* @author treeroot "Bn8WT2?  
* @since 2006-2-2 CNU,\>J@$  
* @version 1.0 mcO/V-\5'  
*/ d rRi<7 i  
public class SortUtil { K X0{dizZ  
public final static int INSERT = 1; nD#QC=}  
public final static int BUBBLE = 2; W5a7HkM  
public final static int SELECTION = 3; '$nm~z,V  
public final static int SHELL = 4; &}}UdJ`  
public final static int QUICK = 5; fib#)KE  
public final static int IMPROVED_QUICK = 6; d!>.$|b  
public final static int MERGE = 7; vNo(`~]c  
public final static int IMPROVED_MERGE = 8; T'C^,,if  
public final static int HEAP = 9; 'Z ;8-1M?O  
P)D2PVD  
public static void sort(int[] data) { jgpSFb<9F  
sort(data, IMPROVED_QUICK); 5 1&||.  
} _TLB1T^/4  
private static String[] name={ 0o-. m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u_31Db<  
}; oJ4OVfknD  
+hiskV@v  
private static Sort[] impl=new Sort[]{ L?h'^*F H}  
new InsertSort(), }(MI}o}  
new BubbleSort(), qK=uSL o\+  
new SelectionSort(), nev@ykP6  
new ShellSort(), {"e)Jj_=  
new QuickSort(), V7~tIhuJH  
new ImprovedQuickSort(), =o_Ua^mr  
new MergeSort(), ]]"O)tWHj  
new ImprovedMergeSort(), ^qR2!fwm<  
new HeapSort() ;-]' OiS;  
}; )SjhOvm  
-2DvKW$  
public static String toString(int algorithm){ 9Su4nt`i  
return name[algorithm-1]; cpLlkR O  
} JJE?!Yvc  
<A~a|A-QFR  
public static void sort(int[] data, int algorithm) { r3OR7f[  
impl[algorithm-1].sort(data); vIzREu|5  
} `PoFKtVX M  
Gn?NY}.S  
public static interface Sort { rm}%C(C{J  
public void sort(int[] data); Fi!BXngbd  
} ue8"_N  
PAYS~MnV@3  
public static void swap(int[] data, int i, int j) { ctk~}( 1#  
int temp = data; Sj(5xa[  
data = data[j]; ]0dj##5tJ  
data[j] = temp; ]wxjd l  
} azBYh*s=5{  
} .dwy+BzS  
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