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。 0y/31hp
插入排序: [MKG5=kaE
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package org.rut.util.algorithm.support; E
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import org.rut.util.algorithm.SortUtil; 1tI=Dwx
/** u)r:0;5
* @author treeroot Jd v;+HN[
* @since 2006-2-2 ~Ma r
* @version 1.0 /J!:_Nq
*/ Rrl
public class InsertSort implements SortUtil.Sort{ AOKC1iD%Y
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/* (non-Javadoc) -])=\n!=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q
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*/ Z
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public void sort(int[] data) { Y6)o7t
int temp; rev*G:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HOCj* O4
} zA.0Sm
} 3Z me?o*bY
} U1lqg?KO
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} f.66N9BHL,
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冒泡排序: S ++~w9}
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package org.rut.util.algorithm.support; SA=>9L,2
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import org.rut.util.algorithm.SortUtil; y@LiUe5
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/** |KS,k|).
* @author treeroot XGC\6?L~
* @since 2006-2-2 ).(y#zJ7P
* @version 1.0 1 ^= QIX
*/ %8xRT@Q
public class BubbleSort implements SortUtil.Sort{ h4F%lGot
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/* (non-Javadoc) {]dtA&8(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ov?J"B'F
*/ %-.;sO=g
public void sort(int[] data) { |K-`
int temp; {N/%%O.b
for(int i=0;i for(int j=data.length-1;j>i;j--){ 66" 6>
if(data[j] SortUtil.swap(data,j,j-1); c>^(=52Q
} w(
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} k>.8 lc\
} ]Zc|<f;
} |}UkVLc_^
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} {$yju _[
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选择排序: dpNERc5
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package org.rut.util.algorithm.support; |C<#M<
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import org.rut.util.algorithm.SortUtil; $$&.}}.,
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/** A 0k?$ko
* @author treeroot \i%mokfbc
* @since 2006-2-2 q^EY?;Y
* @version 1.0 NId.TaXh
*/ )rG4Nga5}
public class SelectionSort implements SortUtil.Sort { pxd=a!(
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/* sTlel&
* (non-Javadoc) F!0iM)1o
* T+$H[&j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TSsZzsdr2
*/ $Emu*'
public void sort(int[] data) { 1H/I-
int temp; Cg]),S
for (int i = 0; i < data.length; i++) { !.$L=>:V
int lowIndex = i; %'H DP3
for (int j = data.length - 1; j > i; j--) { ^sLx3a
if (data[j] < data[lowIndex]) { 0x!&>
lowIndex = j; RK|*yt"f"
} %g.cE}^
} RE%f'y
SortUtil.swap(data,i,lowIndex); k<^M >` $
} <c pck
} /]xa}{^B
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} <dH@e
#[lhem] IC
Shell排序: &o;0%QgF
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package org.rut.util.algorithm.support; r%ES#\L6+|
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import org.rut.util.algorithm.SortUtil; ?s^3o{!<W
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/** 0^-1d2Z~
* @author treeroot uD&B{c+a
* @since 2006-2-2 DdgiY9a.
* @version 1.0 PWpt\g
*/ @9gZH_ur>E
public class ShellSort implements SortUtil.Sort{ s.}K?)mH
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/* (non-Javadoc) 'Be'!9K*d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }bjZeh.
*/ ?$F:S%eH
public void sort(int[] data) { {EZ
;
for(int i=data.length/2;i>2;i/=2){ /gXli)
for(int j=0;j insertSort(data,j,i); QoI@/
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} pk(<],0]X
} A^%z;( 0p
insertSort(data,0,1); r'pFHX
} L{'qZ#N[
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/** \L6U}ZQ2V
* @param data %^gT.DsX-
* @param j QBY7ZT05Gt
* @param i 18V*Cu
*/ )^g}'V=vIr
private void insertSort(int[] data, int start, int inc) { k`2 K?9\
int temp; BeaX 0#\
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qs 52)$
} g|e^}voRM
} U:gE:t f
} [$9 sr=3:
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} lb`P9mbr+
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快速排序: Z(*nZT,
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package org.rut.util.algorithm.support; FbWkT4t|
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import org.rut.util.algorithm.SortUtil; ]Fl+^aLS
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/** 6SlE>b9tA
* @author treeroot =EsKFt"
* @since 2006-2-2 aW4 tJN%!
* @version 1.0 VlXIM,
*/ (fm\kV
public class QuickSort implements SortUtil.Sort{ l
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/* (non-Javadoc) 5|S|HZ8G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )0fQ(3oOg
*/ _Vj O
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public void sort(int[] data) { q,$UKg#i
quickSort(data,0,data.length-1); JR'Q Th:z
} _6^ vxlF
private void quickSort(int[] data,int i,int j){ n*@^c$&P
int pivotIndex=(i+j)/2; |3Oe2qb
file://swap >:Xzv
SortUtil.swap(data,pivotIndex,j); Nd^9.6,JU
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int k=partition(data,i-1,j,data[j]); L~I<y;x
SortUtil.swap(data,k,j); CHN!o9f
if((k-i)>1) quickSort(data,i,k-1); V |#B=W
if((j-k)>1) quickSort(data,k+1,j); V{ra,a*
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}
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/** ~W%A8`9
* @param data Q:>;d-D|1
* @param i 3f
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* @param j D:8-f3
* @return p^5B_r:
*/ {BY`Wu:w
private int partition(int[] data, int l, int r,int pivot) { q|=tt(}G
do{ sZ]O&Za~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q6\z]8)
SortUtil.swap(data,l,r); 3vQ?vS|2
} ZJ=-cE2n
while(l SortUtil.swap(data,l,r); qECc[)B
return l; 4kxy7]W
} XRJ<1w:
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} W(~G^Xu
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改进后的快速排序: )amdRc
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package org.rut.util.algorithm.support; g]X4)e]
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import org.rut.util.algorithm.SortUtil; HP*x?|4
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/** rTDx|pvYx
* @author treeroot W_O,Kao
* @since 2006-2-2 }Jjq] lW
* @version 1.0 EG7ki0
*/ &p=|z2 J
public class ImprovedQuickSort implements SortUtil.Sort { ^^3
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private static int MAX_STACK_SIZE=4096; vh
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private static int THRESHOLD=10; YPf&y"E&H
/* (non-Javadoc) s@^GjA[6+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ib/&8)Y+J
*/ Vnv<]D
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public void sort(int[] data) { xg. d)n
int[] stack=new int[MAX_STACK_SIZE]; qGl+KI
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int top=-1; goIn7ei92
int pivot; Ju)2J?Xs5
int pivotIndex,l,r; ,5t.0XqS
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stack[++top]=0; QIBv}hgcy
stack[++top]=data.length-1; 76zi)f1f
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while(top>0){ P[#V{%f*5
int j=stack[top--]; Zhz.8W
int i=stack[top--];
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pivotIndex=(i+j)/2; 1i2jYDB"
pivot=data[pivotIndex]; 9t7_7{Q+;
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SortUtil.swap(data,pivotIndex,j); Kdik7jL/J
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file://partition l: 1Zq_?v;
l=i-1; S7E:&E&
r=j; S[X bb=n
do{ D-E30b]e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]/bf#&@g`k
SortUtil.swap(data,l,r); ?G0=\U<
o,
} n8iejdA'
while(l SortUtil.swap(data,l,r); fo4j^,`
SortUtil.swap(data,l,j); !;zacw
l')?w]|
if((l-i)>THRESHOLD){ 8yB
stack[++top]=i; H.|FEV@
stack[++top]=l-1; (!W:-|[K\
} .OX.z~":y
if((j-l)>THRESHOLD){
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stack[++top]=l+1; z)]_ (zZ^
stack[++top]=j; MFiX8zwhx+
} }`h)+Im=
Ol{)U;,`
} 7evE;KL
file://new InsertSort().sort(data); `|
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insertSort(data); EG@*J*|S
} h&NcN-["
/** )/Ee#)z*
* @param data E`u=$~K
*/ m~(]\
private void insertSort(int[] data) { wu/]M~XwI
int temp; Z+(V'e;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -9.S?N'T>;
} 8e[kE>tS._
} t?QR27cs$
} u"?cmg<.1
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} )0yY|E\
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归并排序: 7K
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C.}Z5BwS
package org.rut.util.algorithm.support; N&-d8[~
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import org.rut.util.algorithm.SortUtil; `.#e4 FBW
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/** :PY~Cws
* @author treeroot 6AUXYbK,
* @since 2006-2-2 r2M._}bF
* @version 1.0 UqsVqi
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*/ O-U_Zx0zd
public class MergeSort implements SortUtil.Sort{ )o
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/* (non-Javadoc) }ytc oIuLf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BN|+2D+S
*/ D?)"Z$
public void sort(int[] data) { =zK7`5
int[] temp=new int[data.length]; V`l.F"<L
mergeSort(data,temp,0,data.length-1); p*-o33Ve
} u;F++$=
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private void mergeSort(int[] data,int[] temp,int l,int r){ >C*q
int mid=(l+r)/2; u f.Zg;Vc
if(l==r) return ; =L
7scv%i
mergeSort(data,temp,l,mid); /IxMRi=
mergeSort(data,temp,mid+1,r); T]Vh]|_s
for(int i=l;i<=r;i++){ : N> 5{
temp=data; ;k9s@e#a
} I'`Q_5s5
int i1=l; sc@v\J;k
int i2=mid+1; cW/RH.N
for(int cur=l;cur<=r;cur++){ "o*F$7D!
if(i1==mid+1) ME>OTs
data[cur]=temp[i2++]; z%}^9
else if(i2>r) 3R
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data[cur]=temp[i1++]; 7;dV]N
else if(temp[i1] data[cur]=temp[i1++]; ([qw#!;w;
else B;SYO>.W
data[cur]=temp[i2++]; 2w $o;zz1
} 9} :n
} A%Pjg1(uX
Zh)Qq?H
} 0vqXLFf
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改进后的归并排序: 1,p7Sl^h
&DYHkG
package org.rut.util.algorithm.support; u `1cXL['
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import org.rut.util.algorithm.SortUtil; g7EJyA
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/** 5)wz `OS
* @author treeroot &y[Od{=
* @since 2006-2-2 1 xm8w$%
* @version 1.0 qSlC@@.>
*/ 21O!CvX
public class ImprovedMergeSort implements SortUtil.Sort { 6wYd)MDLL
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private static final int THRESHOLD = 10; C&^"]-t
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/* X2 c<.
* (non-Javadoc) +H,/W_/g
* Du k v[/60
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >)YaWcI
*/ gI~Ru8
public void sort(int[] data) { 6D_3Hwrs
int[] temp=new int[data.length]; z4D[>2*
mergeSort(data,temp,0,data.length-1); '2vZ%C$
} qgbp-A!2zF
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private void mergeSort(int[] data, int[] temp, int l, int r) { IP~*_R"bM
int i, j, k; ^vS+xq|4"
int mid = (l + r) / 2; 9+)5 #!0
if (l == r) ]R~K-cN`
return; /~yk
if ((mid - l) >= THRESHOLD) nsQx\Tnhx
mergeSort(data, temp, l, mid); ]mYT!(}
else y#!8S{
insertSort(data, l, mid - l + 1); &x
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if ((r - mid) > THRESHOLD) ;HtHN
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mergeSort(data, temp, mid + 1, r); sPuNwVX>}I
else "q5Tw+KCfu
insertSort(data, mid + 1, r - mid); #]>Z4=]v
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for (i = l; i <= mid; i++) { FGo{6'K(:
temp = data; FO#`}? R`
} <)ozbv Xk
for (j = 1; j <= r - mid; j++) { DUUQz:?{J
temp[r - j + 1] = data[j + mid]; u;R<
} bq#*XCt#
int a = temp[l]; ^vPM\qP#g
int b = temp[r]; #q'J`BC
for (i = l, j = r, k = l; k <= r; k++) { \_;zm+ <{
if (a < b) { :_E=&4&g
data[k] = temp[i++]; \yP\@cpY{
a = temp; V+j58Wuf
} else { 4+qoq$F</
data[k] = temp[j--]; eT* )r~
b = temp[j]; kXK D>."E*
} 7~n<%q/6
} W'WZ@!!
} f}Mx\dc
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/** ;/T=ctIs
* @param data nA$zp
* @param l Gxx:<`[ON
* @param i @k~'b
*/ V`Ve__5;
private void insertSort(int[] data, int start, int len) { s @\UZC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); WfYu-TK*
} S?TyC";!
} fR[kjwX)<1
} qXC>DGy
} hZ6CiEJB
F}
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堆排序: =s3f{0G
zQvp<IUq
package org.rut.util.algorithm.support; 0RmQfD>
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import org.rut.util.algorithm.SortUtil; sswYwU
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/** \0.
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* @author treeroot IjJO;
* @since 2006-2-2 t*X
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* @version 1.0 (prqo1e@
*/ t0t" =(d
public class HeapSort implements SortUtil.Sort{ U8Rko)
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/* (non-Javadoc) <*I%U]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5k /Y7+*?E
*/ l!UF`C0g
public void sort(int[] data) { %C}TdG(C
MaxHeap h=new MaxHeap(); 8&T6
h.init(data); Z1u:OI@(
for(int i=0;i h.remove(); yn &+ >{
System.arraycopy(h.queue,1,data,0,data.length); Y [8~M8QX
} zl~`>
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private static class MaxHeap{ Cbw@:+%J{
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void init(int[] data){ ~%)ug3%e
this.queue=new int[data.length+1]; ibe#Y
for(int i=0;i queue[++size]=data; GZt+(q
fixUp(size); eAvOT$
} )8ub1,C
} .v<Q-P\8/
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private int size=0; ^Yu<fFn
A}K2"lQ#>,
private int[] queue; ZV :cgv
!cblmF;0
public int get() { jV:Krk6T<
return queue[1]; ~o"VZp
} j2\B(PA
u7L!&/ 6On
public void remove() { 'x'.[=;
SortUtil.swap(queue,1,size--); qHM,#W<
fixDown(1); ){'Ef_/R
} UvR F\x%
file://fixdown POZ5W)F(
private void fixDown(int k) { G.ag$KF
int j; vR;?~^{*s
while ((j = k << 1) <= size) { LI`L!6^l
if (j < size %26amp;%26amp; queue[j] j++; ~96fyk|
if (queue[k]>queue[j]) file://不用交换 $?voQ&
break; d46PAA{'
SortUtil.swap(queue,j,k); R<"fcsU
k = j; Q7<_>)e^
} (+M]C]
} -1~-uE.~4d
private void fixUp(int k) { ~3,>TV
while (k > 1) { km%c0:
int j = k >> 1; P~"e=NL5
if (queue[j]>queue[k]) k)'y;{IN
break; x:Mh&dq?
SortUtil.swap(queue,j,k); -eZ$wn![
k = j; pb>TUKvT&
} (4;m*'X
} }(*eR F'
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} 0[\^Y<ec
wNNInS6
} 6a_MA*XK
LIm{Y`XU
SortUtil: ]6:|-x:m
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package org.rut.util.algorithm; J(0E'o{ug
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import org.rut.util.algorithm.support.BubbleSort; *wvd[q h
import org.rut.util.algorithm.support.HeapSort; mNc?`G_R
import org.rut.util.algorithm.support.ImprovedMergeSort; #pe#(xoI
import org.rut.util.algorithm.support.ImprovedQuickSort; bSG}I|
import org.rut.util.algorithm.support.InsertSort; o7_*#5rD
import org.rut.util.algorithm.support.MergeSort; G)(vd0X1
import org.rut.util.algorithm.support.QuickSort; ~2HlAU))<&
import org.rut.util.algorithm.support.SelectionSort; \3WF-!xe
import org.rut.util.algorithm.support.ShellSort; ,b b/
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/** vS@;D7ep
* @author treeroot <l#|I'hP
* @since 2006-2-2 [osIQ!u;:
* @version 1.0 ?h$
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*/ t\GoUeH]
public class SortUtil {
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public final static int INSERT = 1; PU& v{gn
public final static int BUBBLE = 2; sxP1.= W
public final static int SELECTION = 3; h?8I`Z)h
public final static int SHELL = 4; nfj8z@!
public final static int QUICK = 5; ,$H[DX
public final static int IMPROVED_QUICK = 6; ryC7O'j_P
public final static int MERGE = 7; 88]4GVi
public final static int IMPROVED_MERGE = 8; ?KB+2]7m6
public final static int HEAP = 9; B_kjy=]O.
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public static void sort(int[] data) { =x &"aF1
sort(data, IMPROVED_QUICK); 6d# 7
} c[E"
private static String[] name={ C>MEgGP
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uV|%idC
}; '5f6
M^}|2
*v}3So
private static Sort[] impl=new Sort[]{ ],W/IDv
new InsertSort(), z1AYXW6F
new BubbleSort(), u&E$(
new SelectionSort(), ]ChGi[B~9
new ShellSort(), [& d"Z2gK
new QuickSort(), 2F
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new ImprovedQuickSort(), lihV! 1
new MergeSort(), ?=},%^
new ImprovedMergeSort(), mw!EDJ;'
new HeapSort() ##\
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}; SjmWlf,
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public static String toString(int algorithm){ K(:
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return name[algorithm-1]; o-}q|tD$<
} 9kO}054
I'%\
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public static void sort(int[] data, int algorithm) { fZ6-ap,u
impl[algorithm-1].sort(data); !vY5X2?tr,
} 5ns.||%k
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public static interface Sort { K^yZfpa8
public void sort(int[] data); 9 aacW
} {L#+v~d^'n
d1{%z\u
a
public static void swap(int[] data, int i, int j) { Y+ Qm.
int temp = data; . 1q4Q\B<
data = data[j]; Z37%jdr
data[j] = temp; QqdVN3#1z
} .B? J@,
} 0kiV-yc