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。 PV=5UyjW
插入排序: ~T89_L
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package org.rut.util.algorithm.support; lMbAs.!
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import org.rut.util.algorithm.SortUtil; f1(+
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/** D~\$~&_]=
* @author treeroot c[ ]4n
* @since 2006-2-2 QMpoa5ZQG
* @version 1.0 3F<VH
*/ @W9x$
public class InsertSort implements SortUtil.Sort{ IOV(seEY
]S5JUAGkE*
/* (non-Javadoc) icgSe:Ci
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FJ6u.u
*/ }:~x7|~s:
public void sort(int[] data) { L:'J
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int temp; 5hy""i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J`^I./
} oo.2Dn6z
} }O4^Cc6
} q')R4=0
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} I'0@viF"Nx
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冒泡排序: IyLx0[:U
@$+ecaVW
package org.rut.util.algorithm.support; qhz]Wm P
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import org.rut.util.algorithm.SortUtil;
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/** |a!fhl+
* @author treeroot BV[ 5}
* @since 2006-2-2 w&KK3*=""
* @version 1.0 n .RhxgC<
*/ w:<W.7y?0
public class BubbleSort implements SortUtil.Sort{ E3iW-B8u8
:B:"NyPA
/* (non-Javadoc) ^:Gie
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n= u&uqA*
*/ &sL&\+=<(
public void sort(int[] data) { iS<I0\D
int temp;
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for(int i=0;i for(int j=data.length-1;j>i;j--){ O~^"
if(data[j] SortUtil.swap(data,j,j-1); IDG}ZlG
} \9g+^vQg
} *NCl fkZ
} 9& 83n(m
} GJqJlgHe
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} W0]gLw9*
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选择排序: ZXuv CI
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package org.rut.util.algorithm.support; #: [<iSk
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import org.rut.util.algorithm.SortUtil; U b* wuI
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/** `p;I}
* @author treeroot 9Q+'n$s0^
* @since 2006-2-2 la+[bm<v
* @version 1.0 SrK) t.oK
*/ 8{X"h#
public class SelectionSort implements SortUtil.Sort { 3^6
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/* -xA2pYz"
* (non-Javadoc) T]=r Co
* +lMX{es\O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y1J=3Y
*/ ssN6M./6
public void sort(int[] data) { ktpaU,%
int temp; 6'Worj
for (int i = 0; i < data.length; i++) { E}nH1
int lowIndex = i; ^*Yh@4\{JH
for (int j = data.length - 1; j > i; j--) { ^kB8F"X
if (data[j] < data[lowIndex]) { $H9%J
lowIndex = j; J:zU,IIJ
} P IwFF}<(
} Y*vW!yu
SortUtil.swap(data,i,lowIndex); f__cn^1
} d!
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} De(Hw&
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} K$E3QVa
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Shell排序: q;][5
:dQ B R
package org.rut.util.algorithm.support; G%W8S
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import org.rut.util.algorithm.SortUtil; -K3^BZHI
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/** ='Y!+
* @author treeroot zp%Cr.)$
* @since 2006-2-2 TO?R({yx*
* @version 1.0 7OJ'){R$
*/ n+A?"`6*#
public class ShellSort implements SortUtil.Sort{ &RnTzqv
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/* (non-Javadoc) ]X ?7ZI^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GfmI<{da
*/ ei[j1F
public void sort(int[] data) { /*X2c6<d
for(int i=data.length/2;i>2;i/=2){ I
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for(int j=0;j insertSort(data,j,i); =aBctd:eX`
} ne_TIwf w-
} t~#zMUfac
insertSort(data,0,1); mSb#Nn6W
} Ke2ccN
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/** HTS%^<u
* @param data E4~<V=2l
* @param j l^pA2yh|
* @param i li}1S
*/ z;|A(*Y
private void insertSort(int[] data, int start, int inc) { `</ff+Q6
int temp; <#u=[_H
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9vGu0Um
} D)m5
} sE Q=dcK
} yEhTNBa*h{
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} rzm:Yx
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快速排序: v{ 0=
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package org.rut.util.algorithm.support; %B5wH_p
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import org.rut.util.algorithm.SortUtil; zGAq-<
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/** #/Vh|UeX
* @author treeroot DkvF 5c&
* @since 2006-2-2 W"}M1o
* @version 1.0 ~nh:s|l6%M
*/ pxCK;]
public class QuickSort implements SortUtil.Sort{ }}\vV} s
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/* (non-Javadoc) pu
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0;AA/
*/ iV *q2<>
public void sort(int[] data) { 0 Tx{3#
quickSort(data,0,data.length-1); CzRc%%BA
} hog=ut
private void quickSort(int[] data,int i,int j){ 8o'_`{ba
int pivotIndex=(i+j)/2; 3TY5 ;6
file://swap l0PZ`m+;j
SortUtil.swap(data,pivotIndex,j); ;h*K }U
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int k=partition(data,i-1,j,data[j]); XkXHGDEf 1
SortUtil.swap(data,k,j); SEGri#s
if((k-i)>1) quickSort(data,i,k-1); @,cowar*
if((j-k)>1) quickSort(data,k+1,j); ,D]QxbwZ
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} -ZRO@&tMD
/** N343qU
* @param data Py@wJEo
* @param i rA5=dJ"I
* @param j x7jC)M<k0
* @return X.f>'0i
*/ O&4SCVZp
private int partition(int[] data, int l, int r,int pivot) { AP7Yuv`
do{ ]+XYEv
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xp}hev^@$
SortUtil.swap(data,l,r); Z{ X|6.
} jB$IyQ;@
while(l SortUtil.swap(data,l,r); tG9BfGF
return l; <UV1!2nv*
} E[@ u
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} t\{'F7
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改进后的快速排序: BGD8w2
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package org.rut.util.algorithm.support; |"/8XA
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import org.rut.util.algorithm.SortUtil; D#il*
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/** a!<8\vzg
* @author treeroot si`A:14R
* @since 2006-2-2 52 fA/sx
* @version 1.0 Crho=RJPR
*/ %|g>%D3Z?
public class ImprovedQuickSort implements SortUtil.Sort { TDFkxB>
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private static int MAX_STACK_SIZE=4096; _aad=BrMK
private static int THRESHOLD=10; :Q $K<)[
/* (non-Javadoc) 7VqM$I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /%}*Xh
*/ u09:Z{tL;@
public void sort(int[] data) { -0$55pa/@:
int[] stack=new int[MAX_STACK_SIZE]; >VP=MbN
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int top=-1; vY }A
int pivot; TZ(cu>
int pivotIndex,l,r; K1r#8Q!t
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stack[++top]=0; H:t$'kb`
stack[++top]=data.length-1; E9Np 0M<
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while(top>0){ @z4*.S&tz
int j=stack[top--]; 544X1Ww2
int i=stack[top--]; Pe3@d|-,MU
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pivotIndex=(i+j)/2; 'IZI:V"
pivot=data[pivotIndex]; B$ajK`x&I
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SortUtil.swap(data,pivotIndex,j); u frW\X
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file://partition ;aI[=?<x
l=i-1; 7
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r=j; <>s`\ %
do{ >}`:Ac
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q3.j"WaP
SortUtil.swap(data,l,r); `k[-M2[
} Szq/hv=Q
while(l SortUtil.swap(data,l,r); < Z{HX[y
SortUtil.swap(data,l,j); L;VoJf
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if((l-i)>THRESHOLD){ Q&wB$*u
stack[++top]=i; C([phT;
stack[++top]=l-1; 3L833zL
} e+$p9k~
if((j-l)>THRESHOLD){ +$C4\$t
stack[++top]=l+1; 8jd;JPz@\
stack[++top]=j;
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} [ oL.+
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} Gn|F`F
file://new InsertSort().sort(data); M m[4yP%
insertSort(data); 8oUpQcim
} .y_/U wu
/** R:e<W/P"
* @param data hd>aZ"nm1
*/ _/uFsYC
private void insertSort(int[] data) { K/tRe/t}
int temp; 6-yd]("
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "U!AlZ`g
} U1DXeh~V
} lD^]\;?
} =yr0bGy`-
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} A<5ZF27
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归并排序: IE;~?W"
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package org.rut.util.algorithm.support; $ACvV"b
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import org.rut.util.algorithm.SortUtil; [`{Z}q&
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/** W3IpHV
* @author treeroot C ~<'rO}|
* @since 2006-2-2 c(:f\Wc3Z
* @version 1.0
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*/ &u /Nf&A
public class MergeSort implements SortUtil.Sort{ U]^HjfX\
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/* (non-Javadoc) O4r0R1VQM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NLUT#!Gr
*/ P|.] DJ
public void sort(int[] data) { ]w;rfn9D
int[] temp=new int[data.length]; :rHJ4Tl
mergeSort(data,temp,0,data.length-1); g#F?!i-[F
} qQA}Z*(m
q*F{/N**
private void mergeSort(int[] data,int[] temp,int l,int r){ dRj| g
int mid=(l+r)/2; LV\DBDM
if(l==r) return ; G B>QK
mergeSort(data,temp,l,mid); rs,2rSsg!
mergeSort(data,temp,mid+1,r); Qr^|:U!;[z
for(int i=l;i<=r;i++){ O\E /. B
temp=data; tE@;X=
} &j4 xgh 9
int i1=l; a=DcZ_M
int i2=mid+1; ^cczJOxB
for(int cur=l;cur<=r;cur++){ ^aH\7J@Y
if(i1==mid+1) 5jd,{<
data[cur]=temp[i2++]; 4a'N>eDR
else if(i2>r) r<K(jG[:{f
data[cur]=temp[i1++]; GliwY_
else if(temp[i1] data[cur]=temp[i1++]; k.uMp<)D
else zaah^.MA|
data[cur]=temp[i2++]; MYla OT
} ^Wc@oa`
}
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} AtdlZ
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改进后的归并排序: A D1=[I3
( M7pT
package org.rut.util.algorithm.support; x|mqL-Q f
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import org.rut.util.algorithm.SortUtil; ]}U*_rM:
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/** p?B=1vn-2
* @author treeroot 2Ou[u#H
* @since 2006-2-2 gW-V=LV (
* @version 1.0 ft$RSb#
*/ a"FCZ.O1
public class ImprovedMergeSort implements SortUtil.Sort { BReJ!|{m}
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private static final int THRESHOLD = 10; D@Vt^_
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/* f>W-
* (non-Javadoc) tS|(K=$
* fjU8gV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $lLz3YS
*/ 'R
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public void sort(int[] data) { lEhk'/~
int[] temp=new int[data.length]; R $&o*K`?
mergeSort(data,temp,0,data.length-1); *Eo?k<:zPm
} Pb?$t
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private void mergeSort(int[] data, int[] temp, int l, int r) { poToeagZ~Q
int i, j, k; 5\e9@1Rc
int mid = (l + r) / 2; "tB;^jhRs
if (l == r) OU8Lldt
return; Wzw7tLY._
if ((mid - l) >= THRESHOLD) ,QcF|~n
mergeSort(data, temp, l, mid); 8>0e*jC
else +xrr?g
insertSort(data, l, mid - l + 1); f ` R/
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if ((r - mid) > THRESHOLD) <4P4u*/o
mergeSort(data, temp, mid + 1, r); B5X(ykaX~
else .ox8*OO<
insertSort(data, mid + 1, r - mid); %d?cP}V
.7l&1C)i
for (i = l; i <= mid; i++) { *g6n
temp = data; 89o/F+ _b
} NdzSz]q}
for (j = 1; j <= r - mid; j++) { ;`^WGS(3.%
temp[r - j + 1] = data[j + mid]; ;~D)~=|ZZ
} ly:q6i
int a = temp[l]; n2oz"<?$S
int b = temp[r]; W3 'q\+
for (i = l, j = r, k = l; k <= r; k++) { P/Q!<I
if (a < b) { K#pNec
data[k] = temp[i++]; ]=>F.GE
a = temp; .
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} else { \'|>p/5I
data[k] = temp[j--]; mGJasn
b = temp[j]; i(>4wK!!
} ;*:Pw?'
} R'C2o]
} eD*A)
P;Ga4Q.
/** Zo g']=
* @param data ;xzUE`uUfJ
* @param l [uI|DUlI6o
* @param i Bh;7C@dq
*/ @JyK|.b#0
private void insertSort(int[] data, int start, int len) { vSi.txV2
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5 N#3a0)
} )?X-(4
} v
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} X)7x<?DAy
} 0l-Ef1
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堆排序: J2'Nd'
WJ4li@T7V
package org.rut.util.algorithm.support; Z yE `/J'
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import org.rut.util.algorithm.SortUtil; $`)/0{qY-
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/** TWQG591
* @author treeroot f!!V${)X
* @since 2006-2-2 X@K-^8
* @version 1.0 P!+'1KR
*/ cm&I* 0\
public class HeapSort implements SortUtil.Sort{ J6L K
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/* (non-Javadoc) G0^2Wk[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6~1|qEe6I
*/ o1FF"tLkN
public void sort(int[] data) { y0'Rmk,
MaxHeap h=new MaxHeap(); PYM(Xz$
h.init(data); il:$sd
for(int i=0;i h.remove(); E )5E$
System.arraycopy(h.queue,1,data,0,data.length); =jX8.K4]
} CS==A57I
Z;:u'=
private static class MaxHeap{ 763v
*:L?#Bw
void init(int[] data){ iVy7elT;R
this.queue=new int[data.length+1]; V`bi&1?6\
for(int i=0;i queue[++size]=data; 5A
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fixUp(size); ,!7 H]4Qx
} ,'p2v)p^4
} \H=&`?
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private int size=0; ]y,==1To
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private int[] queue; `<\1[HJ\
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public int get() { RV5n,J
return queue[1]; uWM{JEOl
} dv.(7Y7.x
b+f'[;
public void remove() { 'J6
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SortUtil.swap(queue,1,size--); D (h18
fixDown(1); YEj8S5"Su\
} X!m9lV<
file://fixdown 20Z8HwQi
private void fixDown(int k) { b#K:_ac5
int j; O'W0q;rT
while ((j = k << 1) <= size) { { Fawt:
if (j < size %26amp;%26amp; queue[j] j++; m3mp/g.>
if (queue[k]>queue[j]) file://不用交换 >|twyb
break; "QWq_R
SortUtil.swap(queue,j,k); )tl.s)"N
k = j; +TQ47Zc
} hA33K #bC
} TJ1+g
\
private void fixUp(int k) { M
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while (k > 1) { .8P.)%
int j = k >> 1; JvT"bZk(o
if (queue[j]>queue[k]) }(1JaG
break; [BT/~6ovrZ
SortUtil.swap(queue,j,k); Qt/8r*Oe
k = j; Z| V`B `
} EpFQ|.mQ
} WC|.g,9#
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} ho0@ l
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} /k<WNZM
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SortUtil: T`Mf]s)*
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package org.rut.util.algorithm; ;~\MZYs3m
[&nh5|f
import org.rut.util.algorithm.support.BubbleSort; DBCK2PlJ
import org.rut.util.algorithm.support.HeapSort; Sp^9&^
import org.rut.util.algorithm.support.ImprovedMergeSort; t| 'N+-T3
import org.rut.util.algorithm.support.ImprovedQuickSort; `$B3X
import org.rut.util.algorithm.support.InsertSort; :@!ic<p
import org.rut.util.algorithm.support.MergeSort; l?Fb ='#
import org.rut.util.algorithm.support.QuickSort; @)-$kk*
import org.rut.util.algorithm.support.SelectionSort; y^}6!>Ou:
import org.rut.util.algorithm.support.ShellSort; ^8@Iyh
|'{zri|A"
/** aMvI?y {
* @author treeroot 7
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* @since 2006-2-2 )I$q 5%q8
* @version 1.0 w);6K[+;
*/ aOiR l,
public class SortUtil { tc!wLnhG
public final static int INSERT = 1; m/qbRk68s
public final static int BUBBLE = 2; /Ne<V2AX
public final static int SELECTION = 3; W@Lu;g.Yc
public final static int SHELL = 4; 6+KHQFb&N
public final static int QUICK = 5; R#DwF,
public final static int IMPROVED_QUICK = 6; 5GPo*Qpl
public final static int MERGE = 7; >$,y5 AJ&
public final static int IMPROVED_MERGE = 8; M>>qn_yq4
public final static int HEAP = 9; ,i,q!M{-
v0ES;
public static void sort(int[] data) { [w&$| h:;
sort(data, IMPROVED_QUICK); +C(/Lyo}
} EB_NK
private static String[] name={ d R]Q$CJ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" X0M1(BJgGo
}; SJ};TEA
;x8k[p~2
private static Sort[] impl=new Sort[]{ *L'>U[Pl7
new InsertSort(), &_gTD
new BubbleSort(), zdEPDdB
new SelectionSort(), }LijnHH.
new ShellSort(), LI6hEcM=
new QuickSort(), Wf&W^Q
new ImprovedQuickSort(), BZXUwqEh
new MergeSort(), =T7A]U]
new ImprovedMergeSort(), *s>BG1$<
new HeapSort() 't9hXzAfW
}; D.1J_Y=9
{!K-E9_,S
public static String toString(int algorithm){ 0sh/|`\
return name[algorithm-1]; zWb4([P;
} Xj5~%DZp
XFh>U7z.
public static void sort(int[] data, int algorithm) { DmBS0NyR7Y
impl[algorithm-1].sort(data); Z KOXI%~Mc
} pOrWg@<\L
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R
public static interface Sort { z8J."27ND
public void sort(int[] data); fuB)qt!E
} CCX8>09
V86Xg:?7
public static void swap(int[] data, int i, int j) { LT,? $I
int temp = data; F1Hh7
F
data = data[j]; N?m0USu*
data[j] = temp; if]Noe
} PT5AA8F
} G_dsrpI=N