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。 yD1*^~ loJ
插入排序: hD<z^j+
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package org.rut.util.algorithm.support; dMGu9k~u
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import org.rut.util.algorithm.SortUtil; u
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/** vzi=[A
* @author treeroot lNsPwyCoj
* @since 2006-2-2 p5F[( H|9
* @version 1.0 ,_NO[+5U
*/ gp-wlu4
public class InsertSort implements SortUtil.Sort{ %c^]Rdl
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/* (non-Javadoc) /bCrpcH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5mSXf"R^
*/ @1n0<V/
public void sort(int[] data) { Va=0R
int temp; czMLvPXRx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ! FHNKh
} d,<ctd
} R$6Y\ *L[
} ]
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} g?=B{V
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冒泡排序: Gw+z8^|C&}
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package org.rut.util.algorithm.support; !@VmaAT
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import org.rut.util.algorithm.SortUtil; {g/\5Z\b
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/** t:=Ui/!q
* @author treeroot J|xqfY@+
* @since 2006-2-2 f7s]:n*Ih
* @version 1.0 EiJSLL
*/ O)9T|,
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public class BubbleSort implements SortUtil.Sort{ VKN^gz
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/* (non-Javadoc) ).tZMLM/-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <[~x]-
*/ 8l='H l
public void sort(int[] data) { :eIBK
int temp; $u3N ',&
for(int i=0;i for(int j=data.length-1;j>i;j--){ f2{4Y)
if(data[j] SortUtil.swap(data,j,j-1); v11mu2
} =_ rn8
} -CL7^
} 0A1l"$_|
} J=\Y 4- "
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} ~!:F'}bj
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选择排序: JWn9&WK
W1:o2 C7
package org.rut.util.algorithm.support; |fw+{f
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import org.rut.util.algorithm.SortUtil; KO5Q;H
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/** 3i s.c)
* @author treeroot MnX2sX|
* @since 2006-2-2 _puQX@i
* @version 1.0 RsV<*s
*/ D6ck1pxkx
public class SelectionSort implements SortUtil.Sort {
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/* (O<lVz@8
* (non-Javadoc) BR0bf5T/
* mR0@R;,p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lZ.,"F@
*/ W:) M}}&H
public void sort(int[] data) { -_4! id
int temp; 3aDma/
for (int i = 0; i < data.length; i++) { 3[e@mcO
int lowIndex = i; ;ib~c,
for (int j = data.length - 1; j > i; j--) { =Wjm_Rvk9
if (data[j] < data[lowIndex]) {
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lowIndex = j; :JN3@NsK
} I+<`}
} KGI]W|T
SortUtil.swap(data,i,lowIndex); Lte\;Se.tu
} N\Hd3Om
} Hv`Zc*
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} m#S ZI}
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Shell排序: 3{_+dE"9
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package org.rut.util.algorithm.support; S\X_!|
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import org.rut.util.algorithm.SortUtil; ,J~1~fg89
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/** u3<])}I'
* @author treeroot 3n/L;T,X
* @since 2006-2-2 Q3KBG8
* @version 1.0 2
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*/ P#0_
public class ShellSort implements SortUtil.Sort{ C4G)anT
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/* (non-Javadoc) ~kHir]jc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vnl~AQfk|
*/ Hc+<(g
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ 49#-\=<gt
for(int j=0;j insertSort(data,j,i); :#L B}=HQ
} givK{Yt<B
} l-Xxv
insertSort(data,0,1); IX>|bA;
} k]JLk"K
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/** i3~!ofTb
* @param data zZRqb/20
* @param j lfKknp#B/O
* @param i ZD<,h`
lZ
*/
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private void insertSort(int[] data, int start, int inc) { d-*9tit
int temp; oO|^ [b#
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T-@pTJ !K9
} mA."*)8VNg
} 2ReulL8j
} a}
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} 646yeQ1
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快速排序: l:ED_env:
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package org.rut.util.algorithm.support; OBZ |W**N"
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import org.rut.util.algorithm.SortUtil; vW_A.iI"e
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/** GWhZ Mj
* @author treeroot \w:u&6,0O
* @since 2006-2-2 Ao\Vh\rQkq
* @version 1.0 d;=,/a
*/ cC[n~OV
public class QuickSort implements SortUtil.Sort{ 1D`RR/g&
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/* (non-Javadoc) e\dT~)c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 N` $7^^
*/ y(R*Z^c}d,
public void sort(int[] data) { <_>6a7ra
quickSort(data,0,data.length-1); Fv: %"P^
} xo%iL
private void quickSort(int[] data,int i,int j){ xsvs3y |
int pivotIndex=(i+j)/2; <d^7B9O?&w
file://swap A)#sh)
}Q
SortUtil.swap(data,pivotIndex,j); N|j.@K
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int k=partition(data,i-1,j,data[j]); e.+)0)A-
SortUtil.swap(data,k,j); $P-m6
if((k-i)>1) quickSort(data,i,k-1); Lwcw%M]
if((j-k)>1) quickSort(data,k+1,j); >(CoXSV5
b>z.d-
} qIT{` hX
/** {|gJC>f@
* @param data u
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* @param i V[M#qZS
* @param j ##_Za6/n
* @return D5>~'N3b
*/ of`]LU:
private int partition(int[] data, int l, int r,int pivot) { 5jQP"^g
do{ 55DzBV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Yel(}Ny
SortUtil.swap(data,l,r); IpJ v\zH7
} Bg
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while(l SortUtil.swap(data,l,r); <`3(i\-X
return l; ~K96y$ DTE
} ?GarD3#A
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} ehusI-q
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改进后的快速排序: S7/v,E
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package org.rut.util.algorithm.support; 1^#Q/J,
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import org.rut.util.algorithm.SortUtil; zjS:;!8em
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/** 1$VI\}
* @author treeroot b=UMoWS
* @since 2006-2-2 &U*J{OP|
* @version 1.0 [Be53U{=
*/ 1!wEXH(
public class ImprovedQuickSort implements SortUtil.Sort { @%nUfG7TQ
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private static int MAX_STACK_SIZE=4096; <57l|}8
private static int THRESHOLD=10; "EYjY->
/* (non-Javadoc) 8{fz0H.<?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t/WnDR/fM
*/ h&M
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public void sort(int[] data) { qetP93N_*
int[] stack=new int[MAX_STACK_SIZE]; ONq/JW$?LV
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int top=-1; rY?F6'}
int pivot; So*Wk "
int pivotIndex,l,r; yLO
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stack[++top]=0; KBRg95E~]l
stack[++top]=data.length-1; Z) i1?#
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while(top>0){ ?U/Wio$@
int j=stack[top--]; {&EZ>r-
int i=stack[top--]; UxcDDa/j2T
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pivotIndex=(i+j)/2; LL[#b2CKa
pivot=data[pivotIndex]; I,<54?vS
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SortUtil.swap(data,pivotIndex,j); iQzX-a|4]
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file://partition ?hJsN
l=i-1; EcU'*
r=j; )=E~CpKV
do{ RD$tc~@UB
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); yEUNkZ5^
SortUtil.swap(data,l,r); k g,ys4
} *Qg5Z
while(l SortUtil.swap(data,l,r); 2WPF{y%/
SortUtil.swap(data,l,j); HCx%_9xlm
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if((l-i)>THRESHOLD){ B3>Uba*-)}
stack[++top]=i; E/7vIg
F
stack[++top]=l-1; {y&\?'L'
} s"=F^#
if((j-l)>THRESHOLD){ {Bq"$M!Y
stack[++top]=l+1; KZ!N{.Jk
stack[++top]=j; ik Y]8BCc
} H6ky)kF&
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} \)otu\3/
file://new InsertSort().sort(data); Rnj Jg?I=
insertSort(data); Wj4^W<IO
} xxoHH#a
/** 6MQs \ J6.
* @param data q:
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*/ 5BU%%fBJ.
private void insertSort(int[] data) { hC|5e|S
int temp; hJ;f1dZ7}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m@G<ZCMZ
} x&R9${e%
} !dyxE'T2
} Zk/' \(5
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} `;5VH ]V
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归并排序: HPtTv}l
mq
J0z4I}
package org.rut.util.algorithm.support; R=vbUA
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import org.rut.util.algorithm.SortUtil; !,? <zg
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/** Qp kKVLi
* @author treeroot 0" U5oP[
* @since 2006-2-2 q_<*esZ,
* @version 1.0 tt6.
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*/ AI1@-
public class MergeSort implements SortUtil.Sort{ KInUe(g<9M
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/* (non-Javadoc) MxO
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BIxV|\k
*/ l |08
public void sort(int[] data) { IajD;V
int[] temp=new int[data.length]; ^M`>YOU2+
mergeSort(data,temp,0,data.length-1); R'Kt=.s<
} 2d-TU_JqX
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private void mergeSort(int[] data,int[] temp,int l,int r){ %f3c7\=C
int mid=(l+r)/2; |av*!i5Q
if(l==r) return ;
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mergeSort(data,temp,l,mid); K0tV'Ml#"
mergeSort(data,temp,mid+1,r); F&=I7i
for(int i=l;i<=r;i++){ <8u>_o6
temp=data; k2EHco0BG
} $Y8>_6%+T
int i1=l; ^cYStMjpy
int i2=mid+1; <Z{vC
for(int cur=l;cur<=r;cur++){ }1QI"M*
if(i1==mid+1) 3p:=xL
data[cur]=temp[i2++]; X AQGG>
else if(i2>r) d{er|$E?
data[cur]=temp[i1++]; WMW1B}Z3
else if(temp[i1] data[cur]=temp[i1++]; &MCy.(jN
else fv|]= e
data[cur]=temp[i2++]; :]vA2
} "yg.hK`
} 5\okU"{d7
<f%ujrX
} ?n)Xw)]
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改进后的归并排序: >BBl7
Fj
S%n$
package org.rut.util.algorithm.support; ^;.T}c%N
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import org.rut.util.algorithm.SortUtil; }K2
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/** d:A}CBTSY
* @author treeroot Z+ixRch@-s
* @since 2006-2-2 UcgG
* @version 1.0 BWWq4mdb{
*/ )IQ*
public class ImprovedMergeSort implements SortUtil.Sort { KE<kj$
^7.XGWQ)-
private static final int THRESHOLD = 10; n|WfaJQZ
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/* T=WNBqKo]
* (non-Javadoc) ',GV6kt_k
* :Zza)>l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {V}qwm?
*/ o+NMA
(
public void sort(int[] data) { -;$nb~y
int[] temp=new int[data.length]; -OrR $w|e
mergeSort(data,temp,0,data.length-1); TXjloGv^
} n0Go p^3
pV7N byb4
private void mergeSort(int[] data, int[] temp, int l, int r) { B@ {&<
int i, j, k; []zua14F6
int mid = (l + r) / 2; w]nX?S8
if (l == r) <?YA,"~
return; .oEbEs
if ((mid - l) >= THRESHOLD) u^=`%)
mergeSort(data, temp, l, mid); ;FU|7L$H
else LEZ&W;bCo
insertSort(data, l, mid - l + 1); zzJja/mp
if ((r - mid) > THRESHOLD) 'f+NW&
mergeSort(data, temp, mid + 1, r); 4J5pXlzV
else Q8q@Y R#
insertSort(data, mid + 1, r - mid); 4 /'N|c.
: lgi>^
for (i = l; i <= mid; i++) { &+01+-1hW
temp = data; L2fZ{bgy
} %D`o
for (j = 1; j <= r - mid; j++) { m2xBS!fm
temp[r - j + 1] = data[j + mid]; oZN'HT
} K*Ks"Vx
int a = temp[l]; s9O2k}]
int b = temp[r]; e"k/d<
for (i = l, j = r, k = l; k <= r; k++) { \K7t'20
if (a < b) { RNWX.g)b
data[k] = temp[i++]; AOb]qc
a = temp; -:<lkq&/
} else { t>xd]ti
data[k] = temp[j--]; E7nFb:zlV
b = temp[j]; #H~_K}Ks
} 2 0tO#{Li
} 6o=G8y
} 19t{|w<
S_b/DO
/** @0NJ{
* @param data 0 )}$^TV
* @param l
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* @param i 8Lz]Z
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*/ MsOs{2
)2
private void insertSort(int[] data, int start, int len) { p?# pT}1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^U@~+dw
} Udgqkl
} lG:kAtx4
} Da.G4,vLh
} )C~9E 5E
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堆排序: O
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CvDxq:x
package org.rut.util.algorithm.support; wTc)S6%7
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import org.rut.util.algorithm.SortUtil; N|usFqCNk^
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/** G~,:2
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* @author treeroot vB0RKk}d5
* @since 2006-2-2 KP]"P*?
?
* @version 1.0 646JDX[o
*/ ravyiOL
public class HeapSort implements SortUtil.Sort{ eWs&J24
8LzBh_J?
/* (non-Javadoc) kz}R[7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (s<s@`
*/ g}LAks
public void sort(int[] data) { ac{?+]8}
MaxHeap h=new MaxHeap(); r6Aneg7
h.init(data); EgjR^A1W2
for(int i=0;i h.remove(); w_tJ7pz8T
System.arraycopy(h.queue,1,data,0,data.length); 4?\:{1X=
} tq1CwzRX
zi@]83SS#
private static class MaxHeap{ $g0+,ll[6
^D%Za'
void init(int[] data){ +0Q,vK#j^
this.queue=new int[data.length+1]; GLMm(
for(int i=0;i queue[++size]=data; ]`g@UtD9`
fixUp(size); Pe73g%
} dt@P>rel
} "qz3u`[o
:rMM4
private int size=0; K<`osdp=&
tJViA`@x
private int[] queue; s$ENFp7P
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public int get() { l e4?jQQ@L
return queue[1]; w'MGA
} RGKYW>$0RR
a8k; (/
public void remove() { d\{>TdyF
SortUtil.swap(queue,1,size--); {%lXY Myu
fixDown(1); K.<.cJE
} ?'86d_8
file://fixdown _|[UI.a
private void fixDown(int k) { ]V l]XT$Um
int j; t7n(Qkrv
while ((j = k << 1) <= size) { nRL. ppUI
if (j < size %26amp;%26amp; queue[j] j++; !U9|x\BqJ2
if (queue[k]>queue[j]) file://不用交换 ^z1&8k"[^
break; LEMfG~Czq
SortUtil.swap(queue,j,k); 9EDfd NN
k = j; voP7"Dl[
} &,A64y
} [[PEa-992
private void fixUp(int k) { An;MVA
while (k > 1) { ;c~cet4
int j = k >> 1; @SZM82qU2z
if (queue[j]>queue[k]) ];'v8)Y
break; Q_* "SRz
SortUtil.swap(queue,j,k); ku$$ 1xq
k = j; Bjk]ZU0T
} pyLRgD0
g
} 4wC+S9I#E^
3_~cMlr3T.
} zi`b2h
7VcmVq}X
} -~?J+o+Pr"
lY|Jr{+Ln
SortUtil: (Yp+bS(PU*
*K> l*l(f]
package org.rut.util.algorithm; @u==x*{|
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import org.rut.util.algorithm.support.BubbleSort; ml \4xp,
import org.rut.util.algorithm.support.HeapSort; _g1b{$
import org.rut.util.algorithm.support.ImprovedMergeSort; O@p]KSfk
import org.rut.util.algorithm.support.ImprovedQuickSort; -S3MH1TZ
import org.rut.util.algorithm.support.InsertSort; \
[a%('}
import org.rut.util.algorithm.support.MergeSort; 9U$EJN_G
import org.rut.util.algorithm.support.QuickSort; W6On93sa
import org.rut.util.algorithm.support.SelectionSort; Yjx|9_|Xn
import org.rut.util.algorithm.support.ShellSort; jqPkc28
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/** gy&[?m6M=
* @author treeroot Q}-~O1
* @since 2006-2-2 035rPT7-2-
* @version 1.0 @|Rrf*J?%
*/ Me
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public class SortUtil { ,o)d3g-&g
public final static int INSERT = 1; }Ho Qwy|&
public final static int BUBBLE = 2; `uC@nJ
public final static int SELECTION = 3; DGzw8|/(
public final static int SHELL = 4; <=f}8a.R3
public final static int QUICK = 5; mEG#>Gg$
public final static int IMPROVED_QUICK = 6; -jMJAYj V
public final static int MERGE = 7; K)J(./
public final static int IMPROVED_MERGE = 8; "~D]E7Q3y
public final static int HEAP = 9; I1PuHf Qs
_q~=~nub
public static void sort(int[] data) { m=YU2!Mb
sort(data, IMPROVED_QUICK); ki85!k=Q2
} -wjN"g<
private static String[] name={ {GC?SaK
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L'u\w
}; qAw x2fPu
mauI42
private static Sort[] impl=new Sort[]{ St e=&^
new InsertSort(), ih7/}
new BubbleSort(), V{JAB]?^
new SelectionSort(), z<yU-m2h
new ShellSort(), ^Vpq$'!
new QuickSort(), ^k]XEW{PG
new ImprovedQuickSort(), 1Z9qjV%^
new MergeSort(), b j'Xg
new ImprovedMergeSort(), Y 'ow
new HeapSort() %mZ {4<7
}; zzxGAVu
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public static String toString(int algorithm){ E2m8UBS
return name[algorithm-1]; qzTuxo0B
} XHK70: i
ho$+L
public static void sort(int[] data, int algorithm) { zzyHoZJP
impl[algorithm-1].sort(data); dxmE3*b`
} ll C#1
Vv ?-"\Z>
public static interface Sort { (vTtDKp@
public void sort(int[] data); ~m$Y$,uH
} s D=n95`v
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public static void swap(int[] data, int i, int j) { Nd;Ku6
int temp = data; :3I@(k\PY
data = data[j]; $fzaPD4.
data[j] = temp;
~/P&Tub^
} Iu <?&9t
} (Tbw3ENz