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。 ZRfa!9vl
插入排序: Q$j48,e
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package org.rut.util.algorithm.support; hh&y2#Io
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import org.rut.util.algorithm.SortUtil; -+|[0hpw
/** E2D8s=r
* @author treeroot RiG!TTa
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* @since 2006-2-2 GGtrH~zx
* @version 1.0 'bPo 5V|
*/ Al}PJz\
public class InsertSort implements SortUtil.Sort{ @x
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/* (non-Javadoc) G9Tix\SpF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _xt(II
*/ _<Yo2,1^
public void sort(int[] data) { HC,@tfS
int temp; !3# }ZC2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o#/iR]3
} 5&=n
} IxBO$2
} }4%)m
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} Un{ln*AR\
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冒泡排序: S]O Hv6
s;$TX30 4
package org.rut.util.algorithm.support; *PU,Rc()6
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import org.rut.util.algorithm.SortUtil; ^I?y\:.
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/** |/s2AzDD
* @author treeroot RGI6W{\
* @since 2006-2-2 #!# X3j
* @version 1.0 [{LnE:
*/ '$-,;vnP0
public class BubbleSort implements SortUtil.Sort{ + Z2<spqG
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/* (non-Javadoc) ;o459L>sW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vp"Ug,1
*/
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public void sort(int[] data) { 9$@ g;?}Ps
int temp; 4 xzJql
for(int i=0;i for(int j=data.length-1;j>i;j--){ `h5eej&s(
if(data[j] SortUtil.swap(data,j,j-1); i9k]Q(o
} NVWeJ+w
}
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} %kFELtx
} UZXcKl>u
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} bRz^=
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选择排序: TM}'XZ&
(,c?}TP
package org.rut.util.algorithm.support; 33*d/%N9
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import org.rut.util.algorithm.SortUtil; |$?Ux,(6
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/** `pd
* @author treeroot S*m`'
* @since 2006-2-2 nf.:5I.
* @version 1.0 Bx : So6:
*/ ^!p<zZ
public class SelectionSort implements SortUtil.Sort { 6Vbv$ AU
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/* ; (0(8G
* (non-Javadoc) OWXye4`*
* &*]{"^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fqk Dk
*/ x1V2|~;p|
public void sort(int[] data) { K
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int temp; >6l ;/J
for (int i = 0; i < data.length; i++) { %6IlE.*,
int lowIndex = i; k4F"UG-`
for (int j = data.length - 1; j > i; j--) { Op/79]$
if (data[j] < data[lowIndex]) { hi3sOK*r;<
lowIndex = j; m,gy9$
} zdjM%l);
} Q),3&4pM
SortUtil.swap(data,i,lowIndex); lKV\1(`
} "h;;.Y8e
} Rg?{?qK\K
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} R7B,Q(q2-
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Shell排序: O\4+_y
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package org.rut.util.algorithm.support; ||=[kjG~
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import org.rut.util.algorithm.SortUtil; 'ybth
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/** o=-Vt,2{
* @author treeroot <g3du~
* @since 2006-2-2 +^4BO`
* @version 1.0 b.R!2]T]i^
*/ -Wlp=#9
public class ShellSort implements SortUtil.Sort{ {K45~ha9!m
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/* (non-Javadoc) $(@o$%d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g5tjj.
*/ ^"O{o8l>2
public void sort(int[] data) { wC(vr.,F
for(int i=data.length/2;i>2;i/=2){ >bfYy=/
for(int j=0;j insertSort(data,j,i); xS;|jj9
} MX!u$ei
} %XP_\lu]
insertSort(data,0,1); PPoI>J
} 4<G?
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/** jl.okWuiY
* @param data E0"10Qbi
* @param j aho'|%y)
* @param i ORGv)>C|
*/ &1z)fD2
private void insertSort(int[] data, int start, int inc) { jWH{;V&ZV
int temp; 2;r]gT~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0jxO |N2)
} P%zH>K
} op hH9D
} ;^R A!Nj
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} x9 &-(kBU
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快速排序: )W&o?VRfO
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package org.rut.util.algorithm.support; 3@^MvoC
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import org.rut.util.algorithm.SortUtil; ;mDM5.iF
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/** ^"3\iA:
* @author treeroot ;% 2wGT
* @since 2006-2-2 Dt.0YKF
* @version 1.0 TT'Ofvdc
*/ 9mam ~)_ |
public class QuickSort implements SortUtil.Sort{ LmP qLH'(Q
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/* (non-Javadoc) <&4nOt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p6`Pp"J_tr
*/ !7}IqSs
public void sort(int[] data) { e# t3u_
quickSort(data,0,data.length-1); ac9qj
} led))qd@V-
private void quickSort(int[] data,int i,int j){ Y 4d3n
int pivotIndex=(i+j)/2; !RS9%ES_?
file://swap vu=me?m?(
SortUtil.swap(data,pivotIndex,j); #Mh{<gk%ax
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int k=partition(data,i-1,j,data[j]); `>s7M.|X
SortUtil.swap(data,k,j);
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if((k-i)>1) quickSort(data,i,k-1); 7W"/N#G
if((j-k)>1) quickSort(data,k+1,j); sONBQ9
7KU~(?|:h
} $[g_=Z
/** @}WNKS&m
* @param data rz6uDJ"
* @param i J1bA2+5.*e
* @param j bp#:UUO%S
* @return f|U0s
*/
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private int partition(int[] data, int l, int r,int pivot) { $$hv`HE^l
do{ '0:i<`qv#g
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v!H:^!z
SortUtil.swap(data,l,r); 1~J5uB 4
} yPV'pT)
while(l SortUtil.swap(data,l,r); c"7j3/p
return l; w1r$='*I
} BYi)j6"
X eoJ$PfT
} @wp4 |G
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改进后的快速排序: (DDyK[t+VX
a8$kNtA
package org.rut.util.algorithm.support; jij<yM8$g
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import org.rut.util.algorithm.SortUtil; `Gd$:qV
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/** M\oTZ@
* @author treeroot I;7nb4]AmF
* @since 2006-2-2 {fV}gR2
* @version 1.0 k6"KB
*/ 2 -Xdoxw
public class ImprovedQuickSort implements SortUtil.Sort { -Xz&}QA
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private static int MAX_STACK_SIZE=4096; W2Luz;(U
private static int THRESHOLD=10; :!fG; )=
/* (non-Javadoc) QvLZg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LO:fJ{ -
*/ U7iuY~L
public void sort(int[] data) { ^V3v{>D>
int[] stack=new int[MAX_STACK_SIZE]; C+{l7QT$t
Y[Ltrk{
int top=-1; ~u87H?
int pivot; GiFXX
int pivotIndex,l,r; Nt:9 MG>1
6rN(_Oi-
stack[++top]=0; [xb]Wf
stack[++top]=data.length-1; tMp=-"
}_
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while(top>0){ }(XdB:C8
int j=stack[top--]; bEV<iZDq%
int i=stack[top--]; ^pnG0(9
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pivotIndex=(i+j)/2; J;$N{"M
pivot=data[pivotIndex]; *e#<n_%R
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SortUtil.swap(data,pivotIndex,j); a4i:|
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file://partition C0*@0~8$9
l=i-1; Q,h7Sk*
r=j; *Vw\'%p*
do{ p&-'|'![l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); US [dkbKo
SortUtil.swap(data,l,r); dq1:s1
} +>~?m*$
while(l SortUtil.swap(data,l,r); in`aGFQO
SortUtil.swap(data,l,j); 6x)$Dl
BvrB:%_:
if((l-i)>THRESHOLD){ G rmzkNlN
stack[++top]=i; %M|,b!eF
stack[++top]=l-1; hw N?/5
} [+m?G4[
if((j-l)>THRESHOLD){ #@@Mxr'F
stack[++top]=l+1; ;Vik5)D2D
stack[++top]=j; >odbOi+X
} Eodn/
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} XdLCbY
file://new InsertSort().sort(data); {j5e9pg1L|
insertSort(data); <<](XgR(
} e!Y0-=?nf#
/** 4'4\,o
* @param data *KY=\
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*/ 6
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private void insertSort(int[] data) { VvFC -r,=G
int temp; @_:]J1jw7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); / N)W2
} 5zFR7/p{
} 7XKY]|S,'
} x3qW0K8
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} aLJ(?8M@
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归并排序: / kt2c[9
/ XnhmqWm%
package org.rut.util.algorithm.support; !RyO\>:q
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import org.rut.util.algorithm.SortUtil; ,rJXy_
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/** yV_4?nh
* @author treeroot .h0b~nI>>
* @since 2006-2-2 5_XV%-wM
* @version 1.0 :Mm3
gW)
*/ z1^gDjkZ
public class MergeSort implements SortUtil.Sort{ ^c:Fy+fb
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/* (non-Javadoc) Hwo$tVa:=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ut$;ND.-
*/ +w=AJdc
public void sort(int[] data) { JQ4{` =,b
int[] temp=new int[data.length]; Y&/]O$<
mergeSort(data,temp,0,data.length-1); DJgTA]$&
} 6mKjau{r_
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private void mergeSort(int[] data,int[] temp,int l,int r){ +cD!1IT:
int mid=(l+r)/2; }$bF
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if(l==r) return ; fN'HE#W1Xa
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); lNQcYv
for(int i=l;i<=r;i++){ ]E] 2o
temp=data; Bz5-ITX
} o]
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int i1=l; 35tu>^_#V
int i2=mid+1; P-ri=E}>
for(int cur=l;cur<=r;cur++){ a33TPoj
if(i1==mid+1) K_K5'2dE
data[cur]=temp[i2++]; &3yD_P_3
else if(i2>r) i;!H!-sM
data[cur]=temp[i1++]; fu90]upz~
else if(temp[i1] data[cur]=temp[i1++]; 7O,U?p
else R'S0 zp6
data[cur]=temp[i2++]; x' .:&z
} ;vt8R=T
} <!pY$
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} It{ ;SKeo
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改进后的归并排序: `[C!L *#,
8P=o4lO+
package org.rut.util.algorithm.support; {'U
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import org.rut.util.algorithm.SortUtil; @-+Q#
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/** Me=CSQqf<
* @author treeroot qu|B4?Y/CR
* @since 2006-2-2
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* @version 1.0 )n ,P"0
*/ W^G>cC8.L
public class ImprovedMergeSort implements SortUtil.Sort { g&`pgmUX
K# Jk _"W
private static final int THRESHOLD = 10; F+@5C:<?
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/* _U/!4A
* (non-Javadoc) |O"lNUW
* 1bH;!J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \|K;-pL
*/ z`\F@pX%wC
public void sort(int[] data) { &B|D;|7H
int[] temp=new int[data.length]; mQY_`&Jq
mergeSort(data,temp,0,data.length-1); *W
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} nB!&Zq
4n4?4BEn
private void mergeSort(int[] data, int[] temp, int l, int r) { '{(UW.Awo
int i, j, k; Z.M,NR
int mid = (l + r) / 2; 6,9o>zT%H
if (l == r) 3YZs+d.;ib
return; 5sb\r,kW
if ((mid - l) >= THRESHOLD) .B\ 5OI,]
mergeSort(data, temp, l, mid); U{VCZ*0cj
else TY Qwy*
insertSort(data, l, mid - l + 1); AGbhJ=tB
if ((r - mid) > THRESHOLD) /"B?1?qc,=
mergeSort(data, temp, mid + 1, r); 4)("v-p
else S*n@81Z
insertSort(data, mid + 1, r - mid); ;v$4$D]L
Yboiwy,n
for (i = l; i <= mid; i++) { X@f "-\
temp = data; PnoPbk[<
} [h,Q Bz
for (j = 1; j <= r - mid; j++) { L>YU,I\o
temp[r - j + 1] = data[j + mid]; o0pII )v
} Iyyh!MVF
int a = temp[l]; d`F&aC
int b = temp[r]; BN4_:
for (i = l, j = r, k = l; k <= r; k++) { nG;8:f`
if (a < b) { =X.9,$Y
data[k] = temp[i++]; p8]68!=W\F
a = temp; B4mR9HMh
} else { Oj^,m.R
data[k] = temp[j--]; >2Kh0rIH
b = temp[j]; sx`O8t
} AqV7\gdOC
} TEaJG9RU>v
} 19j+lCSvH
GO^_=EMR[
/** =hMY2D
* @param data r}jGUe}d
* @param l o!!yd8~*r
* @param i R@`y>X GNJ
*/ J;f!!<l\
private void insertSort(int[] data, int start, int len) { ,.qMEMm
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yfC^x%d7G
} 1Q.\s_2
} :=[XW?L%x
} }sOwp}FV8X
} }eRD|1
\}
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堆排序: f`&dQ,;
YR;^hs?
package org.rut.util.algorithm.support; #Z<a
HVC>9_:]
import org.rut.util.algorithm.SortUtil; Z%n(O(^L
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/** ]C:l,I
* @author treeroot T
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* @since 2006-2-2 HO''&hz
* @version 1.0 z$kenhFG/
*/ 37RLE1Yf
public class HeapSort implements SortUtil.Sort{ A4]s~Ur
DHY@akhrK
/* (non-Javadoc) ZPD[5)~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /mK?E5H'r1
*/ pm9%%M$
public void sort(int[] data) { uSR~@Lj ~
MaxHeap h=new MaxHeap(); jr3ti>,xV
h.init(data); Zw~+Pb
for(int i=0;i h.remove(); 59Gk3frk(
System.arraycopy(h.queue,1,data,0,data.length); s\P2Bp_{
} @_LN3zP
? mhs$g>
private static class MaxHeap{ %zOh
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void init(int[] data){ i}~SDY
this.queue=new int[data.length+1]; DK
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for(int i=0;i queue[++size]=data; t&(PN%icD
fixUp(size); fhCc! \
} c-Pw]Ju
} =2
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]]"jw{W}A
private int size=0; > z^#
WsDM{1c
private int[] queue; p^pOuy8
#-GJ&m8
public int get() { N72Yq)(
return queue[1]; %G?;!Lz
} f
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$*W6A/%O
public void remove() { _Um d
SortUtil.swap(queue,1,size--); X~xd/M=9^
fixDown(1); ,<Q~b%(3
} U`]T~9I
file://fixdown /By)"
private void fixDown(int k) { 9RWkm%?
int j; RO3oP1@B
while ((j = k << 1) <= size) { 1*
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if (j < size %26amp;%26amp; queue[j] j++; 8x[YZ@iM-
if (queue[k]>queue[j]) file://不用交换 OK{xuX8u
break; ehA;i.n
SortUtil.swap(queue,j,k); Gxax2o
k = j; u@3y&b
} _0 m\[t.
} d;+[i
private void fixUp(int k) { z~\t|Z]G,|
while (k > 1) { ~RD+.A
int j = k >> 1; YQ0)5 }
if (queue[j]>queue[k]) &ciN@nJ|$z
break; p\Lq}tk<
SortUtil.swap(queue,j,k); [>|FB '
k = j; 2:LHy[{5
} T{}fHfM
} ]p!Gt,rYq
|D.O6?v@
} |0z;K:5s
7_# 1Ec|;
} -ti{6:H8
s[Ur~Wvn
SortUtil: \sA*V%n
&Z^l=YH,
package org.rut.util.algorithm; pZZf[p^s|
T%Pp*1/m7
import org.rut.util.algorithm.support.BubbleSort; 5TUNX^AW
import org.rut.util.algorithm.support.HeapSort; /1`cRyS
import org.rut.util.algorithm.support.ImprovedMergeSort; D?M!ra
import org.rut.util.algorithm.support.ImprovedQuickSort; ejXMKPE;
import org.rut.util.algorithm.support.InsertSort; wLV~F[:
import org.rut.util.algorithm.support.MergeSort; tMj1~
R
import org.rut.util.algorithm.support.QuickSort; Q# ?wXX47
import org.rut.util.algorithm.support.SelectionSort; !rhk
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import org.rut.util.algorithm.support.ShellSort; *xR
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/** UMN*]_'+;b
* @author treeroot n,O5".aa<
* @since 2006-2-2 |3?
8)z\n
* @version 1.0 bqx0d=Z~[
*/ k8]O65t|
public class SortUtil { 4l8BQz}sb
public final static int INSERT = 1; J g$xO@.
public final static int BUBBLE = 2; +{53a_q
public final static int SELECTION = 3; AD('=g J
public final static int SHELL = 4; ~]L}p
public final static int QUICK = 5; W0cgI9=9
public final static int IMPROVED_QUICK = 6; insY(.N
public final static int MERGE = 7; 9TxyZL
public final static int IMPROVED_MERGE = 8; [*m2
public final static int HEAP = 9; ~2_lp^Y
P|jF6?C
public static void sort(int[] data) { jQj,q{eA
sort(data, IMPROVED_QUICK); v$w++3H
} !Ngw\@f
private static String[] name={ y~<@x.
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %1:c hvS
}; ~=y3Gd
B3
G6`J1Uk
private static Sort[] impl=new Sort[]{ 8rbG*6
new InsertSort(), +1;'B4
new BubbleSort(), @=uN\) 1
new SelectionSort(), w>~M}Ahj
new ShellSort(), RM*f|j
new QuickSort(), rU#li0
>
new ImprovedQuickSort(), 5@u~3jPd
new MergeSort(), _`a&9i
&
new ImprovedMergeSort(), vH?9\3
new HeapSort() mgkyC5)d
}; I+,SZ]n
%(LvE}[RJ
public static String toString(int algorithm){ s\0K o1
return name[algorithm-1]; E(L<L1:"
} F;D1F+S
=3ADT$YHd
public static void sort(int[] data, int algorithm) { BgRZ<B`
impl[algorithm-1].sort(data); M$&>5n7
} |pWaBh|r
V,LVB_6
public static interface Sort { QB1M3b
public void sort(int[] data); j Selop>N
} 5()Fvae{k
d\Jji 6W
public static void swap(int[] data, int i, int j) { |f NMs
int temp = data; FDLd&4Ex
data = data[j]; [b`6v`x
data[j] = temp; N8+P
} `fW{yb
} !A[S6-18%-