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。 P1Z+XRWOM
插入排序: <4s$$Uw}6%
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package org.rut.util.algorithm.support; oL0Q%_9hW
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import org.rut.util.algorithm.SortUtil; |@pJ]
/** S%n5,vwE
* @author treeroot SrzlR)
* @since 2006-2-2 <]I[|4J 7
* @version 1.0 pQr `$:ga
*/ 6b+\2-eq
public class InsertSort implements SortUtil.Sort{ q)R&npP7
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/* (non-Javadoc) OD5c,IkWB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .zr2!}lB
*/ Omo1p(y
public void sort(int[] data) { S N_!o2F2
int temp; c]jK
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g+8{{o=
} X~XpX7d!
} `btw*{ .[
} +jD?h-]
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} :NJb<%$
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冒泡排序: prE~GO7Z
4eapR|#T
package org.rut.util.algorithm.support; f h05*]r
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import org.rut.util.algorithm.SortUtil; O--
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/** e#0C
* @author treeroot <)c/PI[j
* @since 2006-2-2 %RA8M-
d
* @version 1.0 7eb^^a?
*/ HN,E+dQ
public class BubbleSort implements SortUtil.Sort{ JmB7tRM8
x,YC/J
/* (non-Javadoc) :3WrRT,'L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <+D(GH};
*/ +')\,m "z
public void sort(int[] data) { `Q?rQ3A}
int temp; I]N?}]uZ
for(int i=0;i for(int j=data.length-1;j>i;j--){ fiA_6
if(data[j] SortUtil.swap(data,j,j-1); 5{cbcuG
} 6QVdnXoG/
} nQ >?{"
} d
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} q9rY++Tv
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} ''P.~~ezr5
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选择排序: @,0W(
[#$: X+lw
package org.rut.util.algorithm.support; <A?- *
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import org.rut.util.algorithm.SortUtil; o/273I
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/** mX))*e4k
* @author treeroot p^PAbCP'|3
* @since 2006-2-2 @{16j#'R
* @version 1.0 GZ.Xx
*/ Rn6;@Cw
public class SelectionSort implements SortUtil.Sort { v|Y:'5`V
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/* S*,DX~vig
* (non-Javadoc) }gw
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* e=$p(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AA[(rw
*/ 1fwjW0t
public void sort(int[] data) { Ax &Z=
int temp; @H%)!f]zWt
for (int i = 0; i < data.length; i++) { Zd$a}~4~
int lowIndex = i; OxGKtnAjf
for (int j = data.length - 1; j > i; j--) { :t?Z
if (data[j] < data[lowIndex]) { #
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lowIndex = j; 1#rcxUSi
} aH7i$U&
} wyF'B
SortUtil.swap(data,i,lowIndex); )BI6nU
} c:QZ(8d]L
} 9z>I&vcX
hKa<9>MI`
} J^t-p U
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Shell排序: h"h3SD~
MR$R#
package org.rut.util.algorithm.support; GQ=Zp3[
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import org.rut.util.algorithm.SortUtil; nymF`0HYe1
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/** SrlTwcD
* @author treeroot ]Rah,4?9f
* @since 2006-2-2 z$#q'+$
* @version 1.0
=j,2
*/ tOUpK20q.@
public class ShellSort implements SortUtil.Sort{ Ltv!;^Q5
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/* (non-Javadoc) !e>+O^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '0\,waEu
*/ 9]u=b\fzZ
public void sort(int[] data) { ^,W;dM2
for(int i=data.length/2;i>2;i/=2){ (<bYoWrK#
for(int j=0;j insertSort(data,j,i); =|}_ASbzw
} AkMP)\Q
} 1f3c3PJ
insertSort(data,0,1); RCZ"BxleU
} g=G>4Ua3
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/** R1sWhB99
* @param data Ry47Fze
* @param j aM U0BS"
* @param i 7'IcgTWDZy
*/ g &E3Wc
private void insertSort(int[] data, int start, int inc) { 0^lCZ,uq;
int temp; B3AWJ1o
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [P:+n7= ,l
} #uRj9|E7
} !=uaB.
} \&!qw[;O
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} .z+S@s[O
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快速排序: G'#f*) f
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package org.rut.util.algorithm.support; {>v5~G
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import org.rut.util.algorithm.SortUtil; |Eyn0\OA
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/** "
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* @author treeroot Y5fz_ [("
* @since 2006-2-2 e 48N[p
* @version 1.0 C0K0c6A(4
*/ J@}PBHK+
public class QuickSort implements SortUtil.Sort{ .QvH7
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/* (non-Javadoc) 5+DId7d'n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ndz'^c
*/ 73p7]Uo
public void sort(int[] data) { ,J&\)
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quickSort(data,0,data.length-1); '< .gKo
} |Cm6RH$(
private void quickSort(int[] data,int i,int j){ ?hmuAgOtbh
int pivotIndex=(i+j)/2; +HT?>k
file://swap J?9n4
u
SortUtil.swap(data,pivotIndex,j); X,A]<$ACu%
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int k=partition(data,i-1,j,data[j]); $TX]*hNn
SortUtil.swap(data,k,j); R>D [I.
if((k-i)>1) quickSort(data,i,k-1); ^wIg|Gc
if((j-k)>1) quickSort(data,k+1,j); JHXtKgFX
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} IZ_?1%q>}
/** : i{tqY%
* @param data ";U#aK1p
* @param i ipe8U1Sc
* @param j $
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* @return tJff+n>
*/ DLU[<!C
private int partition(int[] data, int l, int r,int pivot) { 5(423"(y
do{ iOl%-Y
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F|,6N/;!W
SortUtil.swap(data,l,r); g8KY`MBnC&
} pQqbZ3]
while(l SortUtil.swap(data,l,r); |Mt&p#y
return l; !IN@i:m
} xsYE=^uv
]Qd{ '}+
} b9`i Z
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改进后的快速排序: i^R{Ul[
J`W-]3S#
package org.rut.util.algorithm.support; {wcO[bN
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import org.rut.util.algorithm.SortUtil; 9WOu8Ia
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/** U{"f.Z:Ydo
* @author treeroot `-o5&>'nf
* @since 2006-2-2 ,6DD=w 0r
* @version 1.0 b"Zq0M0l
*/ vmvFBzLR
public class ImprovedQuickSort implements SortUtil.Sort { B=r0?%DX"1
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private static int MAX_STACK_SIZE=4096; I'dj.
private static int THRESHOLD=10; R+d<
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/* (non-Javadoc) ^xt9pa$f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wDMjk2YN
*/ &-=K:;x
public void sort(int[] data) { 3524m#4&@
int[] stack=new int[MAX_STACK_SIZE]; K^aj@2K{
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int top=-1; 'l|R5
int pivot; -6`;},Yr
int pivotIndex,l,r; {OCJ(^8i
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stack[++top]=0; 781]THY=
stack[++top]=data.length-1; 1[s0Lz
#]y5zi
while(top>0){ {]`p&@
int j=stack[top--]; x,\!DLq:p
int i=stack[top--]; pv&^D,H,
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pivotIndex=(i+j)/2; yUe+":7k.
pivot=data[pivotIndex]; jgq{pZ#E
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SortUtil.swap(data,pivotIndex,j); I+",b4
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file://partition 8_a3'o%5
l=i-1; \I:.<2i
r=j; NAJVr}4f
do{ 2+:'0Krc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C
) ?uE'
SortUtil.swap(data,l,r); @5E,:)T*wR
} 3,eIB(
while(l SortUtil.swap(data,l,r); ,/,9j{|"j
SortUtil.swap(data,l,j); #kmh:P
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if((l-i)>THRESHOLD){ Mz=!w]qDH
stack[++top]=i; E]} n(
stack[++top]=l-1; V H^AcO
} Ufid%T'
if((j-l)>THRESHOLD){ {]}s#vvy
stack[++top]=l+1; E~hzh /,34
stack[++top]=j; -9Ws=r0R
} !.HnGb+
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} h8 @
file://new InsertSort().sort(data); fQLax
insertSort(data); y9HK |
} [\ )Ge
/** q`|CrOzO
* @param data }qPhx6nP
*/ @!tVr3;N$
private void insertSort(int[] data) { ;^k7zNf-
int temp; LX+5|u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [pOg'
} *=F(KZ
} ]hw-Bu\{
} wNCCH55Pt
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} otriif@+Z
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归并排序: X#J6Umutm
~<O,Vs_C/
package org.rut.util.algorithm.support; {8CWWfHCD
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import org.rut.util.algorithm.SortUtil; ~
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/** IC~ljy]y_
* @author treeroot O%$O(l
* @since 2006-2-2 Q"}s>]k3_
* @version 1.0 &HF]\`RNr
*/ OgMI
public class MergeSort implements SortUtil.Sort{ ]Z@k|Nw
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/* (non-Javadoc) uWc: jP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xs1bxJ_R
*/ Q_}n%P:u
public void sort(int[] data) { JMsHK,(
int[] temp=new int[data.length]; fM":f|
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mergeSort(data,temp,0,data.length-1); &o.iUk
} eP |)SU
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private void mergeSort(int[] data,int[] temp,int l,int r){ ua#K>sur.
int mid=(l+r)/2; {j@+h%sF>+
if(l==r) return ; M&e8zS
mergeSort(data,temp,l,mid); F6&P ~H
mergeSort(data,temp,mid+1,r); mQ,{=C=D
for(int i=l;i<=r;i++){ <%?uYCD
temp=data; iS-K
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} <7RfBR.9
int i1=l; NbDda/7ki
int i2=mid+1; h AAU ecx
for(int cur=l;cur<=r;cur++){ ZKQo#!}
if(i1==mid+1) %EIUAG
data[cur]=temp[i2++]; .zwVCW,u
else if(i2>r) 2IzfP;V?
data[cur]=temp[i1++]; MBO,\t.
else if(temp[i1] data[cur]=temp[i1++]; BhkAQEsWTQ
else }200g_^
data[cur]=temp[i2++]; )0F^NU
} _LsYMUe
} 6o(lObfo
.+uVgSN
} *-7fa0<
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改进后的归并排序: l#ygb|=x
m''i E
package org.rut.util.algorithm.support; TO8\4p*tE
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import org.rut.util.algorithm.SortUtil; )@};lmPR
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/** vFkyfX(
* @author treeroot a|^-z|.
* @since 2006-2-2 E,nYtn|B
* @version 1.0 ^~hhdwu3a
*/ _a:!U^4
public class ImprovedMergeSort implements SortUtil.Sort { 7~k~S>sO
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private static final int THRESHOLD = 10; }G0.Lq+a
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/* jTxChR
* (non-Javadoc) A/W7;D
* {e!uvz,e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Xz`hR
*/ uh5Pn#da^
public void sort(int[] data) { Ev+HW x~Y
int[] temp=new int[data.length]; `*" H/QG
mergeSort(data,temp,0,data.length-1); bCA2ik
} >d{dZD}
M[YTk=IM#
private void mergeSort(int[] data, int[] temp, int l, int r) { 't|Un G
int i, j, k; &c!j`86y*
int mid = (l + r) / 2; (odR'#
if (l == r) 'dIX=/RZ
return; n+{HNr
if ((mid - l) >= THRESHOLD) L$+d.=]
mergeSort(data, temp, l, mid); m]FaEQVoE
else
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insertSort(data, l, mid - l + 1); W.,% 0cZ
if ((r - mid) > THRESHOLD) bA@
/B'
mergeSort(data, temp, mid + 1, r); w]>"'o{{
else M}Nb|V09
insertSort(data, mid + 1, r - mid); 4F05(R8k
#XTY7,@P
for (i = l; i <= mid; i++) { .i {>Z
temp = data; FI]P<)*r
} $; Q$W9+
for (j = 1; j <= r - mid; j++) { 8tb6 gZz
temp[r - j + 1] = data[j + mid];
<^lJr82
} TZ?Os4+
int a = temp[l]; @S`$C
int b = temp[r]; +>JdYV<?0
for (i = l, j = r, k = l; k <= r; k++) { &qJPwO
if (a < b) { weNzYMf%
data[k] = temp[i++]; 5]jx5!N
a = temp; 8 YNu<
} else { K K?Zm_
data[k] = temp[j--]; 7#QLtU
b = temp[j]; A0G)imsW:_
} U?gl"6x
} 7FAIew\r
} L2KG0i`+
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/** o4$Ott%Wm
* @param data U1OFDXHG
* @param l l^.K'Q1~a
* @param i <lUOJV{&\
*/ g %f*ofb
private void insertSort(int[] data, int start, int len) { dXmV@ Noo
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pD"YNlB^
} ?a
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} :z]}ZZ
} !<&m]K
} ^$!987"
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堆排序: _5mc('
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package org.rut.util.algorithm.support; F!JJ6d53y
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import org.rut.util.algorithm.SortUtil; qz 9tr
syv$XeG=}
/** f|U0s
* @author treeroot
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* @since 2006-2-2 petW
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* @version 1.0 hrbo:8SL
*/ 2jl)mL
public class HeapSort implements SortUtil.Sort{ D==Mb~
yPV'pT)
/* (non-Javadoc) c"7j3/p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M`vyTuO3SO
*/ %r;w;`/hA
public void sort(int[] data) { ;#TaZN
MaxHeap h=new MaxHeap(); [ |[>}z:
h.init(data); f6!D L<
for(int i=0;i h.remove(); 4,G w#@
System.arraycopy(h.queue,1,data,0,data.length); mf' ]O,
} S_v(S^x6
fTqC:r|st
private static class MaxHeap{ HSN8O@dy
09S6#; N&
void init(int[] data){ w\w(U
this.queue=new int[data.length+1]; .R5y:O
for(int i=0;i queue[++size]=data; /qU>5;
fixUp(size); MgJ36zM
} y#v"GblM
} |>2FRPK
|.P/:e9
private int size=0; LZ U$
V-!"%fO.s
private int[] queue; ,e`'4H
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public int get() { U47}QDh
return queue[1]; ]XA4;7
} ceT&Y{T
M+`Hg_#Q
public void remove() { (*\jbK
SortUtil.swap(queue,1,size--); ] asBd"
fixDown(1); &|Pu-A"5~
} B*1W`f
file://fixdown 6rN(_Oi-
private void fixDown(int k) { !@A#=(4R4
int j; *[+)7
while ((j = k << 1) <= size) { /mM2M-
if (j < size %26amp;%26amp; queue[j] j++; (08I
if (queue[k]>queue[j]) file://不用交换 3WY$WRv
break; 17.x0gW,
SortUtil.swap(queue,j,k); \5)h tL1F
k = j; C'A]i5
} Q@@v1G\
} S8,Z;y
private void fixUp(int k) { DI|:p!Nx
while (k > 1) { m~hoE8C$
int j = k >> 1; [&?8,Q(
if (queue[j]>queue[k]) mTNVU@TY=
break; cbYLU\!
SortUtil.swap(queue,j,k); \C^;k%{LV
k = j; A"5z6A4WB
} '3IC*o"
} 3jH \yXj
>wHxmq8F5<
}
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//xxSk
} n"*A.
t
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SortUtil: (k4> I"x)
S U04q+
package org.rut.util.algorithm; EHmw(%a|+
ar }F^8Ku
import org.rut.util.algorithm.support.BubbleSort; p xjb^GZ0
import org.rut.util.algorithm.support.HeapSort; N"Q-xK
import org.rut.util.algorithm.support.ImprovedMergeSort; u.43b8!
import org.rut.util.algorithm.support.ImprovedQuickSort; 7vZznN8e
import org.rut.util.algorithm.support.InsertSort; <7-3j{065
import org.rut.util.algorithm.support.MergeSort; qf#Ou
import org.rut.util.algorithm.support.QuickSort; w,n&K6<
import org.rut.util.algorithm.support.SelectionSort; v,^2'C$o
import org.rut.util.algorithm.support.ShellSort; iLD}>=
K_;'-B
/**
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* @author treeroot J4EQhuQ
* @since 2006-2-2 ^z>3+oi
* @version 1.0 6B'd]Fe
*/ $DBJ"8n2
public class SortUtil { 06X4mu{
public final static int INSERT = 1; 8iQ8s;@S&>
public final static int BUBBLE = 2; /x\{cHAt8J
public final static int SELECTION = 3; z$C}V/Ey
public final static int SHELL = 4; h)7hk*I
public final static int QUICK = 5; O1[`2kj^HB
public final static int IMPROVED_QUICK = 6; }&!fT\4
public final static int MERGE = 7; SA!P:Q?h
public final static int IMPROVED_MERGE = 8; u4hC/!
public final static int HEAP = 9; e*K1";
Q0l[1;$#
public static void sort(int[] data) { o y{
{d
sort(data, IMPROVED_QUICK); Qx<86aKkF
} v@n0ma=
private static String[] name={ Y~,ZBl,
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rW),xfo0
}; pQ2'0u5w5
jxeZ,w o
private static Sort[] impl=new Sort[]{ 'wA4}f
new InsertSort(), V[#eeH)/
new BubbleSort(), Ct@O S227x
new SelectionSort(), xWR<>Og.
new ShellSort(), G)cEUEf
d
new QuickSort(), u]`ur#_
new ImprovedQuickSort(), u?xXZ]_u-
new MergeSort(), `!- w^~c
new ImprovedMergeSort(), V
d`}F0WD
new HeapSort() jc0Trs{Jf
}; DD5cUlOSu
%i6/=
'u
public static String toString(int algorithm){ Pm7lP5
return name[algorithm-1]; WA6reZ
} xX?9e3(
oeYUsnsbi
public static void sort(int[] data, int algorithm) { D\^mh{q(
impl[algorithm-1].sort(data); (:P#l&f
} D|;O9iks#
XjX
public static interface Sort { AYts
&+
public void sort(int[] data); t^rw@$"}
} z|l*5@p
tq3Wga!5
public static void swap(int[] data, int i, int j) { 4.RQ3SoDa
int temp = data; ]R__$fl`8
data = data[j]; H];B?G';C
data[j] = temp; mDB
} {Mx(|)WkL
} +{J8,^z#