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。 ;a
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插入排序:
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package org.rut.util.algorithm.support; r2\c'9uH
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import org.rut.util.algorithm.SortUtil; j}f[W [2
/** HC*?DJ,
* @author treeroot ]s_8A`vm
* @since 2006-2-2 H'DVwnn>ik
* @version 1.0 ,<`)>2 'o
*/ ?X9UTOx
public class InsertSort implements SortUtil.Sort{ :Ht;0|[H
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/* (non-Javadoc) YcDe@Zuwn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F #`=oM$5
*/ fjG&`m#"
public void sort(int[] data) { wTc)S6%7
int temp; j:,9%tg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HrM$NRhu
} rD
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} O_~7Glu
} B^v8,;jZT
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} =9wy/c$
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冒泡排序: L] %l51U
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package org.rut.util.algorithm.support; uLR<FpM
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import org.rut.util.algorithm.SortUtil; l'[A?%L%{
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/** g>JLDQdc
* @author treeroot ;i<jhNA
* @since 2006-2-2 j5$GFi\kB
* @version 1.0 o\VUD
*/ I/6)3su%
public class BubbleSort implements SortUtil.Sort{ N2C7[z+l`
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/* (non-Javadoc) U/ od~29
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j<<3Pr
*/ `G9 l
public void sort(int[] data) { S\i@s_
int temp; |{>ER,<-
for(int i=0;i for(int j=data.length-1;j>i;j--){ pCi#9=?N
if(data[j] SortUtil.swap(data,j,j-1); h^UKT`9vt
} #W>QY Tp
} <AH1i@4
} /] ^#b
} GL$De,V
sgUud_r)4
} *ISZlR\#
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选择排序: KngTc(^_D
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package org.rut.util.algorithm.support; mHc>"^R
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import org.rut.util.algorithm.SortUtil; as yZe
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/** q? qC
* @author treeroot 'a6<ixgo0
* @since 2006-2-2 O^Q7b7}y
* @version 1.0 nI.x
*/ :Qt
public class SelectionSort implements SortUtil.Sort { Q4*?1`IsR
ElhRF{R
/* !>,m&O-x
* (non-Javadoc) {76c%<`WaP
* Rhc-q|Lz8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FY{e2~gi
*/ TfYVw~p_ %
public void sort(int[] data) { soA|wk\A
int temp; #G" xNl
for (int i = 0; i < data.length; i++) { 8Me:Yp_Xt
int lowIndex = i; PXzsj.
for (int j = data.length - 1; j > i; j--) { |1b_*G4|
if (data[j] < data[lowIndex]) { %
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lowIndex = j; >{gPN"S"a
}
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} )L{ghy
SortUtil.swap(data,i,lowIndex); ^DeERB
} R0ID2:i]F
} eV:9y
C?v[Z]t
}
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Shell排序: lGwl1,=
RqEH|EUZ
package org.rut.util.algorithm.support; hI%bjuq
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import org.rut.util.algorithm.SortUtil; f"7O "6
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/** IN8>ZV`j)
* @author treeroot {'?)FX*W
* @since 2006-2-2 0.T4{JS#
* @version 1.0 u0aJu
*/ lO&3{dOYE
public class ShellSort implements SortUtil.Sort{ ]D[DU]K
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/* (non-Javadoc) $3`>{3x$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;<yd^Xs
*/ {~!q`Dr3?q
public void sort(int[] data) { @1.QEyXG
for(int i=data.length/2;i>2;i/=2){ ?0?
R
for(int j=0;j insertSort(data,j,i); Q_* "SRz
} 7S/G
B
} HEA#bd\
insertSort(data,0,1); \^ghdU
} Dd;Nz
JlMT<;7\
/** #e'
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* @param data ]f+ csB
* @param j p' M%XBu
* @param i Ox#\M0Wn$3
*/ 3vcO!6Z5
private void insertSort(int[] data, int start, int inc) { t`*! w|}(1
int temp; ~\{^%~[48
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ee%fqVQ8P
} ~gB>) ]
} _ZY)M
} ?\C"YG69T
C<KrMRWh^
} (Yp+bS(PU*
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快速排序: eF[63zx5*
TIp:FW[
package org.rut.util.algorithm.support; Ee`1F#c
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import org.rut.util.algorithm.SortUtil; ?5_7;Ha
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/** 4`JH&))}
* @author treeroot iw*Nq,(
* @since 2006-2-2 afYc\-"
* @version 1.0 )Ke*JJaq
*/ \
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public class QuickSort implements SortUtil.Sort{ :_!8
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/* (non-Javadoc) CPNL
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5:'hj$~|\1
*/ B}PIRk@a1
public void sort(int[] data) { K~@Mg1R
quickSort(data,0,data.length-1); '1M7M(va
} gy&[?m6M=
private void quickSort(int[] data,int i,int j){ W5SJ^,d)J
int pivotIndex=(i+j)/2; |V<h=D5W
file://swap J_s>N
SortUtil.swap(data,pivotIndex,j); <.Nx[!'~&d
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int k=partition(data,i-1,j,data[j]); H54R8O$
SortUtil.swap(data,k,j); &|/| ''A)
if((k-i)>1) quickSort(data,i,k-1); 5 ~TdD6}
if((j-k)>1) quickSort(data,k+1,j); [Q=dCX9%
ABUSTf<
} bV ZMW/w
/** zN
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* @param data v{}#?=I5
* @param i ,"B+r6}EF
* @param j Iu$K i
* @return =i~}84>
*/ -jMJAYj V
private int partition(int[] data, int l, int r,int pivot) { +nJUFc
do{ lo[.&GD
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =$]uoA
SortUtil.swap(data,l,r); )_U<7"~0l
} >nzdnF_&zW
while(l SortUtil.swap(data,l,r); xQUu|gtL4
return l; !Q#{o^{Y~
} m=YU2!Mb
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} kT;S4B
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改进后的快速排序: 5}`_x+$%(`
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package org.rut.util.algorithm.support; 3YVi"
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import org.rut.util.algorithm.SortUtil; OoWyPdC+P
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/** 'Fmvu
* @author treeroot St e=&^
* @since 2006-2-2 Y.*y9)#S6
* @version 1.0 >%wLAS",w
*/ tg{H9tU;
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; >Z1sb n
private static int THRESHOLD=10; u,&^&0K,
/* (non-Javadoc) v8y1b%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *hw\35%P`?
*/ b[`Yi1^]%g
public void sort(int[] data) { 92EWIHEWZ
int[] stack=new int[MAX_STACK_SIZE]; Z?\2F%
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int top=-1; ~$~5qwl
int pivot; p\<u6v ~J
int pivotIndex,l,r; %"P,1&\^
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stack[++top]=0; kXf'5p1
stack[++top]=data.length-1; lBaR
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while(top>0){ ~c&bH]cj
int j=stack[top--]; bFW =ylF9
int i=stack[top--]; m@^1JlH
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pivotIndex=(i+j)/2; gM
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pivot=data[pivotIndex]; >/8y GBD
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SortUtil.swap(data,pivotIndex,j); !_"fP:T>
Y*UA,<-
file://partition q}]XYys
l=i-1; UXh9:T'%
r=j; `DC2gJKk%
do{ )Q.>rX,F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5=Di<! a;
SortUtil.swap(data,l,r); Xwhui4'w
} ( vca&wI!
while(l SortUtil.swap(data,l,r); 9T1ZL5
SortUtil.swap(data,l,j); Nd;Ku6
hC\6-
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if((l-i)>THRESHOLD){ Y*14v~\'
stack[++top]=i; /K(o]J0F
stack[++top]=l-1; THS.GvT9[
} |cR;{Z8?_
if((j-l)>THRESHOLD){ ` eXaT8
stack[++top]=l+1; 'nwx9]q
stack[++top]=j; ~x|F)~:0=
} /C6k+0ApMT
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e
} 8@tPm$
file://new InsertSort().sort(data); ](s'L8(x
insertSort(data); 6*3.SGUY
} RS^lKJ1 U
/** L>3x9
* @param data eN^qG
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*/ 43@{JK9G
private void insertSort(int[] data) { (Kv#m
3~
int temp; [xGf,;Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7eiV{ tYF
} %;rHrDP(>
} Wh.?j>vB
} |b)Y#)C;
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} !s&NT @ S
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归并排序: !Y[lQXv
XR;eY:89
package org.rut.util.algorithm.support; eb =D/
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import org.rut.util.algorithm.SortUtil; 7BJzMlJ1Y
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/** o<|P9#(U"
* @author treeroot < Pky9o;
* @since 2006-2-2 MZT23[+
* @version 1.0 <x<"n t
*/ ;u>DNG|.
public class MergeSort implements SortUtil.Sort{ `nZ )>
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/* (non-Javadoc) 1fZ(l"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e=+?K5q{P(
*/ 7*?}:
public void sort(int[] data) { Mw;sLsu
int[] temp=new int[data.length]; 2u5|8
mergeSort(data,temp,0,data.length-1); HlH64w2^R
}
%*L:sTj(
%|^fi8!:|
private void mergeSort(int[] data,int[] temp,int l,int r){ Qx+%"YO
int mid=(l+r)/2; [x,>?~6ek
if(l==r) return ; 4x 8)gE
mergeSort(data,temp,l,mid); =fO5cA6Z
mergeSort(data,temp,mid+1,r); /!3@]xz*
for(int i=l;i<=r;i++){ PEW=@xj2y
temp=data; %@6}GmK^
} jW
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int i1=l; LILQ\I<<'
int i2=mid+1; <y?r!l=Am
for(int cur=l;cur<=r;cur++){ /\4'ddGU
if(i1==mid+1) C,v(:ZE$J7
data[cur]=temp[i2++]; {o.FlX
else if(i2>r) *tK\R&4,4s
data[cur]=temp[i1++]; 'LO^<
else if(temp[i1] data[cur]=temp[i1++]; n6BQk2l
else -(~!Jo_*'
data[cur]=temp[i2++]; Yi$vg
} *U
P@9D
} v#U"pn|M
:{q<{^c
} u[DfzH
N-e @j4WU
改进后的归并排序: [<
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a
0GpfW$t
package org.rut.util.algorithm.support; yrC7F`.
v~@pMA$(h
import org.rut.util.algorithm.SortUtil; V{:A3C41
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/** xUa{1!Y8
* @author treeroot YLiSbLz1
* @since 2006-2-2 4\4FolsK
* @version 1.0 F!]lU`z)=
*/ 7~5ym15*
public class ImprovedMergeSort implements SortUtil.Sort { SV~cJ]F
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private static final int THRESHOLD = 10; >8qQK r\"
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/* 7r~~Y%=C|
* (non-Javadoc) Lcg)UcB-#
* g.zEn/SM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yL2o}ZbS
*/
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public void sort(int[] data) { &i$ldR
int[] temp=new int[data.length]; Stu4t==U
mergeSort(data,temp,0,data.length-1); ,v';>.]
} v33dxZ'
'U\<IL#U
private void mergeSort(int[] data, int[] temp, int l, int r) { [Z}9>~m
int i, j, k; b"vv>Q~U
int mid = (l + r) / 2; V;:j ZpG
if (l == r) [&#/]Ul'
return; 3<
2}V
if ((mid - l) >= THRESHOLD) aD=A^ktx
mergeSort(data, temp, l, mid); SU/BQ3
else *rIk:FehLB
insertSort(data, l, mid - l + 1); '>' wK.
if ((r - mid) > THRESHOLD) 5sx1Zq7
mergeSort(data, temp, mid + 1, r); OslL~<
else cM$P`{QrM
insertSort(data, mid + 1, r - mid); 8>WC5%f*
2&^]k`Aj6D
for (i = l; i <= mid; i++) { ihP|E,L=L
temp = data; \4-"L>
} OeS\7
for (j = 1; j <= r - mid; j++) {
ng_^
temp[r - j + 1] = data[j + mid]; y*tZ
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} C
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int a = temp[l]; t\%HX.8[;%
int b = temp[r]; S'_-G;g.
for (i = l, j = r, k = l; k <= r; k++) { 7:)n$,31FW
if (a < b) { s3R(vd
data[k] = temp[i++]; K%F,='P}
a = temp; $0lD>yu
} else { MBhWMCN2
data[k] = temp[j--]; BE_ay-
b = temp[j]; .7.b:Dn0
} 9/ibWa\.
} r?Wk<>%>
} .xH5fMj,"
83Q4On
/** (+FfB"3]
* @param data GJtZ&H
* @param l k|lcc^[0
* @param i }DK7'K
*/ znaUB v_
private void insertSort(int[] data, int start, int len) { 8\5 T3AF
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yl1gx
} C86J
IC"
} Dm-zMCf}Q
} I/L_@X<*r
} 7w/4QiI
pnbIiyV
堆排序: fDvl/|62{
Db1pW=66:
package org.rut.util.algorithm.support; Xt@Z}B))pu
cxr=k%~}J
import org.rut.util.algorithm.SortUtil; INi]R^-
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/** b7wvaRe.
* @author treeroot V&\[)D'c
* @since 2006-2-2 +(1zH-^.
* @version 1.0 )XzI
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*/ X .5aMm
public class HeapSort implements SortUtil.Sort{ HP3lz,d
w6W}"Uw
/* (non-Javadoc) /|eA9 ]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jg\Z;_!W
*/ ZfgJ.<<
public void sort(int[] data) { N,;5{y1;J
MaxHeap h=new MaxHeap(); S7L=#+Z
h.init(data); I$0)Px%z
for(int i=0;i h.remove(); ,Qnd3[2[
System.arraycopy(h.queue,1,data,0,data.length); oze&
} ~?FpU
)>`G
private static class MaxHeap{ 6DuEL=C
[3--(#R\}?
void init(int[] data){ 7TDy.]
this.queue=new int[data.length+1]; `R=HKtr?
for(int i=0;i queue[++size]=data; |]ZYa.+:
fixUp(size); =MLcm^b
} OC<5E121>Y
} .P MZX%*v
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private int size=0; Q&eQQ6b^Ih
M #=]
k
private int[] queue; cQ"~\
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public int get() { @Q/-s9b
return queue[1]; 82QGS$0V
} 8_6Q~
OPx`u
public void remove() { (;57 Vw
SortUtil.swap(queue,1,size--); *]VFvh
fixDown(1); bdibaN-h
} '_/Bp4i
file://fixdown fmiz,$O4?
private void fixDown(int k) { x>* Drm 7
int j; v!ujj5-$I
while ((j = k << 1) <= size) { uec!RKE
if (j < size %26amp;%26amp; queue[j] j++; x\s|n{
if (queue[k]>queue[j]) file://不用交换 ^,;z|f'%*
break; Tp_L%F
SortUtil.swap(queue,j,k); KFvQ
k = j; j;fpQ_KL
} [zlN!.Z
}
X~<("
private void fixUp(int k) { *EZHJt9
while (k > 1) { U9A~9"O
int j = k >> 1; ZOQTINf
if (queue[j]>queue[k]) /s[l-1zW
break; eL\;Nf+Zp
SortUtil.swap(queue,j,k); >ey\jDr#O
k = j; 43Qtj$F
} 7qg{v9|,
} ]jaQ[g$F
P3nb2.
} N.]qU d
8qu2iPOcZ
} V%YiAr>
IS#FiH
SortUtil: zOqn<Y@
!>e5z|1
package org.rut.util.algorithm; KOp162X>r
#P?6@\
import org.rut.util.algorithm.support.BubbleSort; >9(hUH
import org.rut.util.algorithm.support.HeapSort; ~D5\O6mU-
import org.rut.util.algorithm.support.ImprovedMergeSort; OQ>x5?um
import org.rut.util.algorithm.support.ImprovedQuickSort; mysetv&5
import org.rut.util.algorithm.support.InsertSort; R&Jm
+3N
import org.rut.util.algorithm.support.MergeSort; CO2C{~Q5
import org.rut.util.algorithm.support.QuickSort; ]zQo>W$
import org.rut.util.algorithm.support.SelectionSort; w[!^;#
import org.rut.util.algorithm.support.ShellSort; gUpb4uN
#z2rzM@/:
/** 4)"n
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* @author treeroot
}f8Uc+
* @since 2006-2-2 u#V5?i
* @version 1.0 `>?ra-
*/ {
Q`QX`#
public class SortUtil { Z6_N$Z.A
public final static int INSERT = 1; G-He" 4& $
public final static int BUBBLE = 2; OV%Q3$15
public final static int SELECTION = 3; c=L2%XPP
public final static int SHELL = 4; ,>:;#2+og
public final static int QUICK = 5; Sk:ws&D1u
public final static int IMPROVED_QUICK = 6; t0nI ('LX,
public final static int MERGE = 7; k7>|q"0C
public final static int IMPROVED_MERGE = 8; *hQTO=WF
public final static int HEAP = 9; 20iq2
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public static void sort(int[] data) { spGB)k,^
sort(data, IMPROVED_QUICK); |/2y-[;:
} yI ld75S`
private static String[] name={ eXKo.JL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B|4X}*@SX
}; )~+ e`q
tvu!< dxZ
private static Sort[] impl=new Sort[]{ E7CH^]x
new InsertSort(), Wo7F
new BubbleSort(), >OG:vw)E
new SelectionSort(), phn9:{TI
new ShellSort(), nD)K}4
new QuickSort(), P4F3Dc
new ImprovedQuickSort(), C!R1})_^
new MergeSort(), dd\n8f
new ImprovedMergeSort(), O=$~O\}b
new HeapSort() n< ud> JIb
}; ~<k,#^"}X
<%Ostqj
public static String toString(int algorithm){ i%g#+Gw
return name[algorithm-1]; L dm?JrU
} '^Ql]% _
` bdZ/*E
public static void sort(int[] data, int algorithm) { .hba*dV
impl[algorithm-1].sort(data); z%e8K(
} K,w"_T
UQ +?\wi*
public static interface Sort { F@* +{1R
public void sort(int[] data); )QG<f{wS
} ;Wl+zw
CWNx4)ZGw
public static void swap(int[] data, int i, int j) { 8S<@"v
int temp = data; B?)@u|0
data = data[j]; raCi 8
data[j] = temp; uFLx
} d , Y#H0`
} &CIVL#];e