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。 6{Q-]LOc[.
插入排序: eqsmv[
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package org.rut.util.algorithm.support; 3ie
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import org.rut.util.algorithm.SortUtil; h]s~w
/** eNK[P=-
* @author treeroot OtmDZ.t;`
* @since 2006-2-2 M{{kO@P"9
* @version 1.0 Z)M
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*/ _eOC,J<-~
public class InsertSort implements SortUtil.Sort{ ;=jF9mV.
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/* (non-Javadoc) ]i$y;]f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YE~IO5
*/ !>n!Q*\(Ov
public void sort(int[] data) { b4i=%]v8
int temp; hdHz", )
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1o%#kf
} 3Iv^
} CqlxE/|
} Y?NL|cW4
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} suwR`2
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冒泡排序: ]s AuL!
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package org.rut.util.algorithm.support; jez0 A
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import org.rut.util.algorithm.SortUtil; uBx\xeI
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/** #Az#_0=
* @author treeroot L)J1yw
* @since 2006-2-2 f7~dn#<@
* @version 1.0 'E3T fM
*/ 1vj@qw3
public class BubbleSort implements SortUtil.Sort{ 4d5c]%
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/* (non-Javadoc) z&amYwQcI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 A ?{}c
*/ =wdh#{
public void sort(int[] data) { R+Hu?Dv&F
int temp; |p&EP2?T
for(int i=0;i for(int j=data.length-1;j>i;j--){ BZ?3=S1*
if(data[j] SortUtil.swap(data,j,j-1); CF{b Yf^%
} &/]en|f"
} vS>'LX
} 4@@Sh`E:
} Vb`Vp(>AU
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} |6JKB'
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选择排序: `xLsD}32
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package org.rut.util.algorithm.support; 5lG\Z?
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import org.rut.util.algorithm.SortUtil; MONX&$
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/** Y0 a[Lb0
* @author treeroot ?l/6DT>e
* @since 2006-2-2 Q:(mK* _
* @version 1.0 W/!P1M n
*/ djOjd,
public class SelectionSort implements SortUtil.Sort { 5;/n`Bd
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/* #y:D{%Wp
* (non-Javadoc) g8##Be
* 51q|-d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u]IbTJ'
*/ kWXLncE
public void sort(int[] data) { Kd5'2"DI
int temp; wc;n=
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for (int i = 0; i < data.length; i++) { qg
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int lowIndex = i; z3+@[I$
for (int j = data.length - 1; j > i; j--) { .d1ff];
if (data[j] < data[lowIndex]) { 9;e!r DW,#
lowIndex = j; kP
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} f$xXR$mjf
} mQ:{>`
SortUtil.swap(data,i,lowIndex); q,,
} \0b}Z#'0
} f,cd=vGj
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} *H
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Shell排序: ^9[Q;=R
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package org.rut.util.algorithm.support; 7y'uZAF
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import org.rut.util.algorithm.SortUtil; `pfIgryns
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/** @Dh2@2`>
* @author treeroot FOXSs8"c]!
* @since 2006-2-2 LORcf 1X/
* @version 1.0 ,2S!$M
*/ ]c/E7|0Q
public class ShellSort implements SortUtil.Sort{ 2FIL@f|\7z
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/* (non-Javadoc) al9wNtMT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q1,sjLO-a
*/ YExgUE|
public void sort(int[] data) { l^lb ^"o
for(int i=data.length/2;i>2;i/=2){ Y$=jAN
for(int j=0;j insertSort(data,j,i); bE _8NA"2
} qiNVaV\wr|
} g_Z
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insertSort(data,0,1); @sXv5kZ:
} Al-`}g+^
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/** ==dKC;
* @param data MET9rT
* @param j Y MX9Z||
* @param i e}UQN:1
*/ RuPnWx!
private void insertSort(int[] data, int start, int inc) { .Kb3VNgwvm
int temp; HuevDy4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `L'g<VK;
} RxP H[7oZ
} yix[zfQt0
} 6zi>Q?] 1
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} ]q]xU,
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快速排序: G !q[NRu
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package org.rut.util.algorithm.support; W7S~~
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import org.rut.util.algorithm.SortUtil; UkL1h7}a\
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/** y}?|+/ dN
* @author treeroot OEW'bT)
* @since 2006-2-2 ETp?R WXX
* @version 1.0 C~ 1]
*/ 1R2IlUlzFr
public class QuickSort implements SortUtil.Sort{ &9yZfp
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/* (non-Javadoc) _'=,c"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40t xZFQ0
*/ 5;a*Xf%V
public void sort(int[] data) { IO%kXF.[
quickSort(data,0,data.length-1); 4{P+p!4
} "_{NdV|a
private void quickSort(int[] data,int i,int j){ /I%z7f91O
int pivotIndex=(i+j)/2; n4K!Wv&u
file://swap Rf:.'/<^
SortUtil.swap(data,pivotIndex,j); l(t&<O(m9
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int k=partition(data,i-1,j,data[j]); $^]K611w9
SortUtil.swap(data,k,j); =Hi@q
"
if((k-i)>1) quickSort(data,i,k-1); GcBqe=/B!
if((j-k)>1) quickSort(data,k+1,j); Yuvi{ 0
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} GK@OdurAR
/** 6r)P&J
* @param data !}&|a~U@`k
* @param i `'YX>u /
* @param j idI w7hi4
* @return Tq1\
*/ kaBjA*
private int partition(int[] data, int l, int r,int pivot) { S_ATsG*(
do{ I?e5h@uE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xRh 22z
SortUtil.swap(data,l,r); (S[z
} -k'<6op
while(l SortUtil.swap(data,l,r); G@8)3 @
return l; H[=\_X1o(
} G3.aw
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} vSgT36ZF
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改进后的快速排序: hG1:E:}
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package org.rut.util.algorithm.support; @*6fEG{,q
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import org.rut.util.algorithm.SortUtil; g) X3:=['
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/** 8Y($ F2
* @author treeroot M(-)\~9T
* @since 2006-2-2 Ca2r<|uA
* @version 1.0 LPvp
(1
*/ !_Lmrs
public class ImprovedQuickSort implements SortUtil.Sort { Sc<dxY@w7-
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private static int MAX_STACK_SIZE=4096; '/d51
private static int THRESHOLD=10; pj>R9zpn_
/* (non-Javadoc) qmrT dG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _#8hgwf>
*/ aacy5E
public void sort(int[] data) { pjeNBSu6
int[] stack=new int[MAX_STACK_SIZE]; sZ `Tv[
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int top=-1; &G{GLP?H
int pivot; l]*RiK2AC
int pivotIndex,l,r; 7)Toj
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stack[++top]=0; eM7@!CdA9q
stack[++top]=data.length-1; f|d~=\0y
\""^'pP@
while(top>0){ Bx?3E^!T
int j=stack[top--]; @v-^j
int i=stack[top--]; }[p{%:tP
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pivotIndex=(i+j)/2; '.A!IGsj
pivot=data[pivotIndex]; 8`4M4"lj
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SortUtil.swap(data,pivotIndex,j); JF=R$! 5
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file://partition {[y6qQm
l=i-1; 5!c/J:z
r=j; IiYL2JS;t|
do{ xR+vu>f
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sx,$W3zI'G
SortUtil.swap(data,l,r); @Z5q2Q
} &^=Lr:I
while(l SortUtil.swap(data,l,r); s QDgNJbU
SortUtil.swap(data,l,j); T4eJ:u* ;
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if((l-i)>THRESHOLD){ Y{Z&W9U
stack[++top]=i; }Fe~XO`
stack[++top]=l-1; BQu
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} o[C^z7WG0
if((j-l)>THRESHOLD){ "j>X^vn
stack[++top]=l+1; {R1]tGOf
stack[++top]=j; QoD_`d
} J/1kJ@5
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} (:oF\
file://new InsertSort().sort(data); >AJ/!{jD*
insertSort(data); N?\X2J1
} (Y1*Bs[l
/** <A3%182
* @param data bWFa{W5!
*/ ?ANWI8'_j
private void insertSort(int[] data) { ~f<']zXv
int temp; ~ k*]Z8Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2yN!yIPR
} 15:9JVH3D
} !0{SVsc)
} ]kj^T?&n.
XC<fNK
} >"W^|2R
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归并排序: !(d]f0
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package org.rut.util.algorithm.support; g~U(w
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import org.rut.util.algorithm.SortUtil; TOG:`FID
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/** N[{rsUBd
* @author treeroot Z-@nXt
* @since 2006-2-2 &L6Ivpj-
* @version 1.0 N/a4Gl(
*/ |Ajd$+3
public class MergeSort implements SortUtil.Sort{ DB}Uzw|
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/* (non-Javadoc) } z'Jsy[s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) De$~ *2
*/ |$WHw*F^
public void sort(int[] data) { 9*"
int[] temp=new int[data.length]; -]3 K#M)s
mergeSort(data,temp,0,data.length-1); (UkP AE
} hh;kBv07o
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private void mergeSort(int[] data,int[] temp,int l,int r){ u>>|ZPe
int mid=(l+r)/2; a%#UF@I
if(l==r) return ; Tm%5:/<8
mergeSort(data,temp,l,mid); -` ]9o3E7H
mergeSort(data,temp,mid+1,r); kowS| c#
for(int i=l;i<=r;i++){ <\229
temp=data; )%C.IZ_s2
} 4$-R|@,|_
int i1=l; I;4quFBlMu
int i2=mid+1; N&8$tJ(hhx
for(int cur=l;cur<=r;cur++){ ( 5LCy?-6
if(i1==mid+1) P1F-Wy1
data[cur]=temp[i2++]; V^7.@BeT
else if(i2>r) PT>b%7Of
data[cur]=temp[i1++]; 8h]
TI_
else if(temp[i1] data[cur]=temp[i1++]; f&-`+V}U
else f+e"`80$*C
data[cur]=temp[i2++]; 1W|jC
} Ca-"3aQkc
} "L>'X22ed
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} hFV,FBsAO
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改进后的归并排序: & SXw=;B
yP58H{hQM8
package org.rut.util.algorithm.support; 7?dWAUF
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import org.rut.util.algorithm.SortUtil; b++r#Q
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/** C'#KTp4!1
* @author treeroot 0["93n}r
* @since 2006-2-2 9#DXA}
* @version 1.0 Xi="gxp$%
*/ yZlT#^$\
public class ImprovedMergeSort implements SortUtil.Sort { Nd0tR3gi7
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private static final int THRESHOLD = 10; 6Zi{gx
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/* -y.cy'$f
* (non-Javadoc) >LBA0ynh
{
* -Y_,
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S,5ok0R
*/ >a8iY|QY
public void sort(int[] data) { [8QK @5[
int[] temp=new int[data.length]; 93*csO?Db
mergeSort(data,temp,0,data.length-1); \[9VeqMU
} N[Z`tk?-
&d6@SQ
private void mergeSort(int[] data, int[] temp, int l, int r) { 12`u[O}\}-
int i, j, k; Zc7;&cz
int mid = (l + r) / 2; 7|}4UXr7y
if (l == r) KVZB`c$<t
return; R3B+vLGX
if ((mid - l) >= THRESHOLD) qO{z{@jo55
mergeSort(data, temp, l, mid); ZthT('"a
else JBY.er`6C
insertSort(data, l, mid - l + 1); Nh\vWAz9
if ((r - mid) > THRESHOLD) 'rhgM/I
mergeSort(data, temp, mid + 1, r); Lu#q o^
else ,z&S;f.f
insertSort(data, mid + 1, r - mid); <rzP
dN2JOyS
for (i = l; i <= mid; i++) { NK|UeL7ght
temp = data; GxdAOiq;
} &nEL}GM)E
for (j = 1; j <= r - mid; j++) { |k.'w<6mb9
temp[r - j + 1] = data[j + mid]; #xtH6\X
} xmg3,bO
int a = temp[l]; eiK_JPF A-
int b = temp[r]; *PF<J/Pr
for (i = l, j = r, k = l; k <= r; k++) { .n<vhLDQn
if (a < b) { $zP5Hzx
data[k] = temp[i++]; )Do 0
a = temp; U[wx){[|
} else { bq/Aopfr
data[k] = temp[j--]; kj6:P$tH
b = temp[j]; "2mPWRItO
} y% bIO6u:
} 4c5BlD
} wnS,Jl
f.w",S^
/** PK]3uh
* @param data +byOThuE
* @param l &ijz'Sg3
* @param i o/N!l]r
*/ =x<N+vjXY
private void insertSort(int[] data, int start, int len) { dlYpbw}W&<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AE rPd)yk0
} =|oi0
} %]+R>+
} BqNsW
(+
} 6ll!7U(9(
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堆排序: 5/"$_7"{a
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package org.rut.util.algorithm.support; }n^Rcz6HeO
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import org.rut.util.algorithm.SortUtil; $d*9]M4
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/** kY)Vr3uGA
* @author treeroot (=j;rfvP
* @since 2006-2-2 b~aM=71
* @version 1.0 ](Fey0@
*/ /DAR'9@h
public class HeapSort implements SortUtil.Sort{ J?o
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/* (non-Javadoc) TUfj\d,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v0DDim?cc
*/ _=mzZe[
public void sort(int[] data) { R*r4)+gd
MaxHeap h=new MaxHeap(); UF+Qx/4h0
h.init(data); 2>o[
for(int i=0;i h.remove(); *2h%dT:,%
System.arraycopy(h.queue,1,data,0,data.length); G4(R/<J,BQ
} ?Bf>G]zx
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private static class MaxHeap{ `w!XO$"]Z
c5ij2X|I
void init(int[] data){ Y5aG^wE[:
this.queue=new int[data.length+1]; JI>Y?1i0O
for(int i=0;i queue[++size]=data; $cSUB
fixUp(size); }a;xs};X;
} R1zt6oY
} #Y=^4 U`
gH//@`6
private int size=0; T]tP!a;K
+p%3pnj:K
private int[] queue; bv4umL /
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public int get() { t\,Y<9{w
return queue[1]; n{gEIUo#
} q%sZV>
lE k@I"
public void remove() { -PpcFLZ|
SortUtil.swap(queue,1,size--); COw"6czX/
fixDown(1); T8+[R2_
} i.E2a)
file://fixdown %axr@o[
private void fixDown(int k) { x_Ev2
c'4
int j; }5+^
while ((j = k << 1) <= size) { sa'1hX^@
if (j < size %26amp;%26amp; queue[j] j++; /"X_{3dq?
if (queue[k]>queue[j]) file://不用交换 x0# Bc7y
break; 0=>$J
WF
SortUtil.swap(queue,j,k); Qj^Uz+b
k = j; CV0id&Nv
} Lap?L/NS
} %Y&48''"
private void fixUp(int k) { M/ 64`lcb
while (k > 1) { j!4{+&Laq
int j = k >> 1; SW9
C
8Q
if (queue[j]>queue[k]) z|>TkCW6
break; .`IhxE~mN
SortUtil.swap(queue,j,k); E+\?ptw
k = j; H_?rbz} o
} V#Wy`
ce
} Kg6J:HD49
k-ZO/yPo
} 33~MP;
-m^-p
} FtTq*[a
Pxl, "
SortUtil: 3H,x4L5j
lrE"phYk
package org.rut.util.algorithm; c4AJ`f.5
k7U.]#5V
import org.rut.util.algorithm.support.BubbleSort; toA}0MI(:
import org.rut.util.algorithm.support.HeapSort; KPToyCyR1
import org.rut.util.algorithm.support.ImprovedMergeSort; 2G8w&dtu
import org.rut.util.algorithm.support.ImprovedQuickSort; }R;}d(C`
import org.rut.util.algorithm.support.InsertSort; Ae7FtJO
import org.rut.util.algorithm.support.MergeSort; $+80V{J#
import org.rut.util.algorithm.support.QuickSort; :u7BCV|yr
import org.rut.util.algorithm.support.SelectionSort; H8YwMhE7
import org.rut.util.algorithm.support.ShellSort; Z#}sK5s
J|I*n
/** {<{VJGY7T
* @author treeroot uUjjAGZ
* @since 2006-2-2 u.yR oZ8/!
* @version 1.0 +JI,6)Ry
*/ ;87PP7~
public class SortUtil { \lg
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public final static int INSERT = 1; Nk@-yZ@,8
public final static int BUBBLE = 2; L]MWdD
public final static int SELECTION = 3; ?q`i
MiN
public final static int SHELL = 4; &KMI C
public final static int QUICK = 5; ;?{^LiD+F
public final static int IMPROVED_QUICK = 6; +2{ f>KZ
public final static int MERGE = 7; rfonM~3?'
public final static int IMPROVED_MERGE = 8; f:M^q ;
public final static int HEAP = 9; mP*$wE9b,:
y`j_]qvt
public static void sort(int[] data) { |-ZML~2S=h
sort(data, IMPROVED_QUICK); )<HvIr(xr
} :WRD<D_4
private static String[] name={ uzxwJs'fz
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" = 9Yfo,F
}; fuj9x;8X0
L--
t(G
private static Sort[] impl=new Sort[]{ r]Hrz'C`
new InsertSort(), ,LwinjHA*
new BubbleSort(), ,<Cl^ ^a,
new SelectionSort(), -,/7u3
new ShellSort(), 0y|1@CS
new QuickSort(), ';G/,wB?`
new ImprovedQuickSort(), 4AL,=C3
new MergeSort(), PV\J]
|d,%
new ImprovedMergeSort(), {-I+
new HeapSort() c!HGiqp
}; oOprzxf"+Z
*m]Y6
public static String toString(int algorithm){ {*;8`+R&
return name[algorithm-1]; K\ Wzh;
} g#i~^4-1
3chx4
public static void sort(int[] data, int algorithm) { WzFXF{(
impl[algorithm-1].sort(data); A!GvfmzqIn
} CE
M4E
W^09tx/I
public static interface Sort { 07SW$INb
public void sort(int[] data); ga|<S@u?}
} _b8KK4UR
Yp(0 XP5o
public static void swap(int[] data, int i, int j) { s YTJ^K d
int temp = data; 8{0XqE~ix=
data = data[j]; _v#puFy
data[j] = temp; Zsapu1HoL\
} oC"
[rn
} a)W|gx6Y