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。 _*.ImD
插入排序: p9-s' F|@i
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package org.rut.util.algorithm.support; (Zoopkxw
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import org.rut.util.algorithm.SortUtil; aCF=Og
/** g2%fla7r
* @author treeroot KL\hV .6
* @since 2006-2-2 d` X1cG
* @version 1.0 !dV2:`|+
*/ He)!Ez\X
public class InsertSort implements SortUtil.Sort{ _Q9I
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/* (non-Javadoc) {fI"p;|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XM57 UG
*/ x~u"KU2B
public void sort(int[] data) { 1W'0h$5^"
int temp; @h,3"2W{Ev
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WD >z
} UBWUq
} \ RS
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} eXAJ%^iD
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} 0^83:C
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冒泡排序:
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package org.rut.util.algorithm.support; b!JrdJO,DP
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import org.rut.util.algorithm.SortUtil; ;R([w4[~
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/** 2C AR2V|
* @author treeroot KA? J:
* @since 2006-2-2 FEA t6
* @version 1.0 }u]7 x:lh
*/ lSG]{
public class BubbleSort implements SortUtil.Sort{ a];1)zVA6
PY
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/* (non-Javadoc) ;~GBD]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<;VD0XX
*/ QTospHf`
public void sort(int[] data) { !LJ4
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int temp; -sxu7I
for(int i=0;i for(int j=data.length-1;j>i;j--){ yVe<+Z\7
if(data[j] SortUtil.swap(data,j,j-1); dK41NLGQ
} FGzn|I
} k`BS{,=
} _t>[gB,
} d*_rJE}B
^#!\VGnL
} joBS{]
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选择排序: vP%}XEF
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; :3[;9xCHj
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/** k\X yR4r
* @author treeroot 8RT<?I^5
* @since 2006-2-2 7U!-_)n{
* @version 1.0 U%n>(!d
*/ >U)>~SQf
public class SelectionSort implements SortUtil.Sort { P~;1adi3
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/* "fC>]iA8I
* (non-Javadoc) i`5Skr:M
* &Qmb?{S0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ u\(>a
public void sort(int[] data) { ]P e8G(E!
int temp; W~FU!C?]
for (int i = 0; i < data.length; i++) { *|ef #-|D
int lowIndex = i; T037|k a{
for (int j = data.length - 1; j > i; j--) { io UO0
if (data[j] < data[lowIndex]) { P4:Zy;$v!
lowIndex = j; FXul
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} Fl!D2jnN
} Z*'<9l_1
SortUtil.swap(data,i,lowIndex); |G/U%?`
} C]&/k_k
} 3Ww 37V>h
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} 85USMPF
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Shell排序: .hJcK/m
urg^>n4V]
package org.rut.util.algorithm.support; (Q=:ln;kM
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import org.rut.util.algorithm.SortUtil; .{-X1tJ7
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/** J:@yG1VIp
* @author treeroot kGAB'
* @since 2006-2-2 mqbCa6>_S
* @version 1.0 b&6lu4D
*/ ^kke
public class ShellSort implements SortUtil.Sort{ KA>QW[HX
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/* (non-Javadoc) <{j;']V;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,/&|:PkS
*/ JNo[<SZb
public void sort(int[] data) { ^<_rE- k
for(int i=data.length/2;i>2;i/=2){ t'Zv)Wu1E
for(int j=0;j insertSort(data,j,i); qP-_xpu]R
} ix"BLn]YZ
} #pyFIUr=w
insertSort(data,0,1); RL[F 9g
} Y`3\Z6KlV
[+L!c}#
/** RKZBI?@4
* @param data <zm:J4&>T
* @param j fmD~f
* @param i egAYJK-,!
*/ qcC(#0A>
private void insertSort(int[] data, int start, int inc) { !<out4Mz"
int temp; E;,__
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3
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} T[<554
} raZkH8
} ?_r{G7|D
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} /|3~LvIt=
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快速排序: .<Ays?
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package org.rut.util.algorithm.support; zK>m4+)~
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import org.rut.util.algorithm.SortUtil; \58bz<u"
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/** ss6{+@,
* @author treeroot ky&wv+7
* @since 2006-2-2 o_BRsJy
* @version 1.0 #=)!\
*/ dc0&*/`:
public class QuickSort implements SortUtil.Sort{ V5p^]To!
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/* (non-Javadoc) j3H_g^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z]KJ4
*/ X"9N<)C
public void sort(int[] data) { * U}-Y*
quickSort(data,0,data.length-1); #U4
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}
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private void quickSort(int[] data,int i,int j){ 7rYBFSp
int pivotIndex=(i+j)/2; =oM#]M'G+(
file://swap 'h^Ya?g
SortUtil.swap(data,pivotIndex,j); L)4~:f)B
@t0T+T3
int k=partition(data,i-1,j,data[j]); l-Ha*>gX[j
SortUtil.swap(data,k,j); UFLx'VXd
if((k-i)>1) quickSort(data,i,k-1); l *{Bz5hc
if((j-k)>1) quickSort(data,k+1,j); HCCq9us
/ !y~Q|<|=
} ~2nt33"
/** SurreD<x
* @param data ?:&2iW7z
* @param i y4r?M8]"r
* @param j !X||ds
* @return $:# :"
*/ w~:F?
private int partition(int[] data, int l, int r,int pivot) { 6(x53y__
do{ aXzb]">
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vxug>2
SortUtil.swap(data,l,r); 7yXJ\(6R_
} lMG+,?<uK&
while(l SortUtil.swap(data,l,r); 1GIBqs~-
return l; }/#*opcv
} n).*=YLN
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} &,3s2,1U(
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改进后的快速排序: u+
hRaI;v
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package org.rut.util.algorithm.support; oRJ!TAbD
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import org.rut.util.algorithm.SortUtil; h?$J;xn
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/** 2(x|
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* @author treeroot X
@pm !c#
* @since 2006-2-2 c##tP*(
* @version 1.0 `.dwG3R
*/ Ujlbcv6+
public class ImprovedQuickSort implements SortUtil.Sort { 6 !?]
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private static int MAX_STACK_SIZE=4096; FFcIOn
private static int THRESHOLD=10; +'+Nr<
/* (non-Javadoc) X
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XR3 dG:
*/ >I<}:=
public void sort(int[] data) { $06('Hg&
int[] stack=new int[MAX_STACK_SIZE]; D?8(n=#[
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int top=-1; zY7M]Az
int pivot; Q`NdsS2
int pivotIndex,l,r; :WsHP\r
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stack[++top]=0; zGNW5S9G
stack[++top]=data.length-1; Ihr[44#
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while(top>0){ .{ZJywE<
int j=stack[top--]; J7C?Z
int i=stack[top--]; HG< z,gE
2
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pivotIndex=(i+j)/2; IW>~Yl?
pivot=data[pivotIndex]; B/qN1D]U.
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SortUtil.swap(data,pivotIndex,j); $7]?P;$
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file://partition _cC1u7U9
l=i-1; 10.ZBfn
r=j; rNKeY48\
do{ _~{J."q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _Pa@%/
SortUtil.swap(data,l,r); k.2GIc:5
} $G 6kS@A
while(l SortUtil.swap(data,l,r); _L` uCjA
SortUtil.swap(data,l,j); 08{^Ksg
h-sO7M0E]
if((l-i)>THRESHOLD){ !syyOfu`}
stack[++top]=i; fAz4>_4
stack[++top]=l-1; NFtA2EMLu[
} |(TEG.<g
if((j-l)>THRESHOLD){ Y2'HP)tfIw
stack[++top]=l+1; rBU)@I pDG
stack[++top]=j; .qKfhHJ
} o8H\l\(
98| v.d
} FGie*t
file://new InsertSort().sort(data); +'iqGg-
insertSort(data); $aB`A$'hK
} oM^vJ3
/** Q4*{+$A
* @param data &/2+'wCp5
*/ "L`BuAB
private void insertSort(int[] data) { {O).!
int temp; 2L[!~h2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2<h~:
L
} `QRXQ c
} auX(d -m
} bA2[=6
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} )E7wBNV
L[<Y6u>m!1
归并排序: BNA1"@9q
xdDe@G;"
package org.rut.util.algorithm.support; ~%
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import org.rut.util.algorithm.SortUtil; Z__fwv.X[
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/** k%\y,b*
* @author treeroot )F\kGe
* @since 2006-2-2 fv+d3s?h
* @version 1.0 X2 ;72
*/ m\CU,9;;(
public class MergeSort implements SortUtil.Sort{ 6R8>w,
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/* (non-Javadoc) 1Z;cb0:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =sv?))b`
*/ Nu3IYS5&
public void sort(int[] data) { T-GvPl9ZJw
int[] temp=new int[data.length]; cTn(Tv9s
mergeSort(data,temp,0,data.length-1); VAjl?\}6
} {q+gm1iC
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private void mergeSort(int[] data,int[] temp,int l,int r){ f<$*,P
int mid=(l+r)/2; JY"J}
if(l==r) return ; oOLA&N-A~
mergeSort(data,temp,l,mid); 5D?{dA:Rq
mergeSort(data,temp,mid+1,r); 0bJT0_
for(int i=l;i<=r;i++){ $bF+J8%D
temp=data; wu11)HFL|z
} 7J`v#
int i1=l; ;;rx)|\<R
int i2=mid+1; ^&y*=6C
for(int cur=l;cur<=r;cur++){ bivo7_
if(i1==mid+1) GUM-|[~
data[cur]=temp[i2++]; $FIJI^Kd7
else if(i2>r) >Di`zw~
data[cur]=temp[i1++]; *SI,K)BP
else if(temp[i1] data[cur]=temp[i1++];
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else VKu_l
data[cur]=temp[i2++]; <0hVDk~
} 7bE`P[
} >ifys)wg>
zVe,HKF/
} &U=_:]/
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改进后的归并排序: -kP2Brm
9-&@Y
package org.rut.util.algorithm.support; dD'KP4Io@
n ~ &ssFC
import org.rut.util.algorithm.SortUtil; wv\"(e7(
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/** y?3u6q++
* @author treeroot *%_M?^
* @since 2006-2-2 Au/'|%2#(
* @version 1.0 pNuU{:9 B0
*/ nehk8+eV_
public class ImprovedMergeSort implements SortUtil.Sort { 2$b1q!g<
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private static final int THRESHOLD = 10; J|o<;9dg1
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/* q3-cWfU
* (non-Javadoc) }TuMMO4+
* 1rue+GL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CN-4FI)1D9
*/ ;Z;` BGZJ
public void sort(int[] data) { cFJZ|Ld
int[] temp=new int[data.length]; rW~G'
mergeSort(data,temp,0,data.length-1); ,If"4C!w
} BVH)!]m0
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private void mergeSort(int[] data, int[] temp, int l, int r) { :x3DuQP
int i, j, k; tpeMq-
int mid = (l + r) / 2; {- MhhRa5
if (l == r) @Xh8kvc81
return; ,O^kZ}b
if ((mid - l) >= THRESHOLD) H.l
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mergeSort(data, temp, l, mid); Po\+zZjo
else 8(A
k
insertSort(data, l, mid - l + 1); w)YTHY(k;
if ((r - mid) > THRESHOLD) &?y|Pn
mergeSort(data, temp, mid + 1, r); |\"%Dy[m
else i*09m^r
insertSort(data, mid + 1, r - mid); QZO<'q`L
+:c}LCI9<
for (i = l; i <= mid; i++) { yd45y}uS;F
temp = data; eUgKwu;
} %\B?X;(
for (j = 1; j <= r - mid; j++) { 6/(Z*L"~6k
temp[r - j + 1] = data[j + mid]; <3=k
} JE$$6X
int a = temp[l]; LA6Ik_-F
int b = temp[r]; rXe+#`m2
for (i = l, j = r, k = l; k <= r; k++) { eB,@oo%
if (a < b) { Tn38]UL
data[k] = temp[i++]; %F;uW[4r
a = temp; (15.?9
} else { NB( GE
data[k] = temp[j--]; '$ G%HUn
b = temp[j]; 9N) Ea:N
} C8:y+pH_U;
} )^E6VD&6
} %6@m~;c0
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/** /wHfc[b>
* @param data ZQ_~
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* @param l dGR #l)
* @param i IY(;:#l
*/ SQuW`EHBgs
private void insertSort(int[] data, int start, int len) { (Fk&~/SP
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V0F1X s`
} _.,"`U; H
} ~%: TE}
} +]VW[$W
} :?#wWF.
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堆排序: BT5~MYBl
kh>i#9Ie
package org.rut.util.algorithm.support; _9iF`Q
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import org.rut.util.algorithm.SortUtil; +gb"}
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/** =VZ0+Yl
* @author treeroot M3)Id?|]6
* @since 2006-2-2 Vt4,?"
* @version 1.0 2-"`%rE
*/ MPsm)jqX
public class HeapSort implements SortUtil.Sort{ jSvo-
"fd'~e$S#
/* (non-Javadoc) +j6^g*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) elP#s5l4
*/ x&FBh!5H
public void sort(int[] data) { <L3ig%#B
MaxHeap h=new MaxHeap(); 1|3vwgRhs
h.init(data); Mgu=cm)
for(int i=0;i h.remove();
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System.arraycopy(h.queue,1,data,0,data.length); 0LUw
} -kzg(+sm
3HX-lg`0
private static class MaxHeap{ v%Su#xq/
NbhQ-
void init(int[] data){ 6uWPIM;
this.queue=new int[data.length+1]; #j"N5e}U
for(int i=0;i queue[++size]=data; ^c>ROpic
fixUp(size); AiV1
vD`
} 88atj+N]
} LO,k'gg<
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private int size=0; =,W~^<\"
8';huq@C{
private int[] queue; /KCIb:U
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public int get() { l`AA<Rj*O-
return queue[1]; Be0v&Q_NK
} |DoD.?v
,#80`&\%
public void remove() { _,|N`BBqd
SortUtil.swap(queue,1,size--); a[V4EX1E
fixDown(1); i}ti
} s#)tiCSVW
file://fixdown =xHzhh
private void fixDown(int k) { 7C^W <SUo
int j; '\B!1B>T
while ((j = k << 1) <= size) { f<2<8xS
if (j < size %26amp;%26amp; queue[j] j++; G%fNGQwT
if (queue[k]>queue[j]) file://不用交换 Kdb:Q0B
break; ^g N?Io
SortUtil.swap(queue,j,k); s!K9-qZl<
k = j; KHt#mQy)9
} 1VO>Bh.Wm
} g6<D 1r
private void fixUp(int k) { [S T7CrwC
while (k > 1) { .?-]+-J?`
int j = k >> 1; 1BA5|
if (queue[j]>queue[k]) P;lDri
break; >]l7AZ:,
SortUtil.swap(queue,j,k); Gv}~
k = j; e{IwFX
} QU^?a~r
} w<=-n;2
se]QEd7]7
} ln=:E$jX
@RVj~J.A
} >W@3_{0
>WW5;7$
SortUtil: 9TOqA4
i@spd5.
package org.rut.util.algorithm; Gw}b8N6E
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import org.rut.util.algorithm.support.BubbleSort; "Bbd[ZI8
import org.rut.util.algorithm.support.HeapSort; {}v<2bS
import org.rut.util.algorithm.support.ImprovedMergeSort; !5h@uar
import org.rut.util.algorithm.support.ImprovedQuickSort; I)cA:Ip
import org.rut.util.algorithm.support.InsertSort; PsoW:t
import org.rut.util.algorithm.support.MergeSort; Z <vTr6?
import org.rut.util.algorithm.support.QuickSort; 3gU*,K7
import org.rut.util.algorithm.support.SelectionSort; R//S(eU68\
import org.rut.util.algorithm.support.ShellSort; Ewczq1%l:
5_Opx=
/** ALnE[}N6,
* @author treeroot 5Lm<3:7Q+
* @since 2006-2-2 3r,^is
* @version 1.0 @
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*/ 91j.%#[v'
public class SortUtil { t_ZWd#x+;
public final static int INSERT = 1; RkXW(T`
public final static int BUBBLE = 2; [^E{Yz=8,
public final static int SELECTION = 3; \{M/Do:
public final static int SHELL = 4; %W]"JwRu
public final static int QUICK = 5; ^G]H9qY-e
public final static int IMPROVED_QUICK = 6; D<XRu4^;
public final static int MERGE = 7; y5lhmbl: e
public final static int IMPROVED_MERGE = 8; !7fVO2m T
public final static int HEAP = 9; 9Kd:7@U
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public static void sort(int[] data) { qz/d6-0"
sort(data, IMPROVED_QUICK); tR% &.,2
} i$W=5B>SO
private static String[] name={ ~'L`RJR
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z:s:NvFX
}; Pi:=0,"XOp
xSoXf0zq:
private static Sort[] impl=new Sort[]{ 0ud>oh4WPR
new InsertSort(), H@hHEzO
new BubbleSort(), Qp]-4%^Vz
new SelectionSort(), S k&l8"
new ShellSort(), b!xm=U
new QuickSort(), ^5d9n<_xnQ
new ImprovedQuickSort(), 1*J#:|({(
new MergeSort(), `di/nv)
new ImprovedMergeSort(), b9@VD)J0E
new HeapSort() \H5{[ZUn
}; p?zh4:\F+
C1KO]e >
public static String toString(int algorithm){ -$m?ShDd
return name[algorithm-1]; ^L;k
} Q.Ljz
Z
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public static void sort(int[] data, int algorithm) { 5!)_"u3
impl[algorithm-1].sort(data); oc3}L^aD
} (N25.}8Y
'=eE6=m^K
public static interface Sort { bkfk9P
public void sort(int[] data);
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} vswBK-w(Z
[v$NxmRu
public static void swap(int[] data, int i, int j) { #[{xEVf
int temp = data; J=qPc}+
data = data[j]; bP ,_H
data[j] = temp; %!e;sL~&
} PC}m.tE
} SQd`xbIuL