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。 (+TL
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插入排序: YIl,8!
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package org.rut.util.algorithm.support; OJ7y
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import org.rut.util.algorithm.SortUtil; Gl T/JZ9
/** S2=x,c$
* @author treeroot a7]Z_Gk
* @since 2006-2-2 hg `N`O
* @version 1.0 ,nw5 M.D_
*/ )VG_Y9;Xk:
public class InsertSort implements SortUtil.Sort{ Yp$@i20
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/* (non-Javadoc) S~ y.>X3"P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u/`x@u
*/ Ap}`Q(.
public void sort(int[] data) { _`9WNJiL
int temp; uVw|jj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =mxj2>,&
} "W"r0"4
} *MN("<A_
} t\ 9Y)d
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} L%.=SbmS
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冒泡排序: A+hT2Ew@t}
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package org.rut.util.algorithm.support; fp"GdkO#}i
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import org.rut.util.algorithm.SortUtil; `u8=~]rblj
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/** t3.I ` Z
* @author treeroot V##T G0
* @since 2006-2-2 * \tR
* @version 1.0 J]&nZud`
*/ 2u}ns8wn
public class BubbleSort implements SortUtil.Sort{ ^coj ETOv
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/* (non-Javadoc) S`[r]msw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) []H0{a2{<
*/ x=44ITe1n[
public void sort(int[] data) { p"NuR4
int temp; ;BEX|wxn
for(int i=0;i for(int j=data.length-1;j>i;j--){ A~wyn5:_
if(data[j] SortUtil.swap(data,j,j-1); \H/}|^+@
} Mwd.S
} 71HrpTl1fw
} WQY\R!+
} '/F~vSQsR
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} !p70g0+
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选择排序: V8z*mnD
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package org.rut.util.algorithm.support; `)1qq @
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import org.rut.util.algorithm.SortUtil; 3;EBKGg|
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/** n,|YJ,v[
* @author treeroot l,E4h-$
* @since 2006-2-2 S2
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* @version 1.0 +
oNrc.
*/ 9CHn6 v ~)
public class SelectionSort implements SortUtil.Sort { j!?bE3r~
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/* El3Ayd3
* (non-Javadoc) i &,1
* >
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a~`,zQ -@
*/ ~fly6j|u
public void sort(int[] data) { ltmD=-]G_
int temp; cN#f$
for (int i = 0; i < data.length; i++) { 9B1bq #
int lowIndex = i; [AAIBb+U
for (int j = data.length - 1; j > i; j--) { @S Quc
if (data[j] < data[lowIndex]) { #0/^v*
lowIndex = j; \'Ca%j
} >tV:QP]Y
} 78u=J z6
SortUtil.swap(data,i,lowIndex); *(Us:*$W.
} =&;}#A%m
} T`| >oX
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} 3-
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Shell排序: (:J
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G)y'ex k
package org.rut.util.algorithm.support; (I(k$g[>
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import org.rut.util.algorithm.SortUtil;
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/** +Ram%"Zwh
* @author treeroot b]5S9^=LI
* @since 2006-2-2 q|R$A8)L.
* @version 1.0 4S,/Z{ J.
*/ 3a6
public class ShellSort implements SortUtil.Sort{ #'h(o/hz&&
%v1*D^))
/* (non-Javadoc) [wjH;f>SQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '3ZYoA%
*/ >U')ICD~
public void sort(int[] data) { cjBHczkY
for(int i=data.length/2;i>2;i/=2){ t)*A#
for(int j=0;j insertSort(data,j,i); {]:B80I;2
} 0'tm.,
} Dlu]4n[LB
insertSort(data,0,1); 7#iT33(3
} Xw9"wAj
@NJJ
/** ` oXL
* @param data dZjh@yGP.
* @param j ,zrShliU
* @param i d0@czNWIC
*/ aOo;~u2-=
private void insertSort(int[] data, int start, int inc) { bR?
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int temp; "0l7%@z*)q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uB uwE6
} >R8eAR$N
} qy~@cPT
} ~m@w p
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} .FAuM~_99b
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快速排序: >d#6qXKAU
} T<oLvS
package org.rut.util.algorithm.support; Ol.
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import org.rut.util.algorithm.SortUtil; <\S
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/** $ *^E
* @author treeroot 'l3K*lck
* @since 2006-2-2 x<e-%HB*-
* @version 1.0 .TWX,#
*/ mdD9Q
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public class QuickSort implements SortUtil.Sort{ Y=N; Bj
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/* (non-Javadoc) ) _O6_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T@H2[ 7[;
*/ HFd>UdT%
public void sort(int[] data) { vxC,8Z
quickSort(data,0,data.length-1); * E3
c--
} K=C).5=U
private void quickSort(int[] data,int i,int j){ z@S39Xp==
int pivotIndex=(i+j)/2; 1)f~OL8o
file://swap y[@<goT
SortUtil.swap(data,pivotIndex,j); k/ ZuFTN
9d!}]+"d42
int k=partition(data,i-1,j,data[j]); #T8$NZA
SortUtil.swap(data,k,j); 4$!iw3N(
if((k-i)>1) quickSort(data,i,k-1); ec` $2u
if((j-k)>1) quickSort(data,k+1,j); tpi>$:e
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} (">gLr
/** H/ 6GD,0
* @param data pu*vFwZ
* @param i Y4|g^>{<ni
* @param j xiPP&$mg
* @return g"Z X1X
*/ +~A<&7[}
private int partition(int[] data, int l, int r,int pivot) { Li;(~_62a]
do{ i\?P>:)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]xIfgSq
SortUtil.swap(data,l,r); [#R<Z+c
} :Gz# 4k
while(l SortUtil.swap(data,l,r); r?= 7#/]
return l; ly]n2RK
} Soa5TM
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} /8` S}g+
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改进后的快速排序: !*gTC1bvB
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; IFY,j8~q
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/** sm>Hkci%
* @author treeroot afMIq Q?
* @since 2006-2-2 JDzkv%E^
* @version 1.0 XHlx89v7
*/ vK\;CSk
public class ImprovedQuickSort implements SortUtil.Sort { oGLSk(T&I
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private static int MAX_STACK_SIZE=4096; E@_M|=p&
private static int THRESHOLD=10; 4%I(Z'*Cx
/* (non-Javadoc) E0 Vl}b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jbqhNsTNK
*/ ^Q?I8,4}
public void sort(int[] data) { GBZx@B[TY
int[] stack=new int[MAX_STACK_SIZE]; =R^V[zTn_
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int top=-1; t'EH_U
int pivot; &:` 7
int pivotIndex,l,r; [lC*|4t&
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stack[++top]=0; 9J?G"JV?
stack[++top]=data.length-1; >, &6zj
#mX=Y>l
while(top>0){ xe:
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int j=stack[top--]; P~0d'Oi
int i=stack[top--]; O>Nop5#o
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pivotIndex=(i+j)/2; Cse@>27s
pivot=data[pivotIndex]; %XqLyeOS
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SortUtil.swap(data,pivotIndex,j); mdOF0b%-]
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file://partition 9zkR)C
l=i-1; y\Z-x
r=j; 8fdK|l w
do{ F~ n}Ep~1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1!/
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SortUtil.swap(data,l,r); AX%9k
} :!1B6Mc
while(l SortUtil.swap(data,l,r); eP3)8QC
SortUtil.swap(data,l,j); d%9r"=/
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if((l-i)>THRESHOLD){ qfY.X&]PU
stack[++top]=i; [JGa3e
stack[++top]=l-1; 'C~NQ{1TV
} 'Z7oPq6
if((j-l)>THRESHOLD){ 0n_Cuh\
stack[++top]=l+1; O4&/g-
stack[++top]=j; (o\:rLZu
} '7W?VipU
fwI Zr~l
} xnu|?;.}!
file://new InsertSort().sort(data); +MQf2|--
insertSort(data); A;h0BQm/j
} Uc}L/ax
/** UG+wRX :dA
* @param data q5[%B K
*/ d
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private void insertSort(int[] data) { Lvc*L6
int temp; .J~iRhVOF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z1LATy
} cJm!3X
} eR8qO"%2:
} 8*)zoT*A
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} 2&]UFg:8Q
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归并排序: /
GJ"##<
UsYH#?|O
package org.rut.util.algorithm.support; 5RTAM
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import org.rut.util.algorithm.SortUtil; /+J?Ep(_
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/** ha'oLm#
* @author treeroot @yB!? x
* @since 2006-2-2 gB<p
* @version 1.0 Gn;eh~uw;l
*/ FQ?H%UcW
public class MergeSort implements SortUtil.Sort{ xN}P0
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/* (non-Javadoc) d?&?$qf[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q!<`ci,uS
*/ R6)p4#|i
public void sort(int[] data) { _q=$L
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int[] temp=new int[data.length]; c?eV8h1G
mergeSort(data,temp,0,data.length-1); \GbT^!dj
} m{x!uq
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private void mergeSort(int[] data,int[] temp,int l,int r){ mb?DnP,z
int mid=(l+r)/2; i2$U##-ro]
if(l==r) return ; (J<@e!@NE
mergeSort(data,temp,l,mid); )u]<8
mergeSort(data,temp,mid+1,r); Tc\^=e^N?
for(int i=l;i<=r;i++){ S_6`.@B}
temp=data; 7esG$sVj(
} tZU"Ud
int i1=l; 2X)E3V/*
int i2=mid+1; Z[AJat@H
for(int cur=l;cur<=r;cur++){ E] t:_v
if(i1==mid+1) J(M0t~RZ
data[cur]=temp[i2++]; ^=D77 jS
else if(i2>r) _ZD)#?
data[cur]=temp[i1++]; +B_q? 6pR
else if(temp[i1] data[cur]=temp[i1++]; [gzw<b:`
else Q_6./.GQ
data[cur]=temp[i2++]; P}&7G-
} C3bZ3vcW$
} ?GD{}f33
ozkN&0
} h:#
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改进后的归并排序: ERGDo=j
v[r:1T@
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; [CRy>hfV
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/** ,A
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* @author treeroot O`t ]#
* @since 2006-2-2 ;b
cy(Fp,\
* @version 1.0 XOgX0cRC4
*/ +5?hkQCX1^
public class ImprovedMergeSort implements SortUtil.Sort { .XURI#b
<pYGcVB9V
private static final int THRESHOLD = 10; 1(hgSf1WH
qJ"dkT*
/* 9qwVBu ;
* (non-Javadoc) -1S+fUkiK/
* wXXv0OzK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xj+1]KRN
*/ |m k $W$h
public void sort(int[] data) { j=dHgnVvj
int[] temp=new int[data.length]; PM=I
mergeSort(data,temp,0,data.length-1); SP
HeI@i
} ~LO MwMHl
mkj`z
private void mergeSort(int[] data, int[] temp, int l, int r) { "@GopD
int i, j, k; ^o:0 Y}v=
int mid = (l + r) / 2; *M+:GH/5
if (l == r) 8xg:ItJaA0
return; Ao`9 fI#q
if ((mid - l) >= THRESHOLD) ;n7k_K#0z!
mergeSort(data, temp, l, mid); %>xW_5;Z
else .b N0!
insertSort(data, l, mid - l + 1); "Oh-`C
if ((r - mid) > THRESHOLD) $CL=M
mergeSort(data, temp, mid + 1, r); Yq`r>g
else #5G!lbH
insertSort(data, mid + 1, r - mid); [ "J
k@4]s_2
for (i = l; i <= mid; i++) { `x6 i5mp
temp = data; a2Q9tt>Q
} :7:Nx`D8
for (j = 1; j <= r - mid; j++) { b%,5B
temp[r - j + 1] = data[j + mid]; a/L?R
Uu
} ?h
K+h .{
int a = temp[l]; \^N9Q9{7]
int b = temp[r];
6=A++H@
for (i = l, j = r, k = l; k <= r; k++) { rx_'(
if (a < b) { N[aK#o,
data[k] = temp[i++]; {x2N~1!E
a = temp; [_-CO}>
} else { /kx:BoV
data[k] = temp[j--]; i7e{REBXb
b = temp[j]; <T
} %tUJ >qYU
} k[Uc_=
} W.zA1S
4X#>;
/** Pm+H!x,
* @param data JsfbY^wz
* @param l ]Z<{
~
* @param i s'~_pP
*/ 2c8,H29
private void insertSort(int[] data, int start, int len) { z%+?\.oH
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lOd[8|/
} N ?V5gi
} 1v`<Vb%"}T
} _k5KJKvr
} vuDp_p*]S
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堆排序: t4h05 i
M9bb,`X>Q
package org.rut.util.algorithm.support; l4R:_Z<
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import org.rut.util.algorithm.SortUtil; )_xM)mH
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/** 0lmoI4bW}s
* @author treeroot YfxZ<
* @since 2006-2-2 eg?vYW
* @version 1.0 jn)~@~c
*/ m]7yc>uDy
public class HeapSort implements SortUtil.Sort{ CzNSJVE5
PcUi+[s;x
/* (non-Javadoc) mqq~&nI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8.Y6r
*/ ^U~YG=!ww
public void sort(int[] data) { LsV!Sd
MaxHeap h=new MaxHeap(); L8 R|\Bx
h.init(data); $D9JsUij
for(int i=0;i h.remove(); F P
mLost
System.arraycopy(h.queue,1,data,0,data.length); C+y:<oo)
} y3;G<9K2c]
ix7N q7!N
private static class MaxHeap{ &)xoR4!2
bmt2~!
void init(int[] data){ c?<FMb3]
this.queue=new int[data.length+1]; ##k=='dR
for(int i=0;i queue[++size]=data; dVO|q9 /
fixUp(size); >-y'N.l^
} )
I-8.
} .]v8W51Y
!8l4Hc8
private int size=0; )2bPu[U
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private int[] queue; s`H}NjWx
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public int get() { ~73YOGiGJH
return queue[1]; Fo;xA
} j24BB}mBB
DOU\X N
public void remove() { X`J~3s
SortUtil.swap(queue,1,size--); g<UjB
fixDown(1); FE$)[ w,m
} x]y~KbdeB
file://fixdown q7m-} mBN~
private void fixDown(int k) { !y4o^Su[
int j; -fG;`N5U
while ((j = k << 1) <= size) { #@y4/JS&2
if (j < size %26amp;%26amp; queue[j] j++; ^P&y9dC.
if (queue[k]>queue[j]) file://不用交换 'Ur$jW
break; )W*S6}A
SortUtil.swap(queue,j,k); 8#7z5:_
k = j; Eer rIV
} v9M;W+J
} "hs`Y4U
private void fixUp(int k) { /A<L
while (k > 1) { 2,NQ(c_c$
int j = k >> 1; 6PvV X*5T
if (queue[j]>queue[k]) c(YNv4*X
break; ,VJ0J!@
SortUtil.swap(queue,j,k); =$b^X?x
k = j; ,pf<"^li
} &:'Uh
W-t
} \J9@p
oEKLuy
} sbkWJy
,/o<O jR
} M@8
<^CK
ZIpL4y
=_
SortUtil: H$1R\rE`
lm]4zs /A
package org.rut.util.algorithm; MK~viSgi
/p X\)wi
import org.rut.util.algorithm.support.BubbleSort; e:!&y\'"9
import org.rut.util.algorithm.support.HeapSort; Cd6^aFoK!
import org.rut.util.algorithm.support.ImprovedMergeSort; LA"`8
import org.rut.util.algorithm.support.ImprovedQuickSort; Bv!j.$0d{
import org.rut.util.algorithm.support.InsertSort; /Pi{Mv eZM
import org.rut.util.algorithm.support.MergeSort; =AZ>2P
import org.rut.util.algorithm.support.QuickSort; 9{xP~0g
import org.rut.util.algorithm.support.SelectionSort; |910xd`Z
import org.rut.util.algorithm.support.ShellSort;
C4Bh#C
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/** *Pw;;#\B
* @author treeroot mm:\a-8j
* @since 2006-2-2 Os?~U/
* @version 1.0 8BLtTpu
*/ x*bM C&Ea
public class SortUtil { KcNEB_i
public final static int INSERT = 1; \gj@O5rG P
public final static int BUBBLE = 2; }2V|B4
public final static int SELECTION = 3; 3x'BMAA+
public final static int SHELL = 4; *Swb40L^
public final static int QUICK = 5; b/5;377_
public final static int IMPROVED_QUICK = 6; /-G;#Wm
public final static int MERGE = 7; ~G5)ya-
public final static int IMPROVED_MERGE = 8; <\2,7K{{+;
public final static int HEAP = 9; j"J2&Y2
M<g>z6
public static void sort(int[] data) { LuR.; TiW
sort(data, IMPROVED_QUICK); 9$UjZ$ v
} .T4"+FTzP
private static String[] name={ NaB8cLURp
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n1.]5c3p
}; ;se-IDN
N7}.9%EV
private static Sort[] impl=new Sort[]{ N<Ti[Q]G
new InsertSort(), !t~S.`vF
new BubbleSort(), 3vNo D
new SelectionSort(), |2{y'?,
new ShellSort(), Mq6.!j
new QuickSort(), .CrahV1G
new ImprovedQuickSort(), :m^eNS6:
new MergeSort(), C!RxMccTh
new ImprovedMergeSort(), GwW!Q|tVz=
new HeapSort() +anNpy
}; &7|=8Z[o
sT'wps 2
public static String toString(int algorithm){ 1&Nk
return name[algorithm-1]; 4vp,izNW
} _@jl9<t=_
WR gAc%
public static void sort(int[] data, int algorithm) { ,MuLu,$/
impl[algorithm-1].sort(data); OHM.xw*?.
} &{/ `Q,
p>|;fS\`@}
public static interface Sort { B.0(}@
public void sort(int[] data); yxLGseD
} KzI$GU3
)bw^!w)
public static void swap(int[] data, int i, int j) { q
( H^H
int temp = data; 8WfF: R;
data = data[j]; )uZ<?bkQ
data[j] = temp; >vt#,8VAN
} 2syKYHV
} $PHKI B(