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。 4|riKo)
插入排序: -GhP9; d
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package org.rut.util.algorithm.support; ,|y:" s
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import org.rut.util.algorithm.SortUtil; hI]Hp3S
/**
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* @author treeroot ^o3"#r{:+
* @since 2006-2-2 YIoQL}pX
* @version 1.0 GpY"fc%
*/ e7Xeo +/
public class InsertSort implements SortUtil.Sort{ 6#7Lm) g8
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/* (non-Javadoc) Wbr|_W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7}f}$1
*/ 2Rw&C6("w
public void sort(int[] data) { sFT.Oxg<
int temp; U>=Z-
T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FGigbtj`
} 8i>ZY
} l? Udn0F
} vK|E>nL
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} $WyD^|~SF
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冒泡排序: e6@=wnoX u
n.'8A(,r3
package org.rut.util.algorithm.support; x+Ttl4
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import org.rut.util.algorithm.SortUtil; #lmB
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/** UQ)W%Y;[0
* @author treeroot Aw$x;3y
* @since 2006-2-2 zi|+HM
* @version 1.0 j9eTCJqB
*/ -+(jq>t
public class BubbleSort implements SortUtil.Sort{ [#-b8Cu
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/* (non-Javadoc) }\tdcTMgS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +T|JK7
*/ [ey:e6,T9
public void sort(int[] data) { ZZ2vvtlyG
int temp; $?Yry.2
for(int i=0;i for(int j=data.length-1;j>i;j--){ /oR0+sH]
if(data[j] SortUtil.swap(data,j,j-1); Ixb=L(V
} 2|3)S`WZl
} :o0JY= 5
} ;&<{ey
} sy:[T T!w
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} D>/0v8
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选择排序: hL/)|N~
K&POyOvT
package org.rut.util.algorithm.support; m+`fn;*
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import org.rut.util.algorithm.SortUtil; ]op}y0
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/** t[ubn+
* @author treeroot tNO-e|~'
* @since 2006-2-2 HJLu'KY}
* @version 1.0 KK&rb~
*/ Aw}"gpL
public class SelectionSort implements SortUtil.Sort { f,h J~
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/* "$#xK |t
* (non-Javadoc) ;YA(|h<
* |SoCRjuCPM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >.Chl$)<
*/ E(O74/2c8
public void sort(int[] data) { oe%}?u
int temp; $@z5kwx:P
for (int i = 0; i < data.length; i++) { .z]Wyx&/U
int lowIndex = i; LxYrl-
for (int j = data.length - 1; j > i; j--) { }SX,^|eN
if (data[j] < data[lowIndex]) { ?u{~>
lowIndex = j; |v \_@09=
} /xsF90c\h
} }+)fMZz
SortUtil.swap(data,i,lowIndex); wT;0w3.Z
} (}{G`N>.{
} uD\?(LM
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} DK$X2B"c V
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Shell排序: {K+icTL3
(KFCs^x7wG
package org.rut.util.algorithm.support; %SX|o-B~.o
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import org.rut.util.algorithm.SortUtil; `bFff%_
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/** H\h3TdL
* @author treeroot < vL,*.zd
* @since 2006-2-2 1;C+$
* @version 1.0 =Q+;=-1
*/ @Ws*Q TlV
public class ShellSort implements SortUtil.Sort{ n,jKmA
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/* (non-Javadoc) Z'4./
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N*"p|yhd]
*/ s%qF/70'
public void sort(int[] data) { j}%ja_9S
for(int i=data.length/2;i>2;i/=2){ wb]%m1H`:
for(int j=0;j insertSort(data,j,i); d6'{rje(
} c9HrMgW
} n!NS(.o
insertSort(data,0,1); <oR a3Gi(%
} k[bD\'
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/** JW{rA6?
* @param data igIRSN}h
* @param j kw#;w=\>R{
* @param i D>HOn^
*/ 6ys
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private void insertSort(int[] data, int start, int inc) { iI\oz&!vH
int temp; [0(B>a3J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S0B|#O%Z
} % W=b?:
} Q9~*<I> h;
} =:&ly'QB&
W }8'Pf
} qlb-
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快速排序: ABQa 3{v
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package org.rut.util.algorithm.support; /q<__N
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import org.rut.util.algorithm.SortUtil; {t0)
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/** (a[y1{DLy
* @author treeroot {1IfU
* @since 2006-2-2 ZX>AE3wk
* @version 1.0 %6t2ohO"
*/ \P j
public class QuickSort implements SortUtil.Sort{ Z)! qW?
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/* (non-Javadoc) QIB\AAclO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uehDIl0\[b
*/ I/&%]"[^u
public void sort(int[] data) { **$LR<L
quickSort(data,0,data.length-1); Gcdd3W`O
} .} q&5v
private void quickSort(int[] data,int i,int j){ 6HZ` .o:f
int pivotIndex=(i+j)/2; |_] Q$q[[%
file://swap 8kU!8^mH
SortUtil.swap(data,pivotIndex,j); G+%zn|
M@`;JjtSA
int k=partition(data,i-1,j,data[j]); I$<<(VWH
SortUtil.swap(data,k,j); ;g @4|Ro
if((k-i)>1) quickSort(data,i,k-1); eZSNNgD<:
if((j-k)>1) quickSort(data,k+1,j); =osv3>&q
&7`^i.fh)
} P+s!|7'
/** nSW=LjrO~<
* @param data eCqHvMp
* @param i Km(n7Ah"
* @param j $"FQj4%d
* @return m;'6MHx;
*/ PK{acen
private int partition(int[] data, int l, int r,int pivot) { X;i~<Tq
do{ EH256f(&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gu0j.XS^
SortUtil.swap(data,l,r); \MbB#
} eM$s v9?
while(l SortUtil.swap(data,l,r); cl]Mi
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return l; 5_- (<B
} v*r7Zz6l
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} s$cK(S#
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改进后的快速排序: znxnL,-
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package org.rut.util.algorithm.support; 2nSSFx r
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import org.rut.util.algorithm.SortUtil; +3BBQ+x!
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/** sejg&8
* @author treeroot }|g\ 8jq
* @since 2006-2-2 *:Vq:IU[D
* @version 1.0 Yzh"1|O
*/ 0\[Chja
public class ImprovedQuickSort implements SortUtil.Sort { 2 lj'"nm
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private static int MAX_STACK_SIZE=4096; *v9 2
private static int THRESHOLD=10; j6Yy6X]
/* (non-Javadoc) t=Xv;=daB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) umiBj)r
*/ wgamshm"d
public void sort(int[] data) { 'eLqlu|T
int[] stack=new int[MAX_STACK_SIZE]; )XvilCk1
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int top=-1; r [4tPk
int pivot; M%ICdIc'
int pivotIndex,l,r; ` :o4'CG
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stack[++top]=0; I aGq]z
stack[++top]=data.length-1; NWMFtT
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while(top>0){ iV&6nh(
int j=stack[top--]; '}fzX2Q#
int i=stack[top--]; NYrQ$N"
XZ^^%*ew
pivotIndex=(i+j)/2; fA+,TEB~d
pivot=data[pivotIndex]; k@/sn(x
fh](K'P#^
SortUtil.swap(data,pivotIndex,j); ,.kha8v
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file://partition nEJY5Bz$
l=i-1; kQEy#JQmB
r=j; tasUZ#\6
do{ B" !l2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l)Crc-:}4j
SortUtil.swap(data,l,r); [co% :xJu
} gP0LCK>
while(l SortUtil.swap(data,l,r); mj9 <%P
SortUtil.swap(data,l,j); }+C2I
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if((l-i)>THRESHOLD){ ?QFpv#4
stack[++top]=i; [n \2
stack[++top]=l-1; xa <UM5eI
} IOqwCD[
if((j-l)>THRESHOLD){ uI1q>[
stack[++top]=l+1; `< xn8h9p
stack[++top]=j; 3HcQ(+Z
} b:tob0TB
Zc
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} BT}!W`
file://new InsertSort().sort(data); !,6c ~ w
insertSort(data); {(r`k;fB
} 6)Y.7 XR
/** -OapVa c
* @param data ;<j0f~G`
*/ 9}PhN<Gd
private void insertSort(int[] data) { i*/Yz*<
int temp; f;W|\z'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LR".pH13
} }a/x._[s
} -uMSe~
} L.S;J[a;
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} vgfcCcZ_iZ
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归并排序: Q9Kve3u-i
mi,E-
package org.rut.util.algorithm.support; G!>z;5KuS
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import org.rut.util.algorithm.SortUtil; ;/r1}tl+3>
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/** tt0f-:#
* @author treeroot apg=-^L'
* @since 2006-2-2 |mGFts}0o'
* @version 1.0 ,
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*/ O(D~_O.
public class MergeSort implements SortUtil.Sort{ 2O.i\cH
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/* (non-Javadoc) { g/0x,-Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ <{V(.=11
public void sort(int[] data) { Mxyb5h
int[] temp=new int[data.length]; OY;*zk
mergeSort(data,temp,0,data.length-1); 2jR r,Nl
} Fcd3H$Na;
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private void mergeSort(int[] data,int[] temp,int l,int r){ $$Oey)*
int mid=(l+r)/2; zgNc4B
if(l==r) return ; p i
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mergeSort(data,temp,l,mid); WST8SEzJ
mergeSort(data,temp,mid+1,r); |iE50,
for(int i=l;i<=r;i++){ M>~Drul
temp=data; [|(N_[E|6
} S-
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int i1=l; K/i*w<aPb7
int i2=mid+1; `6lr4Kk @R
for(int cur=l;cur<=r;cur++){ V^3L3|k
if(i1==mid+1) r'^Hg/Jzt
data[cur]=temp[i2++]; G,o6292hj
else if(i2>r) E"qRw_
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data[cur]=temp[i1++]; kYG/@7f/
else if(temp[i1] data[cur]=temp[i1++]; QPx_-
else gtk7)Uh
data[cur]=temp[i2++]; x=b7': nQ
} tzZ`2pSh
} [N7{WSZ&
)Im#dVQs=
} F`gi_;c
*=]&&<
改进后的归并排序: /{+y2.{j
mRL"nC
package org.rut.util.algorithm.support; 95 ;x=ju
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import org.rut.util.algorithm.SortUtil; M?Dfu
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/** QZ6D7tUc8
* @author treeroot pR(jglm7-
* @since 2006-2-2 _FH`pv
* @version 1.0 B8f8w)m
*/ xF;kTBRi
public class ImprovedMergeSort implements SortUtil.Sort { _P0T)-X\(
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private static final int THRESHOLD = 10; B*
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/|tJ6T1LrB
/*
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* (non-Javadoc) &;^YBW :I
* z\K"Rg~J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yE:+Lo`>
*/ R=gb'
public void sort(int[] data) { lR )67a
int[] temp=new int[data.length]; ,?>s>bHV
mergeSort(data,temp,0,data.length-1); X:HacYqtC
} >/l? g5{
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private void mergeSort(int[] data, int[] temp, int l, int r) { vHyC; 4'
int i, j, k; zHA!%>%'
int mid = (l + r) / 2; @
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if (l == r) jrr EAp
return; W>) M5t4i
if ((mid - l) >= THRESHOLD) ^2Fei.?T.
mergeSort(data, temp, l, mid); 2bJQTk _S
else &]`(v}`]
insertSort(data, l, mid - l + 1); ''yB5#^w(
if ((r - mid) > THRESHOLD) z@!`:'ak
mergeSort(data, temp, mid + 1, r); "W6uV!
else OLyf8&AU@
insertSort(data, mid + 1, r - mid); gG0!C))8
BXtCSfY$
for (i = l; i <= mid; i++) { 4Jp:x"w
temp = data; K"|l@Q[
} A)bWcB}U
for (j = 1; j <= r - mid; j++) { i3tg6o4C
temp[r - j + 1] = data[j + mid]; GeyvId03H
} aI P
int a = temp[l]; 7j@Hs[
*
int b = temp[r]; t|g4m[kr
for (i = l, j = r, k = l; k <= r; k++) { C 3^JAP
if (a < b) { -`'I{g&A
data[k] = temp[i++]; 8IlunJ
a = temp; Gr*r=s
} else { 6wBx;y
|
data[k] = temp[j--]; QoI3>Oj=
b = temp[j]; cqQ#p2<%
} g%sluT[#
} ?qPo=~y01
} uGwm
r
6a[}'/
/** |:nn>E}ZA/
* @param data "|EM;o
* @param l ]D?"aX'q>
* @param i ,]|#[ 8
*/ *Fy2BZH%Q
private void insertSort(int[] data, int start, int len) { |,S+@"0#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a!a-b~#cx
} >" )Tf6zw&
} >"^ O"E
} Nv#t:J9f
} Oxm>c[R
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堆排序: qX/y5F`
( /=f6^}
package org.rut.util.algorithm.support; MLXN Zd
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import org.rut.util.algorithm.SortUtil; fT;s-v[`k
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/** ,f~J`3(&
* @author treeroot "sS}N%!
* @since 2006-2-2 1Ir21un
* @version 1.0 I3aNFa}
*/ 6Y^23W F
public class HeapSort implements SortUtil.Sort{ nr95YSH
<fZyAa3}
/* (non-Javadoc) ?^7t'`zk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2<i!{;u$qL
*/ '=39+*6?
public void sort(int[] data) { BL0 {HV!
MaxHeap h=new MaxHeap(); caIL&G,
h.init(data); m4**~xfC
for(int i=0;i h.remove(); ~5NXd)2+Ks
System.arraycopy(h.queue,1,data,0,data.length); Zq^At+8+
} x3hB5p$q
.!Oo|m`V@
private static class MaxHeap{ nL5cK:
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void init(int[] data){ J=\HO8E6>
this.queue=new int[data.length+1]; 5&QJ7B,!
for(int i=0;i queue[++size]=data; ?qP7Y nl
fixUp(size); MX$0Op
} !=pn77`g>
} $|L
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private int size=0; )Q=_0;#;k
b,5~b&<h
private int[] queue; .8@$\ZRP
x6Bu F_.
public int get() { YJ^]
u}
return queue[1]; bfFeBBi
} zZ7;jyD
aT{_0m$G10
public void remove() { -z-C*%~
SortUtil.swap(queue,1,size--); *F+KqZ.2
fixDown(1); )P%ZA)l%_o
} <lgYcdJ
file://fixdown u8'Zl8g
private void fixDown(int k) { #H)vK"hF
int j; tClg*A;|B
while ((j = k << 1) <= size) { QiQ_bB!\
if (j < size %26amp;%26amp; queue[j] j++; w^?>e;/\
if (queue[k]>queue[j]) file://不用交换 wrc,b{{[iM
break; ^&B@Uw5{
SortUtil.swap(queue,j,k); "7
4-4
k = j; dz:E?
} {Bk[rCl
} riUwBiVa?2
private void fixUp(int k) { >W%EmnLK
while (k > 1) { A}BVep@D
int j = k >> 1; +O"!qAiK
if (queue[j]>queue[k]) 4-?C>
break; .~)q};Z
SortUtil.swap(queue,j,k); O[\iE5+$
k = j; |WQBDB`W
} $ZUdT
} 18|m)(W
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} u#Pa7_zBj]
#pT"BSz]
} Vrjc~>X
*U^6u/iH
SortUtil: viW!,QQ(S
({
8-*
package org.rut.util.algorithm; Ar%%}Gx/
.?D7dyU l1
import org.rut.util.algorithm.support.BubbleSort; `n.5f[wC
import org.rut.util.algorithm.support.HeapSort; Ye\rB\-
import org.rut.util.algorithm.support.ImprovedMergeSort; ~,d,#)VE2q
import org.rut.util.algorithm.support.ImprovedQuickSort; Hn7_FOC
import org.rut.util.algorithm.support.InsertSort; Mz9r5
import org.rut.util.algorithm.support.MergeSort; ~xbe~$$Q@
import org.rut.util.algorithm.support.QuickSort; #9B)Xx!g
import org.rut.util.algorithm.support.SelectionSort; Bgn&:T8<
import org.rut.util.algorithm.support.ShellSort; ,MdV;j~"'
y_'Ub{w
/** LSm$dK
* @author treeroot \<&m&%Zs
* @since 2006-2-2 hjU::m,WX
* @version 1.0 [8P:?nDDL
*/ }v@dL3{f
public class SortUtil { T] R|qlZ
public final static int INSERT = 1; ySk R>y
public final static int BUBBLE = 2; sz5MH!/PJ
public final static int SELECTION = 3; fWCo;4<5?
public final static int SHELL = 4; x5|I
public final static int QUICK = 5; %G3h?3
public final static int IMPROVED_QUICK = 6; FGPB:
public final static int MERGE = 7; w~.f
public final static int IMPROVED_MERGE = 8; wa(8Hl|Y
public final static int HEAP = 9; '@cANGg7[
kj|6iG
public static void sort(int[] data) { 8|b3j^u
sort(data, IMPROVED_QUICK); 2;[D;Y}
} &LmJ!^#
private static String[] name={ 4ae`pAu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?# Mr
}; 8/DS:uM
QsGiclU
private static Sort[] impl=new Sort[]{ 3RiWZN
new InsertSort(), H;D>|q
new BubbleSort(), Qwz}B
new SelectionSort(), v&Ii^?CvO
new ShellSort(), Bt[/0>i
new QuickSort(), \@-@Y
new ImprovedQuickSort(), f"B3,6m
new MergeSort(), b[__1E9v'
new ImprovedMergeSort(),
%&$Tz1"
new HeapSort() !5wIIS:FT
}; x*
DarSk
g6W)4cC8a
public static String toString(int algorithm){ S_iMVHe
return name[algorithm-1]; )r';lGh2#
} "C?#SO
B
BmBj7
public static void sort(int[] data, int algorithm) { "MxnFeLM#
impl[algorithm-1].sort(data); Okgv!Nt8)A
} w _u\p a
rJd,Rdt.
public static interface Sort { NnO~dRx{
public void sort(int[] data); zqd@EF6/bz
} LU+3{O5y
t^VwR=i
public static void swap(int[] data, int i, int j) { Bm.afsM;
int temp = data; F^l[GdUosK
data = data[j]; 5VRYO"D:
data[j] = temp; DDvh4<Hk
} sJ\BF
} HPpR.