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。 Xs%R]KOwt
插入排序: =Qj+Ug'
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package org.rut.util.algorithm.support; B=q)}aWc
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import org.rut.util.algorithm.SortUtil; ."F'5eTT~
/** >d27[%
* @author treeroot -@ UN]K
* @since 2006-2-2 k;K>
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* @version 1.0 K.#,O+-Kg`
*/ /UaNYv/
public class InsertSort implements SortUtil.Sort{ C6D=>%uY
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/* (non-Javadoc) 3D$\y~HU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0+n&BkS'
*/ v't6
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public void sort(int[] data) { c_-" Qo
int temp; "S B%02
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *fQ?A|l!x
} *2"bG1`
} &3 XFgHo
} <(#xOe
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} oA!5dpNhU
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冒泡排序: wv7p,9Z[
J:g<RZZ1
package org.rut.util.algorithm.support; +B`'P9Zk@
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import org.rut.util.algorithm.SortUtil; &e HM#as
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/** {m_A1D/_
* @author treeroot RWh9&O:6'
* @since 2006-2-2 J3lG"Ww
* @version 1.0 @Hspg^
*/ F=
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public class BubbleSort implements SortUtil.Sort{ IFC%%It5,
0.J1!RIK/
/* (non-Javadoc) {FV,j.D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dJ%wVY0z=
*/ VVI8)h8
public void sort(int[] data) { 'B:Z=0{>N
int temp; $,; ;u:-
for(int i=0;i for(int j=data.length-1;j>i;j--){ a%MzNH
if(data[j] SortUtil.swap(data,j,j-1); @O}IrC!bf
} ]HJ{dcF
} vDK:v$g
} ;Ch+X$m9
} 0$xK
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} w&wA >q>&
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选择排序: b!4N)t>gl
2d5}`>
package org.rut.util.algorithm.support; #sz]PZ\
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import org.rut.util.algorithm.SortUtil; bk\dy7
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/** #Dj"W8'zh
* @author treeroot aW`:)y&f
* @since 2006-2-2 zmy4tsmX
* @version 1.0 QQ^Gd8nQ
*/ L~*|,h
public class SelectionSort implements SortUtil.Sort { xQNw&'|UU
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/* Xk{!' 0
* (non-Javadoc) Z-^uM`],G
* ?
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3iu!6lC
*/ L\/u}]dPQ
public void sort(int[] data) { SWNU1x{,c\
int temp; 3o+KP[A
for (int i = 0; i < data.length; i++) { L?=#*4t
int lowIndex = i; Hk<X
for (int j = data.length - 1; j > i; j--) { d'N(w7-Y
if (data[j] < data[lowIndex]) { hw&ke$Fg#
lowIndex = j; XPHQAo[(s
} itqQ)\W
} 90
SortUtil.swap(data,i,lowIndex); s
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} 763E 6,7
} ri/t(m^{W
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} ! 6p>P4TT
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Shell排序: io1S9a(y
\]Y\P~n
package org.rut.util.algorithm.support; @wd!&%yzO
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import org.rut.util.algorithm.SortUtil; y;,=ajrF
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/** O{lIs_1.Z
* @author treeroot 8yHq7=
* @since 2006-2-2 qiG]nCq
* @version 1.0 mV6#!_"
*/ a(PjcQ4dY
public class ShellSort implements SortUtil.Sort{ MZCL:#
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/* (non-Javadoc) ?60>'Xjj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,bB( 24LD
*/ fp.!VOy
public void sort(int[] data) { tP}Xhn`
for(int i=data.length/2;i>2;i/=2){ Xtuhc dzu[
for(int j=0;j insertSort(data,j,i); Hnfvo*6d.e
} I#i?**
} e%PCe9
insertSort(data,0,1); *hv=~A
$q
} _oQtk^fp
r/UYC"K3
/** R'S c
* @param data 7MKD_`g
* @param j Cr'
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* @param i kR<xtHW
*/ +:Lk^Ny
private void insertSort(int[] data, int start, int inc) { T$: >*
int temp; ?cqicN.+6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qru2h #
} Na\3.:]z
} 4 hL`=[AB
} oHxGbvQc
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} *,E;
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快速排序: /yLzDCKn
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package org.rut.util.algorithm.support; /)sDnJ1r
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import org.rut.util.algorithm.SortUtil; gsnP!2cR
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/** u8|@|t
* @author treeroot C>AcK#-x,{
* @since 2006-2-2 5iP8D<;o5
* @version 1.0 bBA$}bv
*/ )J;ny!^2
public class QuickSort implements SortUtil.Sort{ 6a7vlo
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/* (non-Javadoc) uZ@-e|qto
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2K3MAd{
*/ Xwn3+tSIa
public void sort(int[] data) { !A~d[</]m
quickSort(data,0,data.length-1); [:Be[pLC
} IbF4k.J
private void quickSort(int[] data,int i,int j){ U$A/bEhw
int pivotIndex=(i+j)/2; x:p}w[WM
file://swap DP|TIt ,Rl
SortUtil.swap(data,pivotIndex,j); DNmb[
$"/UK3|d
int k=partition(data,i-1,j,data[j]); #]@9qPyn
SortUtil.swap(data,k,j); cZ^wQ5=
if((k-i)>1) quickSort(data,i,k-1); lco~X DI
if((j-k)>1) quickSort(data,k+1,j); ^SEc./$
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} p`\3if'
/** :*#rRQ>t
* @param data T0;u+$
* @param i FX7M4t#<
* @param j >J.Qm0TY(
* @return <F ew<r2
*/ -<|Y 1PQ
private int partition(int[] data, int l, int r,int pivot) { wjL|Z8
do{ oBb?"2 ~9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4 ^4d9?c
SortUtil.swap(data,l,r); yDzdE;
} IeZ&7u
while(l SortUtil.swap(data,l,r); UIQQ\,3
return l; ~
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} :]yg
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} tzPC/?
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改进后的快速排序: Hc M~
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package org.rut.util.algorithm.support; Yhe+u\vGs\
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import org.rut.util.algorithm.SortUtil; |P>|D+I0
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/** uWh|C9Y!A
* @author treeroot )9MrdVNv
* @since 2006-2-2 CldDr<k3
* @version 1.0 Mxo6fn6-46
*/ N ,+(>?yE
public class ImprovedQuickSort implements SortUtil.Sort { *
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private static int MAX_STACK_SIZE=4096; B=r0?%DX"1
private static int THRESHOLD=10; TiQ^}5~M
/* (non-Javadoc) lw s(/a*c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {$0&R$v3
*/ sllzno2bU
public void sort(int[] data) { ]dq5hkjpU
int[] stack=new int[MAX_STACK_SIZE]; 8-ZUS|7B
@^'$r&M
int top=-1; wDMjk2YN
int pivot; 2yvVeo&3
int pivotIndex,l,r; #\LZ;&T'N
"NKf0F
stack[++top]=0; U~wjR"='
stack[++top]=data.length-1; JIMWMk;ot
j AQU~Ol_
while(top>0){ C-Ig_Nc
int j=stack[top--]; 7u::5 W-q
int i=stack[top--]; U_l7CCK +
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pivotIndex=(i+j)/2; ~\[?wN
pivot=data[pivotIndex]; VRtO; F
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SortUtil.swap(data,pivotIndex,j); )yrAov\z*
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file://partition {c@G$
l=i-1; @UO}W_0ZD
r=j; \-c#jo.$8
do{ :@/"abv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e=7W7^"_
SortUtil.swap(data,l,r); &+G;R
} t7bqk!6hM\
while(l SortUtil.swap(data,l,r); SRItE\"Xe
SortUtil.swap(data,l,j); ~p\n&{P0
rGQ5l1</
if((l-i)>THRESHOLD){ qU -!7=}7
stack[++top]=i; 3b@VY'P
stack[++top]=l-1; };r|}v !~_
} 7TpRCq#
if((j-l)>THRESHOLD){ (N0sE"_~I5
stack[++top]=l+1; g8l5.Mpx
stack[++top]=j; @o&Ytd;i
} @cIgxp
LWD#a~
} 2d 8=h6
file://new InsertSort().sort(data); 6{.J:S9n
insertSort(data); pv&^D,H,
} _f|/*.
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/** (ND%}
* @param data Z(;AyTXA
*/ HxIoA
private void insertSort(int[] data) { P6YQK+
int temp; s"coQ!e1.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \(fq8AL?
} Xu#:Fe}:
} 4mJFvDZV`
} 88 l,&2q
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} 8_a3'o%5
!y. $J<
归并排序: \I:.<2i
/H)Br~ l
package org.rut.util.algorithm.support; {cR=N~_EO
63M=,0-Qt
import org.rut.util.algorithm.SortUtil; DsGI/c
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/** 5un^yRMB-
* @author treeroot g<a<*)&
* @since 2006-2-2 ^N- 'xy
* @version 1.0 #\ #3r
*/ b#a@rh
public class MergeSort implements SortUtil.Sort{ ,r`UBQ}?
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/* (non-Javadoc) OH6n^WKY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .6m_>Y6
*/ O%g\B8;
public void sort(int[] data) { [zh"x#AyI
int[] temp=new int[data.length]; "Pj}E=!k
mergeSort(data,temp,0,data.length-1); \$pkk6Q3,w
} Qqq
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8TPN#"
private void mergeSort(int[] data,int[] temp,int l,int r){ zCV7%,H~
int mid=(l+r)/2; !re1EL
if(l==r) return ; `!i-#~n
mergeSort(data,temp,l,mid); [/$N!2'5
mergeSort(data,temp,mid+1,r); TzKK;(GX
for(int i=l;i<=r;i++){ wkBL=a
temp=data; Q7GY3X*kA
} N4wA#\-
int i1=l; m|F:b}0Hb
int i2=mid+1; ,2,5Odrz
for(int cur=l;cur<=r;cur++){ x=*L-
if(i1==mid+1) S
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data[cur]=temp[i2++]; BJ5}GX!
else if(i2>r) BQ#L+9%
data[cur]=temp[i1++]; m@\ZHbq
else if(temp[i1] data[cur]=temp[i1++]; re`t ]gzb
else 0^&!6R
data[cur]=temp[i2++]; 2|{V,!/cvG
} l r~gG3
} hs(W;tR@W
; LMWNy4
} Wi$dZOcSJ
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改进后的归并排序: Fo}7hab
_Y!sVJ){,c
package org.rut.util.algorithm.support; |[1D$Qv
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import org.rut.util.algorithm.SortUtil; W)4QOS&
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/** j@| `f((4
* @author treeroot dR+1aY;
* @since 2006-2-2 WG5W0T_
* @version 1.0 fdv`7u+}a
*/ BsLG^f
public class ImprovedMergeSort implements SortUtil.Sort { W^3;F1
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private static final int THRESHOLD = 10; #/
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; Lql_1
/* /3B6Mtb
* (non-Javadoc) 1%`7.;!i
* BX< dSK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AGq>=avv
*/ JhX=l-?
public void sort(int[] data) { ^Z}Ob= .G
int[] temp=new int[data.length]; fn}UBzED\
mergeSort(data,temp,0,data.length-1); DtF}QvA
} Jpj!rXTX*
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private void mergeSort(int[] data, int[] temp, int l, int r) { ZjVWxQ
int i, j, k; L1#Ij#
int mid = (l + r) / 2; bx}fj#J]En
if (l == r) p#@Z$gTH`'
return; O#_b7i
if ((mid - l) >= THRESHOLD) <Kt3PyF
mergeSort(data, temp, l, mid); >M;u*Go`QO
else g^~Kze
insertSort(data, l, mid - l + 1); ~cqryr9
if ((r - mid) > THRESHOLD) @i%YNI5*
mergeSort(data, temp, mid + 1, r); \Fb| {6+
else Qe$k3!
insertSort(data, mid + 1, r - mid); %b}gDWs
_*6v|Ed?
for (i = l; i <= mid; i++) { k\7:{y@,
temp = data; XDz5b.,
} ry0%a[[
for (j = 1; j <= r - mid; j++) { 9uYyfb:
,z
temp[r - j + 1] = data[j + mid]; HeA{3s
} OB^Tq~i
int a = temp[l]; PQ U]l"A
int b = temp[r]; ,)fkr]`<
for (i = l, j = r, k = l; k <= r; k++) { \2kPq>hu
if (a < b) { ^g>1U5c
data[k] = temp[i++]; ~?Omy8#
a = temp; <J{'o`{
} else { I+;-p]~
data[k] = temp[j--]; .EP6oKA
b = temp[j]; `-UJ /{
} 'Kbl3fUF
} QIU,!w-3X
} Is.WZYa
BNucc']
/** !<n"6KA.
* @param data |m
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* @param l 0ejdKdYN
* @param i 0$P/jt
*/ buMqF-j
private void insertSort(int[] data, int start, int len) { Q^_/By@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C"w
{\
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} Ru\_dr2yI}
} kQv*eZ~
} !Pj/7JC0
} }1H=wg>\
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堆排序: &KC!*}<tx
XcfKx@l
package org.rut.util.algorithm.support; z2yJ#
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import org.rut.util.algorithm.SortUtil; my.`k'
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/** pW?&J>\6
* @author treeroot .[s2zI
* @since 2006-2-2 qE7R4>5xjO
* @version 1.0 u{f*
M,k
*/ ^U q
public class HeapSort implements SortUtil.Sort{ oFC)
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1Lj
/* (non-Javadoc) CAc
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eE]hy'{d<
*/ UlovXb
public void sort(int[] data) { G*}F5.>8(
MaxHeap h=new MaxHeap(); saZ>?Owz
h.init(data); Ff4*IOZ}(
for(int i=0;i h.remove(); C !x/
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System.arraycopy(h.queue,1,data,0,data.length); E^Gg
'1
} ?.bnIwQe
<,1fkq>,
private static class MaxHeap{ /Z%>ArAx
!u;>Wyd W
void init(int[] data){ i+vsp@d
this.queue=new int[data.length+1]; u<tk G B
for(int i=0;i queue[++size]=data; ; y.E!
fixUp(size); \gO,hST
} TH1B#Y#<J
} #=,(JmQPt
#`SD$;
private int size=0; KLQ!b,=q
9IZu$-
private int[] queue; QLq@u[A
8Jr?ZDf`
public int get() { 8<#U9]
return queue[1]; )NW6?Pu"
} 4sFv?W
":W%,`@$
public void remove() { GH4iuPh]
SortUtil.swap(queue,1,size--); !.X.tc
fixDown(1); )@g;j>
} ~6[*q~B
file://fixdown DPDe>3Mi[
private void fixDown(int k) { lPP,`
int j; .0y%5wz8j
while ((j = k << 1) <= size) { ~P f5ORoe
if (j < size %26amp;%26amp; queue[j] j++; r.3KPiYK
if (queue[k]>queue[j]) file://不用交换 /.Jb0h[W1
break; *,WP,-0
SortUtil.swap(queue,j,k); gUax'^w;V;
k = j; U8QX46Br
} CnF |LTi
} iU2KEqCm
private void fixUp(int k) { LLAa1Wq
while (k > 1) {
~=n#}{/
int j = k >> 1; pK&I^r
if (queue[j]>queue[k]) D&:yMp(
break; o4^Fo p
SortUtil.swap(queue,j,k); @e2}BhB2
k = j; v90T{1+M|4
}
j2n,f7hl.
} O}ejWP8>
)M<vAUF
} 'ktHPn
,K
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}
u=l1s1>
JiS5um=(.
SortUtil: x;E2~&E
Cpl;vQ
package org.rut.util.algorithm; ]`=X'fED
>v5k{Cbp0
import org.rut.util.algorithm.support.BubbleSort; 83ipf"]*
import org.rut.util.algorithm.support.HeapSort; !fkep=
import org.rut.util.algorithm.support.ImprovedMergeSort; 3/6/G}s
import org.rut.util.algorithm.support.ImprovedQuickSort; t!;/Z6\Pb
import org.rut.util.algorithm.support.InsertSort; RMYP"
import org.rut.util.algorithm.support.MergeSort; -e@!
import org.rut.util.algorithm.support.QuickSort; $ChK]v
6C
import org.rut.util.algorithm.support.SelectionSort; }-<zWI{p
import org.rut.util.algorithm.support.ShellSort; qCMl!g'
]dPZ .r
/** p='-\M74K
* @author treeroot deX5yrvOie
* @since 2006-2-2 )h$NS2B`
* @version 1.0 Vd9@Dy
*/ <eN R8(P
public class SortUtil { 2ef;NC.&n
public final static int INSERT = 1; [bQj,PZ&
public final static int BUBBLE = 2; b3qc_
public final static int SELECTION = 3; rnm03 '{
public final static int SHELL = 4; LJzH"K[Gg6
public final static int QUICK = 5; ZXb0Y2AVx
public final static int IMPROVED_QUICK = 6; wdE?SD s
public final static int MERGE = 7; %'Xk)-+y
public final static int IMPROVED_MERGE = 8; &~DTZgY
public final static int HEAP = 9; Z'v-F^
T6#"8qz<
public static void sort(int[] data) { 'W. Vr4
sort(data, IMPROVED_QUICK); v6a]1B
} Jc*XXu)
private static String[] name={ kMxazx1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tJI,r_
}; w5C*L)l
BNGe
exs@
private static Sort[] impl=new Sort[]{ WgR4Ix^L#
new InsertSort(), *<V^2z$y_
new BubbleSort(), @Cq? :o<
new SelectionSort(), L):U"M>]=
new ShellSort(), =v6*|
new QuickSort(), 5"Kx9n|
new ImprovedQuickSort(), ;DRTQn`m
new MergeSort(), ?[)S7\rP
new ImprovedMergeSort(), |I8Mk.Z=FA
new HeapSort() @]CF&: P A
}; jk~:\8M(A
!mfJpJ
public static String toString(int algorithm){ =H]F`[B=
return name[algorithm-1]; "kW!{n
} TJ@Cj y%
9L eNe}9v
public static void sort(int[] data, int algorithm) { $\Lyi#<
impl[algorithm-1].sort(data); LX+5|u
} ;-mdi/*g
1' w:`/_
public static interface Sort { yWIm&Q:
public void sort(int[] data); Xo5$X7m
} h\[\\m
O
*tQk;'/A]
public static void swap(int[] data, int i, int j) { !%L,*'
int temp = data; &Y>zT9]$K
data = data[j]; 9|r* pK[
data[j] = temp; ilLBCS}
} _uxPx 21g}
} mPZGA\