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。 "%~\kJ(G
插入排序: pT]M]/y/:
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package org.rut.util.algorithm.support; #!p=P<4M
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import org.rut.util.algorithm.SortUtil; >}QRMn|@H
/** w?CbATQ
* @author treeroot y e!Bfz>
* @since 2006-2-2 EM/NT/
* @version 1.0 f@l 6]z{.L
*/ D|I(2%aC
public class InsertSort implements SortUtil.Sort{ kTQ:k
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/* (non-Javadoc) /nXp5g^6(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &{QB}r
*/ &SS"A*xg
public void sort(int[] data) { ToNi<~
int temp; 8?] :>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} ~^/zCPy[w
} f uojf+i
} ja$>>5<q
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} L/(e/Jalg
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冒泡排序: $;un$ko6%
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package org.rut.util.algorithm.support; m1_?xU
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import org.rut.util.algorithm.SortUtil; P8NKpO\
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/** U`q[5U"
* @author treeroot FzmCS@yA
* @since 2006-2-2 k*|dX.C:
* @version 1.0 RsBo\#`
*/ EQPZV
K/
public class BubbleSort implements SortUtil.Sort{ y8: 0VZox
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/* (non-Javadoc) |)6(_7e9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Hn[XRsf
*/ q!W~>c!
public void sort(int[] data) { ':#?YQ}2
int temp; %sC,;^wla'
for(int i=0;i for(int j=data.length-1;j>i;j--){ P
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if(data[j] SortUtil.swap(data,j,j-1); d$ Mk
} ezTu1-m
} 1_:1cF{w
} UwtOlV:G{
} Ku LZg
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} ^vm[`M
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选择排序: ))c;DJc
lp[3z&u
package org.rut.util.algorithm.support; c?)
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import org.rut.util.algorithm.SortUtil; A{h
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/** dgssX9g37
* @author treeroot $m/-E#I#Z
* @since 2006-2-2 U[d/`
* @version 1.0 LoHWkNZ5:
*/ uuj"Er31
public class SelectionSort implements SortUtil.Sort { ^
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/* ,r5<v_
* (non-Javadoc) r0G#BPgdR
* $o\p["DP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3iYz<M
*/ yWIieztp
public void sort(int[] data) { GG"0n{>0
int temp; Js+d4``W
for (int i = 0; i < data.length; i++) { ^FgNg'"[3
int lowIndex = i; !~UI~-i'
for (int j = data.length - 1; j > i; j--) {
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if (data[j] < data[lowIndex]) { xmKa8']x
lowIndex = j; yG&kP:k<
} S "oUE_>
} <6/XE@"
SortUtil.swap(data,i,lowIndex); q<>2}[W
} UEo,:zeN[
} }SitT\%
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} :'y
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Shell排序: #BS]wj2#
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package org.rut.util.algorithm.support; }#!o^B8
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import org.rut.util.algorithm.SortUtil; _zh}%#6L
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/** U]vNcQj
* @author treeroot (/YC\x?
* @since 2006-2-2 mk\U wv
* @version 1.0 ]&/jvA=\l,
*/ ibzYY"D:
public class ShellSort implements SortUtil.Sort{ rShi"Yw
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/* (non-Javadoc) k`g+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w2]1ftY
*/ `RGZ-Q{_
public void sort(int[] data) { &8"a 7$
for(int i=data.length/2;i>2;i/=2){ ^\N2
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for(int j=0;j insertSort(data,j,i); p5F[( H|9
} ^%_B'X9
} 8YkP57Y%[Z
insertSort(data,0,1); 74gU4T
} EoU}@MjM~
L*FmJ{Yf
/** gY0*u+LF
* @param data |Q9S$l]
* @param j 6FEtq,;0w
* @param i /oiAAB27
*/ JS(KCY 9
private void insertSort(int[] data, int start, int inc) { fS#/-wugOB
int temp; &tMvs<q,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !c6lP'U
} 1<\cMY6
} 7/Lbs
} czMLvPXRx
bSz6O/A/
} LV8,nTYvE
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快速排序: !LIWoa[ F.
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package org.rut.util.algorithm.support; /SMp`Q88
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import org.rut.util.algorithm.SortUtil; :\80*[=;Z
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/** _9n.ir5YX
* @author treeroot u x:,io
* @since 2006-2-2 :Hd?0eZ|
* @version 1.0 CWBsiL
f
*/ ,}{E+e5jh7
public class QuickSort implements SortUtil.Sort{ =Rb, `%
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/* (non-Javadoc) )_j.0a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rcI(6P<*
*/ ;uoH+`pf
public void sort(int[] data) { K?I@'B'
quickSort(data,0,data.length-1); "#4PU5.
} -D!F|&$
private void quickSort(int[] data,int i,int j){ I*lq0&
int pivotIndex=(i+j)/2; boN)C?"^h
file://swap ?R,^prW{
SortUtil.swap(data,pivotIndex,j); d=>5%$:v
$ ~D`-+J
int k=partition(data,i-1,j,data[j]); ^S<Z'S
SortUtil.swap(data,k,j); #v&&GuF
if((k-i)>1) quickSort(data,i,k-1); Q 5@~0
if((j-k)>1) quickSort(data,k+1,j); %{}Jr`
3tr?-l[N\
} $ng\qJ"HF
/** ];uvE? 55
* @param data x[(2}Qd
* @param i JpuW
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* @param j >Y2Rr9
* @return /AMtT%91
*/ 5lU`o
private int partition(int[] data, int l, int r,int pivot) { !/jx4w~R
do{ \!S C;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (9cIU2e
SortUtil.swap(data,l,r); r`S]`&#}(
} j ^_G
while(l SortUtil.swap(data,l,r); Szg<;._J
return l; .5dZaI)
} k*-+@U"+
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} {qx"/;3V
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改进后的快速排序: .IKK.G
_&dGo(B
package org.rut.util.algorithm.support; ]AHUo;(f%
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import org.rut.util.algorithm.SortUtil; o1n c.2/0J
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/** t: [[5];E
* @author treeroot t8P>s})[4
* @since 2006-2-2 55!9U :{
* @version 1.0
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*/ =} vG|
public class ImprovedQuickSort implements SortUtil.Sort { ;<MaCtDt
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private static int MAX_STACK_SIZE=4096; G+%ZN
private static int THRESHOLD=10; M.IV{gj
/* (non-Javadoc) Lqch~@E&%#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .
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*/ 3)3'-wu
public void sort(int[] data) { %hTe%(e
int[] stack=new int[MAX_STACK_SIZE]; _X]?
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int top=-1; m.^6ef
int pivot; @C!q S7k)
int pivotIndex,l,r; ED$gnFa3I
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stack[++top]=0; 8wy"m=>=b}
stack[++top]=data.length-1; ]7VK&YfN
/S;?M\
while(top>0){ =Wjm_Rvk9
int j=stack[top--]; >yWJk9hf
int i=stack[top--]; 9Q.j
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pivotIndex=(i+j)/2; yqBu7E$X
pivot=data[pivotIndex]; Iy,)>V%iZV
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SortUtil.swap(data,pivotIndex,j); b#y}VY)?
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file://partition N\Hd3Om
l=i-1; 8bK}&*z<
r=j; []Fy[G.)H
do{ H{}6`;W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2`},;i~[
SortUtil.swap(data,l,r); >Y,7>ahyt
} O@$hG8:
while(l SortUtil.swap(data,l,r); 3gM{lS}h#
SortUtil.swap(data,l,j); qJK^i.e
vd;wQ
if((l-i)>THRESHOLD){ IR>Kka(B
stack[++top]=i; "E8!{
stack[++top]=l-1; LNg1q1P3
} dHu]wog
if((j-l)>THRESHOLD){ !uZ+r%
stack[++top]=l+1; ]MHQ"E?
stack[++top]=j; &B.r&K&
} dn5v|[ dJ
k]JLk"K
} s R~&S))
file://new InsertSort().sort(data); %z.G3\s0
insertSort(data); q"cFw${
}
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/** H}@|ucM"\
* @param data 2KG j !w
*/ p<+]+,|\~:
private void insertSort(int[] data) { f*I5m=
int temp; F;ZLoG*U
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yjpjJ
} G]S E
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} V4"AFArI
} .dygp"*
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} :vr,@1c
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归并排序: f&`*x t/
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package org.rut.util.algorithm.support; (r|T&'yK
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import org.rut.util.algorithm.SortUtil; Uyh
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/** IQ_0[
* @author treeroot Cjh&$aq
* @since 2006-2-2 Q?>#sN,
* @version 1.0 wiVQMgi`
*/ ?1{`~)"
public class MergeSort implements SortUtil.Sort{ @U)'UrNr~
6M6QMg^
/* (non-Javadoc) JC#@sJ4az)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dux`BKl
*/ G^R;~J*TDE
public void sort(int[] data) { Y}Dp{
int[] temp=new int[data.length]; DYl^6]
mergeSort(data,temp,0,data.length-1); dbLX}>
} UqHO S{\Sz
Z 0:2x(x9
private void mergeSort(int[] data,int[] temp,int l,int r){ JTI m`t"d=
int mid=(l+r)/2; .
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if(l==r) return ; q!,do2T
mergeSort(data,temp,l,mid); D;L :a`Y
mergeSort(data,temp,mid+1,r); TM}F9!*je
for(int i=l;i<=r;i++){ D6vn3*,&
temp=data; 7^; OjO@8
} ) &9=)G
int i1=l; N!v@!z9Mu
int i2=mid+1; ArEpH"}@
for(int cur=l;cur<=r;cur++){ `8-aHPF-
if(i1==mid+1) 6?lg
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data[cur]=temp[i2++]; ^Pf&C0xXv
else if(i2>r) Fv: %"P^
data[cur]=temp[i1++]; h<M7[p=
else if(temp[i1] data[cur]=temp[i1++]; 98]t"ny [
else 0
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data[cur]=temp[i2++]; HB}gn2.1&
}
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} KH7]`CU
KCFwO'
} mx[^LaR>v
qh'BrYu*
改进后的归并排序: JA}'d7yEa
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package org.rut.util.algorithm.support; @Otc$hj
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import org.rut.util.algorithm.SortUtil; ^ZlV1G;/W@
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/** {q)B@#p
* @author treeroot JXAyF6
$
* @since 2006-2-2 zJ:r0Bt
* @version 1.0 &>jkfG
*/ C{Ug ?hVP
public class ImprovedMergeSort implements SortUtil.Sort { U{_s1
7`/qL "
private static final int THRESHOLD = 10; CJOl|"UyJ
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/* qWpC e*C
* (non-Javadoc) v6VhXV6$|
* 8_m9CQ6 i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tb{{oxa,k
*/ QT$1D[>
public void sort(int[] data) { 55DzBV
int[] temp=new int[data.length]; Vr1|%*0Tv
mergeSort(data,temp,0,data.length-1); >l1Yhxd_0*
} IpJ v\zH7
iq:[+
private void mergeSort(int[] data, int[] temp, int l, int r) { AL7O -D
int i, j, k; O-5U|wA
int mid = (l + r) / 2; hyKg=Foq
if (l == r) Zsogx}i-
return; 3R*@m
if ((mid - l) >= THRESHOLD) X-,y[ )
mergeSort(data, temp, l, mid); LwPM7S~ *
else cv4M[]U~
insertSort(data, l, mid - l + 1); 2S6EDXc
if ((r - mid) > THRESHOLD) =.oWg uzu
mergeSort(data, temp, mid + 1, r); uq%3;#[0
else Nj_sU0Dt
insertSort(data, mid + 1, r - mid); C<t>m_t9
m#$za7
for (i = l; i <= mid; i++) { }?J5!X
temp = data; RM1uYFs<
} &] 6T^.
for (j = 1; j <= r - mid; j++) { --YUiNhh
temp[r - j + 1] = data[j + mid]; mJ>99:W+
} /&:9VMMj
int a = temp[l]; .K1E1Z_
int b = temp[r]; BDRVT Y(s
for (i = l, j = r, k = l; k <= r; k++) { Vk_&W.~
if (a < b) { t)Q@sKT6
data[k] = temp[i++]; ('-}"3
a = temp; X9A[
} else { |a$w;s>\
data[k] = temp[j--]; Z{4aGp*
b = temp[j]; AdW2o|Uap
} rOHW
} TQd FC\@f"
} Q|KD/s??
&]F|U3
/** idS
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* @param data QeJ.o.m{
* @param l SzlfA%4+GR
* @param i !# :$u=
*/ !TL}~D:J
private void insertSort(int[] data, int start, int len) { K('lH-3wS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 51opP8
} rY?F6'}
} >MWpYp
} ynbpew aa
} P&3/nL$9N
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堆排序: ;u};&sm
&9_\E{o%]
package org.rut.util.algorithm.support; <o7#?AcPu
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import org.rut.util.algorithm.SortUtil; (g/X(3
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/** 50GYL5)q
* @author treeroot O;e8ft
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* @since 2006-2-2 e_k
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* @version 1.0 lhA
s!\F
*/ 9>&tMq
public class HeapSort implements SortUtil.Sort{ QcG5PV
EhPVK6@
/* (non-Javadoc) .hlQ?\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <S8W~wC
*/ o+_/)c
public void sort(int[] data) { iQzX-a|4]
MaxHeap h=new MaxHeap(); T[XP\!z]B!
h.init(data); \_Kt6=
for(int i=0;i h.remove(); 9X$#x90
System.arraycopy(h.queue,1,data,0,data.length); uWB:"&!^
} T
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vMX6Bg8
private static class MaxHeap{ n*i'v tQ8
ow+Dd[i
void init(int[] data){ EdAR<VfleA
this.queue=new int[data.length+1]; 3hXmYz(
for(int i=0;i queue[++size]=data; b;J0'o^G|
fixUp(size); hHc^ZA
} RQpIBsj
} 2WPF{y%/
i$JG^6,O
private int size=0; ]fADaw-R
rbK#a)7
private int[] queue; nK h%E-c
<duBwkiG
public int get() { /iTUex7T
return queue[1]; > 1r[]&8
} B221}t
|)?aH2IL
public void remove() { KZ!N{.Jk
SortUtil.swap(queue,1,size--); 1t[;` iZ
fixDown(1); fATA%eA8;
} H6ky)kF&
file://fixdown &V#z kW
private void fixDown(int k) { {yHB2=nI
int j; 0^&(u:~
while ((j = k << 1) <= size) { uspkn1-
if (j < size %26amp;%26amp; queue[j] j++; ;c X^8;F0
if (queue[k]>queue[j]) file://不用交换 [-E{}FL|
break; OY^n0Zof,
SortUtil.swap(queue,j,k); ^%5~;
k = j; J+@MzkpK
} i.&Kpw9;m
} XSp x''l
private void fixUp(int k) { jom}_
while (k > 1) { GSGyF
int j = k >> 1; hC|5e|S
if (queue[j]>queue[k]) [%7;f|p?
break; NMl ?Y uEv
SortUtil.swap(queue,j,k); K_AtU/
k = j; c?.r"5#
} k=T-L
} ]g>m? \'n
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} *K+jsVDY
0q[p{_t`
} N)y^</Ya
{=bg5I0|a
SortUtil: ]&C:>
FQk_#BkK
package org.rut.util.algorithm; Mhb '^\px
H@%7\g,`
import org.rut.util.algorithm.support.BubbleSort; vo(g0Au)
import org.rut.util.algorithm.support.HeapSort; ?qg^WDs$
import org.rut.util.algorithm.support.ImprovedMergeSort; bkr~13S{+
import org.rut.util.algorithm.support.ImprovedQuickSort; q GpP,
import org.rut.util.algorithm.support.InsertSort; I|g@W_
import org.rut.util.algorithm.support.MergeSort; mUrS&&fu8
import org.rut.util.algorithm.support.QuickSort; ?w]"~
import org.rut.util.algorithm.support.SelectionSort; A6^p}_
import org.rut.util.algorithm.support.ShellSort; ?kL|>1TY
1V|< A
/** ( zn_8s
* @author treeroot 5q5 )uv"
* @since 2006-2-2 "UQr :/
* @version 1.0 Gur8.A;Y
*/ V[o7Jr~
public class SortUtil { aF&r/j+}o
public final static int INSERT = 1; +{,N X
public final static int BUBBLE = 2; a>o"^%x
public final static int SELECTION = 3; KTG:I@|C
public final static int SHELL = 4; k4qLB1&,
public final static int QUICK = 5; z5XYpi_;[
public final static int IMPROVED_QUICK = 6; _M8G3QOx
public final static int MERGE = 7; Z/2,al\
public final static int IMPROVED_MERGE = 8; 3]O`[P,*%
public final static int HEAP = 9; IL~]m?'V(
/S:w&5e
public static void sort(int[] data) { MU_!&(X_
sort(data, IMPROVED_QUICK); S}oG.r
9
} )-bD2YA{
private static String[] name={ 5h`m]#YEG
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NuC-qG#
}; r NxrQ
K\RWC4
private static Sort[] impl=new Sort[]{ Pm$F2YrO3
new InsertSort(),
#4vV%S
new BubbleSort(), `Y\gSUhzS
new SelectionSort(), yGb a
new ShellSort(), :3f-9aRC!
new QuickSort(), S~+O`y^
new ImprovedQuickSort(), !]$V9F{K
new MergeSort(), WGH%92
new ImprovedMergeSort(), U7^7/s/.
new HeapSort() i&'#+f4t
}; 't
+"k8
9@:BK;Fi
public static String toString(int algorithm){ QCeMKjCmY
return name[algorithm-1]; JB&G~7Q85
} H_VEPp,T
PT3>E5`N u
public static void sort(int[] data, int algorithm) { CQ@LmTW[
impl[algorithm-1].sort(data); 2 ]L=s3
} (C,e6r Y
U(U@!G)
public static interface Sort { %tT"`%(+
public void sort(int[] data); Z;ZuS[ZA
} T>d\%*Q+B
C">`' G2
public static void swap(int[] data, int i, int j) { 3(1]FKZtt
int temp = data; b6 $,Xh
data = data[j]; T!MZ+Ph`F
data[j] = temp; d; 9*l!CF
} x>}B#
} )VNM/o%Q