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。 FG?69b>
插入排序: E"E Bj7<s
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package org.rut.util.algorithm.support; e``X6=rcG
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import org.rut.util.algorithm.SortUtil; |"7^9(
/** QasUgZ
* @author treeroot N*k` 'T
* @since 2006-2-2 -Qt>yzD3
* @version 1.0 ;:w?&4
*/ (sngq{*%%z
public class InsertSort implements SortUtil.Sort{ F<KUVe
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/* (non-Javadoc) Rf&~7h'+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~AD%aHR
*/ F?+K~['i
public void sort(int[] data) { w(sD}YA)
int temp; L5E|1T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1T{A(<:o$
} U1+X!&OCp
} Bf&,ACOf
} WVP^C71
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} M]S&vE{D
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冒泡排序: E(5'vr0
Ol }^'7H
package org.rut.util.algorithm.support; 1NP(3yt%
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import org.rut.util.algorithm.SortUtil; [OH9/"
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/** 1>JUI5 {
* @author treeroot d+5KHfkK
* @since 2006-2-2 !y8/El
* @version 1.0 l?+67cQLA
*/ XJ3 5Z+M
public class BubbleSort implements SortUtil.Sort{ _L?`C
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/* (non-Javadoc) mN_KAln
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :{iS0qJ
*/ t%<@k)hd~G
public void sort(int[] data) { <i~MBy.
(
int temp; MX=mGfoa
for(int i=0;i for(int j=data.length-1;j>i;j--){ |.A#wjF9
if(data[j] SortUtil.swap(data,j,j-1); cU,]^/0Y
} rt\i@}
} A4}6hG#
} gAy,uP~,
} K_@[%
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} 6K/j,e>L
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选择排序: [LwmzmV+F
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package org.rut.util.algorithm.support; ,S|v>i,@
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import org.rut.util.algorithm.SortUtil; *vx!twu1o
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/** ZH9sf ~7
* @author treeroot Q:.q*I!D<4
* @since 2006-2-2 (lDbArqy
* @version 1.0 n[jyhBf\W
*/ VA9"
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public class SelectionSort implements SortUtil.Sort { k<mfBNvuo
N# Ru`;
/* 80X #V
* (non-Javadoc) a$f$CjQ
* Kh)SgJ3B@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <NV[8B#k]
*/ 9{gY|2R_
public void sort(int[] data) { 6}aIb .j
int temp; "Qf X&'09
for (int i = 0; i < data.length; i++) { `"N56
int lowIndex = i; jU1 ([(?"
for (int j = data.length - 1; j > i; j--) { ?8cgQf$
if (data[j] < data[lowIndex]) { {uO=Wkp~7
lowIndex = j; s~ZLnEb
} `QH-VR\_
} NaeG2>1
SortUtil.swap(data,i,lowIndex); x|#R$^4CY
} JXG%Cx!2}
} \KlO j%s
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} z(sfX}%
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Shell排序: #nQZ/[|
ac8+?FpK #
package org.rut.util.algorithm.support; +|#lUXC
!d@q T.
import org.rut.util.algorithm.SortUtil; ),#%jc2_^
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/** MfJ;":]O!
* @author treeroot &5]&6TD6
* @since 2006-2-2 0n5{Wr$
* @version 1.0 jB+K)NXHL
*/ !Cq2<[K#
public class ShellSort implements SortUtil.Sort{ !f
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/* (non-Javadoc) LvlVZjT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |@{4zoP_N
*/ =Q#}
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public void sort(int[] data) { xgw[)!g^\
for(int i=data.length/2;i>2;i/=2){ {+CW_ce
for(int j=0;j insertSort(data,j,i); m+y5Q&;f
} inO)Y]|f
} Nj8 `<Sl
insertSort(data,0,1); 5)g6yV'
} :VP*\K/:
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/** ~>h_#sIBC
* @param data ,{"%-U#z
* @param j Wn61;kV_)
* @param i C&Nga
`J
*/ |"4+~z%/9!
private void insertSort(int[] data, int start, int inc) { R>BZQugZ~
int temp; QU4/hS;Ux
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cg16|
}
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} 3q{op9_T7
} [)K?e!c8
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} \k?Fu=@
U ?vG?{A
快速排序: T#ktC0W]h
`zQ2i}Uju
package org.rut.util.algorithm.support; TQXp9juK
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import org.rut.util.algorithm.SortUtil; JQ-O=8]
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/** .UxbwTup
* @author treeroot YVcFCl
* @since 2006-2-2 5](-(?k}~
* @version 1.0 *G'R+_tdE
*/ G/l 28yt
public class QuickSort implements SortUtil.Sort{ N~c Y ~a
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/* (non-Javadoc) 3em&7QM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [1OX:O|
*/ in>Os@e#
public void sort(int[] data) { sL;
quickSort(data,0,data.length-1); l*~ ".q;S
} M1{ru~Z9
private void quickSort(int[] data,int i,int j){ '@~\(SH
int pivotIndex=(i+j)/2; \Y37wy4
file://swap m tPmVze
SortUtil.swap(data,pivotIndex,j); woQ UrO(
1N8:,bpsT
int k=partition(data,i-1,j,data[j]); dvPK5+0W?
SortUtil.swap(data,k,j); Wq5 Nc
if((k-i)>1) quickSort(data,i,k-1); @xKfqKoqg
if((j-k)>1) quickSort(data,k+1,j); 7w}PYp1Z'~
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} /z'fFl^6O
/** *@2+$fgz
* @param data ,hMdxZJd
* @param i 9j[lr${A
* @param j a]JQZo1$
* @return nSMw 5
*/ hUL5V1-j
private int partition(int[] data, int l, int r,int pivot) { ]3u$%vc
do{ d A[MjOd3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L[Z
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SortUtil.swap(data,l,r); y `)oD0)Fj
} H1!u1k1nl
while(l SortUtil.swap(data,l,r); E5>y?N
return l; UEm~5,>$0
} =f{)!uW<4
vKX6@eg"
} R
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改进后的快速排序: 17hFwo`
';HNQe?vT
package org.rut.util.algorithm.support; k15fy"+Ut
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import org.rut.util.algorithm.SortUtil; #CRAQ#:45(
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/** 8-f2$
* @author treeroot m+jW+
* @since 2006-2-2 Cf~H9
* @version 1.0 pwu8LQ3b{O
*/ !YM;5vte+
public class ImprovedQuickSort implements SortUtil.Sort { ,WvCslZ
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private static int MAX_STACK_SIZE=4096; f( %r)%
private static int THRESHOLD=10; 5V"Fy&}:
/* (non-Javadoc) MQ~OG9.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } `X.^}oe
*/ ~8rVf+bg3
public void sort(int[] data) { c8R#=^ DD
int[] stack=new int[MAX_STACK_SIZE]; t<UtSkE1
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int top=-1; 58v q5j<V
int pivot; 4u!<3-3Zy
int pivotIndex,l,r; S2^Ckg
IY* ~df
stack[++top]=0; l(o;O.dLt
stack[++top]=data.length-1; }]fJ[KbDp
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while(top>0){ :)djHPP*
int j=stack[top--]; kdr?I9kwW
int i=stack[top--]; !F^j\
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pivotIndex=(i+j)/2; FQ"
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pivot=data[pivotIndex]; :o2^?k8k
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SortUtil.swap(data,pivotIndex,j); ~|FKl%
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file://partition *5Mg^}ZC5
l=i-1; t;^NgkP{$
r=j; 7KB:wsz^
do{ -5&|"YYjr{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {9/ayG[98
SortUtil.swap(data,l,r); U\<8}+x
} &EZq%Sd
while(l SortUtil.swap(data,l,r); W7sx/O9
SortUtil.swap(data,l,j); +"~~;J$
}3}{} w0Y
if((l-i)>THRESHOLD){ }mhD2 ' E
stack[++top]=i; 4R;6u[a]u
stack[++top]=l-1; |afzW=8'
} ]>:LHW
if((j-l)>THRESHOLD){ Za5bx,^
stack[++top]=l+1; qGH
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stack[++top]=j; ,(D:cRN
} S8 zc1!
^")SU(`
} bOY<C%;C
file://new InsertSort().sort(data); P
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insertSort(data); A,WZ}v}_
} BLno/JK0}
/** D09/(%4j
* @param data NHL -ll-R
*/ 96 ozt UK
private void insertSort(int[] data) { ;$0)k(c9
int temp; ME9jN{ le
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _ +"V5z
} qaj~q(j~C
}
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} t7(#Cuv-
O<H5W|cM
} <<ze84E
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归并排序: xM#+jI
GD]yP..
package org.rut.util.algorithm.support; C}7c:4c
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import org.rut.util.algorithm.SortUtil; z. 6-D
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/** gGtl*9a=
* @author treeroot ]V `L\
* @since 2006-2-2 52zD!(
* @version 1.0 nw)yK%`;M
*/ ++Z,U
public class MergeSort implements SortUtil.Sort{ 9q4%s?)j
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/* (non-Javadoc) i6.HR?n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9"jhS0M
*/ o'`:$
(
public void sort(int[] data) { ipIexv1/S
int[] temp=new int[data.length]; 8}Qmhm`_j=
mergeSort(data,temp,0,data.length-1); IpRdGT02
} ]P5|V4FXo
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private void mergeSort(int[] data,int[] temp,int l,int r){ t/3t69 \x
int mid=(l+r)/2; YpGG^;M$
if(l==r) return ; tbNIl cAWS
mergeSort(data,temp,l,mid); 3~r>G
mergeSort(data,temp,mid+1,r); {cYS0%Go
for(int i=l;i<=r;i++){ zx(=ArCRr
temp=data; 6oQSXB@
} -=+@/@nV
int i1=l; {p70(
]v
int i2=mid+1; 1&wI*4
for(int cur=l;cur<=r;cur++){ ) vKZs:
if(i1==mid+1) Q;'{~! =
data[cur]=temp[i2++]; h"/y$
else if(i2>r) 0fpxr`
data[cur]=temp[i1++]; }kCaTI?@#
else if(temp[i1] data[cur]=temp[i1++]; :M |<c9I
else qZcRK9l]F1
data[cur]=temp[i2++]; mfI>1W(
} p1O[QQ|
} 7a<-}>sU
HqZ3]
} ?FRuuAS
;:Yz7<>Y,
改进后的归并排序: t& *K
Y[8GoqE|
package org.rut.util.algorithm.support; L
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import org.rut.util.algorithm.SortUtil; T+0Z2H
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/** fBi6%
#
* @author treeroot X<j(AAHE
* @since 2006-2-2 $U]KIHb
* @version 1.0 _UqE
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*/ nKO4o8js{{
public class ImprovedMergeSort implements SortUtil.Sort { D=0^"7K
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private static final int THRESHOLD = 10; ?_ V oO
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/* ^`MGlI}
* (non-Javadoc) f\{ynC2m
* -%g$~MZ?'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5g$]ou
*/ }%@q; "9`
public void sort(int[] data) { 8}^R jMgI
int[] temp=new int[data.length]; d
hp-XIA;
mergeSort(data,temp,0,data.length-1); 9S y |:J0
} (sfy14>\
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private void mergeSort(int[] data, int[] temp, int l, int r) { ZSUbPz
int i, j, k; W{1"
int mid = (l + r) / 2; $$tFP"pZ
if (l == r) d<@SRHP(
return; VsrYU@V
if ((mid - l) >= THRESHOLD) ^_Ap?zn
mergeSort(data, temp, l, mid); }+F&=-P)
else [ 1$p}x
insertSort(data, l, mid - l + 1); GgNqc i,
if ((r - mid) > THRESHOLD) &6#>a"?"
mergeSort(data, temp, mid + 1, r); FS1>
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else 3rUuRsXn
insertSort(data, mid + 1, r - mid); 7@6B\':
[2 yxTK
for (i = l; i <= mid; i++) { g9XAUZe
temp = data; /ta5d;@
} /|HVp
for (j = 1; j <= r - mid; j++) { t
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temp[r - j + 1] = data[j + mid]; h5do?b v!
} uDWxIP,m
int a = temp[l]; oQS_rv\Ber
int b = temp[r]; 3R=R k
for (i = l, j = r, k = l; k <= r; k++) { ~hk;OB;
if (a < b) { E;vF
:?|
data[k] = temp[i++]; G""L1?
a = temp; +pefk+
} else { vK10p)ZV
data[k] = temp[j--]; 9bxBm
b = temp[j]; ,1! ~@dhs
} W~QH"Sq
} |RA|nu
} &-hz&/A,
>B~vE2^tQ~
/** ?:
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* @param data A@o:mZ+XN(
* @param l 8=Z]?D=
* @param i 6M/*]jLq4
*/ yltzf
#%
private void insertSort(int[] data, int start, int len) { wyVQV8+&>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A;'*>NS
} 'ZUB:R@[
} p[J 8
r{'
} ,e{|[k
} A$a>=U|Z8
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堆排序: O5lP92],
v1m'p:7uGB
package org.rut.util.algorithm.support; itpljh
A{QXzoWkg0
import org.rut.util.algorithm.SortUtil; ]5_6m;g
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/** S
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* @author treeroot l"ZfgJ}W
* @since 2006-2-2 Wi5rXZS
* @version 1.0 M#U #I:z%
*/ e]qbh_A
public class HeapSort implements SortUtil.Sort{ (0cL!
N;;
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/* (non-Javadoc) c@ea
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pp!>: %
*/ 1/l;4~p7'
public void sort(int[] data) { {Iu9%uR>@
MaxHeap h=new MaxHeap(); jb5nL`(j$
h.init(data); KXtc4wra
for(int i=0;i h.remove(); TlA*~HG<Q
System.arraycopy(h.queue,1,data,0,data.length); iax6o+OG|
} F\H^=P
Jm5&6=
private static class MaxHeap{ bTrQ(qp
-2\%?A6L
void init(int[] data){ j0]|$p
this.queue=new int[data.length+1]; /;K?Y#mf~j
for(int i=0;i queue[++size]=data; fho$:S
fixUp(size); [tP6FdS/M=
} \`MX\OR
} 1I1Z),
Og8'K=O#
private int size=0; |fd}B5!c
GY[+HgT
private int[] queue; Z
^w5x :
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public int get() { Bp.z6x4
return queue[1]; QSNLo_z
} +~H mPQ
' >F_y t9
public void remove() { 82q_"y>6
SortUtil.swap(queue,1,size--);
F[65)"^
fixDown(1); }$zJdf,\
} [HV9KAoA
file://fixdown a BHV
private void fixDown(int k) { j+E[[
int j; F9Bj$`#)
while ((j = k << 1) <= size) { RwR.*?#
if (j < size %26amp;%26amp; queue[j] j++; G.}Ex!8R7_
if (queue[k]>queue[j]) file://不用交换 _s&sA2r<
break; c[DC
SortUtil.swap(queue,j,k); ju@5D
h
k = j; j$f `:A
} [p%OIqC`pB
} oV7A"8L^a
private void fixUp(int k) { [)ybPIv]
while (k > 1) { &7gE=E(M
int j = k >> 1; pR
VL}^Rk
if (queue[j]>queue[k]) >UQ`@GdafR
break; KioD/
SortUtil.swap(queue,j,k); ZYBK'&J4m
k = j; h>l
} d:x=g i!
} }&o*ZY-1
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} t\p_QWnF
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4qI
} S(5aJ[7Zm
DJF-J#
SortUtil: 6J\Yi)v<
>;ucwLi
package org.rut.util.algorithm; g@ ZZcBx
-i}@o1o\
import org.rut.util.algorithm.support.BubbleSort; b,7@)sZ*
import org.rut.util.algorithm.support.HeapSort; @+S5"W
import org.rut.util.algorithm.support.ImprovedMergeSort; |0wUOs*5
import org.rut.util.algorithm.support.ImprovedQuickSort; 9%VNzPzf
import org.rut.util.algorithm.support.InsertSort; [P*w$Hn
import org.rut.util.algorithm.support.MergeSort; h2Pvj37
import org.rut.util.algorithm.support.QuickSort; Ef}rMkv
import org.rut.util.algorithm.support.SelectionSort; rdL>yT/A
import org.rut.util.algorithm.support.ShellSort; `B^HW8
b;[u=9ez
/** gda3{g7<)
* @author treeroot u/@dWeY[]
* @since 2006-2-2 aXSTA,%
* @version 1.0 wN])"bmB
*/ .-:R mYGR
public class SortUtil { `GG PkTN
public final static int INSERT = 1; U
=()T}b>
public final static int BUBBLE = 2; &UWSf
public final static int SELECTION = 3; )eFq0+6*)
public final static int SHELL = 4; ^c9~~m16+
public final static int QUICK = 5; *d,u)l :S
public final static int IMPROVED_QUICK = 6; 9tnW:Nw~
public final static int MERGE = 7; D;VFMP
public final static int IMPROVED_MERGE = 8; =a_B' ^`L
public final static int HEAP = 9; w:}RS.AK
8#Q=CTjF
public static void sort(int[] data) { iCouGd}
sort(data, IMPROVED_QUICK); {$<X\\&r
} >D';i\2j&
private static String[] name={ d.7pc
P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |<@X* #X5
}; ZW}0{8Dk
*lN>RWbM%
private static Sort[] impl=new Sort[]{ &k5 Z|d|
new InsertSort(), >^@/Ba$h
new BubbleSort(), XK)qDg
new SelectionSort(), _Z:WgO].
new ShellSort(), hr8v O"tZN
new QuickSort(), CbJ ]}Z
new ImprovedQuickSort(), |WiK*
new MergeSort(), T/%s7!E
new ImprovedMergeSort(), \h%/Cp+p
new HeapSort() C^po*(W6
}; ?PIOuN=
:VPZGzK4
public static String toString(int algorithm){ <B;l).[6
return name[algorithm-1]; r )cGee
} e1dT~l
5o~;0K]
public static void sort(int[] data, int algorithm) { Ksq{=q-T
impl[algorithm-1].sort(data); tZtyx;EP
} (8<U+)[tPy
1)aB']K%
public static interface Sort { :bLLN
public void sort(int[] data); FuNc#n>
} CL*i,9:NR
c}II"P
public static void swap(int[] data, int i, int j) { R}Ih~zw
int temp = data; |wKC9 O@%
data = data[j]; Tn+6:<OFdO
data[j] = temp; 9L}=xX`>?
} ZJ} V>Bu-
} +2kJuoj: