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。 y\zRv(T=
插入排序: &z?:s
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package org.rut.util.algorithm.support; L%
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import org.rut.util.algorithm.SortUtil; WO{ET
/** evGUl~</~
* @author treeroot >6A8+=
* @since 2006-2-2 48RSuH
* @version 1.0 zaG1
*/ Q8^g WBc
public class InsertSort implements SortUtil.Sort{ C!}t6
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/* (non-Javadoc) I6rB_~]h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) maVfLVx-
*/ 3h`_Qv%g
public void sort(int[] data) { Jo4iWJpK
int temp; \7] SG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H1-eMDe
} ")D5ulb\
} @=dwvl' W
} 89\DS!\x9
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} l9#@4Os
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冒泡排序: N'~l,{
uc]`^,`2/
package org.rut.util.algorithm.support; \JbOT%1
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import org.rut.util.algorithm.SortUtil; ][ 1
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/** n
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* @author treeroot +MyXIWmD
* @since 2006-2-2 # "!q_@b,D
* @version 1.0 m*~Iu<5L
*/ &%r<_1
public class BubbleSort implements SortUtil.Sort{ ]? %*3I
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _:~I(c6
*/ >o )v
public void sort(int[] data) { dzs(sM=
int temp; #H.DnW
for(int i=0;i for(int j=data.length-1;j>i;j--){ A^vvw~!d
if(data[j] SortUtil.swap(data,j,j-1); xP-\)d-.aN
} 1fqJtP6
} %![3?|8~
} T,/:5L9
} =:_DXGW2H
0[.T`tpN'
} ^0HgE;4
lw=!v%L
选择排序: q#\4/Dt
>!WH%J
package org.rut.util.algorithm.support; 'nN'bVl/
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import org.rut.util.algorithm.SortUtil; k nljc^
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/** xl ,(=L]
* @author treeroot L~{3W
* @since 2006-2-2 W]I+Rlv)U
* @version 1.0 $LW8 vo7
*/ I6Ga'5bV
public class SelectionSort implements SortUtil.Sort { W9:(P
q!AcMd\
/* p mUG`8SY
* (non-Javadoc) .O6(QI*
* s2"<<P[q'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HpIWH*
*/ =fK6P6'B
public void sort(int[] data) { yR1v3D4E
int temp; `Ha<t. v(
for (int i = 0; i < data.length; i++) { c]68$;Z7
int lowIndex = i; 'a G`qPB
for (int j = data.length - 1; j > i; j--) { N2.Ym;^
if (data[j] < data[lowIndex]) { 2:G/Oj h&]
lowIndex = j; WB 5M![
} ?,w9e|
} }~Ir&
SortUtil.swap(data,i,lowIndex); dfT
} /a}`
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} K)W:@,*
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} Yht |^ =a
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Shell排序: R\-]t{t`
Ynl Zyw!
package org.rut.util.algorithm.support; S|r,RBeZ
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import org.rut.util.algorithm.SortUtil; +%R{j|8#
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/** [Gc9
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* @author treeroot z[WdJN{
* @since 2006-2-2 {
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* @version 1.0 6[Wv g
*/ Axw+zO
public class ShellSort implements SortUtil.Sort{ h^'+y1
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/* (non-Javadoc) rA /T>ZM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &] O^d4/
*/ X#Hl<d2
public void sort(int[] data) { `\yQn7 Oq
for(int i=data.length/2;i>2;i/=2){ ZuT5}XxF
for(int j=0;j insertSort(data,j,i); 1F R
} *_@$"9
} |O{kv}YZ
insertSort(data,0,1); xE-
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} 8*^*iEsR
LoW}!,|
/** *g"Xhk
* @param data 4 {+47=n
* @param j x:+]^?}r
* @param i (}
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*/ BG/RNem
private void insertSort(int[] data, int start, int inc) { 6iS7Hao"
int temp; HL%|DCo
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,L\>mGw
} up2wkc8
} H18pVh
} t**MthnW
h/]));p
} dg#w!etB
R%"'k<`#
快速排序: H3+P;2{
465?,EpS
package org.rut.util.algorithm.support; :@~mN7O*
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import org.rut.util.algorithm.SortUtil; \?vn0;R4
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/** #9t3 <H[
* @author treeroot FiKGB\_]
* @since 2006-2-2 XA\wZV
|{
* @version 1.0 ?u>A2Vc!
*/ U% OlYP$g
public class QuickSort implements SortUtil.Sort{ Q-KBQc
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/* (non-Javadoc) H^+Znmo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e17]{6y
*/ x#fv<Cj4
public void sort(int[] data) { ''}2JJU{
quickSort(data,0,data.length-1); A'n{K#
} WNSEc%
private void quickSort(int[] data,int i,int j){ J7wIA3.O
int pivotIndex=(i+j)/2; o\X|\nUk
file://swap MH=Ld=i
SortUtil.swap(data,pivotIndex,j); ,zh_-2^X
T:g%b @
int k=partition(data,i-1,j,data[j]); hbm#H7Y
SortUtil.swap(data,k,j); d(C5i8d
if((k-i)>1) quickSort(data,i,k-1); e6Kyu*
if((j-k)>1) quickSort(data,k+1,j); )H+ p6<
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} ; jrmr`l=
/** n&8SB'-r
* @param data a~Yq0 d?`D
* @param i %v[KLMo'(
* @param j D&1(qi=x&
* @return ]xPy-j6C
*/ !ezy
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private int partition(int[] data, int l, int r,int pivot) { Ks-$([_F
do{ zGa
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6foiN W+
SortUtil.swap(data,l,r); {Gw{W&<
} t(UdV
while(l SortUtil.swap(data,l,r); *9(E0"
return l; 3-BC4y/
} c"P:p%\m&u
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} LeYI<a@n@$
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改进后的快速排序: ($t;Xab
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package org.rut.util.algorithm.support; eg"A?S
[X ]XH
import org.rut.util.algorithm.SortUtil; KxDfPd+j[
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/** zA|)9Dq
* @author treeroot ~-'-<-
* @since 2006-2-2 gSkY c{b
* @version 1.0 wI?AZd;`'
*/
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public class ImprovedQuickSort implements SortUtil.Sort { oo|Nu+
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private static int MAX_STACK_SIZE=4096; } wx(P3BHD
private static int THRESHOLD=10; f<>CSjQ4c
/* (non-Javadoc) fzUG1|$e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $?uLFD
*/ oG
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public void sort(int[] data) { "Rn@yZV
int[] stack=new int[MAX_STACK_SIZE]; <4TF ]5
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int top=-1; R,8Tt!n
int pivot; PsBLAr\ah
int pivotIndex,l,r; u24XuSe$
-m$2"_
stack[++top]=0; .dj}y
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stack[++top]=data.length-1; [ ^gb6W9Y
o90[,
while(top>0){ p,14'HS%@
int j=stack[top--]; I7W?}bR*6
int i=stack[top--]; v.c.5@%%o
*S'?u_Y7
pivotIndex=(i+j)/2; h$p}/A
pivot=data[pivotIndex]; 4)Ew
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SortUtil.swap(data,pivotIndex,j); "8E=*2fcw
=.qPjp_Qd
file://partition 37*2/N2
l=i-1; X39%O'
r=j; ,m M7g
do{ e^v\K[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #JR$RH
SortUtil.swap(data,l,r); `bWc<4T
} @{ L|&Mk!
while(l SortUtil.swap(data,l,r); B?ipo,2~{
SortUtil.swap(data,l,j); Nzb=h/;
k0D):
if((l-i)>THRESHOLD){ -/_hO$|W
stack[++top]=i; le6eorK8
stack[++top]=l-1; 8L[\(~Zf
} #4V->I
if((j-l)>THRESHOLD){ 7A{Z1[7
stack[++top]=l+1; seb/rxb
stack[++top]=j; HBA|NV3.
} sn+ kFvk}S
o;>qsn8
} 6n
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file://new InsertSort().sort(data); w I[Hoi
V
insertSort(data); -c#vWuLl
} c_Iq!MH
/** Y6a9S`o
* @param data G6qFAepwi
*/ }S{VR(i`J
private void insertSort(int[] data) { F<{k~
int temp; 6iY(RYZ7-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5kCXy$"%
} j{@li1W@
} ~xcU6@/
} y2nT)nL
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} D4*_/,}
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归并排序: [@ NW
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package org.rut.util.algorithm.support; {ITxHt
4^!%>V"d/
import org.rut.util.algorithm.SortUtil; |#Q0UM|'Q
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/** a[=ub256S
* @author treeroot Wr8}=\/
* @since 2006-2-2 dwb ^z+
* @version 1.0 T*k}E
*/ M$} AJS%8
public class MergeSort implements SortUtil.Sort{ mqDI'~T9 u
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/* (non-Javadoc) rpEN\S%7P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~SI G0U8
*/ ;8b!T
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public void sort(int[] data) { [buLo*C4:
int[] temp=new int[data.length]; +kq+x6&
mergeSort(data,temp,0,data.length-1); `2y?(BJp
} 0Kg?X
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private void mergeSort(int[] data,int[] temp,int l,int r){ &td
int mid=(l+r)/2; f67t.6Vw2+
if(l==r) return ; Su<>UsdUC
mergeSort(data,temp,l,mid); 0iKAg
mergeSort(data,temp,mid+1,r); !:v7SRUXb
for(int i=l;i<=r;i++){ $Qxy@vU
temp=data; l!:L<B
} H>%L@Btw
int i1=l; .&n!4F'
int i2=mid+1; 'Jd*r(2d
for(int cur=l;cur<=r;cur++){ kpMo7n
if(i1==mid+1) .u]d5z
BR
data[cur]=temp[i2++]; v=DC3oh-
else if(i2>r) Q~` {^fo1
data[cur]=temp[i1++]; P!lfk:M^;
else if(temp[i1] data[cur]=temp[i1++]; T>,[V:
else
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data[cur]=temp[i2++]; V/RV,K1/
} ^JGwCHeb|H
} PoLk{{l3
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} |3>%(4
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改进后的归并排序: {9{PU&?(
t(}g;O-
package org.rut.util.algorithm.support; 7v}(R:*
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import org.rut.util.algorithm.SortUtil; ;_0frX
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/** LtV,djk
* @author treeroot At&kW3(
* @since 2006-2-2 ,lVQ-qw5
* @version 1.0 ,x?Jrcx~'C
*/ < Yc)F.:
public class ImprovedMergeSort implements SortUtil.Sort { -8v:eyc
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private static final int THRESHOLD = 10; J|([(
D-e?;<
/* q``/7
* (non-Javadoc) fnIF<Zt
* w8zr0z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }|wC7*^)
*/ *d31fBCk%
public void sort(int[] data) { Zh_3ydMD1
int[] temp=new int[data.length]; gL`aLg_
mergeSort(data,temp,0,data.length-1); /x\~5cC
} I A$=
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private void mergeSort(int[] data, int[] temp, int l, int r) { [kMWsiZ
int i, j, k; 3E}j*lo
int mid = (l + r) / 2; U|8?$/*\
if (l == r) |o@U
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return; #k,.xMJ~
if ((mid - l) >= THRESHOLD) SAE'y2B*
mergeSort(data, temp, l, mid); z'\BZ5riX<
else l
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insertSort(data, l, mid - l + 1); ]l`V#Rd
if ((r - mid) > THRESHOLD) mZ.gS1Dq
mergeSort(data, temp, mid + 1, r); =h.`
ey
else iDdR-T|
insertSort(data, mid + 1, r - mid); U|aEyMU
kIRjoKf <F
for (i = l; i <= mid; i++) { f`8?]@y{
temp = data; M|R\[
Zf
} 3,J{!
for (j = 1; j <= r - mid; j++) { V;gC[7H
temp[r - j + 1] = data[j + mid]; L1&` 3a?pL
} bGK-?BE5+A
int a = temp[l]; ^ Z3y
int b = temp[r]; &PX!'%X68h
for (i = l, j = r, k = l; k <= r; k++) { . HAFKB;
if (a < b) { :_Iz(
2hV
data[k] = temp[i++]; u/xP$
a = temp; 2iC BF-,
} else { T
"#DhEM
data[k] = temp[j--]; C8=r sh
b = temp[j]; /l8wb~vl
} l~[
K.p&
} 9t8ccr
} A,c_ME+DVB
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/** ~*`wRiUhis
* @param data O{Q+<fBC9
* @param l VBW][f
* @param i -b34Wz(
*/ !j3Xzn9
private void insertSort(int[] data, int start, int len) { R_2#7Xs
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {c7@`AV]
} M XuHA?
} .=) *Qx+
}
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} }%<cFi &
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堆排序: D;OPsNQ
{mLv?"M]
package org.rut.util.algorithm.support; N:EljzvP}
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import org.rut.util.algorithm.SortUtil; fc4jbPp:M
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/** Iz&d
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* @author treeroot ?"kU+tCxg
* @since 2006-2-2 =@nW;PUZ
* @version 1.0 G0Z$p6z
*/ s !II}'Je
public class HeapSort implements SortUtil.Sort{ ]qx!51S
^;$9>yi1
/* (non-Javadoc) v7v>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q?8#D
*/ [q^pMH#U"
public void sort(int[] data) { rEWuWv$
MaxHeap h=new MaxHeap(); "$q"Kilj%
h.init(data); ob/HO(h3
for(int i=0;i h.remove(); oWggh3eXk
System.arraycopy(h.queue,1,data,0,data.length); dvglh?7d
} !:~C/B{
'1zC|:,
private static class MaxHeap{ }:*?w>=
Xd.y or
void init(int[] data){ COd~H
this.queue=new int[data.length+1]; wkp$/IZKMj
for(int i=0;i queue[++size]=data; Np;tpq~
fixUp(size); (e9hp2m
} Y 2^y73&k
} 7w\!3pv
mXu";?2
private int size=0; J3'0^JP*
@JOsG-VW~
private int[] queue; ANR611-a
5U*${
public int get() { S)"vyGv
return queue[1]; i,L"%q)C
} L l,nt
l a_
public void remove() { L>N)[;|
SortUtil.swap(queue,1,size--); R5 EC/@
fixDown(1); v4\
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} Ey_mK\'
file://fixdown WK.,q>#
private void fixDown(int k) { buHUBn[3)
int j; !H @nAz
while ((j = k << 1) <= size) { UaHN*@
if (j < size %26amp;%26amp; queue[j] j++; fUJe{C<H
if (queue[k]>queue[j]) file://不用交换 5!6}g<z&L
break; Mi`t$hmP
SortUtil.swap(queue,j,k); _HAr0R8BY
k = j; ke'OT>8
} }-vP~I
} wD@ wOC
private void fixUp(int k) { $:?=A5ttuo
while (k > 1) { %F<3_#Y
int j = k >> 1; t'C9;
if (queue[j]>queue[k]) N9z!-y'X
break;
K81&BVx/
SortUtil.swap(queue,j,k); =g=Vv"B_
k = j; 1+-F3ROP
} l%`~aVGJ
} sZokiFJ
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} b+BX >$
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} 1i Q(q\%
5zt5]zl'
SortUtil: l_2YPon
"||G`%aO+t
package org.rut.util.algorithm; Z3iX^
;;LiZlf
import org.rut.util.algorithm.support.BubbleSort; aQ)g7C
import org.rut.util.algorithm.support.HeapSort; ~>}7+p
?;
import org.rut.util.algorithm.support.ImprovedMergeSort; Ll^9,G"Tt
import org.rut.util.algorithm.support.ImprovedQuickSort; <a2Kc '
import org.rut.util.algorithm.support.InsertSort; PU\@^)$
import org.rut.util.algorithm.support.MergeSort; Ki3wqY
import org.rut.util.algorithm.support.QuickSort; 92*Y( >
import org.rut.util.algorithm.support.SelectionSort; <%oT}K\;
import org.rut.util.algorithm.support.ShellSort; TJs@V>,
2f9%HX(5
/** &oDu$%dkT
* @author treeroot %'dsb7n
* @since 2006-2-2 q,j` _
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* @version 1.0 4_\]zhS
*/ vpk~,D07yR
public class SortUtil { 1{wOjq(4
public final static int INSERT = 1; bvo
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public final static int BUBBLE = 2; cp+eh
public final static int SELECTION = 3; @'S !G"\
public final static int SHELL = 4; }$s._)a
public final static int QUICK = 5; 9K{0x7~
public final static int IMPROVED_QUICK = 6; 23`pog{n
public final static int MERGE = 7; yy\d<-X~
public final static int IMPROVED_MERGE = 8; w"j [c#vM
public final static int HEAP = 9; dJZ
9mP!d
e1K{*h
public static void sort(int[] data) { bJ6v5YA%
sort(data, IMPROVED_QUICK); GZ"J6/0-|
} }5ONDg(I~
private static String[] name={ \Eyy^pb
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !q*]_1
}; =/HTe&
C#.d
sl
private static Sort[] impl=new Sort[]{ B4 # gT
new InsertSort(), Yc
V*3`
new BubbleSort(), 6j~'>w(F
new SelectionSort(), H3o Um1
new ShellSort(), rW9ULS2d
new QuickSort(), h}P""
new ImprovedQuickSort(), bC]GL$ph9*
new MergeSort(), FDRpK5cw
new ImprovedMergeSort(), f.u[!T
new HeapSort() I*8_5?)g<
}; a~[]Ye@H
26c1Yl,DMn
public static String toString(int algorithm){ C8
2lT_7"
return name[algorithm-1]; [Uu!:SZ
} e@{8G^o>D
n!\&X9%[8
public static void sort(int[] data, int algorithm) { ZD]5"oHY
impl[algorithm-1].sort(data); )Y,>cg:z~
} |Ok1E
uY=}w"Db
public static interface Sort { 7~ok*yG w
public void sort(int[] data); `=~d^wKYJ3
} \9dC z;
9#niMv9
public static void swap(int[] data, int i, int j) { }!RFX)T
int temp = data; ,LJX
data = data[j]; _p=O*$b.
data[j] = temp; K)t+lJ
} }))JzrqAe
} To19=,: