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&J@?Hc>
插入排序: *TdnB'Gd
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package org.rut.util.algorithm.support; j .A6S`
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import org.rut.util.algorithm.SortUtil; 7S^""*Q^
/** c'fSu;1
* @author treeroot dj9?t
* @since 2006-2-2
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* @version 1.0 @1RP/y%
*/ l5t2\Fl
public class InsertSort implements SortUtil.Sort{ f|7u_f
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/* (non-Javadoc) M^madx6`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _GtBP'iN
*/ U yqXMbw@
public void sort(int[] data) { B5am1y{P#
int temp; .V'V:;BE%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A7XnHPIw
} H}0dd"
} u=+q$Q]
} c9Es%@]
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} f^Bc
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冒泡排序: MQ/
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HL{$ ^l#v
package org.rut.util.algorithm.support; r4 dOK] 0
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import org.rut.util.algorithm.SortUtil; &~DTZgY
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/** T6#"8qz<
* @author treeroot 'W. Vr4
* @since 2006-2-2 v6a]1B
* @version 1.0 Jc*XXu)
*/ k)(Biz398E
public class BubbleSort implements SortUtil.Sort{ Y;J *4k]
?:rx1}:F
/* (non-Javadoc) QP I+y8N=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Og:v#r8=
*/ ?>uew^$d[w
public void sort(int[] data) { -#&kYK#Ph
int temp; ,t$,idcT+
for(int i=0;i for(int j=data.length-1;j>i;j--){ bMoAD.}
if(data[j] SortUtil.swap(data,j,j-1); d}I(`%%)
} (zo^Nn9VJ
} b
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} M~T.n)x2
} $A\m>*@
ekSY~z=/u
} :K.4 n
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选择排序: !E\[SjY@J
b%(6EiUA
package org.rut.util.algorithm.support; Zy"=y+e!E;
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import org.rut.util.algorithm.SortUtil; WT3gNNx|
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/** 6iezLG5
* @author treeroot ;-mdi/*g
* @since 2006-2-2 1' w:`/_
* @version 1.0 yWIm&Q:
*/ eOlKbJU
public class SelectionSort implements SortUtil.Sort { |?m` xO
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/* /ONV5IkPy
* (non-Javadoc) >R^@Ww;|q
* _uxPx 21g}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mPZGA\
*/ 3C>qh{z"
public void sort(int[] data) { JHV)ZOO
int temp; >O9sk
for (int i = 0; i < data.length; i++) { &rq{v!=7
int lowIndex = i; ]L_w$ev'
for (int j = data.length - 1; j > i; j--) { pR os{Uq"
if (data[j] < data[lowIndex]) { `|e!Kq?#Q
lowIndex = j; IfdI|ya
} H.
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} h=VqxGC&
SortUtil.swap(data,i,lowIndex); dXvt6kF
} ?^!,vh
} yOXO)u1n
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} K\!#4>yd
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Shell排序: Q%ad q-B
5OLQw(E
package org.rut.util.algorithm.support; $ACx*e%
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import org.rut.util.algorithm.SortUtil; |cbd6e{!
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/** =C7
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* @author treeroot pgc3jP!
* @since 2006-2-2 &K%aw
* @version 1.0 SOh-,c\C
*/ E$\~lcq
public class ShellSort implements SortUtil.Sort{ 8^ep/ b&|
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/* (non-Javadoc) *MM#Z?mP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >=,uau7
*/ F#r#}.B='U
public void sort(int[] data) { X~U >LLr
for(int i=data.length/2;i>2;i/=2){ `x8Bn"
for(int j=0;j insertSort(data,j,i); 8QgA@y"
} xh9qg0d
} %|Qw9sbd
insertSort(data,0,1); Y>6.t"?Q^
} $n=lsDnhQ
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/** GlYly5F
* @param data '?Bg;Z'L %
* @param j \ {|ImCH
* @param i x-m/SI]_N
*/ _2Py\+$
private void insertSort(int[] data, int start, int inc) { OKue" p
int temp; sRRI3y@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dbGgD=}o
} c$M%G)P
} /Bv#) -5
} y.a]r7
5N/Lk>p1u
} I*)VZW
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快速排序: X)Gp7k1w
Ww9;UP'G
package org.rut.util.algorithm.support; j
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import org.rut.util.algorithm.SortUtil; o+?@5zw-&
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/** NP
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* @author treeroot dSK0h(8
* @since 2006-2-2 u=K2Q4
* @version 1.0 ~UMOT!4}3
*/ t8J/\f=
public class QuickSort implements SortUtil.Sort{ RVM&4#E
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/* (non-Javadoc) {[OwMk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1=GI&f2I
*/ kA?_%fi1
public void sort(int[] data) { E%pz9gcSx
quickSort(data,0,data.length-1); H
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} RIy\u>
private void quickSort(int[] data,int i,int j){ r|Zi3+
int pivotIndex=(i+j)/2; 7Ua7A
file://swap CY"i-e"q<Q
SortUtil.swap(data,pivotIndex,j); /'&;Q7!)
pO/%N94s
int k=partition(data,i-1,j,data[j]); a5c'V
SortUtil.swap(data,k,j); nfE@R."A
if((k-i)>1) quickSort(data,i,k-1); _n O.-
if((j-k)>1) quickSort(data,k+1,j); 2<W&\D o@
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} !C&%T]
/**
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* @param data vgG}d8MW37
* @param i KFhG (
* @param j 8C&x MA^
* @return 9C}qVoNu
*/ {U @3yB
private int partition(int[] data, int l, int r,int pivot) { &"S/Lt
do{ ?l6jG
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aC\4}i<
SortUtil.swap(data,l,r); NB)t7/Us
} F?]N8W
while(l SortUtil.swap(data,l,r); g:~+Pe
return l; TipHV;|e
} %v=!'?VT
#+jUhxq
} zJl_ t0
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改进后的快速排序: McP.9v}H0_
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package org.rut.util.algorithm.support; Lo`F
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import org.rut.util.algorithm.SortUtil; `iYc<N`
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/** {8CWWfHCD
* @author treeroot &=w|vB)(p
* @since 2006-2-2 z^`]7i
* @version 1.0 r_o<SH
*/ f_<Y\
public class ImprovedQuickSort implements SortUtil.Sort { |rPAC![=
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private static int MAX_STACK_SIZE=4096; )U98
private static int THRESHOLD=10; aqL<v94wX
/* (non-Javadoc) YKx 1NC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jt=>-Spj
*/ Bymny>.M
public void sort(int[] data) { WYO\'W
int[] stack=new int[MAX_STACK_SIZE]; OgMI
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int top=-1; w-rOecwFvu
int pivot; [b1hC ~I;
int pivotIndex,l,r; [thboP.?
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stack[++top]=0; $KQ,}I
stack[++top]=data.length-1; Auac>')&Q
#93}E
Y
while(top>0){ 9k`~x1Y)
int j=stack[top--]; K`(#K#n
int i=stack[top--]; ^KH%mSX>
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pivotIndex=(i+j)/2; fValSQc!U
pivot=data[pivotIndex]; $
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SortUtil.swap(data,pivotIndex,j); ,)$Wm-
>d%VDjk .
file://partition Gpu_=9vzv
l=i-1; _Ex?Xk
r=j; ]
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do{ =J3`@9;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); chLeq
SortUtil.swap(data,l,r); Bz:0L1@,4a
} K%2I
while(l SortUtil.swap(data,l,r); NsmVd dj
SortUtil.swap(data,l,j); ,"H?hFQ
<!!nI%NC
if((l-i)>THRESHOLD){ )%#?3X^sI
stack[++top]=i; aL)$b
stack[++top]=l-1; x5vzPh`
} uBRw>"c_*8
if((j-l)>THRESHOLD){ 6Ct0hk4
stack[++top]=l+1; G"Pj6QUva
stack[++top]=j; u}CG>^0C
} %EIUAG
$rB!Ex{@ac
} ?`i|"y#
file://new InsertSort().sort(data); j],&z^O$
insertSort(data); 8MQbLj'H
} *`.LA@bHU
/** yA}nPXrd
* @param data 1ypjyu
*/ jkCHi@
private void insertSort(int[] data) { *1,=qRjL
int temp; )0F^NU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,v_B)a_E
} lk o3]A3
} ULu O0\W
} 4k*qVOBa6R
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} E7LbSZ
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归并排序: jrcc
Rk{$S"8S_
package org.rut.util.algorithm.support; [oJ& J>U'
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import org.rut.util.algorithm.SortUtil; VO|u8Z"
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/** ir+8:./6
* @author treeroot "i(U
* @since 2006-2-2 _Q^y_f
* @version 1.0 W
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*/ 0#]!#1utg
public class MergeSort implements SortUtil.Sort{ 0STk)>3$-
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/* (non-Javadoc) 8xgc[#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !xH,y
*/ {[lx!QF 8&
public void sort(int[] data) { m&ZJqsZIL
int[] temp=new int[data.length]; CQjV!d0j
mergeSort(data,temp,0,data.length-1); Tz2x9b\82
} (I!1sE!?1
9<w=),R`8
private void mergeSort(int[] data,int[] temp,int l,int r){ *.,8,e8Vq
int mid=(l+r)/2; 6T]Q.\5BZ
if(l==r) return ; rr>IKyI'
mergeSort(data,temp,l,mid); nDF&EE
mergeSort(data,temp,mid+1,r); $'y1Po'2
for(int i=l;i<=r;i++){ ID+,[TM`
temp=data; KG-UW
} I,w^?o
int i1=l; p>!1S
int i2=mid+1; do*Wx2:R
for(int cur=l;cur<=r;cur++){ O2$!'!hz
if(i1==mid+1) _3I3AG0e
data[cur]=temp[i2++]; @X|ok*v`
else if(i2>r) <BQ%8}
data[cur]=temp[i1++]; %{Xm5#m
else if(temp[i1] data[cur]=temp[i1++]; Lq%[A*`^
else 65uZLsQ
data[cur]=temp[i2++]; [KD}U-(Wg
} M Ey1~h/
} @H3|u`6V
s~/57S
} ]m RF[b$
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改进后的归并排序: +OKA_b"wB
1RmBtx\<
package org.rut.util.algorithm.support; dPRtN@3
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import org.rut.util.algorithm.SortUtil; ^NcTWbs-T
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/** B>R*
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* @author treeroot 20n%o&kG]8
* @since 2006-2-2 oUCS|
* @version 1.0 sek6+#|=
*/ h!Z Z2[
public class ImprovedMergeSort implements SortUtil.Sort { ER/\ +Z#Z
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private static final int THRESHOLD = 10; KX]-ll
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/* Wn b)*pPP
* (non-Javadoc) <JG Yr 4V
* H+nr5!`kz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z=0iPy,m>
*/ {|G&W^`
public void sort(int[] data) { )x y9X0
int[] temp=new int[data.length]; ?exALv'B
mergeSort(data,temp,0,data.length-1); cPx66Dh&
} K,Lr+
oC5gME"2
private void mergeSort(int[] data, int[] temp, int l, int r) { hU |LFjc
int i, j, k; 7'c8]/qh
int mid = (l + r) / 2; Ty)gPh6O
if (l == r) no eb f
return; 0m
qSA
if ((mid - l) >= THRESHOLD) rHH#@Zx
mergeSort(data, temp, l, mid); ~4l6unCI
else goG]WGVr
insertSort(data, l, mid - l + 1); BASO$?jf4
if ((r - mid) > THRESHOLD) N)`tI0/W
mergeSort(data, temp, mid + 1, r); x*3@,GmZl
else y[TaM9<
insertSort(data, mid + 1, r - mid); FI80vV7
4KN0i
for (i = l; i <= mid; i++) { A;K{ &x
temp = data; ':5U&
} tW'qO:y+
for (j = 1; j <= r - mid; j++) { IO?~b X P
temp[r - j + 1] = data[j + mid]; 9?EY.}~
} LPtx|Sx![
int a = temp[l]; +# m
int b = temp[r]; F[Qs v54
for (i = l, j = r, k = l; k <= r; k++) { C6Um6X9/i
if (a < b) { jJiCF,m
data[k] = temp[i++]; g`y/_
a = temp; b#bO=T$e-
} else { 89 _&X[X
data[k] = temp[j--]; #MmmwPB_
b = temp[j]; J$o[$G_Z
} 1',+&2)oj
} k
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} ":5~L9&G
VKl~oFKXJ
/** HJ2O@e
* @param data h5h-}qBA
* @param l 1"87EP
* @param i _Eet2;9
*/ C`=`Ce~|d
private void insertSort(int[] data, int start, int len) { T1Ln)CS?9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1KfJl S+
} -Hl\j(D7
} pZNlcB[Qn-
} P7M0Ce~iW
} ^v()iF
!
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堆排序: ^/4{\3
?,A8 fR
package org.rut.util.algorithm.support; n=<q3}1Jej
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import org.rut.util.algorithm.SortUtil; @pyA;>U
74</6T]^
/** ^;v.ytO*
* @author treeroot *GY,h$Ul
* @since 2006-2-2 y"{UNM|R
* @version 1.0 ~XN]?5GQf
*/ GcU(:V2o
public class HeapSort implements SortUtil.Sort{ zXA= se0U
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/* (non-Javadoc) k;9#4^4(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O;.d4pO(tC
*/ I+-Rs2wb
public void sort(int[] data) { IrVM|8vT3
MaxHeap h=new MaxHeap(); vwSX$OZ
h.init(data); `pn-fk
for(int i=0;i h.remove(); ixUiXP
System.arraycopy(h.queue,1,data,0,data.length); `K ~>!d_
} mAtG&my)
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private static class MaxHeap{ ]Y/pSwnV
crF9,p
void init(int[] data){ Lt
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this.queue=new int[data.length+1]; 7i%P&oB
for(int i=0;i queue[++size]=data; m''i E
fixUp(size); )Q N=>J
} DXw9@b
} v:!7n
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private int size=0; c'VtRE# z~
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private int[] queue; h_}BmJ h_
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public int get() { YV>VA<c
return queue[1]; ce-m)o/
} !3gpiQH{
|Cxip&e>
public void remove() { +=lcN~U2
SortUtil.swap(queue,1,size--);
Y=#mx3.
fixDown(1); L>K39z~,
} n$Oky-P"
file://fixdown d%"@#bB
private void fixDown(int k) { {yl/T:Bh&
int j; s`7
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while ((j = k << 1) <= size) { F'T=
Alf
if (j < size %26amp;%26amp; queue[j] j++; A1&>L9nUx
if (queue[k]>queue[j]) file://不用交换 7Ohu$5\
break; ~`Gcq"7,!
SortUtil.swap(queue,j,k); 2+hfbFu,1
k = j; J0Rz.=Y
} ps4Wwk(
} B[k+#YYY
private void fixUp(int k) { AF{7<v>/P
while (k > 1) { /m|&nl8"qe
int j = k >> 1; [sh"?
if (queue[j]>queue[k]) I'wk/
break; d}A2I
SortUtil.swap(queue,j,k); vo^9qSX
f
k = j; R2Fh^x
} clU3#8P!=
} kkuQ"^<J
r5$?4t
} /A`zy
QK/+*hr;
} #+5mpDh
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SortUtil: `cTsS
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package org.rut.util.algorithm; Hi 0df3t
3qwYicq,
import org.rut.util.algorithm.support.BubbleSort; @R Yb-d
import org.rut.util.algorithm.support.HeapSort; q?'gwH37
import org.rut.util.algorithm.support.ImprovedMergeSort; 6
Ge vO3
import org.rut.util.algorithm.support.ImprovedQuickSort; s9Q)6=mE
import org.rut.util.algorithm.support.InsertSort; %BP)m(S7
import org.rut.util.algorithm.support.MergeSort; ^zs4tCW %
import org.rut.util.algorithm.support.QuickSort; e"8m+]
import org.rut.util.algorithm.support.SelectionSort; =xQfgj
import org.rut.util.algorithm.support.ShellSort; "/]tFY%Y
\(v_",
/** DWevg;_]$(
* @author treeroot Gxt<kz
* @since 2006-2-2 nfPl#]ef*
* @version 1.0 {UVm0AeUq
*/ JnKbd~
public class SortUtil { GeW$lA I
public final static int INSERT = 1; ^# g;"K0
public final static int BUBBLE = 2; z4%F2Czai&
public final static int SELECTION = 3; |
3/p8
public final static int SHELL = 4; Bv|9{:1%X}
public final static int QUICK = 5; !-}*jm p<
public final static int IMPROVED_QUICK = 6; UK9MWC5g9
public final static int MERGE = 7; o[+|n[aT)3
public final static int IMPROVED_MERGE = 8; V5^b6$R@
public final static int HEAP = 9; OU964vv
R;m0eG`
public static void sort(int[] data) { .Yv.-A=ZIg
sort(data, IMPROVED_QUICK); {~{s =c0
} f0'Wq^^
private static String[] name={ /xbF1@XtL
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sYW)h$p;D
}; 4Xho0lO&
wjGjVTtHs
private static Sort[] impl=new Sort[]{ HC`3AQ12!&
new InsertSort(), ,(Hmk(,
new BubbleSort(), !`Yi{}1_
new SelectionSort(), <("w'd}
new ShellSort(), s7cyo
]
new QuickSort(), K@u."eaD
new ImprovedQuickSort(), wk7_(gT`0
new MergeSort(), h+d;`7Z>
new ImprovedMergeSort(), g.sV$.T2K
new HeapSort() ^XB8A=xi
}; Zkep7L
:[rKSA]@
public static String toString(int algorithm){ #$^i x
return name[algorithm-1]; V# %spW
} 6G})h!
x;]{ 8#-z
public static void sort(int[] data, int algorithm) { .7^-*HT}
impl[algorithm-1].sort(data); 1X}Tp\e
} a9_KQ=&CI
JBJ7k19;
public static interface Sort { ]O `
[v
public void sort(int[] data); g#2X'%&+
} 3jVm[c5%]
)'CEWc%
public static void swap(int[] data, int i, int j) { "$V2 $
int temp = data; -ZON']|<}k
data = data[j]; a~TZ9yg+HL
data[j] = temp; DyTk<L
} ZvKMRW
} /'_ RI