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。 >kd2GZe^_J
插入排序: Ek84yme#
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package org.rut.util.algorithm.support; .n"aQ@!
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import org.rut.util.algorithm.SortUtil; .
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/** sLCL\dWT
* @author treeroot " #JRw
* @since 2006-2-2 #T+%$q [:
* @version 1.0 DBOz<|
*/ .@R{T3=Q
public class InsertSort implements SortUtil.Sort{ $g*|h G/{
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/* (non-Javadoc) ,]>Eg6B,u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nF05p2Mh
*/ gXG1w>
public void sort(int[] data) { IF uz'
int temp; s`&8tP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FFPO?y$
} T*z >A
} O||M
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} a(bgPkPP
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} bA1uh]oB
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冒泡排序: sz_|py?0
55fV\3F|R
package org.rut.util.algorithm.support; C^.:{
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import org.rut.util.algorithm.SortUtil; R}BHRmSQ
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/** TR]~r2z
* @author treeroot 'Exj|Y&
* @since 2006-2-2 Qu!Lc:oM?
* @version 1.0 nKch_Jb
*/ 8LB+}N(8f
public class BubbleSort implements SortUtil.Sort{ /9;)zI
(@mvNlc:
/* (non-Javadoc) kE=}.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^b'|`R+~}
*/ G!@tW`HO
public void sort(int[] data) { R9~%ORI#;
int temp; ?HttqK)
for(int i=0;i for(int j=data.length-1;j>i;j--){ rk{DrbRx
if(data[j] SortUtil.swap(data,j,j-1); <1>\?$)D
} yX?& K}JI
} rE EWCt
} AW1691Q
} /wVrr%SN
jCxw|tmgq
} q@H?ohIH
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选择排序: d0eMDIm3R\
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package org.rut.util.algorithm.support; -ZBk^p
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import org.rut.util.algorithm.SortUtil; s7#w5fe
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/** nxw]B"Eg
* @author treeroot Z25^+)uf*U
* @since 2006-2-2 pS;jrq
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* @version 1.0 1 f).J
*/ Q&rpW:^v
public class SelectionSort implements SortUtil.Sort { 6MqJy6
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/* J[du>1D
* (non-Javadoc) s9?klJg
* H"6Sj-<=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-pdpbHV
*/ y7txIe!<5
public void sort(int[] data) { wz<YflF
int temp; PSNfh7g
for (int i = 0; i < data.length; i++) { G BV]7.
int lowIndex = i; \E5%.KR
for (int j = data.length - 1; j > i; j--) { 7g[T#B'/x,
if (data[j] < data[lowIndex]) { _0<qS{RW
lowIndex = j; !O~EIz
} .A//Q|ot!
} ]^uO3!+
SortUtil.swap(data,i,lowIndex); LSS3(l[,:
} TU&gj1
} 17
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} 8xW_N"P.>
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Shell排序: :$lx]
-y;SR+
package org.rut.util.algorithm.support; -L}crQl.'c
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import org.rut.util.algorithm.SortUtil; Xkk m~sM6
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/** X!Xl
* @author treeroot 2&S*> (
* @since 2006-2-2 n(\5Z&
* @version 1.0 ?kMG!stgp}
*/ iqW
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public class ShellSort implements SortUtil.Sort{ wM8Gz.9,
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/* (non-Javadoc) ~&8ag`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M#c.(QdF
*/ x >hnH{~w
public void sort(int[] data) { ep* (
for(int i=data.length/2;i>2;i/=2){ %}t.+z(S
for(int j=0;j insertSort(data,j,i); dcew`$SJp
} h(*!s`1
} { AdPC?R`
insertSort(data,0,1); :80!-F*\
} GdVq+,Ge
C(qqGK{
/** uU=O 0?'zq
* @param data x<W`2Du
* @param j Y;JV9{j
* @param i <iDqt5)N
*/ R]L|&{
private void insertSort(int[] data, int start, int inc) { `Hld#+R
int temp; ;& ny< gQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M[Lj N
} z-<U5-'
} B/hL
} -*t4(wT|j
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} Uax[Zh[Cg
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快速排序: `],'fT|,S
&>y[5#qOl
package org.rut.util.algorithm.support; \q(DlqTqs
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import org.rut.util.algorithm.SortUtil; {fW(e?8)
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/** /2Q@M>
* @author treeroot Vw0cf;
* @since 2006-2-2 u?6L.^Op
* @version 1.0 J-yj&2
*/ aUUr&yf_L
public class QuickSort implements SortUtil.Sort{ ;dgxeP;mp
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/* (non-Javadoc) g(){wCI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )D?\ru H
*/ /V}>v
public void sort(int[] data) { 'i#m%D`dt
quickSort(data,0,data.length-1); |>(d^<nR^v
} t4>%<'>e
private void quickSort(int[] data,int i,int j){ A82Bn|J
int pivotIndex=(i+j)/2; DA;,)A&=Q
file://swap "5Orj*{
SortUtil.swap(data,pivotIndex,j); y8=p;7DY
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int k=partition(data,i-1,j,data[j]); {YnR]|0&
SortUtil.swap(data,k,j); n%GlOKC
if((k-i)>1) quickSort(data,i,k-1); 0*0]RC5?
if((j-k)>1) quickSort(data,k+1,j); c@H:?s!0R
*;b.x"
} z9OhY]PPF
/** /3`#ldb%}
* @param data FrXFm+8
F
* @param i ~u|k1
* @param j C":i56
* @return m:U.ao6
*/ gw[\7
private int partition(int[] data, int l, int r,int pivot) { aD)XxXwozm
do{ lYEMrr!KQw
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M| r6"~i
SortUtil.swap(data,l,r); 1|/P[!u
} evOyTvc
while(l SortUtil.swap(data,l,r); qOOF]L9r%u
return l; MR:GH.uM:
} mqxgrb7
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} "f/91gIzm'
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改进后的快速排序: ,9jq
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package org.rut.util.algorithm.support; R&Mv|R
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import org.rut.util.algorithm.SortUtil; Z+%Uwj
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/** /'vCO
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* @author treeroot 8/ lv, m#
* @since 2006-2-2 "]*16t%Z%x
* @version 1.0 f`Km ctI
*/ f44b=,Lry5
public class ImprovedQuickSort implements SortUtil.Sort { :6R0=oz
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private static int MAX_STACK_SIZE=4096; {c5%.<O
private static int THRESHOLD=10; m?LnO5Vs
/* (non-Javadoc) `@.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 29eg.E
*/ Z(g9rz']0
public void sort(int[] data) { FnkB
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int[] stack=new int[MAX_STACK_SIZE]; 2(SK}<X
-)
int top=-1; =R+z\`2
int pivot; llG^ +*Y8t
int pivotIndex,l,r; +bC-_xGuh
!=%E&e]
stack[++top]=0; wkSIQL
stack[++top]=data.length-1; XP#j9CF#.
7kDX_,i
while(top>0){ dV+%x"[:
int j=stack[top--]; Cm)_xnv
int i=stack[top--]; fa#xEWaFr
b(@[Y(_R
pivotIndex=(i+j)/2; F!v`._]
pivot=data[pivotIndex]; oq00)I1
"$)Nd+ny
SortUtil.swap(data,pivotIndex,j); y k=o
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file://partition :5kgJu
l=i-1; &E98&[`7
r=j; L0ZgxG3:g
do{ QP+zGXd}(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9G)Sjn`AQ
SortUtil.swap(data,l,r); QiDf,$t|,
} WSA;p=_
while(l SortUtil.swap(data,l,r); ~`J/618
SortUtil.swap(data,l,j); SCbN(OBN!
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if((l-i)>THRESHOLD){ MF+J3)
stack[++top]=i; WH`E=p^x4
stack[++top]=l-1; ym*,X@Qg^
} (#zSVtZ
if((j-l)>THRESHOLD){ Rx';P/F0C
stack[++top]=l+1; b-sbR R
stack[++top]=j; n<Vq@=9AE
} 1<Vc[p&
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} ^a9v5hu
file://new InsertSort().sort(data); ["FC
insertSort(data); 53y,eLf
} \W^Mo>l
/** h@nNm30i
* @param data w h4WII
*/ 5_4Y/2_|
private void insertSort(int[] data) { ^Y mq<*X
int temp; hD OEJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {/f\lS.5g
} lZyxJDZ A
} t- Rp_2t
} UclQo~3
y\}39Z(]
} UzLe#3MU
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归并排序: :Ja]Vt
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package org.rut.util.algorithm.support; M>Yge~3
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import org.rut.util.algorithm.SortUtil; D9OI",h
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/** `1I@tz|
* @author treeroot &[]0yNG
* @since 2006-2-2 Q/e$Ttt4J
* @version 1.0 ts2;?`~
*/ &r0b~RwUv
public class MergeSort implements SortUtil.Sort{ P\"|b\O1
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/* (non-Javadoc) WU}?8\?U%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Qa6mt2h
*/ ^QX3p,Y
public void sort(int[] data) { WM8
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int[] temp=new int[data.length]; _)4YxmK%
mergeSort(data,temp,0,data.length-1); t?[|oz:v
} [Tha
j
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private void mergeSort(int[] data,int[] temp,int l,int r){ 99T_y`df
int mid=(l+r)/2; WdXi
if(l==r) return ; C %l!"s^
mergeSort(data,temp,l,mid); KH4
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mergeSort(data,temp,mid+1,r); PA5_
for(int i=l;i<=r;i++){ O0?.$f9 s
temp=data; 9Q
4m9}
} \/8 I6a=
int i1=l; D;@*
int i2=mid+1; eQBR*@x
for(int cur=l;cur<=r;cur++){ I+ZK \?Rs
if(i1==mid+1) XY(3!>/eQ[
data[cur]=temp[i2++]; 5w:
else if(i2>r) -Fcg}\9
data[cur]=temp[i1++]; :*GLLjS;
else if(temp[i1] data[cur]=temp[i1++]; !P*1^8b`f
else E;l|I
A/7
data[cur]=temp[i2++]; &<</[h/B/F
} ~T<yp
} EC6)g;CO
kj(Ko{
} ,3^gB,ka
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改进后的归并排序: _c}@Fi+E
R-Y |;
package org.rut.util.algorithm.support; *&VH!K#@{
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import org.rut.util.algorithm.SortUtil; chjXsq#Q^
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/** &Nx'Nq9y
* @author treeroot uus}NZ:*l
* @since 2006-2-2 E}U[VtaC
* @version 1.0 /I2RU2|B
*/ ~.4-\M6[
public class ImprovedMergeSort implements SortUtil.Sort { TV$Pl[m
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private static final int THRESHOLD = 10; ,Y~{RgG
np|3 os
/* 5@3[t`n'
* (non-Javadoc) #BQ7rF7CNE
* +dWx?$n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K\5'pp1
*/ S4RvWTtQV
public void sort(int[] data) { m&)5QX
int[] temp=new int[data.length]; F.P4c:GD
mergeSort(data,temp,0,data.length-1); !;'.mMO&%
} _is<.&f6
M{Ss?G4H
private void mergeSort(int[] data, int[] temp, int l, int r) { N>z<v\`
int i, j, k; >*ey 7g
int mid = (l + r) / 2; #E`-b9Q
if (l == r) O[O`4de9
return; 9W$d'IA
if ((mid - l) >= THRESHOLD) +QNFu){G
mergeSort(data, temp, l, mid); D3#/*Ky
else %JBFG.+
insertSort(data, l, mid - l + 1); %GUu{n<6
if ((r - mid) > THRESHOLD) [t55Kz*cD
mergeSort(data, temp, mid + 1, r); 5ru&In&
else C2GF
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insertSort(data, mid + 1, r - mid); :O:Rfmr~
/s.O3x._'
for (i = l; i <= mid; i++) { 4^1B'>I
temp = data; FY%v \`@1*
} i3I'n*
for (j = 1; j <= r - mid; j++) { XGE:ZVpW
temp[r - j + 1] = data[j + mid]; g0 ec-
} @NMFurm
int a = temp[l]; p"4i(CWGS
int b = temp[r]; ^p#f B4z
for (i = l, j = r, k = l; k <= r; k++) { fI"q/+
if (a < b) { sY__ak!>
data[k] = temp[i++]; ~2xC.DF_N
a = temp; Pf
s _s6
} else { xao'L
data[k] = temp[j--]; k8^!5n
b = temp[j]; a' "4:(L
} .5+*,+-
} 8U!;
} t59"[kQ
iq$edq[
/** [Af&K22M(X
* @param data 1aKYxjYM
* @param l Z&W|O>QTl
* @param i T^h;T{H2
*/ )'8DK$.
private void insertSort(int[] data, int start, int len) { TQm x$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d=%:rLm$
} ")|3ZB7>*
} ;\7TQ9z
} 6'y+Ev$9
} }49X
N
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堆排序: 6zs&DOB
%+oWW5q7
package org.rut.util.algorithm.support; )@.bkzW
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import org.rut.util.algorithm.SortUtil; 4?XX_=+F|
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/** w)-@?jN
* @author treeroot (g,lDU[=
* @since 2006-2-2 q+XL,E
* @version 1.0 BQVpp,]
*/ Mw!?2G[|
public class HeapSort implements SortUtil.Sort{ .#R\t 7m%
EqzS={Olj
/* (non-Javadoc) a5WVDh,cR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vTN/ho,H
*/ $|.x !sA
public void sort(int[] data) { j"o`K}C
MaxHeap h=new MaxHeap(); J 2%^%5&0
h.init(data); |M|'S~z
for(int i=0;i h.remove(); !!&H'XEJV
System.arraycopy(h.queue,1,data,0,data.length); {\22C `9t
} 9
O| "Ws>{
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private static class MaxHeap{ h.c<A{[I6c
r(pp =
void init(int[] data){ KL]K< A
this.queue=new int[data.length+1]; \&]M \
for(int i=0;i queue[++size]=data; Db\.D/76
fixUp(size); NL&(/72V
} uyP)5,
} /6}4<~~4TA
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private int size=0; GutH}Kz"&
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private int[] queue; 2|F.J G^
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public int get() { M= !Fb
return queue[1]; Mt)~:V+:
} 8'J>@ uW
<4}zl'.
public void remove() { q /EK]B
SortUtil.swap(queue,1,size--); k: PO"<-U
fixDown(1); `),7*gn*)
} N;tUrdgQ
file://fixdown h4H~;Wl0
private void fixDown(int k) { d{&+xl^ll
int j; PCnE-$QH
while ((j = k << 1) <= size) { K^t M$l\
if (j < size %26amp;%26amp; queue[j] j++; Py\xN
if (queue[k]>queue[j]) file://不用交换 $K^"a
break; Z@&_ T3M
SortUtil.swap(queue,j,k); pI7\]e
k = j; e8gJ }8Fj
} @& #df
} {U(-cdU{e`
private void fixUp(int k) { r=4'6!
while (k > 1) { t/WauY2JUC
int j = k >> 1; Y2vzK;
if (queue[j]>queue[k]) 4]nU%`Z1w
break; XyJ*>;q
SortUtil.swap(queue,j,k); G_zJuE$V
k = j; kHd_q.
} ,eOOV@3C
} >i~W$;t
`,H\j?
} sLK J<=0i
NuI9"I/
} uSbOGhP
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SortUtil: EiWy`H;
&0SGAJlec
package org.rut.util.algorithm; UTKS<.q
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import org.rut.util.algorithm.support.BubbleSort; S6,AY(V
import org.rut.util.algorithm.support.HeapSort; 0F=UZf&
import org.rut.util.algorithm.support.ImprovedMergeSort; jV8mn{<
import org.rut.util.algorithm.support.ImprovedQuickSort; Q6Y1Jr">X
import org.rut.util.algorithm.support.InsertSort; ZgF-.(GV
import org.rut.util.algorithm.support.MergeSort; _1hc^j
import org.rut.util.algorithm.support.QuickSort; 9>u2;
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import org.rut.util.algorithm.support.SelectionSort; tY !fO>Fn~
import org.rut.util.algorithm.support.ShellSort; ~1wAk0G`n
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/** Htl6Mr*{
* @author treeroot ^DXERt&3
* @since 2006-2-2 }$#e&&)n
* @version 1.0 7!w@u6Q
*/ J}EQ_FC"$
public class SortUtil { {,.1KtrSN
public final static int INSERT = 1; -"u}lCz>
public final static int BUBBLE = 2; fL
ng[&
public final static int SELECTION = 3; N72z5[..
public final static int SHELL = 4; LSlaz
public final static int QUICK = 5; x,IU]YW@
public final static int IMPROVED_QUICK = 6; #rMMOu9r2
public final static int MERGE = 7; 6@g2v^ %
public final static int IMPROVED_MERGE = 8; %d($\R-*O
public final static int HEAP = 9; pez*kU+9
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public static void sort(int[] data) { ]Gow
sort(data, IMPROVED_QUICK); *$/7;CLq
} yw"FI!M
private static String[] name={ >WE3$Q>bi
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y/mxdPw
};
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_X;^'mqf~
private static Sort[] impl=new Sort[]{ LdI)
new InsertSort(), iq,qf)BY.|
new BubbleSort(), LdR}v%EH
new SelectionSort(), *ntq;]
new ShellSort(), 4Cke(G
new QuickSort(), ?VEJk,/k
new ImprovedQuickSort(), iI+kZI-
new MergeSort(), $5yS`IqS
new ImprovedMergeSort(), dG.s8r*?M
new HeapSort() b')CGqbbmT
}; ySP1WK
uljd)kLy4O
public static String toString(int algorithm){ Gv>,Ad
ka
return name[algorithm-1]; dr^pzM!N
} dm,7OQ
,$Qa]UN5Q
public static void sort(int[] data, int algorithm) { QXishHk&
impl[algorithm-1].sort(data); v3Tr6[9
} f3lFpS
.
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public static interface Sort { ]
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public void sort(int[] data); ?'CIt5n+\{
} X3(:)zUL
()JM161
public static void swap(int[] data, int i, int j) { DF%\1C>
int temp = data; k6ERGQ9|I
data = data[j]; Z/sB72K1
data[j] = temp; P[ n`X
} hEsCOcEG
} YZ:YYcr