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。 0-9.u`)#yu
插入排序: i$Sq.NU
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package org.rut.util.algorithm.support; w_ sA8B
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import org.rut.util.algorithm.SortUtil; #ErIot
/** 5cza0CriJ
* @author treeroot =:;KYuTr
* @since 2006-2-2 xn)eb#r
* @version 1.0 d'yA"b]
*/ $)fybnY
public class InsertSort implements SortUtil.Sort{ ~il{6Z+#n
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/* (non-Javadoc) ?(!<m'jEy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5r$X
*/ +z2+z
public void sort(int[] data) { .PhH|jrCW^
int temp; q:9#Vcw
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ERE1XOe=D
} [v!TQwMU
} u
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} i(k]}Di:
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} {MaFv
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冒泡排序: $j\UD8Hj'-
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package org.rut.util.algorithm.support; (Wm4JmX%
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import org.rut.util.algorithm.SortUtil; {D( _"
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/** P=j89-e
* @author treeroot :gNTQZR
* @since 2006-2-2 {Va"o~io
* @version 1.0 b(Ev :
*/ 3/w) mY-o
public class BubbleSort implements SortUtil.Sort{ RNJUA^{
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/* (non-Javadoc) 1{.=T&eG#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mu1Lg s$;
*/ 8>}^W
public void sort(int[] data) { +foyPj!%
int temp; P
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for(int i=0;i for(int j=data.length-1;j>i;j--){ _(q|W3
if(data[j] SortUtil.swap(data,j,j-1); N1LZ XXY{
} ':v@Pr|
} G\?q{
} aFj)s?$4]K
} #jja#PF]7
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} ~$zodrS9
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选择排序: gGiLw5o,
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package org.rut.util.algorithm.support; 9\|n2$H:
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import org.rut.util.algorithm.SortUtil; 2{!^"iW
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/** }- Jw"|^W
* @author treeroot tsFwFB*
* @since 2006-2-2 Ng6(2Wt0e
* @version 1.0 \?bp^BrI
*/ (]Z$mv!
public class SelectionSort implements SortUtil.Sort { "))G|+tz
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/* WrR97]7t
* (non-Javadoc) @+v;B:
* [>'P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s^/<6kwO
*/ y<G@7?
public void sort(int[] data) { rsp?N{e
int temp; 2EeWcTBU}.
for (int i = 0; i < data.length; i++) { QPi]5z?
int lowIndex = i; +M+ht
for (int j = data.length - 1; j > i; j--) { axl!zu*
if (data[j] < data[lowIndex]) { CL^MIcq?
lowIndex = j; By
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} 4s!rrDN
} ~$0Qvyb>
SortUtil.swap(data,i,lowIndex); 0YsC@r47wL
} E47U &xL
} kpM5/=f/@
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} D3LW49
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Shell排序: u/5I;7cb
p",HF%
package org.rut.util.algorithm.support; JNzNK.E!m-
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import org.rut.util.algorithm.SortUtil; 3
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/** EHT5Gf
* @author treeroot ndkV(#wQS
* @since 2006-2-2 <y(uu(c
* @version 1.0 Fejs9'cB
*/ ELp @/c=Wr
public class ShellSort implements SortUtil.Sort{ 2WjQ-mM#
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/* (non-Javadoc) lO-: [@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =o5ZcC
*/ -Bqn^ E
public void sort(int[] data) { ~;Ga65_6_
for(int i=data.length/2;i>2;i/=2){ aDx{Q&
for(int j=0;j insertSort(data,j,i); "YlN_U
} U@<>2
} Ix,`lFbH
insertSort(data,0,1); "}i\"x;s
} 8J:6uO
c|
':71;^zXf
/** iPMI$
* @param data T jO}P\p
* @param j s4 o-*1R*`
* @param i bJD2c\qoc
*/ g?ID}E~<
private void insertSort(int[] data, int start, int inc) { #c V_p
int temp; }bG|(Wp9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); nT0FonK>
} @0q%&v0
} o$4n D#P3
} L Ty[)
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} +Io[o6*
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快速排序: )o'&f"/
qlJP2Ig~
package org.rut.util.algorithm.support; 3F ;+D
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import org.rut.util.algorithm.SortUtil; U:eahK
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/** d18%zY>
* @author treeroot F/[vg
* @since 2006-2-2 %|[+\py$Q
* @version 1.0 7WG"_A~V
*/ Zqke8q
public class QuickSort implements SortUtil.Sort{ :qi"I;=6
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/* (non-Javadoc) IZczHHEL`b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z
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*/ $u`y
public void sort(int[] data) { ~Rx[~a
quickSort(data,0,data.length-1); y&NO[
} <qs>c<Vj
private void quickSort(int[] data,int i,int j){ =$UDa`}D
int pivotIndex=(i+j)/2; ajuwP1I
file://swap YLSp$d4y
SortUtil.swap(data,pivotIndex,j); S(jbPQT
\$ L2xd
int k=partition(data,i-1,j,data[j]); >ZKE
SortUtil.swap(data,k,j); yz!j9pJ
if((k-i)>1) quickSort(data,i,k-1); eN@V?G26K
if((j-k)>1) quickSort(data,k+1,j); N<$U:!Z
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} Y!9'Wf/^
/** g4<w6eB
* @param data m M!H}|
* @param i ba^cw}5
* @param j vW`{BWd
* @return ~p{.4n2:
*/
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private int partition(int[] data, int l, int r,int pivot) { <;:M:{RZY
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *upl*zFf0
SortUtil.swap(data,l,r); f{[U->#^
} s4bLL
while(l SortUtil.swap(data,l,r); T_O\L[]p*
return l; |a#4
} QT /TZ:
++-\^'&1
} }zi:nSpON
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改进后的快速排序: =h^cfyj
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package org.rut.util.algorithm.support; ]%m0PU#
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import org.rut.util.algorithm.SortUtil; w
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/** #L.fGTb
* @author treeroot %zQME6WELz
* @since 2006-2-2 MK7S*N1
* @version 1.0 IB:Wh;_x
*/ SLO;c{EFH
public class ImprovedQuickSort implements SortUtil.Sort { k2l(!0o|;
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private static int MAX_STACK_SIZE=4096; ]L4B
private static int THRESHOLD=10; g?!vRid@S
/* (non-Javadoc) 4lH$BIAW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dIe-z7x
*/ O.e^?ysp/
public void sort(int[] data) { YbF}(iM
int[] stack=new int[MAX_STACK_SIZE]; ~sk ;6e)(2
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int top=-1; B\1F
int pivot; _H(m4~M
int pivotIndex,l,r; orCD?vlh
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stack[++top]=0; ncf=S(G+
stack[++top]=data.length-1; )s(J8J[b*L
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while(top>0){ 6,)!\1k
int j=stack[top--]; y%
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int i=stack[top--]; b5_(Fv
8
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pivotIndex=(i+j)/2; g![]R-$
pivot=data[pivotIndex]; AxLnF(eG
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SortUtil.swap(data,pivotIndex,j); {4Cn/}7Ly^
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file://partition &}31q`
l=i-1; RekTWIspT/
r=j; Q^4j
do{ !r$?66q/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z{7lyEzBg
SortUtil.swap(data,l,r); g
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}
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while(l SortUtil.swap(data,l,r); 6T0E'kv
S
SortUtil.swap(data,l,j); >tXn9'S
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if((l-i)>THRESHOLD){ '`$a l7D
stack[++top]=i; n}PK0
stack[++top]=l-1; {C Qo}@.7
} He="S3XON
if((j-l)>THRESHOLD){ '$*d:1
stack[++top]=l+1; 1BUdl=o>S
stack[++top]=j; {ecmOxKP}
} 0{g @j{Lbz
I^sWf3'db
} YG$2ySkDhE
file://new InsertSort().sort(data); Z W`
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insertSort(data); VQV7W
} EL$"MT}p
/** saQA:W;
* @param data |2(z<b&y=
*/ "I?sz)pxG
private void insertSort(int[] data) { 1XQJ#J1/
int temp; ]8KAat~J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xnWCio>M
} Xm&L@2V
} @=q,,t$r
} @54, I
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} XH&Fn+
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归并排序: cGiS[-g
jca7Cx`sm
package org.rut.util.algorithm.support; yHkZInn
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import org.rut.util.algorithm.SortUtil; PI~LbDE
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/** :L<$O7
* @author treeroot i|+ EC_^<
* @since 2006-2-2 8`}(N^=}
* @version 1.0 peqoLeJI
*/ G4->7n N
public class MergeSort implements SortUtil.Sort{ {?m;DYv
l^4[;%*f#l
/* (non-Javadoc) k .? aq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wOQ-sp0q0
*/ 5\1Z"?
public void sort(int[] data) { 9k =-8@G9
int[] temp=new int[data.length]; ;V]EF
mergeSort(data,temp,0,data.length-1); bUbM }
} D ODo
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private void mergeSort(int[] data,int[] temp,int l,int r){ &RP!9{F<
int mid=(l+r)/2; <y1V2Np
if(l==r) return ; LcCb[r
mergeSort(data,temp,l,mid); +cv7]
mergeSort(data,temp,mid+1,r); ;Vc@]6Ck
for(int i=l;i<=r;i++){ 6J0HaL
temp=data; u38FY@U$
} JmdXh/X
int i1=l; ^Cb7R/R3
int i2=mid+1; %0T/>:1[E
for(int cur=l;cur<=r;cur++){ $,"{g<*k;
if(i1==mid+1) 3`_jNPV1
data[cur]=temp[i2++]; bf2R15|t5`
else if(i2>r) xExy?5H7
data[cur]=temp[i1++]; q+2yp&zF
else if(temp[i1] data[cur]=temp[i1++]; NfcY30}:
else 7><n e|%
data[cur]=temp[i2++]; CK[2duf^~
} B;tU+36nM
} Cd)e_&
/=Bz[O
} <y5V],-U
x bF*4;^SI
改进后的归并排序: ;;'b;,/
f%9EZ+OP
package org.rut.util.algorithm.support; 8>a/x ,
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import org.rut.util.algorithm.SortUtil; k+S+: 5
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/** _l]`Og@Y
* @author treeroot <K!5N&vh
* @since 2006-2-2 'Ht$LqG
* @version 1.0 )BNm~sP
*/ ]4SnOSV?S
public class ImprovedMergeSort implements SortUtil.Sort { P{mV
wm0vqY+N$
private static final int THRESHOLD = 10; v<bq1QG
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/* 0z{S@
* (non-Javadoc) n
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* <\Nf6>_qEM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <b"ynoM.A
*/ P;0tI;
public void sort(int[] data) { c.jq?Q k
int[] temp=new int[data.length]; Y'"2s~_
Z
mergeSort(data,temp,0,data.length-1); h-h U=I8
} =MO2M~e!
*)"U5A/v)
private void mergeSort(int[] data, int[] temp, int l, int r) { fEc}c.!5
int i, j, k; Us.yKAHPV
int mid = (l + r) / 2; ;>[).fX>/
if (l == r) g6EdCG.V
return; xG0IA 7
if ((mid - l) >= THRESHOLD) w=\Lw+X
mergeSort(data, temp, l, mid); VA.jt}YGE
else GyJp!
xFB
insertSort(data, l, mid - l + 1); I$0`U;Xd
if ((r - mid) > THRESHOLD) Mh'QD)28c
mergeSort(data, temp, mid + 1, r); I2("p.+R
else T:x5 ,vpM
insertSort(data, mid + 1, r - mid); >1:s.[&
@8C^[fDL
for (i = l; i <= mid; i++) {
At%g^
temp = data; JbzYr]k
} Taxi79cH
for (j = 1; j <= r - mid; j++) { k\_>/)g
temp[r - j + 1] = data[j + mid]; W]5kM~Q@
} 5)V]qV$
int a = temp[l]; XG<J'3
int b = temp[r]; `
_()R`=
for (i = l, j = r, k = l; k <= r; k++) { q:#,b0|bv
if (a < b) { -_'M
*-
data[k] = temp[i++]; pr>Qu:
a = temp; ]+)z}lr8 C
} else { N%6jZmKip
data[k] = temp[j--]; %*OKhrM
b = temp[j]; E*IkI))X0
} Vi`+2%4
} gwQL9
UYx
} lJoMJS;S]}
&J^@TgqL^
/** ^ef:cS$;
* @param data K @"m0
* @param l |tz1'YOB
* @param i },0fPkVsU
*/ ]g3&gw
private void insertSort(int[] data, int start, int len) { {>OuxVl??k
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7M}T^LC
} i\2MphS
} U
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} aW %ulZ
} % Z&[wU~
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堆排序: KXcG;b[7n
7^Uv1ezDR
package org.rut.util.algorithm.support; R+lKQAyC0=
hU5[k/ q
import org.rut.util.algorithm.SortUtil; V'pNo&O=
iKV;>gF,)v
/** .{HU1/!
* @author treeroot -"Lia!Q]M
* @since 2006-2-2 n?@3R#4D3
* @version 1.0 '1ff| c!x9
*/ wQb")3dw
public class HeapSort implements SortUtil.Sort{ 2tCep
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/* (non-Javadoc) gm8L5c
V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s['F?GWg
*/ Po&gr@e.V
public void sort(int[] data) { =r+u!~%@''
MaxHeap h=new MaxHeap(); wED~^[]f
h.init(data); R_uA!MoLs
for(int i=0;i h.remove(); "vH@b_>9|
System.arraycopy(h.queue,1,data,0,data.length);
}CaL:kY8
} #93;V'b]
N_$ X4.7p
private static class MaxHeap{ eL^,-3JA(]
x*i5g`jx
void init(int[] data){ ;W?e@ Lgxk
this.queue=new int[data.length+1]; 2{"Wa|o`
for(int i=0;i queue[++size]=data; 8l>/ZZ.NXi
fixUp(size); LGK0V!W
} [[JwHM8H&
} ^qiTO`lg
!rb)Y;WQt
private int size=0; J\_tigd
(o{QSk\
private int[] queue; vb9G_Pfz
N-3w)23*:
public int get() { h_?D%b~5
return queue[1]; -#3B>VY
} / !jd%,G
Y!i4P#4+q
public void remove() { tAP~
SortUtil.swap(queue,1,size--); QtkyKR
fixDown(1); 8iK>bp
} g[-'0d\1
file://fixdown I6YN&9Y
private void fixDown(int k) { ~c! XQJ
int j; \M="R-&b
while ((j = k << 1) <= size) { t LS5yT/
if (j < size %26amp;%26amp; queue[j] j++; }_3<Q\j
if (queue[k]>queue[j]) file://不用交换 JmWN/mx
break; pb$U~TvzhM
SortUtil.swap(queue,j,k); -78
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k = j; `P)atQ
} B Gh%3"q
} _(<[!c!@0
private void fixUp(int k) { xlqRW"
while (k > 1) { u` `FD
int j = k >> 1; "^zxq5u
if (queue[j]>queue[k]) >\^:xxTf
break; P
et0yH
SortUtil.swap(queue,j,k); _4owxYSDke
k = j; <2diO=
} }c|Xr^
} A"I:cw"KY
V\PGk<VO
} 0>4:(t7h\
$}aLFb
} q,^^c1f
3Q~ng2Wv%
SortUtil: puL1A?Y8UM
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package org.rut.util.algorithm; 0kQAT#
N02N
w(pi
import org.rut.util.algorithm.support.BubbleSort; Q6RBZucv
import org.rut.util.algorithm.support.HeapSort; kE UfQLbn
import org.rut.util.algorithm.support.ImprovedMergeSort; Goz9"yazg
import org.rut.util.algorithm.support.ImprovedQuickSort; ;?yd;GOt)
import org.rut.util.algorithm.support.InsertSort; "[BuQ0(g
import org.rut.util.algorithm.support.MergeSort; Kv{i_%j
import org.rut.util.algorithm.support.QuickSort; w \i#
import org.rut.util.algorithm.support.SelectionSort; Hl?\P6
import org.rut.util.algorithm.support.ShellSort; #8%Lc3n
'?v.O}
/** ^B1Q";#
B^
* @author treeroot +*DXzVC
* @since 2006-2-2 }a'8lwF%I
* @version 1.0 wP+wA}SN
*/ BB|w-W=Kd
public class SortUtil { d;
oaG (e
public final static int INSERT = 1; p(v+j_ak
public final static int BUBBLE = 2; \H*"UgS
public final static int SELECTION = 3; %=]~5a9
public final static int SHELL = 4; Jf|J":S
public final static int QUICK = 5; F[l{pc "C
public final static int IMPROVED_QUICK = 6; SH<Nt[8C
public final static int MERGE = 7; F9]GEBLr
public final static int IMPROVED_MERGE = 8; elJLTG
public final static int HEAP = 9; DKF`uRvGN:
<lB^>Hfu
public static void sort(int[] data) { U5Q `r7
sort(data, IMPROVED_QUICK); 7$\;G82_
} wX<)Fj'
private static String[] name={ hJkIFyQ{j
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IyL2{5
}; ^ bexXYh
rKg5?.
private static Sort[] impl=new Sort[]{ <Ktx*(D
new InsertSort(), k,0JW=Vh>|
new BubbleSort(), cIw)ScY
new SelectionSort(), =Mc*~[D/
new ShellSort(), `CUTb*{`
new QuickSort(), rMH\;\
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new ImprovedQuickSort(), 3*/y<Z'H
new MergeSort(), (m|p|rL
new ImprovedMergeSort(), "/(J*)%{
new HeapSort() Oq|RMl
}; ("}TW-r~
}(hx$G^M
public static String toString(int algorithm){ :;#^h]Q
return name[algorithm-1]; KWLI7fTgj$
} Pn[-{nz
T5=3 jPQ
public static void sort(int[] data, int algorithm) { N*f?A$u/I
impl[algorithm-1].sort(data); {<v?Z_!68
} `&LPqb
l <Tkg9
public static interface Sort { =d!3_IZ
public void sort(int[] data); ^GD"aerNr
} O8wR#(/
V) a<)
public static void swap(int[] data, int i, int j) { :tl*>d~
int temp = data; P bj &l0C
data = data[j]; D2# 3fM6
data[j] = temp; &_x:+{06
} \3"4;fM!i
} }:])1!a