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。 )XGz#C_P
插入排序: P.5l9Ns(O
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package org.rut.util.algorithm.support; # =tw
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import org.rut.util.algorithm.SortUtil; O,|NOz
/** S2;^
* @author treeroot '?mF,Co{
* @since 2006-2-2 rhy-o?
* @version 1.0 } `r.fD
*/ U1X"UN)
public class InsertSort implements SortUtil.Sort{ ^/#G,MxNy
-{k8^o7$
/* (non-Javadoc) 83SK<V6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IQ~qiFCf
*/ }8#Ed;%K
public void sort(int[] data) { bT&{8a
int temp; u~j
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R:YVmqd
} FZ?eX`,
} !C05;x8{
} Zfcf?&><
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} Z#-N$%^F
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冒泡排序: MO0NNVVi%U
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package org.rut.util.algorithm.support; 77yYdil^W+
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import org.rut.util.algorithm.SortUtil; bTmhz
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/** ThgJ
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* @author treeroot G^#>HE|
* @since 2006-2-2 ?z#*eoPr
* @version 1.0 ;"x+V gS'
*/ E
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public class BubbleSort implements SortUtil.Sort{ qbfX(`nS
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/* (non-Javadoc) (C#0
ML
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >MN"87U6
*/ ?%UiW7}j';
public void sort(int[] data) { JJ
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int temp; e4SS'0|
for(int i=0;i for(int j=data.length-1;j>i;j--){ xxvt<J
if(data[j] SortUtil.swap(data,j,j-1); k[ z yR
} o]Ne|PEpO
} ]!"w?-h Si
} rFpYlMct
} @4T
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} ,++HiYOG}e
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选择排序: g^(gT
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package org.rut.util.algorithm.support; ]"uG04"Vk
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import org.rut.util.algorithm.SortUtil; X+N5iT
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/** eG!ma` v
* @author treeroot ^AaE$G&:
* @since 2006-2-2 *)-@'{]u B
* @version 1.0 Ovk=s,a)K
*/ BLt58LYGX
public class SelectionSort implements SortUtil.Sort { &d2L9kTk
}bca-|N
/* $Y_S`#c@i
* (non-Javadoc) b)Da6fp
* 7uL.=th'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U|tacO5w`
*/ Od~uYOL/B
public void sort(int[] data) { lWj*tnnn[
int temp; 7)jN:+4N
for (int i = 0; i < data.length; i++) { uK$ Xqo%L
int lowIndex = i; ~SBb2*ID
for (int j = data.length - 1; j > i; j--) { u1 M8nb
if (data[j] < data[lowIndex]) {
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lowIndex = j; (~N?kh:
} S,6/X.QBv
} #J&3Zds
SortUtil.swap(data,i,lowIndex); 5tpC$4m
} AZc=Bbh
} By8SRWs
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} #0b:5.vy
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Shell排序: sED"}F)
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package org.rut.util.algorithm.support; c86KDEF
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import org.rut.util.algorithm.SortUtil; !' ^l}K>
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/** p4f9v:b[
* @author treeroot 7Qd$@ m
* @since 2006-2-2 xH:L6K/c
* @version 1.0 oio{@#DX`
*/ iko>G
public class ShellSort implements SortUtil.Sort{ Ut\:jV=f
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/* (non-Javadoc) [?I<$f"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "[?DS
*/ AJEbiP
public void sort(int[] data) { iZy>V$Aq
for(int i=data.length/2;i>2;i/=2){ dB6,pY(
for(int j=0;j insertSort(data,j,i); "ymR8y'
} 5s3QN{h8
} yPtE5"(o
insertSort(data,0,1); >4luZnWMI
} XN Uw
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/** -fFtHw:kHh
* @param data =hvPq@C%
* @param j A_S7z*T
* @param i gjG SI'M0B
*/ 07:V[@'
private void insertSort(int[] data, int start, int inc) { ~M^[
int temp; L5x;#\#p
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); WyatHC
} E8r6P:5d`
} N
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} *Igb3xK%
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} OJa(Gds
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快速排序: Pz0MafF|T
2kVZlt'y
package org.rut.util.algorithm.support; P'tXG
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import org.rut.util.algorithm.SortUtil; UU>+ b:
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/** xA7~"q&u
* @author treeroot tcXXo&ZS
* @since 2006-2-2 MF< ZB_@
* @version 1.0 ]?1_.Wjtt
*/ (J5}1Q<K
public class QuickSort implements SortUtil.Sort{ ,3_Sf?
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/* (non-Javadoc) fV>d_6Lf}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YT+b{
*/ a_P|KRl
public void sort(int[] data) { >"!ScYn
quickSort(data,0,data.length-1); N`efLOMl]
} @!dIa1Q"
private void quickSort(int[] data,int i,int j){ d"Zu10
int pivotIndex=(i+j)/2; 1qNO$M
file://swap *z69ti/
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SortUtil.swap(data,pivotIndex,j); tE=09J%z
pt.V^a
int k=partition(data,i-1,j,data[j]); [nig^8
SortUtil.swap(data,k,j); <(>t"<
if((k-i)>1) quickSort(data,i,k-1); 9.\SeJ8c
if((j-k)>1) quickSort(data,k+1,j); VrPsy) J68
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vZ
} /Z?o%/bw:
/** P05`DX}r,
* @param data -V{"Lzrfug
* @param i 7d%x 7!E
* @param j kqih`E9P7B
* @return Skci;4T(
*/ 7\%JJw6h
private int partition(int[] data, int l, int r,int pivot) { 1Mp-)-e
do{ HBe*wk Pd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Sk+XBX(}
SortUtil.swap(data,l,r); [5L?#Y
} 1-E6ACq
while(l SortUtil.swap(data,l,r); i,ZEUdd*_
return l; 2k<#e2
} 7OmT^jV2
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} I{dy,\p
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改进后的快速排序: cX
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; !0?o3,of-
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/** 'u v=D
* @author treeroot d*s*AV
* @since 2006-2-2 ZcjLv
* @version 1.0 oH6zlmqG"
*/ ZT!8h$SE:
public class ImprovedQuickSort implements SortUtil.Sort { (4 ZeyG@
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private static int MAX_STACK_SIZE=4096; AA[1[
private static int THRESHOLD=10; N8Rq7i3F?a
/* (non-Javadoc) *nU5PSs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bT 42G[x
*/ n',X,P0
public void sort(int[] data) { {H[N|\
int[] stack=new int[MAX_STACK_SIZE]; _1E c54D
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int top=-1; (n7xYGfYS
int pivot; ^
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int pivotIndex,l,r; *:TwO=)
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stack[++top]=0; ;]1t|td8
stack[++top]=data.length-1; B,%6sa~I
}nPt[77U_7
while(top>0){ *$%~/Q@]
int j=stack[top--]; +
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int i=stack[top--]; $,by!w'e:l
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pivotIndex=(i+j)/2; Vv+nq_
pivot=data[pivotIndex]; 7<]&pSt=
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SortUtil.swap(data,pivotIndex,j); I"czo9Yspd
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file://partition ho{%7\
l=i-1; neM)(` gp
r=j; =nCA=-Jv
do{ (.!9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H( .9tuA
SortUtil.swap(data,l,r); .TA)|df
^
} 4dFr~ {
while(l SortUtil.swap(data,l,r); 79>x/jZka
SortUtil.swap(data,l,j); .Xp,|T
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if((l-i)>THRESHOLD){ 5PeYQ-B|
stack[++top]=i; TM6wjHFm
stack[++top]=l-1; 3_
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} r~T!$Tb
if((j-l)>THRESHOLD){ LAk
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stack[++top]=l+1; X8Z) W?vu
stack[++top]=j; ]'xci"qV`
} gBV4IQ
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} " J9
file://new InsertSort().sort(data); kum@cA
insertSort(data); f3!Oc
} ."dT6u E
/** OAq-(_H
* @param data 5(CInl
*/ YG0/e#5
private void insertSort(int[] data) { BEb?jRMjLg
int temp; Xxh^4vKjX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Awfd0L;9
} =Ks&m4
} UNb7WN
} Ue Ci{W
JzN "o'
} zu?112-v2
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归并排序: LI}e_=E
)2y [#Blo
package org.rut.util.algorithm.support; <$?#P#A
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import org.rut.util.algorithm.SortUtil; U3Gg:onuE
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/** I_f%%N%
* @author treeroot E!}'cxb^
* @since 2006-2-2 g0biw?
* @version 1.0 o0No"8DnjH
*/ l,Q`;v5|
public class MergeSort implements SortUtil.Sort{ dl=)\mSFjF
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/* (non-Javadoc) +arh/pd_I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~_;.ZZ-H]
*/ YkF LNCg4}
public void sort(int[] data) { AoGpM,W]5
int[] temp=new int[data.length]; _hV34:1F
mergeSort(data,temp,0,data.length-1); _)vX_gCi
} ]vcT2lr]
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^3sv2wh^|8
int mid=(l+r)/2; ?pJ2"/K
if(l==r) return ; D#'CRJh;7
mergeSort(data,temp,l,mid); $9\8?gS
mergeSort(data,temp,mid+1,r); FDuA5At
for(int i=l;i<=r;i++){ ][Tw^r&
temp=data; O2 Y|<m
} oVk!C a
int i1=l; [MAPa
int i2=mid+1; %6lGRq{/?
for(int cur=l;cur<=r;cur++){ uHquJQ4
if(i1==mid+1) ^[[@P(e>
data[cur]=temp[i2++]; -T+YMAFU_
else if(i2>r) bhRa?wuoY
data[cur]=temp[i1++]; :I?lT2+ea
else if(temp[i1] data[cur]=temp[i1++]; *j(fk[,i
else oD2! [&
data[cur]=temp[i2++]; .mrv"k\<
} 1H">Rb30@
} P2ySjgd
vRaxB
} 4
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改进后的归并排序: mgjcA5z
gF9GU5T:
package org.rut.util.algorithm.support; @+~URIG)
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import org.rut.util.algorithm.SortUtil; V
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/** ysp,:)-%G@
* @author treeroot =1>G*
,
* @since 2006-2-2 c9H6\ &
* @version 1.0 (Q `Ps/
*/ x^[0UA]S9
public class ImprovedMergeSort implements SortUtil.Sort { 9BOn8p;yz
p79QEIbk=
private static final int THRESHOLD = 10; (@T{ [\
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/* Ro$*bN6p
* (non-Javadoc) #bGYHN
* #r>)A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2 PPb
*/ C4X3;l Z%S
public void sort(int[] data) { ;X;x.pi
int[] temp=new int[data.length]; Z1W%fT
mergeSort(data,temp,0,data.length-1); VZamR}x
} p{qA%D
8M3DG=D
private void mergeSort(int[] data, int[] temp, int l, int r) { r.LO j6c
int i, j, k; CPsl/.$tC
int mid = (l + r) / 2;
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if (l == r) -*&aE~Cs
return; M4?>x[Pw
if ((mid - l) >= THRESHOLD) Tl_o+jj
mergeSort(data, temp, l, mid); #.]W>hN8\
else x=K'Jj
insertSort(data, l, mid - l + 1); a]V#mF |{
if ((r - mid) > THRESHOLD) `mZ1!I-T
mergeSort(data, temp, mid + 1, r); 5't9/8i
else U\{I09@E 0
insertSort(data, mid + 1, r - mid); [4;_8-[Nv
v8uUv%Hkd
for (i = l; i <= mid; i++) { OPq6)(Q
temp = data; F-~Xbz%
} &% (1?\~u
for (j = 1; j <= r - mid; j++) { WzdlrkD
temp[r - j + 1] = data[j + mid]; Eos;7$u[
}
iH>JR[A
int a = temp[l]; 8PeVHpZ
int b = temp[r]; g-x;a0MQx
for (i = l, j = r, k = l; k <= r; k++) { 8j]QnH0&
if (a < b) { kotKKs
data[k] = temp[i++]; <#Fex'4
a = temp; jtpk5 fJB
} else { ept:<!4
data[k] = temp[j--]; {9@E[bWp#
b = temp[j]; DB jUHirK
} \Ff]}4
} ]=|iO~WN
} `N7erM
&8%^o9sH
/** REX/:sB<
* @param data w3fD6$
* @param l Uq%|v
* @param i "$"<AKCwS
*/ rTC| 8e
private void insertSort(int[] data, int start, int len) { P4MP`A
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6QPbmO]z
} w3>G3=b
} H?ue!5R#L
} (a,`Y.
} Xn!=/<TIVz
&$qIJvMiK
堆排序: ]/R>nT
]YDqmIW
package org.rut.util.algorithm.support; "tK3h3/Xv
La^Zr,T!
import org.rut.util.algorithm.SortUtil; f|!@H><
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/** Jju?v2y`
* @author treeroot 5(\[Gke
* @since 2006-2-2 lm'.G99{
* @version 1.0 ?K.!^G
*/ Gv(n2r
public class HeapSort implements SortUtil.Sort{ <(qdxdUp
e
[F33%
/* (non-Javadoc) p7*7V.>X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ybB<AkYc
*/ wz:w6q
public void sort(int[] data) { _B ]Bd@<w
MaxHeap h=new MaxHeap(); 3
}rx(
h.init(data); #)6
bfyi-
for(int i=0;i h.remove(); 4x/u$Ixzh=
System.arraycopy(h.queue,1,data,0,data.length); `UkjrMO
} &)~LGWBdC
xA}{ZnTbN
private static class MaxHeap{ i079 V
q,'~=Y5
void init(int[] data){ SYOU&*
this.queue=new int[data.length+1]; 8wS9%+
for(int i=0;i queue[++size]=data; }4>#s$.2
fixUp(size);
Z\$!:
} 4T<dI6I0
} |@ZyD$?
jm|zn
private int size=0; Rn whkb&&
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private int[] queue; k#@)gL
%bnjK#o"Q
public int get() { ;u%4K$
return queue[1]; 3'`X_C|d53
} `,wX&@sN
l%xeM!}
public void remove() { klj.\wg/p{
SortUtil.swap(queue,1,size--); Au?(_*/0
fixDown(1); Yr:$)ap
} *-_joAWTG
file://fixdown IG@@CH
private void fixDown(int k) { (b1rd
int j; X`daaG_l
while ((j = k << 1) <= size) { j)O8&[y=
if (j < size %26amp;%26amp; queue[j] j++; ;77q~_g$
if (queue[k]>queue[j]) file://不用交换 A'? W5~F
break; D-5~CK4`
SortUtil.swap(queue,j,k); ~/R}K g(
k = j; nx4E}8!Lh
} t== a(e
} RQ51xTOL4]
private void fixUp(int k) { 'nqVcNgb
while (k > 1) { "}UYsXg
int j = k >> 1; pvd9wKz
if (queue[j]>queue[k]) 7m9T'
break; ngaQa-8w
SortUtil.swap(queue,j,k); ),I7+rY
k = j; AzBpQb*
} c6pGy%T-
} S4X['0rX!
n!XSB7d~X
} d e~3:
:20k6 )
} v{>9&o.J
$S!WW|9j.
SortUtil: #*K!@X
X<$8'/p r
package org.rut.util.algorithm; : ]JsUb{YK
\"@ `Rf
import org.rut.util.algorithm.support.BubbleSort; N6-bUM6%I
import org.rut.util.algorithm.support.HeapSort; GEf[k OQ
import org.rut.util.algorithm.support.ImprovedMergeSort; 04<T2)QgK
import org.rut.util.algorithm.support.ImprovedQuickSort; D61e
import org.rut.util.algorithm.support.InsertSort; }=."X8zOI8
import org.rut.util.algorithm.support.MergeSort; jLf8 7
import org.rut.util.algorithm.support.QuickSort; 15~+Ga4
import org.rut.util.algorithm.support.SelectionSort; r;aP`MVO<
import org.rut.util.algorithm.support.ShellSort; &@xeWB
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/** Sst`*PX:
* @author treeroot l{x?i00tAS
* @since 2006-2-2 m4@w M?
* @version 1.0 d
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*/ ('pxX+
public class SortUtil { pDx}~IB
public final static int INSERT = 1; Kx[z7]1@
public final static int BUBBLE = 2; -[`FNTTV C
public final static int SELECTION = 3; Aonq;} V e
public final static int SHELL = 4; Th//u I+
public final static int QUICK = 5; }tZA7),L
public final static int IMPROVED_QUICK = 6; >pl*2M&
public final static int MERGE = 7; oE4hGt5x{
public final static int IMPROVED_MERGE = 8; 6hm6h7$F1
public final static int HEAP = 9; 7QkAr
,s1n!@9
public static void sort(int[] data) { ui6B
sort(data, IMPROVED_QUICK); r\66]u[
} 0#KB.2AP
private static String[] name={ 8M'6Kcr
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" { e%
}; l+V5dZ8W
"ae55ft//
private static Sort[] impl=new Sort[]{ yo0?QRT
new InsertSort(), _j2h3lCT
new BubbleSort(), !P26$US%P
new SelectionSort(), Iq[,)$
new ShellSort(), $/(H%f&
new QuickSort(), a?!Joi[
new ImprovedQuickSort(), NeyGIEP
new MergeSort(), /`Lki>"
new ImprovedMergeSort(), W\<5'9LNb
new HeapSort() HCifO
}; ,P d2ZfZ
[%8+Fa~Wa
public static String toString(int algorithm){ ]g;K_>@
return name[algorithm-1]; j{'@g[HW
} gB@Wv91
.tb~f@xL
public static void sort(int[] data, int algorithm) { ARu^hz=
impl[algorithm-1].sort(data); 5+O#5"v_
} <cz~q=%v2&
wB(
igPi
public static interface Sort { l9.wMs*`X
public void sort(int[] data); ),6Z1 K1
} c$'UfW
g%<7Px[W
public static void swap(int[] data, int i, int j) { {:enoV"
int temp = data; 6A/|XwfE/v
data = data[j]; K~WwV8c9;
data[j] = temp; Ja#idF[V
} /qL&)24
} qQ6NxhQo