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。 #A|MNJ%m
插入排序: :8rqTBa`
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package org.rut.util.algorithm.support; w ggl,+7
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import org.rut.util.algorithm.SortUtil; U2h?l
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/** LsmC/+7r$1
* @author treeroot 68D.Li
* @since 2006-2-2 uX p0D$a
* @version 1.0 LX3 5Lt
*/ S2Wxf>bt2
public class InsertSort implements SortUtil.Sort{ L-Hl.UV
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/* (non-Javadoc) 5bAy@n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !W6]+
*/ [#.QDe
public void sort(int[] data) { .NPai4V'
int temp; m*(8I=]q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ed617J
} ]v+\v re
} 9iv!+(ni
} :${Lm&J
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} X2EC+<
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冒泡排序: jfI|( P
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package org.rut.util.algorithm.support; zIlQqyOQ8
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import org.rut.util.algorithm.SortUtil; (l$bA_F\
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/** x&7!m
* @author treeroot
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* @since 2006-2-2 (llg!1
* @version 1.0 <8'}H`w%
*/ l.&6|
public class BubbleSort implements SortUtil.Sort{ 0uj3kr?cv
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/* (non-Javadoc) 05w_/l+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p^^<BjkQ
*/ R@ihN?k
public void sort(int[] data) { mH;\z;lyK
int temp; `i<U;?=0'
for(int i=0;i for(int j=data.length-1;j>i;j--){ <Nkj)`%5iK
if(data[j] SortUtil.swap(data,j,j-1); T[c;},
} eO*FoN
} cm-!6'`
} "zYlddh
} %SIbpk%
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} 8?ZK^+]y
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选择排序: >8QLo8)3C
t.3b\RV[
package org.rut.util.algorithm.support; k|&@xEbS
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import org.rut.util.algorithm.SortUtil; tLLP2^_&
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/** l].dOso$`
* @author treeroot QKe=/;
* @since 2006-2-2 HD$W\P
* @version 1.0 {wK98 >$a
*/ rry 33
public class SelectionSort implements SortUtil.Sort { `2}Mz9mk
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/* lNqYpyvy*
* (non-Javadoc) f7\$rx
* MsfY|(/m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&[ x)W
*/ Ij4oH
public void sort(int[] data) { j^>J*gLM}W
int temp; ^Qq_|{vynf
for (int i = 0; i < data.length; i++) { IL&Mf9m
int lowIndex = i; *ewE{$UpK
for (int j = data.length - 1; j > i; j--) { yX/ 9jk
if (data[j] < data[lowIndex]) { m{;2!
lowIndex = j; }5u$/c@f1
} :<!a.%=
} +H8]5~',L%
SortUtil.swap(data,i,lowIndex); 8L^5bJ
} eqg|bc[i!t
} &KT*rL
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} F0qGkMs|f
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Shell排序: [a`89'"z
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package org.rut.util.algorithm.support; 7gNJ}pLDx
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import org.rut.util.algorithm.SortUtil; 1@egAo)
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/** 0p)#!$
* @author treeroot $@s&qi_&R
* @since 2006-2-2 I ze+](
* @version 1.0 +7.\>Ucq`
*/ &iORB
public class ShellSort implements SortUtil.Sort{ wL\OAM6R
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/* (non-Javadoc) Rq|7$O5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >;LXy
*/ !#Ub*qY1Z
public void sort(int[] data) { i]Njn k
for(int i=data.length/2;i>2;i/=2){ scT,yNV
for(int j=0;j insertSort(data,j,i); $qV, z
} V9mqJRFJ:
} (p>?0h9[
insertSort(data,0,1); TgoaEufS<
} ]ri5mnB
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/** N2#Wyt8MC
* @param data 5<^$9('
* @param j C8W#$a
* @param i oc7&iL
*/
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private void insertSort(int[] data, int start, int inc) { H,u {zU')
int temp; ?0*,x)t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &{-r 5d23
} m<}>'DT
} 6#hDj_(,
} `tw[{Wb
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} V"K-aO&
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快速排序: ])`w_y(>
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package org.rut.util.algorithm.support; ]{^'{ z$i
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import org.rut.util.algorithm.SortUtil; lJb1{\|.,
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/** 3Xcjr2]~
* @author treeroot 1cq"H/N
* @since 2006-2-2 `1
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* @version 1.0 Gj!9#on$7R
*/ C.4r`F$p
public class QuickSort implements SortUtil.Sort{ rZ'&'#Q
4}.PQ{
/* (non-Javadoc) /Z^"[Ke
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >8M=REn4
*/ Bie#GKc
public void sort(int[] data) { =>3wI'I
quickSort(data,0,data.length-1); #0kVhx7%
} Is&0h|
private void quickSort(int[] data,int i,int j){ 8z1#Q#5
int pivotIndex=(i+j)/2; WVZ](D8Gc]
file://swap 8L1vtYz
SortUtil.swap(data,pivotIndex,j); r ]s7a?O
3EkCM_]
int k=partition(data,i-1,j,data[j]); +{#65z
SortUtil.swap(data,k,j); OEiu,Y|@l
if((k-i)>1) quickSort(data,i,k-1); >f$NG
if((j-k)>1) quickSort(data,k+1,j); zbY2gq@?
vbBNXy/
} u1 Z;n
/** RW-)({
* @param data 1aAY7Dm_&
* @param i
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* @param j (/gv
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* @return 0Wkk$0h9
*/ tq$L* ++O
private int partition(int[] data, int l, int r,int pivot) { Sy@)Q[A
do{ &u+l`F^Z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =y^`yv 3
SortUtil.swap(data,l,r); 8NnGN(a*D
} zEVQ[y6BcM
while(l SortUtil.swap(data,l,r); $-=xG&fSz
return l; Zh
} yopC
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} *O|_)G
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改进后的快速排序: o;TS69|D
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package org.rut.util.algorithm.support; ~] &yHzp2
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import org.rut.util.algorithm.SortUtil; x{O) n
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/** 38GkV.e}$
* @author treeroot v!`:{)2C
* @since 2006-2-2 N_^PoX935O
* @version 1.0 ?:tk8Kgf
*/ 5rb<u>e{
public class ImprovedQuickSort implements SortUtil.Sort { 5jq @ nq6
|*/-~5"
private static int MAX_STACK_SIZE=4096; 25PZ&^G8%
private static int THRESHOLD=10; R-Ys<;
/* (non-Javadoc) (_%l[:o 6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pwH*&YU
*/ iE EP~
public void sort(int[] data) { `w&?SXFO8
int[] stack=new int[MAX_STACK_SIZE]; 7@&mGUALO
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int top=-1; /a*8z,x
int pivot; ?y-@c]
int pivotIndex,l,r; F
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stack[++top]=0; CcTdLq
stack[++top]=data.length-1; {,!!jeOO
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while(top>0){ d"yJ0F
int j=stack[top--];
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int i=stack[top--]; xw}rFY$
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pivotIndex=(i+j)/2; Im?/#t X
pivot=data[pivotIndex]; Egz6rRCvg
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SortUtil.swap(data,pivotIndex,j); cTW$;Fpc+
7'OR;b$
file://partition :t9sAD
l=i-1; >k
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r=j; &zd@cr1
do{ ^W(ue]j}o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7IFZK\V
SortUtil.swap(data,l,r); Y4w]jIv
} r@zs4N0WP
while(l SortUtil.swap(data,l,r); {\`y)k 7
SortUtil.swap(data,l,j); #eN2{G=4+
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if((l-i)>THRESHOLD){ {0lu>?<
stack[++top]=i; nGwon8&]]
stack[++top]=l-1; }t"K(oamm
} *- ~GVe
if((j-l)>THRESHOLD){ ?hAO-*);
stack[++top]=l+1; ).`v&-cK4E
stack[++top]=j; BW6Ox=sr<
} 3.Yg3&"Z
YD@Z}NE
v"
} e`U
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file://new InsertSort().sort(data); XZ{rKf2
insertSort(data); cHVJ7yAZI
} F+*fim'NK
/** wx`.
* @param data '<vb_8.
*/ [E%g3>/mt
private void insertSort(int[] data) { .I EHjy\+
int temp; ji>LBbnHdE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rW|%eT*/'A
} {chZ&8)f
} ?{}P#sn
} =-~))!(
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} 6]Q#4
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归并排序: <"6\\#}VG
[3qH?2&
package org.rut.util.algorithm.support; (]\p'%A)
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import org.rut.util.algorithm.SortUtil; wdf;LM
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/** N
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* @author treeroot }:YL'$:5!
* @since 2006-2-2 QZG<sZ0"
* @version 1.0 &o7PB`(l
*/ (3$DUvx7
public class MergeSort implements SortUtil.Sort{ ^fe,A=k~1
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/* (non-Javadoc) IY8<^Q']
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i].E1},%
*/ TmftEw>u
public void sort(int[] data) { z;P#
int[] temp=new int[data.length]; F!g1.49""
mergeSort(data,temp,0,data.length-1); rNJU &
.]
} o~e_M-
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private void mergeSort(int[] data,int[] temp,int l,int r){ fMUh\u3
int mid=(l+r)/2; !ht2*8$lQ
if(l==r) return ; Wu<;QY($5
mergeSort(data,temp,l,mid); @k)J
i!7
mergeSort(data,temp,mid+1,r); P7zUf
for(int i=l;i<=r;i++){ 6M`gy|"(~
temp=data; )eT>[['fm
} :j .:t
int i1=l; q2J|koT
int i2=mid+1; C>x)jDb?
for(int cur=l;cur<=r;cur++){ ||*F.p
if(i1==mid+1) J5F@<vi
data[cur]=temp[i2++]; E9>z.vV
else if(i2>r) L fcy#3!
data[cur]=temp[i1++]; B|"/bQ
else if(temp[i1] data[cur]=temp[i1++]; Ipq0
1
+
else *P9" 1K+
data[cur]=temp[i2++]; kvbW^pl
} )=()
}
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} J^CAQfcx
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改进后的归并排序: &y1iLk h ^
Kr'? h'F
package org.rut.util.algorithm.support; L~)8Q(f
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import org.rut.util.algorithm.SortUtil; Rc{R^5B
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/** u&c%L0)E&
* @author treeroot ?Y
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* @since 2006-2-2 ,g}$u'A+d
* @version 1.0 [jlum>K
*/ e(a,nZF.
public class ImprovedMergeSort implements SortUtil.Sort {
Hcg7u7M{
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private static final int THRESHOLD = 10; E9I08AODS
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/* n{MTh_C4n
* (non-Javadoc) '" %0UflJS
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HBvyX`-
*/ d9U)O6=
public void sort(int[] data) { ezL1,GT
int[] temp=new int[data.length]; Mb[4_Dc
mergeSort(data,temp,0,data.length-1); @$^4Av-
} Z]G#:
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private void mergeSort(int[] data, int[] temp, int l, int r) { `Rfe*oAf
int i, j, k; 5NN;Fw+
int mid = (l + r) / 2; (!5Pl`:j"
if (l == r) \/j,
return; s+fxv(,"c
if ((mid - l) >= THRESHOLD) <yEApWd;
mergeSort(data, temp, l, mid); Or?c21un
else )V>OND
insertSort(data, l, mid - l + 1); |hi,]D^Kc
if ((r - mid) > THRESHOLD) fVY I
mergeSort(data, temp, mid + 1, r); G8__6v~
else SE' |||B
insertSort(data, mid + 1, r - mid); o[ks-C>jw
#o}/'
for (i = l; i <= mid; i++) { WvJ:yUb2
temp = data; b:~#;$g
} .'H$|"(v
for (j = 1; j <= r - mid; j++) { T }msF
temp[r - j + 1] = data[j + mid]; N2}Y8aR~
} ;qUB[Kw
int a = temp[l]; ;T0X7MNx
int b = temp[r]; ^&mrY[;S
for (i = l, j = r, k = l; k <= r; k++) { |y0k}ed
if (a < b) { B=n90XO |
data[k] = temp[i++]; z\UXnRL
a = temp; p6BDhT(RS
} else { |:#Ug
data[k] = temp[j--]; GXD<X_[
b = temp[j]; sUc[!S:/
} \}.bTca
} W$,/hB& z
} %>9L}OAm
\ILNx^$EL
/** GT]>
* @param data oxeu%wj_
* @param l AhA&=l
i;
* @param i +HUy,@^Pa
*/ 6la'\l#
private void insertSort(int[] data, int start, int len) { V3cKdlu Na
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DBaZ cO(U
} y>E:]#F
} @73kry v
} `kvIw,c.
} {Y2J: x
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堆排序: mejNa(D ^
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package org.rut.util.algorithm.support; WFk%nO/
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import org.rut.util.algorithm.SortUtil; &{<hY|%
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/** :
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* @author treeroot L?|}!
* @since 2006-2-2 U<sGj~"#
* @version 1.0 1fIx@
*/ O9?.J,,mVh
public class HeapSort implements SortUtil.Sort{ )hQ]>o@i{
#*y.C[^5{
/* (non-Javadoc) 7 qn=W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z]DZ:dF
*/ S~fP$L5
public void sort(int[] data) {
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MaxHeap h=new MaxHeap(); ZD|F"v.
h.init(data); H$WD7/?j
for(int i=0;i h.remove(); 0n2H7}Uq
System.arraycopy(h.queue,1,data,0,data.length); Gukvd6-g9b
} Srmr`[i
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private static class MaxHeap{ L'KKU4zj
*!
:j$n;
void init(int[] data){
jwLZC
this.queue=new int[data.length+1]; d(RMD
for(int i=0;i queue[++size]=data; f2o6GC_
fixUp(size); Y7qQ`|
} lo6upirZX
} K2n#;fY %
DQ/rx`BG
private int size=0; u$5.GmKm
8Ara^Xh}q
private int[] queue; pYAKA1F
}m^^6h
public int get() { $?z}yx$
return queue[1]; +'93%/:
} YG=:lf
ZWS:-]P.
public void remove() { -
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SortUtil.swap(queue,1,size--); 4B[pQlg
fixDown(1); (
[a$Z2m
} A ep](je
file://fixdown AsuugcN*
private void fixDown(int k) { z(.,BB[
int j; ^["D>@yIR
while ((j = k << 1) <= size) { s.;'-oA
if (j < size %26amp;%26amp; queue[j] j++; kxEq_FX
if (queue[k]>queue[j]) file://不用交换 wX6-WQR
break; [Rq|;p
SortUtil.swap(queue,j,k); II _CT=
k = j; XA>uCJf
} rB]2qk`/'
} ~rjK*_3/
private void fixUp(int k) { Yuf+d-%
while (k > 1) { E'mT%@MOM
int j = k >> 1; }Ptv[{q]GE
if (queue[j]>queue[k]) tzgaHN
break; %rlqq*
SortUtil.swap(queue,j,k); SQU@JKi;g
k = j; ARnq~E@1
} ^jS1g*nrN
} u^^jt(j
`.pd %\
} A-L)2.M
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} lsj9^z7
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SortUtil: FxK!h.C.
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package org.rut.util.algorithm; b W/T}FND
go6;_
import org.rut.util.algorithm.support.BubbleSort; <Tbl|9
import org.rut.util.algorithm.support.HeapSort; !h}Vz
import org.rut.util.algorithm.support.ImprovedMergeSort; ~Hg*vCd ?
import org.rut.util.algorithm.support.ImprovedQuickSort; ir\)Hz2P
import org.rut.util.algorithm.support.InsertSort; T:K}mLSg
import org.rut.util.algorithm.support.MergeSort; Si23w'T
import org.rut.util.algorithm.support.QuickSort; wfu`(4
import org.rut.util.algorithm.support.SelectionSort; XrMw$_0)
import org.rut.util.algorithm.support.ShellSort; LB$0'dZU
*'M+oi
/** w&es N$2
* @author treeroot E;4d lL`*
* @since 2006-2-2 &jg>X+;
* @version 1.0 6[a;83
*/ }FkF1?C
public class SortUtil { W;P8'_2Y
public final static int INSERT = 1; TJ0;xn6o
public final static int BUBBLE = 2; ~<3J9\z1
public final static int SELECTION = 3; KzZRFEA_
public final static int SHELL = 4; wQOIUvd
public final static int QUICK = 5; /+?eSgM/
public final static int IMPROVED_QUICK = 6; `M,Gsy1h
public final static int MERGE = 7; (ZD~Q_O-
public final static int IMPROVED_MERGE = 8; SA,+oq(
public final static int HEAP = 9; kSjvY&n%
F@-8J?Hl:
public static void sort(int[] data) { *#o2b-[V
sort(data, IMPROVED_QUICK); ?;
tz
} r]bG,?|
private static String[] name={ sbq:8P#
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Tl-Ix&37
}; AXPdgo6
a)rT3gl
private static Sort[] impl=new Sort[]{ nm@.]
"/
new InsertSort(), D'"l%p
new BubbleSort(), #7naI*O
new SelectionSort(), TA!6|)BUW
new ShellSort(), #UqE%g`J
new QuickSort(), &MJ`rj[%
new ImprovedQuickSort(), BVxk}#d
new MergeSort(), D4U<Rn6N_5
new ImprovedMergeSort(), f(*iagEy
new HeapSort() /k=krAz.
}; X->` ~-aj
+qM2&M
public static String toString(int algorithm){ z_nY>_L83*
return name[algorithm-1]; \|C~VU@
} Qa,$_,E
l#3jJn
public static void sort(int[] data, int algorithm) { O+ J0X*&x
impl[algorithm-1].sort(data); *30T$_PiX|
} $&.
rS.*
#8a k=lL
public static interface Sort { JYa3xeC;
public void sort(int[] data); uB+:sX-L
} z v:o$2Z
L?b;TjLe
public static void swap(int[] data, int i, int j) { z/f0.RJ
int temp = data; [yDOvQ[
data = data[j]; T)Pr%kF
data[j] = temp; opon"{
} @e^(V$ap
} 7$Pf