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。 ',Oc+jLR
插入排序: UXS+GAWU
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package org.rut.util.algorithm.support; J
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import org.rut.util.algorithm.SortUtil; (jh0cy}|]
/** K+U0YMRmz
* @author treeroot cn
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* @since 2006-2-2 ;sSRv9Xb
* @version 1.0 *^%ohCUi
*/ %G] W Oq=q
public class InsertSort implements SortUtil.Sort{ `]2y=f<{X
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/* (non-Javadoc) J\ ?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LC/%AbM
*/ q[.,i{2R}
public void sort(int[] data) { =co6.Il
int temp; 38RyUHL=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^ s/f.#'
} 0^MRPE|f5
} M`G#cEc
} 74~%4
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} T
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冒泡排序: T!H }^v
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package org.rut.util.algorithm.support; F)tcQO"G
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import org.rut.util.algorithm.SortUtil; qP[jtRIN
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/** (M t-2+"+
* @author treeroot X
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* @since 2006-2-2 K~\Ocl
* @version 1.0 [Kanj/
*/ oSs~*mf
public class BubbleSort implements SortUtil.Sort{ )!D,;,aQ
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@,
/* (non-Javadoc) LZ~}*}jy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @yn1#E,
*/ ;U<rFs40
public void sort(int[] data) { 5SHZRF(. 2
int temp; 5q.)K
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for(int i=0;i for(int j=data.length-1;j>i;j--){ E"Y[k8-:2/
if(data[j] SortUtil.swap(data,j,j-1); Ivc/g,
} sMWNzt
} )L7h:%h#
} h!]=)7x;
} jL#`CD
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} yUFT9bD
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选择排序: Md1ePp]
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package org.rut.util.algorithm.support; #;>v,Jo
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import org.rut.util.algorithm.SortUtil; /:aY)0F0<&
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/** ft4(^|~
* @author treeroot 32,Y3!%
* @since 2006-2-2 ;[[oZ
* @version 1.0 sxU
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*/ 1ihdH1rg[
public class SelectionSort implements SortUtil.Sort { zM|Y
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/* ABnJ{$=n#
* (non-Javadoc) %pImCpMR
* 6n$g73u<=3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z {*<Gx
*/ @L5s.]vg=
public void sort(int[] data) { V82N8-l
int temp; F]KAnEf
for (int i = 0; i < data.length; i++) { xU;;@9X
int lowIndex = i; IpI|G!Y,
for (int j = data.length - 1; j > i; j--) { 7,EdJ[CR$
if (data[j] < data[lowIndex]) { Ya-kMUW
lowIndex = j; D1f}g
} w|8T6W|w
} jB%aHUF;
SortUtil.swap(data,i,lowIndex); (<xl _L:*.
} xr1,D5
} TKZ[H$Z
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} _T.k/a
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Shell排序: z[0B"f
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package org.rut.util.algorithm.support; phqmr5s^H
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import org.rut.util.algorithm.SortUtil; 5?1:RE(1
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/** =^`?O* /;
* @author treeroot X_2pC|C
* @since 2006-2-2 ) i=.x+Q
* @version 1.0 f#b;s<G
*/
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public class ShellSort implements SortUtil.Sort{ *'h J5{U
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/* (non-Javadoc) R&]#@PW^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *32hIiCm
*/ w>h\643
public void sort(int[] data) { cCbZ*
for(int i=data.length/2;i>2;i/=2){ g.T:72"
for(int j=0;j insertSort(data,j,i); swLrp
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} #8qhl
} U/9_:
insertSort(data,0,1); \*5${[
} T43Jgk,
6_kv~`"t Z
/** S<UWv@`U"
* @param data 0;2"X[e
* @param j Y2Y)| <FH
* @param i b]k9c1x
*/ HGlQZwf
private void insertSort(int[] data, int start, int inc) { ~l"]J'jF"H
int temp; bn6WvC3?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k}FmdaPI'
} I::|d,bR!
} ]YWz;Z
} JBt2R=
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} F;sZc,Y,^
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快速排序: .6[7D
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package org.rut.util.algorithm.support; 0<#>LWaM_
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import org.rut.util.algorithm.SortUtil; LeaJ).Maw
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/** 4Be'w`Q {
* @author treeroot `R6dnbH
* @since 2006-2-2 _ UGR+0'Q\
* @version 1.0 z~(3S8$
*/ $*hqF1Q
public class QuickSort implements SortUtil.Sort{ z1S
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/* (non-Javadoc) hU6oWm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iR]K!j2
*/ dpSNh1
public void sort(int[] data) { }WDzzjDR+
quickSort(data,0,data.length-1); k{ ~0BK
} TP{2q51yM
private void quickSort(int[] data,int i,int j){ Wmc@:
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int pivotIndex=(i+j)/2; p(Ux]_s%
file://swap +o-jMvK9
SortUtil.swap(data,pivotIndex,j); ???` BF[|
zv0bE?W9
int k=partition(data,i-1,j,data[j]); Lv
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SortUtil.swap(data,k,j); IRyZ0$r:e\
if((k-i)>1) quickSort(data,i,k-1); %8{nuq+c
if((j-k)>1) quickSort(data,k+1,j); 7BkY0_KK
RG_.0'5=hc
} I>JBGR`j
/** F<TIZ^gFP
* @param data |ya.c\}q
* @param i WT63ve
* @param j ?"$Rw32
* @return V@rqC[on
*/ ->L> `<7(
private int partition(int[] data, int l, int r,int pivot) { A~}5T%qb
do{ ]p!)8[<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QTC!vKM
SortUtil.swap(data,l,r); HT
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} %z~=Jz^
while(l SortUtil.swap(data,l,r); 55Y a(E
return l; ( 4(,"
} "fu:hHq
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} 4i7+'F
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改进后的快速排序: 5Mz:$5Tm
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package org.rut.util.algorithm.support; ny1;]_X_
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import org.rut.util.algorithm.SortUtil; _;M3=MTM9
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/** /mXxj93UA
* @author treeroot i&YWutG
* @since 2006-2-2 #/B g5:
* @version 1.0 Bmt^*;WY+
*/ 6=:s3I^
public class ImprovedQuickSort implements SortUtil.Sort { `I.pwst8i-
@;\0cEn>
private static int MAX_STACK_SIZE=4096; Q_>W!)p Gz
private static int THRESHOLD=10; R,ZG?/#uM9
/* (non-Javadoc) nF
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MXiQWg$
*/ dTjDVq&Hz
public void sort(int[] data) { 6EeO\Qj{
int[] stack=new int[MAX_STACK_SIZE]; |j~l%d*<w
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int top=-1; vUCmm<y
int pivot; ;5DDV6
int pivotIndex,l,r; aW-6$=W
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stack[++top]=0; tI)|y?q
stack[++top]=data.length-1; _n1[(I
'o~gT ;T#
while(top>0){ Al=ByX @
int j=stack[top--]; B"8jEYT5
int i=stack[top--]; t)1`^W}
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pivotIndex=(i+j)/2; MU%7'J :_
pivot=data[pivotIndex]; v7n@CWnN
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SortUtil.swap(data,pivotIndex,j); IC?(F]$%>
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file://partition uP+VS>b
l=i-1; +Qf}&D_
r=j; *YSRZvD<\
do{ |nE4tN#J<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /3&MUB*z&y
SortUtil.swap(data,l,r); SA7(EJ95
} Re&"Q8I.8
while(l SortUtil.swap(data,l,r); [Q+k2J_h
SortUtil.swap(data,l,j); P?S]Q19Q4
5vg="@O K
if((l-i)>THRESHOLD){ sn"z'=ch
stack[++top]=i; xv&h>GOg
stack[++top]=l-1; hD=.rDvO
} |c^ ?tR<
if((j-l)>THRESHOLD){ }wkY`"
stack[++top]=l+1; <v'&Pk<
stack[++top]=j; )U=]HpuzI
} ]IE Z?+F,
<z\ `Ma
} ?U{<g,^
file://new InsertSort().sort(data); ^GyZycch
insertSort(data); 2,wwI<=E'
} -Caj>K
/** JQ6M,O
* @param data hGkJ$QT
*/ kRc+OsY9
private void insertSort(int[] data) { xx(C$wCJ
int temp; R<U]"4CBx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $dF3@(p
} G:p85k`
} 0Ni{UV?
k
} 8xg^="OJ
1)MDnODJ
} &a;?o~%*]i
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归并排序: M(zZ8#
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package org.rut.util.algorithm.support; QW$p{ zo
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import org.rut.util.algorithm.SortUtil; !1fZ7a
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/** -sfv"?
* @author treeroot HA*L*:0
* @since 2006-2-2 P.qzP/Ny
* @version 1.0 I{jvUYrKH
*/ )9:5?,SO
public class MergeSort implements SortUtil.Sort{ (v%24bv
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/* (non-Javadoc) q;")
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uINdeq 7|F
*/ 0'fswa)
public void sort(int[] data) { 9&5<ZC-D
int[] temp=new int[data.length]; ".tL+A[
mergeSort(data,temp,0,data.length-1); Ff%V1BH[
} @(~:JP?KNC
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private void mergeSort(int[] data,int[] temp,int l,int r){ `r -jWK\
int mid=(l+r)/2; \?d3Pn5`
if(l==r) return ; 4G?^#+|^
mergeSort(data,temp,l,mid); u}gavG l
mergeSort(data,temp,mid+1,r); P=5+I+
for(int i=l;i<=r;i++){ ANy*'/f
temp=data; >
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} NOuG# P
int i1=l; D**GC
int i2=mid+1; 7P7OTN
for(int cur=l;cur<=r;cur++){ EP 4]#]5
if(i1==mid+1) {@^;Nw%J
data[cur]=temp[i2++]; B+j]C$8}
else if(i2>r) Z(T{K\)uN
data[cur]=temp[i1++]; RHg-Cg`
else if(temp[i1] data[cur]=temp[i1++]; . \"k49M`
else `(sb
data[cur]=temp[i2++]; R<Lf>p>_
} `daqzn
} wOl?(w=|
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} )&Oc7\J,
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改进后的归并排序: >w@+cUto
`x#Ud)g
package org.rut.util.algorithm.support; t82'K@sq
lGl'A}]#$
import org.rut.util.algorithm.SortUtil; OegeZV
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/** 6(Pan%
* @author treeroot i(^U<DW$
* @since 2006-2-2 b.&WW
* @version 1.0 rtRbr_
*/ S3E,0%yo+)
public class ImprovedMergeSort implements SortUtil.Sort { Z[oEW>_A
7{L4a\JzT
private static final int THRESHOLD = 10; T)rE#"_]{
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/* .$%p0Yx+
* (non-Javadoc) ,erf{"Nh
* 0jf6 z-4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ ;npdFy
*/ :oP LluW*
public void sort(int[] data) { :TH cI;PG8
int[] temp=new int[data.length]; 2}r=DAe0
mergeSort(data,temp,0,data.length-1); <Ep L<K%
} rp||#v0l!w
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private void mergeSort(int[] data, int[] temp, int l, int r) { ["Ltqgx
int i, j, k; 2T~cOH;T
int mid = (l + r) / 2; ?pTX4a&>
if (l == r) $zMshLT
return; mll:rWC)
if ((mid - l) >= THRESHOLD) sjr,)|#[
mergeSort(data, temp, l, mid); ;uUFgDi
else :8A+2ra&
insertSort(data, l, mid - l + 1); Ey&H?OFiP
if ((r - mid) > THRESHOLD) elOeXYO0
mergeSort(data, temp, mid + 1, r); G%<}TI1}
else Nr~$i% [
insertSort(data, mid + 1, r - mid); N{;!xIv
;sZG=y@
for (i = l; i <= mid; i++) { Gt9$hB7
temp = data; 2 |s ohF
} (^d7K:-'
for (j = 1; j <= r - mid; j++) { Je1d|1!3
temp[r - j + 1] = data[j + mid]; bbK};u
} @ _Ey"k<
int a = temp[l]; <'a~ Y3B"o
int b = temp[r]; ,,'jyqD
for (i = l, j = r, k = l; k <= r; k++) { H}^ '
if (a < b) { +I3jI <
data[k] = temp[i++]; :v&[!
a = temp; \<4N'|:
} else { e1m?g&[
data[k] = temp[j--]; cO~<iy
b = temp[j]; Z!1D4`w
} 1-KNXGb'
} KA5)]UF`l
} 9DxHdpOk
`8:)? 0Ez
/** CLR1CGnn7
* @param data O
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* @param l Rh!UbEPjC
* @param i Ms{";qiG
*/ (vs<Fo|]
private void insertSort(int[] data, int start, int len) { N:1aDr;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Kg[OUBv
} 'wND
} %tCv-aX4
} RgJ@J/p"
} [XfR`@
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堆排序: -+#%]P8l
f%Q{}fC{*
package org.rut.util.algorithm.support; Gm=qn]c
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import org.rut.util.algorithm.SortUtil; -Zt!H%U
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/** N9e'jM>Oos
* @author treeroot "TV'}HH
* @since 2006-2-2 &`"DG$N(
* @version 1.0 $*yYmF
*/ diq}\'f
public class HeapSort implements SortUtil.Sort{ D'"
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/* (non-Javadoc) $
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SK<Rk
*/ n
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public void sort(int[] data) { t un}rdb
MaxHeap h=new MaxHeap(); Ot=jwvw
h.init(data); #@XBHJD\#
for(int i=0;i h.remove(); l& :EKh
System.arraycopy(h.queue,1,data,0,data.length); tcD7OC:"6
} ;FPx
DJP6Z
private static class MaxHeap{ i]JTKL{\q
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d
void init(int[] data){ Kb.qv)6i*
this.queue=new int[data.length+1]; D!<F^mtl
for(int i=0;i queue[++size]=data; wu41Mz7
fixUp(size); vwCQvt
} L.Y3/H_
} 8Sbz)X
[);oj<
private int size=0; DiC z%'N
H?$dnwR
private int[] queue; xEb>6+-F@
B=_w9iVN
public int get() { o`U}uqrO
return queue[1]; ZlT }cA/n
} pu-HEv}]a|
eV;r /4
public void remove() { th?+TNb^
SortUtil.swap(queue,1,size--); 9^gYy&+>6]
fixDown(1); E
C?}iP
} BZq#OAp
file://fixdown ^QK`z@B
private void fixDown(int k) { twT/uBQ4a
int j; -'rdN i
while ((j = k << 1) <= size) { X+hHE kJ
if (j < size %26amp;%26amp; queue[j] j++; Z%t_1t
if (queue[k]>queue[j]) file://不用交换 6FUW^dt
break; YEL0h0gn
SortUtil.swap(queue,j,k); })g<I+]Hf9
k = j; W5*ldXXk
} 5{c;I<0
} %xt9k9=vZ
private void fixUp(int k) { "TZq")-
while (k > 1) { (lk9](;L
int j = k >> 1; TCr4-"`r-{
if (queue[j]>queue[k]) fr17|#L+s
break; ( }-*irSsj
SortUtil.swap(queue,j,k); HiCh:IP7>/
k = j; _&<n'fK[
} ]#tB[G
} L9GLjRp-
GkGiQf4hh
} F%OP,>zl
Y(Q
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} >O'\
jp}$l
_~kw^!p>Kr
SortUtil: d&AG~,&d|
Nx}nOm
package org.rut.util.algorithm; *PJH&g#Ge
ZU4=&K
import org.rut.util.algorithm.support.BubbleSort; bA;OphO(
import org.rut.util.algorithm.support.HeapSort; X! d-"[
import org.rut.util.algorithm.support.ImprovedMergeSort; Gh;\"Qx
import org.rut.util.algorithm.support.ImprovedQuickSort; l;?:}\sI=
import org.rut.util.algorithm.support.InsertSort; pUIN`ya[[
import org.rut.util.algorithm.support.MergeSort; Q(|@&83].
import org.rut.util.algorithm.support.QuickSort; A8{jEJ=)P
import org.rut.util.algorithm.support.SelectionSort; ZmA}i`
import org.rut.util.algorithm.support.ShellSort; 1w,_D.1'
c<lp<{;
/** RS5<] dy
* @author treeroot f:o.[4p2
* @since 2006-2-2 ~_ THvx1
* @version 1.0 M2$/x`\-~
*/ u$ts>Q;5
public class SortUtil { aLk3Yg@X
public final static int INSERT = 1; b<h((]Q>^
public final static int BUBBLE = 2; 4:/]Y=)x
public final static int SELECTION = 3; V!}I$JiJ
public final static int SHELL = 4; Y}~sTuWU
public final static int QUICK = 5; >xWS>
public final static int IMPROVED_QUICK = 6; -@v^. @[Z&
public final static int MERGE = 7; iZGbNN
public final static int IMPROVED_MERGE = 8; u 3WU0Z`
public final static int HEAP = 9; {X!vb
eG=d)`.JaV
public static void sort(int[] data) { P,v7twc0M
sort(data, IMPROVED_QUICK); r!r08yf
} xfk
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private static String[] name={ Yuv(4a<M%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tXE/aY*I
}; dOjly,!
pF;.nt)
private static Sort[] impl=new Sort[]{ b
74!Zw
new InsertSort(), ;-d b/$O
new BubbleSort(), U[]yN.J
new SelectionSort(), x]^d'o:cDP
new ShellSort(), /s?%ft#-9o
new QuickSort(), 7@ym:6Y+]
new ImprovedQuickSort(), @iz Onc:
new MergeSort(), fu7x,b0p
new ImprovedMergeSort(), 7nt(Rtbsu
new HeapSort() I|X`9
}; `bP`.Wm
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public static String toString(int algorithm){ Kz'GAm\
return name[algorithm-1]; ?QP>rm
} YwVA].p@TI
Xo PJ?63
public static void sort(int[] data, int algorithm) { vo/x`F'ib
impl[algorithm-1].sort(data); pY&6p~\p
} 3u@,OE
#}A"yo
public static interface Sort { ~WrpJjI[
public void sort(int[] data); pte\1q[N
} q<}IO
h#1:ypA6l
public static void swap(int[] data, int i, int j) { [^"}jbn/
int temp = data; =?]`Xo,v~
data = data[j]; ,Yag! i>;
data[j] = temp; RDps{),E;d
} k>i88^kPV
} Fe8X@63