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。 ,:t,$A
插入排序: k'o[iKlu
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package org.rut.util.algorithm.support; Lwl1ta-
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import org.rut.util.algorithm.SortUtil; J
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/** h.EI(Ev"GN
* @author treeroot H,(vTthd
* @since 2006-2-2 $lxpwO
* @version 1.0 gC1LQ!:;Oi
*/ OijuOLt
public class InsertSort implements SortUtil.Sort{ h3@tZL#g
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/* (non-Javadoc) JWb +
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b G:\*1T
*/ p":u]Xgb
public void sort(int[] data) { ;E.]:Ia~
int temp; z=>fBb>w7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d,^O[9UWo
} 23?u_?+4i
} c>LP}PGk
} &>\;4E.O5
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} 1/97_:M0~F
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冒泡排序: '-v:"%s|
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package org.rut.util.algorithm.support; V?Jy
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import org.rut.util.algorithm.SortUtil; ^2kjO/
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/** YmC}q20;
* @author treeroot r
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* @since 2006-2-2 j}u L
* @version 1.0 I-R7+o
*/ -qP)L;n
public class BubbleSort implements SortUtil.Sort{ <e UsMo<
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/* (non-Javadoc) 6m_mma_,&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j-K[]$
*/ H^-Y]{7
public void sort(int[] data) { H,%bKl#
int temp; ;oOTL'Vu
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4t[7lL`Z
if(data[j] SortUtil.swap(data,j,j-1); U6&`s%mIa
} ,iyy2
} tc'iKJ5)
} :H&Q!\a
} uz!8=,DFw
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} d'';0[W)
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选择排序: )-4c@
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package org.rut.util.algorithm.support; UVw^t+n
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import org.rut.util.algorithm.SortUtil; )E.AY
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/** in1rDN%Vi
* @author treeroot D)-LZbPa
* @since 2006-2-2 Jt[ug26
* @version 1.0 |?88EG@05
*/ 4;YP\{u
public class SelectionSort implements SortUtil.Sort { QGpj$ _b
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/* _x.2&S89
* (non-Javadoc) .+9*5
* .:?v;rYk{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E>_Rsw *
*/ 4~}NB%,
public void sort(int[] data) { ZD&F ,2v
int temp; $V87=_}
for (int i = 0; i < data.length; i++) { 6u"wgX]H
int lowIndex = i; 6(QfD](2}
for (int j = data.length - 1; j > i; j--) { p(RF
if (data[j] < data[lowIndex]) { B!+c74
lowIndex = j; 9Kd=GL_
} 8ae`V!5
} c[-N A
SortUtil.swap(data,i,lowIndex); 7rdmj[vu
} Nr*l3Z>LD
}
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} 2 ,nhs,FZ
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Shell排序: uj3`M9
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package org.rut.util.algorithm.support; F${sEtH
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import org.rut.util.algorithm.SortUtil; |mH* I
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/** 4XAB_Q
* @author treeroot `/WxEu3
* @since 2006-2-2 C|]c#X2t3
* @version 1.0 VrW]|jIu*
*/ ]|3hK/
public class ShellSort implements SortUtil.Sort{ F$8:9eL,T
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/* (non-Javadoc) &n1Vv_Lb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kl. *Q
*/ G
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public void sort(int[] data) { t`6]eRR
for(int i=data.length/2;i>2;i/=2){ $ #!oejLD
for(int j=0;j insertSort(data,j,i); gOg7:VPG
} ]C^ #)7
} I;@q`Tm
insertSort(data,0,1); mPA)G,^
} GSRf/::I}4
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/** q;9X8 _
* @param data p.:|Z-W$
* @param j RZxh"lIo
* @param i a?W5~?\9
*/ eztK`_n
private void insertSort(int[] data, int start, int inc) { QuS=^,]
int temp; : ?f+*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QP(d77n
} _gVihu
} ;.jj>1=Tnl
} R_j.k3r4d
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} o135Xh$_>'
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快速排序: rT R$\ [C
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package org.rut.util.algorithm.support; ;I5P<7VW
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import org.rut.util.algorithm.SortUtil; {EZR}N
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/** 6OE
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* @author treeroot CY?J$sN
* @since 2006-2-2 EC\@$Fg
* @version 1.0 $x }R2
*/ { 5 r]G
public class QuickSort implements SortUtil.Sort{ |gV~U~A]
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/* (non-Javadoc) iJOoO"Ai
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xlZh(pf
*/ J-+mdA
public void sort(int[] data) { 3F,M{'q
quickSort(data,0,data.length-1); ;jxX /c
} 2+u+9 rW
private void quickSort(int[] data,int i,int j){ @~gPZm
int pivotIndex=(i+j)/2; RV@B[:
file://swap GQg
2!s(
SortUtil.swap(data,pivotIndex,j); DvhFCA}z
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int k=partition(data,i-1,j,data[j]); MVMJl ">
SortUtil.swap(data,k,j); !43nL[]
if((k-i)>1) quickSort(data,i,k-1); +m
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if((j-k)>1) quickSort(data,k+1,j);
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} skeeec\V
/** X,3"4 SK
* @param data YAR$6&
* @param i ExS&fUn`C
* @param j P[aE3Felk
* @return '[6]W)f
*/ :&5u)
private int partition(int[] data, int l, int r,int pivot) { BUZ74
do{ zecM|S _
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YQ+8lANC
SortUtil.swap(data,l,r); X%-"b`
} 7VfXE/
while(l SortUtil.swap(data,l,r); XSx!11
return l; 4+qo=i
} &5jc
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} s]yZ<uA
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改进后的快速排序: %^W(sB$b
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; =?L16mu1&
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/** "o%okN
* @author treeroot :hOB
* @since 2006-2-2 y< gRl/e
* @version 1.0 vy
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*/ c-zW
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public class ImprovedQuickSort implements SortUtil.Sort { l
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private static int MAX_STACK_SIZE=4096; 0<A*I{,4L
private static int THRESHOLD=10; gT[] "ZT7
/* (non-Javadoc) 6jMc|he
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gRs@T<k2
*/ s4 ,`
public void sort(int[] data) { \B
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int[] stack=new int[MAX_STACK_SIZE]; 6k')12~'
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int top=-1; Lniz>gSc
int pivot; ;U0w<>4L
int pivotIndex,l,r; V#599-
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stack[++top]=0; JWu0VLo
stack[++top]=data.length-1; Y)8 Py1}
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while(top>0){ %N\45nYU:
int j=stack[top--]; !*^+7M
int i=stack[top--]; ;|= 5)KE
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pivotIndex=(i+j)/2; "kt7m
pivot=data[pivotIndex]; =H-BsX?P
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SortUtil.swap(data,pivotIndex,j); mr>E'd.'
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file://partition 1"A"AMZf
l=i-1; T*k{^=6"!
r=j;
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do{ DbI)tDi5D
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =f=>buD
SortUtil.swap(data,l,r); {JQV~rfh`
} m,5m'9dj
while(l SortUtil.swap(data,l,r); abVEi[nP
SortUtil.swap(data,l,j); X.e4pLwGK
uf)!SxT
if((l-i)>THRESHOLD){ Ayw {I#"
stack[++top]=i; +IGSOWL
stack[++top]=l-1; &mJm'Ks
} 1A]
if((j-l)>THRESHOLD){ yqb$,$
stack[++top]=l+1; c]ll89`||
stack[++top]=j; ) WkN34Q
} \= 6dF,V
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} )CH\]>-FO
file://new InsertSort().sort(data); ckdCd
J
insertSort(data); dpdp0
} j%S}
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/** mg3YKHNG
* @param data o
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*/ MA=gCG/JD
private void insertSort(int[] data) { &)Vuh=
int temp; {- &wV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Np
opg1Gv>
} 74Aecb{
} ~!fOl)F
} skLr6Cs|
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mH c
} R,hwn2@B
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归并排序: i1qmFvksl
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package org.rut.util.algorithm.support; 2ak*aI
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import org.rut.util.algorithm.SortUtil; E_xCRfw_i]
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/** + VhD]!
* @author treeroot N@? z&urQi
* @since 2006-2-2 R"`<ZY6(Ou
* @version 1.0 0$R}_Ok
*/ Nk\/lK\
public class MergeSort implements SortUtil.Sort{ I~M@v59C
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/* (non-Javadoc) X5)].[d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yEL5U{
*/ @vi;P ^1!
public void sort(int[] data) { F^DDN7AKH
int[] temp=new int[data.length]; k+u L^teyS
mergeSort(data,temp,0,data.length-1); (ap,3$hS
} ;:~-=\
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private void mergeSort(int[] data,int[] temp,int l,int r){ c_6~zb?k+m
int mid=(l+r)/2; h],l`lT1\
if(l==r) return ; }(UU~V
mergeSort(data,temp,l,mid); ;`Wh^Qgi
mergeSort(data,temp,mid+1,r); }@A{'q5y
for(int i=l;i<=r;i++){ V*+Z=Y'
temp=data; IDt7KJ@hc
} @ojV8
int i1=l; &~N@M!`Dn
int i2=mid+1; mk`#\=GE
for(int cur=l;cur<=r;cur++){ UTxqqcqEny
if(i1==mid+1) y=e|W=<D&
data[cur]=temp[i2++]; Tml>>O
else if(i2>r) hLSas#B>
data[cur]=temp[i1++]; G8CM
else if(temp[i1] data[cur]=temp[i1++]; JN<u4\e{-&
else X./7b{Pax
data[cur]=temp[i2++]; &Y8S! W@4
} d+6-ten
} qJJ~#W)
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} V53iWWaFe
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改进后的归并排序: !-|{B3"6
fJOA5(
package org.rut.util.algorithm.support; &n2dL->*#
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import org.rut.util.algorithm.SortUtil; }woNI
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/** {#TZFB
* @author treeroot X2C&q$8
* @since 2006-2-2 } |? W
* @version 1.0 a.G;s2>
*/ s#C~HK
public class ImprovedMergeSort implements SortUtil.Sort { uU`Mq8)R
FP h1 }qS
private static final int THRESHOLD = 10; wb (quu
kiR+ Dsl
/* aL0,=g%
* (non-Javadoc) <.c#l':
* 8s<t*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QR{pph*zn-
*/ p V`)
public void sort(int[] data) { %b3s|o3An
int[] temp=new int[data.length]; 2mPU /
mergeSort(data,temp,0,data.length-1); [f@[gE
} "s
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@6z]Xb
private void mergeSort(int[] data, int[] temp, int l, int r) { \~@a/J
int i, j, k; De:| T8&
int mid = (l + r) / 2; ;{K/W.R
if (l == r) /UPe@
return; YhFd0A?]
if ((mid - l) >= THRESHOLD) 0%GQXiy
mergeSort(data, temp, l, mid); f-l(H="e
else }*M>gvPo
insertSort(data, l, mid - l + 1); Yuqt=\? #
if ((r - mid) > THRESHOLD) GUdVsZjz(
mergeSort(data, temp, mid + 1, r); xe!6Pgcb
else C.q4rr
insertSort(data, mid + 1, r - mid); .Fn7yTQ%
;UDd4@3`S"
for (i = l; i <= mid; i++) { KMogwulG
temp = data; ?CUGJT
} ~jn~M_}K
for (j = 1; j <= r - mid; j++) { 4ROuy+Ms'
temp[r - j + 1] = data[j + mid]; Q\[2BJo/
} 3!0~/8!f@
int a = temp[l]; e?)ic\K
int b = temp[r]; 6]5e(J{Fz
for (i = l, j = r, k = l; k <= r; k++) { YO`V'6\
if (a < b) { ?'r=>'6D
data[k] = temp[i++]; 8UN7(J
a = temp; I`FqZw
} else { DE _<LN
data[k] = temp[j--]; h}cR>
b = temp[j]; =^S1+B
MY-
} w{5v*SHl}`
} %XAF"J
}
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/** "YePd*W
* @param data ^OnZ9?C{R
* @param l UbSAyf
* @param i JUlCj#%
*/ ] B3\IT
private void insertSort(int[] data, int start, int len) { E\dJb}"x %
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /#xx,?~xx0
} G[M{TS3&Ds
} 2
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} [|"{a
} ;{hE]jReH
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堆排序: xN=:*#Z"pb
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package org.rut.util.algorithm.support; Cqc5jx0)
0mD=Rjb*a
import org.rut.util.algorithm.SortUtil; \zGmZZ
f?|cQ[#t!\
/** z*B-`i.
* @author treeroot F>/"If#
* @since 2006-2-2 2UJjYrm
* @version 1.0 )7}f.
*/ Y$&+2w,)H,
public class HeapSort implements SortUtil.Sort{ s(MLBV5)w
C)xM>M_CB
/* (non-Javadoc) @Rp#*{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nr#" 5<W
*/ 2E*h,Mo
public void sort(int[] data) { o+I'nFtnI
MaxHeap h=new MaxHeap(); sxFkpf_h
h.init(data); `37$YdX
for(int i=0;i h.remove(); HH3Ln+AWg_
System.arraycopy(h.queue,1,data,0,data.length); 7ajkp+E6
} .`Rju|l
nYbI =_-
private static class MaxHeap{ A4`3yy{0-
\GEf,%U<K
void init(int[] data){ bfl%yGkd/|
this.queue=new int[data.length+1]; Hm*?<o9mxC
for(int i=0;i queue[++size]=data; 1DT}_0{0Q
fixUp(size); 7r,h[9~e
} deVbNg8gs
} UG:S! w'
na,i(m?l
private int size=0; 1]% ]"JbV
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private int[] queue; rVF7!|&
%kSpMj|
public int get() { l11+sqg
return queue[1]; $>=?'wr
} CZ4Nw]dtR
a15kFun
public void remove() { ,J)wn;@
SortUtil.swap(queue,1,size--); aq-R#q
fixDown(1); ,3~[cE<4
} ?|,-Bft3
file://fixdown w9Z,3J6r
private void fixDown(int k) { 5w#7B
int j; T(2*P5%&
while ((j = k << 1) <= size) { W_%@nm\y
if (j < size %26amp;%26amp; queue[j] j++; 3;Ztm$8
if (queue[k]>queue[j]) file://不用交换 &x>8
%Q s
break; &2\^S+4
SortUtil.swap(queue,j,k); E/IoYuB
k = j; ])3(@.
} R-lpsvDDL2
} |h(05Kbk
private void fixUp(int k) { tVFydN~
while (k > 1) { 4<(U/58a*
int j = k >> 1; I5mtr
if (queue[j]>queue[k]) W&`{3L
break; m(o^9R_=^9
SortUtil.swap(queue,j,k); "nQ&~KQ
k = j; 0P7sMCYu
} -jdhdh
} .Mb<.R3
3tu:Vc.:M
} V~!lY\
6<qVeO&uZ
} U1 ;<NUg
Bt[Wh@
SortUtil: lJIcU
RI4
!Pf6UNN'
package org.rut.util.algorithm; `y0u(m5
[,86||^
import org.rut.util.algorithm.support.BubbleSort; }ofx?s}
import org.rut.util.algorithm.support.HeapSort; 5g\>x;cc
import org.rut.util.algorithm.support.ImprovedMergeSort; @4xV3Xkf&C
import org.rut.util.algorithm.support.ImprovedQuickSort; .bloaeu-
import org.rut.util.algorithm.support.InsertSort; :Cdqj0O3u
import org.rut.util.algorithm.support.MergeSort; J*FUJT
import org.rut.util.algorithm.support.QuickSort; EPu-oE=HW4
import org.rut.util.algorithm.support.SelectionSort; UZJ<|[
import org.rut.util.algorithm.support.ShellSort; +pG[
[}/
v_L2>Pa.
/** Wv7hY"
* @author treeroot iPeW;=-2Wk
* @since 2006-2-2 [8v>jQ)
* @version 1.0 .mwB'Ll
*/ +]dh`8*8>1
public class SortUtil { H&_drxUq;L
public final static int INSERT = 1; G%FLt[
public final static int BUBBLE = 2; S\"#E:A
public final static int SELECTION = 3; ]21`x
public final static int SHELL = 4; x*7Q
public final static int QUICK = 5; @/f'i9?oM`
public final static int IMPROVED_QUICK = 6; `% ulorS
public final static int MERGE = 7; f@7HVv&
public final static int IMPROVED_MERGE = 8; J_`a}ox
public final static int HEAP = 9; tQ7:4._
)~2~q7
public static void sort(int[] data) { 7GG:1:2+>
sort(data, IMPROVED_QUICK); >O$JS,
} y)*W!]:7^>
private static String[] name={ u0{R;)
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3)0z( 30
}; gUWW}*\ U
E -+t[W
private static Sort[] impl=new Sort[]{ (\$=de>?
new InsertSort(), b9RJ>K
new BubbleSort(), +Z=%4
new SelectionSort(), "J"RH:$v
new ShellSort(), H9%[!
RF
new QuickSort(), cf+EQY
new ImprovedQuickSort(), P1qQ)-J
new MergeSort(), aGbHDo
new ImprovedMergeSort(), !))!!{
new HeapSort() U
ljWBd
}; "[
#.
cJLAP%.L
public static String toString(int algorithm){ p>9|JMk
return name[algorithm-1]; 20Z=_},
} d\-v+'d*+
E/@
public static void sort(int[] data, int algorithm) { ?DgeKA"A
impl[algorithm-1].sort(data); V:<Z
} >QSlH]M
>1 %|T
public static interface Sort { twP%+/g]<
public void sort(int[] data); <IO@Qj1*
} S;iJQS
TD.t)
public static void swap(int[] data, int i, int j) { Dn[u zY6
int temp = data; t>}(`0
data = data[j]; \__xTL\
data[j] = temp; Hj97&C{Q^
} 1A}#j
} zGaqYbQD