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。 w[/m:R?eX
插入排序: dK7BjZTJo
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package org.rut.util.algorithm.support; Q&&oP:4~X*
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import org.rut.util.algorithm.SortUtil; k}e~xbh-y
/** #6 M3BF
* @author treeroot cTdX'5
* @since 2006-2-2 q) y<\cEO
* @version 1.0 e^-CxHwA-
*/ ~L9I@(/S
public class InsertSort implements SortUtil.Sort{ le~p2l#e
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/* (non-Javadoc) ")3$. '5Dg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "E7YCZQR
*/ ;Lk07+3G
public void sort(int[] data) { ~lr,}K,
int temp; n fMU4(:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mfr7w+DK
} ,xy$h }g
} .\"8H1I\T
} ?PU7xO;_
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} D8)6yPwE
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冒泡排序: Gg5+Ap D
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package org.rut.util.algorithm.support; 'E4}++\
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import org.rut.util.algorithm.SortUtil; oN=>U"<\1
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/** Z4D[nPm$
* @author treeroot X=%e'P*X
* @since 2006-2-2 t+A9nvj)
* @version 1.0 4&G
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*/ 6rN.)dL.#N
public class BubbleSort implements SortUtil.Sort{ [(Ihu e
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/* (non-Javadoc) ZO]P9b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a}'dIDj
*/ S.*LsrSV
public void sort(int[] data) { _''9-t;n,
int temp; k6(0:/C
for(int i=0;i for(int j=data.length-1;j>i;j--){ l6pvQ|
if(data[j] SortUtil.swap(data,j,j-1); v`r*Yok;`
} |L(h+/>aWX
} 4Xe8j55
} iB5'mb*
} %ZGG6Xgw
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} f^G-ba
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选择排序: gh.+}8="
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package org.rut.util.algorithm.support; x+,:k=JMT
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import org.rut.util.algorithm.SortUtil; NwNjB
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/** @J<RFgw#
* @author treeroot &L r~x#Wx
* @since 2006-2-2 b$>1_wTL
* @version 1.0 QQ./!
*/ F?b"Rv
public class SelectionSort implements SortUtil.Sort { =s,}@iqNO4
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/* & DhdB0Hjf
* (non-Javadoc) .T#}3C/
* PyM59v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !3 zN [@w,
*/ Ceew~n{
public void sort(int[] data) { $ <Mf#.8%
int temp; jm,c Vo
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; .a 9f)^
for (int j = data.length - 1; j > i; j--) { v>0} v)<v
if (data[j] < data[lowIndex]) { wx_j)Wij6
lowIndex = j; - 9a4ej5
}
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} "0J;H#Y"#
SortUtil.swap(data,i,lowIndex); <l<6W-I
} &o'$uLF~Y
} =kBN&v_(!
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} Oe lf^&m
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Shell排序: XCyr r2^
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package org.rut.util.algorithm.support; gB]jLe
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import org.rut.util.algorithm.SortUtil; I !O5+Er
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/** UvuAN:'
* @author treeroot k \\e`=
* @since 2006-2-2 c"/Hv
* @version 1.0 "b\@.7".
*/ u4ZOHy_O^
public class ShellSort implements SortUtil.Sort{ 2W}jbOy
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/* (non-Javadoc) b fI= =
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >{>X.I~
*/ ?Zc(Zy6
public void sort(int[] data) { 3zMaHh)mj
for(int i=data.length/2;i>2;i/=2){ )C0d*T0i
for(int j=0;j insertSort(data,j,i); J>1%*Tz
} O"J"H2}S
} ^ LVKXr
insertSort(data,0,1); XC4wm#R
} GIhFOK
rTim1<IXR
/** H{1'- wB
* @param data _}tPtHPa/
* @param j B(Er/\-@U
* @param i HJt
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*/ 6xx(o
private void insertSort(int[] data, int start, int inc) { }H|'W[Q.
int temp; F12$BKDH
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |qpFR)l
} .TNGiUzG
} ?nZe.z-%6
} gnw">H
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} 9K-,#a
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快速排序: vb3hDy
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package org.rut.util.algorithm.support; 0bteI*L
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import org.rut.util.algorithm.SortUtil; yYdh+ x
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/** 0 gR_1~3
* @author treeroot S}qGf%
* @since 2006-2-2 rA}mp]
* @version 1.0 15d'/f
*/ -K/c~'%'*
public class QuickSort implements SortUtil.Sort{ f6 s .xQ
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/* (non-Javadoc) *bUOd'vh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0bOT&Z^
*/ ua,!kyS
public void sort(int[] data) { #44}Snz
quickSort(data,0,data.length-1); [}dPn61
} tTT
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private void quickSort(int[] data,int i,int j){ $GYy[8{:V
int pivotIndex=(i+j)/2; 1p=bpJC
file://swap
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SortUtil.swap(data,pivotIndex,j); 8Yo;oHk7
MeV*]*
int k=partition(data,i-1,j,data[j]); B qLL]%F
SortUtil.swap(data,k,j); 03"FK"2S
if((k-i)>1) quickSort(data,i,k-1); .@$A~/ YU
if((j-k)>1) quickSort(data,k+1,j); 6W:FT Pt44
j1=su~
} m[Mw2 F
/** G!lF5;Ad`
* @param data 9+ |W;
* @param i
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* @param j I=
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* @return @mb' !r
*/ t*`Sme]"B
private int partition(int[] data, int l, int r,int pivot) { eKf5orN
do{ stiYC#b I:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); AuZISb%6
SortUtil.swap(data,l,r); \i\>$'f*z
} p3e=~{v*
while(l SortUtil.swap(data,l,r); ^tIYr<I
return l; 4/OmgBo'
} tlB-s;
)TEod!]
} >E3-/)Ti
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改进后的快速排序: @FF80U4'
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package org.rut.util.algorithm.support; _-2ntO<E
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import org.rut.util.algorithm.SortUtil; M{SJ8+G
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/** + WT?p]
* @author treeroot VCwC$ts
* @since 2006-2-2 Yv0y8Vz@
* @version 1.0 ?Ezy0>j
*/ f?>
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public class ImprovedQuickSort implements SortUtil.Sort { &.qLE
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private static int MAX_STACK_SIZE=4096; We vd6)\
private static int THRESHOLD=10; Wr-I~>D%_
/* (non-Javadoc) Q$sC%P(y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q(A_k+NL
*/ }$g"|;<ha
public void sort(int[] data) { ;#mm_*L%@
int[] stack=new int[MAX_STACK_SIZE]; ~+V$0Q;L
+ R~!G
int top=-1; y=Z[_L!xr
int pivot; *Uy;P>8
int pivotIndex,l,r; $ wDSED -
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stack[++top]=0; &3 Ki
stack[++top]=data.length-1; <{@ D^L6h
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while(top>0){ h
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int j=stack[top--]; _>;{+XRX[
int i=stack[top--]; XVb9)a
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pivotIndex=(i+j)/2; +ej5C:El_}
pivot=data[pivotIndex]; z?F`)}
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SortUtil.swap(data,pivotIndex,j); I!SIy&=W
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file://partition ]9c{qm}y
l=i-1; {fjBa,o
#
r=j; | g1Cs
do{ KZa6*,,s
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (!qfd
Qq#
SortUtil.swap(data,l,r); C6h[L
} %LD(S* >7
while(l SortUtil.swap(data,l,r); mn*}U R
SortUtil.swap(data,l,j); PZO.$'L|7
%oWG"u
if((l-i)>THRESHOLD){ y&bZai8WlE
stack[++top]=i; )>"pm{g2
stack[++top]=l-1; _~*j=XR s
} v#`>
if((j-l)>THRESHOLD){ TK%q}bK,
stack[++top]=l+1; |_QpB?b
stack[++top]=j; d1D=R8P_u
} W;os4'h$
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} ]&9=f#k%
file://new InsertSort().sort(data); R%q:].
insertSort(data); salDGsW^
} jbUg?4k!
/** 6y57m;JW/
* @param data (ti!Y"e2
*/ o*2Mjd]r
private void insertSort(int[] data) { 9U4[o<G]=
int temp; uy~$
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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); IKaW],sr#
} =e0MEV#s.
} C' {B
} Zsmv{p
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} qk>SM|{
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归并排序: [9j,5d&m
2|]
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package org.rut.util.algorithm.support; [>\e@ =
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import org.rut.util.algorithm.SortUtil; :(.:bf
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/** b\zq,0%
* @author treeroot qR_Np5nHF
* @since 2006-2-2 cIa`pU,6A
* @version 1.0 TTbJ9O<43
*/ {P\Ob0)q
public class MergeSort implements SortUtil.Sort{ q/Ji}NGm
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/* (non-Javadoc) 'tcve2Tt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VUP.
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*/ #<U@SMv
public void sort(int[] data) { aY;34SF
int[] temp=new int[data.length]; z@?y(E
mergeSort(data,temp,0,data.length-1); Uovna:"
} 8 nqF i
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private void mergeSort(int[] data,int[] temp,int l,int r){ /~7M @`1
int mid=(l+r)/2; W$&*i1<a+
if(l==r) return ; :#_k`{WG
mergeSort(data,temp,l,mid); i,%N#
mergeSort(data,temp,mid+1,r); Io>U-Zd\>
for(int i=l;i<=r;i++){ Pth4_]US
temp=data; m=/HUt3(&0
} xDSiTp=)O
int i1=l; #pPR>,4
int i2=mid+1; fA0wQz]u
for(int cur=l;cur<=r;cur++){ ;`kOFg#`)c
if(i1==mid+1) "LW\osjen
data[cur]=temp[i2++]; ,KF>@3f
else if(i2>r) Y5B!*+h
data[cur]=temp[i1++]; B|+%ExT7
else if(temp[i1] data[cur]=temp[i1++]; (2"4PU8
else mo=@Zt
data[cur]=temp[i2++]; DYC2bs>
} 45iO2W uur
} 3-n&&<
uC#]F@
} t\!5$P
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改进后的归并排序: #)#'^MZX
/k^j'MMQs6
package org.rut.util.algorithm.support; W~i0.rg|>
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import org.rut.util.algorithm.SortUtil; #q9BU:
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/** gh"_,ZhZt
* @author treeroot ~)X;z"y%b
* @since 2006-2-2 \,:7=
* @version 1.0 -GQ.B{%G
*/ #.Ly
public class ImprovedMergeSort implements SortUtil.Sort { L=s8em]7l
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private static final int THRESHOLD = 10; 73tjDO7d
/^&$ma\
/* ZX{eggXl
* (non-Javadoc) =FFs8&PKys
* gB,Q4acjj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oW(8bd)
*/ Ml+f3#HP
public void sort(int[] data) { o(t`XE['<
int[] temp=new int[data.length]; ~Sd,Tu%:
mergeSort(data,temp,0,data.length-1); ]Rp<64I o
} Y!|};
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private void mergeSort(int[] data, int[] temp, int l, int r) { E!I4I'
int i, j, k; [!ZYtp?Hf
int mid = (l + r) / 2; D6e<1W
if (l == r) +,D82V7S
return; Rob:W|
if ((mid - l) >= THRESHOLD) ~ r$I&8
mergeSort(data, temp, l, mid); y92<(ziaX)
else nXxnyom,
insertSort(data, l, mid - l + 1); [~Z#yEiW^
if ((r - mid) > THRESHOLD) X<1ymb3
mergeSort(data, temp, mid + 1, r); 3|Ar~_]
else xrJ0
insertSort(data, mid + 1, r - mid); rj5)b:c}
PKs$Q=Ol<|
for (i = l; i <= mid; i++) { a<V
Mh79*
temp = data; 2b:I.
} EkN>5).
for (j = 1; j <= r - mid; j++) { /J,&G:
Er
temp[r - j + 1] = data[j + mid]; %g4)f9>
} Pp|pH|(n ,
int a = temp[l]; {Z[kvXf"mZ
int b = temp[r]; $ g#d1u0q
for (i = l, j = r, k = l; k <= r; k++) { _'s5FlZq
if (a < b) { +6Vu]96=KC
data[k] = temp[i++]; "n<u(m8E
a = temp; G&7 } m
} else { k_%maJkXp
data[k] = temp[j--]; yhyh\.
b = temp[j]; GuJIN"P]
} nON"+c*
} .>(qZEF
} m$q*
Lismo#
/** @(rLn
* @param data sZU
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* @param l u\UI6/
* @param i 5d82M s
*/ jY\YSQ
private void insertSort(int[] data, int start, int len) { E`uK7 2j
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /M_kJe,%
} d _koF-7
} _Hq)mF
} %w6lNl
} 9}Zi_xK&|e
u+e.{Z!
堆排序: 4:v{\R
& |o V\L
package org.rut.util.algorithm.support; '~'3x4Bo
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import org.rut.util.algorithm.SortUtil; aMjCqu05
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/** K3t^y`z
* @author treeroot -n'%MT=Cd
* @since 2006-2-2 K?+Rq
* @version 1.0 ]7{-HuQ8>}
*/ x;*KRO
public class HeapSort implements SortUtil.Sort{ O8ZHIs
zHCz[jlrMq
/* (non-Javadoc) T/C1x9=?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Djf,#&j!3
*/ %G s!oD
public void sort(int[] data) { !xK`:[B
MaxHeap h=new MaxHeap(); JEes'H}Y
h.init(data); mWM!6"
for(int i=0;i h.remove(); /fc@=CO
System.arraycopy(h.queue,1,data,0,data.length); 07+Qai-]
} etH%E aF[
Wz7jB6AWA
private static class MaxHeap{ ),)]gw71QW
bXiT}5mJU
void init(int[] data){ DP9hvu/85
this.queue=new int[data.length+1]; `D%bZ%25c
for(int i=0;i queue[++size]=data; l8hOr yB&
fixUp(size); # -Ts]4v
} 7>J8\=
} ( Qw"^lE3
x*[\$E`v
private int size=0; JQ8wL _C>
v}ZQC8wL
private int[] queue; ;,]T|>M
1$T;u~vg
public int get() { V/5.37FSb
return queue[1]; L[o;@+32
} @zo}#.g
t&}Z~Zp
public void remove() { ya7PF~:E-
SortUtil.swap(queue,1,size--); uvR9BL2=
fixDown(1); )@+lfIE(l
} [mwJ* GJ-
file://fixdown U$jw8I'.
private void fixDown(int k) { };;\&#
int j; gq9IJ
while ((j = k << 1) <= size) { pa4,W!t
if (j < size %26amp;%26amp; queue[j] j++; &c!d}pU}
if (queue[k]>queue[j]) file://不用交换 XJJdCv^
break; ZslH2#
SortUtil.swap(queue,j,k); 5@l[!Jl0k
k = j; GP=i6I6C
} HQPb
} EC9D.afy&
private void fixUp(int k) { s}"5uDfn1F
while (k > 1) { R-odc,P=
int j = k >> 1;
qkQ_#
if (queue[j]>queue[k]) YdsY2
break; ybnq;0}$
SortUtil.swap(queue,j,k); Cwo(%Wc
k = j; xX;@
BS
} P$l-p'U-
} ]MI>"hn
@ qFE6!
} Qdepzo>E
epz'GN]V
} :CH*~o
_`RzPIS^
SortUtil: |GmV1hN
?Q$LIoR
package org.rut.util.algorithm; MYVUOd,
1|K>V;C
import org.rut.util.algorithm.support.BubbleSort; `D2wlyqO6
import org.rut.util.algorithm.support.HeapSort; -KzU''
import org.rut.util.algorithm.support.ImprovedMergeSort; t<`h(RczHI
import org.rut.util.algorithm.support.ImprovedQuickSort; %y@iA91K
import org.rut.util.algorithm.support.InsertSort; 5Gj?'Wov9
import org.rut.util.algorithm.support.MergeSort; JGmW>mH
import org.rut.util.algorithm.support.QuickSort; >;E[XG^
import org.rut.util.algorithm.support.SelectionSort;
9ICC2%j|
import org.rut.util.algorithm.support.ShellSort; ONx|c'0g
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/** IKJ~sw~AQ
* @author treeroot @G/':N
* @since 2006-2-2 F~Kd5-I@
* @version 1.0 )9,*s!)9
*/ cQ4TYr;?
public class SortUtil { ++KY+j.^
public final static int INSERT = 1; IBwquw+
public final static int BUBBLE = 2; =k4yWC5-
public final static int SELECTION = 3; niO(>
public final static int SHELL = 4; qZ!1>`B
public final static int QUICK = 5; nG#lrYZw
public final static int IMPROVED_QUICK = 6; Q*TxjE7K
public final static int MERGE = 7; D\Y)E#%,
public final static int IMPROVED_MERGE = 8; FNZB M
public final static int HEAP = 9; I3Sl>e(Z
2|k*rv}l
public static void sort(int[] data) { .js4)$W^
sort(data, IMPROVED_QUICK); 9X&Xs/B
} ^H+j;K{5,
private static String[] name={ *$(=I6b
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /p,D01Ws}(
}; CiP-Zh[gZ
]\nG1+ta
private static Sort[] impl=new Sort[]{ A>L(#lz#ek
new InsertSort(), @C=, >+D
new BubbleSort(), $"{V],:T
|
new SelectionSort(), ~H0~5v F
new ShellSort(), :C42yQAP
new QuickSort(), y? [*qnPj
new ImprovedQuickSort(), hoC}@8_
new MergeSort(), -<#n7b
new ImprovedMergeSort(), tYfhKJzGC
new HeapSort() yZ:|wxVY
}; '$)Wp_
Fc}wuW
public static String toString(int algorithm){ PqcuSb6
return name[algorithm-1]; #},]`"n\
} n#3y2,Ml
u2<:mu[|P
public static void sort(int[] data, int algorithm) { c7\bA7.
impl[algorithm-1].sort(data); kSNVI-Wzu
} $#4z>~0
wri[#D {
public static interface Sort { ]CC=
\ <
public void sort(int[] data); ~s^&*KaA
} v03~=(
+:&(Ag
public static void swap(int[] data, int i, int j) { 3|:uIoR{
int temp = data; Lu:!vTRmw
data = data[j]; glHag"(
data[j] = temp; *ep!gT*4
} 8Z3+S)6
} >mF`XbS