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。 $zF%F.rln
插入排序: ]{|lGtK %
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package org.rut.util.algorithm.support; H@9QEj!Y
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import org.rut.util.algorithm.SortUtil; 4S4gK
/** pjQyN|KS
* @author treeroot ><xmw=
* @since 2006-2-2 bZ:xH48MY
* @version 1.0 F1BXu@~e(
*/ %yd(=%)fMB
public class InsertSort implements SortUtil.Sort{ y4$$*oai&
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/* (non-Javadoc) $F[+H Wf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4O.R=c2}7>
*/ \3"B$Sp|=
public void sort(int[] data) { Vw.)T/B_D
int temp; GB"Orm.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \m+=|
} #`!mQSK
} agE-,
} +H *6:
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} <Q"G
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冒泡排序: w%..*+P
JYmYX-
package org.rut.util.algorithm.support; [zXC\)&!
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import org.rut.util.algorithm.SortUtil; !^s -~`'\~
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/** @vXXf/
* @author treeroot ew~?&=
* @since 2006-2-2 b)M-q{
* @version 1.0 B}. :7,/0
*/ }fv7WhQ
public class BubbleSort implements SortUtil.Sort{ !uO@4]:Y
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/* (non-Javadoc) QgQclML1|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u;!h
*/ D~Ef%!&
public void sort(int[] data) { KUK.;gG*Z
int temp; pzoh9}bue
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]9)iBvQlj
if(data[j] SortUtil.swap(data,j,j-1); 'Bxj(LaV-
} 0
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} {2mF\A#.
} -84%6p2-
} ngmC~l*,
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} B~|]gd
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选择排序: #5kclu%L$
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package org.rut.util.algorithm.support; >;R`Q9s7
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import org.rut.util.algorithm.SortUtil; { Ie~MW
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/** IR$d?\O3
* @author treeroot c
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* @since 2006-2-2 -Eig#]Se3
* @version 1.0 =:xX~,qmv
*/ ARt{ 2|
public class SelectionSort implements SortUtil.Sort { !8T04988j
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/* _+nk3-yQw
* (non-Javadoc) v\MQ?VC
* :uB?h1|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ao=e{R)
*/ x?lRObHK
public void sort(int[] data) { `LLmdm 6i
int temp; _|cSXZ|
for (int i = 0; i < data.length; i++) { TQ:5@1aT
int lowIndex = i; k;`1Ia
for (int j = data.length - 1; j > i; j--) { 85)C7tJ-g
if (data[j] < data[lowIndex]) { 6<>1,wbq
lowIndex = j; }{j@q~w>$
} Mis B&Ok`k
} r@]`#PL
SortUtil.swap(data,i,lowIndex); ,x!r^YO=
} DpeJx
} FG+pR8aA$
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} =$^90Q,Z;
}* }F_Y+
Shell排序: Z2`M8xEiH
Yy 0" G
package org.rut.util.algorithm.support; =+Odu
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import org.rut.util.algorithm.SortUtil; S)wP];]`K
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/** +boL?Ix+
* @author treeroot d$x vEm
* @since 2006-2-2 cYe2a"
* @version 1.0 9}a$0H
h
*/ ]\A=[T^
public class ShellSort implements SortUtil.Sort{ ]!P8 {xmb@
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/* (non-Javadoc) "S6";G^I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V|B4lGS&
*/ 64mD%URT
public void sort(int[] data) { OIpT9
for(int i=data.length/2;i>2;i/=2){ \'[tfSB
for(int j=0;j insertSort(data,j,i); ~@PD\
} [7HBn
} Vy[xu$y
insertSort(data,0,1); (ER9.k2
} }F/w34+;
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}@^Gk
/** ~_"V7
* @param data [>pBz3fn,
* @param j @_$$'XA7
* @param i IHi[3xf<
*/ @Lf&[_
private void insertSort(int[] data, int start, int inc) { 3{t[>O;
int temp; ^'M^0'_"v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,dK)I1"C
} ~|Ln9f-g
} , .~k
} _[rQt8zn
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} j<~T:Tk
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快速排序: xyM|q9Gf@
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package org.rut.util.algorithm.support; &Wb"/Hn2
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import org.rut.util.algorithm.SortUtil; .U@u |
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/**
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* @author treeroot );JWrkpz
* @since 2006-2-2
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* @version 1.0 p%sizn
*/ %kop's&?C
public class QuickSort implements SortUtil.Sort{ Iy4%,8C]g
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/* (non-Javadoc) EmrkaV-?k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LL
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*/ .zt&HI.F
public void sort(int[] data) { [xrsa!$
quickSort(data,0,data.length-1); ^xNzppz`]C
} [
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private void quickSort(int[] data,int i,int j){ yhbU;qEG9
int pivotIndex=(i+j)/2; Jq(;BJ90R
file://swap PX/{!_mM
SortUtil.swap(data,pivotIndex,j); Z'2AsT
+^esL9RG:
int k=partition(data,i-1,j,data[j]); X0^@E
SortUtil.swap(data,k,j); Ri_2@U-
if((k-i)>1) quickSort(data,i,k-1); ~CV.Ci.dG
if((j-k)>1) quickSort(data,k+1,j); ru 9@|FgAE
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} (7b9irL&cn
/** G'}N ?8s1
* @param data dL'oKh,
* @param i |?{V-L
* @param j d_pIB@J
* @return .*9u_2<
*/ /ILd|j(e
private int partition(int[] data, int l, int r,int pivot) { eIF6f&
F
do{ Gds(.]_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [?9 `x-Q
SortUtil.swap(data,l,r); }i^|.VZZ
} :2==7u7v?
while(l SortUtil.swap(data,l,r); ^t7u4w!
return l; B|"i`{>
} hF@%k
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} =fnBE`Uc
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改进后的快速排序: (.@pe Hu)#
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package org.rut.util.algorithm.support; -2[4 @
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import org.rut.util.algorithm.SortUtil; S#8)N`
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/** &ck}3\sQ
* @author treeroot e/:? 9
* @since 2006-2-2 hI*v)c
* @version 1.0 )~R[aXkvY
*/ Cx/J_Ro#
public class ImprovedQuickSort implements SortUtil.Sort { R?:Q=7K
c;X,-Q9
private static int MAX_STACK_SIZE=4096; (2>q
private static int THRESHOLD=10; vWESu4W`L
/* (non-Javadoc) &QfEDDJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,'`yh|}G\
*/ 'V:MppQVZ.
public void sort(int[] data) { 612,J
int[] stack=new int[MAX_STACK_SIZE]; F$
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int top=-1; k]r4b`x`
int pivot; .0xk},
int pivotIndex,l,r; cf,6";8
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stack[++top]=0; e<1Ewml(]
stack[++top]=data.length-1; ?G',Qtz<K
tl!dRV92
while(top>0){ P%l?C?L
int j=stack[top--]; PcT]
int i=stack[top--]; `f&::>5tD
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pivotIndex=(i+j)/2; =0EKrG
pivot=data[pivotIndex]; O9By5j 4
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SortUtil.swap(data,pivotIndex,j); SZr c-f_
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file://partition [s]$&
l=i-1; :fL7"\
pf~
r=j; >}~[ew
do{ 1irSI,j%z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]nRf%Vi8g
SortUtil.swap(data,l,r); 57;0,k5Gy
} M_%KhK
while(l SortUtil.swap(data,l,r); hLZfArq}
SortUtil.swap(data,l,j); A_U=`M=-
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if((l-i)>THRESHOLD){ F4T!&E%6
stack[++top]=i; D-C]0Jf3
stack[++top]=l-1; B1~`*~@
} 8g_kZ^<[
if((j-l)>THRESHOLD){ ^8,prxaok
stack[++top]=l+1; %au>D
stack[++top]=j; O-UA2?N@j
} ;DnUeE8
vI(LIfe;
} }2RbX,0l9
file://new InsertSort().sort(data); E+XS7':I
insertSort(data); &gS-.{w "
} N.z2eo
/** _)= e`9%
* @param data mCg^Y)Q
*/ 'bM=
private void insertSort(int[] data) { aLm~.@Q
int temp; OwNM`xSa|\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ySiZ@i4
} YfT
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} Z>y6[o
} b~tu;:
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} __tA(uA
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归并排序: !^MwE]
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package org.rut.util.algorithm.support; n]4Elrxx
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import org.rut.util.algorithm.SortUtil; B;8Zl m9
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/**
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* @author treeroot #P}n+w_@
* @since 2006-2-2 |gxPuAXa)
* @version 1.0 tF/Ni*\^rV
*/ ;g#nGs>
public class MergeSort implements SortUtil.Sort{ 7w9'xY
tx<^PV2
/* (non-Javadoc) PDS( /x&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7@gH{p1
*/ \l3z<\
public void sort(int[] data) { =d"5kDK-m
int[] temp=new int[data.length]; LD?\gK"
mergeSort(data,temp,0,data.length-1); )mN/e+/Lu
} 7\g#'#K
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private void mergeSort(int[] data,int[] temp,int l,int r){ S`b!sT-sD
int mid=(l+r)/2; Yh!k uS#<
if(l==r) return ; Y&,}q_Z:
mergeSort(data,temp,l,mid); d42Y` Wu
mergeSort(data,temp,mid+1,r); uc"%uc'
for(int i=l;i<=r;i++){ Ue;Z)}
temp=data; a;;
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} 9\Ff z&
int i1=l; V73/q
int i2=mid+1; PeiRe
for(int cur=l;cur<=r;cur++){ *mj=kJ7(
if(i1==mid+1) 5-fASN.Lx
data[cur]=temp[i2++]; |dHtv 6I
else if(i2>r) 9wf"5c
data[cur]=temp[i1++]; Zi]E!Tgn
else if(temp[i1] data[cur]=temp[i1++]; Tzjv-9^V
else +Z_VF30pa
data[cur]=temp[i2++]; alzdYiGf
} tXrKC
} 58HAl_8W
=IX-n$d`>
} J{a9pr6
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改进后的归并排序: JBc*m
*wJz0ex7R/
package org.rut.util.algorithm.support; _(:$
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import org.rut.util.algorithm.SortUtil; U&*%KPy`
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/** VR"le&'z"
* @author treeroot \X(*JNQ
* @since 2006-2-2 SzeY?04zj:
* @version 1.0 T?A3f]U
*/ aYk: CYQ
public class ImprovedMergeSort implements SortUtil.Sort { A+H8\ew2,
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private static final int THRESHOLD = 10; E%8uQ2p(
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/* l9j=;h
* (non-Javadoc) s 8K.A~5 w
* *(vh |
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [h
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*/ 862rol
public void sort(int[] data) { ]i,o+xBKH
int[] temp=new int[data.length]; @C=gMn.E
mergeSort(data,temp,0,data.length-1); vAop#V
} AH'3
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private void mergeSort(int[] data, int[] temp, int l, int r) { 3
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int i, j, k; RRQv<x
int mid = (l + r) / 2; Bnwq!i!M
if (l == r) JP( tf+
return; ;C1#[U1Uy
if ((mid - l) >= THRESHOLD) *m>[\)
mergeSort(data, temp, l, mid); ^gyI-S(;
else BaP'y8dVN
insertSort(data, l, mid - l + 1); tG9C(D`G
if ((r - mid) > THRESHOLD) K3=0D!D q
mergeSort(data, temp, mid + 1, r); BL>~~
else d+]= l+&
insertSort(data, mid + 1, r - mid); QH7 GEj]
I} Q+{/?/
for (i = l; i <= mid; i++) { \AoqOC2u
temp = data; Cq<Lj
} ra^%__N}
for (j = 1; j <= r - mid; j++) { Ax=)J{4v
temp[r - j + 1] = data[j + mid]; }z9v*C
} @}PX:*c
int a = temp[l]; eAP
8!
int b = temp[r]; {=&({ cS
for (i = l, j = r, k = l; k <= r; k++) { uxKO"
if (a < b) { Z'5&N5hx
data[k] = temp[i++]; s7:_!Nd@8
a = temp; y>h9:q|
} else { pNQ7uy
data[k] = temp[j--]; /D|q-`*K
b = temp[j]; s]A8C^;c
} [%6)
} pH3\X
cn
} #M#$2Vt
x)$0Nr62D
/** t3^`:T\
* @param data M5:*aCN6P
* @param l jVoD9H
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* @param i iY,oaC~?"N
*/ qZV|}M>P)
private void insertSort(int[] data, int start, int len) { j}tGcFwvSN
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^ )!eiM
} '+iLW~
} (IjM
} _p9"MU&}
} b9T6JS j
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堆排序: :#n>Q1}x
Tw*p^rU
package org.rut.util.algorithm.support; *$;Zk!sEF
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import org.rut.util.algorithm.SortUtil; {(Mmv[y
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/** z_KCG2=5
* @author treeroot DMp@B]>
* @since 2006-2-2 \4<|QE
* @version 1.0 rp1+K4]P
*/ >XiT[Ru
public class HeapSort implements SortUtil.Sort{ 2w+4B4
s?9Y3]&+&M
/* (non-Javadoc) #k>A,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L>7@!/9L
*/ }1Mf0S
public void sort(int[] data) { \x4:i\Fx@
MaxHeap h=new MaxHeap(); D Vg$rm`
h.init(data); ?Oy0p8
for(int i=0;i h.remove(); cCx{
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System.arraycopy(h.queue,1,data,0,data.length); ,-(D(J;}1
} 7D 3-/_ v
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private static class MaxHeap{ {=gJGP/}_
./'d^9{
void init(int[] data){ 5X5UUdTM
this.queue=new int[data.length+1]; @y * TVy
for(int i=0;i queue[++size]=data; rHOhi|+
fixUp(size); `e3$jy@
} JwWxM3(%t
} Y8lZ]IB
SH8zkAA7u}
private int size=0; B#5[PX
FK-q-PKO#.
private int[] queue; $XkO\6kh
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public int get() { V=1zk-XC
return queue[1]; |:2B )X
} fWri7|"0h
<_=O0 t|6
public void remove() { c1y+kvv
SortUtil.swap(queue,1,size--); x7i<dg&
fixDown(1); BE~-0g$W
} _]D
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file://fixdown !
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private void fixDown(int k) { D8Mq '$-
int j; 9pS:#hg
while ((j = k << 1) <= size) { i-@V
if (j < size %26amp;%26amp; queue[j] j++; R@_3?Z!W=
if (queue[k]>queue[j]) file://不用交换 sD{Wc%5
break; kw2d<I$]
SortUtil.swap(queue,j,k); `2x. -
k = j; k:@N6K/$P^
} r[GH#vF;7
} :kwDa
a
private void fixUp(int k) { .J+F
HG'
while (k > 1) { kFyp;=d:K
int j = k >> 1; Lg#(?tMp,'
if (queue[j]>queue[k]) {7%HK2='
break; >@4AxV\
SortUtil.swap(queue,j,k); 3kF+wifsz
k = j; R1%J6wZq
} Q%J,:J
} A9"!=/~
^\J-LU|"B
} GY0OVAW6'c
9zCuVUcd$.
} 1Qz@
G^dzE/:
SortUtil: P7/Xh3
E?BF8t_fTE
package org.rut.util.algorithm; hy$VG%b;#
f4+wP/n&
import org.rut.util.algorithm.support.BubbleSort; m^TN6/])
import org.rut.util.algorithm.support.HeapSort; eT(X Ri0
import org.rut.util.algorithm.support.ImprovedMergeSort; Odh r=Hs
import org.rut.util.algorithm.support.ImprovedQuickSort; _RZ"WA^[
import org.rut.util.algorithm.support.InsertSort; Iu >4+6
import org.rut.util.algorithm.support.MergeSort; W5:fY>7
import org.rut.util.algorithm.support.QuickSort; ,7k1n{C)
import org.rut.util.algorithm.support.SelectionSort; aU[!*n 4Ux
import org.rut.util.algorithm.support.ShellSort; rwgj]
Z ZCm438
/** R1<$VR
* @author treeroot ^~@3X[No
* @since 2006-2-2 ;<GxonIV
* @version 1.0 p1HbD`ST
*/ F8Mf,jnPs
public class SortUtil { FS!)KxC/-
public final static int INSERT = 1; gm!sLZ!X
public final static int BUBBLE = 2; 8.I3%u
public final static int SELECTION = 3; 3=} P l,
public final static int SHELL = 4; }Ujgd2(U
public final static int QUICK = 5; ('\sUZ+5
public final static int IMPROVED_QUICK = 6; |R!ozlL{}
public final static int MERGE = 7; k9:|CEP
public final static int IMPROVED_MERGE = 8; 49}WJC7
)
public final static int HEAP = 9; y*US^HJOZ
, `EOJ"|
public static void sort(int[] data) { C-h?#/#?y
sort(data, IMPROVED_QUICK); zfg+gd)Z
} 8IBr#+0
private static String[] name={ ib!TXWq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A:yql`&s
}; h.l.da1#
y
c 8h}`
private static Sort[] impl=new Sort[]{ ,\aLv
new InsertSort(), eQn[
new BubbleSort(), ?cKTeGrS
new SelectionSort(), 0)
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new ShellSort(), Y"yrc0'&T
new QuickSort(), IA]wO%c
new ImprovedQuickSort(), 3Lq9pdM>2@
new MergeSort(), ux|
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new ImprovedMergeSort(), ^=1u2YdVw
new HeapSort() -o!bO9vC
}; U0{)goN.
%^nNt:N0
public static String toString(int algorithm){ Em5,Zr_
return name[algorithm-1]; u%I%4 gM
} #e,TS`"eD
kp}[nehF
public static void sort(int[] data, int algorithm) { s@y;b0$gk
impl[algorithm-1].sort(data); g#7Q-n3^
} }&2,!;"">3
v9S=$Aj
public static interface Sort { `8Ych@f]
public void sort(int[] data); uwZ,l-6T
} <o*b6m%
6-J}ZfGj
public static void swap(int[] data, int i, int j) { y'>JT/Q5
int temp = data; o8hE.pf&
data = data[j]; 6?C';1
data[j] = temp; dG]B-(WTC
} ?K:.Pa
} c=9A d