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。 cAqLE\h
插入排序: |&nS|2.'
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package org.rut.util.algorithm.support; C8:f_mJU
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import org.rut.util.algorithm.SortUtil; ]z;I_-
/** /?'FE 7Y
* @author treeroot #7$
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* @since 2006-2-2 mh{d8<Q2
* @version 1.0 /P3 <"?#k
*/ R)(T^V`{
public class InsertSort implements SortUtil.Sort{ :WS@=sZN
ufZDF=$7
/* (non-Javadoc) >`mVY=Hi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L>&t|T2
*/ D~fl JR
public void sort(int[] data) { b-?gw64#
int temp; sPQQ"|wU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )0W{]2
} xJvmhN/c
} L>NL:68yN
} |A9F\A->4
x8\?}UnB
} 5iw<>9X*
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冒泡排序: ~i{(<.he
Jk11fn;\>
package org.rut.util.algorithm.support; f=Gg9bnm3
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import org.rut.util.algorithm.SortUtil; y0.'?6k
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/** w"|L:8
* @author treeroot 1..+F0U
* @since 2006-2-2 a=1@*ID
* @version 1.0 8.=BaNU
*/ S-b/S5
public class BubbleSort implements SortUtil.Sort{ ?V.cOR`6
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/* (non-Javadoc) 8)3*6+D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cN6X#D
*/ EhvX)s
public void sort(int[] data) { 9c'xHO`
int temp; f:w?pE
for(int i=0;i for(int j=data.length-1;j>i;j--){ CL;}IBd a
if(data[j] SortUtil.swap(data,j,j-1); OU.6bmWy|
} ~2N"#b&J
} _pG-qK
} qLG&WB
} RFc v^Xf
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} IGQFtO/x
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选择排序: +oML&g-g_
gp?uHKsM
package org.rut.util.algorithm.support; @)M9IOR
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import org.rut.util.algorithm.SortUtil; 9};8?mucr
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/** $G+@_'
* @author treeroot EjR9JUu
* @since 2006-2-2 (D&3G;0tK
* @version 1.0 k FD;i
*/ )[IC?U:5I
public class SelectionSort implements SortUtil.Sort { <w9JRpFY
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/* &64h ;P<
* (non-Javadoc) S Lj!v&'
* iByf{ I>+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %E>Aw>]v
*/ djG*YM\B
public void sort(int[] data) { KC6.Fr{
int temp; }?i0
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for (int i = 0; i < data.length; i++) { `25yE/
int lowIndex = i; M h}m;NI
for (int j = data.length - 1; j > i; j--) { gO- _
if (data[j] < data[lowIndex]) { pa3{8x{9m
lowIndex = j; QO~P7r|A
} 7U"g3a)=
} 2- h{N
SortUtil.swap(data,i,lowIndex); q:0N<$63
} 783,s_
} >\#*P'y`d
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} C2I_%nU Z1
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Shell排序: &`r-.&Y
LA5(sp@O
package org.rut.util.algorithm.support; 0i>5<ej,f
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import org.rut.util.algorithm.SortUtil; "Gzz4D
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/** @Uvz8*b6
* @author treeroot tSUEZ62EY
* @since 2006-2-2 5Ln,{vsv
* @version 1.0 I;(L%TT `
*/ 1n8/r}q'H
public class ShellSort implements SortUtil.Sort{ [l??A3G
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/* (non-Javadoc) ?e4YGOe.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -@2iaQ(5a2
*/
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public void sort(int[] data) { k]|~>9eY]
for(int i=data.length/2;i>2;i/=2){ $8h%a
8I
for(int j=0;j insertSort(data,j,i); lfgq=8d
} /Cr%{'Pzk
} xLajso1g69
insertSort(data,0,1); o:'MpKm
} GL}]y -f
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/** }R2u@%n{
* @param data {dlXLx!B
* @param j ^uc=f2=>,
* @param i {}n^cq
*/ iWkWR"ysy
private void insertSort(int[] data, int start, int inc) { h,N?Ab'S
int temp; i1d'nxk6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {S)6;|ua'
} O=t_yy
} Ll't>)
} YkSl^j[DHs
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} &r/Mi%
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快速排序: T?0eVvM
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package org.rut.util.algorithm.support; vA{-{Q
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import org.rut.util.algorithm.SortUtil; T'9'G
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/** t3_O H^
* @author treeroot ;[DU%f
* @since 2006-2-2 zC!t;*8a
* @version 1.0 $h"\N$iSq
*/ 9cF[seE"0
public class QuickSort implements SortUtil.Sort{ 8TKnL\aar
>tr}|>
/* (non-Javadoc) cuITY^6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _TZRVa_
*/ tcI*a>
public void sort(int[] data) { (?c"$|^J
quickSort(data,0,data.length-1); Rhs/3O8k
} 7n<{tM
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; j,eo2HaL
file://swap Zu[su>\
SortUtil.swap(data,pivotIndex,j); _V6ukd"B~
b8UO,fY q
int k=partition(data,i-1,j,data[j]); #c!lS<z
SortUtil.swap(data,k,j); Lk8ek}o'
if((k-i)>1) quickSort(data,i,k-1); C&%_a~
if((j-k)>1) quickSort(data,k+1,j); cm+Es6;
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} Wac&b
/** XpHrt XD
* @param data va@Lz&sAE%
* @param i k4J+J.|
* @param j x 9fip-
* @return lL3U8}vn
*/ a1lh-2xX
private int partition(int[] data, int l, int r,int pivot) { T8$y[W-c
do{ A;M'LM- M
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u6JM]kR
SortUtil.swap(data,l,r); V)25$aKW7
} Svmy(w~m
while(l SortUtil.swap(data,l,r); Y$_B1_
return l; |Rk@hzM2S
} 0GeTSFj
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} GD$l||8
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改进后的快速排序: 46h<,na?,
qX{+oy5
package org.rut.util.algorithm.support; li.;IWb0+)
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import org.rut.util.algorithm.SortUtil; nNn:-
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/** ~9@UjQ^)F
* @author treeroot 6i/(5 nQ
* @since 2006-2-2 .ioEIs g
* @version 1.0 b]KBgZ
*/ R\[e!g*I
public class ImprovedQuickSort implements SortUtil.Sort { ~4'$yWG
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private static int MAX_STACK_SIZE=4096; 3!]rmZ-W
private static int THRESHOLD=10; xA*<0O\V
/* (non-Javadoc) > ~O.@|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tWcHb #
*/ JWxwJex
public void sort(int[] data) { gPPkT"
int[] stack=new int[MAX_STACK_SIZE]; ym1Y4,
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int top=-1; P&Vv/D
int pivot; nu%*'.
int pivotIndex,l,r; wibNQ`4k
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stack[++top]=0; [4)F f
stack[++top]=data.length-1; =I_'.b
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while(top>0){ tCt#%7J;a
int j=stack[top--]; +ZP7{%
int i=stack[top--]; i83OOV$1J
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pivotIndex=(i+j)/2; r~['VhI!;E
pivot=data[pivotIndex]; sW\!hW1*x
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SortUtil.swap(data,pivotIndex,j); ,ig/s2ZG6X
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file://partition Q~9^{sHZjP
l=i-1; `R^g U]Z,
r=j; p]c%f2E>d
do{ ;O,jUiQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fk-RV>yr
SortUtil.swap(data,l,r); 4*;MJ[|
} A04U /;
while(l SortUtil.swap(data,l,r); q)
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SortUtil.swap(data,l,j); !&E-}}<
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if((l-i)>THRESHOLD){ jPkn[W#
6
stack[++top]=i; aN3;`~{9
stack[++top]=l-1; ?a]mDx>xh
} )4 ;`^]F
if((j-l)>THRESHOLD){ +=)+'q]S
stack[++top]=l+1; ,V}WM%Km
stack[++top]=j; qH_Dc=~la
} K3uRs{l|
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} a 1*p*dM#
file://new InsertSort().sort(data); S+lqA-:
insertSort(data); "0TZTa1e
} !;'=iNOYR
/** uyx 2;f
* @param data dj%!I:Q>u
*/ <1!O1ab
private void insertSort(int[] data) { A3*!"3nU
int temp; X@FN|Rdh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qqU 64E
} hi[pVk~B)
} 5!9zI+S|=`
} Flb&B1
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} _o~nr]zx
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归并排序: Wc
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g9F?z2^
package org.rut.util.algorithm.support; #`s"WnP9'!
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import org.rut.util.algorithm.SortUtil; m#p'iU*va,
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/** >
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* @author treeroot Rf1x`wml
* @since 2006-2-2 akQ7K
* @version 1.0 }ad|g6i`
*/ ovV'VcUs
public class MergeSort implements SortUtil.Sort{ R G`1en
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/* (non-Javadoc) =tY T8Q;al
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Q>IrT
*/ IE~ |iQ?-
public void sort(int[] data) { >LuYHr
int[] temp=new int[data.length]; ~Cjn7
mergeSort(data,temp,0,data.length-1); a[TMDU;(/4
} T[j,UkgGo
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private void mergeSort(int[] data,int[] temp,int l,int r){ k VQ\1!
int mid=(l+r)/2; rrv%~giU
if(l==r) return ; vfo~27T{(
mergeSort(data,temp,l,mid); rVsJ`+L
mergeSort(data,temp,mid+1,r); e(G|;a
for(int i=l;i<=r;i++){ A5w6]: f2
temp=data; p()xz
} bN@
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int i1=l; Na Cy@
int i2=mid+1; u<&m]]*
for(int cur=l;cur<=r;cur++){ H>@+om
if(i1==mid+1) .%QXzIa3F
data[cur]=temp[i2++]; CJI~_3+K
else if(i2>r) W@!S%Y9
data[cur]=temp[i1++]; ;9g2?-svw
else if(temp[i1] data[cur]=temp[i1++]; OZ!^ak
else L8 @1THY
data[cur]=temp[i2++]; 3f;>" P}
} "
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} FxtI"g\0
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} VLN_w$iEq
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改进后的归并排序: #R
RRu2
:eLVC7'
package org.rut.util.algorithm.support; wec)Ctj+
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import org.rut.util.algorithm.SortUtil; 2f_:v6
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/** sn>~O4"
* @author treeroot }:#P)8/v>%
* @since 2006-2-2 WMP,\=6k0
* @version 1.0 ,6W>can
*/ S 6,.FYH
public class ImprovedMergeSort implements SortUtil.Sort { B?o7e<l[
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private static final int THRESHOLD = 10; BFW&2
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/* wH6aAV~1
* (non-Javadoc) A.w:h;7
* 5E_YEBO/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2dgd~
*/ !5?<% *
public void sort(int[] data) { *_g$MI
int[] temp=new int[data.length]; da~],MN
mergeSort(data,temp,0,data.length-1); 3{(/x1a,4
} ua `RJ
R_xRp&5
private void mergeSort(int[] data, int[] temp, int l, int r) { /|#fejPh
int i, j, k; HE_8(Ms;8
int mid = (l + r) / 2; Vs{|xG7WD
if (l == r) 5ms(Wd
return; G 9vpt M
if ((mid - l) >= THRESHOLD) G9@0@2aY8
mergeSort(data, temp, l, mid); @AuO`I@p=
else ?b5^
insertSort(data, l, mid - l + 1); sFTy(A/
if ((r - mid) > THRESHOLD) ;IM}|2zuN
mergeSort(data, temp, mid + 1, r); RY*U"G0#w
else qb` \)X]9
insertSort(data, mid + 1, r - mid); f'3$9x
VgS_s k
for (i = l; i <= mid; i++) { rk)`\=No
temp = data; dcWD(-
} y$R_.KbO
for (j = 1; j <= r - mid; j++) { ##4HYQ%E
temp[r - j + 1] = data[j + mid]; t<?,F
} eGbGw
int a = temp[l]; |IUWF%~^$+
int b = temp[r]; U|j`e5)
for (i = l, j = r, k = l; k <= r; k++) { "8zDbdK
if (a < b) {
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data[k] = temp[i++]; , SnSW-P
a = temp; G;XxBA
} else { _2 osV[e
data[k] = temp[j--]; N=g"(%
b = temp[j]; SOvF[,+
} `n?DU;,
} R
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} Ef13Q]9|
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/** CQDkFQq-dq
* @param data 1hNq8*|
* @param l *bpD`s
@
* @param i 6/dI6C!
*/ Tkgs]q79
private void insertSort(int[] data, int start, int len) { d4z/5Oa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )TM4R)r%)9
} 3%=~)7cF
} zT?D<XW>1
} DrK{}uM
} y Fq&8 x<X
;@E$}*3[>V
堆排序: LvYB7<zk>
-!]ZMi9
package org.rut.util.algorithm.support; ?p8_AL'RS
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import org.rut.util.algorithm.SortUtil; 5rZ
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/** WQO) =n
* @author treeroot G9<X_
* @since 2006-2-2 /fV;^=:8c
* @version 1.0 ?#UO./ "
*/ OprkR
public class HeapSort implements SortUtil.Sort{ OY@ %p}l
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/* (non-Javadoc) PXNh&N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WVvvI9
*/ 6<(.4a?
public void sort(int[] data) { fXQNHZ|4
MaxHeap h=new MaxHeap(); }U5yQ%N
h.init(data); W#3Q ^Z?
for(int i=0;i h.remove(); v^+Sh|z/
System.arraycopy(h.queue,1,data,0,data.length); "AGLVp.zT
} Bo%NFB;
q;)JISf.
private static class MaxHeap{ "OnGE$
-_eLf#3
void init(int[] data){ $5Ff1{
this.queue=new int[data.length+1]; ))'<_nD
for(int i=0;i queue[++size]=data; ~zNAbaC+>t
fixUp(size); XAL1|]S
} 0b(N^$js'
} K:30_l<
OX\F~+
private int size=0; ;q6Ki.D
"C0Q(dr/n
private int[] queue; GYUn6P
p,i[W.dy.'
public int get() { jPW#(3hoE
return queue[1]; d)f :)Ew
} "o}+Ciul
]}2ZttQ?
public void remove() { d <JM36j?
SortUtil.swap(queue,1,size--); 9j:"J` '
fixDown(1); <
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} C/6V9;U
file://fixdown :'*~uJrR
private void fixDown(int k) { 3y8G?LL/[7
int j; 9\JF`ff_
while ((j = k << 1) <= size) { r#]WI|
if (j < size %26amp;%26amp; queue[j] j++; (+y
if (queue[k]>queue[j]) file://不用交换 .z}~4BY
break; K~ehP[^
SortUtil.swap(queue,j,k); P;]F(in=
k = j; `(/w y
} s>n)B^64W
} Ng>h"H
private void fixUp(int k) { dQR-H7U
while (k > 1) { Qhcu>ra
int j = k >> 1; ?]Xpi3k
if (queue[j]>queue[k]) 2u*KM`fa`
break; rFYWs6
SortUtil.swap(queue,j,k); "y/?WQ>,3
k = j; PGV/ h
} qE3UO<FA
} %m$Sp47
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} a8Nh=^Py
_?0}<kQ&
} Ob&<]
u-G+ j)
SortUtil: bTs?!~q
yT9@!]^L
package org.rut.util.algorithm; Qtv&ijFC
i5?q,_
import org.rut.util.algorithm.support.BubbleSort; R>mmoG}MQ[
import org.rut.util.algorithm.support.HeapSort; h/hmlnOQl
import org.rut.util.algorithm.support.ImprovedMergeSort; [>5-$Y OT
import org.rut.util.algorithm.support.ImprovedQuickSort; $F+ L Ds
import org.rut.util.algorithm.support.InsertSort; |f_[\&<*
import org.rut.util.algorithm.support.MergeSort; A*P|e-&Q8
import org.rut.util.algorithm.support.QuickSort; t+T4-1 3a
import org.rut.util.algorithm.support.SelectionSort; dZ0vA\z|
import org.rut.util.algorithm.support.ShellSort; s
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O]Qd<%V'x
/** 3Xy-r=N. l
* @author treeroot DG ;_Vg
* @since 2006-2-2 /F'sb[
* @version 1.0 4s{~r
*/ (uZ&V7l
public class SortUtil { wLJ:\_Jaf
public final static int INSERT = 1; "J8vjr1/
public final static int BUBBLE = 2; 0Bi.6r
public final static int SELECTION = 3; MC:@U~}6
public final static int SHELL = 4; rJbf_]^
public final static int QUICK = 5; =\wxsL
public final static int IMPROVED_QUICK = 6; >!bJslWA
public final static int MERGE = 7; FOy|F-j
public final static int IMPROVED_MERGE = 8; >DZw
public final static int HEAP = 9; k:F9. j%*
kH7(@Pa
public static void sort(int[] data) { 3e;^/kf<9
sort(data, IMPROVED_QUICK); ]B3=lc"
} OGg># vj,s
private static String[] name={ po Vx8oO8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bU:EqW\( ^
}; -^h' >.
fnX`Q[b4\A
private static Sort[] impl=new Sort[]{ 6'G6<8>-
new InsertSort(), .|b$NM
new BubbleSort(), ZE=Sp=@)j
new SelectionSort(), l@+7:n4K0
new ShellSort(), JJ2_hVU
new QuickSort(), :hFIl0$,"3
new ImprovedQuickSort(), 4V i`* !
new MergeSort(), 1A G<$d5U|
new ImprovedMergeSort(), $ig0j`
new HeapSort() D" rK(
}; T)TfB(
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public static String toString(int algorithm){ $r8 ^0ZRr
return name[algorithm-1]; .e=:RkI,
} YS@ypzc/
Be=u&T:~
public static void sort(int[] data, int algorithm) { ^N;.cY
impl[algorithm-1].sort(data); dP<=BcH>f
} s ;oQS5Y
1o;J,dYu
public static interface Sort { xLWwYK
public void sort(int[] data); $oU*9}}Rn
} b TM{l.Aq3
%GA"GYL9'
public static void swap(int[] data, int i, int j) { evAMJ=
int temp = data; -Rd/Gx
data = data[j]; BJsz2t :0
data[j] = temp; W;L7SF g)
} C|).;V&
} 1&)?JZhg