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。 gkDB8,C<j
插入排序:
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package org.rut.util.algorithm.support; {q:6;yzxl
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import org.rut.util.algorithm.SortUtil; ^]K_k7`I
/** ,#nyEE
* @author treeroot 5-*/wKjLz
* @since 2006-2-2 q.*k
J/L
* @version 1.0 _G@)Bj^*
*/ [:Sl^ Z&6M
public class InsertSort implements SortUtil.Sort{ -GH>12YP
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/* (non-Javadoc) dW6sA65<Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MGK%F#PM
*/ T)MKhK9\Ab
public void sort(int[] data) { k*J0K=U|
int temp; d-y8c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V!uW\i/
} nGq{+
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} O|d"0P
} ;tlvf?0!
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}
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冒泡排序: voiWf?X
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package org.rut.util.algorithm.support; f]Xh7m(Gh
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import org.rut.util.algorithm.SortUtil; `fS$@{YI_
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/** )1N~-VuT
* @author treeroot Dr)B0]KG
* @since 2006-2-2 ',P$m&z
* @version 1.0 OQ&l/|{O0?
*/ 0.+MlyA
public class BubbleSort implements SortUtil.Sort{ G
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/* (non-Javadoc) -e(e;e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `p#tx.o
*/ Zcjh
public void sort(int[] data) { lxf+$Z`~:
int temp; *lc|iq\
for(int i=0;i for(int j=data.length-1;j>i;j--){ u^, eHO
if(data[j] SortUtil.swap(data,j,j-1); DZ"'GQSg
} W^k95%zBM
} fS?}(7
} \ ,D>zF
} a]]eQ(xQ
3?5JY;}h>"
} 6Z.Fyte
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选择排序: tnE),
FF #T"y0Y
package org.rut.util.algorithm.support; k'QI`@l&l
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import org.rut.util.algorithm.SortUtil; nvbzC tC
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/** TXdo,DPv7
* @author treeroot {.eo?dQ
* @since 2006-2-2 *O_>3Hgl
* @version 1.0 >jz9o9?8
*/ *+(rQ";x
public class SelectionSort implements SortUtil.Sort { %tB7 &%ut
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/* `3g5n:"g\
* (non-Javadoc) 8wV`mdKN
* FRa>cf4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B`|f"+.
*/ |P@N}P@
public void sort(int[] data) { ,R.rxoO
int temp; gu|=uW K
for (int i = 0; i < data.length; i++) { Wn2'uZ5If
int lowIndex = i; BMug7xl"
for (int j = data.length - 1; j > i; j--) { -^+fZBU;
if (data[j] < data[lowIndex]) { 0CO@@`~4
lowIndex = j; 9HB+4q[
} xpX<iT>5u
} ~y{_NgMo
SortUtil.swap(data,i,lowIndex); LAkBf
} E5!vw@,
} j"K^zh
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} }{y)a<`
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Shell排序: OClG dFJ|
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package org.rut.util.algorithm.support; aVCPaYe^
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import org.rut.util.algorithm.SortUtil; s]]lB018O\
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7
/** ?VlGTMaS+
* @author treeroot ~UJ.A<>Fh
* @since 2006-2-2 HjIIhl?UY
* @version 1.0 ,OWk[0/
*/ UB/"&I uo
public class ShellSort implements SortUtil.Sort{ h4jo<yp\
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/* (non-Javadoc) elAWQE us
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XLC9B3Jt
*/ )9^)t
public void sort(int[] data) { Z#.1p'3qm1
for(int i=data.length/2;i>2;i/=2){ ,Kl:4 Tv
for(int j=0;j insertSort(data,j,i); <rtKPlb//
} /jNvHo^B
} ! ui
insertSort(data,0,1); ^3[_4av
} 6se8`[
*?BY+0
/** ,`JYFh M
* @param data sC.b'1P
* @param j Q7rBc
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* @param i qCg<g
*/ u$yXuFj/
private void insertSort(int[] data, int start, int inc) { Vbt!, 2_)
int temp; ^R=`<jx
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;89kL]
} 8T1zL.u>q
} VcGl8~#9
} vn+XY=Qnr
gUNhN1=
} G &xtL
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快速排序: _aR{B-E
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package org.rut.util.algorithm.support; WW+xU0
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import org.rut.util.algorithm.SortUtil; Ie(i1?`A8
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/** a M9v
* @author treeroot u8T@W}FX
* @since 2006-2-2 uLafO=Q
* @version 1.0 w%.hALN5-C
*/ X8VBs#tLE
public class QuickSort implements SortUtil.Sort{ XjF@kQeM=
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/* (non-Javadoc) "Yh;3tI4*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GQ;0KIN
*/ n1J u=C
public void sort(int[] data) { kh9'W<tE
quickSort(data,0,data.length-1); u Jqv@GFv
} &EqLF
private void quickSort(int[] data,int i,int j){ ZA+dtEE=f9
int pivotIndex=(i+j)/2; uG^CyM>R`
file://swap ^#d\HI
SortUtil.swap(data,pivotIndex,j); (B>/LsTu
'g!T${
int k=partition(data,i-1,j,data[j]); #h?IoB7
SortUtil.swap(data,k,j); q)i %*IY
if((k-i)>1) quickSort(data,i,k-1); ?D6uviQg
if((j-k)>1) quickSort(data,k+1,j); 6LBdTnzUd
jd](m:eG
} \= v.$u"c
/** Hl,{4%]
* @param data >=[uLY[aK
* @param i S[1<Qrv]
* @param j !gve]>M
* @return !\X9$4po@
*/ x=t(#R m
private int partition(int[] data, int l, int r,int pivot) { qtExd~E
do{ C<
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2
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SortUtil.swap(data,l,r); 6@s!J8!
} f^FFn32u
while(l SortUtil.swap(data,l,r); 7pm'b,J<
return l; r }lGcG)
} N[po)}hp
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} SI=$s>1
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改进后的快速排序: <Z]#vrq
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package org.rut.util.algorithm.support; g}s$s}
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import org.rut.util.algorithm.SortUtil; )O]6dd
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/** Qs elW]
* @author treeroot j|t=%*
* @since 2006-2-2 3[ xdls
* @version 1.0
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*/ ~Q&J\'GQH
public class ImprovedQuickSort implements SortUtil.Sort { HU'Mi8xxy
M76p=*
private static int MAX_STACK_SIZE=4096; 5EFt0?G
private static int THRESHOLD=10; 2#>;cn\
/* (non-Javadoc) hZx&j{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |}z)>E
*/ 2aj1IBnz6/
public void sort(int[] data) { 8:$h&aBI
int[] stack=new int[MAX_STACK_SIZE]; t(u2%R4<d
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int top=-1; vN Bg&m
int pivot; |NuMDVd+s
int pivotIndex,l,r; ~[HzGm%
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stack[++top]=0; <rBW6o7
stack[++top]=data.length-1; ij
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while(top>0){ g&s.
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int j=stack[top--]; N1$u@P{
int i=stack[top--]; ,^:{!?v
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pivotIndex=(i+j)/2; d=D-s
pivot=data[pivotIndex]; k,:W]KD
=Kd'(ct
SortUtil.swap(data,pivotIndex,j); +<a\0FsD
jE*{^+n
file://partition 7*l$i/!
l=i-1; z`zz8hK.
r=j; geme_
do{ lU{)%4e`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n 9B5D:.G
SortUtil.swap(data,l,r); fpR|+`k
} PVI Oe}N
while(l SortUtil.swap(data,l,r); /65YHXg,
SortUtil.swap(data,l,j); -G(me"Cu
6:zPWJB
if((l-i)>THRESHOLD){ [E1qv;
stack[++top]=i; #L*\ ^ c
stack[++top]=l-1; Lc{AB!Br
} w:5?ofC
if((j-l)>THRESHOLD){ aJ'Fn
stack[++top]=l+1; 32wtN8kx
stack[++top]=j; #AJW-+1g.=
} =I# pXL
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} 'H530Y\
file://new InsertSort().sort(data); |0n )U(
insertSort(data); 6
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} g(@F`W[
/** W'C>Fn}lO?
* @param data 7hHID>,o9%
*/ 0V:H/qu8>
private void insertSort(int[] data) { |'h(S|
int temp; L/i'6(="
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z@,pT"rb
} 1}d
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} Va8
}JD
} UY3)6}g6
LCivZ0?|X
} v\:AOY'
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归并排序: &<t%u[3
}j/\OY _&
package org.rut.util.algorithm.support; Rw?w7?I
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import org.rut.util.algorithm.SortUtil; K(+=V)'Dz
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/** |{#St-!-7
* @author treeroot Ok!P~2J
* @since 2006-2-2 L]=]/>jQ6
* @version 1.0 YK/? mj1x
*/ Qc7*p]E&
public class MergeSort implements SortUtil.Sort{ [+\He/M6
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/* (non-Javadoc) A%^?z.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *j3U+HV
*/ @NM0ILE
public void sort(int[] data) { p/{%%30ke
int[] temp=new int[data.length]; In?rQiD9
mergeSort(data,temp,0,data.length-1); ^T&{ORWz
} WsHDIp
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private void mergeSort(int[] data,int[] temp,int l,int r){ %r^tZ ;;l
int mid=(l+r)/2; .#&)%}GC
if(l==r) return ; tj;47UtH
mergeSort(data,temp,l,mid); y4kn2Mw;
mergeSort(data,temp,mid+1,r); 9C7Npf?~M
for(int i=l;i<=r;i++){ QD-\'Bp/X
temp=data; /nO_e
} TzKM~a#
int i1=l; && ]ix3
int i2=mid+1; WSozDNF!'f
for(int cur=l;cur<=r;cur++){ lV'?X%
if(i1==mid+1) 1K/HVj+'.
data[cur]=temp[i2++]; ?8O5%IrJ
else if(i2>r) g:!U,<C^a
data[cur]=temp[i1++]; (-S^L'v62v
else if(temp[i1] data[cur]=temp[i1++]; <-1:o*8:}
else U6-47m0%
data[cur]=temp[i2++]; Mi.#x_
} ;`
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} k+"];
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} ;r@=[h
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改进后的归并排序: ,1I-%6L
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package org.rut.util.algorithm.support; LVUA"'6V
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import org.rut.util.algorithm.SortUtil; vd%AV(]<LJ
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/** r5gqRh}+
* @author treeroot '-"[>`[q
* @since 2006-2-2 Z`kVyuQ
* @version 1.0 oaj.5hM
*/ NnAIL;WS
public class ImprovedMergeSort implements SortUtil.Sort { E:qh}wY
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private static final int THRESHOLD = 10; !>F70
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/* ^x0N]/
* (non-Javadoc) 6|=]i-8
* l$5nv5r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qb;b.P?~D$
*/ Ys.GBSlHG
public void sort(int[] data) { .-YE(}^
int[] temp=new int[data.length]; @KM?agtlbl
mergeSort(data,temp,0,data.length-1); f
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} GJWGT`"
w7`pbcY,
private void mergeSort(int[] data, int[] temp, int l, int r) { S0StC$$1
int i, j, k; Ab[o~X"
int mid = (l + r) / 2; b"\lF1Nf&o
if (l == r) fTpG>*{p
return; jUD^]Qs
if ((mid - l) >= THRESHOLD) vVMoCG"f
mergeSort(data, temp, l, mid); F=Xb_Gd`
else 3rK\
f4'
insertSort(data, l, mid - l + 1); 8GBKFNR8
if ((r - mid) > THRESHOLD) E q4tcZ
mergeSort(data, temp, mid + 1, r); #6a!OQj
else l[~$9C'ji
insertSort(data, mid + 1, r - mid); sPc}hG+N
vw>(JCR
for (i = l; i <= mid; i++) { ktPM66`b
temp = data; z4
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} .<vXj QE
for (j = 1; j <= r - mid; j++) { _#H d2h
temp[r - j + 1] = data[j + mid]; >NPK;Vu
} .,6o):
int a = temp[l]; HT/!+#W.
int b = temp[r]; ,8zJD&HMx
for (i = l, j = r, k = l; k <= r; k++) { i%!<9D~n
if (a < b) { 4IW
fp&Q!
data[k] = temp[i++]; 3XB`|\:
a = temp; t;Z9p7rk
} else { +wz1kPRs
data[k] = temp[j--]; 7:g_:}m
b = temp[j]; [*u\ S
} LL);Ym9d
} $S' TW3
} Lios1|5
..Dm@m}
/** /&\V6=jA1
* @param data Pm#/j;
* @param l )a0l:jEOc
* @param i ;HAvor=?
*/ Q\zaa9P
private void insertSort(int[] data, int start, int len) { kIa16m
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9:g A0Z
} _1RvK? ;.{
} E5A"sB
} 3f$n8>mq
} D5xQ
CH(Y.Kj-
堆排序: M]X!D7
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package org.rut.util.algorithm.support; EKO'S+~
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import org.rut.util.algorithm.SortUtil; ~)#E?:h5
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/** ">!pos`<C
* @author treeroot =c 9nC;C
* @since 2006-2-2 '4 d4i
* @version 1.0 ysi=}+F.
*/ IAzFwlO9
public class HeapSort implements SortUtil.Sort{ p2(ha3PW
fJ\?+,
/* (non-Javadoc) ] 7[#K^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k?HdW(HA
*/ q|%+?j(
public void sort(int[] data) { J<H]vs
MaxHeap h=new MaxHeap(); :~R a}
h.init(data); Y,L[0%
for(int i=0;i h.remove(); X]9<1[f
System.arraycopy(h.queue,1,data,0,data.length); lH?jqp
} q {}5wM
t$,G%micj
private static class MaxHeap{ 4Th?q{X
%}H
2
void init(int[] data){ 6:S,
{@G
this.queue=new int[data.length+1]; MCTJ^ g"D
for(int i=0;i queue[++size]=data; i._RMl5zg
fixUp(size); Fs~*-R$
} x>mI$K(6M
} wQhu U
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private int size=0; /~s<@<1!X
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private int[] queue; \:s%;s51
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public int get() { d 4tL
return queue[1]; >Vx_Xv`Jwb
} ]v5/K
)uAY_()/
public void remove() { DazoY&AWE
SortUtil.swap(queue,1,size--); X0+E!~X$zM
fixDown(1); AH/^v;-
} GK-P6d
file://fixdown hC8WRxEGq
private void fixDown(int k) { 8a@k6OZ
int j; OY(CB(2N
while ((j = k << 1) <= size) { <K&A/Ue
if (j < size %26amp;%26amp; queue[j] j++; ^HR8.9^[1u
if (queue[k]>queue[j]) file://不用交换 {[:C_Up)f
break; raOuD3
SortUtil.swap(queue,j,k); N LQ".mM+
k = j; f U=P$s
} AfhJ6cSIE
} aaf}AIL.
private void fixUp(int k) { f*"T]AX0
while (k > 1) { M `q|GY
int j = k >> 1; XM+.Hel
if (queue[j]>queue[k]) i"n_oO
break; 6Q>:vQ+E
SortUtil.swap(queue,j,k); oV['%Z'
k = j; tA4Ra,-c
} n6,YA2yZO
} vy5Fw&?"
!^y;|9?O
} -3?
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KyT=:f
V
} Q5dqn"?
P-[})Z=
SortUtil: !pRu?5
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package org.rut.util.algorithm; 2V%z=
VHqoa>U,*
import org.rut.util.algorithm.support.BubbleSort; 7neJV
import org.rut.util.algorithm.support.HeapSort; ct|0zl~
import org.rut.util.algorithm.support.ImprovedMergeSort; gloG_*W
import org.rut.util.algorithm.support.ImprovedQuickSort; |uz<)
import org.rut.util.algorithm.support.InsertSort; <Qv/#
k
import org.rut.util.algorithm.support.MergeSort; \reVA$M[
import org.rut.util.algorithm.support.QuickSort; W;R6+@I[
import org.rut.util.algorithm.support.SelectionSort; XNx$^I=
import org.rut.util.algorithm.support.ShellSort; EUI*:JU-
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/** '?m2|9~
* @author treeroot ipMSMk7gx
* @since 2006-2-2 - |DWPU!"
* @version 1.0 5tkKd4VfL
*/ PN9vg9'
public class SortUtil { KC; o
public final static int INSERT = 1; [ /*;}NUv
public final static int BUBBLE = 2; ;Qq_
public final static int SELECTION = 3; 6RxI9{ry
public final static int SHELL = 4; C[%&;\3S@
public final static int QUICK = 5; Sn'!Nq>
public final static int IMPROVED_QUICK = 6; 6y
Muj<L
public final static int MERGE = 7; '3^ qW
public final static int IMPROVED_MERGE = 8; RAhDSDf
public final static int HEAP = 9; vf>d{F^rv
Bi;a~qE
public static void sort(int[] data) { }OnU32P
sort(data, IMPROVED_QUICK); `_GCS,/t
} bcT_YFLQ
private static String[] name={ YWd2bRb
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `)]W~
}; D9P,[:"
:,v(lq
private static Sort[] impl=new Sort[]{ v,Z]Vqk
new InsertSort(), (ot56`,k
new BubbleSort(), Z/: yYSq
new SelectionSort(), E Lq1
new ShellSort(), ;c]O *\/
new QuickSort(), k0PwAt)65
new ImprovedQuickSort(), " v
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new MergeSort(), $ eL-fg
new ImprovedMergeSort(), 1TA!9cz0Z
new HeapSort() G8w @C
}; mYJ8O$
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public static String toString(int algorithm){ jCtk3No
return name[algorithm-1]; H'k~;
} Jpp-3i.F#
'>1M~B
public static void sort(int[] data, int algorithm) { Z)~?foe'
impl[algorithm-1].sort(data); OOIp)=4
} &,PA+#
Z>3~n
public static interface Sort { [ywF!#'){
public void sort(int[] data); Hr}"g@ <
} WhH60/`
5"3`ss<m
public static void swap(int[] data, int i, int j) { I+kL;YdS
int temp = data; iKu3'jZ/O
data = data[j]; tFn[U#'
data[j] = temp; =Oh$pZRymu
} nXfz@q
} O,^s)>c