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。 r~TT c)2
插入排序: A>?fbY2n
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package org.rut.util.algorithm.support; L`#+ZLo
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import org.rut.util.algorithm.SortUtil; a:fHTU=\p
/** A=$oYBB
* @author treeroot W)#`4a^xj7
* @since 2006-2-2 Y!L jy
[/
* @version 1.0 ?Z=v&d[o)
*/ VC.?]'OqD
public class InsertSort implements SortUtil.Sort{ JvDsr0]\#
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/* (non-Javadoc) HZ}*o%O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gY9"!IVe+
*/ l;.BlHyu
public void sort(int[] data) { /K^cU;E,
int temp; (Y>MsqwWfC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xR:h^S^W ~
} ueR42J%s
} .bE,Q9:
} ?@1'WD t
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} P5>CSWy%
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冒泡排序: tX251S
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package org.rut.util.algorithm.support; x}{VHp`|ld
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import org.rut.util.algorithm.SortUtil; fDd!Mt
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/** yShHFlO=
* @author treeroot 0REWbcxd"
* @since 2006-2-2 K>[H@|k\k
* @version 1.0 5)UmA8"zVB
*/ CC\z_C*P-p
public class BubbleSort implements SortUtil.Sort{ K\b O[J
+HX'A C
/* (non-Javadoc) +]-KzDsr"V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lIz_0rE
*/ ))`Zv=y"
public void sort(int[] data) { 9^u?v`!
int temp; R~~rqvLm
for(int i=0;i for(int j=data.length-1;j>i;j--){ =@2V#X]M*
if(data[j] SortUtil.swap(data,j,j-1); !)O$Q}'\
} >| ?T|
} [R4x[36Zp
} Wv"tAseu
} kre&J
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} 5F"?]'*/
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选择排序: N^+ww]f?
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package org.rut.util.algorithm.support; &r%*_pX
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import org.rut.util.algorithm.SortUtil; iIE(zw)H
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/** %7msAvbk
* @author treeroot >|)0Amt
* @since 2006-2-2 ImY.HB^&
* @version 1.0 >x4[7YAU{
*/ d8HB2c5y0i
public class SelectionSort implements SortUtil.Sort { }&DB5M
=[JN'|Q+
/* |lxy< C4V
* (non-Javadoc) |a{]P=<q
* `fZD%o3l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2HXKz7da
*/ d|]O<]CG_
public void sort(int[] data) { K;[%S
int temp; AxlFU~E4
for (int i = 0; i < data.length; i++) { [+g@@\X4
int lowIndex = i; wkD:i 2E7
for (int j = data.length - 1; j > i; j--) { (0W}e(D8
if (data[j] < data[lowIndex]) { jJZsBOW[8
lowIndex = j; 8%<`$`FyU
} 8/"|VE DOr
} V=&,^qZ
SortUtil.swap(data,i,lowIndex); gvNZrp>e!
} -j_I_
} :(>9u.>l?5
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} | ",[C3Jg
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Shell排序: R9h>I3F=c
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package org.rut.util.algorithm.support; Cc)P5\jh
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import org.rut.util.algorithm.SortUtil; UglG!1L
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/** HhmVV"g
* @author treeroot 9K':Fn2,
* @since 2006-2-2 `t0f L\T
* @version 1.0 j yRSEk$
*/ =nx:GT3&[
public class ShellSort implements SortUtil.Sort{ -'[(Uzj
Wi[m`#
/* (non-Javadoc) -I-Uh{)j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *3O >J"
*/ zN+*R;Ds
public void sort(int[] data) { =kh>s$We
for(int i=data.length/2;i>2;i/=2){ >:E*7
for(int j=0;j insertSort(data,j,i); f&}A!uLe4x
} &3Z.
#*
} &4Con%YU[
insertSort(data,0,1); HI\f>U
} *fi;ZUPW3
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/** $[iT~B$
* @param data
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* @param j <;cE/W}}
* @param i 8A^jD(|
*/ /;&+<
}
private void insertSort(int[] data, int start, int inc) { 8a`+h#
int temp; !I5~))E
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RP,:[}mPl
} H [Lt%:r
} ouVjZF@kS
} ;,=h59`
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} :e]9T3Q
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快速排序: <*"pra{3
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package org.rut.util.algorithm.support; K-
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import org.rut.util.algorithm.SortUtil; ) wY!/&
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/** 6f?BltFaN
* @author treeroot 7q!yCU
* @since 2006-2-2 tB7K&ssi
* @version 1.0 n2d8;B#
*/ N3gNOq&
public class QuickSort implements SortUtil.Sort{ 0UGiPH,()
d"I28PIS"
/* (non-Javadoc) 'DzBp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8.CKH4h
*/ f[Fgh@4cj
public void sort(int[] data) { )W]>\=@Y
quickSort(data,0,data.length-1); N
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} }B"|z'u
private void quickSort(int[] data,int i,int j){ _t|G@D{
int pivotIndex=(i+j)/2; +Cf0Y2*@hM
file://swap YxEbg(Y
SortUtil.swap(data,pivotIndex,j); qA/#IUi)1
mT6q}``vtG
int k=partition(data,i-1,j,data[j]); /e|[SITe
SortUtil.swap(data,k,j); 8Y\OCwO
if((k-i)>1) quickSort(data,i,k-1); C NfJ:e2
if((j-k)>1) quickSort(data,k+1,j); [Iw>|q<e
wKk
3)@il
} kqD*TJA
/** >wKu6-
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* @param data eb!s'@
* @param i DhLr^Z!h3;
* @param j uZ\wwYY#M
* @return O
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*/ mN\%fJ7
private int partition(int[] data, int l, int r,int pivot) { K
lli$40
do{ rToaGQh
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "[*S?QO(L
SortUtil.swap(data,l,r); /WgPXE B
} jj!N39f
while(l SortUtil.swap(data,l,r); }UKgF.
return l; WVS$O99Y
} LBmM{Gu
cX%:
} (@)2PO/
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改进后的快速排序: F1gt3 ae
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package org.rut.util.algorithm.support; m7r j>X Y
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import org.rut.util.algorithm.SortUtil; ^^7L"je]g
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/** <.,RBo
* @author treeroot 17>5#JLP
* @since 2006-2-2 2J;kD2"!
* @version 1.0 I %|@3=Yc
*/ %cH8;5U40
public class ImprovedQuickSort implements SortUtil.Sort { |XKOXa3.
7_9+=.
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private static int MAX_STACK_SIZE=4096; Hp btj
private static int THRESHOLD=10; C-llq`(d
/* (non-Javadoc) 7hB#x]oQo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 59{;VY81
*/ >u=%Lz"J
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; q&zny2])
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int top=-1; Mv.Ciyc
int pivot; =X%!YZk p
int pivotIndex,l,r; I@n*[EC
EXA^!/)
stack[++top]=0; Ci~f#{
stack[++top]=data.length-1; tm(v~L%$>]
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while(top>0){ 7:n?PN(p6a
int j=stack[top--]; (y1$MYZQ
int i=stack[top--]; C,o:
VmN}FMGN
pivotIndex=(i+j)/2; DH5bpg&T
pivot=data[pivotIndex]; b,#`n
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SortUtil.swap(data,pivotIndex,j); m</]D WJ
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file://partition gaQ[3g
l=i-1; w{PUj
r=j; N0+hejz
do{ b-PSm=`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j!YNg*H
SortUtil.swap(data,l,r); O!;H}{[dg
} r0>q%eM8
while(l SortUtil.swap(data,l,r); N83!C=X'
SortUtil.swap(data,l,j); l+%Fl=Q2em
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if((l-i)>THRESHOLD){ >Q;
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stack[++top]=i; O?CdAnhQc`
stack[++top]=l-1; d]U`?A,
} ~?gzq~~t
if((j-l)>THRESHOLD){ .>}BNy
stack[++top]=l+1; 0HqPyM13Q
stack[++top]=j; $=/rGpAk
} Qh*)pt]n
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mb1
} 'e F%
file://new InsertSort().sort(data); `M&P[.9Pz
insertSort(data); 5J
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} Ua %UbAt
/** .}o~VT:!?Y
* @param data
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*/ ;_}~%-_
~
private void insertSort(int[] data) { KYp[Gs
int temp; iQqqs`K
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tww=~!
} $]C=qM28-
} le.anJAr
} :vpl+)n
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} 6,X+1EXY
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归并排序: cS4DN
x|8^i6xB
package org.rut.util.algorithm.support; .46#`4av
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import org.rut.util.algorithm.SortUtil; }MP>]8Aq
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/** _BbvhWN&+
* @author treeroot n+2%tW
* @since 2006-2-2 vDsF-u1
* @version 1.0 C8ZL*9U
*/ SAR=
{/
public class MergeSort implements SortUtil.Sort{ I7~| ~<
vB.l0!c\e_
/* (non-Javadoc) [@/ /#}5v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zVw:7-
*/ Or7
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public void sort(int[] data) { &=X.*H%
int[] temp=new int[data.length]; |jsb@
mergeSort(data,temp,0,data.length-1); eIH$"f;L
} Q=WySIF.
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private void mergeSort(int[] data,int[] temp,int l,int r){ \8{\;L C
int mid=(l+r)/2; 1c$vLo832
if(l==r) return ; J/ vK6cO\
mergeSort(data,temp,l,mid); nq1
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mergeSort(data,temp,mid+1,r); 7tRi"\[5
for(int i=l;i<=r;i++){ 1fH<VgF`
temp=data; )qv2)a!H
} Tg0CE60"
int i1=l; yrnv!moc%t
int i2=mid+1; `rlk|&T1
for(int cur=l;cur<=r;cur++){ vy[C'a
if(i1==mid+1) A|L'ih/
data[cur]=temp[i2++]; iPvuz7j=h
else if(i2>r) (,B#t7ka
data[cur]=temp[i1++]; f"dSr
else if(temp[i1] data[cur]=temp[i1++]; s3:9$.tiR[
else O(c@PJem
data[cur]=temp[i2++]; $5NKFJc
} py
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<
} l(!/Q|Q|
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} :Wc_Utt
wksl0:BL
改进后的归并排序: :QPf~\w?
.XS9,/S
package org.rut.util.algorithm.support; MLr-,
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import org.rut.util.algorithm.SortUtil; `XJm=/f
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/** ]A^4}CK^<
* @author treeroot "hQgLG
* @since 2006-2-2 #$E)b:xj
* @version 1.0 jo9gCP.
*/ lyv4fP
public class ImprovedMergeSort implements SortUtil.Sort { >P=Q #;v
rzUlO5?R=
private static final int THRESHOLD = 10; P6\6?am
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/* !Ms[eB
* (non-Javadoc) yCP4r6X0
* /TV=$gB`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dvc&RG
*/ e2cP
*J
public void sort(int[] data) { 6;iJ*2f5V
int[] temp=new int[data.length]; `XKVr
mergeSort(data,temp,0,data.length-1); x#*QfE/E(@
} iOCqE 5d3
]PR#W_&q
private void mergeSort(int[] data, int[] temp, int l, int r) { %\Wf^6Y^
int i, j, k; tU:EN;H
int mid = (l + r) / 2; ,R2U`EO;
if (l == r) }ptq
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return; a`!@+6yC
if ((mid - l) >= THRESHOLD) ^5; `-Ky
mergeSort(data, temp, l, mid); 2VoKr)
else _>yoX
insertSort(data, l, mid - l + 1); Uz
dc
if ((r - mid) > THRESHOLD) aG%,cQ 1
mergeSort(data, temp, mid + 1, r); t9cl"F=
else =0
insertSort(data, mid + 1, r - mid); ~ G6"3"
.iHn5SGA
for (i = l; i <= mid; i++) { @t*t+Vqw
temp = data; j Ux
z
} +>\id~c(
for (j = 1; j <= r - mid; j++) { MTOy8 Im
temp[r - j + 1] = data[j + mid]; 1:M@&1LYp
} 2%u;$pj
int a = temp[l]; V[nQQxWp=
int b = temp[r]; i+{yMol1
for (i = l, j = r, k = l; k <= r; k++) { F?-R$<Cn2~
if (a < b) { aZ|=(]
data[k] = temp[i++]; 5ZY<JA3
a = temp; ye}p~&
} else { >e,mg8u6$
data[k] = temp[j--]; $I9qgDJ)
b = temp[j]; O"G >wv
} rXfy!rD_P_
} p-SJ6Gg
9
} ]#2Y e7+
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/** vVl; |
* @param data m P'^%TE
* @param l hrGH}CU"
* @param i 36.N>G,
*/ JW.=T)
private void insertSort(int[] data, int start, int len) { 9f+>ix,ek*
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C3NdE_E
} \ZU1Jb1c
} umi5Wb<
} 10!wqyj&
} 'R`tLN
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堆排序: )WT>@
#jA[9gWI
package org.rut.util.algorithm.support; b2b?hA'k
b306&ZVEk
import org.rut.util.algorithm.SortUtil; Mi'8
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/** 5%sE]Y#
* @author treeroot ^j-3av=
* @since 2006-2-2 4vBL6!z:Z
* @version 1.0 H"ZZ.^"5FV
*/ yE[#ze
public class HeapSort implements SortUtil.Sort{ otggN:^Qw
P) 3mX.(}
/* (non-Javadoc) OO[F E3F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^&y$Wd]6
*/ Hx,0zS%>
public void sort(int[] data) { 2^i(gaXUQ
MaxHeap h=new MaxHeap(); p+)Y Tzzc
h.init(data); 9]q:[zm^
for(int i=0;i h.remove(); _6ay-u
System.arraycopy(h.queue,1,data,0,data.length); |2{wG4
} 8Q_SRwN
\=_{na_
private static class MaxHeap{ o=0]el^A
giz7{Ai
void init(int[] data){ "
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this.queue=new int[data.length+1]; pAT7)Ch
for(int i=0;i queue[++size]=data; +TXX$)3%
fixUp(size); q$=#A7H>3)
} OpHsob~
} 55z]&5N
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private int size=0; [sW3l:^
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private int[] queue; Y=Kc'x[,Zj
Oeok; :
public int get() { Ftr5k^!
return queue[1]; pS:4CNI{
} 9gmW&{6q
mGK|ihYu
public void remove() { .4E&/w+
SortUtil.swap(queue,1,size--); b}"N`,0dO
fixDown(1); T
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} 1]p ZrBh"E
file://fixdown <_-hRbS
private void fixDown(int k) { H5Io{B%=
int j; ,=[?yJy
while ((j = k << 1) <= size) { ye,>A.
if (j < size %26amp;%26amp; queue[j] j++; ~GZY 5HF
if (queue[k]>queue[j]) file://不用交换 ++^l]8
break; :0Rx#%u}#
SortUtil.swap(queue,j,k); 0E3[N:s
k = j; V T\F]Oa#
} sG92XJ
} )!P)U(*v
private void fixUp(int k) { G6$kv2(k`@
while (k > 1) { ~=uWD&5B4
int j = k >> 1; v]B3m
if (queue[j]>queue[k]) ?j"KV_
break; 8; 0A
g
SortUtil.swap(queue,j,k); {?:X8&Sf
k = j; X\bOz[\
} sT}.v*
} vH :LQ!2
tp6 3@L|Q
} ?#}N1k\S
*%%g{
3$
} BRgXr
K/IWH[
SortUtil: Brf5dT49
RO 4Z?tz
package org.rut.util.algorithm; CxwoBuG=?
{xXsBh
Y
import org.rut.util.algorithm.support.BubbleSort; W*Zkc:{eB
import org.rut.util.algorithm.support.HeapSort; "@iK'
c^
import org.rut.util.algorithm.support.ImprovedMergeSort; #h`
V>;
import org.rut.util.algorithm.support.ImprovedQuickSort; n*[XR`r}
import org.rut.util.algorithm.support.InsertSort; n\*!CXc
import org.rut.util.algorithm.support.MergeSort; fF7bBE)L/|
import org.rut.util.algorithm.support.QuickSort; S4Y&
import org.rut.util.algorithm.support.SelectionSort; *U&0<{|T
import org.rut.util.algorithm.support.ShellSort; -p]1=@A<}
ywGd> @
/** 5z7U1:
* @author treeroot gOSJM1Mr3
* @since 2006-2-2 ME46V6[LX]
* @version 1.0 =P't(<
*/ 7z JRJ*NB
public class SortUtil { ^c-
public final static int INSERT = 1; (l^3Z3zf&
public final static int BUBBLE = 2; ,,%i;
public final static int SELECTION = 3; gQ Fjr_IS#
public final static int SHELL = 4; 7%Gwc?[x
public final static int QUICK = 5; J??-j
public final static int IMPROVED_QUICK = 6; g
jDh?I
public final static int MERGE = 7; u0|8Tgf
public final static int IMPROVED_MERGE = 8; }wr{W:j
public final static int HEAP = 9; g{OwuAC_
z> Rsi
public static void sort(int[] data) { j*so9M6|c
sort(data, IMPROVED_QUICK); 7puFz4+f
} ObVGV
private static String[] name={ CZud&
<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7}f}$1
}; 2Rw&C6("w
sFT.Oxg<
private static Sort[] impl=new Sort[]{ \<JSkr[h!"
new InsertSort(), x@P y>f2
new BubbleSort(), $PTP/^
new SelectionSort(), m0ER@BXRn
new ShellSort(), {o_X`rgrL
new QuickSort(), _=_Px@<Q
new ImprovedQuickSort(), ,k )w6)
new MergeSort(), U}yW<#$+
new ImprovedMergeSort(), I`-8Air5f
new HeapSort() \F1_lq;K
}; xST8|H
JD)(oK%C
public static String toString(int algorithm){ PF)jdcX
return name[algorithm-1]; [I'0,y
} Tl(^
7Ri46Tkt
public static void sort(int[] data, int algorithm) { "& ])lz[u
impl[algorithm-1].sort(data); CR8/Ke
} 1"zDin!A
_4"mAPt
public static interface Sort { }Lc-7[/
public void sort(int[] data); nzd2zY>V
} Wk~WOzr}^
K0-ypU*P
public static void swap(int[] data, int i, int j) { HePUWL'
int temp = data; >80;8\
data = data[j]; HW3 }uP\c
data[j] = temp;
)j9SGLo
} 77C'*tt1]
} o3Yb7h9