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。 K
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插入排序: 'WHHc 9rG,
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package org.rut.util.algorithm.support; _=
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import org.rut.util.algorithm.SortUtil; v){ .Z^_C
/** /ug8]Lo0
* @author treeroot XWJwJ
* @since 2006-2-2 M5T9JWbN
* @version 1.0 q_
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*/ y]%w )4PS
public class InsertSort implements SortUtil.Sort{ N8KQz_]9I
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/* (non-Javadoc) BQ^H? jo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JO14KY*%
*/ W&h[p_0
public void sort(int[] data) { 0iCPi)B
int temp; 1B*WfP~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qr#1 u
} k7tYa;C
} *%Qn{x
} s08u @
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} ,mPnQ?
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冒泡排序: 4E44Hzs
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package org.rut.util.algorithm.support; ?}Z1(it0
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import org.rut.util.algorithm.SortUtil; iAY!oZR(WT
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/** :hGPTf
* @author treeroot 5=(c%
* @since 2006-2-2 MJj4Hd
* @version 1.0 =O|c-k,f@
*/ 8\<jyJ
public class BubbleSort implements SortUtil.Sort{ ,?
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/* (non-Javadoc) f[gqT
yiP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AvR2_
*/ c41: !u^
public void sort(int[] data) { 9Pd*z>s
int temp; 4!`bZ`_Bw
for(int i=0;i for(int j=data.length-1;j>i;j--){ 66snC{gU
if(data[j] SortUtil.swap(data,j,j-1); G;gJNK"e
} 9Qj2W
} _eLWQ|6Fx
} Ql?^
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} 0;sRJ
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} Vbh6HqAHxJ
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选择排序: Dj-s5pAW
Gt9wR
package org.rut.util.algorithm.support; b7C
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import org.rut.util.algorithm.SortUtil; bM;`s5d
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/** x@P{l&:>
* @author treeroot 8F;>5i
* @since 2006-2-2 K0+;bu
* @version 1.0 Q/_[--0
*/ x:K?\<
public class SelectionSort implements SortUtil.Sort { xu%'GZ,o9
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/* Bt^K]F\
* (non-Javadoc) a7H0!9^h
* jRkC/Lw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h~HB0^|
*/ OVoO6F]
public void sort(int[] data) { L^9HH)Jc
int temp; >AD=31lq
for (int i = 0; i < data.length; i++) { #?}6t~
int lowIndex = i; ed~R>F>
for (int j = data.length - 1; j > i; j--) { "i'bTVs
if (data[j] < data[lowIndex]) { DrS~lTf=>
lowIndex = j; ?s}
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} t> Q{yw
} x49!{}
SortUtil.swap(data,i,lowIndex); J$uM 03
} P1 +"v*
} _rQUE^9
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} XL<
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Shell排序: -@%%*YI>
@
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package org.rut.util.algorithm.support; `LP!D
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import org.rut.util.algorithm.SortUtil; X\GM/A
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/** V:
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* @author treeroot Q/_#k/R
* @since 2006-2-2 ~bU7QLr
* @version 1.0 1/j$I~B
*/ kM*T$JqN
public class ShellSort implements SortUtil.Sort{ 10N,?a
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/* (non-Javadoc) r7z6___
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B#N7qoi
*/ 4_Rdp`x#J
public void sort(int[] data) { =:$) Z
for(int i=data.length/2;i>2;i/=2){ U~is-+Uq
for(int j=0;j insertSort(data,j,i); 9 pKm*n&
} l)}t,!M6
} 1t~({Pl<>
insertSort(data,0,1); `q?RF+
} k&Jo"[i&WO
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/** =:K@zlO:
* @param data v4<j
* @param j 8]*Q79
* @param i X\A]"su
*/ wa?+qiWnrl
private void insertSort(int[] data, int start, int inc) { G.jQX'%4QG
int temp; _
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); zGs|DB
} : ^(nj7D
} 9+VF<;Xw
} Y?!/>q
1M+Zkak7p
} g~R/3cm4
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快速排序: Yk7"XP[Y
yV_
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package org.rut.util.algorithm.support; j;0ih_Z@4W
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import org.rut.util.algorithm.SortUtil; jeFN*r_
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/** PJwEA
* @author treeroot S~&\o\"5
* @since 2006-2-2 c%yh(g
* @version 1.0 Em9my2oE
*/ z|%Bh
public class QuickSort implements SortUtil.Sort{ /'`6
;
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/* (non-Javadoc) w%~qB5wF6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zjt9vS)
*/ R`3x=q
public void sort(int[] data) { V<W02\Hs
quickSort(data,0,data.length-1); [J:zE&aj
} ahoh9iJ
private void quickSort(int[] data,int i,int j){ 'Z$jBL
int pivotIndex=(i+j)/2; Zih5/I
file://swap g5<ZS3tQ
SortUtil.swap(data,pivotIndex,j); Fj3^
#ly
|$ w0+bV*
int k=partition(data,i-1,j,data[j]); ;>/ipnx
SortUtil.swap(data,k,j); '}fel5YV
if((k-i)>1) quickSort(data,i,k-1); +DxifXtB
if((j-k)>1) quickSort(data,k+1,j); "?+UI
lYdQB[l
} T:'+6
/** * S{\#s
* @param data ZU^Q1}</5
* @param i A ')(SGSc
* @param j e
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* @return m^Rd Iy)
*/ ndB@J*Imu
private int partition(int[] data, int l, int r,int pivot) { nYgx9Q"<om
do{ &}O8w77
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SE-} XI\
SortUtil.swap(data,l,r); %N1T{
} _32/WQF6
while(l SortUtil.swap(data,l,r); LNbx3W
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return l; jiOf')d5
} y,1S&k
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} h
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改进后的快速排序: iPNd!_
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package org.rut.util.algorithm.support; l#|J
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import org.rut.util.algorithm.SortUtil; (T4k~T`3
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/** UzN8G$92qF
* @author treeroot B\NcCp`5
* @since 2006-2-2 DZF[dxH
* @version 1.0 (c
1u{
*/ XZ;*>(
public class ImprovedQuickSort implements SortUtil.Sort { vB]3Xb3a
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private static int MAX_STACK_SIZE=4096; K"G(?<>~4c
private static int THRESHOLD=10; f};!m=b
/* (non-Javadoc) ./2Z?,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]+FX$+H/A0
*/ 1.uUMW
public void sort(int[] data) { KgL<}=S
int[] stack=new int[MAX_STACK_SIZE]; +i2YX7Of
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int top=-1; pEJ#ad
int pivot; =nw,*q +
int pivotIndex,l,r; YcEtgpz@
}isCvb
stack[++top]=0; 55(J&q
stack[++top]=data.length-1; WNl&v]
'[ @F%
while(top>0){ PV?1g|tYv
int j=stack[top--]; 6j?FRs
int i=stack[top--]; /
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k q/t]%(
pivotIndex=(i+j)/2; 6zELe.tq
pivot=data[pivotIndex]; VM=hQYe
{_?T:`
SortUtil.swap(data,pivotIndex,j); {c&qB`y<.
5F% h>tqh
file://partition PjiNu.>2(
l=i-1; t00\yb^vJ8
r=j; |C&%S"*+D
do{ @Pd)
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BYkVg2D(
SortUtil.swap(data,l,r); 8 /5sv
}
#_?426Wfs
while(l SortUtil.swap(data,l,r); H^]Nmd8Q)
SortUtil.swap(data,l,j); ce 7Yr*ZB
L?AM&w-cg9
if((l-i)>THRESHOLD){ ecM4]U
stack[++top]=i; "``W6W-(
stack[++top]=l-1; 3(cU)
} A%.J%[MVz
if((j-l)>THRESHOLD){ Q:'qw#P/C
stack[++top]=l+1; 'Wo?%n
stack[++top]=j; ocb%&m;i
} VyB\]EBu
-G(3Y2
} 4Z<]4:o
file://new InsertSort().sort(data); Kx(76_XD
insertSort(data); z"
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} %AzPAWcN
/** V:nMo2'hb
* @param data H={O13
*/ 9;>@"e21R
private void insertSort(int[] data) { 3ybK6!g`[
int temp; "#_)G7W+e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jh<TdvF2$
} #i}# jMT
} /k4^&
} OpWC2t)
34/]m/2NZK
} lBizC5t!o
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归并排序: 7,) 67G;
+ 1E?He:iQ
package org.rut.util.algorithm.support; $gj+v+%N
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import org.rut.util.algorithm.SortUtil; yv6Zo0s<J
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/** 7/5NaUmPTt
* @author treeroot U.zRIhA]
* @since 2006-2-2 ]%cHm4#m3
* @version 1.0 zN?$Sxttx
*/ ,v$2'm)V
public class MergeSort implements SortUtil.Sort{ ~#HH;q_7m
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/* (non-Javadoc) /8P4%[\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >o0&:h|>$'
*/ Z`SWZ<
public void sort(int[] data) { t1.zWe+C>3
int[] temp=new int[data.length]; !q7;{/QM6
mergeSort(data,temp,0,data.length-1);
z&;zU)Jvd
} &;r'{$
twYB=68
private void mergeSort(int[] data,int[] temp,int l,int r){ o=QRgdPD
int mid=(l+r)/2; !0!P.Q8>&
if(l==r) return ; i/C
-{+}U
mergeSort(data,temp,l,mid); zR3lX}g
mergeSort(data,temp,mid+1,r); ,T,B0
for(int i=l;i<=r;i++){ >q}
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temp=data; ?34EJ
!
} vy2*BTU?
int i1=l; Zh@4_Z9n!
int i2=mid+1; EyKkjEXx_
for(int cur=l;cur<=r;cur++){ 6ywnyh
if(i1==mid+1) onWYT} c{
data[cur]=temp[i2++]; ^5FJ}MMJf
else if(i2>r) ,Do$`yO+
data[cur]=temp[i1++]; 0~@L%~
else if(temp[i1] data[cur]=temp[i1++];
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pe[V~F
else Tv*1q.MB
data[cur]=temp[i2++]; &2P:A
} BM=V,BZy
} P0`>{!r6@
+7lRP)1R
} Xj})?{FP
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改进后的归并排序: 3H\b N4
/q*Qx )y+1
package org.rut.util.algorithm.support; K&\BwBU
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import org.rut.util.algorithm.SortUtil; [#,X$O>
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/** ?}1JL6mF{
* @author treeroot l7D4`i<F
* @since 2006-2-2 j"D0nG,
* @version 1.0 Mi%1+
*/ "S{6LWkD
public class ImprovedMergeSort implements SortUtil.Sort { NejsI un%
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private static final int THRESHOLD = 10; w ufKb.4`
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/* 1S)0
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* (non-Javadoc) lo>-}xd
* 9m#H24{V'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9+N._u
*/ &ESR1$)'P
public void sort(int[] data) { @LkW_
int[] temp=new int[data.length]; ![X.%
mergeSort(data,temp,0,data.length-1); *+,Lc1|\
} SCI-jf3WN
S7#^u`'Q_^
private void mergeSort(int[] data, int[] temp, int l, int r) { LfjS[
int i, j, k; KH@) +Rj
int mid = (l + r) / 2; UtGd/\:
if (l == r) n/-p;#R
return; 2Xj-A\Oh~
if ((mid - l) >= THRESHOLD) :+gCO!9Y
mergeSort(data, temp, l, mid); q*<J$PI
else MSYLkQ}_b
insertSort(data, l, mid - l + 1); eqUn8<<s
if ((r - mid) > THRESHOLD) 0-&sJ
mergeSort(data, temp, mid + 1, r);
5Ky9P z
else e G*s1uQl
insertSort(data, mid + 1, r - mid); EDa08+Y
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for (i = l; i <= mid; i++) { (Aov}I+
temp = data; ;t@ 3Go
} Vp{RX8?.
for (j = 1; j <= r - mid; j++) { {7M4SC@p|
temp[r - j + 1] = data[j + mid]; )*$
} :;hBq4h
int a = temp[l]; 8HH.P`Vk#
int b = temp[r]; ]B[/sqf
for (i = l, j = r, k = l; k <= r; k++) { Q'Jpsmwu
if (a < b) { %f3Nml
data[k] = temp[i++]; tWX+\ |
a = temp; 2AdHj&XE
} else { )l!&i?h%
data[k] = temp[j--]; IpaJ<~ p
b = temp[j]; !i"9f_
} 9OJ\n|,(
} y
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} s$nfY.C
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/** yQA"T?
* @param data enD C#
* @param l DRBYH(
* @param i k}Clq;G
*/ vsr~[d=
private void insertSort(int[] data, int start, int len) { aY1#K6(y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I+4qu|0lA
} *i]Z=
} E/ed0'|m
} XGrxzO|{
} Rp@}9qijb
k f K"i
堆排序: )>A%FL9
0 *Yivx6
package org.rut.util.algorithm.support; C6T 9
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import org.rut.util.algorithm.SortUtil; kp
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/** 1
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* @author treeroot =ILo`Q~
* @since 2006-2-2 <812V8<!
* @version 1.0 T?}=k{C]
*/ =L; n8~{@y
public class HeapSort implements SortUtil.Sort{ A`8}J4
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/* (non-Javadoc) V:"\(Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) va*>q-QCr
*/ ea[a)Z7#
public void sort(int[] data) { xyJgHbml
MaxHeap h=new MaxHeap(); ()IgSj?,
h.init(data); #(Yb
lY
for(int i=0;i h.remove(); qP .VK?jF|
System.arraycopy(h.queue,1,data,0,data.length); zm^p7&ak$
} N@`9 ~JS
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private static class MaxHeap{ x?k |i}Q
nh.v?|
void init(int[] data){ c$Nl-?W
this.queue=new int[data.length+1]; 8w@jUGsc
for(int i=0;i queue[++size]=data; l=OC?d*m
fixUp(size); >a]
s
} H-y-7PW*~
} oO9iB:w
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private int size=0; [(^''*7r+T
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private int[] queue; E6IL,Iq9
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public int get() { 21J82M
return queue[1]; !m.')\4<
} 2!& ;ZcT,
K0!#l Br
public void remove() { C&K(({5O
SortUtil.swap(queue,1,size--); E]Gq!fA&<
fixDown(1); ;0}"2aGY
} XXdMp poR
file://fixdown 9*Mg<P"
private void fixDown(int k) { eMMiSO!3
int j; -8J@r2 \
while ((j = k << 1) <= size) { mp$II?hZ*
if (j < size %26amp;%26amp; queue[j] j++; Rn^N+3o'M
if (queue[k]>queue[j]) file://不用交换 MhB=+S[@
break; ?=o]Wx0(9
SortUtil.swap(queue,j,k); ;."{0gq
k = j; ,3TD $2};.
} kR|DzB7
} 2F)OyE
private void fixUp(int k) { ;iI2K/ 3
while (k > 1) { /|^^v DL
int j = k >> 1; Jx[e{o)o
if (queue[j]>queue[k]) )uJ`E8>-
break; WQ`P^5e
SortUtil.swap(queue,j,k); Z"&ODVP
k = j; x-k/rZ
} <5L` d}
} @)B5^[4(;
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} R_&V.\e_
d~s-;T
} \evgDZf
;Cpm3at
SortUtil: <^$b1<@
WED7]2>
package org.rut.util.algorithm; gM]/Y6*$b
\FX3=WW
import org.rut.util.algorithm.support.BubbleSort; xg!\C@$
import org.rut.util.algorithm.support.HeapSort; ]o[HH_`s@
import org.rut.util.algorithm.support.ImprovedMergeSort; Wl"fh_
import org.rut.util.algorithm.support.ImprovedQuickSort; ag4^y&
import org.rut.util.algorithm.support.InsertSort; 6m<9^NT
import org.rut.util.algorithm.support.MergeSort; zT 40,rk
import org.rut.util.algorithm.support.QuickSort; q:eAL'OkM
import org.rut.util.algorithm.support.SelectionSort; JugQ +0
import org.rut.util.algorithm.support.ShellSort; F#9KMu<<cI
l@9:VhU(
/** s0'U[]
* @author treeroot wY)GX
* @since 2006-2-2 nr6[rq
* @version 1.0 -2XIF}.Hu
*/ +n]Knfi
public class SortUtil { u9%:2$[
public final static int INSERT = 1; E 4(muhY
public final static int BUBBLE = 2; {_D'\i(Y_
public final static int SELECTION = 3; BbhdGFG1
public final static int SHELL = 4; 6iS+3+
public final static int QUICK = 5; V#FLxITk
public final static int IMPROVED_QUICK = 6; Z.19v>-c
public final static int MERGE = 7; SaScP
public final static int IMPROVED_MERGE = 8; rV{e[fGd
public final static int HEAP = 9; N1+]3kt ~
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public static void sort(int[] data) { je0 ?iovY
sort(data, IMPROVED_QUICK); Tdp$laPO'
} Q 7?4GxMj
private static String[] name={ 0;`PHNBq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W#/Ol59
}; +1A<kJ
.h }D%Qa
private static Sort[] impl=new Sort[]{ ZuON@ (
new InsertSort(), QpZhxp
new BubbleSort(), /FXfu
new SelectionSort(), 3@A k6Uh
new ShellSort(), ucO]&'hu:
new QuickSort(), @J)vuGS
new ImprovedQuickSort(), &0blHDMj{#
new MergeSort(), (6aZQ`H
new ImprovedMergeSort(), :"^$7
new HeapSort()
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}; |1x,_uyQ%
@T T[H*,
public static String toString(int algorithm){ jV8><5C
return name[algorithm-1]; 11'Tt!
} 6<GWDO
a_x6 v*
public static void sort(int[] data, int algorithm) { O`| ri5d
impl[algorithm-1].sort(data); s!\L1E
} M>#S
z
Sy~Mh]{E
public static interface Sort { IT"jtV
public void sort(int[] data); EZFWxR/
} \/G Y0s
ld6@&34
public static void swap(int[] data, int i, int j) { W6>uLMUa
int temp = data; l\GNd6)H
data = data[j]; /otgFQ_
data[j] = temp; D[?|\?
} Uh}yHD`K
} W>49,A,q