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。 C_o.d~xm
插入排序: j\<S 6%p#R
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package org.rut.util.algorithm.support; 54-x 14")
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import org.rut.util.algorithm.SortUtil; ?g2K&
/** +=v|kd
* @author treeroot 7UfyOOFa
* @since 2006-2-2 v?J2cL
* @version 1.0 `Jo}/c5R
*/ $on liW|
public class InsertSort implements SortUtil.Sort{ 3/D fsv
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/* (non-Javadoc) ~ i,my31
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &x}JC/u]fd
*/ TzjZGs W[V
public void sort(int[] data) { l1msXBC
int temp; Fwtwf{9I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~Km8-b(&
} Z2r\aZ-d`
} `1d r$U
} b`'
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冒泡排序: p O.8>C%
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package org.rut.util.algorithm.support; /TdTo@
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import org.rut.util.algorithm.SortUtil; Wp ]u0w
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/** ?hO*~w;UU|
* @author treeroot pa7fTd
* @since 2006-2-2 Hmz[pTQ|87
* @version 1.0 *Z(qk`e.b
*/ ^gy(~u
public class BubbleSort implements SortUtil.Sort{ 8EQ;+V
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/* (non-Javadoc) mdwY48b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X~0P+E#
*/ {u7E )Fdl
public void sort(int[] data) { >2ct1_
int temp; [Z 1Eje X
for(int i=0;i for(int j=data.length-1;j>i;j--){ t{ 'QMX
if(data[j] SortUtil.swap(data,j,j-1); a v/=x
} ie)Qsw@
} 1FuChd
} hd900LA}
} p"ZPv~("V
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} PO#FtG
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选择排序: }k%>%xQ.
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package org.rut.util.algorithm.support; @Q'5/q+
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import org.rut.util.algorithm.SortUtil; Ofn:<d
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/** p47~vgJN
* @author treeroot fK[9<"PC0
* @since 2006-2-2 kG{(Qi
* @version 1.0 kb>9;-%^JK
*/ *op7:o_
public class SelectionSort implements SortUtil.Sort { v / a/
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/* GYj`-t
* (non-Javadoc) gpPktp2
* hPl;2r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dK=BH=S2?X
*/ r`5;G4UI
public void sort(int[] data) { 0 X@5W$x
int temp; F"LT\7yjyG
for (int i = 0; i < data.length; i++) { =%bc;ZUu
int lowIndex = i; lps
for (int j = data.length - 1; j > i; j--) { 8`*(lKiL
if (data[j] < data[lowIndex]) { #)XO,^s.
lowIndex = j; Cnc77EUD
} zX3O_
} 8ciLzyrY*
SortUtil.swap(data,i,lowIndex); +ISB"a
} Re=bJ|wo
} 8s|r'
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}
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Shell排序: 3p7*UVR"
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package org.rut.util.algorithm.support; H`fkds
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import org.rut.util.algorithm.SortUtil; 4}gwMjU-B
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/** G G7N!eZ
* @author treeroot seJc,2Ex
* @since 2006-2-2 f}*Xz.[bCp
* @version 1.0 iud%X51
*/ )p&xpB(
public class ShellSort implements SortUtil.Sort{ ]J~5{srq:
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/* (non-Javadoc) u+{5c5_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r,F'Jd5
*/ (33[N
public void sort(int[] data) { u{J:wb
for(int i=data.length/2;i>2;i/=2){ )m?oQ#`m
for(int j=0;j insertSort(data,j,i); qlSMg;"Ghw
} ^y&l!,(A
} ZgN*m\l
insertSort(data,0,1); `9@!"p
f
} :5;[Rg5
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/** JG4Tb{F=
* @param data T
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* @param j Xa-]+_?Q
* @param i 9gjx!t>`H
*/ tEb2>+R
private void insertSort(int[] data, int start, int inc) { 4iDo.1B"
int temp; zm"& 8/l
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GlVq<RG*
} `,TPd ~#~
} #LF_*a0v
} 1`b?nX
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} Il!iqDHz3
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快速排序: ^ 3Vjmv
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package org.rut.util.algorithm.support; V$@@!q
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import org.rut.util.algorithm.SortUtil; 6Bs_"
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/** dBCg$Rud&
* @author treeroot (/PD;R$b
* @since 2006-2-2 6Ba>l$/q
* @version 1.0 @Yy=HV
*/ [4"%NY
public class QuickSort implements SortUtil.Sort{ ^
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/* (non-Javadoc) T-JJc#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OG0ro(|dI
*/ :s*&_y
public void sort(int[] data) { 'v4AM@%u
quickSort(data,0,data.length-1); ~d28"p.7
} }k'8*v}8
private void quickSort(int[] data,int i,int j){ HD Eq q
int pivotIndex=(i+j)/2; )07M8o!^l
file://swap C!v0*^i
SortUtil.swap(data,pivotIndex,j); `4XfT.9GT
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int k=partition(data,i-1,j,data[j]); uPb9j;Q?
SortUtil.swap(data,k,j); s|dL.@0,L
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); VM|8HR7U
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} julAN$2
/** {_PV~8u
* @param data VAV@Qn
* @param i IC7n;n9
* @param j Wu%;{y~#}
* @return G| ^tqI
*/ Xo }w$q5
private int partition(int[] data, int l, int r,int pivot) {
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do{ <#sB ;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RDk{;VED{
SortUtil.swap(data,l,r); F^KoEWj[H
} ?^0#:QevC
while(l SortUtil.swap(data,l,r); WF_G GF{
return l; 'Zk&AD ~
} n6
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改进后的快速排序: vP?"MG
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package org.rut.util.algorithm.support; BB=%tz`B
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import org.rut.util.algorithm.SortUtil; ;<MHDmD
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/** `ffWV;P
* @author treeroot IB(5 &u.
* @since 2006-2-2 [G4#DP\t>p
* @version 1.0 qDOx5.d
*/ H#G'q_uHH
public class ImprovedQuickSort implements SortUtil.Sort { >e"1a/2%>&
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private static int MAX_STACK_SIZE=4096; z$H
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private static int THRESHOLD=10; $:F] O$A
/* (non-Javadoc) G,$RsP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N!^U{;X7/
*/ TC"mP!1
public void sort(int[] data) { ?5"~V^L3
int[] stack=new int[MAX_STACK_SIZE]; F6YMcdU
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int top=-1; ;%hlh)k$
int pivot; : E]A51
int pivotIndex,l,r; X2T)]`@
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stack[++top]=0; Mt<TEr}7Z=
stack[++top]=data.length-1; 592q`m\
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while(top>0){ &`0heJ
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int j=stack[top--]; N^CD4l
int i=stack[top--]; pOpie5)7X
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pivotIndex=(i+j)/2; $ v$~.
pivot=data[pivotIndex]; E.4`aJ@>d
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SortUtil.swap(data,pivotIndex,j); mp%i(Y"vp
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file://partition 9Jaek_A`
l=i-1; X{<j%PdC
r=j; OV Iu&6#
do{ p7Gs
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5(tOQ%AQ
SortUtil.swap(data,l,r); IgQW 5E#
} !$f@j6.
while(l SortUtil.swap(data,l,r); m?>$!B4jFB
SortUtil.swap(data,l,j); ES<"YF
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if((l-i)>THRESHOLD){ teQ%t~PJ-&
stack[++top]=i; mS0*%[S {
stack[++top]=l-1; ?UQE;0 B
} ?:~Y%4;
if((j-l)>THRESHOLD){ }vPDCUZ
stack[++top]=l+1; Ri"3o
stack[++top]=j; z9u"?vdA
} }"2
0:
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3
} ^1Y0JQ
file://new InsertSort().sort(data); VLkK6W.u
insertSort(data); ;:a7rN"(
} e:6R +8s2
/** gBf%9F
* @param data @ $4(!80-
*/ ^t?P32GJ
private void insertSort(int[] data) { /t(dhz&xN
int temp; 5! NK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y`! 3Z} 7
} f'TdYG
} .COY%fz
} 7.hn@_
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} Cj31'
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归并排序: GadQ \>
wBA[L}
package org.rut.util.algorithm.support; vn KKK. E
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import org.rut.util.algorithm.SortUtil; htq#( M
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/** 3z!\Z[
* @author treeroot BJ @tUn
* @since 2006-2-2 K9;pX2^z9
* @version 1.0 8m2-fuJz
*/ =pF 6
public class MergeSort implements SortUtil.Sort{ #,0%g1
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/* (non-Javadoc) oZA?}#DRl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K\`L>B. 1
*/ mflH &Bx9
public void sort(int[] data) { !/BXMj,=
int[] temp=new int[data.length]; ?Xx,[Z&
mergeSort(data,temp,0,data.length-1); HUfH/x3zj]
} bYYyXM
3;u* _ ]N_
private void mergeSort(int[] data,int[] temp,int l,int r){ 0~<d<a -@
int mid=(l+r)/2; w q% 4'(
if(l==r) return ; >u4%s7v
mergeSort(data,temp,l,mid); CVyqr_n65/
mergeSort(data,temp,mid+1,r); +>@<'YI<
for(int i=l;i<=r;i++){ EX~ U(JB6
temp=data; q1;}~}W;z4
} I?.$
int i1=l; 7xb z)FI
int i2=mid+1; ^^qB=N[';
for(int cur=l;cur<=r;cur++){ ,q] Wi#
if(i1==mid+1) hCQzD2
data[cur]=temp[i2++]; Z}5;K"T/
else if(i2>r) 6HW<E~G'6
data[cur]=temp[i1++]; \`Db|D?oy
else if(temp[i1] data[cur]=temp[i1++]; y<.0+YL-e+
else HcXyU/>D
data[cur]=temp[i2++]; L
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}
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} ]s?BwLU6
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} 2M3.xUS
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改进后的归并排序: A% 9TS/-p
q+>J'UGb
package org.rut.util.algorithm.support; Xm8
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import org.rut.util.algorithm.SortUtil; c^S^"M|
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/** lX/6u
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* @author treeroot dq%7A=-
* @since 2006-2-2 ,3Y~ #{,i
* @version 1.0 u.YPb@
*/ g4cmYg3
public class ImprovedMergeSort implements SortUtil.Sort { 4\H:^U&
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private static final int THRESHOLD = 10; -9Wx;u4]o
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/* lR\=] ]7I>
* (non-Javadoc) HaXlc8
* (Hb
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8zS't2
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*/ AdxCP\S&
public void sort(int[] data) { !([Q1r{u
int[] temp=new int[data.length]; br*L|s\P\9
mergeSort(data,temp,0,data.length-1); JhRXfIK>{
} 5M4mFC6
rl qn39
private void mergeSort(int[] data, int[] temp, int l, int r) { RUC
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int i, j, k; *lRP ZN
int mid = (l + r) / 2; /Y_F"GQ
if (l == r) L']EYK5
return; ))^rk6
if ((mid - l) >= THRESHOLD) oqH811
mergeSort(data, temp, l, mid); 2T3v^%%j
else {|c
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insertSort(data, l, mid - l + 1); |v#N
if ((r - mid) > THRESHOLD) T%A45BE
V
mergeSort(data, temp, mid + 1, r); :[z=u
else KY9sa/xO
insertSort(data, mid + 1, r - mid); fo9O+e s
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for (i = l; i <= mid; i++) { jFf2( AR
temp = data; ( >zXapb2
} /bv`_>
for (j = 1; j <= r - mid; j++) { <GC<uB |p
temp[r - j + 1] = data[j + mid]; OiH
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} 1H`T=:P?
int a = temp[l]; 6*u#^">,<
int b = temp[r]; t33/QW
r
for (i = l, j = r, k = l; k <= r; k++) { uF_gfjR[m
if (a < b) { -e_IDE
data[k] = temp[i++]; _IBIx\F
a = temp; &@u;xc| v
} else { -fFM-gt^t
data[k] = temp[j--]; o6,$;-?F_
b = temp[j]; jE|Ju:}&
} D[ U[D
} - ?_aYJ
} 3CK4a,]Dm
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/** dIgaw;Ch]
* @param data /_}xTP"9
* @param l GzxtC&
* @param i ,R]hNjs-{
*/ S G|``}OA
private void insertSort(int[] data, int start, int len) { Tu2BQ4\[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2mN>7Tj:
} WW82=2rJ9
} 7t= e"|^
} m,NUNd#)\
} ~9c?g(0
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堆排序: "W$,dWF
fx(^}e
package org.rut.util.algorithm.support; =$;i
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import org.rut.util.algorithm.SortUtil; 4^vEMq8lB
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/** d%VG@./xq
* @author treeroot v1%rlP
* @since 2006-2-2 )X2=x^u*U
* @version 1.0 u~FXO[b
*/ jH#Tt;
public class HeapSort implements SortUtil.Sort{ ykcW>h
6!7LgM%4
/* (non-Javadoc) }w .[ZeP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y^$^B,
*/ o"dX3jd
public void sort(int[] data) { +X6xCE
MaxHeap h=new MaxHeap(); P6V_cw$
h.init(data); 8wz%e(
for(int i=0;i h.remove(); t:NTk(
System.arraycopy(h.queue,1,data,0,data.length); vn<z\wVbf
} g]?&qF}
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private static class MaxHeap{ m?bd6'&FR
YSERQo
void init(int[] data){ #12
this.queue=new int[data.length+1]; nTxeV%
for(int i=0;i queue[++size]=data; *X- 6]C
fixUp(size); 0Ou;MU*v
} H1X3 8
} bE:oF9J?
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private int size=0; V)#se"GV
lj0"2@z3"E
private int[] queue; VL=. JwK
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public int get() { _V\rs{
5
return queue[1]; #T:#!MKa
} >MD['=J[d
Si#I^aF`%
public void remove() { KPO?eeT.WZ
SortUtil.swap(queue,1,size--); ZYDLl8
fixDown(1); a_Y*pOu
} dU%Q=r8R
file://fixdown ?oF+?l
private void fixDown(int k) { EfHo1Yn&
int j; SXkUtY$
while ((j = k << 1) <= size) { 1vKc>+9
if (j < size %26amp;%26amp; queue[j] j++; (n:d
{bKV
if (queue[k]>queue[j]) file://不用交换 _Kdqa%L
!
break; :L gFd
SortUtil.swap(queue,j,k); 1xN6V-qk
k = j; C-!!1-Eq?:
} N>qOiw[
} a9S0glbwf
private void fixUp(int k) { 'q%56WAJ
while (k > 1) { pleLdGq
int j = k >> 1; xL8r'gV@
if (queue[j]>queue[k]) 6UK{0\0
break; mYLqT$t.+
SortUtil.swap(queue,j,k); `B6~KZ
k = j; l_tr,3_w
} \HX'^t`
} W"
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} ?blF6Kl$
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} Ibt~e4f
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SortUtil: PI_MSiYQ
k L\;90
package org.rut.util.algorithm; u!I Es
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import org.rut.util.algorithm.support.BubbleSort; T"7Ue
import org.rut.util.algorithm.support.HeapSort; Hl`S\
import org.rut.util.algorithm.support.ImprovedMergeSort; tPu0r],`o
import org.rut.util.algorithm.support.ImprovedQuickSort; sb"z=4
import org.rut.util.algorithm.support.InsertSort; ?+#|h;M8
import org.rut.util.algorithm.support.MergeSort; a@(4X/|
import org.rut.util.algorithm.support.QuickSort; z}I =:
import org.rut.util.algorithm.support.SelectionSort; $:IOoS|e
import org.rut.util.algorithm.support.ShellSort; ~ [L4,q
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/** NIZN}DnP
* @author treeroot %Jy0?W N
* @since 2006-2-2 ]WlE9z7:8
* @version 1.0 B-Bgk
*/ ]D(!ua5|x`
public class SortUtil { thG;~W
public final static int INSERT = 1; XaT9`L<
public final static int BUBBLE = 2; )~/;Xl#b-
public final static int SELECTION = 3; 0>@D{_}s
public final static int SHELL = 4; h|
q!Qsnj'
public final static int QUICK = 5; 6*yt^[W
public final static int IMPROVED_QUICK = 6; Qtj.@CGB
public final static int MERGE = 7; vv='.R, D
public final static int IMPROVED_MERGE = 8; =!}n .
public final static int HEAP = 9; Uedzt
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public static void sort(int[] data) { anDwv
}
sort(data, IMPROVED_QUICK); -|E|-'
} R^8L^8EL
private static String[] name={ D7q%rO|F'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M "QT(u+
}; &!/E&e$_
"rhU2jT=c
private static Sort[] impl=new Sort[]{ A4;EtW+F
new InsertSort(),
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