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。 m3o,@=b
插入排序: aZ\UrV4,
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package org.rut.util.algorithm.support; mrX^2SR
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import org.rut.util.algorithm.SortUtil; >}(CEzc8
/** #-h\. #s
* @author treeroot c'*a{CV4P
* @since 2006-2-2 T?4G'84nN
* @version 1.0 8i?l02
*/ .7n\d55a
public class InsertSort implements SortUtil.Sort{ *Vho?P6y\Y
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/* (non-Javadoc) "?| > btr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LzYO$Ir:g
*/
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public void sort(int[] data) { \W%UZs
int temp; id$Ul?z8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 02Ia2e.f
} L \;6y*K
} &N3Y|2
} VN%INUi@
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} >MPr=W%E
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冒泡排序: Z}-Vf$O~
JMTvSXr
package org.rut.util.algorithm.support; n8.kE)?
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import org.rut.util.algorithm.SortUtil; KoS*0U<g6
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/** _v*
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* @author treeroot j)
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* @since 2006-2-2 8/K!SpM*d
* @version 1.0 *28pRvY:b
*/ `_&Vt=7lG
public class BubbleSort implements SortUtil.Sort{ RxQh2<?
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/* (non-Javadoc)
^ :F.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]D,MiDph
*/ 5Vi>%5A>l
public void sort(int[] data) { {aM<{_v
int temp; \lSU
for(int i=0;i for(int j=data.length-1;j>i;j--){ UQ4% Xp
if(data[j] SortUtil.swap(data,j,j-1); ?-Vjha@BO
} 7==f\%,
} oHs2L-G
} ;>mCalwj
} 2}W0
F2*
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} #0Tq=:AE>
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选择排序: 5y?-fT]X
&hk-1y9QS
package org.rut.util.algorithm.support; [}fv dW
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import org.rut.util.algorithm.SortUtil; M|] "W
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/** Dwl3Cj
* @author treeroot ?:Bv
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* @since 2006-2-2 ^H6<Km
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* @version 1.0 n>'Kp T9|
*/ &Ni`e<mP
public class SelectionSort implements SortUtil.Sort { y7^{yS[,
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/* 1J'3 g
* (non-Javadoc) VAXT{s&4>
* pn*3\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <`0h|m'U
*/ l
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public void sort(int[] data) { d,by/.2
int temp; F9*g=
for (int i = 0; i < data.length; i++) { 7L^%x3-|&
int lowIndex = i; $u/E\l
for (int j = data.length - 1; j > i; j--) { [ib P%xb
if (data[j] < data[lowIndex]) { C4NTh}6tT
lowIndex = j; |g3?y/l
} YA&g$!
} 7G)H.L)$m"
SortUtil.swap(data,i,lowIndex); hTbI -u7BF
} Q#IG;
} 8 B**8yg.
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} &[hLzlrg
1 n%?l[o
Shell排序: g&n )fF
$TI5vhQ
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; )yo
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/** kapC%/6"
* @author treeroot z%/N!RLW
* @since 2006-2-2 `CeJWL5{
* @version 1.0 *:O.97q@h
*/ o!~Jzd.=h
public class ShellSort implements SortUtil.Sort{ 1@gg uRF:
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/* (non-Javadoc) W0=O+0$^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9!><<7TS
*/ MaD3[4@#
public void sort(int[] data) { FE o269Ur
for(int i=data.length/2;i>2;i/=2){ sN("+ sZ.n
for(int j=0;j insertSort(data,j,i); B(F,h+ajy
} .I@CS>j
} LOTP*Syjf
insertSort(data,0,1); <40rYr$/J
}
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/** fo4.JyBk
* @param data 4 QZ?}iz
* @param j /\)a
* @param i zm,@]!wI
*/ )a3IQrf=
private void insertSort(int[] data, int start, int inc) { s
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int temp; <9sO
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cVwbg[W]
} Z`&4SH=j
} u`(-
-
} W>b(Om_%
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} bZx!0>h
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快速排序: 8t=(,^c
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package org.rut.util.algorithm.support; zS< jd~
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import org.rut.util.algorithm.SortUtil; LB/C-n.`
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/** $F.kK%-*
* @author treeroot "G:<7oTa
* @since 2006-2-2 OTZ_c1"K
* @version 1.0 0[<~?`:)
*/ <ER'Ed
public class QuickSort implements SortUtil.Sort{ hAj1{pA,
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/* (non-Javadoc) 1.q_f<U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s6o>m*{
*/ M/z}p
public void sort(int[] data) { 8z5# ]u;
quickSort(data,0,data.length-1); $0^P0RAH
} {7MjP+\
private void quickSort(int[] data,int i,int j){ !,Zp? g)
int pivotIndex=(i+j)/2; V3mAvmx
file://swap PIXL6
SortUtil.swap(data,pivotIndex,j); {RB-lfrWs
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int k=partition(data,i-1,j,data[j]); Dr;iQkGP
SortUtil.swap(data,k,j); MlW 8t[
if((k-i)>1) quickSort(data,i,k-1); _IeU+tS
if((j-k)>1) quickSort(data,k+1,j); 71C42=AU
E|:!Q8"%w
} joul<t-
/** gh6d&ucQ^
* @param data !AJ]j|@VBd
* @param i iqW1#)3'R
* @param j $mGvJ*9
* @return (5^ZlOk3
*/ wY"o`oZ
private int partition(int[] data, int l, int r,int pivot) { @d"wAZzD?
do{ AOrHU M[I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7<9L?F2
SortUtil.swap(data,l,r); &6Il(3-^
} ~Ki`Ze"x
while(l SortUtil.swap(data,l,r); H6aM&r9}
return l; Q:6VYONN
} ESb
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} l.nH?kK<
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改进后的快速排序: ]TstSF=
irTv4ZE'+l
package org.rut.util.algorithm.support; 0uCT+-
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import org.rut.util.algorithm.SortUtil; Q+i\8RJ
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/** 6#A:}B<?
* @author treeroot c-j_IN Gm
* @since 2006-2-2 H(Ms^8Vs~:
* @version 1.0 A>.2OC+
*/ p4VSma_(
public class ImprovedQuickSort implements SortUtil.Sort { PNSMcakD
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private static int MAX_STACK_SIZE=4096; >u J/TQU
private static int THRESHOLD=10; x O7IzqY
/* (non-Javadoc) rsa&Oo
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8O1K[sEjui
*/ H^1gy=kdj
public void sort(int[] data) { 7 gB{In0
int[] stack=new int[MAX_STACK_SIZE]; /)uM[ dnai
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int top=-1; (sw-~U%
int pivot; 8n4V
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int pivotIndex,l,r; O_K_f+7
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stack[++top]=0; *Zd84wRSj
stack[++top]=data.length-1; #l1Q e`
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while(top>0){ u@%|kc`
int j=stack[top--]; jJwkuh8R
int i=stack[top--]; U l Mi.;/^
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pivotIndex=(i+j)/2; b4,jN~ci
pivot=data[pivotIndex]; bdh(WJh%
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SortUtil.swap(data,pivotIndex,j); PI5j"u UO
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file://partition 3]E(mRX
l=i-1; xk~Nmb}
r=j; <M[U#Q~?~e
do{ $M"0BZQ?y!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O2-M1sd$
SortUtil.swap(data,l,r); L&Qi@D0P
} 6!EYrX}rI[
while(l SortUtil.swap(data,l,r); <8(?7QI
SortUtil.swap(data,l,j); (&&87(
: cp
if((l-i)>THRESHOLD){ [~Hg}-c
stack[++top]=i; i~qfGl p6)
stack[++top]=l-1; .6T6 S
v
} 2Eh@e([PMs
if((j-l)>THRESHOLD){ SlT*C6f
stack[++top]=l+1; =;c_} VY
stack[++top]=j; B!aK
}
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: \V,k~asl
} ]@xL=%
file://new InsertSort().sort(data); |Svk^m q
insertSort(data); #A <1aQ
} &A50'8B2A
/** #GqTqHNE<
* @param data XKLF8~y8A
*/ 4?]oV%aP)
private void insertSort(int[] data) {
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int temp; wFlV=!>,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,J9}.}Hd
} Sw!
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} & QZV q"
} m =&j@
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} M$CVQ>op:
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归并排序: ! gp}U#Yv
K%,$ V,#
package org.rut.util.algorithm.support; uzorLeu
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import org.rut.util.algorithm.SortUtil; = hX[
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/** &`:rp!Lc
* @author treeroot ~y\:iL//E
* @since 2006-2-2 +*EKR
* @version 1.0 U|fTb0fB
*/ z<a2cQ?XQ
public class MergeSort implements SortUtil.Sort{ !
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/* (non-Javadoc) B7"Fp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,8SWe
*/ ?ei%RWo
public void sort(int[] data) { kHU"AD}.
int[] temp=new int[data.length]; _Dq Qfc%
mergeSort(data,temp,0,data.length-1); +0#JnqH"
} Hql5oA
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private void mergeSort(int[] data,int[] temp,int l,int r){ {fG|_+tl3o
int mid=(l+r)/2; -Z?Ck!00
if(l==r) return ; F RH&B5w
mergeSort(data,temp,l,mid); lYQtv=q
mergeSort(data,temp,mid+1,r); R#6H'TVE
for(int i=l;i<=r;i++){ )W9_qmYd"
temp=data; 2lz
{_9
} G\/IM
int i1=l; nu 7lh6o=
int i2=mid+1; Lpm?#g uR
for(int cur=l;cur<=r;cur++){ b:B[3|
if(i1==mid+1) T]2U fi.
data[cur]=temp[i2++]; U1^l+G^,~
else if(i2>r) k&DGJ5m$.
data[cur]=temp[i1++]; G)+Ff5e0L[
else if(temp[i1] data[cur]=temp[i1++]; H'Iq~Ft1
else G `Izf1B`I
data[cur]=temp[i2++]; ^-L{/'[8M
} rsSue_Q
} p+D=}O
b{HhS6<K?
} FU]4oKx
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改进后的归并排序: h3t$>vs2F"
j#o3
package org.rut.util.algorithm.support; [`bZ5*&
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import org.rut.util.algorithm.SortUtil; +wts 7,3
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/** ("F)
* @author treeroot Kfd _uXL>
* @since 2006-2-2
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* @version 1.0 4.k`[q8
*/ y$h"ty{g
public class ImprovedMergeSort implements SortUtil.Sort { A5+5J_)*
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private static final int THRESHOLD = 10; !c_u-&b)
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/* p)z-W(
* (non-Javadoc) `G0*l|m>
* n'3u ]~7^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V(I7*_ZFl
*/ @$ftG
public void sort(int[] data) { /yt7#!tm+
int[] temp=new int[data.length]; zkG>u,B}
mergeSort(data,temp,0,data.length-1); ,]U[W
} x.G"D(
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private void mergeSort(int[] data, int[] temp, int l, int r) { M4H"].Zm
int i, j, k; i?W]*V~ply
int mid = (l + r) / 2; >@:667i,`
if (l == r) y;,y"W
return; OgTSx
if ((mid - l) >= THRESHOLD) o]p#%B?mZ
mergeSort(data, temp, l, mid); w#<^RKk
else O$(c.(_$
insertSort(data, l, mid - l + 1); #'c%
if ((r - mid) > THRESHOLD) ,M{Q}:$+4
mergeSort(data, temp, mid + 1, r); Rj&qh`
else @5GBuu^j
insertSort(data, mid + 1, r - mid); *k!(ti[
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for (i = l; i <= mid; i++) { D8EeZUqU
temp = data; tU(y~)]
} 3~:0?Zuq
for (j = 1; j <= r - mid; j++) { Vbo5`+NAis
temp[r - j + 1] = data[j + mid]; QK'`=MU
} uX98iJ
int a = temp[l]; 0 S2v"(_T
int b = temp[r]; KZW'O
b>[
for (i = l, j = r, k = l; k <= r; k++) { + q
l
if (a < b) { yz8-&4YRNd
data[k] = temp[i++]; DQMPAj.
a = temp; `i9N)3
X
} else { /M]eZ~QKD
data[k] = temp[j--]; =hPG_4#
b = temp[j]; fqN75['n
} :b<KX%g
} l:q8Pg)
} d&5c_6oW
Q%I#{+OT
/** ?Q;kZmQl
* @param data [f=.!\0\
* @param l A3z/Bz4]:#
* @param i M5F(<,n;
*/ J"5jy$30'$
private void insertSort(int[] data, int start, int len) { luibB&p1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r?>V x-
} RZW$!tyI=
} 3IGCl w(
} A*a7\id!y
} W=UqX{-j)
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堆排序: 0r0c|*[+4z
|xp$OL"a
package org.rut.util.algorithm.support; V@$GC$;
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import org.rut.util.algorithm.SortUtil; c6t2Q6zV
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/** P@2tR5<R
* @author treeroot cES;bwQ
* @since 2006-2-2 #fwzFS \XL
* @version 1.0 C%0<1mp
*/ XO 0>t{G
public class HeapSort implements SortUtil.Sort{ {%=S+89l
3T"#T&eL
/* (non-Javadoc) ,>&?ty9o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y*}AX%8`e~
*/ 'CS^2Z
public void sort(int[] data) { j \!~9
MaxHeap h=new MaxHeap(); KLG6QBkj
h.init(data); sP9 ^IP
for(int i=0;i h.remove(); 4xv9a;fP
System.arraycopy(h.queue,1,data,0,data.length); hK:#+hg,
} y=-{Q
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private static class MaxHeap{ ;:AG2zE!
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void init(int[] data){ 9@(O\ xr
this.queue=new int[data.length+1]; -zPm{a
for(int i=0;i queue[++size]=data; d|>9rX+f
fixUp(size); ]&&I|K_
} 9+]ZH.(YE
} F"-S~I7'L
:5r:I[FFy
private int size=0; Coga-: 2vu
1f+*Tmc5]Q
private int[] queue; .Ql;(Wyl
<FXQxM5"
public int get() { Bx\#`Y
return queue[1]; b%=1"&JI:
} \B*k_W/r@
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public void remove() { $~
pr+Ei
SortUtil.swap(queue,1,size--); {;]uL`abi?
fixDown(1); d [\>'>
} 6&g!ZE'G
file://fixdown ^?H\*N4
private void fixDown(int k) { :GN)7|:
int j; d[~au=b
while ((j = k << 1) <= size) { )v*v
if (j < size %26amp;%26amp; queue[j] j++; /AK*aRU^
if (queue[k]>queue[j]) file://不用交换 k$9Gn9L%
break; XS}Zq4H
SortUtil.swap(queue,j,k); +W V@o'
k = j; [,\'V0
} Jm{As*W>
} rg#qSrHp
private void fixUp(int k) { Ig40#pA
while (k > 1) { OlD7-c2L]
int j = k >> 1; G:E+s(x
if (queue[j]>queue[k]) <[ g$N4
break; :vn0|7W4
SortUtil.swap(queue,j,k); Mft0Dj/
k = j; X+(aQ
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} /t%"Dh8x
} 7?kXgR[#d
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} !Szgph"ul
y1@"H/nYJ
} j8D$/
)_x8?:lv
SortUtil: 4fU5RB7%
|Oj,S|Z:
package org.rut.util.algorithm; N7j]yvE
3rXL0&3w%
import org.rut.util.algorithm.support.BubbleSort; ,b2O^tJF#
import org.rut.util.algorithm.support.HeapSort; I&Eg-96@
import org.rut.util.algorithm.support.ImprovedMergeSort; erAZG)
import org.rut.util.algorithm.support.ImprovedQuickSort; } (GQDJp
import org.rut.util.algorithm.support.InsertSort; ;GSfN
import org.rut.util.algorithm.support.MergeSort; {ra Esb-X
import org.rut.util.algorithm.support.QuickSort; H|(*$!~e
import org.rut.util.algorithm.support.SelectionSort; I'6ed`|
import org.rut.util.algorithm.support.ShellSort; Eo25ir%
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/** RY'\mt"W2
* @author treeroot 0SGczgg
* @since 2006-2-2 &Hp\("
* @version 1.0 aaqjE
*/ *YEIG#`
public class SortUtil {
=t>`<T|(
public final static int INSERT = 1; <R]Wy}2-
public final static int BUBBLE = 2; j:vD9sdQ
public final static int SELECTION = 3; .+yJh
public final static int SHELL = 4; sN[@mAoH
public final static int QUICK = 5; RIVN>G[;L
public final static int IMPROVED_QUICK = 6; .q;RNCUt
public final static int MERGE = 7; Liz6ob
public final static int IMPROVED_MERGE = 8; ht[TMdV
public final static int HEAP = 9; Tl0+Bq
1<Ztk;$A
public static void sort(int[] data) { @_tA"E
sort(data, IMPROVED_QUICK); (*^E7
[w
} C*6bR? I9
private static String[] name={ 5xn0U5U
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <?`e9o
}; (}7o
a9Q<
N[?4yV2s
private static Sort[] impl=new Sort[]{ B )3SiU
new InsertSort(), ?;r7j V/`j
new BubbleSort(), y^Xxa'y
new SelectionSort(), $K>d \{@+7
new ShellSort(), -iZ js
new QuickSort(), J~ gkGso
new ImprovedQuickSort(), ^
8Nr %NJ
new MergeSort(), k3htHCf*G$
new ImprovedMergeSort(), zj$Z%|@$
new HeapSort() EXM/>PG
}; ?2bE=|
]a@v)aa-
public static String toString(int algorithm){ g5TLX&Bd
return name[algorithm-1]; ysP/@;jC
} @5nkI$>3z
7$!Bq#
public static void sort(int[] data, int algorithm) { @0x.n\M_
impl[algorithm-1].sort(data); tGy%n[ \
} oz5lt4
!*QA;*e
public static interface Sort { C&MqUj"]
public void sort(int[] data); $EHn;~w T
} Ns7l-mb
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public static void swap(int[] data, int i, int j) { ',-X#u
int temp = data;
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data = data[j]; sC*E;7gT,
data[j] = temp; [}g5Z=l
} .dq.F#2B;
} xVmUmftD