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。 -_|U"C$
插入排序: mg7Q~SLL{
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package org.rut.util.algorithm.support; s+yX82Y
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import org.rut.util.algorithm.SortUtil; 7|eD}=jy
/** _3?7iH
* @author treeroot 8HymkL&F
* @since 2006-2-2 [>tyx{T Ye
* @version 1.0 /iekww^54
*/ ]@MBE1M
public class InsertSort implements SortUtil.Sort{ %.*?i9}
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/* (non-Javadoc) .TTXg,8#D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nXuoRZ
*/ =W~K_jE5lo
public void sort(int[] data) { E
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int temp; }TS4D={1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HC*V\vz
} cp7Rpqg
} =5sUpPV(
} ;0f?-W?1
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} * -Kf
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冒泡排序: 4d*=gy%
tzeS D C
package org.rut.util.algorithm.support; #D-L>7,jA
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import org.rut.util.algorithm.SortUtil; wKq-|yf,
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/** AW+q#Is
* @author treeroot Ux Yb[Nbc
* @since 2006-2-2 u~9gR @e2{
* @version 1.0 ag$mc8-p[
*/ n"1LVJN7
public class BubbleSort implements SortUtil.Sort{ ~#b&UR
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/* (non-Javadoc) *y;(c)_w/%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J \@yP
*/ '}D$"2I*
public void sort(int[] data) { ~fE6g3
int temp; b'N(eka
for(int i=0;i for(int j=data.length-1;j>i;j--){ K)AJx"
if(data[j] SortUtil.swap(data,j,j-1); ?
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} :{d?B$
} Cku&s
} x*A_1_A
} oD]riA>jC
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} P-?ya!@"
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选择排序: TqM(I[J7\
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package org.rut.util.algorithm.support; l0m\2Ttf
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import org.rut.util.algorithm.SortUtil; ]Hp o[IF
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/** )vFJx[a<n`
* @author treeroot abq$OI
* @since 2006-2-2 5y. n
* @version 1.0 |Go?A/'
*/ 5Mfs)a4j.
public class SelectionSort implements SortUtil.Sort { cC.=,n
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/* f3>8ZB4
* (non-Javadoc) !vU$^>zo~
* u;xl}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qsjTo@A
*/ %E95R8SL
public void sort(int[] data) { smpz/1U
int temp; Hz}6XS@
for (int i = 0; i < data.length; i++) { :wJ=t/ho
int lowIndex = i; "#4p#dM0e
for (int j = data.length - 1; j > i; j--) { %z6.}4h
if (data[j] < data[lowIndex]) { c$)Y$@D
lowIndex = j; 6B)3SC
} #Y3:~dmJ-
} |fMjg'%{}
SortUtil.swap(data,i,lowIndex); x~Egax
} h 7feZ_
} K|-?1)Um
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} uaMf3HeYV
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Shell排序: <_HK@E<_HO
4WV'\R+m
package org.rut.util.algorithm.support; ({#9gTP2b
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import org.rut.util.algorithm.SortUtil; 1]HEwTT/1_
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/** 4J=6A4O5Z
* @author treeroot _pSCv:3T
* @since 2006-2-2 7tOOruiC
* @version 1.0 W+[XNIg5
*/ ?)$+W+vK
public class ShellSort implements SortUtil.Sort{ ,EyZ2`|
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/* (non-Javadoc) 9o<}*L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <MgR
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*/ 6#S}EaWf
public void sort(int[] data) { `T H0*:aI
for(int i=data.length/2;i>2;i/=2){ _jV(Gv'
for(int j=0;j insertSort(data,j,i); 9$&+0
} FgIL Q"+
} |1GR:b24
insertSort(data,0,1); 3[kY:5-
} jd9GueV*(
S/}6AX#F4
/** GE`:bC3
* @param data V`OeJVe
* @param j #hEN4c[Ex
* @param i 6iwIEb
*/ $dAQ'\f7
private void insertSort(int[] data, int start, int inc) { [AzQP!gi
int temp; Y>KRI2](<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4q"x|}a
} MWv_BXQ
} I^iJ^Z]vx
} \Q+9sV
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} $x,?+N
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快速排序: S<"M5e
B4^+&B#
package org.rut.util.algorithm.support; !8q+W`{
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import org.rut.util.algorithm.SortUtil; YQ}xr^VA
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/**
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* @author treeroot Mq-QWx"P
* @since 2006-2-2 +0U{CmH
* @version 1.0 /.<tC(
*/ f, 9jK9/$
public class QuickSort implements SortUtil.Sort{ 9-;ujl?{
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/* (non-Javadoc) Jz D
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )X{ x\
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*/ $:M *$r^u
public void sort(int[] data) { I`"8}d@Jm
quickSort(data,0,data.length-1); ]>fAV(ix
} 9] /xAsD
private void quickSort(int[] data,int i,int j){ aY 8"Sw|4
int pivotIndex=(i+j)/2; |cpBoU
file://swap hzIP ?0^E
SortUtil.swap(data,pivotIndex,j); !'>(r K$
6~8A$:
int k=partition(data,i-1,j,data[j]); 8<(qN>R
SortUtil.swap(data,k,j); :TU;%@7
if((k-i)>1) quickSort(data,i,k-1); ^UP!y!&N
if((j-k)>1) quickSort(data,k+1,j); :USN`"
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} [(v?Z`cX\
/** [:gPp)f,
* @param data /(C?3}}L
* @param i ,bT|:T@ny
* @param j O9OD[VZk
* @return Wz)O,X^
*/ CJ B
private int partition(int[] data, int l, int r,int pivot) { S,Q!Xb@
do{ Z;kRQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RAMkTS
SortUtil.swap(data,l,r); xU$A/!oK
} juQ&v>9W)
while(l SortUtil.swap(data,l,r); {awv=s
return l; 5/j7 C>
} PI{;3X}9$,
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} W- Q:G=S-
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改进后的快速排序: i^j1i
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package org.rut.util.algorithm.support; E(DNK
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import org.rut.util.algorithm.SortUtil; m~;fklX S
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/** b&:>v9U
* @author treeroot _'9("m V
* @since 2006-2-2 (_S`9Z8=
* @version 1.0 Jt79M(Hp!
*/ RlH|G
public class ImprovedQuickSort implements SortUtil.Sort { Xup rl2+
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private static int MAX_STACK_SIZE=4096; >B)&mC$$S
private static int THRESHOLD=10; b~;gj^
/* (non-Javadoc) nY(>|!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f,Q oA
*/ [?rK9I&
public void sort(int[] data) { v{%x,K56
int[] stack=new int[MAX_STACK_SIZE]; )?35!s6
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int top=-1; y V=Ku
int pivot; on?<3eED
int pivotIndex,l,r; 0k]$ he;h
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stack[++top]=0; <A{|=2<
stack[++top]=data.length-1; VyQ@. Lm
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while(top>0){ Dq=&K,5;
int j=stack[top--]; #-76E
int i=stack[top--]; uTsxSkHb/
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pivotIndex=(i+j)/2; HgH\2QL3&
pivot=data[pivotIndex]; !*2cK>`
cd_\?7
SortUtil.swap(data,pivotIndex,j); "R8: s
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file://partition 5^kLNNum
l=i-1; =Uy;8et
r=j; F@m]Imn5Dx
do{ _v~c3y).
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bv %Bo4s
SortUtil.swap(data,l,r); tK@|sZ>3\
} E
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while(l SortUtil.swap(data,l,r); =;9
%Q{
SortUtil.swap(data,l,j); x`7Ch3`4}
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if((l-i)>THRESHOLD){ p~(+4uA
stack[++top]=i; g]kM7,/M
stack[++top]=l-1; %S$P<nKN5
}
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if((j-l)>THRESHOLD){ b2L9%8h
stack[++top]=l+1; e}@VR<h
stack[++top]=j; uD'yzR!]+
} F4M )x`
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} \[\4= !v
file://new InsertSort().sort(data); X`/GiYTu
insertSort(data); pm2-F]
} >(E C.ke
/** B#Q` !B4v
* @param data "0*yD[2
*/ `efC4#*!!
private void insertSort(int[] data) { H1bHQB
int temp; ni2GZ<1j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WD/\f$4
} 8
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} <v=$A]K
} )2z<5 `
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} #}PQ !gZ
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归并排序: $&25hvK,
MQc<AfW3/
package org.rut.util.algorithm.support; G_m $?0\
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import org.rut.util.algorithm.SortUtil; J#>)+
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/**
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* @author treeroot qw?Wi%t(x8
* @since 2006-2-2 ^4 MJ
* @version 1.0 D%`O.2T Y|
*/ pD@:]VP
public class MergeSort implements SortUtil.Sort{ DX2_}|$!
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/* (non-Javadoc) $#z-b@s=B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'fK3L<$z#m
*/ (U{,D1?
public void sort(int[] data) { !"g2F}n
int[] temp=new int[data.length]; t !8(I R
mergeSort(data,temp,0,data.length-1); ybC0Ee@
} v~*Co}0OB
m
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private void mergeSort(int[] data,int[] temp,int l,int r){ =.`:jZG
int mid=(l+r)/2; !+k);;.+
if(l==r) return ; xA'RO-a}h
mergeSort(data,temp,l,mid); w4Uo-zr@
mergeSort(data,temp,mid+1,r); } =p e;l
for(int i=l;i<=r;i++){ |EGC1x]j=
temp=data; /n2qW.qJ>
} bA-/"'Vp9
int i1=l; 1gA^Qv~?
int i2=mid+1; s||c#+j"8
for(int cur=l;cur<=r;cur++){ u?F^gIw
if(i1==mid+1) |2Y/l~
data[cur]=temp[i2++]; zH13~\
else if(i2>r) 43}uW,P
data[cur]=temp[i1++]; p)qM{`]G\
else if(temp[i1] data[cur]=temp[i1++]; SIZ&0V
else [$DI!%e|
data[cur]=temp[i2++]; z',f'3+
} U>i}C_7g
} }Ip1|Gj
X:/7#fcG8
} o
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改进后的归并排序: K0{
,*>C
/ M@[ 8
package org.rut.util.algorithm.support; 7<*,O&![|
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import org.rut.util.algorithm.SortUtil; Eb7GiRT#
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/** U+Vb#U7;
* @author treeroot )zydD=,bu
* @since 2006-2-2 #Ibpf ,
* @version 1.0 o3X0c6uU
*/ sE])EwZ
public class ImprovedMergeSort implements SortUtil.Sort { Ov#G 7a"
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private static final int THRESHOLD = 10; 1=_Qj}!1
cl'wQ1<:
/* G-TD9OgZ
* (non-Javadoc) 2BO&OX|X
* [ <j4w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =PjxMC._
*/ Q0%s|8Jc
public void sort(int[] data) { +xuj ]J
int[] temp=new int[data.length]; z~th{4#E;
mergeSort(data,temp,0,data.length-1); wg4Ol*y'
} v"l8[::
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private void mergeSort(int[] data, int[] temp, int l, int r) { RBLOc$2
int i, j, k; T930tX6"h
int mid = (l + r) / 2; Cw l:
if (l == r) 2%/+r
return; >uxAti\
if ((mid - l) >= THRESHOLD) WFTwFm6
mergeSort(data, temp, l, mid); tHEZuoi
else w8bvqTQ
insertSort(data, l, mid - l + 1); +OZ\rs
if ((r - mid) > THRESHOLD) G1Vn[[%k
mergeSort(data, temp, mid + 1, r); =z4J[8bb
else
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insertSort(data, mid + 1, r - mid); !xU[BCbfYV
VHG}'r9KC%
for (i = l; i <= mid; i++) { &@ ${@
temp = data; M[C)b\
} buDz]ec
b
for (j = 1; j <= r - mid; j++) { *=P*b|P"$
temp[r - j + 1] = data[j + mid]; aoBiN_
} $WO{!R
int a = temp[l]; MS]Q\g}U
int b = temp[r]; A6
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for (i = l, j = r, k = l; k <= r; k++) { JL[!8NyU
if (a < b) { k~?5mUyK<
data[k] = temp[i++]; 6#Rco%07zI
a = temp; lx7]rkWo|a
} else { F##xVmR~
data[k] = temp[j--]; j^/=.cD|
b = temp[j]; %LuA:{EVD
} hrGX65>
} _j*a5fsPU
} O
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!="8ok+
/** EMDYeXpV
* @param data tO?-@Qf/9<
* @param l 5}b)W>3@`
* @param i !JBj%| !
*/ Ir=G\/A
private void insertSort(int[] data, int start, int len) { ?<T=g
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /t*Q"0X5
} Y ` Z,52
} h"[:$~/UJ
} n(i/jW~0w
} _h 6c[*
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堆排序: ,N
nh$F
RRQIlI<
package org.rut.util.algorithm.support; n}-
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import org.rut.util.algorithm.SortUtil; 2XEE/]^
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/** TM|PwY
* @author treeroot 9aX!<Z
* @since 2006-2-2 :i|]iXEI"
* @version 1.0 ah,"c9YX
*/ yivWT;`
public class HeapSort implements SortUtil.Sort{ KT17I&:
nPDoK!r'
/* (non-Javadoc) p 16+(m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R&$fWV;'
*/ 3`)ej`
public void sort(int[] data) { ,9MNB3
MaxHeap h=new MaxHeap(); 8n:N#4Dh^
h.init(data); abCxB^5VL
for(int i=0;i h.remove(); jfVw{\l
System.arraycopy(h.queue,1,data,0,data.length); 4?bvJJuf)
} .&`apQD}
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private static class MaxHeap{ ,`YIcrya:
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void init(int[] data){ +1@'2w{
this.queue=new int[data.length+1]; mD|Q+~=|e
for(int i=0;i queue[++size]=data; OJh MM-
fixUp(size); >&k`NXS|V
} gf>GK/^HH
} _^`V0>Mh:
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private int size=0; B@#vS=g
z@ `u$D$n
private int[] queue; F/[m.!Eo
Rf2mBjJ(z
public int get() { 0cVxP)J+
return queue[1]; %|1s9?h7\
} RKM5FXX
Z9*@w`x^u
public void remove() { =-&h@mB;G
SortUtil.swap(queue,1,size--); tR2%oT>h
fixDown(1); 2E`mbT,v&
} mNEh\4ai
file://fixdown `M(st%@n
private void fixDown(int k) { c=QN!n:
int j; jw
5 U-zi
while ((j = k << 1) <= size) { ReL+V
if (j < size %26amp;%26amp; queue[j] j++; rl&.|;5uH;
if (queue[k]>queue[j]) file://不用交换 }Z t#OA
$
break; @ &Od1X
SortUtil.swap(queue,j,k); uBn35%
k = j; &FJr?hY%
} E@#<p-@~
} y~wr4Q=
private void fixUp(int k) { SqdI($F\:
while (k > 1) { Aon.Y Z
int j = k >> 1; ]0[ot$Da6
if (queue[j]>queue[k]) _OS,zZ0
break; ^zS;/%
SortUtil.swap(queue,j,k); N9y+Psh
k = j; LGVy4D
} E7_OI7C
} ckv8QAm
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} tmM; Z(9t
0&b;!N!vJ
} DL,]iJm
O6ugN-d>
SortUtil: 9sd}Z,l
};EB[n
package org.rut.util.algorithm; =dQ/^C_hj
K5\l
(BB
import org.rut.util.algorithm.support.BubbleSort; A wk1d
import org.rut.util.algorithm.support.HeapSort; c&{= aIe w
import org.rut.util.algorithm.support.ImprovedMergeSort; b!`Ze~V
import org.rut.util.algorithm.support.ImprovedQuickSort; t5u#[*
import org.rut.util.algorithm.support.InsertSort; bd% M.,
import org.rut.util.algorithm.support.MergeSort; ~C>Q+tR8
import org.rut.util.algorithm.support.QuickSort; DlAwB1Ak
import org.rut.util.algorithm.support.SelectionSort; @LDs$"f9=
import org.rut.util.algorithm.support.ShellSort; 0vBQzM Q
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/** J#t8xL
* @author treeroot 25 :v c0
* @since 2006-2-2 q(L.i)w$
* @version 1.0 7~'%ThUb$-
*/ fX6pW%Q'6
public class SortUtil { "a33m:]J
public final static int INSERT = 1; ?4Fev_5m
public final static int BUBBLE = 2; LP'q$iB!
public final static int SELECTION = 3; 1$6
u
public final static int SHELL = 4; mH5>50H;
public final static int QUICK = 5; {?EmO+![}
public final static int IMPROVED_QUICK = 6; C dPQhv)m
public final static int MERGE = 7; ;l `Ufx
public final static int IMPROVED_MERGE = 8; 0Zo><=
public final static int HEAP = 9; VGu(HB8n#
yOvV"x]
public static void sort(int[] data) { 8>D*U0sNl
sort(data, IMPROVED_QUICK); NWQ7%~#k*
} ,Mi'NO
private static String[] name={ ua &uR7
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^P/OHuDL
}; Fi\)ka\u
aG4 ^xOD
private static Sort[] impl=new Sort[]{ BM)a,fIgo
new InsertSort(), a|[f%T<<
new BubbleSort(), f~TkU\Rh
new SelectionSort(), %W| Sl
new ShellSort(), x_?K6[G&}
new QuickSort(), g2'K3e?.%
new ImprovedQuickSort(), "&^KnWk=
new MergeSort(), m(kv:5<>
new ImprovedMergeSort(), 4e;
le&
new HeapSort() px+]/P<dX
}; )hoVB
_FS #~z'j
public static String toString(int algorithm){ R%)F9P$o
return name[algorithm-1]; v$(Z}Hg
} wN/v-^2
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public static void sort(int[] data, int algorithm) { In!^+j
impl[algorithm-1].sort(data); qt"6~r!
} NiE`u m
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public static interface Sort { FYefn3b
public void sort(int[] data); f4NN?"W)
} @KLX,1K
U7f
o4y1}
public static void swap(int[] data, int i, int j) { rwh4/h^S
int temp = data; [C~N#S[]
data = data[j]; h4Arg~Or
data[j] = temp; pmi[M)D
} (dO0`wfM
} 5xNOIOpDB