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。 i"M$hXO
插入排序: 2cJ3b
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package org.rut.util.algorithm.support; iS8yJRy
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import org.rut.util.algorithm.SortUtil; 2C&l\16
/** o2riy'~
* @author treeroot aD?ySc}
* @since 2006-2-2 5[$Tpn#K7
* @version 1.0 XV<{tqa
*/ } q r
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public class InsertSort implements SortUtil.Sort{ YksJ$yH^
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/* (non-Javadoc) j2!^iGS}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z]Mu8
*/ v<S?"#
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public void sort(int[] data) { +JBYGYN&K
int temp; n0@ \x=9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nTXM/
} F='rGQK!1
} BxXP]od
} _sNJU
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} fK9wr@1
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冒泡排序: n@| &jh
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package org.rut.util.algorithm.support; 6%UhP;(
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import org.rut.util.algorithm.SortUtil; qRA,-N
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/** $x1PU67
* @author treeroot 7{DSLKtN
* @since 2006-2-2 E\=23[0
* @version 1.0 C'//(gjQ-G
*/ c9xc@G!
public class BubbleSort implements SortUtil.Sort{ ,W&::/2<7
,~xX[uB
/* (non-Javadoc) 4>8'.8S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tv7A&Z)Rh
*/ iN@+,]Yjl
public void sort(int[] data) { L+$9 ,<'[
int temp; T! fF1cpF\
for(int i=0;i for(int j=data.length-1;j>i;j--){ `Ot;KDz
if(data[j] SortUtil.swap(data,j,j-1); YumHECej
} hj-#pL-t
} x[H9<&)D
} D|R,$v:
} [H2"z\\u
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} g_t1(g*s
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选择排序: xs3t~o3y
ZzV%+n7<Vx
package org.rut.util.algorithm.support; Snf1vH
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import org.rut.util.algorithm.SortUtil; 3a]Omuu|=
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/** C@[f Z
* @author treeroot VWR6/,N^_
* @since 2006-2-2 h$y0>eMWs
* @version 1.0 "~zQN(sR"P
*/ bMpCQ
public class SelectionSort implements SortUtil.Sort { Qk.:b
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/* F`\7&'I
* (non-Javadoc) ZI'Mr:z4
* A#B6]j)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 34\:1z+s M
*/ \a6knd
public void sort(int[] data) { {Deg1V!x>
int temp; .V:H~
for (int i = 0; i < data.length; i++) { $x%VUms
int lowIndex = i; VY=c_Gl
for (int j = data.length - 1; j > i; j--) { g<r'f"^
if (data[j] < data[lowIndex]) { F(Iq8DV
lowIndex = j; @`6db
} a\m@I_r.N
} JQ.w6aE
SortUtil.swap(data,i,lowIndex); <rs"$JJV
} <n:j@a\up0
} zf>r@>S!L
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} ?3
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Shell排序: %SJ9Jr,
QjlwT 2o'
package org.rut.util.algorithm.support; qc-4;m o
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import org.rut.util.algorithm.SortUtil; oAgO3x
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/**
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* @author treeroot |
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* @since 2006-2-2 Kqt,sJ
* @version 1.0 :b_R1ZV|
*/ KvrcO#-sL
public class ShellSort implements SortUtil.Sort{ ^SouA[
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/* (non-Javadoc) #D-L>7,jA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DxLN{g]B
*/ p kR+H|
public void sort(int[] data) { ?u9JRXj%
for(int i=data.length/2;i>2;i/=2){ >=_Z\ wA
for(int j=0;j insertSort(data,j,i); ZzuEw
} bQ"w%!
} MQv2C@K9F
insertSort(data,0,1); Ux Yb[Nbc
} KF[P
/cFI
MH>CCT
/** >dW~o_u'QN
* @param data [z1[4
* @param j T53|*~u
* @param i .D`""up|{
*/ G3&l|@5
private void insertSort(int[] data, int start, int inc) { q!
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int temp; C?3?<FDL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [o=v"s't)
} <d\Lvo[
} 9)a:8/Y
} :u7y k@
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} 6-@
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快速排序: 9Xg+$/
4ISZyO=
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; wY`yP!xO
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/** OI9V'W$
* @author treeroot q+/c+u?=^
* @since 2006-2-2 X=<-rFW
* @version 1.0 :-=,([TJ
*/ os]P6TFFX?
public class QuickSort implements SortUtil.Sort{ o1"MW>B,4
72gQ<Si
/* (non-Javadoc) 2U-F}Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qifjv0&;u
*/ G6N$^HkW?
public void sort(int[] data) { Dwq }O
quickSort(data,0,data.length-1); e)[>E\u _
} F;mK)Q-
private void quickSort(int[] data,int i,int j){ }?pY~f
int pivotIndex=(i+j)/2; sz' IGy%
file://swap Z2]ySyt]
SortUtil.swap(data,pivotIndex,j); `2X#;{a:
lqO"
int k=partition(data,i-1,j,data[j]); ]Hp o[IF
SortUtil.swap(data,k,j); HrUQ X4
if((k-i)>1) quickSort(data,i,k-1); e7<//~W7W
if((j-k)>1) quickSort(data,k+1,j); =U6%Wdth
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} d85\GEF9i
/** ?t&sT
* @param data 38wt=0br
* @param i `3Gjj&c
* @param j %d5;JEgA:g
* @return '[ZRWwhr
*/ cC.=,n
private int partition(int[] data, int l, int r,int pivot) { LCrE1Q%VP
do{ F
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n
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H1(Zzn1
SortUtil.swap(data,l,r); XCNfogl
} K +oFu%
while(l SortUtil.swap(data,l,r); S+Aq0B<
return l; 5YlY=J
} DlkHE8r\
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} Y~qv 0O6K
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改进后的快速排序: _R!KHi
x<'(b7{U0
package org.rut.util.algorithm.support; k\T,CZ<
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import org.rut.util.algorithm.SortUtil; s6(iiB%d
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/** JfmNI~%
* @author treeroot oJ cR)H
* @since 2006-2-2 KLI(Rve24
* @version 1.0 E$-u:Z<-
*/ !$"DD[~\
public class ImprovedQuickSort implements SortUtil.Sort { `.f
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private static int MAX_STACK_SIZE=4096; "5]Fl8c?
private static int THRESHOLD=10; W|K"0ab
/* (non-Javadoc) :/N/u5.]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1nv#Ehorg
*/ S4j` =<T,
public void sort(int[] data) { j +j2_\
int[] stack=new int[MAX_STACK_SIZE]; <MhjvHg
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int top=-1; x/NR_~Rnk
int pivot; >^#OtFHuT)
int pivotIndex,l,r; TO.71x|
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stack[++top]=0; jXEuK:exQ
stack[++top]=data.length-1; sp4J%2b
&u62@ug#}
while(top>0){ y$VYWcFE
int j=stack[top--]; ~+1t3M e
int i=stack[top--]; m>C}T
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pivotIndex=(i+j)/2; ^`Tns6u>
pivot=data[pivotIndex]; ~c~$2Xo
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SortUtil.swap(data,pivotIndex,j); =9UR~-`d\
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file://partition d,fX3
l=i-1; @V/Lqia
r=j; (U"Ub;[7
do{ Y}_J@&:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WPBn?vb0<
SortUtil.swap(data,l,r); HS{a^c%
} \atztC{-L>
while(l SortUtil.swap(data,l,r); BlF]-dF\
SortUtil.swap(data,l,j); s? /#8 `
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if((l-i)>THRESHOLD){ Ys@M1o
stack[++top]=i; L-}>;M$Y)
stack[++top]=l-1; box(FjrZE
} E5d?toZ,8"
if((j-l)>THRESHOLD){ *u$MqN
stack[++top]=l+1; cd8~y
stack[++top]=j; <}~`YU>=v
} !`8WNY?K
#}50oWE
} G3{t{XkV
file://new InsertSort().sort(data); TqbDj|7`R
insertSort(data); u<x2"0f
} }cK<2J#
/** .\kcWeC\
* @param data f\sxx!kt
*/ wYtL1D(
private void insertSort(int[] data) { `=A*ei5
int temp; q=bW!.#?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l MCoc 'ae
} _qg)^M 6
} 6iwIEb
} yvxdl=s
[#y/`
} AtRu)v6r
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归并排序: v\Zni4
tETT\y|'
package org.rut.util.algorithm.support; #%CbZw@hJ9
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import org.rut.util.algorithm.SortUtil; G[4TT#
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/** OhmKjY/}
* @author treeroot % AqUVt9}
* @since 2006-2-2 "mbcZ5_
* @version 1.0 x{Y}1+Y4
*/ s hbPy
public class MergeSort implements SortUtil.Sort{ Vv=/{31
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/* (non-Javadoc) %T]NM3|U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IwC4fcZX6
*/ Sa!r ,l
public void sort(int[] data) { ]3@6o*R;
int[] temp=new int[data.length]; pkjf5DWp
mergeSort(data,temp,0,data.length-1); bWzv7#dd=
} z=TaB^-)
# Ny
private void mergeSort(int[] data,int[] temp,int l,int r){ WVc3C-h,
int mid=(l+r)/2; v?zA86d_
if(l==r) return ; |zD{]y?S-
mergeSort(data,temp,l,mid); Pl_4;q!$
mergeSort(data,temp,mid+1,r); ZhqrN]x
for(int i=l;i<=r;i++){ <rUH\z5cP
temp=data; QUL^]6$
} @OOnO+g
int i1=l; 7n*,L5%?]4
int i2=mid+1; =[8EQdR
for(int cur=l;cur<=r;cur++){ `Tt}:9/3
if(i1==mid+1) V eO$n*O
data[cur]=temp[i2++]; iOpMU
else if(i2>r) jEj#|w
data[cur]=temp[i1++]; )X{ x\
/N
else if(temp[i1] data[cur]=temp[i1++]; %u\Oj \8U
else T9r"vw
data[cur]=temp[i2++]; :[:5^R
} 6e,|HV
} y9d[-j
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} y:Xs/RS
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改进后的归并排序: 5urM,1SQ@
]]lgCac_U9
package org.rut.util.algorithm.support; (4_7ICFI
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import org.rut.util.algorithm.SortUtil; !'>(r K$
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/** &V7@ TZ
* @author treeroot }} cz95
* @since 2006-2-2 E~?0Yrm F
* @version 1.0 f}q4~NPn-
*/ ,]?Xf>
public class ImprovedMergeSort implements SortUtil.Sort { =[%ge{ ,t
:USN`"
private static final int THRESHOLD = 10; *Dr -{\9
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/* 4 4bTx y
* (non-Javadoc) j.Ro(0%
* %VG;vW\V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [r'PGx
*/ Y 1a[HF^-
public void sort(int[] data) { ,bT|:T@ny
int[] temp=new int[data.length]; Az4+([
mergeSort(data,temp,0,data.length-1);
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} 9{{QdN8
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private void mergeSort(int[] data, int[] temp, int l, int r) { O]{3aMs!Y
int i, j, k; cW B>
int mid = (l + r) / 2; $0WO
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if (l == r) dz
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return; TWF6YAQm
if ((mid - l) >= THRESHOLD) RAMkTS
mergeSort(data, temp, l, mid); x)eYqH~i
else @y%4BU&>0
insertSort(data, l, mid - l + 1); K_/8MLJQ
if ((r - mid) > THRESHOLD) $qkVu
mergeSort(data, temp, mid + 1, r); s%h|>l[lKT
else 0r?975@A
insertSort(data, mid + 1, r - mid); Oo'IeXQ9(
Y<('G5A
for (i = l; i <= mid; i++) { 6<sd6SM
temp = data; PW(4-H
} 1iWo*+5
for (j = 1; j <= r - mid; j++) { f%n],tE6
temp[r - j + 1] = data[j + mid]; o>rsk
6lNi
} :3`6P:^
int a = temp[l]; C/Vs+aW
n
int b = temp[r]; +`pS 7d
for (i = l, j = r, k = l; k <= r; k++) { OiI[w8
if (a < b) { #<ppiu$
data[k] = temp[i++]; r|$@Wsb?#
a = temp; ~(E.$y7P
} else { m~;fklX S
data[k] = temp[j--]; tL0<xGI5^
b = temp[j]; z3!j>X_w
} U ObI&*2
} `"CIy_m
} ^):m^w.
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/** kO:|?}Koc
* @param data d-e6hI4b
* @param l b-pZrnZ!
* @param i '6l4MR$j&m
*/ ^z&eD,
private void insertSort(int[] data, int start, int len) { $4K(AEt[
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~WH4D+
} 8:9m< ^4S(
} 2xBIfmR^y
} 2=Sv#
} V~j:!=b%v
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堆排序: "`P/j+-rt
`#O%ZZ+
package org.rut.util.algorithm.support; j#^EZ/
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import org.rut.util.algorithm.SortUtil; U5 X\RXy~
*1FDK{
/** j`JY3RDD
* @author treeroot W;~ f865
* @since 2006-2-2 (S1c6~
* @version 1.0 on?<3eED
*/ v&t~0jX,
public class HeapSort implements SortUtil.Sort{ YyOPgF] M
h`O"]2
/* (non-Javadoc) Z05kn{<a8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <9zzjgzG{c
*/
*&$J.KM
public void sort(int[] data) { DONXq]f:,"
MaxHeap h=new MaxHeap(); ~)!yl. H
h.init(data); ~)5NX
4Po
for(int i=0;i h.remove(); 8<BYAHY^
System.arraycopy(h.queue,1,data,0,data.length); #-76E
} vW`Dy8`06
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private static class MaxHeap{ 3r{3HaN(^'
RmF,x9
void init(int[] data){ \G}02h
this.queue=new int[data.length+1]; 0#\K9|.
for(int i=0;i queue[++size]=data; i?+ZrAx>
fixUp(size); ?:@13wm
} Y0nnn
} pq8XCOllXx
;U7o)A;
private int size=0; VaYL#\;c<
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private int[] queue; r6
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public int get() { OIi8x?
.~]
return queue[1]; bv %Bo4s
} yVF1*#"
[bE-Uu7q5P
public void remove() { Y
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SortUtil.swap(queue,1,size--); _ ~q!<-Z
fixDown(1); .3xpDVW^e
} &BF97%E2
file://fixdown M::
private void fixDown(int k) { kV>[$6
int j; X`-7: !+
while ((j = k << 1) <= size) { MNC=r?
if (j < size %26amp;%26amp; queue[j] j++; QaAA@l
if (queue[k]>queue[j]) file://不用交换 UZcsMMKH
break; w'Y(doY,
SortUtil.swap(queue,j,k); OS$}ej\
k = j; 6I)[6R
} PE!/ n6
} b2L9%8h
private void fixUp(int k) { @#HB6B
while (k > 1) { 9jwcO)p^
int j = k >> 1; uD'yzR!]+
if (queue[j]>queue[k]) .bdp=vbA
break; irjOGn
SortUtil.swap(queue,j,k); Z;=h=
k = j; !H)$_d \uj
} |nOqy&B
} ;Dh\2! sr
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} ++9?LH4S4
;_$Q~X
} m1pge4*
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SortUtil: Iax-~{B3AY
'=s{9lxn^
package org.rut.util.algorithm; ^)J2tpr;]=
=*0KH##%$
import org.rut.util.algorithm.support.BubbleSort; I{bDa'rX
import org.rut.util.algorithm.support.HeapSort; h#hx(5"6
import org.rut.util.algorithm.support.ImprovedMergeSort; T]er_n
import org.rut.util.algorithm.support.ImprovedQuickSort; 0H$6_YX4A
import org.rut.util.algorithm.support.InsertSort; ON(OYXj
import org.rut.util.algorithm.support.MergeSort; -FOn%7r#Y
import org.rut.util.algorithm.support.QuickSort; RB\
Hl
import org.rut.util.algorithm.support.SelectionSort; K#"J8h;x
import org.rut.util.algorithm.support.ShellSort; uez"{ _I
b]0]*<~y
/** LDDgg
u
* @author treeroot >m$jJlAv8
* @since 2006-2-2 /Dd.C<F
* @version 1.0 $ol]G`+
*/ _+sb~
public class SortUtil {
%wFz4:
public final static int INSERT = 1; /"+CH\)
E
public final static int BUBBLE = 2; 8ln{!,j;
public final static int SELECTION = 3; N F$k~r
public final static int SHELL = 4; QJ
i5 H
public final static int QUICK = 5; 0Cg}yy Oz
public final static int IMPROVED_QUICK = 6; h 8%(,$*
public final static int MERGE = 7; &9+]{jXF
public final static int IMPROVED_MERGE = 8; "*U0xnI
public final static int HEAP = 9; hqXp>.W
&nV/XLpG
public static void sort(int[] data) { lQS(\}N
sort(data, IMPROVED_QUICK); ^cUmLzM
} =l)D$l
private static String[] name={ *&vlfH
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @:dn\{Zsea
}; k!Ym<RD%N
c;X%Ar
private static Sort[] impl=new Sort[]{ E,kDy:
new InsertSort(), Y9/`w@"v
new BubbleSort(), |D% O`[k+
new SelectionSort(), $#z-b@s=B
new ShellSort(), bmOK8
new QuickSort(), \DiAfx<Ub
new ImprovedQuickSort(), _2-fH
new MergeSort(), 4Wd
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new ImprovedMergeSort(), ]/9@^D}&
new HeapSort() x/pX?k
}; B_uhNLd
Aaw]=8 OI
public static String toString(int algorithm){ q"48U.}T
return name[algorithm-1]; l`bl^~xRo
} 5g q
k/Z]zZC
public static void sort(int[] data, int algorithm) { 4-CGe
impl[algorithm-1].sort(data); sck.2-f"
} LULRi#n
(+CNs
public static interface Sort { .9u0WP95
public void sort(int[] data); 2M+}o"g
} Bq5-L}z
/n2qW.qJ>
public static void swap(int[] data, int i, int j) { ,Y&7` m
int temp = data; l\/uXP?
data = data[j]; s/l>P~3=
data[j] = temp; 1gA^Qv~?
} sv.?C pE
}
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