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。 jn vJ`7zFP
插入排序: tdSy&]P
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package org.rut.util.algorithm.support; J'^H@L/E
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import org.rut.util.algorithm.SortUtil; h|OqM:J;
/** %UZ_wsY\
* @author treeroot D /ysS$!{
* @since 2006-2-2 xc)A`(g
* @version 1.0 ~]f+
*/ 8 tMfh
public class InsertSort implements SortUtil.Sort{ r&sm&4)p-5
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/* (non-Javadoc) ipU,.@~#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~]X4ru5,4
*/ rT$J0"*=
public void sort(int[] data) { ,E,oz {,i(
int temp; !G E-5 \*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pN# \
} 2)}ic2]pn
} 1{@f:~ v?
} ozN#LIM>P
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} R3+y*<<e
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冒泡排序: :m*r(i3
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package org.rut.util.algorithm.support; I4'mU$)U
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import org.rut.util.algorithm.SortUtil; ! Ra.DSL
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/** )IUeWR
* @author treeroot <aps)vF
* @since 2006-2-2 7"}<J7"})
* @version 1.0 <P&~k\BuF{
*/ !ceT>i90h
public class BubbleSort implements SortUtil.Sort{ I4]|r k9
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/* (non-Javadoc) qK}4r5U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7_t\wmvYp
*/ ygt7;};!
public void sort(int[] data) { cRYnQ{$'
int temp; PDN3=PAR/A
for(int i=0;i for(int j=data.length-1;j>i;j--){ E]eVoC
if(data[j] SortUtil.swap(data,j,j-1); gG"W~O)yv
} E"LSM]^^<f
} MExP'9
} !uaV6K
} $`7cs}#
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yHIh8
} OVr,
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选择排序: zY?GO"U"
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package org.rut.util.algorithm.support; tK9_]663
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import org.rut.util.algorithm.SortUtil; 5Ym/'eT
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/** z}I4m
* @author treeroot $nR1AOm}.B
* @since 2006-2-2 8m? 9?OV5
* @version 1.0 C>%2'S^.b
*/ bWc3a
public class SelectionSort implements SortUtil.Sort { }e}J6[wP
wc#+Yh6
/* M%dJqwH5{
* (non-Javadoc) 5xJyW`SWz
* wNsAVUjLe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @^g/`{j>J
*/ 'FB?#C %U
public void sort(int[] data) { 2-G he3
int temp; 6"+/Imb-
for (int i = 0; i < data.length; i++) { &\(p<TF
int lowIndex = i; lq2Ah=FuN
for (int j = data.length - 1; j > i; j--) { J%|!KQl
if (data[j] < data[lowIndex]) { 25xpq^Zw
lowIndex = j; eKdF-;
} D ff0$06Nq
} ,sEu[m
SortUtil.swap(data,i,lowIndex); XA8{N
} X+l&MD
} $JKR,
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} rLMjN#`^
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Shell排序:
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5GD6%{\O
package org.rut.util.algorithm.support; w2BIf[~t
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import org.rut.util.algorithm.SortUtil; "9=F/o9
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/** $[zy|Y(
* @author treeroot HWe?vz$4"
* @since 2006-2-2 !acm@"Ea
* @version 1.0 BR1oE3in
*/ l{U-$}
public class ShellSort implements SortUtil.Sort{ 9b`J2_ ]k
U=_O*n?N-d
/* (non-Javadoc) XA`<*QC<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .PyPU]w
*/ |Sg
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public void sort(int[] data) { xE/r:D#
for(int i=data.length/2;i>2;i/=2){ Nh7Dz
for(int j=0;j insertSort(data,j,i); 8v&4eU'S
} \B _g=K
} JA!O,4
insertSort(data,0,1); 6?-vj2,
} Kyy CS>
/15e-(Zz/
/** g_z%L?N
* @param data n W2[x;
* @param j u<`CkYT
* @param i r5ONAa3.
*/ ?m3,e&pB5
private void insertSort(int[] data, int start, int inc) { zyNg?_SM
int temp; N*.JQvbnr
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c}9.Or`?
} YGVj$\
} NP%Y\%;l6
} |G.|ocj;
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} CB(Qy9C%h[
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快速排序: 2/.Euf
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package org.rut.util.algorithm.support; gC-3ghmgS
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import org.rut.util.algorithm.SortUtil; b/N+X}VMN
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/** h
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* @author treeroot >"qnuv G
* @since 2006-2-2 R
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* @version 1.0 <uXZ*E
*/ cPcp@Dp
public class QuickSort implements SortUtil.Sort{ _97A9wHj
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/* (non-Javadoc) P qFK*^)s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }:UNL^e?
*/ #QdBI{2
public void sort(int[] data) { @y,pfWh`
quickSort(data,0,data.length-1); d_CY=DHF%`
} D+Osz
private void quickSort(int[] data,int i,int j){ 7MXi_V;p<
int pivotIndex=(i+j)/2; eR,ePyA;
file://swap 5[Sa7Mk
SortUtil.swap(data,pivotIndex,j); }?zy*yL
0Da9,&D
int k=partition(data,i-1,j,data[j]); }^).Y7{g[
SortUtil.swap(data,k,j); -LAYj:4
if((k-i)>1) quickSort(data,i,k-1); %5|awWo_?
if((j-k)>1) quickSort(data,k+1,j); 5VWyc9Q
Q/EHvb]
} }E626d}uA
/** [R$iX
* @param data G}B)bM2
* @param i aw
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* @param j s!*m^zx
* @return |l)z^V!
*/ o+e:HjZZ
private int partition(int[] data, int l, int r,int pivot) { };5d>#NK,Y
do{ ?kfLOJQ:I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QXTl'.SfF
SortUtil.swap(data,l,r); 8]U;2H/z
} GAK!qLy9
while(l SortUtil.swap(data,l,r); nM*-Dy3ou
return l;
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} %3B0s?,I
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} R
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改进后的快速排序: 4-RzWSFbo`
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package org.rut.util.algorithm.support; L4bx [
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import org.rut.util.algorithm.SortUtil; kk6Af\NZ
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/** rr/0pa$
* @author treeroot iYwzdW1
* @since 2006-2-2 <Sm@ !yx
* @version 1.0 F Xbf7G)H
*/ F@</Ev
public class ImprovedQuickSort implements SortUtil.Sort { .EJo9s'
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private static int MAX_STACK_SIZE=4096; '6Lw<#It
private static int THRESHOLD=10; ] B
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/* (non-Javadoc) \.m"u14[b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6M({T2e
*/ >K<n~;ON|
public void sort(int[] data) { `_`\jd@
int[] stack=new int[MAX_STACK_SIZE]; xaQO=[
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int top=-1; IGKF&s*;{[
int pivot; rVo0H.+N)`
int pivotIndex,l,r; |$AoI
@)"= b!q=
stack[++top]=0; N@Fof(T&
stack[++top]=data.length-1; 3zdm-5R.b
9 b?Nlk8d
while(top>0){ X8l|^[2F
int j=stack[top--]; 2`2S94'
int i=stack[top--]; >"}z
% #
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pivotIndex=(i+j)/2; (e,5
b
pivot=data[pivotIndex]; >M~wFs$~
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SortUtil.swap(data,pivotIndex,j); =8Bq2.nlR
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Q}
file://partition h!>K[*
l=i-1; 3m2hB%SNb
r=j; 2h:*lV^
do{ jv<C#0E^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ze?(N~
SortUtil.swap(data,l,r); D\"F ?>
} Dht,!LVb;
while(l SortUtil.swap(data,l,r); Zt3Y<3o
SortUtil.swap(data,l,j); .(2Zoa
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if((l-i)>THRESHOLD){ g#??Mz
stack[++top]=i; d5 U?*
stack[++top]=l-1; yu^n;gWH
} /b
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if((j-l)>THRESHOLD){ i'6>_,\(
stack[++top]=l+1; kim qm
stack[++top]=j; f`^\v
} reO^_q'
xzI?'?duC
} 295U<
file://new InsertSort().sort(data); UoD@ix&0
insertSort(data); ggQB Q/ L
} cq?&edjP
/** N51g<K
* @param data `fL81)!jI#
*/ y,YK Mc
private void insertSort(int[] data) { DrY5Q&S
int temp; C VyYV &U,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iUH{rh!
} *'BA#
/@
} Hea76P5$P+
} ug?])nO.C
z[E gMS!
} . #7B10
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归并排序: [UW%(N
AJ%x"
package org.rut.util.algorithm.support; E <O:
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import org.rut.util.algorithm.SortUtil; ]CL9N
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/** QP%*`t?
* @author treeroot :)P Aj
* @since 2006-2-2 D=!e6E<>@
* @version 1.0 jdEqa$CXG
*/ ){_D
public class MergeSort implements SortUtil.Sort{ ]TTQ;F
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/* (non-Javadoc) [WAnII
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -\2T(3P
*/ reU*apZ/
public void sort(int[] data) { qRX:eo
int[] temp=new int[data.length]; GELxS!
mergeSort(data,temp,0,data.length-1); F:vHbs `y
} {&qB!axj
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private void mergeSort(int[] data,int[] temp,int l,int r){ dM^1O-K:
int mid=(l+r)/2; }}cS-p
if(l==r) return ; 3%J7_e'
mergeSort(data,temp,l,mid); $%%K9Y
mergeSort(data,temp,mid+1,r); yn;sd+:z
for(int i=l;i<=r;i++){ 4/Wqeq,E8
temp=data; .&Q'aOg
} X-mhz3Q&a
int i1=l; O!
t>
@%)
int i2=mid+1; i#RT4}l"a
for(int cur=l;cur<=r;cur++){ en1NFP
if(i1==mid+1) jQ 'r};;
data[cur]=temp[i2++]; E7c!KJ2
else if(i2>r) 5|pPzEA>
data[cur]=temp[i1++]; U>@st="
else if(temp[i1] data[cur]=temp[i1++]; HK/T`p#
else <"SOH;w
data[cur]=temp[i2++]; 55<f
} $Qc`4x;N
} r^2>60q'
"F.0(<4)
} 1(;_1@P
":G\
改进后的归并排序: $vQ#ah/k
<)J83D0$E
package org.rut.util.algorithm.support; Js706
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import org.rut.util.algorithm.SortUtil; lCznH?[
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/** foi@z9
* @author treeroot W
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* @since 2006-2-2 {~lVe GBp
* @version 1.0 6y4&nTq[
*/ s>VpbJ3S
public class ImprovedMergeSort implements SortUtil.Sort { (
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4J"S?HsW|
private static final int THRESHOLD = 10; 2L!wbeTb;
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/*
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* (non-Javadoc) rda/
* tt=JvI9>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *nj={Ss&
*/ x'c%w:
public void sort(int[] data) { 63EwV p/|
int[] temp=new int[data.length]; )nI}K QJ<
mergeSort(data,temp,0,data.length-1); l[G&=/R@H
} Rx}*I00
lO=Nw+'$S
private void mergeSort(int[] data, int[] temp, int l, int r) { &:3uK`
int i, j, k; A5A4*.C
int mid = (l + r) / 2; oXQzCjX_
if (l == r) 4=T.rVS[
return; k/hD2tBLu
if ((mid - l) >= THRESHOLD) GO|1O|?
mergeSort(data, temp, l, mid); zFn!>Tqe
else qVvQ9?
insertSort(data, l, mid - l + 1); 8H%-/2NW
if ((r - mid) > THRESHOLD) fH#*r|~
mergeSort(data, temp, mid + 1, r); Hw(_l,Xf
else gHB*u!w7Z
insertSort(data, mid + 1, r - mid); s\CZ os&
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for (i = l; i <= mid; i++) { +kMVl_`V
temp = data; >l!#_a
} tz).] E
D
for (j = 1; j <= r - mid; j++) { 0pC}+
+
temp[r - j + 1] = data[j + mid]; 9ozK}Cg4
} 5f` a7R
int a = temp[l]; _~{Nco7T
int b = temp[r]; T&ECGF;Y/
for (i = l, j = r, k = l; k <= r; k++) { YEbB3N
if (a < b) { I"4Lma
data[k] = temp[i++]; d,c8ks(
a = temp; Xq"_^
} else { |3a1hCxt
data[k] = temp[j--]; ?bq S{KF
b = temp[j]; 4dB6cg
} B*zR/?U^
} g}vOp3^
} s%{8$>8V.
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/** D.i(Irqw!
* @param data _0v+g1x
* @param l P?zPb'UVqa
* @param i &V$qIvN$
*/ tm"9`
private void insertSort(int[] data, int start, int len) { cEP!DUo
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "M GX(SQ
} RSK~<Y@]q{
} 5Oa`1?C1
} zm&D#)
} ~)ZMGx
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堆排序: <;O-N=
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package org.rut.util.algorithm.support; *Y4[YnkPE
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~
import org.rut.util.algorithm.SortUtil; F7FUoew<
O!,WH?r
/** @scy v@5)F
* @author treeroot Eeumi#$Z
* @since 2006-2-2 k^JV37;bl
* @version 1.0 ke+3J\;>
*/ @1`!}.Tk
public class HeapSort implements SortUtil.Sort{ _RT JEG
WDM^rjA|j
/* (non-Javadoc) xg|\\i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y@T0
jI
*/ rx$B(z(c
public void sort(int[] data) { N=JZtf/i
MaxHeap h=new MaxHeap(); /K@_O\+;Q
h.init(data); c}QWa"\2n
for(int i=0;i h.remove(); L.E6~Rv
System.arraycopy(h.queue,1,data,0,data.length); d*Wg>8|
} pX\Y:hCug
65 P*Gu?
private static class MaxHeap{ Pl>BTo>p'
hk +@ngh%
void init(int[] data){ LNA5!E
this.queue=new int[data.length+1]; ^|P/D
for(int i=0;i queue[++size]=data; ']x`d
fixUp(size); '
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} bm</qF'T6
} 8Hdm(>
\\Z{[{OZ
private int size=0; ib-)T7V`
^#V7\;v$G
private int[] queue; Fm| h3.`V
[myIcLp^aP
public int get() { Xf"B\%,(`
return queue[1]; oZ/z{`
} vi4lmkyh^
mPmg6Qj(W
public void remove() { IwTAM9n
SortUtil.swap(queue,1,size--); ^z _m<&r
fixDown(1); 0+iaO"%
} fH>I/%
file://fixdown <
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private void fixDown(int k) { =!~6RwwwY
int j; FxkxV GZ"
while ((j = k << 1) <= size) { >l$qE
if (j < size %26amp;%26amp; queue[j] j++; mF6 U{=
if (queue[k]>queue[j]) file://不用交换 g]ct6-m
break; Wf}x"*
SortUtil.swap(queue,j,k); >$g+Gx\v4
k = j; i'\7P-a
} d,"6s=4(q
} H[u[3
private void fixUp(int k) { v5/2-<6x
while (k > 1) { l>J>?b=x"[
int j = k >> 1; K,$Ro@!
if (queue[j]>queue[k]) 1B5]1&M
break; m,qMRcDF
SortUtil.swap(queue,j,k); 0o>l+c
k = j; qGYru1
} n6 VX0R
} v=Y)
A ?
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} fPj*qi
Ibbpy++d[
}
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+YNN$i
SortUtil: Vi5&%/Y
(pud`@D;[
package org.rut.util.algorithm; y?}R,5k
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import org.rut.util.algorithm.support.BubbleSort; w%NT
0J
import org.rut.util.algorithm.support.HeapSort; H*H=a
import org.rut.util.algorithm.support.ImprovedMergeSort; 'y?
HF@NJ
import org.rut.util.algorithm.support.ImprovedQuickSort; -IP 3I
import org.rut.util.algorithm.support.InsertSort; 8YLS/dN0 w
import org.rut.util.algorithm.support.MergeSort; %ylpn7I\6
import org.rut.util.algorithm.support.QuickSort; .>;}GsN&
import org.rut.util.algorithm.support.SelectionSort; 8A,="YIt
import org.rut.util.algorithm.support.ShellSort; ;V:Cf/@@R
N =0R6{'
/** 9si,z
* @author treeroot "{X_[
* @since 2006-2-2 uA1DTr?z
* @version 1.0 {-'S#04
*/ D,<#pNO_
public class SortUtil { uTq)Ets3
public final static int INSERT = 1; noLb
public final static int BUBBLE = 2; <zdo%~ba
public final static int SELECTION = 3; e|~s'{3
public final static int SHELL = 4; >8>}o4Q/X
public final static int QUICK = 5; P-*=e8z{
public final static int IMPROVED_QUICK = 6; j1hx{P'
public final static int MERGE = 7; S$egsK"~
public final static int IMPROVED_MERGE = 8; (!iGQj(m
public final static int HEAP = 9; ?->&)oAh
F,l%SQCyj
public static void sort(int[] data) { c~=yD:$
sort(data, IMPROVED_QUICK); @U;U0
} Wt8=j1>
private static String[] name={ 4 -dV%DgC
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (q|EC;
}; Ov5*&*P
?t{ 2y1
private static Sort[] impl=new Sort[]{ )b_
GKA
`
new InsertSort(), h+!
new BubbleSort(), mEM/}]2
new SelectionSort(), *G,'V,?
new ShellSort(), ]*Tnu98G}
new QuickSort(), ,aLdW,<6
new ImprovedQuickSort(), C6neZng
new MergeSort(), F~Z~OqCS
new ImprovedMergeSort(), eK]$8l|LI
new HeapSort() K#LG7faj
}; ,cqZb0VP{t
nYv`{0S+m
public static String toString(int algorithm){ ~_YU%y
return name[algorithm-1]; D]h~\
} t'F_1P^*/
4XprVB
public static void sort(int[] data, int algorithm) { "++q.y
impl[algorithm-1].sort(data); .vbUv3NI
} NIQX?|;b{
D#~S<>u@
public static interface Sort { ^z^ UFW
public void sort(int[] data); r,` 5 9
} u,rieKYF
NSPa3NE
public static void swap(int[] data, int i, int j) { %](H?'H
int temp = data; 96&Y
data = data[j]; eZr}xo@9
data[j] = temp; mOUIGlv
} O+o4E?}
} @YMQbjbr