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。 0`VA}c
插入排序: 1ml>
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; V|[Y9<*
/** ]yI~S(
* @author treeroot tk=~b}8
* @since 2006-2-2 *%'nlAX6%
* @version 1.0 whFaL}2C
*/ =E$Hq4I
public class InsertSort implements SortUtil.Sort{ Cn+'!?!d,
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/* (non-Javadoc) 6WUP#c@{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU|=" #
*/ ~Y;_vU
public void sort(int[] data) { d0ZbusHHb
int temp; 86+nFk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X|]&K
} yvN;|R
} ~Psv[b=]
} )/uu~9SFd
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} &\K p_ AR
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冒泡排序: 3pQ^vbQ"
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package org.rut.util.algorithm.support; 1=NP=ZB
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import org.rut.util.algorithm.SortUtil; +E5EOo{ `|
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/** aG&ay3[&
* @author treeroot Mzfuthq=@
* @since 2006-2-2 )Pj8{.t4
* @version 1.0 Owt|vceT
*/ zNg8Oq&
public class BubbleSort implements SortUtil.Sort{ v>ygr8+C,
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/* (non-Javadoc) FH Hi/yh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (c3%rM m]
*/ m~$S ]Wf
public void sort(int[] data) { &v}c3wL]
int temp; #0*OkZMt
for(int i=0;i for(int j=data.length-1;j>i;j--){ Dq$co1eT
if(data[j] SortUtil.swap(data,j,j-1); bIs@CDB
} y*6-?@
} s}m.r5
} %p wpRD@
} QVEGd"WvvO
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} 8y$c\Eu(mF
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选择排序: 83~9Xb=!\
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package org.rut.util.algorithm.support; .LQvjK[N
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import org.rut.util.algorithm.SortUtil; @)hrj2Jw
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/** s"jNS1B
* @author treeroot T][r'jWQ
* @since 2006-2-2 cx_.+ R
* @version 1.0 R\VM6>SN'S
*/ ICbT{Mla
public class SelectionSort implements SortUtil.Sort { IJnh@?BC
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/* }iu(-{Z
* (non-Javadoc) 97XGJ1HI
* Z3jtq-y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B+
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*/ aC9PlKI
public void sort(int[] data) { S zqY@
int temp; BkO)hze
for (int i = 0; i < data.length; i++) { 4R8W ot
int lowIndex = i; +|SvJ
for (int j = data.length - 1; j > i; j--) { Po+tk5}''5
if (data[j] < data[lowIndex]) { c<T'_93
lowIndex = j; VlLc[eVV
} d7O\p(M1
} !Eof7LUE
SortUtil.swap(data,i,lowIndex); <kY||
} ]t'bd<O
} ,:G3 Y
)
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} P#8]m(
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Shell排序: 9S_N*wC.
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; GiF})e}
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/** vU|.Gw
* @author treeroot %uV bI'n)
* @since 2006-2-2 dE[_]2];P
* @version 1.0 @Z50S 8
*/ Gkfc@[Z V
public class ShellSort implements SortUtil.Sort{ .W9/*cZV0
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/* (non-Javadoc) Sn_zhQxG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tG{?
*/ x:Nd>Fb
public void sort(int[] data) { :2n(WXFFI
for(int i=data.length/2;i>2;i/=2){ *C 0gpEf9S
for(int j=0;j insertSort(data,j,i); CYxrKW
l:'
} S dI/
} 7+h*&f3>
insertSort(data,0,1); wn$:L9"YN
} 4-YXXi}
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/** q|8p4X}/]
* @param data wu2AhMGmw
* @param j h/CF^0m"!
* @param i $_.m<
*/ ji &*0GJQ
private void insertSort(int[] data, int start, int inc) { )kE(%q:*P$
int temp; #=MQE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]:Q7Gys
} d\cwUXf
J
} K%p*:P
} /&+6nOP
qM$~5uu
} ItoSORVV
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快速排序: 9t$%Tc#Z
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package org.rut.util.algorithm.support; [SW@ "C!
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import org.rut.util.algorithm.SortUtil; LX
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/** 's]+.3">L1
* @author treeroot B) 81mcy
* @since 2006-2-2 Oc]&1>M
* @version 1.0 l7]$Wc[
*/ z"eh.&T
public class QuickSort implements SortUtil.Sort{ ?gSk%]S/!
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/* (non-Javadoc) x+O}R D*G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @'EP$!c
*/ LRhq%7p7
public void sort(int[] data) { Xcq9*!%o
quickSort(data,0,data.length-1); -9S.G
} O ).1>
private void quickSort(int[] data,int i,int j){ #0-!P+c[
int pivotIndex=(i+j)/2; JuGQS24
file://swap 5T[9|zJs
SortUtil.swap(data,pivotIndex,j); 328(W
':7%@2Zo
int k=partition(data,i-1,j,data[j]); Q7y6</4f
SortUtil.swap(data,k,j); -S=Zsr\
if((k-i)>1) quickSort(data,i,k-1); HA{-XPAWZ
if((j-k)>1) quickSort(data,k+1,j); _+,2b:D:
`9QrkkG+
} F:/R'0
/** t9&z|?Vz
* @param data E(T6s^8
* @param i xNNoB/DR
* @param j ta+'*@V+G
* @return i\S } aCm
*/ qj71
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private int partition(int[] data, int l, int r,int pivot) { Ru?Ue4W^b
do{ Av*R(d=`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (BC3[R@/l
SortUtil.swap(data,l,r); 9?*BN\E5S
} 'aB0abr|
while(l SortUtil.swap(data,l,r); o} #nf$v(
return l; S.+)">buH
} V*l0|,9
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} (k"oV>a|
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改进后的快速排序: DytOS}/^9
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package org.rut.util.algorithm.support; =+{.I,g}g@
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import org.rut.util.algorithm.SortUtil; ZkYc9!anY
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/** {uO8VL5+Qx
* @author treeroot 9p!V?cH#8
* @since 2006-2-2 ]{OEU]I@
* @version 1.0 XN"V{;OP1
*/ ?lb1K'(
public class ImprovedQuickSort implements SortUtil.Sort { Gvt.m&_
*seKph+'c
private static int MAX_STACK_SIZE=4096; I~S`'()J
private static int THRESHOLD=10; .2hQ!)+
/* (non-Javadoc) f8! PeQ?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l;L&ijTQD
*/ oll~|J^sg
public void sort(int[] data) { (Jfi 3 m
int[] stack=new int[MAX_STACK_SIZE]; v&(X&q
2
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int top=-1; }H{{ @RU
int pivot; 1vu4}%nD
int pivotIndex,l,r; h*hV
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stack[++top]=0; ]Bs ?
stack[++top]=data.length-1; 5;V#Z@S
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while(top>0){ uLb-
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int j=stack[top--]; dUn8Xqj1
int i=stack[top--]; d@"eWvnlZ
-!MDYj +U
pivotIndex=(i+j)/2; ew4IAF
pivot=data[pivotIndex]; o lNL|WJ`w
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j
SortUtil.swap(data,pivotIndex,j); 8N(bLGUG
*|Re,cY
file://partition ~0fT*lp
l=i-1; AEi@t0By
r=j; 3WJ> T1we
do{ v?<x"XKR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ##u+[ !
SortUtil.swap(data,l,r); q yy.3-(
} 7F`QN18>(
while(l SortUtil.swap(data,l,r); 7&klX
SortUtil.swap(data,l,j); K 3&MR=#^
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if((l-i)>THRESHOLD){ ckt^D/c2
stack[++top]=i; CBSJY&:K
stack[++top]=l-1; ;sNyN#
} _dsd{&
if((j-l)>THRESHOLD){ @V]
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stack[++top]=l+1; >
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stack[++top]=j; (eJr-xZ/
} {H $\,
dqUhp_f2qK
} c ~YD|l
file://new InsertSort().sort(data); ^V_acAuS^
insertSort(data); V{Idj\~Jh
} ItKwB+my
/** 1elcP`N1
* @param data 2O9dU 5b
*/ R^](X*
private void insertSort(int[] data) { )gR14a
int temp; M)EKS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =Mn![
} z}C#+VhQ`
} 35RH|ci&
} NfR, m]
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} v.6"<nT2
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归并排序: :v{$]wg
92Ar0j]
package org.rut.util.algorithm.support; >Fx$Rty
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import org.rut.util.algorithm.SortUtil; #A]7cMZ'W
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/** gSR&CnqZ<
* @author treeroot dhK$XG
* @since 2006-2-2 a4`@z:l
* @version 1.0 _5U
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*/ bvG").8$
public class MergeSort implements SortUtil.Sort{ &v4w3'@1
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/* (non-Javadoc) $o]zNW;X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ ?tAt3dMI
*/ mkE*.I0=
public void sort(int[] data) {
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int[] temp=new int[data.length]; 5\=9&{WjND
mergeSort(data,temp,0,data.length-1); ts?b[v
} ,C&h~uRi#f
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private void mergeSort(int[] data,int[] temp,int l,int r){ lBG*P>;
int mid=(l+r)/2; <u2*(BM4
if(l==r) return ; fy_'K}i3k
mergeSort(data,temp,l,mid); ]; ^OY\,
mergeSort(data,temp,mid+1,r); #(aROTV5a
for(int i=l;i<=r;i++){ p6Z]oL q
temp=data; \|62E):i1
} +o'. !sRH
int i1=l; "bf8[D
int i2=mid+1; 34;c00
for(int cur=l;cur<=r;cur++){ n"FOCcTIs
if(i1==mid+1) (sqS(xIY
data[cur]=temp[i2++]; ljt1:@SN(
else if(i2>r) 3:Z(tM&-O
data[cur]=temp[i1++]; cC}s5`
else if(temp[i1] data[cur]=temp[i1++]; @bqCs^U35
else ?sS'T7r
v
data[cur]=temp[i2++]; -S,dG|
} YSa:"A
} hq,;H40%/
[tD*\\IA
} iBo-ANnK9
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改进后的归并排序: o~4n8
!zJ.rYZ=g`
package org.rut.util.algorithm.support; c(Ha"tBJ
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import org.rut.util.algorithm.SortUtil; {eZj[*P
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/** ok6e=c '
* @author treeroot :T{or-
* @since 2006-2-2 /XMmE
* @version 1.0 GrQl3 Xi
*/ 8V|-BP5^
public class ImprovedMergeSort implements SortUtil.Sort { jQ^Ib]"K
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private static final int THRESHOLD = 10; >8JvnBFx=
OT *W]f
/* .ERO*Tj
* (non-Javadoc) w`7l;7[
* c=b\9!hr_E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YD+C1*c!
*/ O,OGq0c
public void sort(int[] data) { [ThzLk#m
int[] temp=new int[data.length]; bs`/k&'
mergeSort(data,temp,0,data.length-1); wcL0#[)
} A.h?#%TLL
8U(a&G6gn
private void mergeSort(int[] data, int[] temp, int l, int r) { ffB]4
int i, j, k; xK
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int mid = (l + r) / 2; A&M/W'$s
if (l == r) >u/yp[Ky
return; >b$<lo
if ((mid - l) >= THRESHOLD)
;<][upn
mergeSort(data, temp, l, mid); )?xt=9Lh
else F"F(s!
insertSort(data, l, mid - l + 1); /Z@.;M
if ((r - mid) > THRESHOLD) CTP%
mergeSort(data, temp, mid + 1, r); cq=R
else }>1E,3A:%G
insertSort(data, mid + 1, r - mid); 4dok/ +Ec
Qdn:4yk
for (i = l; i <= mid; i++) { -qEr-[z
temp = data; W
,U'hk%
} NkJ^ecn%)
for (j = 1; j <= r - mid; j++) { y(S0
2v>l
temp[r - j + 1] = data[j + mid]; jF5JpyOc
} B~ez>/H^
int a = temp[l]; .F6#s
int b = temp[r]; b;O+QRa
for (i = l, j = r, k = l; k <= r; k++) { xD#/@E1'Y
if (a < b) { .iYg RW=T
data[k] = temp[i++]; @t^2/H
?O
a = temp; <|_Ey)1
6
} else { JQ1VCG
data[k] = temp[j--]; >I!(CM":s$
b = temp[j]; zc{C+:3$^
} "D/ fB%h`
} 8`~]9ej
} 4HHf3j!5
k^]~NP
/** ;i:7E#@
* @param data '
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* @param l ,-"]IR!,w
* @param i }* t~&l0
*/ cs5Xd
private void insertSort(int[] data, int start, int len) { p~b$+8#+
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w '"7~uN
} 3OZ}&[3
} :W&\})
} {h=Ai[|l4Q
} pZjFpd|
[~o3S$C&7
堆排序: -+=8&Wa
Ygl!fC
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package org.rut.util.algorithm.support; {HU48v"W
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import org.rut.util.algorithm.SortUtil; :
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/** *k}d@j,*"
* @author treeroot ~h/U ;Da
* @since 2006-2-2 FN
R&
:
* @version 1.0 gkdjH8(2
*/ o(zg_!P
public class HeapSort implements SortUtil.Sort{ L }mhMxOTi
%Fv)$ :b
/* (non-Javadoc) #? *jdN:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d0^2<
*/ +x2xQ8#|~~
public void sort(int[] data) { P:vy
MaxHeap h=new MaxHeap(); O+N-x8W{
h.init(data); <gy'@w?
for(int i=0;i h.remove(); 0d2%CsMS"D
System.arraycopy(h.queue,1,data,0,data.length); T,fz/5w
} z|2liQrf+
KOQTvJ_#
private static class MaxHeap{ Bz{
g4!ku
/b|sv$BN
void init(int[] data){ xpk|?/6
this.queue=new int[data.length+1]; {;zPW!G
for(int i=0;i queue[++size]=data; k
y98/6
fixUp(size); c>Se Onf
} ;GAYcVB
} 2$91+N*w9
1rEP)66N
private int size=0; Xwi&uyvU&
TG9)x|!
private int[] queue; UPYM~c+}
bqO"k t
public int get() { 1#(1Bs6X
return queue[1]; !iw
'tHhR
} ^~ Sn{esA
f+V':qz
public void remove() { "->:6Oe2
SortUtil.swap(queue,1,size--); B(falmXJ
fixDown(1); ~-+Zu<
} L DsYr]
file://fixdown FScQS.qF
private void fixDown(int k) { ?>Aff`dHY
int j; TRZ^$<AG
while ((j = k << 1) <= size) { vF&b|V+,
if (j < size %26amp;%26amp; queue[j] j++; Nz;;X\GI
if (queue[k]>queue[j]) file://不用交换 c0 |p34
break; tp<V OUa
SortUtil.swap(queue,j,k); [P/gM3*'
k = j; v(i Uo&Ge
} sfa'\6=O
} sFQ|lU" n
private void fixUp(int k) { 3_$eQ`AAA
while (k > 1) { Ub,unU
int j = k >> 1; "}! rM6 h
if (queue[j]>queue[k]) {76!
break; R=PzR;8
SortUtil.swap(queue,j,k); ^ne8~
;Q
k = j; 7,TWCVap
} ~|rkt`8p
} jGn^<T\
L|LTsRIq
} )^TQedF
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} cy 4'q?r
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SortUtil: l'QR2r7&.
TeJ
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package org.rut.util.algorithm; iC]lO
UD{/L"GG
import org.rut.util.algorithm.support.BubbleSort; OX4D'
import org.rut.util.algorithm.support.HeapSort; )*ckJK
import org.rut.util.algorithm.support.ImprovedMergeSort; =]e^8;e9
import org.rut.util.algorithm.support.ImprovedQuickSort; +pvJ?"J
import org.rut.util.algorithm.support.InsertSort; Br5Io=/wg
import org.rut.util.algorithm.support.MergeSort; !Yu-a!
import org.rut.util.algorithm.support.QuickSort; $4
Uy3C+6
import org.rut.util.algorithm.support.SelectionSort; !\1 W*6U8;
import org.rut.util.algorithm.support.ShellSort; -(1\`g07
.h,xBT`}Ji
/** KU,w9<~i(
* @author treeroot rzDJH:W{2
* @since 2006-2-2 4&e@>
* @version 1.0 |@.<}/
*/ BA,6f?ktXS
public class SortUtil { s.' \&B[
public final static int INSERT = 1; p;$9W+H0
public final static int BUBBLE = 2; : !3 y>bP)
public final static int SELECTION = 3; Nl`ry2"<
public final static int SHELL = 4; C4]%pi
public final static int QUICK = 5; 5#.\pR{Gd
public final static int IMPROVED_QUICK = 6; vc#oALc&
public final static int MERGE = 7; v v/,Rgv
public final static int IMPROVED_MERGE = 8; ^z^e*<{WEl
public final static int HEAP = 9; I!gj; a?R
9
w1ONw8v
public static void sort(int[] data) { ?bAFYF0!I
sort(data, IMPROVED_QUICK); A@(h!Cq
} T+R I8.#o
private static String[] name={
'*u;:[73
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \_nmfTr!K
}; yPYJc
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private static Sort[] impl=new Sort[]{ #Hi]&)p_
new InsertSort(), @BUqQ9q:
new BubbleSort(), AijTT%
new SelectionSort(), $?AA"Nz
new ShellSort(), A(OfG&!
new QuickSort(), }Xj_Y]T
new ImprovedQuickSort(), d~-p;i
new MergeSort(), *)1Vs'!-
new ImprovedMergeSort(), Wxau]uix
new HeapSort() [P=[hj;
}; o!`O
i5
Wx$q:$h@q
public static String toString(int algorithm){ FJ8@b
return name[algorithm-1]; BK9x`Oo 2
} qO{ ZZ*
2,V+?'^j
public static void sort(int[] data, int algorithm) { PMhhPw]
impl[algorithm-1].sort(data); jUvA<r
} L~y t AZ,
'h>5&=r
public static interface Sort { lc7a@qnw
public void sort(int[] data); bDBO+qA
} 8`2<g0V2
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public static void swap(int[] data, int i, int j) { 5;8B!%b
int temp = data; X|E+K
data = data[j]; rw[ {@|)'z
data[j] = temp; A]Tcj^#
} ,GkW. vEU
} An #Hb=