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。 R4)l4rnO
插入排序: vR#MUKfh
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package org.rut.util.algorithm.support; OWfB8*4@
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import org.rut.util.algorithm.SortUtil; 9(X~
/** !<h9XccN
* @author treeroot L})fYVX
* @since 2006-2-2 G,6`:l
* @version 1.0 |CQjgI|;
*/ +R$;LtR
public class InsertSort implements SortUtil.Sort{ AvIheR
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/* (non-Javadoc) h+dk2|a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )y!gApNs"
*/ 3bLOT#t
public void sort(int[] data) { s(5(zcBK
int temp; ?N+pWdi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _ZWU~38PM
} 6V9r[,n
} IY~I=}
} 4`5W] J]6
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} 3>5gh8!-
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冒泡排序: R))4J
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package org.rut.util.algorithm.support; W }Ll)7(|T
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import org.rut.util.algorithm.SortUtil; @VND}{j
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/** )abH//Pps.
* @author treeroot !oRN,m[7)p
* @since 2006-2-2 $^e_4]k
* @version 1.0 DjZTr}%q
*/ f/kYm\Zc
public class BubbleSort implements SortUtil.Sort{ 7k#>$sY+
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/* (non-Javadoc) fP;I{AiN~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GAR6nJCz
*/ Vw.4;Zy(
public void sort(int[] data) { J1r\Cp+h0
int temp; X)TZ S
for(int i=0;i for(int j=data.length-1;j>i;j--){ A|mE3q=
if(data[j] SortUtil.swap(data,j,j-1); PJKxh%J
} :-2sKD y
} L]X Lv9J0
} ]G!
APE
} 'oBv(H
A6;[r #C
} |jWA >S
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选择排序: DfOigLG*
:h0!giqoQ
package org.rut.util.algorithm.support; Qc
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import org.rut.util.algorithm.SortUtil; : T4ap_Ycq
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/** 3=Xvl 58k
* @author treeroot xnZ
* @since 2006-2-2 EL
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* @version 1.0 Nw1 .x
*/ *z'Rl'j9[
public class SelectionSort implements SortUtil.Sort { hz2f7g
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/* fhHTp_u)2
* (non-Javadoc) P6'0:M@5
* ~4 S6c=:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } f!wQxb
*/ Kna@K$6{w=
public void sort(int[] data) { \3t)7.:4
int temp; AUU(fy#<
for (int i = 0; i < data.length; i++) { b Sg]FB aW
int lowIndex = i; &3 ~R-$P
for (int j = data.length - 1; j > i; j--) { TU2MG VYy
if (data[j] < data[lowIndex]) { Pi[(xD8
lowIndex = j; M%eTNsbNm
} lzz68cT
} H M\}C.u
SortUtil.swap(data,i,lowIndex); [}l
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} ?zXlLud8
} .6i +_B|
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} ^X*l&R_=R
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Shell排序: cPl$N5/5
Kku@!lv
package org.rut.util.algorithm.support; wD<W'K
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import org.rut.util.algorithm.SortUtil; m?)F@4]
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/** *^%ohCUi
* @author treeroot %G] W Oq=q
* @since 2006-2-2 P9# }aw+
* @version 1.0 <
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*/ J\ ?
public class ShellSort implements SortUtil.Sort{ LC/%AbM
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/* (non-Javadoc) %B# 8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {<Vw55)#0Q
*/ h`:gMhn
public void sort(int[] data) { }4*~*NoQ
for(int i=data.length/2;i>2;i/=2){ e({-.ra
for(int j=0;j insertSort(data,j,i); _4t
} k'd=|U;(FV
} T!H }^v
insertSort(data,0,1); 4V5h1/JPm
} F)tcQO"G
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/** qP[jtRIN
* @param data L8KMMYh[
* @param j (M t-2+"+
* @param i f@xjNm*'Z
*/ &m@DK>
private void insertSort(int[] data, int start, int inc) { v}"DW?
int temp; DIc -"5~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); safI`bw1
} gs= (h*
} b U>.Bp]
} 0a's[>-'A
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} ca$K)=cDW
A!`Q[%$
快速排序: h Qbz}x
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package org.rut.util.algorithm.support; bX&=*L+h6
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import org.rut.util.algorithm.SortUtil; Bjsg!^X7
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/** (,
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* @author treeroot >o!~T}J7
* @since 2006-2-2 J?bx<$C@
* @version 1.0 CF@j]I@{
*/ s\
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public class QuickSort implements SortUtil.Sort{ 'di(5
/.[78:G\,
/* (non-Javadoc) hW-?j&yJ?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e:RgCDWL
*/ XRWy#Pj
public void sort(int[] data) { A>J,Bi
quickSort(data,0,data.length-1); a.s5>:Ct
} ' u4TI=[6
private void quickSort(int[] data,int i,int j){ .d%CD`8!
int pivotIndex=(i+j)/2; @7,k0H9Moa
file://swap rW0-XLbL5H
SortUtil.swap(data,pivotIndex,j); |jTRIMj%,_
: ]~G9]R`
int k=partition(data,i-1,j,data[j]); ~myY-nEY
SortUtil.swap(data,k,j); ^1,VvLA+
if((k-i)>1) quickSort(data,i,k-1); HO9w"){d$
if((j-k)>1) quickSort(data,k+1,j); c`_[q{(^m
\zyvu7YA
} IkJ-*vI6
/** 2umgF
* @param data 96S#Q*6+R
* @param i S/7?6y~
* @param j UB|}+WA3
* @return nK9?|@S*'
*/ o",J{
private int partition(int[] data, int l, int r,int pivot) { _ "H&
do{ y^hCO:`l3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); p`06%"#
SortUtil.swap(data,l,r); Lk1e{!a
} v_e3ZA:%
while(l SortUtil.swap(data,l,r); c^EU&q{4
return l; F>s5<pKAX
} Fhk`qh'i
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} 9._owKj
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改进后的快速排序: &O.lIj#FR
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package org.rut.util.algorithm.support; [,/~*L;7
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import org.rut.util.algorithm.SortUtil; )TzQ8YpO}
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/** R&]#@PW^
* @author treeroot *32hIiCm
* @since 2006-2-2 p5\B0G<m
* @version 1.0 g.T:72"
*/ swLrp
74
public class ImprovedQuickSort implements SortUtil.Sort { 8XdgtYm
S!+}\*
private static int MAX_STACK_SIZE=4096; eNX!EN(^
private static int THRESHOLD=10; 6_kv~`"t Z
/* (non-Javadoc) :pvJpu$]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9B?-&t
*/ .I
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public void sort(int[] data) { _%:$sAj
int[] stack=new int[MAX_STACK_SIZE]; M#;"7Qg
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int top=-1; b,uudtlH
int pivot; EN;s
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int pivotIndex,l,r; =WM^i86
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stack[++top]=0; 'j(F=9)
stack[++top]=data.length-1; 'Uu!K!
)4e?-?bK!
while(top>0){ kBg8:bo~
int j=stack[top--]; aGq1YOD[$
int i=stack[top--]; q1?}G5a?
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9>
pivotIndex=(i+j)/2; Gqs)E"h
pivot=data[pivotIndex]; Tqj:C8K{
D,P{ ,/
SortUtil.swap(data,pivotIndex,j); JK'FJ}Z4
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file://partition yr/G1?k%ML
l=i-1; S^T
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r=j; 7B{LRm6;Vu
do{ d=d*:<Zx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7oV$TAAf
SortUtil.swap(data,l,r); P+bA>lJd
} !!?TkVyEyM
while(l SortUtil.swap(data,l,r); ~EtwX YkRZ
SortUtil.swap(data,l,j); a|eHo%Qt
VMIX=gTZ
if((l-i)>THRESHOLD){ 7-#
stack[++top]=i; #Ic)]0L
stack[++top]=l-1; +o-jMvK9
} o&ETs)n|
if((j-l)>THRESHOLD){ +^|_vq^XR
stack[++top]=l+1; w;;9YFBdM
stack[++top]=j; #gsJ
tT9
} cPy/}A
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} Oe
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file://new InsertSort().sort(data); xtO#reL"q?
insertSort(data); }\0ei(%H
} g+A>Bl3#
/** O+OUcMa,
* @param data ACOn}yH
*/ gE: ?C2
private void insertSort(int[] data) { v6P2v
int temp; f9D01R fo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =~_
} D9h
} dVe,;?+A
} Q>(a JF
QtQbr*q@%
} =}zSj64
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归并排序: 0p]v#z}
/]oQqZHv
package org.rut.util.algorithm.support; e2^TQv2(=e
% 'OY
import org.rut.util.algorithm.SortUtil; _Wqy,L;J
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/** }`.d4mm
* @author treeroot &EmG\vfE
* @since 2006-2-2 {B-*w%}HU
* @version 1.0 IGNU_w4j
*/ ,&.$r/x|?
public class MergeSort implements SortUtil.Sort{ >#VNA^+t
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/* (non-Javadoc) :g ~_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 3zE5vr
*/ h:RP/0E
public void sort(int[] data) { }i{A4f`
int[] temp=new int[data.length]; <*(^QOM
mergeSort(data,temp,0,data.length-1); l];/,J^
} 6n^@Ps
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private void mergeSort(int[] data,int[] temp,int l,int r){ u4j"U6"]M
int mid=(l+r)/2; Y>6N2&Q
if(l==r) return ; )2a)$qx;
mergeSort(data,temp,l,mid); ]I_*+^?tI
mergeSort(data,temp,mid+1,r); aW-6$=W
for(int i=l;i<=r;i++){ Wdi`ZE
temp=data; 0SDnMij&bf
} #%EHcgF
int i1=l;
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int i2=mid+1; (x
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for(int cur=l;cur<=r;cur++){ ``%yVVg}
if(i1==mid+1) .$@+ /@4
data[cur]=temp[i2++]; 2VzYP~Jg
else if(i2>r) >,[@SF%
data[cur]=temp[i1++]; q=}1ud}1
else if(temp[i1] data[cur]=temp[i1++]; DD2K>1A1
else .+,U9e:%
data[cur]=temp[i2++]; "9 f+F
} "([/G?QAG
} U*b7 Pxq;
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} IVY)pS"pR"
@{W"mc+
改进后的归并排序: R0%M9;>1
AmC?qoEWQ7
package org.rut.util.algorithm.support; zy5FO<->
n*Uk<_WA
import org.rut.util.algorithm.SortUtil; .G#li(NWH
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/** |c^ ?tR<
* @author treeroot 1jej7p>K
* @since 2006-2-2 `nKN|6o#x
* @version 1.0 ^=5x1<a9$
*/ +IO>%
public class ImprovedMergeSort implements SortUtil.Sort { H8B$#.
z:4_f:70
private static final int THRESHOLD = 10; GC:q6}
@$~IPg[J
/* n}I?.r@e
* (non-Javadoc) &gPP#D6A
* &O^-,n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [q Uv|l1
*/ vxHFNGI
public void sort(int[] data) { r!
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int[] temp=new int[data.length]; X
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mergeSort(data,temp,0,data.length-1); 7f4O~4.[i
} x x4GP2
N#2ldY *
private void mergeSort(int[] data, int[] temp, int l, int r) { GX0zirz
int i, j, k; n}j6gN! O
int mid = (l + r) / 2; 9!
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if (l == r) a{.q/Tbt
return; px"H
if ((mid - l) >= THRESHOLD) X\/M(byn
mergeSort(data, temp, l, mid); #-@uLc
else .p, VZ9
insertSort(data, l, mid - l + 1); 6y~F'/ww
if ((r - mid) > THRESHOLD) Rq%Kw> {&
mergeSort(data, temp, mid + 1, r); Q2D!Agq=D
else @0 /qP<E
insertSort(data, mid + 1, r - mid); -sfv"?
;}j(x;l>t
for (i = l; i <= mid; i++) { w7o`BR
temp = data; naW!b&:
} >W;NMcN~
for (j = 1; j <= r - mid; j++) { a5GLbanF
temp[r - j + 1] = data[j + mid]; #
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} [ r8 ZAS
int a = temp[l]; U!`iKy-
int b = temp[r]; B+snHabS6
for (i = l, j = r, k = l; k <= r; k++) { !TJ,:c]4{!
if (a < b) { C!a1.&HHZ7
data[k] = temp[i++]; 9&5<ZC-D
a = temp; ".tL+A[
} else { Ff%V1BH[
data[k] = temp[j--]; -X~mW
b = temp[j]; Cf3!Ud
} qS2Nk.e]o
} Z sTtSM\Ac
}
dw3Hk$"h
z8'1R6nq
/** M{Z
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* @param data m$kQbPlatN
* @param l lOk8VlH<h
* @param i 9MYk5q.X:
*/ =y4dR#R(\
private void insertSort(int[] data, int start, int len) { b1KtSRLV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *Bq}.Yn
} s:Ml\['x
} +7^p d9F.
} XS [L-NHG
} Ch_rV+
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堆排序: b1.*cIv}
w_xca(
package org.rut.util.algorithm.support; ~DI$O[KpR%
:Iv;%a0 -
import org.rut.util.algorithm.SortUtil; ksOGCd^G7
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/** >w@+cUto
* @author treeroot q8?kBKP
* @since 2006-2-2 {K]5[bMT
* @version 1.0 4=xi)qF/@
*/ kkF)Tro\
public class HeapSort implements SortUtil.Sort{ ]:59c{O
^ RA'E@"
/* (non-Javadoc) hPDKxYD]f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~lys
*/ X,7y| tb
public void sort(int[] data) { 6!ve6ZB[p
MaxHeap h=new MaxHeap(); K Lg1(W(
h.init(data); 3}0\W.jH
for(int i=0;i h.remove(); 6'r8.~O
System.arraycopy(h.queue,1,data,0,data.length); DPTk5o[
} .$%p0Yx+
,erf{"Nh
private static class MaxHeap{ s9;6&{@%wO
$(aq;DR
void init(int[] data){ _1p8(n
this.queue=new int[data.length+1]; 0N.h: 21(4
for(int i=0;i queue[++size]=data; !hBpon
fixUp(size); jO-?t9^
} @h%V:c
} 4VWk/HK-!
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private int size=0; RZm%4_p4s
[@vz0!@s5
private int[] queue; NQk aW)
GiV%Hcx
public int get() { zTF{ g+
return queue[1]; O?JJE8~']
} NXU:b"G
S
V&M*,#(?
public void remove() { 1cLtTE
SortUtil.swap(queue,1,size--); d(T4Kd$r
fixDown(1); {r,Uik-nL
} wA=r]BT
file://fixdown ,#A(I#wL~
private void fixDown(int k) { Ymk?@mV4
int j; Gt9$hB7
while ((j = k << 1) <= size) { 2 |s ohF
if (j < size %26amp;%26amp; queue[j] j++; (^d7K:-'
if (queue[k]>queue[j]) file://不用交换 Je1d|1!3
break; bbK};u
SortUtil.swap(queue,j,k); lLx!_h
k = j; q@|+`>h
} n/+X3JJ
} /BL:"t@-
private void fixUp(int k) { nT6y6F_e
while (k > 1) { ,,'jyqD
int j = k >> 1; H}^ '
if (queue[j]>queue[k]) <v_=k],W
break; UN]gn>~j
SortUtil.swap(queue,j,k); 8M,*w6P
k = j; eqo0{e
} !eLj +0
} ti\
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1 em,/>"
} za>UE,?h
t]yxLl\
} OXEk{#Uf[3
Z2% HQL2
SortUtil: z M9#1^X
=)[m[@,c
package org.rut.util.algorithm; =q4}(
rFRcK>X\L
import org.rut.util.algorithm.support.BubbleSort; >
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import org.rut.util.algorithm.support.HeapSort; -/yqiC-yx
import org.rut.util.algorithm.support.ImprovedMergeSort; %tCv-aX4
import org.rut.util.algorithm.support.ImprovedQuickSort; RgJ@J/p"
import org.rut.util.algorithm.support.InsertSort; Ys"wG B>
import org.rut.util.algorithm.support.MergeSort; /{i~CGc;"
import org.rut.util.algorithm.support.QuickSort; _4ag-'5
import org.rut.util.algorithm.support.SelectionSort; m>@hh#kBg
import org.rut.util.algorithm.support.ShellSort; -aoYoJ '
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/** p4'
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* @author treeroot &`"DG$N(
* @since 2006-2-2 $*yYmF
* @version 1.0 *]6g-E?:@
*/ o.+;]i}D
public class SortUtil { Dp@XAyiA[
public final static int INSERT = 1; ~ZHjP_5Q
public final static int BUBBLE = 2; PobX;Z
public final static int SELECTION = 3; gq+SM
i=
public final static int SHELL = 4; 1K72}Gj)ZL
public final static int QUICK = 5; @IT[-d
public final static int IMPROVED_QUICK = 6; bjZJP\6
public final static int MERGE = 7; {keZ_2
public final static int IMPROVED_MERGE = 8; a~$XD(w^
public final static int HEAP = 9; Z*,e<zNQ
i]JTKL{\q
public static void sort(int[] data) { ~f/|bcep
sort(data, IMPROVED_QUICK); D!<F^mtl
} [BWq9uE
private static String[] name={ L.Y3/H_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `KJ(. m
}; ZoW1Cc&p
VF%QM;I[Rc
private static Sort[] impl=new Sort[]{ B=_w9iVN
new InsertSort(), :ym?]EL4o
new BubbleSort(), pu-HEv}]a|
new SelectionSort(), wq)*bIv
new ShellSort(), {15j'Qwm
new QuickSort(), 7- B.<$uC
new ImprovedQuickSort(), o3J#hQrl
new MergeSort(), H;Wrcf2
new ImprovedMergeSort(), O[@!1SKT0
new HeapSort() 3]Z1kB
}; N5
ME_)
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public static String toString(int algorithm){ w:&""'E
return name[algorithm-1]; 2M
%j-yG"
} W5*ldXXk
5{c;I<0
public static void sort(int[] data, int algorithm) { %xt9k9=vZ
impl[algorithm-1].sort(data); X Xque-
} dkQ4D2W*\
(jc@8@Wo.
public static interface Sort { <2$vo
public void sort(int[] data); j\2Qe%d
} ?OD$`{1
GO"`{|o
public static void swap(int[] data, int i, int j) { > p`,
int temp = data; mH o#"tc
data = data[j]; ,7{|90'V<
data[j] = temp; ~q$]iwwqT
} [FFr}\}bY
} x/|W;8g4