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。 vaB ql(?'2
插入排序: hWy@?r.
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package org.rut.util.algorithm.support; i"<W6
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import org.rut.util.algorithm.SortUtil; Cx2#
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/** )95k3xo
* @author treeroot zP44
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* @since 2006-2-2 UQu6JkbLL
* @version 1.0 ;].X;Ky<
*/ f8;?WSGyD2
public class InsertSort implements SortUtil.Sort{ 6.)ug7aF
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/* (non-Javadoc) >=0]7k;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "K(cDV Q
*/ v%:deaF
public void sort(int[] data) { Uoe{,4T
int temp; xq((]5P y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q$U5[TZm
}
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} [h'u@%N|/
} 0OM^,5%8
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} O.+J%],
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冒泡排序: %C/p+Tg
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package org.rut.util.algorithm.support; fn,n'E]
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import org.rut.util.algorithm.SortUtil; a<&K^M&
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/** A&M_ J
* @author treeroot Pdf-2
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* @since 2006-2-2 "kP,v&n
* @version 1.0 .z gh,#=
*/ RxqNgun@
public class BubbleSort implements SortUtil.Sort{ ><}nZ7
Z9DfwWI2nu
/* (non-Javadoc) 7*PBJt\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ye3o}G9z
*/ <J<"`xKL
public void sort(int[] data) { :XhF:c[.:
int temp; +g
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 486\a
if(data[j] SortUtil.swap(data,j,j-1); jQV[zcM
} _-C/sp^
} He=C\"
} 5.\p]>|G1
} qob!AU|
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} >pp/4Ia!
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选择排序: D>y5&`
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package org.rut.util.algorithm.support; Ef`'r))
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import org.rut.util.algorithm.SortUtil; >UCg3uFj
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/** OdFF)-K>~
* @author treeroot 7<)H?;~;
* @since 2006-2-2 rNk'W, FU
* @version 1.0 |~5cNm
*/ C4(xtSJSd!
public class SelectionSort implements SortUtil.Sort { #$Zx ].[lc
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@jtD*c)
/*
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* (non-Javadoc) <q=Zg7zB
* hZ 1enej)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kzn1ct{65!
*/ w8X5kk
public void sort(int[] data) { 4m<]qw
int temp; aM
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for (int i = 0; i < data.length; i++) { JlnmG<WLT
int lowIndex = i; ]B )nN':
for (int j = data.length - 1; j > i; j--) { lC#wh2B6
if (data[j] < data[lowIndex]) { EK4%4<"
lowIndex = j; |^-D&C(Eu
} ,^G+<T6
} ^<!R%"o-
SortUtil.swap(data,i,lowIndex); MZ}0.KmaZ
} zd5=W"Y;]
} 6#Z]yk+p
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} +\Vw:~e
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Shell排序: ML>M:Ik+
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package org.rut.util.algorithm.support; RK.lzVaY
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import org.rut.util.algorithm.SortUtil; T^;b98*
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/** 9KX% O-'
* @author treeroot HK :K~h
* @since 2006-2-2 UdrgUqq)
* @version 1.0 %j^QK>%
*/ -ZE YzZqY
public class ShellSort implements SortUtil.Sort{ we_CF*zj
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/* (non-Javadoc) MxpAh<u!vF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FQ0&{ulb
*/ aUNA`
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public void sort(int[] data) { r5xm7- `c
for(int i=data.length/2;i>2;i/=2){ 'l(s)Oa{M:
for(int j=0;j insertSort(data,j,i); h rSH)LbJ
} }~W/NP_F
} 2n3&uvf'TL
insertSort(data,0,1); 5 <k)tF%
} zV}:~;w
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/** s3sRMB2
* @param data 9^DAlY,x.
* @param j FNUs
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* @param i m
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*/ $B?8\>_?
private void insertSort(int[] data, int start, int inc) { )w4U]inJ$"
int temp; kk`K;`[tB
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gd
* b0(
} .+S%hT,v6i
} q`mxN!1[
} Vj4 h#NN$
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} Eb~vNdPo
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快速排序: pNd`fV#jX
h._eP.W `
package org.rut.util.algorithm.support; dBA&NW07
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import org.rut.util.algorithm.SortUtil; 6I RRRt O(
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/** \},H\kK+^
* @author treeroot .aO6Y+Y
* @since 2006-2-2 9b >+ehj B
* @version 1.0 w tGS"L
*/ i. )^}id
public class QuickSort implements SortUtil.Sort{ @D-I@Cyl
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/* (non-Javadoc) H.|I|XRG/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pf'DbY!
*/ ##''d||u
public void sort(int[] data) { |pZ7k#%
quickSort(data,0,data.length-1); hzk!H]>E
} .! <yTh
private void quickSort(int[] data,int i,int j){ VDOC>
int pivotIndex=(i+j)/2; rb@[Edj
file://swap Z[VrRT,\c
SortUtil.swap(data,pivotIndex,j); 1o/(fy
[xY-=-T*4
int k=partition(data,i-1,j,data[j]); /-!Fr:Ox>
SortUtil.swap(data,k,j); [)}P{y
[&
if((k-i)>1) quickSort(data,i,k-1); DqY"N]
if((j-k)>1) quickSort(data,k+1,j); $k)K}U
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} .?CaU
/** } *)l
* @param data |APOTQV
* @param i v&G9HiH
* @param j &a'mG=(K_c
* @return %CnVK1u!
*/ jFg19C{=X
private int partition(int[] data, int l, int r,int pivot) { vh&~Y].W Y
do{ H0tu3Pqk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d, g~.iS~
SortUtil.swap(data,l,r); c}$>UhLe
} [ <d~b*/
while(l SortUtil.swap(data,l,r); y`$qcEw
return l; KM)MUPr
} `L$Av9X\
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} >pZ_
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改进后的快速排序: #t1? *4.p
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package org.rut.util.algorithm.support; ~t2"L|i
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import org.rut.util.algorithm.SortUtil; yn+m,K/
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/** D@sMCR
* @author treeroot %.Btf3y~
* @since 2006-2-2 8zRw\]?
* @version 1.0 Ow1+zltgj-
*/ Y
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public class ImprovedQuickSort implements SortUtil.Sort { [7x;H
SF:{PgGMi
private static int MAX_STACK_SIZE=4096; %r6_['T
private static int THRESHOLD=10; Xo(W\Pes
/* (non-Javadoc) $l.8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Gb^%1%M
*/ 9`/ywt3Y
public void sort(int[] data) { hiVDN"$$
int[] stack=new int[MAX_STACK_SIZE]; tMU10=d
:-+][ [
int top=-1; :T6zT3(")D
int pivot; 8Rw:SU9H?T
int pivotIndex,l,r; uCW}q.@4
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stack[++top]=0; <MO40MP
stack[++top]=data.length-1; OmK0-fa/
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while(top>0){ /;Cx|\
int j=stack[top--]; Z$Ps_Ik
int i=stack[top--]; wU]8hkl?
*WzPxQ_
pivotIndex=(i+j)/2; Y8s-cc(
pivot=data[pivotIndex]; j;Lp@~M
gQ '=mU
SortUtil.swap(data,pivotIndex,j); )i39'0a
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file://partition zYPvpZV/
l=i-1; 7~MWp4.
r=j; kz#x6NXj
do{ c&RiUU7
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); n#GHa>p.-
SortUtil.swap(data,l,r); )086u8w )y
} [daR)C
while(l SortUtil.swap(data,l,r); Y\1& Uk
SortUtil.swap(data,l,j); [)[?FG9
)d
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if((l-i)>THRESHOLD){ 9%P$e=Ui#
stack[++top]=i; I.6#>=
stack[++top]=l-1; ]%Whtj.,x7
} L<<v
if((j-l)>THRESHOLD){ eBECY(QMQ
stack[++top]=l+1; tnmz5Q
stack[++top]=j; |@>Zc5MY$
} c3Ig4 n0Y>
Q6X}R,KA1
} /KJWo0zo
file://new InsertSort().sort(data); giddM2'
insertSort(data); TlQ5'0&I
} ^&c|z35F
/** Z q}Cl'f
* @param data {\!@k\__
*/ /8(t:
private void insertSort(int[] data) { =6w(9O
int temp; 5i3nz=~o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qp1rP#
} s.}:!fBk
} ~Oj-W6-+&,
} A56aOI=
a<D]Gz^h
} n-lDE}K9%B
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归并排序: dI8y}EbE~
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package org.rut.util.algorithm.support; b(g?X
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import org.rut.util.algorithm.SortUtil; p7)b@,
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/** A832z`
* @author treeroot 7\;gd4Ua1
* @since 2006-2-2 [Hp"a^~r|
* @version 1.0 h|=&a0
*/ {5:V
hW}
public class MergeSort implements SortUtil.Sort{ <~qhy{hRn
t3$+;K(
/* (non-Javadoc) i_;]UvP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (kI@U![u
*/ +4p gPv
public void sort(int[] data) { d5B96;3
int[] temp=new int[data.length]; O/Wc@Ln
mergeSort(data,temp,0,data.length-1); _52BIrAO2
} xSHeP`P^X
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private void mergeSort(int[] data,int[] temp,int l,int r){ B\!.o=<h
int mid=(l+r)/2; V0WFh=CM@
if(l==r) return ; n\y%5J+
mergeSort(data,temp,l,mid); PizPsJ|&
mergeSort(data,temp,mid+1,r); 5zBsu lRt
for(int i=l;i<=r;i++){ f9 b=Zm'
temp=data; wKAc ;!
} #G ZGk?
int i1=l; W|kKH5E&
int i2=mid+1; `5Qo*qx
for(int cur=l;cur<=r;cur++){ Y;'7Ek)
if(i1==mid+1) Ot}
E
data[cur]=temp[i2++]; pYs"Y;%
else if(i2>r) D ~Y3\KP
data[cur]=temp[i1++]; m<;&B
else if(temp[i1] data[cur]=temp[i1++]; \YBY"J
else uB:utg
data[cur]=temp[i2++]; 9m
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} B/CP/Pfb
} 7MT[fA8^
DjjG?(1
} [sY>ac
MW+]w~7_Q
改进后的归并排序: =kvYE,,g_
<3>Ou(F
package org.rut.util.algorithm.support; LPk85E
i=<N4Vx
import org.rut.util.algorithm.SortUtil; @BN cIJk9
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/** 5xHl6T+
* @author treeroot eID"&SSU
* @since 2006-2-2 %o+VZEH3
* @version 1.0 |!)3[<.
*/ `1KZ14K
public class ImprovedMergeSort implements SortUtil.Sort { *r+i=i8{
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private static final int THRESHOLD = 10; s Hu~;)
+S:(cz80V
/* ;%#@vXH[Oo
* (non-Javadoc) wYS,|=y
* ht S5<+Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cj}1 )qWq
*/ vF;%#P
public void sort(int[] data) { Px}#{fkS
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); c)M_&?J!5
} R
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private void mergeSort(int[] data, int[] temp, int l, int r) { n5%rsNxg
int i, j, k; ;#!`cgAh
int mid = (l + r) / 2; G)?O!(_
if (l == r) J%;TK6
return; %?C{0(Z{
if ((mid - l) >= THRESHOLD) H>`?S{J
mergeSort(data, temp, l, mid); 59p'Ega.
else fdN-Zq@'
insertSort(data, l, mid - l + 1); l0b Y
if ((r - mid) > THRESHOLD) ]RQQg,|D
mergeSort(data, temp, mid + 1, r); OXzJ%&h
else (6?pBdZ
insertSort(data, mid + 1, r - mid); "S^;X
@#v
'UT 4x9&z
for (i = l; i <= mid; i++) { <Dt,FWWkv'
temp = data; lvb0dOmY
} PS@`
=Z
for (j = 1; j <= r - mid; j++) { X{ZBS^M
temp[r - j + 1] = data[j + mid]; EZc!QrY
} r%$-F2.p
int a = temp[l]; zie])_8|h
int b = temp[r]; ][6$$Lz
for (i = l, j = r, k = l; k <= r; k++) { HH2*12e
if (a < b) { [cru+c+O:
data[k] = temp[i++]; ."PR Z,
a = temp; ALwkX"AN
} else { v)+wr[Qs
data[k] = temp[j--]; M&y!w
b = temp[j]; ?U2ed)zzw
} RWXj)H)w
} n\.K:t[:
} As1Er[>
?'$=G4y&?
/** OgS6#X
* @param data x"v5'EpL
* @param l _d]w)YMO
* @param i 5}~*,_J2Z
*/ i,FG?\x@
private void insertSort(int[] data, int start, int len) { ~7b'4\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1p23&\\~
} <k5FlvE2
} ]<4Yor}t{;
} AzN.vA)q
} JXGIVH?Rpu
&.+[~2
堆排序: 6k42>e*p
[lQp4xgxi
package org.rut.util.algorithm.support; 3>0/WbA:7E
,^,Vq]$3
import org.rut.util.algorithm.SortUtil; -t?S:9[w
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/** /pFg<
* @author treeroot \"_;rJ{!aE
* @since 2006-2-2 8:L%-
* @version 1.0 W&z.O
*/ 8S@ ~^D
public class HeapSort implements SortUtil.Sort{ 5 &-fX:/
H4KwbTT"+
/* (non-Javadoc) \@['V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "a5?cX;
*/ ^P:9iu)+]~
public void sort(int[] data) { vjZX8KAiZ
MaxHeap h=new MaxHeap(); K,|Gtaa~
h.init(data); 0FjSa\ZH
for(int i=0;i h.remove(); |j^>6nE
System.arraycopy(h.queue,1,data,0,data.length); 6VQ*z8wLw
} d~S.PRg=
=NF},j"
private static class MaxHeap{ ]Vl*!,(i
z mrk`o~
void init(int[] data){ C
n\'sb{
this.queue=new int[data.length+1]; W5_t/_EWD
for(int i=0;i queue[++size]=data; }.o
rfW
fixUp(size); yXppu[=
} 5$GE 3IER8
} \KLWOj%
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private int size=0; :5U(}\dL{
Z?XE~6aP>
private int[] queue; V{{b^y
I@+dE V`Lf
public int get() { 8Th|'
return queue[1]; `"zX<
} O#Xq0o
b,KQG|k
public void remove() { ZaH<\`=%
SortUtil.swap(queue,1,size--); m,Q<4'
fixDown(1); T"in
} h+,zfVJu
file://fixdown {{SQL)yJ
private void fixDown(int k) { @]Iku 6d-
int j; PM7*@~.
while ((j = k << 1) <= size) { `Kpn@Xg
if (j < size %26amp;%26amp; queue[j] j++; E:&=A 4%
if (queue[k]>queue[j]) file://不用交换 Z7K;~*
break; BGLJ>zkq
SortUtil.swap(queue,j,k); asj^K|.z
k = j; k/j]*~"
} d01bt$8>
} V. =! ^0'A
private void fixUp(int k) { 6n
while (k > 1) { :f 1*-y
int j = k >> 1; ::9U5E;!
if (queue[j]>queue[k]) dL |D
break; G9N6iKP!
SortUtil.swap(queue,j,k); #)GL%{Oa
k = j; *S:^3{.m=
} lyF~E
} -PBm@}*
9p+DAs{i
} jC@$D*"J
eqZ V/a
} A%k@75V@
s34{\/'D+
SortUtil: k9.@S
9K@`n:Rw
package org.rut.util.algorithm; {tOu+zy
*q=pv8&*s
import org.rut.util.algorithm.support.BubbleSort; Q\<C9%a
import org.rut.util.algorithm.support.HeapSort; #[qmhU{s
import org.rut.util.algorithm.support.ImprovedMergeSort; g"`BNI]Qp
import org.rut.util.algorithm.support.ImprovedQuickSort; (5cc{zKtR
import org.rut.util.algorithm.support.InsertSort; Rd&2mL
import org.rut.util.algorithm.support.MergeSort; O B_g:T
import org.rut.util.algorithm.support.QuickSort; i,8h
B(M!
import org.rut.util.algorithm.support.SelectionSort; ;;2XLkWu
import org.rut.util.algorithm.support.ShellSort; ]p\7s
}/4 AT
/** :p;!\4)u
* @author treeroot lr=? &>MXj
* @since 2006-2-2 eY-W5TgU
* @version 1.0 Zz!XH8sH
*/ o:.={)rX
public class SortUtil { g"EvMv&
public final static int INSERT = 1; |cEJRs@B
public final static int BUBBLE = 2; -Ds}kdxw
public final static int SELECTION = 3; 3%bCv_6B
public final static int SHELL = 4; }TzMWdT
public final static int QUICK = 5; ~pO6C*"
public final static int IMPROVED_QUICK = 6; }%c2u/PQ
public final static int MERGE = 7; E/v.+m
public final static int IMPROVED_MERGE = 8; JF!JY( U,
public final static int HEAP = 9; ]>tYU
LBq~?Q.e
public static void sort(int[] data) { ] JVs/
sort(data, IMPROVED_QUICK); )a
AKO`
} ~Z9Eb|B
private static String[] name={ 9]< p
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eee77.@y-p
}; {_&'tXL
#` Q3Z}C
private static Sort[] impl=new Sort[]{ 48hu=,)81*
new InsertSort(), ,m;S-Im_Xr
new BubbleSort(), $N'AZY]4]
new SelectionSort(), 8n+&tBq1
new ShellSort(), G0oY`WXOB
new QuickSort(), 3=5K7F
new ImprovedQuickSort(), 5\gL+qM0
new MergeSort(),
Yz(k4K
L
new ImprovedMergeSort(), ~P8 6=Vw
new HeapSort() f!%G{G^`
}; Veo*-sl
Aslh}'$}-
public static String toString(int algorithm){ U_i%@{
return name[algorithm-1]; \UA\0p
} 8mj Pa^A
Yv<'QC
public static void sort(int[] data, int algorithm) { =lT~
impl[algorithm-1].sort(data); a~q_2S]h
} R[KF${X4
h
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public static interface Sort { !~Vo'ykwx'
public void sort(int[] data); wNo2$>*
} l r80RL'_
/kV3[Rw+
public static void swap(int[] data, int i, int j) { 'NJGez'b,
int temp = data; \d"JYym
data = data[j]; R=&9M4
data[j] = temp; KYE)#<V}@
} lS@0 $
} \ #<.&`8B