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。 '<aFd)-
插入排序: P`y 0FKS
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package org.rut.util.algorithm.support; fH 0&Wc3yC
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import org.rut.util.algorithm.SortUtil; "FXT8Qxg
/** aq$adPtu
* @author treeroot X`0`A2
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* @since 2006-2-2 j12khp?
* @version 1.0 _j?/O)M
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*/ q&V=A[<rz
public class InsertSort implements SortUtil.Sort{ !z_VwZ#,
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/* (non-Javadoc) '
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y-G;;~
*/ 2@a]x(
public void sort(int[] data) { |^t8ct?x~
int temp; qW t 9Tr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 22"/|S
} [ FNA:
} S@eI3PkE
} 5#$5ct
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} QVQ?a&HYS
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冒泡排序: #AUa'qBt
ntEf-x<
package org.rut.util.algorithm.support; 5Y(f7,JX
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import org.rut.util.algorithm.SortUtil; y3pr(w9A
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/** Qh@A7N/L
* @author treeroot ypsT:uLT
* @since 2006-2-2 R{A$hnhW6
* @version 1.0 \k)(:[^FY
*/ U#1,]a\
public class BubbleSort implements SortUtil.Sort{ PV/SzfvIq
]BBL=$*
/* (non-Javadoc) "+:~#&r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &[4lP~
*/ VJ$UpqVm
public void sort(int[] data) { h` ,! p
int temp; d}RR!i`<N
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0s8w)%4$
if(data[j] SortUtil.swap(data,j,j-1); (lR9x6yf
} L/n?1'he
} 3erGTa[|q
} yZ]u{LJS
} and)>$)|
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} ?O<D&CvB
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选择排序: QSq0{
p2:>m\
package org.rut.util.algorithm.support; /htM/pR
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import org.rut.util.algorithm.SortUtil; ET 2@dY~
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/** mIX[HDy:V$
* @author treeroot O#962\
* @since 2006-2-2 zwa%$U
* @version 1.0 I>( \B| \6
*/ J"Z=`I)KON
public class SelectionSort implements SortUtil.Sort { #N'W+M /
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/* j6_tFJT
* (non-Javadoc) HM(S}>
* CFU'-
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +__PT4ps
*/ swh8-_[c/
public void sort(int[] data) { H<`<5M 8
int temp; <)dHe:
for (int i = 0; i < data.length; i++) { H]x-s
int lowIndex = i; ,s9gGCA
for (int j = data.length - 1; j > i; j--) { q&RezHK l
if (data[j] < data[lowIndex]) { KtO|14R:
lowIndex = j; -)p
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} 9_
} 9$[PAjwk
SortUtil.swap(data,i,lowIndex); :K)7_]y
} Qmg2lP.)
} /eO:1c
5SNa~
kC&
} ym=7EY?o
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Shell排序: [PW\l+i
ac%6eW0#
package org.rut.util.algorithm.support; W:gpcR]>
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import org.rut.util.algorithm.SortUtil; %Y:"5fH
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/**
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* @author treeroot ~Bi>T15e
* @since 2006-2-2 _* m<Z;Et
* @version 1.0 \~!!h.xR
*/ 8%ea(|Wjg
public class ShellSort implements SortUtil.Sort{ f)x(sk
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/* (non-Javadoc) Oe~x,=X)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + ;LO|!
*/ !ay:h
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public void sort(int[] data) { r&y0`M
for(int i=data.length/2;i>2;i/=2){ pv[Gg^
for(int j=0;j insertSort(data,j,i); K8bKTG \
} U5RLM_a@M
} A+w'quXn
insertSort(data,0,1); |W#(+m
} zo|
'
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/** e=^^TX`I
* @param data 1]A$
* @param j B%^W$7
q
* @param i uo8[,'
*/ MO>9A,&f
private void insertSort(int[] data, int start, int inc) { CBr(a'3{Z
int temp; 2<FEn$n[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #soV'SFG
} >I@VHl O
} ;l %$-/%
} lz7?Z
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} 21$E.x 6
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快速排序: {sfA$ d0
6Hp+?mmh
package org.rut.util.algorithm.support; Vak\N)=u
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import org.rut.util.algorithm.SortUtil; k-Yli21-/|
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/** bu9.HvT'
* @author treeroot M$48}q+
* @since 2006-2-2 BW:HKH.k
* @version 1.0 ysj5/wtO0
*/ r~z'QG6v/
public class QuickSort implements SortUtil.Sort{ RH.qbPjx
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/* (non-Javadoc) 3K=%I+G(4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '451H3LC0
*/ H$+@O-
public void sort(int[] data) { ^TtL-|I
quickSort(data,0,data.length-1); ]"&](e6*
} W,|+Dl
private void quickSort(int[] data,int i,int j){ g/FZ?Wo
int pivotIndex=(i+j)/2; ^Z-oO#)h#
file://swap o1vK2V
SortUtil.swap(data,pivotIndex,j); [l3ys
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int k=partition(data,i-1,j,data[j]); .g3=L
SortUtil.swap(data,k,j); %vv`Vx2
if((k-i)>1) quickSort(data,i,k-1); GsmXcBzDw2
if((j-k)>1) quickSort(data,k+1,j); 1uO2I&B
Sbl = U
} o]Xt2E
/** au04F]-|j8
* @param data |UlG@Mn
* @param i $~S~pvT
* @param j |his8\C+x
* @return /)T~(o|i
*/ f1]zsn:
private int partition(int[] data, int l, int r,int pivot) { n1JtY75#,/
do{ {l)$9!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5f{P% x(
SortUtil.swap(data,l,r); {#ynN`tLyF
} %@Z;;5 L
while(l SortUtil.swap(data,l,r); ^nK<t?KS
return l; lH;V9D^
} \nt~K}a
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} ~_-]>
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改进后的快速排序: w`;HwK$ ,
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package org.rut.util.algorithm.support; JwB'B
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import org.rut.util.algorithm.SortUtil; 58Ce>*~
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/** B
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* @author treeroot ZRG
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* @since 2006-2-2 ?0_<u4
* @version 1.0 W;'fAohr
*/ X>Vc4n<}
public class ImprovedQuickSort implements SortUtil.Sort { uMEM7$o
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private static int MAX_STACK_SIZE=4096; %(1OjfZc
private static int THRESHOLD=10; -B H/)$-$
/* (non-Javadoc) E=N$JM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uYMn VE"
*/ d/bimQ
public void sort(int[] data) { 9F>`M
int[] stack=new int[MAX_STACK_SIZE]; $Lr&V~
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int top=-1; Qds<j{2
int pivot; /[<F
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int pivotIndex,l,r; F(yR\)!C
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stack[++top]=0; nbF<K?
stack[++top]=data.length-1; nwU],{(Hgr
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while(top>0){ y#j7vO
int j=stack[top--]; =/Gd<qz3
int i=stack[top--]; ,*J@ic7"
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pivotIndex=(i+j)/2; )2Ei<
pivot=data[pivotIndex]; TQ]gvi|m
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SortUtil.swap(data,pivotIndex,j); !0W(f.A{K
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file://partition :)~l3:O
l=i-1; E`o_R=%
r=j; |9jK-F6
do{ a9-Mc5^'n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,VS\ mG/}s
SortUtil.swap(data,l,r); = LNU%0m
} a;xeHbE
while(l SortUtil.swap(data,l,r); I=kqkuW
SortUtil.swap(data,l,j); #<xFO^TB
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if((l-i)>THRESHOLD){ )#m{"rk[x,
stack[++top]=i; O2Qmz=%
stack[++top]=l-1; p<
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} (%X *b.n=
if((j-l)>THRESHOLD){ FBXktSg
stack[++top]=l+1; q`1tUd 4G
stack[++top]=j; k+9F;p7
} .V
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cb^IJA9}
} C~h#pAh
file://new InsertSort().sort(data); F_qApyU,7
insertSort(data); @rYZ0`E9
} OkciL]
/** VeWh9:"bJ
* @param data zDdo RK@
*/ @&m [w'tn
private void insertSort(int[] data) { ArtY;.cg%
int temp; Xex7Lr&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !V.]mI
} }ppApJT
} (2;Aqx5i
} 5;XC!Gz
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} -9om,U`t
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归并排序: &}u_e`A
wrkw,H
package org.rut.util.algorithm.support; u0wu\
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import org.rut.util.algorithm.SortUtil; Nf4@m|#
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/** @wXYza0|d
* @author treeroot .uA
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* @since 2006-2-2 XO;_F"H=
* @version 1.0 E/H9#
*/ a0ms9%Y;Q[
public class MergeSort implements SortUtil.Sort{ <W!T+sMQj
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/* (non-Javadoc) c^_+<C-F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bmHj)^v5]
*/ CRo@+p10
public void sort(int[] data) { bD
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int[] temp=new int[data.length]; S8v,'Cc
mergeSort(data,temp,0,data.length-1); Idu'+O4
} !IJ
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private void mergeSort(int[] data,int[] temp,int l,int r){ S>5w=RK
int mid=(l+r)/2; [ (Y@
if(l==r) return ; |$tF{\
mergeSort(data,temp,l,mid); t,Tq3zB
mergeSort(data,temp,mid+1,r); AIP0PJI3
for(int i=l;i<=r;i++){ XyB_8(/E
temp=data; .P8m%$'N
} =n.&N
int i1=l; W DnNVE
int i2=mid+1; 9F3aT'3#!
for(int cur=l;cur<=r;cur++){ + $M<ck?Bo
if(i1==mid+1) D8k >f ]
data[cur]=temp[i2++]; aAcQmq TT
else if(i2>r) QfjoHeG7
data[cur]=temp[i1++]; )[99SM
else if(temp[i1] data[cur]=temp[i1++]; #}6~>A
else bz:En'2>F
data[cur]=temp[i2++]; 0F<O \
} ?7cF_Zvve
} }>:x
gi7As$+E
} khb
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8P 3EQY-
改进后的归并排序: s.rS06x
e.0vh?{\
package org.rut.util.algorithm.support; eD, 7gC-
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import org.rut.util.algorithm.SortUtil; OwQ 9y<v
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/** zy#E qv
* @author treeroot NDRk%_Eu(
* @since 2006-2-2 dxkXt k
* @version 1.0 V&_5q`L
*/ 2WIbu-"l
public class ImprovedMergeSort implements SortUtil.Sort { x]k^JPX
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private static final int THRESHOLD = 10; >U9!KB
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/* 8@/]ki`>
* (non-Javadoc) 7BF't!-2F
* /v;g v[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tZ=BK:39\
*/ 0pu])[P]_[
public void sort(int[] data) { i<1w*yu
int[] temp=new int[data.length]; (>>pla^
mergeSort(data,temp,0,data.length-1); [8SW0wsk
} s+^o[R
T3
tB[(o%k
private void mergeSort(int[] data, int[] temp, int l, int r) { t_,iV9NrZ
int i, j, k; pp#Kb 2*
int mid = (l + r) / 2; R8\y|p#c
if (l == r) S,3e|-&$
return; ,vW.vq<{q3
if ((mid - l) >= THRESHOLD) akBR"y:~:H
mergeSort(data, temp, l, mid); ,h5.Si>
else $}OU~d1q
insertSort(data, l, mid - l + 1); v<tH 3I+
if ((r - mid) > THRESHOLD) 0} liK
mergeSort(data, temp, mid + 1, r); \p@,+ -gX
else n4k.tq
insertSort(data, mid + 1, r - mid); 9T|7edl
F^T7u?^)
for (i = l; i <= mid; i++) { zG@9-s* L
temp = data; / vje='[!
} \E?1bc{\f
for (j = 1; j <= r - mid; j++) { zmf5!77
temp[r - j + 1] = data[j + mid]; \#2,1W@
} Fdu0?H2TL
int a = temp[l]; 3x'BMAA+
int b = temp[r]; .w[]Q;K_[)
for (i = l, j = r, k = l; k <= r; k++) { r-&4<=C/N
if (a < b) { #N@sJyIN
data[k] = temp[i++]; ldi'@^
a = temp; 7(Y!w8q&^
} else { cKFzn+
data[k] = temp[j--]; R;'Pe>
b = temp[j]; 0=L:8&m
} qK;n>BTe
} ]W-:-.prh
} Z"% =
(#LV*&K%IC
/** e!G
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* @param data H:y.7
* @param l jD$T
* @param i QjF.U8
*/ )#IiHBF
private void insertSort(int[] data, int start, int len) { O' A''}M
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .5KRi6
} hY/SR'8
} "2N3L8?k
} `!>zYcmT
} 'hf-)\Ylf
YeYFPi#
堆排序: Wi
hQj
tjuW+5O
package org.rut.util.algorithm.support; .8b4
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import org.rut.util.algorithm.SortUtil; }[LK/@h
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/** !c SD9q*
* @author treeroot 'kH#QO\(e"
* @since 2006-2-2 -)y"EJ(N
* @version 1.0 /3KEX{'@U
*/ 2mU}"gf[
public class HeapSort implements SortUtil.Sort{ y{j>4g$:z
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/* (non-Javadoc) 5VG@Q%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nz!AR$
*/ Bj@&c>
public void sort(int[] data) { D|=QsWZI
MaxHeap h=new MaxHeap(); i3e|j(Gs4
h.init(data); 5)T{iPU%X
for(int i=0;i h.remove(); "H G:by
System.arraycopy(h.queue,1,data,0,data.length); zEO
9TuBO
} 0HNe44oI+D
/f# rN_4
private static class MaxHeap{ >@oO7<WB
?|s[/zPS=
void init(int[] data){ @F3 d9t-
this.queue=new int[data.length+1]; ?nt6vqaV
for(int i=0;i queue[++size]=data; C{2UPG4 x
fixUp(size); %+pXzw`B
} OcSLRN?t
} "4"L"lJ
Q| xPm:
private int size=0; rtzxMCSEU
b%)a5H(
private int[] queue; G 8NSBaZe
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public int get() { _@^msyoq
return queue[1]; P AKh v.7
} <?Lj!JGX
x1Si&0T0P<
public void remove() { F[ ? t"d
SortUtil.swap(queue,1,size--); D2?7=5DgS
fixDown(1); a(J~:wgd
} A$5!]+
file://fixdown LXK+WB/s
private void fixDown(int k) { 99ZQlX
int j; N86Hn]#
while ((j = k << 1) <= size) { W0nRUAo[
if (j < size %26amp;%26amp; queue[j] j++; u;Z~Px4]v
if (queue[k]>queue[j]) file://不用交换 54'z"S:W
break; FvvF4
,e5
SortUtil.swap(queue,j,k); YE^|G,]
k = j; Z#Zk)
} 1= <Qnmw
} R_Hdi~ k
private void fixUp(int k) { 4)"jg[
while (k > 1) { XS1>ti|<
int j = k >> 1; ^c!Hur6)
if (queue[j]>queue[k]) )P,jpE8
break; 0<P
-` |X
SortUtil.swap(queue,j,k); g!K(xhEO
k = j; QiZThAe
} \
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} r?Z8_5Y
2?m'Dy'JE
} WJg?R^
{j^}"8GB
} s*f.` A*)
h"ylpv+
SortUtil: m+UdT854
A] 9JbNV
package org.rut.util.algorithm; .7FI%
hl:eF:'hm
import org.rut.util.algorithm.support.BubbleSort; x,dv~QU
import org.rut.util.algorithm.support.HeapSort; aC:l;
import org.rut.util.algorithm.support.ImprovedMergeSort; <3}l8Z
import org.rut.util.algorithm.support.ImprovedQuickSort; <T[N.mB
import org.rut.util.algorithm.support.InsertSort; F21[r!3
import org.rut.util.algorithm.support.MergeSort; 5KR|p Fq
import org.rut.util.algorithm.support.QuickSort; W<VHv"?V
import org.rut.util.algorithm.support.SelectionSort; A.O~'')X
import org.rut.util.algorithm.support.ShellSort; %b;+/s2W
]LTc)[5Zj
/** ai4^NJn
* @author treeroot fJ2{w[ne
* @since 2006-2-2 SZ{cno1`
* @version 1.0 a7\L-T+
*/ hhAC@EGG
public class SortUtil { b]BA,D4
public final static int INSERT = 1; Z!reX6
public final static int BUBBLE = 2; _kN%6~+U
public final static int SELECTION = 3; :, [!8QP
public final static int SHELL = 4; o$VH,2 QF
public final static int QUICK = 5; ~iZF~PQ1_
public final static int IMPROVED_QUICK = 6; F |81i$R
public final static int MERGE = 7; B5HdC%8/}
public final static int IMPROVED_MERGE = 8; RCYbRR4y
public final static int HEAP = 9; -/c1qLdQ
tq[",&K
public static void sort(int[] data) { hX%v`8
sort(data, IMPROVED_QUICK); YO$b#
} Wmxw!
private static String[] name={ Z4ov
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w s>Iyw.u
}; [KI`e
!a(qqZ|s
private static Sort[] impl=new Sort[]{ h_G|.7!
new InsertSort(), 1r&
?J.z25
new BubbleSort(), vC<kpf!
new SelectionSort(), -^Km}9g
new ShellSort(), AJlIA[Kt:
new QuickSort(), _8pkejg
new ImprovedQuickSort(), n3g
WMC
new MergeSort(), G!LNP&~
new ImprovedMergeSort(), x ETVtq
new HeapSort() I+?$4SC
}; zGd*Q5l
O\F^@;]F6
public static String toString(int algorithm){ 5uJP)S?
return name[algorithm-1]; [-Tt11
} f9XO9N,hE:
r]EZ)qp^@
public static void sort(int[] data, int algorithm) { M(WOxZ8
impl[algorithm-1].sort(data); +6)kX4
} C\2 >7
UH,4b`b
public static interface Sort { qMdtJ(gq
public void sort(int[] data); ID).*@(I"
} WlRZ|.
aco}pXz
public static void swap(int[] data, int i, int j) { ;7^j-6
int temp = data; ~v(M6dz~vk
data = data[j]; grfdvN
data[j] = temp; q'AnI$!
} F;&fx(
} ?)o4 Kt'h