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。 )ciHY6
插入排序: 8TvPCZ$x
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package org.rut.util.algorithm.support; C#0Wo
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import org.rut.util.algorithm.SortUtil; =h!m/f^x
/** Sw)ftC~d
* @author treeroot GTe9@d
* @since 2006-2-2 I@+<[n2
* @version 1.0 Ut =y`]F
*/ |7fBiVo
public class InsertSort implements SortUtil.Sort{ =@MKU
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/* (non-Javadoc) nQ6'yd"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n|6yz[N
*/ jT0fF
public void sort(int[] data) { 3!x)LUWfWY
int temp; 7 #N
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jd*H$BU^
} fok#D>q
} t|lv6-Hy9
} )]R8
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} z{x -Vfd
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冒泡排序: jL$X3QS:
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package org.rut.util.algorithm.support; yvvR%]!.
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import org.rut.util.algorithm.SortUtil; ,sK-gw
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/** +L6$Xm5DAv
* @author treeroot NKws;/u
* @since 2006-2-2 }Of^Y@{q.
* @version 1.0 ;Wdo* ysW
*/ ovp>"VuC
public class BubbleSort implements SortUtil.Sort{ !;-x]_
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/* (non-Javadoc) lki(_@3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ W2^R$"U
public void sort(int[] data) { c9@*
int temp; z,WrLZC
for(int i=0;i for(int j=data.length-1;j>i;j--){ B!0[LlF+
if(data[j] SortUtil.swap(data,j,j-1); <V{BRRx
} s0CRrMk
} Zh$Z$85p
} (TPD!=
} _+i-)
9]iDNa/D
} +7w>ujeeJA
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选择排序: FB""^IC?W
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package org.rut.util.algorithm.support; P+xZaf
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import org.rut.util.algorithm.SortUtil; a%kj)ah
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/** lc^%:#@
* @author treeroot 8wOr`ho B
* @since 2006-2-2 w[XW>4xK
* @version 1.0 o?>)CAo
*/ ^VQiq7 xm
public class SelectionSort implements SortUtil.Sort { lWR
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/* fN9hBC@
* (non-Javadoc) j>U.(K
* u^uW<.#z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ${?Px
c{-
*/ V:lDR20*\
public void sort(int[] data) { wFe</U-';
int temp; wGB'c's*
for (int i = 0; i < data.length; i++) { @[^H*^1|g
int lowIndex = i; X@s s d
for (int j = data.length - 1; j > i; j--) { =LC5o2bLy
if (data[j] < data[lowIndex]) { T@L^RaPX
lowIndex = j; $]_=B Jyu
} GRNH!:e
} @{bf]Oc
SortUtil.swap(data,i,lowIndex); 90q*V%cS
} !U91
} XjV7Ew^7
FIuKX"XR
}
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Shell排序: 9O|m#&wa]
4:K9FqU
package org.rut.util.algorithm.support; f}fM%0/5
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import org.rut.util.algorithm.SortUtil; Q<M>+U;t
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/** MQI6e".
* @author treeroot ]`lTkh
* @since 2006-2-2 !$O +M#
* @version 1.0 $ (GXlhA
*/ {3l]/X3
public class ShellSort implements SortUtil.Sort{ >B iJ/[9
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/* (non-Javadoc) LEY$St
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $:>K-4X\}
*/
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public void sort(int[] data) { FN G]
for(int i=data.length/2;i>2;i/=2){ _- { > e
for(int j=0;j insertSort(data,j,i); EayZ*e]
} i`X/d=
} H=*;3gM,'
insertSort(data,0,1); 5Ba eHzI
} R+P1 +5
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/** Nl0*"}`I_
* @param data 6z~6o0s~
* @param j aK'BC>uFI
* @param i U1I2+;"#A
*/ B%[Yu3gBo
private void insertSort(int[] data, int start, int inc) { o4U9jU4<"
int temp; +dlN^P647
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8^kw
} @?TOg{:
} ?8pR RzV$
} K;Fy&p^d
L )kwMk
} :GK]"sNC
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快速排序: l1nrJm8
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package org.rut.util.algorithm.support; 9[T}cN=|
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import org.rut.util.algorithm.SortUtil; Ean
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/** ',~,hJ0
* @author treeroot I~|.Re9a
* @since 2006-2-2 xzh`q
* @version 1.0 X$)<>e]!>
*/ bDK72cQ
public class QuickSort implements SortUtil.Sort{ Rjt]^gb!*
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/* (non-Javadoc) h<JV6h :8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C`Zz\DNG@
*/ &Yb!j
public void sort(int[] data) { O(#DaFJv
quickSort(data,0,data.length-1); icH\(
} CKCot
private void quickSort(int[] data,int i,int j){ 4"7/+6Z
int pivotIndex=(i+j)/2; w6aq/m"'
file://swap G?*)0`~W
SortUtil.swap(data,pivotIndex,j); lG6P+ Z/nf
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int k=partition(data,i-1,j,data[j]); t[ cHdI
SortUtil.swap(data,k,j); .]24V!J(1w
if((k-i)>1) quickSort(data,i,k-1); q-}qrg
if((j-k)>1) quickSort(data,k+1,j); 4J{6Wt";
$9bLD
>.
} c <Fr^8
/** /?VwoSgV^
* @param data g[4pG`z
* @param i _c,c;
* @param j ^zn&"@
* @return J#ujI e
*/ QY|Rz(;m
private int partition(int[] data, int l, int r,int pivot) { hT go
do{ ](-zt9,
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `)?N7g[\u
SortUtil.swap(data,l,r); 0o7*5| T4
} /fv;`?~d*
while(l SortUtil.swap(data,l,r); #TS:|=
return l; ,v ,#f
.
} @L0xU??"|
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} u0p[ltJ,
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改进后的快速排序: _Oc5g5_{
KDxqz$14-
package org.rut.util.algorithm.support; ?h\fwF3
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import org.rut.util.algorithm.SortUtil; xl>8B/Zmf#
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/** Y].,}}9k
* @author treeroot
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* @since 2006-2-2 , Ox$W
* @version 1.0 Q,v/]bXd
*/ eI%9.Cx#I
public class ImprovedQuickSort implements SortUtil.Sort { gxPu/VD4
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private static int MAX_STACK_SIZE=4096; /x q^]0xy
private static int THRESHOLD=10; \:y oS>G
/* (non-Javadoc) QNWGUg4*&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Q7Z$A1a
9
*/ C8Ja>o2'
public void sort(int[] data) { rel_Z..~
int[] stack=new int[MAX_STACK_SIZE]; Nux
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int top=-1; FJQ=611@
int pivot; Uhs/F:E[A
int pivotIndex,l,r; 4Dy|YH$>S
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stack[++top]=0; TAB'oLNp
stack[++top]=data.length-1; 1
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while(top>0){ 717S3knlv
int j=stack[top--]; O#MaZ.=
int i=stack[top--]; N1iP!m9Q
)5Wt(p:T6_
pivotIndex=(i+j)/2; &$yxAqdab
pivot=data[pivotIndex]; +9exap27
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SortUtil.swap(data,pivotIndex,j); {:]u 6l
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file://partition WA((>Daf]
l=i-1; z94#:jPmG
r=j; k:[T#/;
do{ V!\'7-[R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); InA=ty]"_U
SortUtil.swap(data,l,r); |W*#N8IP
} ?`T Q'#P`
while(l SortUtil.swap(data,l,r); L8,/
SortUtil.swap(data,l,j); 0@yw#.j
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if((l-i)>THRESHOLD){ >npTUOGL=n
stack[++top]=i; .fAHP
5-
stack[++top]=l-1; X4eoE
} nD.K*# u
if((j-l)>THRESHOLD){ CT?4A1[aD
stack[++top]=l+1; 8'qq!WR~
stack[++top]=j; /Bq4! n+
} w"{mDL}c
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} S-5O$EnD
file://new InsertSort().sort(data); (T!#7
insertSort(data); nT
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} W#&BU-|2
/** X'{o/U.
* @param data sm Kp3_r
*/ TXT!Ae
private void insertSort(int[] data) { dWTc3@xd
int temp; xc}kDpF=g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f|6 Y
} J\Db8O-/x4
} ^P|Zze
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} }_=h]|6t
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} oP~%7Jt
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归并排序: $MqEM~^=
!K6:5V%q$
package org.rut.util.algorithm.support; ";jKTk7
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import org.rut.util.algorithm.SortUtil; &o]fBdn
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/** vRb7=fXf
* @author treeroot lWDSF]ZYV
* @since 2006-2-2 }Te+Rv7{E
* @version 1.0 'w0?-
*/ ASB3|uy _
public class MergeSort implements SortUtil.Sort{ lS|F&I5j
{A~3/M%74;
/* (non-Javadoc) (%'`t(<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P~84#5R1
*/ z))rk vL%
public void sort(int[] data) { N)/7j7c~;
int[] temp=new int[data.length]; tzY?LX[3
mergeSort(data,temp,0,data.length-1); @1~cPt
} XVF!l>nE
5Y 7 %Z
private void mergeSort(int[] data,int[] temp,int l,int r){ H2'djZ
int mid=(l+r)/2; $F1Am%
if(l==r) return ; +7{8T{
mergeSort(data,temp,l,mid); oT|:gih5
mergeSort(data,temp,mid+1,r); @~&|BvK% \
for(int i=l;i<=r;i++){ 1:RK~_E
temp=data; tr58J%Mu
} m=TZfa^r
int i1=l; F$ckW'V
int i2=mid+1; >,.\`.0
for(int cur=l;cur<=r;cur++){ '|}H,I{
if(i1==mid+1) 5&.I9}[)j
data[cur]=temp[i2++]; I+QM":2
else if(i2>r) #r,!-;^'p
data[cur]=temp[i1++]; cd`P'GDF
else if(temp[i1] data[cur]=temp[i1++]; g 'Wr+(A_
else c_t7<
data[cur]=temp[i2++]; MO?
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} )Fw#]~Z
} y Ni3@f
hY/qMK5
} Kpkpr`:)]
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改进后的归并排序: {N
<< JX
^9]g5.z:
package org.rut.util.algorithm.support; TEla?N
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import org.rut.util.algorithm.SortUtil; Uu|2!}^T
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/** VR'zm\< D
* @author treeroot >%5GMx>m
* @since 2006-2-2 lk[u
* @version 1.0 WpOH1[8v
*/ g][n1$%
public class ImprovedMergeSort implements SortUtil.Sort { qC-4X"y+
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private static final int THRESHOLD = 10; 4&%E?_M
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/* W.59Al'
* (non-Javadoc) 8g=];@z
* cG (%P$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zcuz @
*/ N'PK4:
public void sort(int[] data) { ~Lq`a@]A
int[] temp=new int[data.length]; YV'B*arIA
mergeSort(data,temp,0,data.length-1); Esm=sPW
} %0({MU
P
F);KQ
private void mergeSort(int[] data, int[] temp, int l, int r) { $h}w:AV:
int i, j, k; gB>AYL%o=
int mid = (l + r) / 2; iVo-z#
if (l == r) eep/96G
?
return; %TO&
if ((mid - l) >= THRESHOLD) D~TlG@Pq
mergeSort(data, temp, l, mid); v?}rA %so
else ;&!QN#_
insertSort(data, l, mid - l + 1); 0b<Qs88yd>
if ((r - mid) > THRESHOLD) ~+,ZD)AKi4
mergeSort(data, temp, mid + 1, r); jAovzZ6BL
else %zR5q Lb
insertSort(data, mid + 1, r - mid); [;l;kom
E>:#{%
for (i = l; i <= mid; i++) { 'e6J&X
temp = data; WEoD?GLS8
} VA`VDUG,
for (j = 1; j <= r - mid; j++) { PP/#Z~.M
temp[r - j + 1] = data[j + mid]; b&]z^_m)
} GnCs_[*&r
int a = temp[l]; *^XMf
int b = temp[r]; e.Jaq^Gw|
for (i = l, j = r, k = l; k <= r; k++) { 1/syzHjbY
if (a < b) { wa!z:}]
data[k] = temp[i++]; 9Z"WV5o
a = temp; Ft}nG&D
} else { ,zdK%V}
data[k] = temp[j--]; oTr,zRL
b = temp[j]; e.Q'l/g
} ;iQw2XhT
} y-S23B(
} \?|^w.
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/** @i#=1)Ze
* @param data |+Z-'k~Q
* @param l Ir(U7D
* @param i R8YU#D (Q
*/ AG#Mj(az!
private void insertSort(int[] data, int start, int len) { 1;!dTh
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Pa=xc>m^
} L>lxkq8!Q
} [h>A<O
} fJ=(oF=
} y 5?kv-"c
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堆排序: X_)I"`
) r"7" i
package org.rut.util.algorithm.support; W}|k!_/
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import org.rut.util.algorithm.SortUtil; :*R+ee,&-
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/** o#D'"Tn!
* @author treeroot xCyD0^KY
* @since 2006-2-2 PG@C5Rnu
* @version 1.0 ZTj!ti;5
*/ Ef3="}AI;
public class HeapSort implements SortUtil.Sort{ e@5w?QzW
O7od2fV(i7
/* (non-Javadoc) #iRd2Qj%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p _2Y c]8
*/ %`s1
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public void sort(int[] data) { b/tcD r
MaxHeap h=new MaxHeap(); Zrew}0
h.init(data); cV7a, *
for(int i=0;i h.remove(); tVNFulcz$
System.arraycopy(h.queue,1,data,0,data.length); ^* CKx
} p
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private static class MaxHeap{ .3SP#mI
!
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void init(int[] data){ -I z,vd
this.queue=new int[data.length+1]; TxKNDu
for(int i=0;i queue[++size]=data; *ozXilO
fixUp(size); bn=7$Ax
} f:AfM f>m
} X|4Kdi.r@
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private int size=0; ]<9o>#3
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private int[] queue; J:I As:e`
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public int get() { [Kb)Q{=)
return queue[1]; %/}d'WJR
} q6o}2<T@
m6@;!*Y
public void remove() { \ >#y*W<
SortUtil.swap(queue,1,size--); Z4{N|h?
fixDown(1); T:!H^
} sdKm@p|/|
file://fixdown [vnxp/v/<
private void fixDown(int k) { |-%dN }O
int j; yb\!4ml
while ((j = k << 1) <= size) { ^a|
if (j < size %26amp;%26amp; queue[j] j++; 0&3zBL%Bo
if (queue[k]>queue[j]) file://不用交换 R[#B|$
break; R$">
SortUtil.swap(queue,j,k); KB{/L5
k = j; A>)W6|m|
} oJc7az
} rT;_"y}
private void fixUp(int k) { ,0i72J
while (k > 1) { MB6lKLy6~
int j = k >> 1; nFefDdP
if (queue[j]>queue[k]) @-ir
break; Q.V+s
SortUtil.swap(queue,j,k); yATXN>]l
k = j; {axRq'=
} n0uL^{B
} VT;cz6"6b4
_z#S8Y
} mhNgXp)_56
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} Nig)!4CG
<[17&F0
SortUtil: !3"Hn
dAaxbP|
package org.rut.util.algorithm; uK[gI6M
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import org.rut.util.algorithm.support.BubbleSort; g{hbq[>X]
import org.rut.util.algorithm.support.HeapSort; D&6.> wt
.
import org.rut.util.algorithm.support.ImprovedMergeSort; 9 vNz
yh\
import org.rut.util.algorithm.support.ImprovedQuickSort; HzZX=c
import org.rut.util.algorithm.support.InsertSort; WVx^}_FD0
import org.rut.util.algorithm.support.MergeSort; `Tr !Gj_
import org.rut.util.algorithm.support.QuickSort; %.:]4jhk
import org.rut.util.algorithm.support.SelectionSort; iP?lP= M
import org.rut.util.algorithm.support.ShellSort; 7V"Jfh4_
H$,wg!kY!
/** ^>s{o5H&
* @author treeroot hgdr\
F
* @since 2006-2-2 ?~; q r
* @version 1.0 LEAU3doK;
*/ LOk J
public class SortUtil { 1R#1Fy%
public final static int INSERT = 1; `CG% Y>+
public final static int BUBBLE = 2; prGp/"E
public final static int SELECTION = 3; zKf0 :X
public final static int SHELL = 4; zH
*7!)8
public final static int QUICK = 5; *{=q:E$
public final static int IMPROVED_QUICK = 6; Emv9l~mIu
public final static int MERGE = 7; 6h&i<->
public final static int IMPROVED_MERGE = 8; ~tB9kLFG
public final static int HEAP = 9; %kk~qvW
sb%l N
public static void sort(int[] data) { $-n_$jLY
sort(data, IMPROVED_QUICK); jZ?^ |1
} UFj/Y;
private static String[] name={ $o*p#LU
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jG,^~5x
}; _9z+xl
Fz]!2rt
private static Sort[] impl=new Sort[]{ M:%Ll3
new InsertSort(), B,A\/%<
new BubbleSort(), '~pZj"uy
new SelectionSort(), ^!K 8nW{*
new ShellSort(), E{'\(6z_
new QuickSort(), -M-y*P)
new ImprovedQuickSort(), f/i[?
gw
new MergeSort(), \>e>J\t:
new ImprovedMergeSort(), deutY.7g
new HeapSort() n:JG+1I
}; i]0$7s9!
LhKUZX,P8
public static String toString(int algorithm){ B_0]$D0
^
return name[algorithm-1]; eie u|_
} 3\5I4#S
}ct*<zj[~u
public static void sort(int[] data, int algorithm) { p5bM/{DP;K
impl[algorithm-1].sort(data); 1<wolTf
} L$; gf_L
d)v!U+-|'
public static interface Sort { vtTXs]>
public void sort(int[] data); D 6F/9|
} ,>I_2mc
a0cW=0l=
public static void swap(int[] data, int i, int j) { iBqIV
int temp = data; 7 '7a`-W
data = data[j]; RH;Kbu
data[j] = temp; Cta!"=\
} =5M
'+>
} 1i$OcN?x%