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。 BpX` 49
插入排序: Tow! 5VAM
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package org.rut.util.algorithm.support; B%kC>J
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import org.rut.util.algorithm.SortUtil; 02NVdpo[wU
/** 4sBvW
* @author treeroot E $W0HZ'
* @since 2006-2-2 .)p%|A#^
* @version 1.0 K)+]as
*/ ~t$ng l$
public class InsertSort implements SortUtil.Sort{ ;4GGXT++L
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/* (non-Javadoc) 19pFNg'kA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $;~YgOVZ5
*/ h;y}g/HZ
public void sort(int[] data) { Qe4 % A
int temp; X%N!gy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PBFpV8P,
} &5z9C=]e
} 6X?:mn'%QF
} ![fNlG!r
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} {cO8q
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冒泡排序: @3=q9ftm
yJ ljCu)f
package org.rut.util.algorithm.support; Iu5 9W>
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import org.rut.util.algorithm.SortUtil; "9"
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/** "M\rO!f:
* @author treeroot g>w {{G
* @since 2006-2-2 ".N{v1
* @version 1.0 )UTjP/\gN
*/ Ht/#d6cQ
public class BubbleSort implements SortUtil.Sort{ aSxDfYN=R
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/* (non-Javadoc) 3hje
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?,+&NX3m
*/ \&ZEIAe
public void sort(int[] data) { ka ;=%*7T
int temp; !>=lah$&
for(int i=0;i for(int j=data.length-1;j>i;j--){ U /~uu
if(data[j] SortUtil.swap(data,j,j-1); q8;MPXSG3
} ^q0`eS
} 4sRg+mMI
} F7nwVDc*
} }A;YM1^$
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} 4<)*a]\c5M
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选择排序: `-R&4%t%
v}D0t]
package org.rut.util.algorithm.support; .X"&kO>G
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import org.rut.util.algorithm.SortUtil; b!Nr
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/** i_*.
* @author treeroot ?D_iib7
* @since 2006-2-2 o:"(\$
* @version 1.0 1[#sHj$Na`
*/ J=(i0A
public class SelectionSort implements SortUtil.Sort { Bg zq
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/* DHuvHK0#
* (non-Javadoc) 5} ur,0{
* Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 05\0g9
*/ 3 |LRb/|
public void sort(int[] data) { :D;pD l
int temp; q
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for (int i = 0; i < data.length; i++) { rnp; R
int lowIndex = i; /0Qo(
for (int j = data.length - 1; j > i; j--) { f#m@eb
if (data[j] < data[lowIndex]) { 4,h)<(d{
lowIndex = j; 8;c\}D
} PApr8Xe
} XqhrQU|wM
SortUtil.swap(data,i,lowIndex); r!eW]M
} RW1+y/#%P
} v6Y[_1
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} Z(tO]tQE
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Shell排序: ,/TmTX--d
NZADHO@0
package org.rut.util.algorithm.support; .f. tPm
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import org.rut.util.algorithm.SortUtil; *8;<w~
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/** gzH;`,
* @author treeroot *n#
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* @since 2006-2-2 @JLN3
* @version 1.0 Qb%;
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*/ hNkv lk'Ui
public class ShellSort implements SortUtil.Sort{ Vm8dX?
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/* (non-Javadoc) .
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3
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*/ H.C*IL9
public void sort(int[] data) { +Zr~mwM=x
for(int i=data.length/2;i>2;i/=2){ gW4fwE^
for(int j=0;j insertSort(data,j,i); nhC8Tq[m
}
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} =3SJl1w1
insertSort(data,0,1); |;t{L^
} PNo:vRtsq
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/** !O}e)t
* @param data 9%3+\[s1
* @param j Ie=gI+2
* @param i K"5q387!
*/ c+T`X?.j
private void insertSort(int[] data, int start, int inc) { YRf$?xa
int temp; vdB2T2F
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i^Jw`eAmT
} F^%\AA]8
} Fv$w:r]q6
} m$(OQ,E
Mw-L?j0o[k
} @2d9
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快速排序: DTo"{!
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package org.rut.util.algorithm.support; :V#xrH8R
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import org.rut.util.algorithm.SortUtil; iyr8*L\
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/** uR.pQo07y<
* @author treeroot V lO^0r^z
* @since 2006-2-2 }U5$~,*p
* @version 1.0 QHUFS{G]
*/ 3&{6+ A
public class QuickSort implements SortUtil.Sort{ 'W54 T
F s=x+8'M
/* (non-Javadoc) vkR~nIp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Y7$cU &
*/ y!R9)=/M
public void sort(int[] data) { qxHn+O!h
quickSort(data,0,data.length-1); fl9VokAT
} _?'W30Dg
private void quickSort(int[] data,int i,int j){ ;pOV; q3j
int pivotIndex=(i+j)/2; "*l{ m2"
file://swap Bj><0
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SortUtil.swap(data,pivotIndex,j); 0raFb,6l
BI*0JKQu
int k=partition(data,i-1,j,data[j]); I!u=.[5zdC
SortUtil.swap(data,k,j);
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if((k-i)>1) quickSort(data,i,k-1); OkISRj'!U
if((j-k)>1) quickSort(data,k+1,j); IuAu_`,Ndi
\pTC[Ry1
} O:T
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/** |*h{GX.(
* @param data ya^8mp-
* @param i C\Yf]J
* @param j >t'A1`W
* @return O&;d8 2IA{
*/ yENAc sv
private int partition(int[] data, int l, int r,int pivot) { T;{:a-8
do{ T@#?{eA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8*{jxN'M
SortUtil.swap(data,l,r); :)B1|1
} N`fFYO
while(l SortUtil.swap(data,l,r); 0L#i c61U
return l; QLHEzEvf{/
} <n~.X<6V'
=-GxJPL
} ~Jsu"kr
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改进后的快速排序: 6|3 X*Orn
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package org.rut.util.algorithm.support; y x#ub-A8
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import org.rut.util.algorithm.SortUtil; $""kZ
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/** <Uf`'X\e6
* @author treeroot Cd]A1<6s
* @since 2006-2-2 a&)!zhVP
* @version 1.0 gE=9K @
*/ KQ81Oxu*C
public class ImprovedQuickSort implements SortUtil.Sort { tf8xc
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private static int MAX_STACK_SIZE=4096; H`URJ8k$Q
private static int THRESHOLD=10; 4/mz>eK"
/* (non-Javadoc) }-XZ1qr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cwtlOg
*/ ~[og\QZX
public void sort(int[] data) { Vmh$c*TE
int[] stack=new int[MAX_STACK_SIZE]; CRNi*u
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int top=-1; -J#RGB{7
int pivot; Y TY(Et1i
int pivotIndex,l,r; jA^Dk$
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stack[++top]=0; ;C:|m7|
stack[++top]=data.length-1; 59W~bWHCP
Wc!]X.|9*
while(top>0){ HyKA+7}
int j=stack[top--]; 1n7'\esC*
int i=stack[top--]; 9Hb|$/FD
{.KD#W
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pivotIndex=(i+j)/2; p>3QW3<
pivot=data[pivotIndex]; a;-%C{S9r
cTRtMk%^
SortUtil.swap(data,pivotIndex,j); QUvSeNSp
%N(>B_t\
file://partition c$BH`" <*
l=i-1; HJym|G>%?
r=j; Pi9?l>
do{ XD0a :T)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); P6ktA-Hv>
SortUtil.swap(data,l,r); LayK&RwL
} }YM\IPsPu
while(l SortUtil.swap(data,l,r); e<a*@
P,
SortUtil.swap(data,l,j); :&:P4Y1
E
d]^m^
if((l-i)>THRESHOLD){ _~C1M&b(X3
stack[++top]=i; $o\z4_I
stack[++top]=l-1; y&O?`"Uv/M
} AL,7rYZG$
if((j-l)>THRESHOLD){ IEP|j;~*
stack[++top]=l+1; d8+@K&z|
stack[++top]=j; dKU:\y
} .8%b;b
"X;5*
4+
} [uHC
AP
file://new InsertSort().sort(data); oz,.gP%
insertSort(data); Buh}+n2]5
} `^'fS@VA
/** UQ7]hX9
* @param data In1n.oRFn^
*/ )s,tBU+N
private void insertSort(int[] data) { 4e AMb
int temp; >b=."i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j&Xx{ 4v
} h*!oHS~/l
} 33D2^Sf6"
} F.1u9)
74:~F)BP
} r%iFsV_
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归并排序: mf{M-(6'
P6La)U`VA
package org.rut.util.algorithm.support; xfI0P0+
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import org.rut.util.algorithm.SortUtil; ,c?(
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/** ^E8qI8s
* @author treeroot tK/,U
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* @since 2006-2-2 /je
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* @version 1.0 Rf>)#hn%
*/ 5G(dvM-n
public class MergeSort implements SortUtil.Sort{ oD\t4]?E
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/* (non-Javadoc) {7]maOg>7J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *)
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*/ v@q&B|0
public void sort(int[] data) { .|hsn6i/-
int[] temp=new int[data.length]; i$6rnS&C
mergeSort(data,temp,0,data.length-1); \O;/wf0Hg
} :#?_4D!r
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private void mergeSort(int[] data,int[] temp,int l,int r){ _#&oQFdYR
int mid=(l+r)/2; c(2?./\|
if(l==r) return ; b)e;Q5Z(.
mergeSort(data,temp,l,mid); _kMHF
mergeSort(data,temp,mid+1,r); YVgH[-`,
for(int i=l;i<=r;i++){ ry=8Oq&[~
temp=data; L*,h=#x(
} S1Od&v[R
int i1=l; /^k%sG@?
int i2=mid+1; A/UO cl+N
for(int cur=l;cur<=r;cur++){ V]+y*b.60
if(i1==mid+1) Y~{<Hs
data[cur]=temp[i2++]; %g@\SR.
else if(i2>r)
+PADy8
data[cur]=temp[i1++]; %Y=r5'6l
else if(temp[i1] data[cur]=temp[i1++]; \ ~+b&
else 8OV=;aM?{
data[cur]=temp[i2++]; G6W|l2P!
} 0,0Z!-Y
} 'Q :%s
A[7H-1-
} -C~zvP;a
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改进后的归并排序: 2YY4 XHQS
qpCaW0]7
package org.rut.util.algorithm.support; EsX(<bx
32SkxcfrCK
import org.rut.util.algorithm.SortUtil; =p=/@ FN
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/** z\ONwMl
* @author treeroot |nnFjGC`~
* @since 2006-2-2 VV}"zc^
* @version 1.0 'Rsr*gX#
*/ _D?/$D7u#%
public class ImprovedMergeSort implements SortUtil.Sort { X`WS&!C<
Jj=N+,km
private static final int THRESHOLD = 10; U/s
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j$/#2%OVN
/* $t}W,?
* (non-Javadoc) b1i~F45h
* <8kCmuGlk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LAlX|b
*/ u pUJF`3
public void sort(int[] data) { 26k~Z}
int[] temp=new int[data.length]; O#18a,o@
mergeSort(data,temp,0,data.length-1); &g23tT#P?
} Fv
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G/},lUzLg
private void mergeSort(int[] data, int[] temp, int l, int r) { O-W[^r2e
int i, j, k; 0)b1'xt',
int mid = (l + r) / 2; "9aFA(H6w
if (l == r) F*Hovxez
return; Vjt7X"_/
if ((mid - l) >= THRESHOLD) H!X*29nX
mergeSort(data, temp, l, mid); W5Pur
lu?
else &-Wt!X 3
insertSort(data, l, mid - l + 1); 8N9,HNBT$
if ((r - mid) > THRESHOLD) mk!8>XvM
mergeSort(data, temp, mid + 1, r); 0n`Temb/
else sH2xkUp
insertSort(data, mid + 1, r - mid); Hf_
pe
sn^ 3xAF
for (i = l; i <= mid; i++) { .|07IH/Di{
temp = data; VWK/(>TP
} CL7/J[TS
for (j = 1; j <= r - mid; j++) { ;y@zvec4
temp[r - j + 1] = data[j + mid]; Cu24xP`
} : fYfXm
int a = temp[l]; }wvR s5;o
int b = temp[r]; Gsy>"T{CY
for (i = l, j = r, k = l; k <= r; k++) { |IzL4>m:;
if (a < b) { L/WRVc6
data[k] = temp[i++]; iM:-750n/
a = temp; z(^dwMw}
} else { .6
0yQ[aE
data[k] = temp[j--]; NopfL
b = temp[j]; 0Qvr
g+
} $E^sA|KcT
} rDoMz3[w
} 1EQ:@1
Lk#)VGk:
/** PyHL`PZZ
* @param data V/"RCqY4
* @param l ;Wk3>\nT-
* @param i 6]<yR>
'
*/ +`Nu0y!rj
private void insertSort(int[] data, int start, int len) { <[}zw!z
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #<m2Xo?d]
} G"u4]!$/
} US9aW)8
} t!J>853
} I/A%3i=H
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堆排序: !- QB>`7$
U*sQ5uq
package org.rut.util.algorithm.support; S\t!7Xs%*U
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import org.rut.util.algorithm.SortUtil; m
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/** !XI9evJw
* @author treeroot GtIAsC03
* @since 2006-2-2 )y:))\>
* @version 1.0 RN@)nc_
*/ bZfq?
public class HeapSort implements SortUtil.Sort{ M3]eqxLC
bVN?7D(
/* (non-Javadoc) _]Ob)RUVH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qyKR]%yzi
*/ =+DhLH}8
public void sort(int[] data) { P2s\f;Dwr
MaxHeap h=new MaxHeap(); eUCBQK
h.init(data); 7iM@BeIf
for(int i=0;i h.remove(); BLqK5~
System.arraycopy(h.queue,1,data,0,data.length); <^KW7M}w*c
} @RuMo"js
AOcUr)
private static class MaxHeap{ P()W\+",n
I D-I<Ev
void init(int[] data){ DQV9=
this.queue=new int[data.length+1]; &1yErGXC
for(int i=0;i queue[++size]=data; E
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fixUp(size); -p7
HQ/
} 3&M0@/
} oPbziB8
|)%H_TXTy
private int size=0; 46 \!W(O~y
'4~I%Z7L
private int[] queue; a"g\f{v0AR
zn^ G V
public int get() { Rh
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return queue[1]; Qu8=zI>t
} ZDI?"dt{
){,Mv:#+T
public void remove() { w}$;2g0=a<
SortUtil.swap(queue,1,size--); >zfx2wh\a
fixDown(1); ;KmrBNF
} (0_zp`)
file://fixdown IIBS:&;+-
private void fixDown(int k) { x*TJYST
int j; k_?OEkgUh
while ((j = k << 1) <= size) { | lzcyz
if (j < size %26amp;%26amp; queue[j] j++; a[}?!G-Wt|
if (queue[k]>queue[j]) file://不用交换 4JO16
break; eBmHb\
SortUtil.swap(queue,j,k); RK$(
k = j; pTTM(Hrx
} c3PA<q[
} <)sL8G9Y
private void fixUp(int k) { LZs'hA<L
while (k > 1) { oGg<s3;UND
int j = k >> 1; ]EDCs?,
if (queue[j]>queue[k]) L
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break; mC0Dj O
SortUtil.swap(queue,j,k); i=P}i8,^=
k = j; THK^u+~LM
} u:l<NWF^
} RwrRN+&s\
z?|bs?HKS
} _;S~nn
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} #RSUChe7w
DZH2U+K
SortUtil: Hm|N{
{KEmGHC4R
package org.rut.util.algorithm; {'{9B
ICe;p
V
import org.rut.util.algorithm.support.BubbleSort;
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import org.rut.util.algorithm.support.HeapSort; psz0q|
import org.rut.util.algorithm.support.ImprovedMergeSort; }mUb1b
import org.rut.util.algorithm.support.ImprovedQuickSort; h>!9N
dzG
import org.rut.util.algorithm.support.InsertSort; UYW'pV
import org.rut.util.algorithm.support.MergeSort; `Nz`5}8.?
import org.rut.util.algorithm.support.QuickSort; .XkVdaX
import org.rut.util.algorithm.support.SelectionSort; 4mX?PKvbn
import org.rut.util.algorithm.support.ShellSort; I};*O6D`
QJjk#*?,|
/** TK~KM
* @author treeroot @" umY-1f
* @since 2006-2-2 ,69547#o
* @version 1.0 Q+QD,
*/ -m
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public class SortUtil { 08%Bx~88_%
public final static int INSERT = 1; K,U8 vc
public final static int BUBBLE = 2; 37jrWe6xwp
public final static int SELECTION = 3; })J}7@VPO
public final static int SHELL = 4; # Oq.}x?i
public final static int QUICK = 5; JZ:yPvJ
public final static int IMPROVED_QUICK = 6; GWWaH+F[h
public final static int MERGE = 7; H(M{hfa|
public final static int IMPROVED_MERGE = 8; *_}0vd
public final static int HEAP = 9; d 79 2#Dc
88?O4)c
public static void sort(int[] data) { %@TC-
xx
sort(data, IMPROVED_QUICK); ]0|A\bE\S
} %p&y/^=0I
private static String[] name={ \.Op6ECV9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N&Ho$,2s
}; ?gjx7TQ?
tp&|*M3
private static Sort[] impl=new Sort[]{ 9zIqSjos"
new InsertSort(), YB2gxZ
new BubbleSort(), O(D2F$VlL
new SelectionSort(), E7aG&K
new ShellSort(), \[*q~95$v
new QuickSort(), /5j5\F:33
new ImprovedQuickSort(), _z 5W*..
new MergeSort(), ?~yJ7~3TS<
new ImprovedMergeSort(), 1Ax;|.KQH
new HeapSort() #V#!@@c;?
}; DGS,iRLnA
.sFN[>)
public static String toString(int algorithm){ LGX+_"
return name[algorithm-1]; K(d+t\ca
} *vvm8ik
F*>#Xr~/
public static void sort(int[] data, int algorithm) { =_ b/g
impl[algorithm-1].sort(data); {s*2d P)
} #Q*V9kvU/H
b`^Q ':^A
public static interface Sort { Y~UAE.
public void sort(int[] data); ;YW@ 3F-h
} HiH<'m"\.
NuD|%Ebs
public static void swap(int[] data, int i, int j) { EUQtl_h/H
int temp = data; [K'gvLt1
data = data[j]; k6RVP:V
data[j] = temp;
P +OS
} G43r85LO
} {P_7AM