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。 xYt{=
插入排序: "Jnq~7]
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package org.rut.util.algorithm.support; %v~j10e
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import org.rut.util.algorithm.SortUtil; J(/
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/** ",8h>eEWK
* @author treeroot +S%@/q
* @since 2006-2-2 ^#^u90I
* @version 1.0 l/rhA6kEU
*/ cB<0~&
public class InsertSort implements SortUtil.Sort{ N}FG%a
1<59)RiO>
/* (non-Javadoc) Cv$TNkP*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N{p2@_fnB
*/ @1Zf&'/6
public void sort(int[] data) { [V jd)%
int temp; l]v
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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); 2,QkktJLo
} `8'T*KU
} (uV7N7 <1
} R?&S]?H
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} Vj?.' (
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冒泡排序: U5H o? `<
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package org.rut.util.algorithm.support; ~C!vfPC
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import org.rut.util.algorithm.SortUtil; HZK0Ldf
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/** caj)
* @author treeroot hU=J^Gi0
* @since 2006-2-2 iPFYG
* @version 1.0 )E[5lD61
*/ 9C4l@jrF
public class BubbleSort implements SortUtil.Sort{ dl":?D4H
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/* (non-Javadoc) xwRnrWd^6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k Lv_P[I
*/ rf`Br\g8
public void sort(int[] data) { .i=%gg
int temp; ASYUKh,h
for(int i=0;i for(int j=data.length-1;j>i;j--){ AV2q*
if(data[j] SortUtil.swap(data,j,j-1); a<Ns C1
} -91l"sI
} ?xf;#J+{8
} (%P* rl
} q?^0
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} !}3`Pl.(r
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选择排序: E%;'3Qykva
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package org.rut.util.algorithm.support; hx2C<;s4
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import org.rut.util.algorithm.SortUtil; V!opnLatYS
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/** ZK
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* @author treeroot ~NcJLU!au
* @since 2006-2-2 oOL3O@)w>
* @version 1.0 XeB>V.<y
*/ sTA/2d
public class SelectionSort implements SortUtil.Sort { xXx`a\i
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/* :U:7iP:
* (non-Javadoc) ( Lu.^
* x@Y2jM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &53#`WgJ
*/ d=#p w*w
public void sort(int[] data) { ^kl9U+
int temp; J@GfO\
o
for (int i = 0; i < data.length; i++) { R_qo]WvR;
int lowIndex = i; `Of wl%G
for (int j = data.length - 1; j > i; j--) { x7@WWFF>
if (data[j] < data[lowIndex]) { ];I| _fXo%
lowIndex = j; 6|KX8\,A@
} !1RV[b.8
} 46zaxcY<!
SortUtil.swap(data,i,lowIndex); ]v{fFmL
} w}.'Tebu
} +r0eTP=zf
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} /,Rca1W
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Shell排序: H< ;Fb;b
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package org.rut.util.algorithm.support; >jX
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import org.rut.util.algorithm.SortUtil; x
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/** U R@BSK'
* @author treeroot \ZFQ?e,d
* @since 2006-2-2 &'7"i~pC
* @version 1.0 l;BX\S
*/ uit-Q5@~
public class ShellSort implements SortUtil.Sort{ j#e.rNG
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/* (non-Javadoc) Ys$YI{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zcB2[eaV
*/ olMO+-USP
public void sort(int[] data) { #Q3PzDfj
for(int i=data.length/2;i>2;i/=2){ +^kxFQ(:
for(int j=0;j insertSort(data,j,i); =$8@JF'
} + |qfgi
} u`pROd/ R5
insertSort(data,0,1); zw:C*sY
} b#g
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*kQCW#y0
/** ZCBPO~&hO'
* @param data ~u0xXfv#
* @param j *e<Eu>fW#&
* @param i g?~ Tguv
*/ 5)yOw|Bd
private void insertSort(int[] data, int start, int inc) { P;[Y42\z|
int temp; ]&:b<]K3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3l%,D:
?
} `<J#l;y
} GzFE%< 9F
} _;:rkC fj
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} 0HR|aqPo
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快速排序: L"foL
Px?Ao0)Z,
package org.rut.util.algorithm.support; <'[Ku;m
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import org.rut.util.algorithm.SortUtil; voV:H[RD9
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/** \E@s_fQ]
* @author treeroot T|@#w%c''
* @since 2006-2-2 (a
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* @version 1.0 9k:W1wgH1
*/ @8nLQh^
public class QuickSort implements SortUtil.Sort{ ^Cg^`n?@b
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/* (non-Javadoc) sS2_-X[_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~o@\
n
*/ |mxNUo-
public void sort(int[] data) { uxOJ3
quickSort(data,0,data.length-1); w<65S
} {/d4PI7)tK
private void quickSort(int[] data,int i,int j){ wmo{YS3t|
int pivotIndex=(i+j)/2; d(fPECv(
file://swap q_T]9d
SortUtil.swap(data,pivotIndex,j); lwOf)jK:J
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int k=partition(data,i-1,j,data[j]); Xsd$*F@<
SortUtil.swap(data,k,j); EZ"bW
if((k-i)>1) quickSort(data,i,k-1); {l2N&
if((j-k)>1) quickSort(data,k+1,j); g5#CN:%f
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} p jKt:R}
/** X9fNGM1
* @param data 4:vTxNs&S
* @param i q2e]3{l3
* @param j HU &)
* @return 3;*z3;#}
*/ i&`!|X-=R
private int partition(int[] data, int l, int r,int pivot) { <EMkD1e
do{ XRa(sXA3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y@Y`gF6F
SortUtil.swap(data,l,r); }[ ].\G\G
} lv4(4$T
while(l SortUtil.swap(data,l,r); :peqr!I+K
return l; ./l|8o
} Xv0F:1
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} JO2xT#V
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改进后的快速排序: 0p-#f|ET
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package org.rut.util.algorithm.support; 0[/vQ+O ]2
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import org.rut.util.algorithm.SortUtil; nbGoJC:U
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/** Ah-8"`E
* @author treeroot `<^*jB@P
* @since 2006-2-2 ibJl;sJ
* @version 1.0 ^'vIOq-1v
*/ b^ sb]bZW
public class ImprovedQuickSort implements SortUtil.Sort { [Tb\woU
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private static int MAX_STACK_SIZE=4096; 'M8aW!~
private static int THRESHOLD=10; HT"gT2U+
/* (non-Javadoc) (SF1y/g@=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H`-=?t
*/ xuUx4,Z
public void sort(int[] data) { IaLMWoh
int[] stack=new int[MAX_STACK_SIZE]; Seda }
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int top=-1; 3B{[%#vO
int pivot; !\;:36B#6
int pivotIndex,l,r; ,=|4:F9
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stack[++top]=0; H4:ZTl_$
stack[++top]=data.length-1; o.Oq__ >$H
E-fr}R}
while(top>0){ +TN^NE
int j=stack[top--]; >)Gd:636+
int i=stack[top--]; \"x>JW4w
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pivotIndex=(i+j)/2; )eYDQA>J
pivot=data[pivotIndex]; }>}1oUCi
"MnSJ2
SortUtil.swap(data,pivotIndex,j); 3qi_]*dD
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file://partition ]^K;goQv
l=i-1; uZIJoT
r=j; 3b!,D
do{ | o0RP|l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5HKW"=5Cf
SortUtil.swap(data,l,r); l -.(Ez*
} eLfvMPVo
while(l SortUtil.swap(data,l,r); e1/sqXWo
SortUtil.swap(data,l,j); >72JV;W]
pSfYu=#f
if((l-i)>THRESHOLD){ xAhxD|4_
stack[++top]=i; <7)Fh*W@
stack[++top]=l-1; NfzF.{nh
} dqc1q:k?$
if((j-l)>THRESHOLD){ -5bA
$
stack[++top]=l+1; mfom=-q3k
stack[++top]=j; )TJS4?
} vl:J40Kfn
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} &@v<nO-
file://new InsertSort().sort(data); PJLR<9
insertSort(data); 9V
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} |L::bx(
/** qp p/8M
* @param data cpZc9;@IC
*/ d]wD[]
private void insertSort(int[] data) { "y;bsZBd"
int temp; sL^yB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z[nS$]u
} ^,8R,S\}$
} ,EpH4*e
} T~xwo
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} <l,o&p,>|c
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归并排序: `BY&>WY[
K'5'}Lb5k
package org.rut.util.algorithm.support; $m| V :/
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import org.rut.util.algorithm.SortUtil; y$W|~ H
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/** ,0N94pKy
* @author treeroot {b)~V3rsY
* @since 2006-2-2 1wj:aD?g
* @version 1.0 cre;P5^E
*/ oqd;6[%G
public class MergeSort implements SortUtil.Sort{ &[Xu!LP
r=uN9ro
/* (non-Javadoc) }yn0IWVa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?%tMohL
*/ eV^d6T$
public void sort(int[] data) {
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int[] temp=new int[data.length]; uN*KHE+h
mergeSort(data,temp,0,data.length-1); sic"pn],U
} gV;H6"
4*n#yVb/
private void mergeSort(int[] data,int[] temp,int l,int r){ /6uT6G+(z}
int mid=(l+r)/2; 796\jf$
if(l==r) return ; I=)hWC/
mergeSort(data,temp,l,mid); g#]" hn
mergeSort(data,temp,mid+1,r); x&sI=5l
for(int i=l;i<=r;i++){ *D}0[|O
temp=data; `>Tu|3%\
} 4rT*tW"U
int i1=l; {PP9$>4`l
int i2=mid+1; >^Q&nkB"B
for(int cur=l;cur<=r;cur++){ d_UN0YT<
if(i1==mid+1) $
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data[cur]=temp[i2++]; (_kp{0r#
else if(i2>r) C&LBr|
data[cur]=temp[i1++]; GG064zPq7
else if(temp[i1] data[cur]=temp[i1++]; H={DB
else N[]Hc
data[cur]=temp[i2++]; ='ZRfb&
} zLs|tJOVp
} EC2+`HJ"
K5ZC:Ks
} ZX!r1*c
6
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改进后的归并排序: o+`6LKg;
00I}o%akO
package org.rut.util.algorithm.support; uzmk6G
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import org.rut.util.algorithm.SortUtil; WG*t::NN
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/** geQ{EwO8n
* @author treeroot CTt vyr
* @since 2006-2-2 X'. qYsS
* @version 1.0 t*z~5_/
*/ _{t9 x\=
public class ImprovedMergeSort implements SortUtil.Sort { H9h@ sSg
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private static final int THRESHOLD = 10; C{sLz9
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/* z,qRcO&
* (non-Javadoc) T2}FYVj?!g
* Zfk*HV#\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "|;:>{JC
*/ R>DaOH2K*
public void sort(int[] data) { rG#Z=*b%
int[] temp=new int[data.length]; Q-ni|
mergeSort(data,temp,0,data.length-1); L;gO;vO
} obdFS,JxxG
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t
private void mergeSort(int[] data, int[] temp, int l, int r) { M?= ;JJ:
int i, j, k; (D@A74q\'
int mid = (l + r) / 2; }2K $^uR
if (l == r) |
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return; b-3*Nl _%
if ((mid - l) >= THRESHOLD) K3\#E/Ox
mergeSort(data, temp, l, mid); z4&iK)x
else >^Se'SE]
insertSort(data, l, mid - l + 1); f;}EhG'
if ((r - mid) > THRESHOLD) aM7uBx\8 5
mergeSort(data, temp, mid + 1, r); G^q3Z#P
else nXjPx@
insertSort(data, mid + 1, r - mid); :4^\3~i1X
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for (i = l; i <= mid; i++) { G_> #Js
temp = data; 5 H#W[^s"
} 9-]i.y
for (j = 1; j <= r - mid; j++) { <hwy*uBrD
temp[r - j + 1] = data[j + mid]; ^$&k5e/}C
} 1?
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int a = temp[l]; VUI|.76g
int b = temp[r]; +7t6k7]c
for (i = l, j = r, k = l; k <= r; k++) { %,hV[[ @.
if (a < b) { R\XKMF3mN3
data[k] = temp[i++]; z,{<Nm7&F
a = temp; c1%H4j4/
} else { " R8KQj
data[k] = temp[j--]; w
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b = temp[j]; M-i_#EWP
} !"+'A)Nve
} bFA!=uvA
} \,J/ r!
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/** ~tOAT;g}q
* @param data iD= p\
* @param l >Z1q j>
* @param i &qS[%K )
*/ w`l{LHrR
private void insertSort(int[] data, int start, int len) { &K/FyY5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \^#~@9
} _0gKK2
} 8u!"#S#>a
}
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} iMfngIs |
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堆排序: kh%{C]".1
jYiv'6z
package org.rut.util.algorithm.support; Z'H5,)j0R
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import org.rut.util.algorithm.SortUtil; g#]wLm#
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/** waKT{5k
* @author treeroot w1UA?+43
* @since 2006-2-2 >AJSqgHQ,
* @version 1.0 S~]mWxgZ
*/ WW~+?g5
public class HeapSort implements SortUtil.Sort{ G|\^{5
OM{WI27
/* (non-Javadoc) #M A4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #[#KL/i)$
*/ wCk~CkC?
public void sort(int[] data) { P]z[v)}
MaxHeap h=new MaxHeap(); ]jpu,jz:
h.init(data); b~-%c_
for(int i=0;i h.remove(); #lU9yv
System.arraycopy(h.queue,1,data,0,data.length); }-~T<egF
} LL$_zK{
Ge d [#Q
private static class MaxHeap{ lD mtQk-SN
fu$R7
void init(int[] data){ fL]Pztsk+
this.queue=new int[data.length+1]; l|5fE1K9U
for(int i=0;i queue[++size]=data; ;\MW$/[JCy
fixUp(size); Hi]cxD*`
} mw5?[@G-
} CkswJ:z)sc
;l}- Z@! /
private int size=0; 1n\ t+F
BPr^D0P
private int[] queue; xJ2*LM-
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public int get() { I}2P>)K
return queue[1]; )!tK[K?5
} =vT<EW}[
fg#x7v4O
public void remove() { ly WwGR
SortUtil.swap(queue,1,size--); ~zHg[X*
fixDown(1); >c-fI$]
} E\; ikX&1
file://fixdown +/D>|loRC
private void fixDown(int k) { >3u]OSb
int j; Dz./w
while ((j = k << 1) <= size) { }h 3K@R
if (j < size %26amp;%26amp; queue[j] j++; .vG,fuf8
if (queue[k]>queue[j]) file://不用交换 7Ol}EPf#
break; H:H6b
SortUtil.swap(queue,j,k); OCy0#aPRS
k = j; BnRN;bu
} NzKUtwnIz
} Ej7 /X ~
private void fixUp(int k) { Blq8H"3!:
while (k > 1) { Vb
qto|X@
int j = k >> 1; h$N0D !
if (queue[j]>queue[k]) w-@6|o,S
break; sE{ pzPq!
SortUtil.swap(queue,j,k); kM`l
k = j; Z/rTVAs@r
} #yI.nzA*
} PR|R`.QSs
,#W
} 5<L_|d)0"
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} m5G \}8|
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SortUtil: $BmmNn#
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package org.rut.util.algorithm; &_5tqh
1c+]gIe
import org.rut.util.algorithm.support.BubbleSort; n41@iK2l
import org.rut.util.algorithm.support.HeapSort; wW?,;B'74
import org.rut.util.algorithm.support.ImprovedMergeSort; XBQ\_2>
import org.rut.util.algorithm.support.ImprovedQuickSort; #"fJa:IYG7
import org.rut.util.algorithm.support.InsertSort; ob_I]~^I?|
import org.rut.util.algorithm.support.MergeSort; /=uMk]h
import org.rut.util.algorithm.support.QuickSort; Vx_rc%'
import org.rut.util.algorithm.support.SelectionSort; f.GETw
import org.rut.util.algorithm.support.ShellSort; a{Esw`
;IK[Y{W/
/** Jx#k,Z4
* @author treeroot v+"rZ
* @since 2006-2-2 /J)l /oI
* @version 1.0 Jw~( G9G
*/ ``ekR6[ 8c
public class SortUtil { *Ywpz^2?:
public final static int INSERT = 1; T!W~n
ZC
public final static int BUBBLE = 2; sS
TPMh
public final static int SELECTION = 3; aAu>Tn86D.
public final static int SHELL = 4; -yDs<
Xl
public final static int QUICK = 5; 9x+<Ik
public final static int IMPROVED_QUICK = 6; ZDL']*)'
public final static int MERGE = 7; U}Hwto`R
public final static int IMPROVED_MERGE = 8; ~"Gf<3^y+
public final static int HEAP = 9; d7Ur$K\=y
1xf=_F0`&
public static void sort(int[] data) { ,%bhyww<
sort(data, IMPROVED_QUICK); U=sh[W
} i~J;G#b
private static String[] name={ ?t@v&s
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h;lirvO|
}; *b}>cn)<v
(yo;NKq,@
private static Sort[] impl=new Sort[]{ <ktzT&A
new InsertSort(), )x#5Il
H
new BubbleSort(), ]<DNo&fw
new SelectionSort(), 9]$8MY
new ShellSort(), ,D6v4<jh
new QuickSort(), m\/(w_/?
new ImprovedQuickSort(), }G$]LWgQx
new MergeSort(),
yz+, gLY
new ImprovedMergeSort(), ~#\i!I;RY}
new HeapSort() 6pE :A@
}; N^VD=<#T
/RLq>#:h**
public static String toString(int algorithm){ `nR %Cav,U
return name[algorithm-1]; =\ )IaZ
} u!N{y,7W)
Q4s&E\}
public static void sort(int[] data, int algorithm) { O gmO&cE
impl[algorithm-1].sort(data); 8|twV35
} }wSi~^*
h!&sNzX
public static interface Sort { PU9`<3z5
public void sort(int[] data); <I;*[;AK
} U3vEdw<lV
[-*F"}D,
public static void swap(int[] data, int i, int j) { ~#:e *:ro
int temp = data; 'k&?DZ!
data = data[j]; 7dh1W@\
data[j] = temp; ~$O1`IT
} 09M;}4ev&7
} o7&4G$FX~