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。 YCO:bBmp:
插入排序: {C6;$#7P
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package org.rut.util.algorithm.support; T9-a
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import org.rut.util.algorithm.SortUtil; T
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/** |9]K:A
* @author treeroot
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* @since 2006-2-2 #9VY[<
* @version 1.0 #/<Y!qV&
*/ 4 GW[GT
public class InsertSort implements SortUtil.Sort{ g}QTZT8
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/* (non-Javadoc) 4ZpF1Zc4B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5O
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*/ P%HyIODS
public void sort(int[] data) { *%'7~58ObS
int temp; }yDq\5s
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v:1Vli.
} 9mphj)`d;#
} _C=[bI@
} >0#q!H,X
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} _)2TLA
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冒泡排序: +N:6wZ7<f
xGv,%'u\
package org.rut.util.algorithm.support; ]},Q`n>$
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import org.rut.util.algorithm.SortUtil; wg0.i?R-]
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/** -Bv1}xf=6
* @author treeroot 9k[},MM
* @since 2006-2-2 @i-@mxk6<
* @version 1.0 DeQ'U!?+N
*/ b:cK >fh0_
public class BubbleSort implements SortUtil.Sort{ ~{Rt4o _W
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/* (non-Javadoc) @aN=U=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +{i"G,3
*/ ef:$1VIBda
public void sort(int[] data) { lY9M<8g
int temp; N%|Vzc
for(int i=0;i for(int j=data.length-1;j>i;j--){ xh^ZI6L<
if(data[j] SortUtil.swap(data,j,j-1); =M{CZm
} } %CbZ/7&
} T-2p`b}hW
} bK$D lBZ
} `yXx[deY
mW0&uSMD
} ieRBD6_
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选择排序: 8kM0
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package org.rut.util.algorithm.support; s1 ^mk]
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import org.rut.util.algorithm.SortUtil; c0Ro3j\p
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/** &\lS
* @author treeroot [piF MxZP
* @since 2006-2-2 hIo S#]
* @version 1.0 Q*&aC|b&
*/ I+j|'=M
public class SelectionSort implements SortUtil.Sort { SOQ-D4q
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/* gXLZ) >+A+
* (non-Javadoc) \{=`F`oB=
* xgqv2s>L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3/IWO4?_
*/ dzE Q$u/I
public void sort(int[] data) { wt=>{JM
int temp; E(3+o\w
for (int i = 0; i < data.length; i++) { = *;Xc-_
int lowIndex = i; '[yqi1
&
for (int j = data.length - 1; j > i; j--) { mImbS)V
if (data[j] < data[lowIndex]) { 2T(,H.O
lowIndex = j; hB$Y4~T%
} m/c&/6nk
} %OTA5
SortUtil.swap(data,i,lowIndex); d7tD|[(J
} SAE'?_
} K!D!b'|bb
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} R{xyme@"^
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Shell排序: {}J@+Zsi
r~G]2*3
package org.rut.util.algorithm.support; *[1u[H9Cv
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import org.rut.util.algorithm.SortUtil; &;h~JS=
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/** 1s}NQ3
* @author treeroot CX ]\Q-y
* @since 2006-2-2
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* @version 1.0 kGuk
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*/ R4~zL!7;
public class ShellSort implements SortUtil.Sort{ Wt)SdF=U/
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/* (non-Javadoc) ZOrTbik
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @U
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*/ 3+8"
public void sort(int[] data) { Y:"v=EhB
for(int i=data.length/2;i>2;i/=2){ ]D) 'I`
for(int j=0;j insertSort(data,j,i); m!#)JFe67
} Ad`[Rt']kI
} B`?N0t%X
insertSort(data,0,1); rv%ye
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} C=dx4U~
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/** C/CfjRzd
* @param data #?$'nya*u
* @param j aa0`y
* @param i iy.%kHC
*/ @
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private void insertSort(int[] data, int start, int inc) { ULNAH`{D
int temp; v<7Gln
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D _bkUR1
} {r].SrW9s9
} mj(&`HRs4
} Mi/ &$"=
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} }$0xt' q&
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快速排序: %7(kP}y*
Y0X"Zw
package org.rut.util.algorithm.support; -#S)}NEn
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import org.rut.util.algorithm.SortUtil; Nr]8P/[~
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/** yA?ENAM
* @author treeroot NO+
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* @since 2006-2-2 2%{YYT
* @version 1.0 hM36QOdm
*/ `z?KL(rI
public class QuickSort implements SortUtil.Sort{ i (%tHa37
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/* (non-Javadoc) gP%|:"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) znQ'm^ h
*/ O+E1M=R6h
public void sort(int[] data) { aucZJjH
quickSort(data,0,data.length-1); S[L#M;n
} R*Xu(89
private void quickSort(int[] data,int i,int j){ 0tW<LR-}E
int pivotIndex=(i+j)/2; Pn+IJ=0Y
file://swap ,XeyE;||
SortUtil.swap(data,pivotIndex,j); Q_QKm0!
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int k=partition(data,i-1,j,data[j]); f
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SortUtil.swap(data,k,j); s,$Z("B
if((k-i)>1) quickSort(data,i,k-1); sw41wj
if((j-k)>1) quickSort(data,k+1,j); UBhciZ
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} uO
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/** 9RCO|J
* @param data dcl.wD0~V
* @param i J+}+"h~.
* @param j {ywXz|TP
* @return wUK7um
*/ %qS]NC
private int partition(int[] data, int l, int r,int pivot) { eC>"my`
do{ 8:P*z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C@y}*XV[b
SortUtil.swap(data,l,r); SLJ&{`"7
} 9@#h}E1$
while(l SortUtil.swap(data,l,r); S(>@:`=
return l; n%0]V Xx#
} 2/v35| ?
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} 4-7kS85
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改进后的快速排序: fjIcB+Z
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package org.rut.util.algorithm.support; zd*3R+>U'>
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import org.rut.util.algorithm.SortUtil; #cj\~T.,,
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/** )YzH k ;(
* @author treeroot G}!7tU
* @since 2006-2-2 xH_A@hf;
* @version 1.0 ,&.W6sW
*/ Z0[)u_<
public class ImprovedQuickSort implements SortUtil.Sort { )%iRZ\`f
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private static int MAX_STACK_SIZE=4096; JkSdLj
private static int THRESHOLD=10; Si?$\H*:
/* (non-Javadoc) >aEL;V=}P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G3RrjWtO
*/ [!1)mR
public void sort(int[] data) { Fw_
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int[] stack=new int[MAX_STACK_SIZE]; )p$\gwr=2
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int top=-1; 4meidKw]
int pivot; ] vC=.&]
int pivotIndex,l,r; 1Yc%0L(
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stack[++top]=0; O^.%C`*
stack[++top]=data.length-1; a'@-"qk
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while(top>0){ I86e&"40
int j=stack[top--]; 'oz hz2s
int i=stack[top--]; Q~fwWp-J
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pivotIndex=(i+j)/2; *0%4l_i
pivot=data[pivotIndex]; )n\*ht7
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SortUtil.swap(data,pivotIndex,j); gw_|C|!P
p=!#],[
file://partition BRQ"A,
l=i-1; aB6Ye/Io
r=j; &EAk
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do{ [096CK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]>tq|R78
SortUtil.swap(data,l,r); ,f}h}
} H4M{_2DO
while(l SortUtil.swap(data,l,r); NH'1rt(w
SortUtil.swap(data,l,j); 9<xTu>7J
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if((l-i)>THRESHOLD){ 8AT;8I<K
stack[++top]=i; G/v|!}?wG
stack[++top]=l-1; ds-
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} eYJ{LPo
if((j-l)>THRESHOLD){ _h0-
stack[++top]=l+1; c {1V.
stack[++top]=j; ZhH+D`9
} mfXD1]<.
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} o_iEkn
file://new InsertSort().sort(data); +"'F Be
insertSort(data); ]]>nbgGn#
} H76E+AY
/** ecn}iN
* @param data :/+>e
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*/ B;VH `*+X
private void insertSort(int[] data) { >&bv\R/
int temp; )T>8XCL\}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 82lr4
} \X&]FZ(*
} <5dH *K
} x+4vss
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} (nGkZ}p
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归并排序: HtxLMzgz<<
#nKRTb+{
package org.rut.util.algorithm.support; g^1r0.Sp{8
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import org.rut.util.algorithm.SortUtil; YU&4yk lE
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/** '<TD6jBs
* @author treeroot Q~phGD3!~
* @since 2006-2-2 ]bIt@GB
* @version 1.0 &]w#z=5SXi
*/ DL,[k
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public class MergeSort implements SortUtil.Sort{ l$F_"o?&S@
l{8CISO*
/* (non-Javadoc) VSh !4z1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bZiyapM
*/ +4Q[N;[+*
public void sort(int[] data) { qYx!jA]O
int[] temp=new int[data.length]; B$ui:R/ t
mergeSort(data,temp,0,data.length-1); pjACFVMFX
} zt?h^zf}
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private void mergeSort(int[] data,int[] temp,int l,int r){ hGvq T, '
int mid=(l+r)/2; d>&\V)E
if(l==r) return ; @d&g/ccMxd
mergeSort(data,temp,l,mid); 'GkvUrD9D$
mergeSort(data,temp,mid+1,r); %*6RzJO6
for(int i=l;i<=r;i++){ sc%dh?m7
temp=data; Vn'?3Eb<
} d<#p %$A4
int i1=l; QO2Ut!Y
int i2=mid+1; 7{-@}j`
for(int cur=l;cur<=r;cur++){ W,Ty=:qm*
if(i1==mid+1) _
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data[cur]=temp[i2++]; K5{{:NR$
else if(i2>r) GA\2i0ow
data[cur]=temp[i1++]; Rb#/qkk/
else if(temp[i1] data[cur]=temp[i1++]; pw=F' Y@N
else Uj,g]e8e
data[cur]=temp[i2++]; *6XRjq^#
} EY~7oNfc`R
} !
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8
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} ABcBEv3
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改进后的归并排序: k{a)gFH
O
k d+l k:
package org.rut.util.algorithm.support; Ah (iE
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import org.rut.util.algorithm.SortUtil; I0iY+@^5
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/** 7,h3V=^)Q
* @author treeroot y:.?5KsPI
* @since 2006-2-2 !N1J@LT5h
* @version 1.0 ;|!MI'Af
*/ ugI#ZFjJWE
public class ImprovedMergeSort implements SortUtil.Sort { x9%-plP
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private static final int THRESHOLD = 10; 1aq2aLx
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/* .a,(pq Jg
* (non-Javadoc) F$h'p4$T
* &$F[/[Ds+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3p_b8K_bG
*/ @bT3'K-4
public void sort(int[] data) { z?kd'j`FG
int[] temp=new int[data.length]; \-OC|\{32
mergeSort(data,temp,0,data.length-1); D"cKlp-I6|
} Z(HZB
cz#_<8'N
private void mergeSort(int[] data, int[] temp, int l, int r) { 4[1k\
int i, j, k; lUHtjr
int mid = (l + r) / 2; vL$|9|W(
if (l == r)
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return; "y$ qrN-
if ((mid - l) >= THRESHOLD) 9 #Y2`pT
mergeSort(data, temp, l, mid); zmb@*/fK
else \i0-o8q@I
insertSort(data, l, mid - l + 1); A*F9\mjI5
if ((r - mid) > THRESHOLD) E~RV1)
mergeSort(data, temp, mid + 1, r); Sph*1c(R
else hM>*a!)U
insertSort(data, mid + 1, r - mid); = /Wu'gG)
@+&'%1
for (i = l; i <= mid; i++) { 4gOgWBv
temp = data; #V[SQ=>x[
} | ]# +v@
for (j = 1; j <= r - mid; j++) { ]_u`EvEx6
temp[r - j + 1] = data[j + mid]; o@3B(j;J`
} /UHp [yod
int a = temp[l]; eu9w|g
int b = temp[r]; X`1p'JD
for (i = l, j = r, k = l; k <= r; k++) { t#5:\U5r.
if (a < b) { TEWAZVE*
data[k] = temp[i++]; Pbe7SRdr^
a = temp; <tuS,.
} else { Dx3 %KS
data[k] = temp[j--]; c&*l"
b = temp[j]; hk}
t:<
} h$Tr sO
} [4>r6Hqxr
} Ea]T>4
=/9<(Tt%m
/** @.ZL7$|d
* @param data io2@}xZF
* @param l oy5+}`
* @param i -k{Jp/-D
*/ L\L"mc|O
private void insertSort(int[] data, int start, int len) { 7|Dn+=
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lw[<STpD;
} f`|G]da-3o
} fY_%33_I$
} TwFb%YM
} JZ=5Bpw
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堆排序: 4SR(->@
g1@wf
package org.rut.util.algorithm.support; j Nc<~{/
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import org.rut.util.algorithm.SortUtil; s;1e0n
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/** |>2:eH
* @author treeroot CH;;V3
* @since 2006-2-2 tpYa?ZCM
* @version 1.0 eYEc^nC,c)
*/ A1-qtAO]
public class HeapSort implements SortUtil.Sort{ ZEGd4_ux
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/* (non-Javadoc) ]:et~pfW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w>vH8f
*/ :JlDi>B
public void sort(int[] data) { D|Si)_
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MaxHeap h=new MaxHeap(); zfjw;sUX
h.init(data); ?"j@;/=
for(int i=0;i h.remove(); 9":2"<'+
System.arraycopy(h.queue,1,data,0,data.length); #ElejQ|?
} uD(t`W"
VAKy^nR5j
private static class MaxHeap{ xl2g0?
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void init(int[] data){ .pvxh|V
this.queue=new int[data.length+1]; <xlm
K(
for(int i=0;i queue[++size]=data; Mm#[&j[Y
fixUp(size); gs`> C(
} [5Y<7DS
} <&U!N'CE
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private int size=0; }-p,iTm
zu<3^=3
private int[] queue; @^?XaU
kon=il<@
public int get() { [6RfS
return queue[1]; 0x5xLg;Q
} o.^y1mH'
2U9&l1P=
public void remove() { ` X}85
SortUtil.swap(queue,1,size--); / Z!i;@Wf
fixDown(1); >Z\BfH
} ]a/'6GbR
file://fixdown GZ8:e3ri
private void fixDown(int k) { I7mG/
int j; <zfKC
while ((j = k << 1) <= size) { F_ljx
if (j < size %26amp;%26amp; queue[j] j++; (M`|'o!
if (queue[k]>queue[j]) file://不用交换 Ro r2qDF
break; LC-)'Z9}5
SortUtil.swap(queue,j,k); U:|H9+5
k = j; J&6:d
} Gzm$OHbn
} o~C('1Fdb
private void fixUp(int k) { ez*jjm
while (k > 1) { iP "EA8
int j = k >> 1; =nVmthGw
if (queue[j]>queue[k]) 6vp0*ww
break; H?U't
09
SortUtil.swap(queue,j,k); <y>:B}9'
k = j; )i!^]| $
} PayV,8
} 7>-yaL{
%j{.0H
} :'*DMW~
EXpSh}
} %^.P~s6
K{b-TT
4
SortUtil: @G GccF
2c:f<>r0y
package org.rut.util.algorithm; &1Fply7(Ay
\9/1L?@
import org.rut.util.algorithm.support.BubbleSort; 2P5_zND
import org.rut.util.algorithm.support.HeapSort; @2' %o<lF
import org.rut.util.algorithm.support.ImprovedMergeSort; 4P kfUMX
import org.rut.util.algorithm.support.ImprovedQuickSort; qtzRCA!9(Z
import org.rut.util.algorithm.support.InsertSort; F~_;o+e;X
import org.rut.util.algorithm.support.MergeSort; &KqVN]1+^
import org.rut.util.algorithm.support.QuickSort; ^M|K;jt>
import org.rut.util.algorithm.support.SelectionSort; oJY[{-qW
import org.rut.util.algorithm.support.ShellSort; #@Y/{[s|@
2k1aX~?
/** #WufZ18#
* @author treeroot !R:y'Y%j
* @since 2006-2-2 cZQu *K^j
* @version 1.0 9*}gl3y
*/ ,{{SI
public class SortUtil { dr})-R
public final static int INSERT = 1; $']VQ4tZ
public final static int BUBBLE = 2; 40K2uT{cq
public final static int SELECTION = 3; <NB41/
public final static int SHELL = 4; xm H-!Da
public final static int QUICK = 5; \G;CQV#{9
public final static int IMPROVED_QUICK = 6; 7g6RiH}
public final static int MERGE = 7; zvf3b!}
public final static int IMPROVED_MERGE = 8; [7W(NeMk
public final static int HEAP = 9; \&q=@rJp(z
.3wY\W8Dr-
public static void sort(int[] data) { {}\CL#~y
sort(data, IMPROVED_QUICK); GLh]G(
} D1X{:#|
private static String[] name={ ]\;xN~l
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ' G#SLqZy
}; R^8B3-aA`
<qY5SV,
private static Sort[] impl=new Sort[]{ crn k|o
new InsertSort(), CLK^ gZ
new BubbleSort(), p4mY0Y]mP
new SelectionSort(), ]T^is>
new ShellSort(), 6
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new QuickSort(),
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new ImprovedQuickSort(), y\[r(4h
new MergeSort(), JO1
,TtA
new ImprovedMergeSort(), |:2c$zq
new HeapSort() m m, lhIh
}; ULl_\5s2
+hH}h?K
public static String toString(int algorithm){ Lq04T0
return name[algorithm-1]; Q}P-$X+/ n
} j Z'&0x"U
- L~Uu^o
public static void sort(int[] data, int algorithm) { l3J$md|f
impl[algorithm-1].sort(data); ;~/4d-
} a[C&e,)}
"!q?P"
@C
public static interface Sort { l{%a&/
public void sort(int[] data); Y';>O `
} !_^g8^>2(
Y4To@TrN#\
public static void swap(int[] data, int i, int j) { IZ~.{UQ
int temp = data; qrDcL>Hrn
data = data[j]; T[2}p=<%
data[j] = temp; 3j*'HST
} sh6(z?KP
} =_QkH!vI