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。 uI?Z_
插入排序: Il*!iX|23<
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package org.rut.util.algorithm.support; 9DM,,h<`
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import org.rut.util.algorithm.SortUtil; 9{Et v w
/** uHZ4
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* @author treeroot 6.KEe^[-
* @since 2006-2-2 ]
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* @version 1.0 Jh&DL8`
*/ P/1YN
public class InsertSort implements SortUtil.Sort{ 1|xe'w{
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/* (non-Javadoc) =JfwHFHd#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9oGcbD4*
*/ sK+uwt
public void sort(int[] data) { XLaD#J
int temp; ~BuBma_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F_R\
} &@CUxK
} j|Vl\Z&o)
} Xy K,
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} $"|r7n5[
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冒泡排序: K`9~#Zx$
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package org.rut.util.algorithm.support; 5j ]!r
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import org.rut.util.algorithm.SortUtil; U*Y]cohh
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/** *aM7d>nG5
* @author treeroot Zv9JkY=+@
* @since 2006-2-2 9XDSL[[
* @version 1.0 @M<qz\
[
*/ =6:9y}~
public class BubbleSort implements SortUtil.Sort{ Ym\<@[3+!
!\1)?&y9j
/* (non-Javadoc) 2[pOGc$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2>k*9kyp
*/ 25vjn 1$sW
public void sort(int[] data) { 985h]KQ
int temp; v .C
for(int i=0;i for(int j=data.length-1;j>i;j--){ RDHK'PGA
if(data[j] SortUtil.swap(data,j,j-1); H{5,
-x
} <2 [vR|Q*
} ~?aFc)
}
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} W
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} `~=z0I
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选择排序: FqbGT(QB0
aBaiXv/*
package org.rut.util.algorithm.support; }F.k,2
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import org.rut.util.algorithm.SortUtil; {vW0O &[
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/** 8VQ!&^9!U#
* @author treeroot 5;/q[oXI
* @since 2006-2-2 }2RbX,0l9
* @version 1.0 7"aN7Q+EbI
*/ &gS-.{w "
public class SelectionSort implements SortUtil.Sort { @#W4?L*D
_)= e`9%
/* mCg^Y)Q
* (non-Javadoc) 'bM=
* aLm~.@Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OwNM`xSa|\
*/ ySiZ@i4
public void sort(int[] data) { YfT
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int temp; Z>y6[o
for (int i = 0; i < data.length; i++) { b~tu;:
int lowIndex = i; qfCZ
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for (int j = data.length - 1; j > i; j--) { __tA(uA
if (data[j] < data[lowIndex]) { M"s:*c_6
lowIndex = j; !^MwE]
} ue7D'
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} n]4Elrxx
SortUtil.swap(data,i,lowIndex); (#>X*~6
} FywX
} O-p`9(_m
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} #P}n+w_@
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Shell排序: :qj^RcmVPL
# =y)Wuo=
package org.rut.util.algorithm.support; ESoC7d&.K{
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import org.rut.util.algorithm.SortUtil; N&
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/** (fl$$$
* @author treeroot {#?|&n<
* @since 2006-2-2 +(:Qf+:
* @version 1.0 (:E@kpK
*/ [75?cQD
public class ShellSort implements SortUtil.Sort{ Yh!k uS#<
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/* (non-Javadoc) BH}Cx[n?~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "eTALRL'o
*/ -lfDoNRhQ
public void sort(int[] data) { %4M,f.[e
for(int i=data.length/2;i>2;i/=2){ DS%]7,g]
for(int j=0;j insertSort(data,j,i); O[U`(A:
} @.k^ 8hc
} X8*~Cf73u
insertSort(data,0,1); F~rl24F
} Y$,~"$su|
v36Z*I6)5
/** x4LPrF1
* @param data V+lS\E.
* @param j Z5U\>7@&8
* @param i o58c!44
*/ "S'Yn-
private void insertSort(int[] data, int start, int inc) { (m Yi
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g.62XZF@
} f0^s<:*
} fsEQ4xN'
} E6xdPjoWy
p]y.N)a
} SfY 5Xgp
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快速排序: Xe:^<$z
R87@.
package org.rut.util.algorithm.support; abS~'r14
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import org.rut.util.algorithm.SortUtil; 2x|FVp
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/** cQd?,B3#F
* @author treeroot *v8daF
* @since 2006-2-2 MK
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* @version 1.0 lq3D!+m
*/ )AcevEHB
public class QuickSort implements SortUtil.Sort{ =6\^F i
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/* (non-Javadoc) (4q/LuP^d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j$6Q]5KdoS
*/ nLk`W"irM
public void sort(int[] data) { ]i,o+xBKH
quickSort(data,0,data.length-1); -Mrt%1g
} &k_LK
private void quickSort(int[] data,int i,int j){ 7KUf,0D
int pivotIndex=(i+j)/2; byt$Wqdl
file://swap 7 J6Z?
SortUtil.swap(data,pivotIndex,j); FY)]yz
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int k=partition(data,i-1,j,data[j]); |Axbx?
SortUtil.swap(data,k,j); .C+(E@ey A
if((k-i)>1) quickSort(data,i,k-1); P =Q+VIP&
if((j-k)>1) quickSort(data,k+1,j); RiQg]3oY
/|&4&$
} >tMI%r
/** 4|Y1W}!0/
* @param data 1Lje.%(E.
* @param i dS Tyx#o
* @param j wRK27=\z
* @return m&q0 _nay
*/ |XNw&X1VF
private int partition(int[] data, int l, int r,int pivot) { 47{5{/B-
do{ {/5aF_0D.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {=J:
SortUtil.swap(data,l,r); }C["'tLX
} EAWBgOO8iC
while(l SortUtil.swap(data,l,r); G9jf]Ye;
return l; )'7Qd(4WT
} ?A .ah
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} Dz2Z
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改进后的快速排序: Pq{p\Qkj
_e8v12s
package org.rut.util.algorithm.support; Hc|cA(9sh9
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import org.rut.util.algorithm.SortUtil; PMbq5
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/** ld|GY>rH
* @author treeroot 6'uCwAQU
* @since 2006-2-2 X$Q.A^9
* @version 1.0 b-<@3N.9]
*/ 726UO#*
public class ImprovedQuickSort implements SortUtil.Sort { 3PLA*n+%
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private static int MAX_STACK_SIZE=4096; 8a8D0}'
private static int THRESHOLD=10; Ie _{P&J
/* (non-Javadoc) rhaq!s38:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P&[&Dj
*/ #E\6:UnT
public void sort(int[] data) { %8Y+Df;ax
int[] stack=new int[MAX_STACK_SIZE]; 5{DwD{Q
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int top=-1; X6w+L?A
int pivot;
- 3PLP$P
int pivotIndex,l,r; ([rSYKpi
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stack[++top]=0; ld({1jpX,
stack[++top]=data.length-1; !v%>W< 3Q
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while(top>0){ 8 ?y|
int j=stack[top--]; h|Qb:zEP,
int i=stack[top--]; O<@L~S]
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pivotIndex=(i+j)/2; *h).V&::O
pivot=data[pivotIndex]; qq[Dr|%7
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SortUtil.swap(data,pivotIndex,j); <u#
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file://partition 8D? $@!-
l=i-1; /yx)_x{
r=j; &e*@:5Z:k
do{ Hdd3n6*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Mty[)+se
SortUtil.swap(data,l,r); fTK84v"7_
} %`lJA W[
while(l SortUtil.swap(data,l,r); b"trg {e
SortUtil.swap(data,l,j); *6=9 8C4I
)xz_}6b]
if((l-i)>THRESHOLD){ eFA,xzp
stack[++top]=i; 1#+|RL4o
stack[++top]=l-1; f4d-eXGwx`
} eMV8`&c'
if((j-l)>THRESHOLD){ "j8=%J{
stack[++top]=l+1; l1L8a I,8
stack[++top]=j; `e3$jy@
} JwWxM3(%t
Y8lZ]IB
} SH8zkAA7u}
file://new InsertSort().sort(data); B#5[PX
insertSort(data); -lv(@7o~
} $XkO\6kh
/** /yY} .S
* @param data fWri7|"0h
*/ tgl 4pAc
private void insertSort(int[] data) { k w
int temp; x7i<dg&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BE~-0g$W
} _]D
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} R(P(G;#j
} 0sme0"Sl
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} Sx0{]1J
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归并排序: ^f"|<r
TVSCjI
package org.rut.util.algorithm.support; Ux= B*m1@{
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import org.rut.util.algorithm.SortUtil; k:@N6K/$P^
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/** %Kp^wf#o9
* @author treeroot :kwDa
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* @since 2006-2-2 E
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* @version 1.0 1:@ScHS
*/ $T7 qd
public class MergeSort implements SortUtil.Sort{ Nvh&=%{g
15' fU!
/* (non-Javadoc) Z6Kp-z(l3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >*!^pbZfX
*/ mU]^PC2[
public void sort(int[] data) { !su773vo
int[] temp=new int[data.length]; V3a6QcG
mergeSort(data,temp,0,data.length-1); El
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} +$2`"%nBG
`GCK%evLG
private void mergeSort(int[] data,int[] temp,int l,int r){ OTJMS_IT
int mid=(l+r)/2; hJk:&!M=T
if(l==r) return ; q0vZR"y
mergeSort(data,temp,l,mid); X*5N&AJ
mergeSort(data,temp,mid+1,r); Pv\8 \,B9
for(int i=l;i<=r;i++){ \l
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temp=data; u3wd~.
} bH'2iG
int i1=l; &2q<#b
int i2=mid+1; zx.SRs$
for(int cur=l;cur<=r;cur++){ "sY}@Q7
if(i1==mid+1) b+hN\/*]
data[cur]=temp[i2++]; @qx$b~%
else if(i2>r) 8ZCA
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data[cur]=temp[i1++]; ]gaeN2
else if(temp[i1] data[cur]=temp[i1++]; ) vVf- zU
else WQD:~*C:
data[cur]=temp[i2++]; 6uUn
} Z*h}E
} fZ;}_wR-H
G8/q&6f_
} \$ss
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改进后的归并排序: .j**>&7L
elpTak@
package org.rut.util.algorithm.support; +Kg }R5+
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import org.rut.util.algorithm.SortUtil; T-/3
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/** k9:|CEP
* @author treeroot 49}WJC7
)
* @since 2006-2-2 , `EOJ"|
* @version 1.0 aD_7^8>
*/ a1%}Ee
public class ImprovedMergeSort implements SortUtil.Sort { wrX n|aV
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private static final int THRESHOLD = 10; I'p+9H$
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/* :2C
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* (non-Javadoc) >Q[ Z{
* |k%1mE(+=s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5ddfdIp
*/ S'NLj(
public void sort(int[] data) { ]IeLKcn
int[] temp=new int[data.length]; gMkSl8[
mergeSort(data,temp,0,data.length-1); V
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} |GsMLY:0
WXDo`_{R
private void mergeSort(int[] data, int[] temp, int l, int r) { `Lavjmfr2V
int i, j, k; KtH^k&z.f
int mid = (l + r) / 2; qK9A
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if (l == r) d~h;|Bl[
return; pLV
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if ((mid - l) >= THRESHOLD) |3Oyg ?2
mergeSort(data, temp, l, mid); M7 kWJ
else a)Pr&9I
insertSort(data, l, mid - l + 1); .c0u##/0
if ((r - mid) > THRESHOLD) U[8F{LX
mergeSort(data, temp, mid + 1, r); ^&8hhxCPu|
else {~s\a2YH
insertSort(data, mid + 1, r - mid); I;eoy,
X-,oL.:c
for (i = l; i <= mid; i++) { @7.7+blS"H
temp = data; r3-<~k-
} PB5h5eX
for (j = 1; j <= r - mid; j++) { .]JIo&>5
temp[r - j + 1] = data[j + mid]; k*\)z\f
} gFu,q`Vf*
int a = temp[l]; J]{<Z?%
int b = temp[r]; z,2*3Be6V
for (i = l, j = r, k = l; k <= r; k++) { $ Y^0l
if (a < b) { p4UEhT
data[k] = temp[i++]; e5n]@mu%
a = temp; <mVFC
} else { 3
v.8
data[k] = temp[j--]; V3r)u\ o'
b = temp[j]; n00J21
}
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} >D}|'.&
} Q.h.d))
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/** 8e,F{>N
* @param data )Ho"b
* @param l KZVdW@DY
* @param i 4>v O9q
*/ j6XHH&ZEb
private void insertSort(int[] data, int start, int len) { m.1-[ 2{8~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X# ud5h
} v>Kh5H5e~
} g;6/P2w
} B, H9EX
} D_ ~;!^
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堆排序: ZX1/6|_
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package org.rut.util.algorithm.support; /~f[>#
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import org.rut.util.algorithm.SortUtil; ABkDOG2br
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/** Ldv,(ZV,<
* @author treeroot o$+R
* @since 2006-2-2 -1v9
* @version 1.0 r Dlu&
*/ 6DK).|@$r
public class HeapSort implements SortUtil.Sort{ UntFkoO
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/* (non-Javadoc) a7F_{Mm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $;Iz7:#jN
*/ Jvsy
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public void sort(int[] data) { xU0iz{9
MaxHeap h=new MaxHeap(); ^"54Q^SH
h.init(data); |uw48*t
for(int i=0;i h.remove(); r^<,f[yH
System.arraycopy(h.queue,1,data,0,data.length); V&vG.HAT
} V\{@c%xW
M<*Tp^Y'
private static class MaxHeap{ ~OPBZ#
ytjZ7J['{
void init(int[] data){ [MwL=9;!H
this.queue=new int[data.length+1]; {#,5C H')
for(int i=0;i queue[++size]=data; t&=bW<6
fixUp(size); rr1'|
k"
} /HhA2 (g%
} fKqr$59>
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private int size=0; X{,mj"(w
ex1!7A!}g
private int[] queue; ly0L)L]\
&oB*gGRw=7
public int get() { xR&:]M[Vg
return queue[1]; 26nwUNak
} N0kCdJv
)j~{P
public void remove() { W)/f5[L
SortUtil.swap(queue,1,size--); 8~R.iqLoX
fixDown(1); p#]9^oA
} <3@nv%
file://fixdown !-470J
private void fixDown(int k) { F1- "yX1B
int j; 7z1@XO<D
while ((j = k << 1) <= size) { LmqSxHs0Q
if (j < size %26amp;%26amp; queue[j] j++; 'h'pM#D
if (queue[k]>queue[j]) file://不用交换 hp(MKfh H
break; ,\P|%yv
SortUtil.swap(queue,j,k); D})/2O p
k = j; 'l~7u({u
} Kb<c||2Nh5
} ]1d)jWG
private void fixUp(int k) { _BJ:GDz>
while (k > 1) { d$bO.t5CLh
int j = k >> 1; P![ZO6`:W'
if (queue[j]>queue[k]) gL&w:_
break; Tc||96%2^
SortUtil.swap(queue,j,k); vnQFq
k = j; f~a
7E;y
} e.DN,rhqI
} %#v$d
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} NcF>}f,}\
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} %po;ih$jr*
S}U_uZ$b
SortUtil: Y 'X!T8
"i/GzD7 `n
package org.rut.util.algorithm; hDW_a y4
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import org.rut.util.algorithm.support.BubbleSort; sGtxqnX:J
import org.rut.util.algorithm.support.HeapSort; BV>9U5
import org.rut.util.algorithm.support.ImprovedMergeSort; /]Y#*r8jRi
import org.rut.util.algorithm.support.ImprovedQuickSort; v@[3R7|4
import org.rut.util.algorithm.support.InsertSort; \ 9V_[xD+
import org.rut.util.algorithm.support.MergeSort; m]MR\E5]By
import org.rut.util.algorithm.support.QuickSort; 5Wa)_@qI)`
import org.rut.util.algorithm.support.SelectionSort; ^[m-PS(
import org.rut.util.algorithm.support.ShellSort; >"<s7$g
Nh^I{%.x
/** !9$}1_,is
* @author treeroot :M{
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* @since 2006-2-2 HP[B%
* @version 1.0 {-m e;ayk
*/ O4oN)
public class SortUtil { 'R+^+urq^
public final static int INSERT = 1; VpHwc!APq
public final static int BUBBLE = 2; DGCvH)Q
public final static int SELECTION = 3; ((`{-y\K
public final static int SHELL = 4; lrKT?siB
public final static int QUICK = 5; ;0oL*d[1Z
public final static int IMPROVED_QUICK = 6; JB'tc!!*
public final static int MERGE = 7; Ji!i}UjD7!
public final static int IMPROVED_MERGE = 8; i_AD3Jrs
public final static int HEAP = 9; i>h3UIx\
O*?^a7Z)4
public static void sort(int[] data) { 5ILKYUg,
sort(data, IMPROVED_QUICK); ^i_v\E[QU
} sgK =eBE
private static String[] name={ w2'z~\dG8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z'k?lkB2i
}; 2'M5+[8y8
]3*w3Y!XK
private static Sort[] impl=new Sort[]{ vW*Mf}=
new InsertSort(), RPeH [M^
new BubbleSort(), v*GS>S
new SelectionSort(), Zh;}Q(w
new ShellSort(), t6KKfb
new QuickSort(), > _sSni
new ImprovedQuickSort(), Eb9h9sjv
new MergeSort(), i{$P.i/&
new ImprovedMergeSort(), H9TeMY
new HeapSort() ",gVo\^
}; fmv:vs /9
w)vpo/?
public static String toString(int algorithm){ vmkiw1
return name[algorithm-1]; )#\3c,<Y
} Z.@n7G
LXby(|<j
public static void sort(int[] data, int algorithm) { L9Zz-Dr s
impl[algorithm-1].sort(data); Gd\/n*j
} db1ZNw
m ne)c[Qn
public static interface Sort { Z|a*"@5_
public void sort(int[] data); $04lL/;
} A#I&&qZ
^C^I
public static void swap(int[] data, int i, int j) { _)Txg2?=
int temp = data; <$A/ ('
data = data[j]; {N{eOa<HA
data[j] = temp; (oy@j{G)c6
} ojBdUG\
} LNk :PD0m