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。 xzi_u.iOP
插入排序: }SfS\b{|~
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package org.rut.util.algorithm.support; M)F_$
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import org.rut.util.algorithm.SortUtil; J&2J6Eq
/** |,bP`Z
* @author treeroot &\>=4)HB;
* @since 2006-2-2 ) $`}~
* @version 1.0 Y#,&Tu
*/ @m5c<(bkfp
public class InsertSort implements SortUtil.Sort{ N \~}`({
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/* (non-Javadoc) <ni_78
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c;?J
*/ v9\U2j
public void sort(int[] data) { 3F?7oMNIh
int temp; 0BwxPD#6bv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H#S`m
} Y\,aJL$
} ["O_Phb|
} nTtE+~u
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} pG6?"*Fz;
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冒泡排序: 2Z-[x9t
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package org.rut.util.algorithm.support; T@Bu Fr`]<
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import org.rut.util.algorithm.SortUtil; gSa !zQN6
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/** i]#"@xQ
* @author treeroot UX2@eyejQ7
* @since 2006-2-2 V3%
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* @version 1.0 S:K$fFcJ
*/ 6b7c9n Z
public class BubbleSort implements SortUtil.Sort{ y>#_LhTX-
*@ {
/* (non-Javadoc) zviTGhA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ECyG$j0
*/ _l"=#i@L
public void sort(int[] data) { "38L ,PW0Z
int temp; 28LBvJVq@
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~<.{z]*O
if(data[j] SortUtil.swap(data,j,j-1); /-knqv
} 1COSbi]
} ih|;H:"^
} SiYH@Wma
} P L7(0b%
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} q@G}Hjn
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选择排序: m-qu<4A/U|
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package org.rut.util.algorithm.support; ]K3bDU~
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import org.rut.util.algorithm.SortUtil; V'tqsKQ!
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/** ~_hA{$
* @author treeroot !F:mDZeY
* @since 2006-2-2 A^E 6)A=
* @version 1.0 3RX9LJGX
*/ 0h~{K
public class SelectionSort implements SortUtil.Sort { +1a3^A\
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/* m^\&v0
* (non-Javadoc) <-mhz`^
* NBXhcfF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) it-]-=mqb
*/
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public void sort(int[] data) { d-C%R9
int temp; ^9`|QF
for (int i = 0; i < data.length; i++) { o[1#)&
int lowIndex = i; +!GJ
for (int j = data.length - 1; j > i; j--) { ^D1gcI
if (data[j] < data[lowIndex]) { 2cO6'?b
lowIndex = j; 1S(n3(KRk$
} ]bAVOKm-
} hH9~.4+*`g
SortUtil.swap(data,i,lowIndex); JljCI@
} 2">de/jS
} 8f<y~L_(`
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} ubZJ Um
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Shell排序: wMw}3qX$j
U {Knjo S
package org.rut.util.algorithm.support; o*artMkG
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import org.rut.util.algorithm.SortUtil; oB%_yy+
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/** JQ;.+5
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* @author treeroot [mv!r-=
* @since 2006-2-2 5*f54g"'
* @version 1.0 d/T&J=
*/ (/0dtJ
public class ShellSort implements SortUtil.Sort{ D^2lb"3
@}19:A<'
/* (non-Javadoc) \>>P%EU,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J>k
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*/ aNs8T`
public void sort(int[] data) { Fc80HK5R
for(int i=data.length/2;i>2;i/=2){ dF09_nw
for(int j=0;j insertSort(data,j,i); BsA'r+ho?H
} ]kXWeY <
} AN6Q~%,
insertSort(data,0,1); z@J>A![m
} kt0xR)gU
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/** Gov.;hy
* @param data ByuBZ!m
* @param j &XdTY +
* @param i *7-rm
*/ '
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private void insertSort(int[] data, int start, int inc) { }zS5o
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int temp; H]
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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); %.D!J",\/K
} /D1Lh_,2
} $_,-ESI
} O_ZYm{T[7
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} !Vg=l[
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快速排序:
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package org.rut.util.algorithm.support; Ssuz%*
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import org.rut.util.algorithm.SortUtil; <5mv8'{L
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/** a??8)=0|}
* @author treeroot !V(r
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* @since 2006-2-2 s*_fRf:
* @version 1.0 _~MX~M3MB
*/ wPm
public class QuickSort implements SortUtil.Sort{ Cc*R3vHM6
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/* (non-Javadoc) y 3o3 G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }#u #m.
*/ j}B86oX
public void sort(int[] data) { yci} #,nb
quickSort(data,0,data.length-1); Rzh.zvxTp
} kx d*B
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private void quickSort(int[] data,int i,int j){ b1cVAfUP
int pivotIndex=(i+j)/2; <ShA_+Nd
file://swap i7 21(1
SortUtil.swap(data,pivotIndex,j); $i6z)]rjg
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int k=partition(data,i-1,j,data[j]); T)OR HJ&,
SortUtil.swap(data,k,j); ,Pcg+^A
if((k-i)>1) quickSort(data,i,k-1); [FrLxU
if((j-k)>1) quickSort(data,k+1,j); 0}qlZFB
@M B)B5
} 0ug&HEl_w
/** gpf0-g-X
* @param data |,5|ZpgL
* @param i $H[q5(_~
* @param j uSRhIKy
* @return A)3H`L
*/ [`qdpzUp&
private int partition(int[] data, int l, int r,int pivot) { r8eJ&-Yi{Z
do{ X[r0$yuE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j*gJP
!
SortUtil.swap(data,l,r); kE.4 #
} PZJ9f8V
while(l SortUtil.swap(data,l,r); IQ_s]b;z
return l; c AO:fb7
} T]Ai{@i
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} S4 Uu/EX6S
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改进后的快速排序: DBB&6~;?
M2|h.+[Q
package org.rut.util.algorithm.support; A"&<$5Q
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import org.rut.util.algorithm.SortUtil; MjQju@
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/** 0QW=2rs
* @author treeroot M /v@C*c
* @since 2006-2-2 !rr,(!Ip?O
* @version 1.0 d?J&mLQ6
*/ ;>jEeIlT
public class ImprovedQuickSort implements SortUtil.Sort { 9$z$yGjl
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private static int MAX_STACK_SIZE=4096; L;$>SLl,
private static int THRESHOLD=10; ?#xm6oe#aH
/* (non-Javadoc) *j&)=8Y|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^}p##7t[
*/ Z:7eroZP
public void sort(int[] data) { B+U:=591
int[] stack=new int[MAX_STACK_SIZE]; wB[f%mHs
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int top=-1; W"_<SYVJ
int pivot; 1u7D:h>#
int pivotIndex,l,r; ?YS>_MN
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stack[++top]=0; &=jPt%7#M
stack[++top]=data.length-1; _Iav2=0Wi
} v:YSG
while(top>0){ -ycYQ~R
int j=stack[top--]; mc8Q2eQat}
int i=stack[top--]; e
}?.3,?
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pivotIndex=(i+j)/2; ed#fDMXGQ%
pivot=data[pivotIndex]; ;z.niX .fx
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SortUtil.swap(data,pivotIndex,j); 0>7Ij7\[8
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1
file://partition ~[t#$2d}
l=i-1; ` qs}L
r=j; "W%YsN0
do{ X1`3KqK<9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gh?[x.U
SortUtil.swap(data,l,r); o4WQA"VxM
} /CNsGx%%
while(l SortUtil.swap(data,l,r); ?@$xLUHR4
SortUtil.swap(data,l,j); czD"mI!
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if((l-i)>THRESHOLD){ >x;\H(g
stack[++top]=i; {@)ZXg
stack[++top]=l-1; 4 O8ct,Y
} $$NWN?H~
if((j-l)>THRESHOLD){ oH%[8!#
stack[++top]=l+1; O8$~dzf,2
stack[++top]=j; w=WF$)ZU
} 6d6cZGS[:
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} Ld}?da Pj
file://new InsertSort().sort(data); Fb]+h)on
insertSort(data); zG6l8%q'UE
} !9_(y~g{N
/** "4\
* @param data 7[;!e nO
*/ >bf.T7wy
private void insertSort(int[] data) { mW%8`$rVEO
int temp; s<F*kLib
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zyz#xMmM
} gPMfn:a-8
} s%K( hk
} Mww ^
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} H)D|lt5xy
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归并排序: K9k!P8Rd
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package org.rut.util.algorithm.support; n>y,{"J{
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import org.rut.util.algorithm.SortUtil; ]A=\P,D
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/** )xV37]
* @author treeroot Fk/I
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* @since 2006-2-2 ZgxB7zl//
* @version 1.0 G9Uc
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*/ Z\CvaX
public class MergeSort implements SortUtil.Sort{ Ie.
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/* (non-Javadoc) (O0 Ry2uk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r$={_M$
*/
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public void sort(int[] data) { c}qpmW F
int[] temp=new int[data.length]; V'XEz;Ze
mergeSort(data,temp,0,data.length-1); Qi`3$<W>
} "frZ%mv
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private void mergeSort(int[] data,int[] temp,int l,int r){ gE2(E0H
int mid=(l+r)/2; /fp8tL2Y
if(l==r) return ; 3E|||3rf
mergeSort(data,temp,l,mid); jDY
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mergeSort(data,temp,mid+1,r); Ol }5ry
for(int i=l;i<=r;i++){ hI86WP9*
temp=data; bu _ @>`S
} }MRgNr'k
int i1=l; >6o <Q
int i2=mid+1; 1z6aMd6.
for(int cur=l;cur<=r;cur++){ Z\IM~-
if(i1==mid+1) y 9]d{:9
data[cur]=temp[i2++]; lw9jk`7^
else if(i2>r) LBy`N_@
data[cur]=temp[i1++]; Qjj }k)
else if(temp[i1] data[cur]=temp[i1++]; ES+CAwqf
else pKc!sdC
data[cur]=temp[i2++]; kBR=a%kG
} EE 1D>I
} =IMmtOvJ
_h-agn4[i
} 3<r7"/5
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改进后的归并排序: `Ow]@flLI
VAL?
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package org.rut.util.algorithm.support; FLMiW]?x
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import org.rut.util.algorithm.SortUtil; z[c8W@OJ
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/** {zcG%b WJ
* @author treeroot Ep;uz5 ^8
* @since 2006-2-2 `nyz,
* @version 1.0 .4CDQ&B0K
*/ F+H]{ss>
public class ImprovedMergeSort implements SortUtil.Sort { r*`e%`HU
@GKDSS4jv
private static final int THRESHOLD = 10; l7VO8p]y[R
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/* .z,-ThTH@\
* (non-Javadoc) ElW\;C:K*
* L>14=Pr^(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z2]0brV
*/ MF"*xr v
public void sort(int[] data) { S5hc@^|0Z
int[] temp=new int[data.length]; arm_SyL0
mergeSort(data,temp,0,data.length-1); XS&Pc
} *U1*/Q.
[}4zqY{
private void mergeSort(int[] data, int[] temp, int l, int r) { #g6 _)B=S
int i, j, k; H2jypVs$2
int mid = (l + r) / 2; X
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if (l == r) Y5GN7.
return; $Lstq_x+
if ((mid - l) >= THRESHOLD) ejV`W7U
mergeSort(data, temp, l, mid); eQ[akVMk
else lu{
*]!
insertSort(data, l, mid - l + 1); j-1V,V=
if ((r - mid) > THRESHOLD) oYw?kxRZ
mergeSort(data, temp, mid + 1, r); R1LirZlzJ
else y ~
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insertSort(data, mid + 1, r - mid); mx}5":}
h~#F2#.
for (i = l; i <= mid; i++) { \ZcI{t'a
temp = data; >k"O3Pc@
} SdlO]y9E
for (j = 1; j <= r - mid; j++) { O<s7VHj
temp[r - j + 1] = data[j + mid]; QwhO/
} |^ 8ND#x
int a = temp[l]; 55O}S Us!P
int b = temp[r]; VjWJx^ZL#
for (i = l, j = r, k = l; k <= r; k++) { Hi[lN7ma8
if (a < b) { q<E7qY+
data[k] = temp[i++]; c/K#W$ l
a = temp; e W8cI)wU
} else { !b`fykC
data[k] = temp[j--]; tQzbYzGb7
b = temp[j]; [1(eSH
} hD5@PeLh
} \5}PF+)|
} ;b [>{Q;
=r/K#hOR\J
/** 6E) T;R(@
* @param data ^IiA(?8
* @param l w]MI3_|'r(
* @param i ODu/B'*
*/ oX)a6FXK>
private void insertSort(int[] data, int start, int len) { l)$mpMgAD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [Z/P[370
} h's[)
t
} AIOGa<^
} @].s^ss9_
} b$Hbo;_
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堆排序: g=D]=&H
M{p6&eg
package org.rut.util.algorithm.support; R,D/:k'~k
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import org.rut.util.algorithm.SortUtil; Ut~YvWc9
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/** {@KLN<
* @author treeroot ruagJS)+
* @since 2006-2-2 kVtP~
* @version 1.0 *P
*.'XM
*/ :c]y/lQmV
public class HeapSort implements SortUtil.Sort{ g[i;>XyP
3\ajnd|
/* (non-Javadoc) D7pQWlN\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y_*KAr'{P
*/ @GAj%MK$
public void sort(int[] data) { ;L87
%P(.
MaxHeap h=new MaxHeap(); s8(Z&pQ
h.init(data); <6]Hj2
for(int i=0;i h.remove(); \KJTR0EB:>
System.arraycopy(h.queue,1,data,0,data.length); iJ58RY
} 4Ty?>'*|
xy>$^/[$
private static class MaxHeap{ ,eebO~7vB
\|X
1
void init(int[] data){ [x>Pf1
this.queue=new int[data.length+1]; 9hK8dJw
for(int i=0;i queue[++size]=data; Qq{tX
fixUp(size); e#5WX
} j\KOKvY)
} iU.` TqR7
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private int size=0; u^C\aujg
K'8o'S_bF
private int[] queue; <EyJ $$
d.ywH;
public int get() { @ ~{TL
return queue[1]; f4<~_ZGr
} 7]u_
,FYA*}[
public void remove() { :Dr4?6hdr
SortUtil.swap(queue,1,size--); CNuE9|W(vI
fixDown(1); gz'{l[
} \l(}8;5}
file://fixdown miBCq l@x
private void fixDown(int k) { G8F;fG N
int j; Nc6y]eGz
while ((j = k << 1) <= size) { *C)m#[#:u
if (j < size %26amp;%26amp; queue[j] j++; o r ~@!
if (queue[k]>queue[j]) file://不用交换 7g8\q@',
break; SN[yC
SortUtil.swap(queue,j,k); $hJ 4=F
k = j; .nr%c*JUp
} x?6^EB|@
} !K_<7iExI\
private void fixUp(int k) { \Q`#E'?
while (k > 1) { LCRWC`%&
int j = k >> 1; hBZh0xy
if (queue[j]>queue[k]) GXx'"SK9
break; d?U,}tv
SortUtil.swap(queue,j,k); fX:G;vYn
k = j; .h
w(;
} QncjSaEE
} S%
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} B$=1@
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} 31g1zdT!
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SortUtil: 3Qv9=q|[b
fm%4ab30T
package org.rut.util.algorithm; ,9:v2=C_
2DZ&g\|
import org.rut.util.algorithm.support.BubbleSort; -K^(L#G
import org.rut.util.algorithm.support.HeapSort; muK)Yw[#N
import org.rut.util.algorithm.support.ImprovedMergeSort; >SZuN"r8`
import org.rut.util.algorithm.support.ImprovedQuickSort; -uAGG?ZER
import org.rut.util.algorithm.support.InsertSort; M+=q"#&
import org.rut.util.algorithm.support.MergeSort; ' z^v}~
import org.rut.util.algorithm.support.QuickSort; cw
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import org.rut.util.algorithm.support.SelectionSort; _Axw$oYS
import org.rut.util.algorithm.support.ShellSort; %AgCE"!
5=poe@1g
/** `EP-Qlm
* @author treeroot N:^4OnVR
* @since 2006-2-2 00W_XhJ
* @version 1.0 <1V>0[[e
*/ zS\m8[+]
public class SortUtil { ='/#G0W
public final static int INSERT = 1; }q/[\3
public final static int BUBBLE = 2; 5',b~Pp
public final static int SELECTION = 3; R;/LB^X]
public final static int SHELL = 4; 2zjY|g/
public final static int QUICK = 5; D1fUEHB}A8
public final static int IMPROVED_QUICK = 6; )A;jBfr
public final static int MERGE = 7; o5z&sRZ
public final static int IMPROVED_MERGE = 8; v<} $d.&*
public final static int HEAP = 9; &M\qVL%w
\iwUsv>SB
public static void sort(int[] data) { wzI*QXV2s
sort(data, IMPROVED_QUICK); d D^?%,a
} K8iQ?
private static String[] name={ n
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {6*UtG
}; n*=Tm
KQ
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private static Sort[] impl=new Sort[]{ j]9,yi
new InsertSort(), y3 S T"U
new BubbleSort(), |R Qa.^.
new SelectionSort(), .w~L0(
new ShellSort(), 1 rmN)
new QuickSort(), sMw"C~XL
new ImprovedQuickSort(), p_sqw~)^%
new MergeSort(), .O4=[wE!U
new ImprovedMergeSort(), `O,"mm^@U
new HeapSort() 0c#|LF_
}; w4&-9[@Y
,S3uY6,
public static String toString(int algorithm){ f2$<4Hhmm
return name[algorithm-1]; M<)Vtn
} IC. R4-
6}mSA@4&
public static void sort(int[] data, int algorithm) { u7u1lx>S
impl[algorithm-1].sort(data); L:_pJP
} H,1Iz@W1
A%#."2vq~
public static interface Sort { h3-dJgb
public void sort(int[] data); s[/)v:
} /%^^hr
3DrW[\
public static void swap(int[] data, int i, int j) { O6!:Qd
int temp = data; EO.}{1m=hx
data = data[j]; x8h=3e$
data[j] = temp; FiN B$A
} rOq>jvy
} V_Y2 @4