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。 =L$RY2S"
插入排序: ,^xsdqpe
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package org.rut.util.algorithm.support; #l2WRw_t
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import org.rut.util.algorithm.SortUtil; fZd~},X
/** iEFS>kL8e
* @author treeroot lSId<v?C>
* @since 2006-2-2 u*;53 43
* @version 1.0 y(#F&^|
*/ gvZLW!={
public class InsertSort implements SortUtil.Sort{ ,/L_9wV-\
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/* (non-Javadoc) J! eVw\6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q33!X!br
*/ E{9{%J
public void sort(int[] data) { cmh/a~vYaY
int temp; Y@%6*uTLa
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^_Z Qf
} PzTTL=G +
} VA'<
} fs]Zw mA^
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} o:Z*F0qm
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冒泡排序: {_MU0=7c\
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package org.rut.util.algorithm.support; 8CSvg{B
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import org.rut.util.algorithm.SortUtil; { K0T%.G
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/** Q+ST8
* @author treeroot !xqG-rd
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* @since 2006-2-2 <ct {D|mm
* @version 1.0 $X&OGTlw^
*/ qaGIU`}:$A
public class BubbleSort implements SortUtil.Sort{ 1aMBCh<}JN
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/* (non-Javadoc) s9GPDfZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3S2'JOTY
*/ /s*>V@Q
public void sort(int[] data) { @x J^JcE
int temp; +`Bn]e8O
for(int i=0;i for(int j=data.length-1;j>i;j--){ qK1V!a2
if(data[j] SortUtil.swap(data,j,j-1); j1iC1=`ZM
} |95/'a*
} z=Vvb
} =<_5gR
} o5$K^2^g
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} ~D=@4(f8|
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选择排序: }Voh5*$E`
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package org.rut.util.algorithm.support; #f~a\}$I
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import org.rut.util.algorithm.SortUtil; KE&}*Nf[
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/** TxCQGzqe
* @author treeroot {n{}Y.
* @since 2006-2-2 1DcarF
* @version 1.0 t3>rf3v
*/ Wkk Nyg,
public class SelectionSort implements SortUtil.Sort { `pMI[pLZe
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/* QPcB_wUqu
* (non-Javadoc) @Kr)$F
* '> Q$5R1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u.=;A#
*/ 9h(hx7]
public void sort(int[] data) { GKtQ>39B
int temp; ggTjd"|)
for (int i = 0; i < data.length; i++) { ^aW[~ c
int lowIndex = i; fx-*')
for (int j = data.length - 1; j > i; j--) { E\S&} K,s
if (data[j] < data[lowIndex]) { NFc8"7Mz}
lowIndex = j; r*wKYb
} Pvw%,=41O
} \veL 5
SortUtil.swap(data,i,lowIndex); !v L:P2
} ) :@%xoF5
} 5w1[KO#K|
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} m^.C(}
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Shell排序: @ 1A_eF
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package org.rut.util.algorithm.support; SXz([Z{)
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import org.rut.util.algorithm.SortUtil; ;/T-rVND
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/** )+,jal^7
* @author treeroot hFfaaB
* @since 2006-2-2 se HbwO3 b
* @version 1.0 }z+"3A|
*/ r![JPhei
public class ShellSort implements SortUtil.Sort{ a4RFn\4?
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/* (non-Javadoc) zpqNmxmF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~{G:,|`
*/ 5qSZ>DZ
public void sort(int[] data) { )"uG*}\?b
for(int i=data.length/2;i>2;i/=2){ veg!mY2&
for(int j=0;j insertSort(data,j,i); 3og$'#6P
} &Bdt+OQ ;
} g)G7
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insertSort(data,0,1); Exo`Z`m`U
} cX]{RVZo-/
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/** GLcZ=6)"'
* @param data '9F{.]
* @param j z E7ocul
* @param i e hB1`%@
*/ .$x[!fuuR&
private void insertSort(int[] data, int start, int inc) { <OO/Tn'a
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); $@f3=NJ4k
} aw@Aoq
} 'krMVC-
} an5kR_=
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} ;s/b_RN
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快速排序: U;A5-|C
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package org.rut.util.algorithm.support; b2@x(5#
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import org.rut.util.algorithm.SortUtil; F vk:c-
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/** (7#lN
* @author treeroot q^+NhAMz
* @since 2006-2-2 ~ M>zO#U6
* @version 1.0 qQRYHo>/e
*/ *UxB`iA
public class QuickSort implements SortUtil.Sort{ bOGDz|H``
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/* (non-Javadoc) |+=:x]#vV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3jdB8a]T_
*/
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public void sort(int[] data) { uV:uXQni``
quickSort(data,0,data.length-1); 7[<sl35
} &,kB7r"
private void quickSort(int[] data,int i,int j){ I;4CvoT
int pivotIndex=(i+j)/2; }AfPBfgC1z
file://swap #CP, \G
SortUtil.swap(data,pivotIndex,j); `; %aQR
3\.)y49,1
int k=partition(data,i-1,j,data[j]); 3a[(GW _
SortUtil.swap(data,k,j); 64j 4P 7
if((k-i)>1) quickSort(data,i,k-1); ik NFW*p
if((j-k)>1) quickSort(data,k+1,j); A,[m=9V
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} PC7.+;1
/** )Ua2x@j'C@
* @param data z4+6k-#):
* @param i 9wJmX<Rm
* @param j v@s`l#
* @return ;{7lc9uRj
*/ @"7dk.|
private int partition(int[] data, int l, int r,int pivot) { hG HzO
do{ Llc|j&yHQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >f05+%^[
SortUtil.swap(data,l,r); pXlBKJmW
} `i^1U O
while(l SortUtil.swap(data,l,r); "J:NW_U
return l; \$|UFx
} T.dO0$,Q@$
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} E1v<-UPbA
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改进后的快速排序: g]Ny?61
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package org.rut.util.algorithm.support; H#`?toS
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import org.rut.util.algorithm.SortUtil; #_|^C(]!
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/** I~6 ;9TlQ
* @author treeroot d>-EtWd
* @since 2006-2-2 z2zp c^i
* @version 1.0 | N,nt@~
*/ kYa'
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public class ImprovedQuickSort implements SortUtil.Sort { HliY
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private static int MAX_STACK_SIZE=4096; 5h7DVr!
private static int THRESHOLD=10; bu5)~|?{t
/* (non-Javadoc) #7"5Y_0-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] CE2/6Ph
*/ mW9b~G3k
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; ^Wz{su2
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int top=-1; 'Em($A(
int pivot; Di=6.gm[<
int pivotIndex,l,r; O]!DNN
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stack[++top]=0; Gukq}ZQ d
stack[++top]=data.length-1; %LW~oI.
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while(top>0){ V-u\TiL
int j=stack[top--]; 4f-C]N=
int i=stack[top--]; @"2-tn@q_
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pivotIndex=(i+j)/2; 9K(b Z{
pivot=data[pivotIndex]; Q:|E
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SortUtil.swap(data,pivotIndex,j); H9[.#+ln
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file://partition P=z':4,M}
l=i-1; Y" |U$
r=j; [_Z3v,vt,
do{ <[~M|OL9q,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IrM3Uh
SortUtil.swap(data,l,r); kS!*kk*a
} % m$Mnx
while(l SortUtil.swap(data,l,r); PrxXL/6
SortUtil.swap(data,l,j); 0CYI,V
$OuA<-
if((l-i)>THRESHOLD){ $a1.c;NE'
stack[++top]=i; oLRio.u*
stack[++top]=l-1; H#akE\,
} uBJF}"4ej
if((j-l)>THRESHOLD){ M-t9zT
stack[++top]=l+1; D1a2|^zt
stack[++top]=j; eU*hqy?0
} Y?x3JU0_
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} #=m5*}=
file://new InsertSort().sort(data); hNfL /^w
insertSort(data); #+=afJ
} T;7|d5][
/** 2x
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* @param data SOJHw6
*/ Pr'py
private void insertSort(int[] data) { 35et+9
int temp; C%h_!z":
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _uacpN/<|
} @ZZ Lh=
} sj2+|>
} r v>6k:(
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} S5M t?v|K
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归并排序: 7="V7
#4?3OU#
package org.rut.util.algorithm.support; \WEC1+@
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import org.rut.util.algorithm.SortUtil; &nn":
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/** :a2?K5
* @author treeroot 0'",4=c#V
* @since 2006-2-2 4`B:Mq&j
* @version 1.0 bcg)K`'N
*/ uv4jbg}Z+3
public class MergeSort implements SortUtil.Sort{ ~-x\E#(
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/* (non-Javadoc) M_DkjuR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2t%)d9r32
*/ Q&7Qht:ea:
public void sort(int[] data) { nLQJ~("
int[] temp=new int[data.length]; A2 rRYzN;
mergeSort(data,temp,0,data.length-1); B _ >|Mo/
} mJ HX
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private void mergeSort(int[] data,int[] temp,int l,int r){ 7}MWmS^8j
int mid=(l+r)/2; oUH\SW8?
if(l==r) return ; 6$Y1[
mergeSort(data,temp,l,mid); 9dAsXEWh
mergeSort(data,temp,mid+1,r); OXo-(HLE
for(int i=l;i<=r;i++){ @g{
"
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temp=data; uM$=v]e^4
} _eS*e-@O5
int i1=l; %"tf`,d~3
int i2=mid+1; `*B8IT)
for(int cur=l;cur<=r;cur++){ BehV
:M
if(i1==mid+1) f/xBR"'
data[cur]=temp[i2++]; |?8wyP
else if(i2>r) Oc1ZIIkh\
data[cur]=temp[i1++]; WO^h\#^n
else if(temp[i1] data[cur]=temp[i1++]; vv3?ewr
y
else G.;<?W
data[cur]=temp[i2++]; Nz8iU@!a
} [(1O_X(M
} ;:OJQFu%4
M&L" yQA
} ]pb3
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改进后的归并排序: '5IJ;4k
"o`(
kYSF
package org.rut.util.algorithm.support; YV9%^ZaN7
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import org.rut.util.algorithm.SortUtil; B{Rig5Sc
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/** rW6LMkt72
* @author treeroot Y\lBPp0{\v
* @since 2006-2-2 =1D*K%
* @version 1.0 7RO=X%0A
*/ NEvt71k
public class ImprovedMergeSort implements SortUtil.Sort { }w$/x<Q[
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private static final int THRESHOLD = 10; j_Fr3BWS
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/* RZ -w,~
* (non-Javadoc) 6eb5 q/
* 7}xKiHh:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZyTah\yPM
*/ IMBqy -q
public void sort(int[] data) { RGcT
int[] temp=new int[data.length]; Qx:+n`$/
mergeSort(data,temp,0,data.length-1); j \SDw
} W[b/.u5z:
cWm.']
private void mergeSort(int[] data, int[] temp, int l, int r) { i''dY!2
int i, j, k; 0]T
;{
int mid = (l + r) / 2; iS{)Tll}&
if (l == r) 1oC/W?l^
return; 0-QkRr_I
if ((mid - l) >= THRESHOLD) Z|)~2[Roa
mergeSort(data, temp, l, mid); b{sFN!
else wM><DrQ
insertSort(data, l, mid - l + 1); =w8*n2
if ((r - mid) > THRESHOLD) >k:)'*
mergeSort(data, temp, mid + 1, r); Vi]D](^!
else t.m
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insertSort(data, mid + 1, r - mid); ivt\|
>
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for (i = l; i <= mid; i++) { *H;&hq
temp = data; SN11J+
} g?`w)O7v
for (j = 1; j <= r - mid; j++) {
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temp[r - j + 1] = data[j + mid]; 1~j.jv$
} c$p1Sovw
int a = temp[l]; 9"/{gf3D
int b = temp[r]; H94$Xi"Bd
for (i = l, j = r, k = l; k <= r; k++) { 9[:nWp^
if (a < b) { eudPp"Km
data[k] = temp[i++]; \HR QSfGt
a = temp; 4*'NpqC(_
} else { 3b|.L
Jz+
data[k] = temp[j--]; D 4@=+
b = temp[j]; {C
7=
} ]RxNSr0e
} #Qkl| h
} CnAh Ef)b
,2u]rLxx;
/** y:1?~R
* @param data qoOHWh&
* @param l VGTo$RH
* @param i b\}`L"
*/ E#T'=f[r~
private void insertSort(int[] data, int start, int len) { `9@!"p
f
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LV`- eW
} E]Kd`&^}
} 7m8L!t9
} )Y)7p//
} ^c+6?
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堆排序: MTr _8tI
b%AYYk)d?
package org.rut.util.algorithm.support; ^E>}A
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import org.rut.util.algorithm.SortUtil; jk) U~KGcg
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/** 2H4+D)
* @author treeroot N:=D@x~]
* @since 2006-2-2 d
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* @version 1.0 e;Q~P]x
*/ w:pc5N>we0
public class HeapSort implements SortUtil.Sort{ 0(teplo&P
OS,-dG(
/* (non-Javadoc) nQ8EV>j2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Bs_"
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*/ GMksr%0Pj
public void sort(int[] data) { S# SA :>8s
MaxHeap h=new MaxHeap(); N+h|Ffnp
h.init(data); x%LWcT/
for(int i=0;i h.remove(); UGl}=hwKkG
System.arraycopy(h.queue,1,data,0,data.length); E|#'u^`yv
} 'tF<7\!
K&Zdk (l)
private static class MaxHeap{ b@nbXm]Z
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void init(int[] data){ 6jom6/F 4
this.queue=new int[data.length+1]; B,}%1+*
for(int i=0;i queue[++size]=data; {?, :M
fixUp(size); 9'O<d/xj/
}
T<P4+#JK
} _)lK.5
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private int size=0; QiY7m<3
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private int[] queue; erqg|TsFj
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public int get() { N/]TZu~k z
return queue[1];
RtK/bUa
} VM|8HR7U
rY88xh^
public void remove() { /ZX8gR5x
SortUtil.swap(queue,1,size--); +STT(b Mn
fixDown(1); R0 {+Xd
} v^JyVf>
file://fixdown %J3#4gG^v
private void fixDown(int k) { B7va#'ne4{
int j; _k
_F
while ((j = k << 1) <= size) { 9v0f4Pbxm
if (j < size %26amp;%26amp; queue[j] j++; HH8a"Hq)
if (queue[k]>queue[j]) file://不用交换 _/7[=e}y
break; tlG&PVvr
SortUtil.swap(queue,j,k); ;v#~o*
k = j; ;z!~-ByzL
} 2x'JR yef
} to+jQ9q8
private void fixUp(int k) { 0G;RMR ':5
while (k > 1) { ai#0ZgO
int j = k >> 1; ^h=;]vxO
if (queue[j]>queue[k]) 65qH
break; O]i}r`E8,
SortUtil.swap(queue,j,k); %5jxq9:K
k = j; Ci=c"JdB
} /\h&t6B1
} DS-Kot(k(z
<"aPoGda
} e$ E=n
V<P@hAAr
} KG)Y{-Ao
PQ5QA61
SortUtil: 4T|b
Cs?e
QdF5Cwf4
package org.rut.util.algorithm; Q(wx nm
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import org.rut.util.algorithm.support.BubbleSort; TaKLzd2
import org.rut.util.algorithm.support.HeapSort; PgtJ3oq[}
import org.rut.util.algorithm.support.ImprovedMergeSort; -GhP9; d
import org.rut.util.algorithm.support.ImprovedQuickSort; [q?<Qe
import org.rut.util.algorithm.support.InsertSort; RP[{4Q8
import org.rut.util.algorithm.support.MergeSort; le/,R@]B9
import org.rut.util.algorithm.support.QuickSort; ,(qRc(Ho
import org.rut.util.algorithm.support.SelectionSort; 9g'LkP
import org.rut.util.algorithm.support.ShellSort; ?XrQ53
a{^m-fSaR"
/** gQWa24
* @author treeroot hYPl&^
* @since 2006-2-2 I*{4rDt
* @version 1.0 + jc!5i .
*/ Q=;U@k@>
public class SortUtil { &"f";
public final static int INSERT = 1; n}F&1Z
public final static int BUBBLE = 2; 3!XjtVhK?I
public final static int SELECTION = 3; $q6BP'7
public final static int SHELL = 4; 7K,-01-:
public final static int QUICK = 5; ?Y-%'J(
public final static int IMPROVED_QUICK = 6; LlX{#R
public final static int MERGE = 7; eKE#Yr
d=x
public final static int IMPROVED_MERGE = 8; $WyD^|~SF
public final static int HEAP = 9; Qu?R8+"KS
=RA /
public static void sort(int[] data) { QM5R`i{r
sort(data, IMPROVED_QUICK); ;RDh~EV
} @XLy7_}
private static String[] name={ `Q|*1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (eI5_`'VC
}; JjPKR?[>
PF)jdcX
private static Sort[] impl=new Sort[]{ K1mPr^3rC
new InsertSort(), *"?l ]d
new BubbleSort(), K28+]qy[
new SelectionSort(), ALrw\qV
new ShellSort(), }\tdcTMgS
new QuickSort(), v- T$:cL
new ImprovedQuickSort(), ;X?}x%$
new MergeSort(), 1O/+8yw
new ImprovedMergeSort(), R;s?$;I
new HeapSort() l~c@^!
}; 7X0Lq}G@
~ELNyI11
public static String toString(int algorithm){ 2`7==?
return name[algorithm-1]; Oft-w)cYz,
} E7t+E)=8
7!@-*/|!S9
public static void sort(int[] data, int algorithm) { QLXN*c
impl[algorithm-1].sort(data); cii_U=
} wQqb`l7+
Isvx7$Vu+
public static interface Sort { 6h|q'.Y
public void sort(int[] data); z.7cy@N6
} f[<m<I
B:5Rr}eY+
public static void swap(int[] data, int i, int j) { )WRLBFi3
int temp = data; "'c
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data = data[j]; CJ1 7n
data[j] = temp; G,?hp>lj
} QQ%D8$k"
} ]RPs|R?