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。 ?}ly`Js
插入排序: .P#+V$qhv
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package org.rut.util.algorithm.support; w#!b #TNc
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import org.rut.util.algorithm.SortUtil; DFM~jlH
/** :G[6c5j|V
* @author treeroot ,a'Y^[4k?
* @since 2006-2-2 J^gElp
* @version 1.0 L/KiE+Y
*/ |PxTm
public class InsertSort implements SortUtil.Sort{ fq<JX5DER
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/* (non-Javadoc) U+ANSW/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .^!<cFkCE
*/ s9[547?`
public void sort(int[] data) { zEy,aa:M
int temp; ',bSJ4)Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zPc kM)
} 2Fc>6]:*
} <HB@j}qi
} k1E(SXcW9
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} ;hb_jW-0W
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冒泡排序: <5E: ,<
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package org.rut.util.algorithm.support; RAU"
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import org.rut.util.algorithm.SortUtil; x%RG>),U
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/** yllEg9L0z
* @author treeroot W|CZA
* @since 2006-2-2 O6"S=o&
* @version 1.0 6%a:^f]
*/ *bSxobn
public class BubbleSort implements SortUtil.Sort{ <c.8f;1F
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/* (non-Javadoc) P$#{a2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SX]uIkw
*/ !g7lJ\B
public void sort(int[] data) { 1LVO0lT
int temp; +x]3 -s
for(int i=0;i for(int j=data.length-1;j>i;j--){ H;c3 x"
if(data[j] SortUtil.swap(data,j,j-1); qAW?\*n5N
} TD-o-*mO
} EECuJ+T
} 2(i|n=
} ?k$'po*Eq
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}
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选择排序: EE5mVC&
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package org.rut.util.algorithm.support; -]Y@_T.C
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import org.rut.util.algorithm.SortUtil; 2(AuhZ>
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/** *2>kic
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* @author treeroot W9!K~g_
* @since 2006-2-2 } /*U~!t
* @version 1.0 VRB!u420
*/ r(KAG"5
public class SelectionSort implements SortUtil.Sort { g[Q+DT
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/* ]sZ!
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* (non-Javadoc) Seh(G
* ;<l#k7 /
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >
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*/ fM`.v+
public void sort(int[] data) { P09f
int temp; -pW*6??+?
for (int i = 0; i < data.length; i++) { Q<>b3X>O
int lowIndex = i; 5tl($j
for (int j = data.length - 1; j > i; j--) { Q 6n!u;
if (data[j] < data[lowIndex]) { F%IvgXt5
lowIndex = j; fj97_Q=
} 1) Nj.#)
} -*$ s ;G#
SortUtil.swap(data,i,lowIndex); Zo<j"FG
} {s>V'+H(F
} '81c>qA
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} Mp?L9
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Shell排序: 8Dkq+H93
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package org.rut.util.algorithm.support; L6./5`bs
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import org.rut.util.algorithm.SortUtil; =2@V}
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/** .Ta (v3om%
* @author treeroot ]d~2WX Y
* @since 2006-2-2 Rga
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* @version 1.0 .: k6Kg
*/ G8&/Ic
public class ShellSort implements SortUtil.Sort{ g'AxJ
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/* (non-Javadoc) a"&cm'\lL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZeqsXz
*/ e2yCWolmTS
public void sort(int[] data) { :gn&wi
for(int i=data.length/2;i>2;i/=2){ Eh*(N(`
for(int j=0;j insertSort(data,j,i); jG{OLF6 !
} >f'aW
} '+\t,>nRkl
insertSort(data,0,1); x~Dj2F ]
} r{KQ3j9O
IGOEqUw*
/** l5#SOo\
* @param data =!\Y;rk
* @param j d ehK#8
* @param i Xe&p.v
*/ 6Ey@)p..E
private void insertSort(int[] data, int start, int inc) { waU2C2!w
int temp; h[mJ=LIrg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wjfq"7Q
} 6qSsr]
}
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} ?,i}Qr [Q
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} qOy0QZ#0
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快速排序: \ CX6~
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package org.rut.util.algorithm.support; _F5*\tQ
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import org.rut.util.algorithm.SortUtil; 0xY</S
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/** 9Dbbk/j|
* @author treeroot JT&RaFX
* @since 2006-2-2 _+X-D9j(l
* @version 1.0 1m5*MY
*/ n,d)Wwe_`y
public class QuickSort implements SortUtil.Sort{ s(KSN/
bz}-[W+
/* (non-Javadoc) .TCDv4?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pD('6C;
*/ 5M/~|"xk
public void sort(int[] data) { dI|D c
quickSort(data,0,data.length-1); !ewT#afyu(
} t3h ){jZ
private void quickSort(int[] data,int i,int j){ T.jCF~%7F
int pivotIndex=(i+j)/2; }|%1LL^pB
file://swap 6bPl(.(3
SortUtil.swap(data,pivotIndex,j); 0U~*uDU
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int k=partition(data,i-1,j,data[j]); &isKU8n
SortUtil.swap(data,k,j); {PR "}x
if((k-i)>1) quickSort(data,i,k-1); rzs-c ?
if((j-k)>1) quickSort(data,k+1,j); )xiu
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[N12X7O3
} d&\3}uH
/** ~oJ"si
* @param data =^SxZ Bn
* @param i \2]_NU5.
* @param j S@g(kIo]
* @return
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*/ ~Hu!iZ2]
private int partition(int[] data, int l, int r,int pivot) { ]T'7+5w
do{ G{I),Y~IF
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5 5m\,UG7
SortUtil.swap(data,l,r); 6']HmM
} )XHn.>]nc
while(l SortUtil.swap(data,l,r); Lx tgf2r
return l; @mmnr?_w
} k(M:#oA!
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} x
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改进后的快速排序: ,ryL("G
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package org.rut.util.algorithm.support; a HVzBcCPh
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import org.rut.util.algorithm.SortUtil; I~:gi@OVV
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/** T@Y, 7ccpd
* @author treeroot yYaoA/0
* @since 2006-2-2 G[`1Yw$
* @version 1.0 ;1s+1G}_z
*/ #n}~u@,o_
public class ImprovedQuickSort implements SortUtil.Sort { {}$Zff
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private static int MAX_STACK_SIZE=4096; ^5.XQ0n
private static int THRESHOLD=10; dI&Q5M8
/* (non-Javadoc) :W5W
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _CfJ Kp)
*/ dFF=-_O>
public void sort(int[] data) { yIrJaS-
int[] stack=new int[MAX_STACK_SIZE]; eZaSV>27
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int top=-1; E5$]0#jB
int pivot; ?3p7MjvZ
int pivotIndex,l,r; 15,JD
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stack[++top]=0; #{PwEX
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stack[++top]=data.length-1; ,zltNbu\.(
!
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while(top>0){ z9*e%$+S
int j=stack[top--]; :nQlS
int i=stack[top--]; 0/b
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pivotIndex=(i+j)/2; #{vC =m73
pivot=data[pivotIndex]; t*=[RS*
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SortUtil.swap(data,pivotIndex,j); W*t]
d
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file://partition TI8r/P?
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l=i-1; 'gvR?[!t
r=j; mL=d EQ
do{ ocFk#FW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %/"n(?$W
SortUtil.swap(data,l,r); Aeb(b+=
} 1[^YK6a/
while(l SortUtil.swap(data,l,r); #3QPcoxa
SortUtil.swap(data,l,j); u0c}[BAF
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if((l-i)>THRESHOLD){ ?%h$deJ
stack[++top]=i; 68Gywk3]=u
stack[++top]=l-1; Q-n8~Ey1a
} ;~EQS.Qp
if((j-l)>THRESHOLD){ 5$:
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stack[++top]=l+1; EU %,tp
stack[++top]=j; ^>?=L\[
} !:^q_q4
%'yrIR
} <;6{R#Tuh
file://new InsertSort().sort(data); @ M]_],
insertSort(data); "FWx;65CR
} Y @p<f5[c
/** p 1'l D
* @param data ,^1zG
*/ BVw2skOT
private void insertSort(int[] data) { RZzHlZ
int temp; ujZ`T0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bI55G#1G
} _cX}!d!j
} @"-\e|[N
} y:W6;R
V0=%$tH
} ];OvV ,*
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归并排序: Dz(\ ?
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package org.rut.util.algorithm.support; 5e/YEDP
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import org.rut.util.algorithm.SortUtil; .9rYBy
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/** ?vFy3
* @author treeroot Lwr's'ao.
* @since 2006-2-2 U`%t&7)
* @version 1.0 LE\=Y;%
*/ ->8Kd1^F
public class MergeSort implements SortUtil.Sort{ "XR=P>
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/* (non-Javadoc) STp9Gh-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~Gr,i
*/ vR!+ 8sy$
public void sort(int[] data) { QQM:[1;RT
int[] temp=new int[data.length]; m&:&z7^p
mergeSort(data,temp,0,data.length-1); zj1~[$
(
} mG jB{Q+
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private void mergeSort(int[] data,int[] temp,int l,int r){ :V(LBH0
int mid=(l+r)/2; 0O9b
7F
if(l==r) return ; ~5f&<,p!
mergeSort(data,temp,l,mid); \8 `7E1d
mergeSort(data,temp,mid+1,r); QB*,+u4
for(int i=l;i<=r;i++){ i6WH^IQ M
temp=data; nm-
} 2.D2
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int i1=l; wq$$.
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int i2=mid+1; tk&AZb,sP
for(int cur=l;cur<=r;cur++){ ;xZ+1zmL0
if(i1==mid+1) _MBhwNBxZ
data[cur]=temp[i2++]; hOY@vm&
else if(i2>r) >}+{;d
data[cur]=temp[i1++]; +e>SK!kB7
else if(temp[i1] data[cur]=temp[i1++]; #ibwD:{
else UK
':%LeL
data[cur]=temp[i2++]; ]n!V
} #\0m(v
} T/_u;My;
D&G6^ME
} i]v3CY|3AI
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改进后的归并排序: YThVG0I =
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package org.rut.util.algorithm.support; ,/\`Rc^n
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import org.rut.util.algorithm.SortUtil; o,*m,Qc
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/** ;@wa\H[3v2
* @author treeroot g:o/^_
* @since 2006-2-2 uNN/o}Qx
* @version 1.0 ~}.C*;J
*/ x?Abk
public class ImprovedMergeSort implements SortUtil.Sort { y, l[v39
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private static final int THRESHOLD = 10; >Xn,jMUW
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/* I-]G{
* (non-Javadoc) ]9oj,k
* -9b=-K.y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1bFZyD"
*/ \p4*Q}t
public void sort(int[] data) { cNWmaCLN$
int[] temp=new int[data.length]; $*C
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mergeSort(data,temp,0,data.length-1); d@Z DIy
} h4hAzFQ.s
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private void mergeSort(int[] data, int[] temp, int l, int r) { :zHSy&i`
int i, j, k; q" VmuQ
int mid = (l + r) / 2; yKML{N1D
if (l == r) o?baiOkH
return; .>"xp6
if ((mid - l) >= THRESHOLD) '12m4quO
mergeSort(data, temp, l, mid); qs]W2{-4~
else y\FQt];z)
insertSort(data, l, mid - l + 1); REh"/d
if ((r - mid) > THRESHOLD) 7X$CJ%6b
mergeSort(data, temp, mid + 1, r); iC#a+G*N_M
else '.v;/[0
insertSort(data, mid + 1, r - mid); -wn-PB@r
+~5Lo'^
for (i = l; i <= mid; i++) { o?a2wY^_
temp = data; L4 po1
} /@`"&@W'
for (j = 1; j <= r - mid; j++) { Ua}R3^_)a
temp[r - j + 1] = data[j + mid]; x6/u+Urn
} Fp.eucRxP
int a = temp[l]; 7ys' [G|}r
int b = temp[r]; fbApE
for (i = l, j = r, k = l; k <= r; k++) { YEv\!%B
if (a < b) { If&))$7u
data[k] = temp[i++]; h% -=8l,
a = temp; JI@iT6.%IX
} else { awzlLI<2p
data[k] = temp[j--]; *d8
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b = temp[j]; C. .| O
} ]xS%Er
} ie1~QQ
} WI1YP0V
WL+EpNKSf
/** ;6V~yB
* @param data C6>_wl]
* @param l Y1Ql_
* @param i r*{.|>me
*/ \#[DZOI~
private void insertSort(int[] data, int start, int len) { [vr"FLM|9
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);
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} ! Vl)aL
}
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} (6fD5XtS
} -c>3|bo
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堆排序: PcsYy]Q/
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package org.rut.util.algorithm.support; M&iXdw&
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import org.rut.util.algorithm.SortUtil; O]IAIM
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/** @.L#u#
* @author treeroot ^C
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* @since 2006-2-2 |21VOPBS
* @version 1.0 $}4ao2
*/ D?BegF
public class HeapSort implements SortUtil.Sort{ r;@0F
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/* (non-Javadoc) /%g@ ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~vYFQKrb
*/ "C}<umJ'
public void sort(int[] data) { Lum=5zDo
MaxHeap h=new MaxHeap(); D{t_65c-
h.init(data); 13@emb
for(int i=0;i h.remove(); :"y2u
System.arraycopy(h.queue,1,data,0,data.length); d\-*Fmp(S
} bM'F8Fi
+184|nJ<2
private static class MaxHeap{ /Igz[P^\9
h8WM4
PK
void init(int[] data){ X!V#:2JY
this.queue=new int[data.length+1]; GYtgw9 "Y
for(int i=0;i queue[++size]=data; )-I/ej^
fixUp(size); ]R~hzo
} GN(,` y
} +/_XSo
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private int size=0; }se3y
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private int[] queue; wKJ|;o4;L
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public int get() { ByE@4+9
return queue[1]; [$} \Gv
} (e;/Smol
-V2f.QE%
public void remove() { bRggt6$z
SortUtil.swap(queue,1,size--); `\##M=
fixDown(1); {*;K>%r\o
} P*[wB_^&UP
file://fixdown E;H9]*x/
private void fixDown(int k) { pa^_D~
int j; H{*rV>%
while ((j = k << 1) <= size) { LT)I
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if (j < size %26amp;%26amp; queue[j] j++; VOYQ<tg
if (queue[k]>queue[j]) file://不用交换 ydVDjE
Y
break; Kf?:dF
SortUtil.swap(queue,j,k); ;P<h9(
k = j; UOj*Gt&
} sMLXn]m
} jc3Q3Th/zn
private void fixUp(int k) { k"=*'
while (k > 1) { h143HXBi1+
int j = k >> 1; O:'qwJ#~
if (queue[j]>queue[k]) rPr]f;
break; p/eaO{6 6
SortUtil.swap(queue,j,k); ZG +FX:v
k = j; AP`1hz4].-
} ~[F7M{LS
} K20Hh7cVJ
h}tC+_"D
} {ZdF6~+H(!
W NeBthq6
} \(`2 @
Y9-F\t=~
SortUtil: e1b?TF@lz
Q e/XEW
package org.rut.util.algorithm; }T PyHq"
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import org.rut.util.algorithm.support.BubbleSort; B&7:=t,m(
import org.rut.util.algorithm.support.HeapSort; !Mgo~h"]#
import org.rut.util.algorithm.support.ImprovedMergeSort; eU)QoVt
import org.rut.util.algorithm.support.ImprovedQuickSort; G]$EIf'
import org.rut.util.algorithm.support.InsertSort; 6pb~+=3n
import org.rut.util.algorithm.support.MergeSort; R@uA4Al
import org.rut.util.algorithm.support.QuickSort; \)6AzCq
import org.rut.util.algorithm.support.SelectionSort; <l!:#u
import org.rut.util.algorithm.support.ShellSort; tZx}/&m-
amExZ/
/** s;l"'6:_
* @author treeroot &E6V'*<93
* @since 2006-2-2 0)zJG |
* @version 1.0 <H#0pFB
*/ uF[*@N
public class SortUtil { _KtV`bF
public final static int INSERT = 1; YvuE:ia
public final static int BUBBLE = 2; V60"j(
public final static int SELECTION = 3; [zq2h3r
public final static int SHELL = 4; a;Pn.@NVq
public final static int QUICK = 5; '.N}oL<gP
public final static int IMPROVED_QUICK = 6; CY.92I@S
public final static int MERGE = 7; S~H>MtX(<
public final static int IMPROVED_MERGE = 8; EUh_`R
public final static int HEAP = 9; __+8wC
<_kA+&T
public static void sort(int[] data) { MSBrI3MqQ
sort(data, IMPROVED_QUICK); mJ(ElDG
} 3.P7GbN
private static String[] name={ Xf"<
>M
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O8>&J-+2
}; raSga'uT;
2yFT` 5+H4
private static Sort[] impl=new Sort[]{ Yv)c\hm(7j
new InsertSort(), -{C Gn5]_#
new BubbleSort(), [n&ES\o#(
new SelectionSort(), 2wPc
yD
new ShellSort(), \M|:EG%
new QuickSort(), _iDVd2X"H
new ImprovedQuickSort(), R
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new MergeSort(), (GGosXU-v
new ImprovedMergeSort(), *_J{_7pwe
new HeapSort() _<F;&(o
}; N^wHO<IO1
=j~:u.hc'
public static String toString(int algorithm){ j+dQI_']x
return name[algorithm-1]; ;;
{K##^l
} N(yd<Mw
vf#d
public static void sort(int[] data, int algorithm) { \et2aX !
impl[algorithm-1].sort(data); 0WKS
} RL\?i~'KH
<}'=@a
public static interface Sort { L<iRqayn
public void sort(int[] data); {_L l'S
} X@:Y. /
?*xH
HI/
public static void swap(int[] data, int i, int j) { ~:0w%
int temp = data; oP4+:r)LKD
data = data[j]; <s\ZqL$f
data[j] = temp; 3` oOoKX
} >!lpI5'Z&
} E`@Z9k1 `