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。 <m0=bm{j
插入排序: U5OFw+J
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package org.rut.util.algorithm.support; F'"-aB ~
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import org.rut.util.algorithm.SortUtil; 49HP2E
/** ysCK_
* @author treeroot VrWQ] L
* @since 2006-2-2 ^y%8_r&
* @version 1.0 8kC$Z )
*/ Q`{Vs:8X
public class InsertSort implements SortUtil.Sort{ [e_<UF@A*
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/* (non-Javadoc) tvBLfqIr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =*{7G*tS
*/ C+>mehDC_G
public void sort(int[] data) { s8'!1rHd
int temp; R;fe v
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eC WF0a
} /q8B | (U
} q(csZ\e=
} RCi8{~rIvS
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} <FAbImE}
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冒泡排序: 9Zf
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package org.rut.util.algorithm.support; ]1eZ<le`6
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import org.rut.util.algorithm.SortUtil; #DARZh U)
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/** '+ mI
* @author treeroot atW^^4:
* @since 2006-2-2 xAO\' #m
* @version 1.0 df {\O*6
*/ HR?bnkv|id
public class BubbleSort implements SortUtil.Sort{ {U@"]{3Qx
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/* (non-Javadoc) l>L?T#v!_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BG)zkn$
*/ wWSw0 H/
public void sort(int[] data) { a8v\H8@X
int temp; >rSCf=
for(int i=0;i for(int j=data.length-1;j>i;j--){ C1(RgY|
if(data[j] SortUtil.swap(data,j,j-1); bxO[y<|XL
} :'xZF2
} I2pE}6q
} >o%X;U
3
} &y7=tEV
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} P)XR9&o':
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选择排序: #xq3)B
2}bXX'Y
package org.rut.util.algorithm.support; w`r%_o-I
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import org.rut.util.algorithm.SortUtil; P[$idRS&
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/** Z\]LG4N?
* @author treeroot 6xY6EC
* @since 2006-2-2 }eI9me@Aa
* @version 1.0 @P>>:002/
*/ 8G2QI4
public class SelectionSort implements SortUtil.Sort { lxbC 7?O
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/* kGC*\?<LmR
* (non-Javadoc) >wL!`:c'"
* B.smQt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R4'>5.M
*/ k {vd1,HZ
public void sort(int[] data) { H|,d`@U
int temp; Z-pZyDz
for (int i = 0; i < data.length; i++) { mey -Bn
int lowIndex = i; YXmy-o>
for (int j = data.length - 1; j > i; j--) { 1(*+_TvZ
if (data[j] < data[lowIndex]) { x^i97dZS^"
lowIndex = j; 1HqN`])l/j
} M?;YpaSe+
} 90,UhNz9D
SortUtil.swap(data,i,lowIndex); ;49sou
} h,-i\8gq
} #Ye0*`
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} (CtRU
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Shell排序: 6
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package org.rut.util.algorithm.support; 3RI6+Cgmn
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import org.rut.util.algorithm.SortUtil; @3 +
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/**
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* @author treeroot QNv5CQ&
* @since 2006-2-2 #6mw CA|
* @version 1.0
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*/ n=0^8QQ
public class ShellSort implements SortUtil.Sort{ [9}<N2,9z
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/* (non-Javadoc) ,%zE>^~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {w,<igh
*/ ACFEM9 [=
public void sort(int[] data) { N6T
for(int i=data.length/2;i>2;i/=2){ 0LIXkF3^1
for(int j=0;j insertSort(data,j,i); |oX9SU l
} BPKrRex
} gx eu2HG
insertSort(data,0,1); n$h+_xN
} \f VX<L
^JY:$)4["
/** /xr75|-8
* @param data EG_P^<z
* @param j KV'3\`v@LY
* @param i (9'q/qgTO
*/ 7TU77
private void insertSort(int[] data, int start, int inc) { { i4`-w
int temp; !c0x^,iE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .<YfnW5/K
} sYSq >M
} gdh|X[d
} Cv&>:k0V
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} :RYYjmG5;
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快速排序: y1Wb/ d
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package org.rut.util.algorithm.support; rJtk4hOF
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import org.rut.util.algorithm.SortUtil; F4~O-g.<
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/** JE@3 UXg
* @author treeroot LJ 9#!r@H
* @since 2006-2-2 5nmE*(
* @version 1.0 ;2MdvHhz1
*/ 8{7'w|/;.{
public class QuickSort implements SortUtil.Sort{ ]/%CTD(O
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/* (non-Javadoc) m1tc="j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hu}uc&N)iE
*/ &t'P>6)
public void sort(int[] data) { ymR AQVv
quickSort(data,0,data.length-1); )U0I|dx
} 0&Iu+hv
private void quickSort(int[] data,int i,int j){ ~X'hRNFx~
int pivotIndex=(i+j)/2; X)c0y3hk
file://swap .\)ek[?
SortUtil.swap(data,pivotIndex,j); NID2$ p
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int k=partition(data,i-1,j,data[j]); {n<1uh9~$8
SortUtil.swap(data,k,j); MRK3Cey} %
if((k-i)>1) quickSort(data,i,k-1); OKj\>3
if((j-k)>1) quickSort(data,k+1,j); 62[_u]<Yub
6pZ/C<Y|W
} >{rD3X"d
/** r-[YJzf@P
* @param data B7%m7GM
* @param i Z^K WYe'w
* @param j YPw=iF]
* @return nA=E|$1
*/ v|jwz.jM
private int partition(int[] data, int l, int r,int pivot) { 3XUsw1,[
do{ 9IacZ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N]|)O]/[
SortUtil.swap(data,l,r); lZ`@ }^&
} 7L]Y.7>
while(l SortUtil.swap(data,l,r); ^5FwYXAxi
return l; :/fT8KCwo
} Ro2!$[P
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} k4"O}jQO
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改进后的快速排序: F)S?>P&
T\7t#Z
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package org.rut.util.algorithm.support; nv:VX{%
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import org.rut.util.algorithm.SortUtil; {Z~ze` N/
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/** RNcnE1=
* @author treeroot f4|ir3oy
* @since 2006-2-2 mP_c-qD
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* @version 1.0 S3c%</'
*/ /AUX7
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public class ImprovedQuickSort implements SortUtil.Sort { ? 8S~R
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private static int MAX_STACK_SIZE=4096; id1gK(F8H
private static int THRESHOLD=10; 'puiahA
/* (non-Javadoc) .bRDz:?j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bHzH0v]:
*/ CraD
public void sort(int[] data) { v0pev;C
int[] stack=new int[MAX_STACK_SIZE]; 5&134!hC
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int top=-1; ovvg"/>L
int pivot; eTY(~J#'
int pivotIndex,l,r; !Bhs8eGr3
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stack[++top]=0; In#m~nE[M
stack[++top]=data.length-1; [*Vo`WgbD
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while(top>0){ %
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int j=stack[top--]; d{]2Q9g
int i=stack[top--]; ?T'a{~]R
ey
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pivotIndex=(i+j)/2; /@LUD=
pivot=data[pivotIndex]; =UZQ` {
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SortUtil.swap(data,pivotIndex,j); [|L~" BB
(:7Z-V2(
file://partition 3lefB
A7
l=i-1; vUJQ<D
r=j; kAAD&t;w
do{ kY~o3p<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6CNxb
SortUtil.swap(data,l,r); IvB)d}p
} 5VE9DTE
while(l SortUtil.swap(data,l,r); )Tf,G[z&ge
SortUtil.swap(data,l,j); 7KV0g1GQ
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if((l-i)>THRESHOLD){ mX@!O[f%9e
stack[++top]=i; 0NyM|
stack[++top]=l-1; hoZM;wC
} l}9E0^AS
if((j-l)>THRESHOLD){ Yj*!t1qm
stack[++top]=l+1; BPypjS0?8
stack[++top]=j; U)qG]RI
} p9*Ak
U&]
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} EN@<z;
file://new InsertSort().sort(data); wv&%09U
insertSort(data); 'oZdMl&
} [d6TwKv
/** *orP{p-U
* @param data W7q!F
*/ ""_%u'7t5I
private void insertSort(int[] data) { Z
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int temp; &MP +
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T^
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} 7[YulC-pH
} nztnU9OG
} UiN6-{v<2
91}kBj
} h@D!/PS
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归并排序: ?w>-ya
`:fh$V5J>
package org.rut.util.algorithm.support; N=TDywRI
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import org.rut.util.algorithm.SortUtil; QfI@=Kbg%#
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/** &h;J_Ps
* @author treeroot Kbqx)E$iL
* @since 2006-2-2 D+CP?} /
* @version 1.0 je5GZFQw
*/ dC8,
public class MergeSort implements SortUtil.Sort{ ,<]~/5-f
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/* (non-Javadoc) A=\:b^\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CdTE~O<)
*/ }+GIrEDId
public void sort(int[] data) { n]v,cfn/=<
int[] temp=new int[data.length]; I_iXu;UX
mergeSort(data,temp,0,data.length-1); xC -&<s
} unAu8k^
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private void mergeSort(int[] data,int[] temp,int l,int r){ vQ1#Zgy
int mid=(l+r)/2; :lp
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if(l==r) return ; V})b.\"F
mergeSort(data,temp,l,mid); `fq# W#Pu
mergeSort(data,temp,mid+1,r); '\/|K
for(int i=l;i<=r;i++){ YG#.L}X@C
temp=data; 'zfj`aqc
} a>BPK"K2
int i1=l; rFG_CC2
int i2=mid+1; QK(w2`
for(int cur=l;cur<=r;cur++){ xcE<|0N
:
if(i1==mid+1) @wx
data[cur]=temp[i2++]; Q<fDtf}
else if(i2>r) 05Y4=7,!
data[cur]=temp[i1++]; |&AZ95v
else if(temp[i1] data[cur]=temp[i1++]; 9"b =W@
else ^y<8&ZFH
data[cur]=temp[i2++]; 6"u"B-cz
} ,?`Zrxe[
} k/2TvEV3=
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} 0E/,l``p
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改进后的归并排序: %p8#pt\$7
w ;xbQZ|+
package org.rut.util.algorithm.support; m53~Ysq<
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import org.rut.util.algorithm.SortUtil; _REAzxeS
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/** Z:Y_{YAD
* @author treeroot }MW+K&sIh
* @since 2006-2-2 7s}Eq~
* @version 1.0 GfL:0
*/ G?5Vj_n
public class ImprovedMergeSort implements SortUtil.Sort { NRDXWscb
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private static final int THRESHOLD = 10; J6RzN'j
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/* 3&KRG}5
* (non-Javadoc) Gq0`VHAn
* ]@hN&W(+ x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b+e9Pi*\
*/ USJk
*
public void sort(int[] data) { X@H/"B%u2
int[] temp=new int[data.length]; `tEW.s%Y(6
mergeSort(data,temp,0,data.length-1); 4O:y
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} F8d:7`lO@/
JNxrs~}
private void mergeSort(int[] data, int[] temp, int l, int r) { r Zg(%6@
int i, j, k; V[ 'lB.&t
int mid = (l + r) / 2; +CXtTasP
if (l == r) n+SHkrW
return; pRGag~h|E
if ((mid - l) >= THRESHOLD) sz+%4T
mergeSort(data, temp, l, mid); ANq3r(
else .r\|9 *j<
insertSort(data, l, mid - l + 1); /xw}]Fa5
if ((r - mid) > THRESHOLD)
G:i>MJbxT
mergeSort(data, temp, mid + 1, r); nr- 32u
else A Y_GD ^
insertSort(data, mid + 1, r - mid); /<T3^/ '
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for (i = l; i <= mid; i++) { ';KWHk8C
temp = data; 84A:Rd'k3)
} 't3&,:Y
for (j = 1; j <= r - mid; j++) { I T?~`vi
temp[r - j + 1] = data[j + mid]; );=0cnr3
} s|!lw
int a = temp[l]; 1Ms_2
int b = temp[r]; 8M8Odz\3 q
for (i = l, j = r, k = l; k <= r; k++) { *IWWD\U
if (a < b) { 1w'W)x
data[k] = temp[i++]; 6\vaR#
a = temp; W=\45BJ
} else { T$*#q('1"}
data[k] = temp[j--]; 0t2n7Y?N
b = temp[j]; ^50\c$
} V2>+s
y
} U%rq(`;
} H_FT%`iM
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/** UM:]QbaIn
* @param data tX~*.W:
* @param l <7_s'UAL!
* @param i ?ZP@H
_w6}
*/ tui5?\
private void insertSort(int[] data, int start, int len) { Hd57Iw
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); qijQRxS
} ,Rdw]O
} !24PJ\~I
} /Csk"IfuO
} Nj=0bg"Qg5
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堆排序: /B)`pF.n
cyBm,!
package org.rut.util.algorithm.support; lx:.9>
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import org.rut.util.algorithm.SortUtil; Of
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/** k|`Qk!tr
* @author treeroot wWQt
* @since 2006-2-2 Hq#q4Y
* @version 1.0 ]DjnzClx
*/ ~Z' /b|x<3
public class HeapSort implements SortUtil.Sort{ ~-
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5Zn: $?7
/* (non-Javadoc) m{f+!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aRy" _dZ2
*/ ko~D;M:
public void sort(int[] data) { Egmp8:nZl@
MaxHeap h=new MaxHeap(); ^J'O8G$
h.init(data); %#TAz7
for(int i=0;i h.remove(); fLZ mQO
System.arraycopy(h.queue,1,data,0,data.length); & tjL*/
} 7ygz52
^~^=$fz
private static class MaxHeap{ h?p!uQ
Cs2kbG_
void init(int[] data){ lf#5X)V
this.queue=new int[data.length+1]; =
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for(int i=0;i queue[++size]=data; r6vI6|1
fixUp(size); $bl<mG%#9
} -+[~eqRB
} >?[?W|k7V
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private int size=0; iLQ;`/j
l~mj>$
private int[] queue; Zi{vEI ]
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public int get() { i?861Hu
return queue[1]; Ffig0K+`
} }kSP p
ndu$N$7+
public void remove() { b8**M'k
SortUtil.swap(queue,1,size--); 9SXpZ*Sx
fixDown(1); 3hcWR'|
} SB,#y>Zv?
file://fixdown ce:wF#Qs
private void fixDown(int k) { >Se-5QtLcf
int j; (t5vBUj
while ((j = k << 1) <= size) { EQ]>^VE2B
if (j < size %26amp;%26amp; queue[j] j++; j\iNag(
if (queue[k]>queue[j]) file://不用交换 W@RD
bsc
break; Z-3("%_$/
SortUtil.swap(queue,j,k); +V;d^&S
k = j; }=A+W2D
} Hi^Z`97c
} rJ(A O'=
private void fixUp(int k) { Vi#[kn'
while (k > 1) { C!Jy;Z=+u
int j = k >> 1; \+"Jg/)ij
if (queue[j]>queue[k]) 5xQ5)B4k
break; WO$8j2!~#
SortUtil.swap(queue,j,k); 9<.8mW^68
k = j; ?}HZJ@:lB
} G"ixw
} 0-p
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} LI>Bl
h{ZK;(u$
} r,q.RWuII
! LCy:>i!d
SortUtil: ,(f({l[J}
'p)DJUwt
package org.rut.util.algorithm; ~5>TMIDiuR
f|Nkk*9$
import org.rut.util.algorithm.support.BubbleSort; >M^:x-mib
import org.rut.util.algorithm.support.HeapSort; >sQf{uL
import org.rut.util.algorithm.support.ImprovedMergeSort; *ZIX76y<!A
import org.rut.util.algorithm.support.ImprovedQuickSort; iD/+#UTY
import org.rut.util.algorithm.support.InsertSort; |h6,.#n
import org.rut.util.algorithm.support.MergeSort; N{<5)L~Y
import org.rut.util.algorithm.support.QuickSort; !Wj`U$];
import org.rut.util.algorithm.support.SelectionSort; jOZ>^5}
import org.rut.util.algorithm.support.ShellSort; E8 5TCS1
hqV_MeHv'
/** @u`m6``T
* @author treeroot <pM6fI6BD
* @since 2006-2-2 :;\xyy}A
* @version 1.0 Gn4XVzB`O
*/ b>]UNf"-
public class SortUtil { tMXNi\Bj
public final static int INSERT = 1; ?;A\>sP
public final static int BUBBLE = 2; GK1P7Qy?V
public final static int SELECTION = 3; =i6k[ rg
public final static int SHELL = 4; OS1f}<
public final static int QUICK = 5; _+Z5qUmQ
public final static int IMPROVED_QUICK = 6; !wC(
]Y
public final static int MERGE = 7; /T2 v`Li
public final static int IMPROVED_MERGE = 8;
^CD?SP"i
public final static int HEAP = 9; ^S 45!mSb
n8JM
0 U-
public static void sort(int[] data) { aSI%!Vg.
sort(data, IMPROVED_QUICK); i=&]%T6Qk
} ]Bs{9=2
private static String[] name={ FGeKhA 8jT
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aGAr24]y
}; r.c:QY$
;p87^:
private static Sort[] impl=new Sort[]{ x6ayFq=
new InsertSort(), 5Q: %f
new BubbleSort(), ?)Je%H
new SelectionSort(), +pQ3bX
new ShellSort(), A)&CI6(
new QuickSort(), w|NI d,#f
new ImprovedQuickSort(), 0Qy L}y2
new MergeSort(), *;Cpz[N
new ImprovedMergeSort(), @z:E]O}
new HeapSort() L uW""P/
}; Ucz=\dO1
}PM7CZSq
public static String toString(int algorithm){ 40z1Qkmaey
return name[algorithm-1]; yCkX+{ki
} P 6({wx
7~;)N$d\
public static void sort(int[] data, int algorithm) { ]@~%i=.7
impl[algorithm-1].sort(data); U }I#;*F
} "p+JME(
]f}(iD
public static interface Sort { xNa66A-8
public void sort(int[] data); qnqS^K,':
} Z$%!H7w
(W }DMcuSd
public static void swap(int[] data, int i, int j) { /SyAjZ
int temp = data; G<]@nP{P
data = data[j]; f8G<5_!K_
data[j] = temp; -9Ygn_M
} aj=-^iGG
} /1uGsE+[