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。 I^0t2[M
插入排序: mb\t/p
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package org.rut.util.algorithm.support; ]
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import org.rut.util.algorithm.SortUtil; (ppoW
/** a>Re^GT+z
* @author treeroot b&t[S[P.V
* @since 2006-2-2 2>y:N.
* @version 1.0 @5Qoi~o
*/ F,Fo}YQX
public class InsertSort implements SortUtil.Sort{ V2`;4d X*2
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/* (non-Javadoc) P1d,8~;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 03E3cp"
*/ Sb<\-O14"
public void sort(int[] data) { u(vw|nj`
int temp; _`aR_%Gx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O3_B<Em
} co]Gmg6p
} Va9q`XbyO
} V<0$xV1b|=
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} i:Mc(mW
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冒泡排序: ep?:;98|t
S %+R#A1
package org.rut.util.algorithm.support; t"YIq/08
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import org.rut.util.algorithm.SortUtil; {!K;`I[]v
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/** r@$B'CsLj
* @author treeroot 8tZ};="F
* @since 2006-2-2 46ChMTt
* @version 1.0 KM5 JZZP
*/ ec'tFL#u{
public class BubbleSort implements SortUtil.Sort{ <d!6[,W;
aJ-}
/* (non-Javadoc) M.k|bh8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wznn #j
*/ =HPu{K$
public void sort(int[] data) { a/e\vwHLv
int temp; ;eR{tH /4
for(int i=0;i for(int j=data.length-1;j>i;j--){ (5(fd.m+_
if(data[j] SortUtil.swap(data,j,j-1); s`Vf+l0
} AF[>fMI
} qBiyGlu4
} x^2 W?<
} cdp{W
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} qhxC 5f4Z
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选择排序: BGpk&.J
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package org.rut.util.algorithm.support; @U7Dunu*f
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import org.rut.util.algorithm.SortUtil; z[biK|YL
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/** Y UZKle
* @author treeroot Qdm(q:w
* @since 2006-2-2 G1r V<,#m
* @version 1.0 x vJ^@w'
*/ H
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public class SelectionSort implements SortUtil.Sort { >W~=]&7{s4
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/* {e6KJ@H6
* (non-Javadoc) &G=0
* =BW9/fG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GWh|FEqUbf
*/ 9TW8o}k`
public void sort(int[] data) { a^/K?lAB8
int temp; TMtI^mkB:
for (int i = 0; i < data.length; i++) { LH.%\TMN$
int lowIndex = i; i0i`k^bA
for (int j = data.length - 1; j > i; j--) { w=$'Lt!
if (data[j] < data[lowIndex]) { JP_kQ
lowIndex = j; q-uLA&4
} #-dK0<:
} .r*#OUC
SortUtil.swap(data,i,lowIndex); 500>
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} @:IL/o*
} |Ib.)
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Shell排序: +<B|qcT!
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package org.rut.util.algorithm.support; lG
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import org.rut.util.algorithm.SortUtil; 'M
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/** 8iOO1I?+
* @author treeroot VB's
* @since 2006-2-2 y\z*p&I
* @version 1.0 ( w5f(4
*/ t@r#b67WJe
public class ShellSort implements SortUtil.Sort{ ;6zPiaDQ
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/* (non-Javadoc) A_]D~HH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $BaK'7=3*
*/ g X8**g'
public void sort(int[] data) { m/KjJ"s,
for(int i=data.length/2;i>2;i/=2){ @%%bRY
for(int j=0;j insertSort(data,j,i); e+x*psQ
} GGp{b>E+
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} cPm~`
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insertSort(data,0,1); CJ:uYXJJ:z
} /xF 9:r
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/** 0+p
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* @param data CBIT`k.+
* @param j -@#Pc#
* @param i !&\meS{
*/ Slo9#26
private void insertSort(int[] data, int start, int inc) { )L|C'dJ<k`
int temp; 4^`PiRGt
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +{'lZa
} v/ eB,p
} Jtext%"eNg
} RpU Lm1b
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} DYkC'+TEX
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快速排序: y3Y2QC(
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package org.rut.util.algorithm.support; _J` |<}?t;
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import org.rut.util.algorithm.SortUtil; #*+;B93)
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/** ]u~Os<
* @author treeroot W.z$a.<(rF
* @since 2006-2-2 fHLFeSfH
* @version 1.0 aQxe)
*/ A}gYcc85Z
public class QuickSort implements SortUtil.Sort{ AVU7WU{
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/* (non-Javadoc) OX`?<@6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X1O65DMr`g
*/ f>p; siR)
public void sort(int[] data) { Q})t<l+L
quickSort(data,0,data.length-1); 3g^IXm:K$
} }WA<=9e
private void quickSort(int[] data,int i,int j){ M\9IlV?'
int pivotIndex=(i+j)/2; w<btv]X1
file://swap MkkA{p
SortUtil.swap(data,pivotIndex,j); %bEGv:88s
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int k=partition(data,i-1,j,data[j]); *m iONc
SortUtil.swap(data,k,j); =z+-l5Gu"
if((k-i)>1) quickSort(data,i,k-1); JN-D/s
if((j-k)>1) quickSort(data,k+1,j); N&x@_t""
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} #j\*Lc"Ur:
/** $ #TID=
* @param data
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* @param i O.]_Ry\OXA
* @param j 3&O% &
* @return "sdcP8])d
*/ <.;@ksCPW{
private int partition(int[] data, int l, int r,int pivot) { vM5k4%D
do{ (H'_KPK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); GOUY_&}tL
SortUtil.swap(data,l,r); =;kRk.qzy
} i:MlD5 F
while(l SortUtil.swap(data,l,r); lkI8{
return l; [^h/(a`
} oZ?IR#^
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} D7%^Ly
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改进后的快速排序: I|GV
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package org.rut.util.algorithm.support; Pw0{.W~r
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import org.rut.util.algorithm.SortUtil; q]2}UuM|U
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/** Uyz;U34 oI
* @author treeroot R~U2/6V
* @since 2006-2-2 ]|H]9mys98
* @version 1.0 &z7N\n
*/ C~3@M<X
public class ImprovedQuickSort implements SortUtil.Sort { \Mobq
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private static int MAX_STACK_SIZE=4096; aa%Yk"V@
private static int THRESHOLD=10; T3=-UYx]
/* (non-Javadoc) :_W0Af09
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gvow\9{|C
*/ XHU<4l:kl
public void sort(int[] data) { R^n*
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int[] stack=new int[MAX_STACK_SIZE]; 8#[%?}tK
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int top=-1; 8 /:X&
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int pivot; iKP\/LR<n
int pivotIndex,l,r; @h ,h=X
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stack[++top]=0; 'XC&BWJ
stack[++top]=data.length-1; nPQZI6>
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while(top>0){ '[7C~r{%
int j=stack[top--]; l4R<`b\Jt
int i=stack[top--]; k1~nd=p
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pivotIndex=(i+j)/2; ?yK%]1O
pivot=data[pivotIndex]; p,_6jdz
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SortUtil.swap(data,pivotIndex,j); \@iOnRuHn9
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file://partition j]cXLY
l=i-1; A8A:@-e8A
r=j;
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do{ H| eD/6K
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N]O{T_5-0
SortUtil.swap(data,l,r); ,_wm,
} E@\d<c.
while(l SortUtil.swap(data,l,r); h^.tomg8
SortUtil.swap(data,l,j); //`cwnjp
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if((l-i)>THRESHOLD){
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stack[++top]=i; $?CBX27AV
stack[++top]=l-1; qr<-eJf
} UH1S_:6
if((j-l)>THRESHOLD){ &deZ
stack[++top]=l+1; U{U:8==
stack[++top]=j; RGx]DP$5G
} ,6%hu|Y*
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} O?4vC5x
file://new InsertSort().sort(data); [F BCz>
insertSort(data); =+SVzK,+3
} YI? C-,
/** Nv*E .|G
* @param data S4aHce5PXA
*/ a
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private void insertSort(int[] data) { 2f}K#i8
int temp; )Yy#`t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,_5YaX:<4
} ZmYSi$B
} e$FAhwpon
} n'0$>Q
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} Tvksf!ba
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归并排序: '!r+Tz
Jfixm=.6
package org.rut.util.algorithm.support; }
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import org.rut.util.algorithm.SortUtil; +cE tm
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/** -KU)7V
* @author treeroot 3_jCsX
* @since 2006-2-2 U`8^N.Snrp
* @version 1.0 G2[IO $
*/ SCt=OdP=
public class MergeSort implements SortUtil.Sort{ }?Yr>ZRi
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/* (non-Javadoc) #?b^B~ #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '%]@a7w
*/ C&CsI] @g
public void sort(int[] data) { |)72E[lL
int[] temp=new int[data.length]; 7gdU9c/q,
mergeSort(data,temp,0,data.length-1); KWn1 %oGJ
} &xiDG=I#
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private void mergeSort(int[] data,int[] temp,int l,int r){ LGo@F;!n
int mid=(l+r)/2; +~i+k~{`H
if(l==r) return ; 0:B^
mergeSort(data,temp,l,mid); mrLx]og,
mergeSort(data,temp,mid+1,r); 057G;u/
for(int i=l;i<=r;i++){
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temp=data; P9tQS"Rs
} SJ WP8+
int i1=l; N|Cy!E=d
int i2=mid+1; L@k;L
for(int cur=l;cur<=r;cur++){ *|,ykb>
if(i1==mid+1) w;SH>Ax:
data[cur]=temp[i2++]; |q.:hWYFpM
else if(i2>r) 2dd:5L,
data[cur]=temp[i1++]; Jn
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else if(temp[i1] data[cur]=temp[i1++]; 7)(`
else e
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data[cur]=temp[i2++]; :?:j$
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}
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} gt t$O
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} _AFt6\
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改进后的归并排序: ";S*[d.2tA
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package org.rut.util.algorithm.support; b#I*~
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import org.rut.util.algorithm.SortUtil; Dy{`">a
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/** o"ah\"#el
* @author treeroot 6nWx>R<
* @since 2006-2-2 #G ,
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* @version 1.0 Pdm6u73
*/ >K|G LP
public class ImprovedMergeSort implements SortUtil.Sort { `2(R}zUHN
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private static final int THRESHOLD = 10; 9M7(_E;)B
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/*
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* (non-Javadoc) M}oFn}-T9a
* gM5p1?E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X,Q=n2X?3
*/ tId !C
public void sort(int[] data) { `TlUJ]d)
int[] temp=new int[data.length]; 0iZ9a/v
mergeSort(data,temp,0,data.length-1); "O*W]e
} ATmqq)\s
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private void mergeSort(int[] data, int[] temp, int l, int r) { if!`Qid
int i, j, k; ~j&:)a'^
int mid = (l + r) / 2; k-ex<el)#
if (l == r) 6[2?m*BsN
return; {|J2clL
if ((mid - l) >= THRESHOLD) }
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mergeSort(data, temp, l, mid); :%b2;&A[
else LI|HET_
insertSort(data, l, mid - l + 1); ~!d)J
if ((r - mid) > THRESHOLD) ,S0~:c:)
mergeSort(data, temp, mid + 1, r); Mm7n?kb6
else eZod}~J8
insertSort(data, mid + 1, r - mid); ocuVDC
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for (i = l; i <= mid; i++) { PUZXmnB
temp = data; 4d._Hd='
} 6[|<
for (j = 1; j <= r - mid; j++) { ,f0g|5yDf
temp[r - j + 1] = data[j + mid]; ;{q) |GRF
} ?!
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int a = temp[l]; E e\-q
int b = temp[r]; )4_6\VaM
for (i = l, j = r, k = l; k <= r; k++) { .yfqS|(
if (a < b) { <&0*5|rR
data[k] = temp[i++]; Q%VR@[`\
a = temp; P "_}F
} else { m3xj5]#^$
data[k] = temp[j--]; ?M-8Fp3 +
b = temp[j]; ^\kHEM|5v
} (`y|AOs
} y3[)zv
} b
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*;yMD-=
/** o4 g
* @param data {ZM2WFpE
* @param l zu*G4?]~h
* @param i 7RFkHME
*/ IS
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private void insertSort(int[] data, int start, int len) { p>tdJjnt
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;q&D,4r]
} $F()`L{Tj
} @gjdyz
} @bCiaBdi
} 0#/
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堆排序: VrE5^\k<a
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package org.rut.util.algorithm.support; Hh;6B!zb+
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import org.rut.util.algorithm.SortUtil; :;WDPRx
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/** 5YH
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* @author treeroot Ml/p{ *p
* @since 2006-2-2 X|1YGZJ
* @version 1.0 !K~$-jlT
*/ yj+b/9My
public class HeapSort implements SortUtil.Sort{ sfPN\^k2
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/* (non-Javadoc) :QL p`s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &FF. Ddt{
*/ >@Vr'kg+V
public void sort(int[] data) { [=F
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MaxHeap h=new MaxHeap(); _";pk _
h.init(data); xy3%z
for(int i=0;i h.remove(); b{>dOI*.}
System.arraycopy(h.queue,1,data,0,data.length); 7<o;3gR7Kj
} fO(S+}
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private static class MaxHeap{ KmOa^vY1.T
xLK0~|_#!
void init(int[] data){ 'R'a/ZR`B7
this.queue=new int[data.length+1]; 9:w,@Phe
for(int i=0;i queue[++size]=data; TC{Qu;`H+U
fixUp(size); l4reG:uYG
} .%Q Ea_\
} ,4W((OQ^
$[CA#AXE
private int size=0; 5@%-=87S
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private int[] queue; /(pChY>
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public int get() { yZ0ZP
return queue[1]; ~RAH -]
} 2I7`
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public void remove() { NT/B4'_@
SortUtil.swap(queue,1,size--); iX6jvnJ:/
fixDown(1); Qb{5*>
} 9,eR=M]+:
file://fixdown O9)}:++T
private void fixDown(int k) { FNEmGz/4
int j; %{abRBny
while ((j = k << 1) <= size) { 'k Z1&_{
if (j < size %26amp;%26amp; queue[j] j++; ah9',( (!
if (queue[k]>queue[j]) file://不用交换 9G/2^PI
break; !z
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SortUtil.swap(queue,j,k); wu&7#![,
k = j; *v/*_6f*
} :]QxT8B
} oa !P]r
private void fixUp(int k) { G@!9)v]9
while (k > 1) { iRHQRdij
int j = k >> 1; U/o}{,$A
if (queue[j]>queue[k]) %pQ o%<d
break; 2<@!m@
SortUtil.swap(queue,j,k); Rj`Y X0?+
k = j; S`w)b'B!M
} !PIdw~YC
} <j3HT"^[D
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} hO@3-SRa,k
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} KZfRiCZ
0*x?
SortUtil: 7b2<,
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Mu%,@?zM^/
package org.rut.util.algorithm; Fsj[J E
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import org.rut.util.algorithm.support.BubbleSort; x's-UO"^
import org.rut.util.algorithm.support.HeapSort; UdJV;T'rm
import org.rut.util.algorithm.support.ImprovedMergeSort; |h/2'zd^-
import org.rut.util.algorithm.support.ImprovedQuickSort; ,0~TvJS
import org.rut.util.algorithm.support.InsertSort; SH|$Dg
import org.rut.util.algorithm.support.MergeSort; /z:K#
import org.rut.util.algorithm.support.QuickSort; kq0m^`
import org.rut.util.algorithm.support.SelectionSort;
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import org.rut.util.algorithm.support.ShellSort; hj,x~^cS
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/** F|Q#KwN
* @author treeroot ^T,cXpx|
* @since 2006-2-2 BG=_i#V
* @version 1.0 c$fM6M
}
*/ P,_E 4y
public class SortUtil { 1hi j4m$b
public final static int INSERT = 1; a"aV&t
public final static int BUBBLE = 2; l:f
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public final static int SELECTION = 3; ?s33x#
public final static int SHELL = 4; gwNkjI=,
public final static int QUICK = 5; pj]<i.p
public final static int IMPROVED_QUICK = 6; 3/FB>w gt
public final static int MERGE = 7; oD\+ 5[x
public final static int IMPROVED_MERGE = 8; @CF4:NNHw
public final static int HEAP = 9; hhhO+D1(
{H2i+"cF
public static void sort(int[] data) { #mYxO
sort(data, IMPROVED_QUICK); =YIQ
_,{u
} Hp!F?J7sx
private static String[] name={ P7-3Vf_L
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IhLfuyFWu
}; I r~X#$Upc
n]Y _C^
private static Sort[] impl=new Sort[]{ }DaYO\:yK*
new InsertSort(), kM`#U
*j
new BubbleSort(), yk2j&}M
new SelectionSort(), `l"~"x^Rr
new ShellSort(), {eUfwPAa3
new QuickSort(), 6<Z9p@6
new ImprovedQuickSort(), e.V){}{V
new MergeSort(), |e&Kg~~C
new ImprovedMergeSort(), aK'r=NU
new HeapSort() ;zDc0qpw
}; to7)gOX(
|=s3a5sl
public static String toString(int algorithm){ KK</5Aw9p
return name[algorithm-1]; MzD0F#Y
} $ 1U%E
@4$E.q<0
public static void sort(int[] data, int algorithm) { za7wNe(s
impl[algorithm-1].sort(data); _wCSL.
} e$=|-Jz
J?'!8,RX
public static interface Sort { X)m2{@v D
public void sort(int[] data); {'!~j!1'j
} h#
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ty> O}9%
public static void swap(int[] data, int i, int j) { YPl{5=
int temp = data; :cTi$n
data = data[j]; qv\yQ&pj
data[j] = temp; v*3:8Y,
} wn`budH?c8
} O5
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