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。 1HYrJb,d
插入排序: -'btKz*9
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package org.rut.util.algorithm.support; dcUaZfON
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import org.rut.util.algorithm.SortUtil; 7Pspx'u
/** .}gGtH,b3
* @author treeroot +[C(hhk("
* @since 2006-2-2 U{(B)dFTH
* @version 1.0 |fX
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*/ K?0f)@\nx
public class InsertSort implements SortUtil.Sort{ 4'JuK{/ A7
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/* (non-Javadoc) ~bU!4P}4j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \k\ {S2SU
*/ =Tv;?U C
public void sort(int[] data) { KhK:%1po
int temp; nxH+XHv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k2{*WF
} jA@js v
} n$B SO
} 5etbJk
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} %5<uQc9
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冒泡排序: 1fwjW0t
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package org.rut.util.algorithm.support; H4DM,.04
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import org.rut.util.algorithm.SortUtil; J`/ t;xk
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/** o%dKi]
* @author treeroot :l~^un|<2Y
* @since 2006-2-2 S8-3Nv'
* @version 1.0 ;tK%Q~To
*/ [JI>e;l
C:
public class BubbleSort implements SortUtil.Sort{ NN(ZH73
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/* (non-Javadoc) LLp/ SWe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D; xRgHn
*/ <Uj~S
public void sort(int[] data) { *d%"/l^0
int temp; {')L*
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~*aPeJ
if(data[j] SortUtil.swap(data,j,j-1); -3-*T)
} 39
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} N|t!G^rP
} 5P=3.Mk
} OCR`1
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} kw,eTB<;R
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选择排序: kn2s,%\`<p
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package org.rut.util.algorithm.support; xi5G?r
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import org.rut.util.algorithm.SortUtil; / =]h@m-`
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/** c3S}(8g5.
* @author treeroot m/
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* @since 2006-2-2 25e*W>SLw
* @version 1.0 `6bIxb{
*/ MR")
public class SelectionSort implements SortUtil.Sort { M8_f{|!&
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/* >4 n\
* (non-Javadoc) V{#8+
* Ep>} S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rlUo#
*/ +Cf"rN
public void sort(int[] data) { 6}z-X*
int temp; Z5x&P_.x[
for (int i = 0; i < data.length; i++) { ,|5|aVfh
int lowIndex = i; 18*M
for (int j = data.length - 1; j > i; j--) { pl#2JA8
if (data[j] < data[lowIndex]) { /\7E&n:)2
lowIndex = j; > nHaMj
} j
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} * A<vrkHz
SortUtil.swap(data,i,lowIndex); B/Jz$D
} g &E3Wc
} 2Dc2uU@`r
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} {J&[JA\
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Shell排序: JxP&znng
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package org.rut.util.algorithm.support; +aY]?]
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import org.rut.util.algorithm.SortUtil; X}V}%
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/** )~X.x"}8k
* @author treeroot `;~A
* @since 2006-2-2 _^%DfMP3i\
* @version 1.0 T]_]{%z
*/ If>bE!_BO
public class ShellSort implements SortUtil.Sort{ uM"_3je{W2
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/* (non-Javadoc) n0a|GZyO]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*U5o!w1{
*/ e 48N[p
public void sort(int[] data) { mb\"qD5
for(int i=data.length/2;i>2;i/=2){ -){aBMOv3
for(int j=0;j insertSort(data,j,i); V|3^H^\5P
} 1
ORA6
} BjSd\Ul
insertSort(data,0,1); &7J-m4BI
} ]&;K:#J
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/** /R(]hmW
* @param data B?nw([4m
* @param j '< .gKo
* @param i -HU4Ow
*/ 31GqWN`>$
private void insertSort(int[] data, int start, int inc) { +RBX2$kB
int temp; 2MU$OI0|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jct|}U
} gyz_$T@x
} |Vo{ {)
} Y"U t
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} d-cW47
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快速排序: L$z(&%Nx
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package org.rut.util.algorithm.support; G' '9eV$
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import org.rut.util.algorithm.SortUtil; 5AbY 59
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/** ZOBcV,K
* @author treeroot X> T_Xc
* @since 2006-2-2 Sby(?yg
* @version 1.0 0N87G}Xu
*/ JJHO E{%
public class QuickSort implements SortUtil.Sort{ {)n@Rq\=v
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/* (non-Javadoc) /# d^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FnPn#Cv>*
*/ w
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public void sort(int[] data) { JT! Cb$!
quickSort(data,0,data.length-1); Cq -URih
} 6rMXv0)
private void quickSort(int[] data,int i,int j){ YU`}T<;bg
int pivotIndex=(i+j)/2; f>iDqC4
file://swap pkf$%{"e
SortUtil.swap(data,pivotIndex,j); H+
7HD|GE
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int k=partition(data,i-1,j,data[j]); D<gd)
SortUtil.swap(data,k,j); \1O
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if((k-i)>1) quickSort(data,i,k-1); y(wb?86#W5
if((j-k)>1) quickSort(data,k+1,j); 2f0mr?l)N
)Ut K9;@"
} D}`MY\H
/** 7~~suQ{F4
* @param data JM7FVB
* @param i OFxCV`>ce
* @param j \UP=pT@
* @return h0
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*/ 3Rhoul[S
private int partition(int[] data, int l, int r,int pivot) { lA`qB1x
do{ 8,IQ6Or|-2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {9FL}Jrt
SortUtil.swap(data,l,r); ~d3|zlh
} "A*;V
while(l SortUtil.swap(data,l,r); Rk-G|52g
return l; Y!`pF
} !sp`oM
pD!j#suMA
} yIC
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改进后的快速排序: h1)ny1;
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package org.rut.util.algorithm.support; "=ki_1/P
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import org.rut.util.algorithm.SortUtil; W!"Oho'
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/** /#z"c]#
* @author treeroot WL|<xNL
* @since 2006-2-2 kxR!hA8wv4
* @version 1.0 K^",LCJA
*/ KF1Zy;
public class ImprovedQuickSort implements SortUtil.Sort { iaJLIr l
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private static int MAX_STACK_SIZE=4096; 4:Oq(e_(
private static int THRESHOLD=10; @
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/* (non-Javadoc) ;<*%BtD?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HRyhq;C
*/ -Mf-8zw8G
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; 0e07pF/!
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int top=-1; Fn0|v66
int pivot; >oN Wf
int pivotIndex,l,r; })`z6d]3
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stack[++top]=0; Xy. /1`X
stack[++top]=data.length-1; m?gGFxo
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6
while(top>0){ As5-@l`@
int j=stack[top--]; 89j:YfA=v
int i=stack[top--]; $=X>5B
~N/a\%`
pivotIndex=(i+j)/2; UCup {pDp
pivot=data[pivotIndex]; /MMnW$)
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SortUtil.swap(data,pivotIndex,j); ao0^;
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file://partition itE/QB
l=i-1; ~W={"n?=
r=j; P_b!^sq9
do{ *FC|v0D
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L0I|V[
SortUtil.swap(data,l,r); .S1MxZhbP
} ?`xm_udc
while(l SortUtil.swap(data,l,r); $-|$4lrS
SortUtil.swap(data,l,j); , Y,^vzX6
15En$6>
if((l-i)>THRESHOLD){ k
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stack[++top]=i; *_d N9
stack[++top]=l-1; }#;.b'`
} )#1!%aQ
if((j-l)>THRESHOLD){ BJ\81 R
stack[++top]=l+1; ,`OQAJ)>
stack[++top]=j; Vugb;5Vl
} l@1=./L?
4\nGWi{2
} OHW|?hI=[
file://new InsertSort().sort(data); )Z|G6H`c3
insertSort(data); OSLZ7B^
} 1G67#L)USq
/** KK5_;<
* @param data >]%$lSCW\D
*/ eE=2~
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private void insertSort(int[] data) { Rry]6(
int temp;
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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); ?=^\kXc[
} 4*9t:D|}
} [Y?Y@x"MZ
} fBh/$
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} W'f"kM
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归并排序: ^u#iz
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package org.rut.util.algorithm.support; Pa+_{9
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import org.rut.util.algorithm.SortUtil; _ WPt
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/** z]C=nXbk
* @author treeroot 1
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* @since 2006-2-2 L,
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* @version 1.0 [}GK rI
*/ O9o ]4;
public class MergeSort implements SortUtil.Sort{ km][QEXs%
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/* (non-Javadoc) T9!NuKfur
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z
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*/ Iu~<Y(8^q#
public void sort(int[] data) { NI.ROk1{+4
int[] temp=new int[data.length]; = &?&}pVF
mergeSort(data,temp,0,data.length-1); HZ}Igw.Z
} {&^PDa|nD
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private void mergeSort(int[] data,int[] temp,int l,int r){ @iXBy:@
int mid=(l+r)/2; JR
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if(l==r) return ; xGbq,~_r
mergeSort(data,temp,l,mid); U<q`f-
mergeSort(data,temp,mid+1,r); vfvp#
for(int i=l;i<=r;i++){ I1l^0@J
temp=data; pwS"BTZ
} K/*"U*9Kv
int i1=l; nCp_RJu
int i2=mid+1; $pAVTz
for(int cur=l;cur<=r;cur++){ HS
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if(i1==mid+1) `Mbs6AJ
data[cur]=temp[i2++]; Eu"8IM!%-
else if(i2>r) u0,QsD)_X0
data[cur]=temp[i1++]; V9qA'k
else if(temp[i1] data[cur]=temp[i1++]; QT73=>^B
else {:VK}w
data[cur]=temp[i2++]; <?}pCX/O
} vr{|ubG]d
}
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Z!^>!'Z
} W2fcY;HZ
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改进后的归并排序: ov H'_'
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package org.rut.util.algorithm.support; `H>&dK|/
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import org.rut.util.algorithm.SortUtil; c}|.U
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/** 1%R${Qhr
* @author treeroot 5}Ge
* @since 2006-2-2 <nG}]Smd7
* @version 1.0 o<Mccj
*/ $'_Q@ZBq
public class ImprovedMergeSort implements SortUtil.Sort { n'{jc6&|
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private static final int THRESHOLD = 10; Q&w_kz.
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/* \}u/0UF97
* (non-Javadoc) z;2& d<h
* ?I?~BWu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T}1"
*/ bp}97ZQ
public void sort(int[] data) { );iJ9+ V}
int[] temp=new int[data.length]; <ta{)}IN^
mergeSort(data,temp,0,data.length-1); dmv0hof
} NIQ}+xpC
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private void mergeSort(int[] data, int[] temp, int l, int r) { 5lP8#O?=
int i, j, k; }~PG]A
int mid = (l + r) / 2; Qt{V&Z7
if (l == r) Pi |Z\j)
return; r(Z?Fs/
if ((mid - l) >= THRESHOLD) Qjnh;uBO
mergeSort(data, temp, l, mid); [A{o"zY
else ohyq/u+y~A
insertSort(data, l, mid - l + 1); KU{zzn;g
if ((r - mid) > THRESHOLD) :E|Jqi \
mergeSort(data, temp, mid + 1, r); ar,v/l>d4N
else xg^%8Ls^
insertSort(data, mid + 1, r - mid); LEtGrA/%@b
0<uLQVoR2n
for (i = l; i <= mid; i++) { .>[l@x"
temp = data; Vj1V;dHv
} sq(5k+y*J
for (j = 1; j <= r - mid; j++) { Opg_-Bf
temp[r - j + 1] = data[j + mid]; a3w6&e`
} 1pG|jT+Bi
int a = temp[l]; v?6*n>R
int b = temp[r]; @6+_0^
for (i = l, j = r, k = l; k <= r; k++) { \ >wQyz
if (a < b) { |.yS~XFJS
data[k] = temp[i++]; WHOy\j},V
a = temp; 6'e^np
} else { WjR2:kT
data[k] = temp[j--]; -bdWG]w"
b = temp[j]; 1BW 9,Xr
} b&4JHyleF
} Nl,iz_2]
} [bX^_ Y
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/** [.xc`CF
* @param data Hf1b&8&:K
* @param l ??P\v0E
* @param i 0g=vMLi
*/ 1'(";
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private void insertSort(int[] data, int start, int len) { &J|I&p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <P0 P*>M
} R<Mp$K^b
} [4YRyx&:++
} T95FoA
} g$"x,:2x{
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堆排序: $0P16ZlPC
#
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package org.rut.util.algorithm.support; Q<MxbHk9
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import org.rut.util.algorithm.SortUtil; |T"j7
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/** R)$]r>YZF
* @author treeroot ;w]1H&mc*A
* @since 2006-2-2 HGh)d` 8
* @version 1.0 aQY.96yo
*/ _7;G$\^&.
public class HeapSort implements SortUtil.Sort{ lFcHE c
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/* (non-Javadoc) HA}q.L]#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "5FP$oR
*/ ,|?#+O{
public void sort(int[] data) { i,Z-UA|f=T
MaxHeap h=new MaxHeap(); ,\3Cq2h
h.init(data); |9$C%@8
for(int i=0;i h.remove(); IN#/~[W
System.arraycopy(h.queue,1,data,0,data.length); 5?Q5cD2]\6
} ,aP5)ZN-
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private static class MaxHeap{ e?07o!7[;
d Efk~V\
void init(int[] data){ %yKcp5_
this.queue=new int[data.length+1]; ?5lO1(
for(int i=0;i queue[++size]=data; GyxLzrp
fixUp(size); Mg8ciV}\xY
} Ygg(qB1q
} Xm(#O1Vm(l
n[y^S3}%;
private int size=0; A~k:
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i
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private int[] queue; ds+2z=!!e
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public int get() { -H[@]Q4w
return queue[1]; !{(crfXB
} RhF<{U.
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public void remove() { YbWz!.WPe
SortUtil.swap(queue,1,size--); iny/K/5bf
fixDown(1); eW3?3l`fvt
} V8o,
e
file://fixdown aWLA6A+C&
private void fixDown(int k) { [rAi9LSO"
int j; GuL0:,
while ((j = k << 1) <= size) { ;BWWafZ
if (j < size %26amp;%26amp; queue[j] j++; XPt>klf
if (queue[k]>queue[j]) file://不用交换 }> C?Zx*
break; "iK'O =M
SortUtil.swap(queue,j,k); tId,Q>zH
k = j; g?}h*~<b
} SnvT !ca
} 1{cF/ :o
private void fixUp(int k) { !rqs!-cCQ
while (k > 1) { R&P^rrC@B5
int j = k >> 1; z1tCSt}7f
if (queue[j]>queue[k]) @ZV>Cl@%2
break; 94*MRn1E
SortUtil.swap(queue,j,k); F60m]NUM)c
k = j; #Ak9f-pf
} -(%Xq{
} YLSDJ$K6
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} v6x jLP;O
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} t I9p2!
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SortUtil: Z%3)w.
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package org.rut.util.algorithm; s6 K~I
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import org.rut.util.algorithm.support.BubbleSort; B4m34)EOE
import org.rut.util.algorithm.support.HeapSort; ^QHgc_oDm
import org.rut.util.algorithm.support.ImprovedMergeSort; we*E}U4
import org.rut.util.algorithm.support.ImprovedQuickSort; lqAv
import org.rut.util.algorithm.support.InsertSort; -&v0JvTJ9j
import org.rut.util.algorithm.support.MergeSort; $\20Vgu<
import org.rut.util.algorithm.support.QuickSort; `VglE?M
import org.rut.util.algorithm.support.SelectionSort; d1*0?G TT
import org.rut.util.algorithm.support.ShellSort; _71I9V&
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/** $"Ci{iE
* @author treeroot 4Xv."L
* @since 2006-2-2 4!'4 l=jO
* @version 1.0 ukD:4sv
*/ y,<\d/YY@
public class SortUtil { hrfSe $8
public final static int INSERT = 1; -Zg@#H
public final static int BUBBLE = 2; Fj<a;oV
public final static int SELECTION = 3; +~lPf.
public final static int SHELL = 4; N{!@M_C^%R
public final static int QUICK = 5; x.(Sv]+[
public final static int IMPROVED_QUICK = 6; 2)q$HUIX
public final static int MERGE = 7; OF!n}.O(
public final static int IMPROVED_MERGE = 8; Et)j6xz/F
public final static int HEAP = 9; 7Uh/Gl
:+fW#:
public static void sort(int[] data) { P&Hhq>@Z
sort(data, IMPROVED_QUICK); I[LHJ4
} Thp!X/2O`
private static String[] name={ 5@i(pVWZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GM@0$
}; (xBWxeL~
xw1n;IO4
private static Sort[] impl=new Sort[]{ ;@[ax{ J
new InsertSort(), K7
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new BubbleSort(), PV/ hnVUl
new SelectionSort(), 9 NC'iFQ#
new ShellSort(), vH?3UW
new QuickSort(), c 9zMI
new ImprovedQuickSort(), @ c%h fI
new MergeSort(), E-$N!KY
new ImprovedMergeSort(), uup>WW
new HeapSort() E.Arq6
}; l;;"v) C8
nrz2f7d$
public static String toString(int algorithm){ thQ)J |1
return name[algorithm-1]; ?
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} QPz3IK%
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public static void sort(int[] data, int algorithm) { XZpF<7l
impl[algorithm-1].sort(data); 9Jf.Ls
} |-vn,zpe
e?XQ,
public static interface Sort { Lq5Eu$;r
public void sort(int[] data); T_4y;mf!@O
} Ap%tm)@1
!
d " i
public static void swap(int[] data, int i, int j) { ZG-[Gz
int temp = data; "]1|%j
data = data[j]; VrZ6m
data[j] = temp; os`#:Ao5
} !XrnD#
} =:7OS>x