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。 v}z{OB
插入排序: pHDPj,lu
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package org.rut.util.algorithm.support; }W]k1Bsx
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import org.rut.util.algorithm.SortUtil; f%d
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/** 2-wvL&pi)
* @author treeroot l]e7
* @since 2006-2-2 GZFLJu
* @version 1.0 na4^RPtN\e
*/ ws}>swR,
public class InsertSort implements SortUtil.Sort{ g!;Hv
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/* (non-Javadoc) .Wci@5:3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kObgoMT<[
*/ b9Ix*!Y
public void sort(int[] data) { oU~ e|
int temp; %1]Lc=[j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7\;gd4Ua1
} fm%-wUgj
} ! XNTk]!
} (V~PYf%
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冒泡排序: &5wM`
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package org.rut.util.algorithm.support; j]_"MMwk$<
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import org.rut.util.algorithm.SortUtil; s%qK<U4@;Q
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/** ViT$]Nv
* @author treeroot =G2A Ufn
* @since 2006-2-2 QI2T G,
* @version 1.0 A|U_$!cLZ
*/ D3%`vqu&
public class BubbleSort implements SortUtil.Sort{ SA$1rqU=
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/* (non-Javadoc) ?l<u %o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n\y%5J+
*/ e6?h4}[+*
public void sort(int[] data) { ;yH1vX
int temp; vN4g#,<
for(int i=0;i for(int j=data.length-1;j>i;j--){ s*j0uAq)up
if(data[j] SortUtil.swap(data,j,j-1); M%2F7 FY
} PUViTb
} NLxsxomj
} Q:B :
} 8.Ty
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} A5ps|zidI
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选择排序: AiO29<
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package org.rut.util.algorithm.support; P}QuGy[
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import org.rut.util.algorithm.SortUtil; l0$
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/** u{ .UZTn
* @author treeroot x~tG[Y2F?
* @since 2006-2-2 7MT[fA8^
* @version 1.0 k iCg+@nT
*/ \/9uS.Kw
public class SelectionSort implements SortUtil.Sort { ~T[m{8uh
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/* v(t?d
* (non-Javadoc) hQfxz,X
* b|*A%?m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |3MqAvPJ
*/ xCV3HnZ
public void sort(int[] data) { HJ*W3Mg
int temp; a[GlqaQy+-
for (int i = 0; i < data.length; i++) { b='YCa
int lowIndex = i; "+ji`{
for (int j = data.length - 1; j > i; j--) { ukr
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if (data[j] < data[lowIndex]) { 3y?ig2
lowIndex = j; pr[[)[]/
} T(^<sjOs
} &4yI]
SortUtil.swap(data,i,lowIndex); $CVbc%
} )*iSN*T8q
} jn#
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} <Ep-aRI
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Shell排序: Au,}5=+`P
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package org.rut.util.algorithm.support; S0~F$mP'
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import org.rut.util.algorithm.SortUtil; Ss&R!w9p
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/** rK2*DuE
* @author treeroot 4
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* @since 2006-2-2 $N=A, S
* @version 1.0 G~e`O,+
*/ c]W]m`:
public class ShellSort implements SortUtil.Sort{ \+g95|[/
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/* (non-Javadoc) @qH<4`y.^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c)M_&?J!5
*/ -~
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public void sort(int[] data) { xS,#TU;)Ol
for(int i=data.length/2;i>2;i/=2){ GjA;o3(
for(int j=0;j insertSort(data,j,i); @M"h_Z1#
} pVw)"\S%
} Q<r O5 -K
insertSort(data,0,1); d3(T=9;f2
} -iS\3P.
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/** ?iUAzM8
* @param data Y2w 9]:J
* @param j M*E4:A9_M
* @param i r$6z{Na\[
*/ 2|#3rF
private void insertSort(int[] data, int start, int inc) { ue$\i =jw
int temp; .Lp0_R@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); a$FELlMv
} H.Z:at5n
} Sg0 _ l(
} Y=4 ,d4uu
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} K,^{|5'3q
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快速排序: c% 0h!zF
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package org.rut.util.algorithm.support; 'UT 4x9&z
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import org.rut.util.algorithm.SortUtil; ^^%sPtp
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/** VD.p"F(]
* @author treeroot !w98[BE7
* @since 2006-2-2 +tOBt("5/
* @version 1.0 TjlKy
*/ e0*',
public class QuickSort implements SortUtil.Sort{ ZV_Z)<
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/* (non-Javadoc) JMOQDo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Om{[ <tL
*/ !/['wv@
public void sort(int[] data) { W<B8P S$
quickSort(data,0,data.length-1); /U6G?3b
} 5 8p_b
private void quickSort(int[] data,int i,int j){ ALwkX"AN
int pivotIndex=(i+j)/2; *n2Q_o
file://swap yIbz\3
SortUtil.swap(data,pivotIndex,j); M0 x5s@
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int k=partition(data,i-1,j,data[j]); W==HV0n
SortUtil.swap(data,k,j); bUp%87<*X
if((k-i)>1) quickSort(data,i,k-1); n\.K:t[:
if((j-k)>1) quickSort(data,k+1,j); = M7FD
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} PT|^RF%fT
/** QM9~O#rL
* @param data < 7zyRm@S
* @param i g^^%4Y
* @param j fh
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* @return @iy ^a
*/ )"jG)c^1*
private int partition(int[] data, int l, int r,int pivot) { }vxb, [#
do{ hX 9.%-@sR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); netKt_
SortUtil.swap(data,l,r); HPCgv?E3
} 7J,W#Ql)5
while(l SortUtil.swap(data,l,r); {{[).o/
return l; ^QB/{9 #
} E[t\LTt*n
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} B8|=P&L7N
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改进后的快速排序: M`KrB5a+6
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package org.rut.util.algorithm.support; C1|e1
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import org.rut.util.algorithm.SortUtil; fmA&1u/xMs
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/** ^;NM'Z
* @author treeroot 8b(UqyV
* @since 2006-2-2 ;MCv
* @version 1.0 dj?.Hc7od
*/ //e.p6"8h
public class ImprovedQuickSort implements SortUtil.Sort { _w^p~To^
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private static int MAX_STACK_SIZE=4096; ?;|$R
private static int THRESHOLD=10; s:R>uGYOd
/* (non-Javadoc) v.cB3/$z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nb#E+\q
*/ t\{q,4
public void sort(int[] data) { A!<R?
int[] stack=new int[MAX_STACK_SIZE]; *AGC[w}/
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int top=-1; ;#3!ZB:}
int pivot; fbwo2qe@K
int pivotIndex,l,r; 6}x^T)R
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stack[++top]=0; sryujb.,
stack[++top]=data.length-1; EiP_V&\
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while(top>0){ _myam3[W
int j=stack[top--]; !;'U5[}8
int i=stack[top--]; EZIMp8^
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pivotIndex=(i+j)/2; {NKDmeg:D
pivot=data[pivotIndex]; y= cBpC
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SortUtil.swap(data,pivotIndex,j); ]Vl*!,(i
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file://partition
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r=j; KTBsH; 6
do{ [ #A!B#`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6N~~:Gt
SortUtil.swap(data,l,r); yXppu[=
} x
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while(l SortUtil.swap(data,l,r); /qo. Z
SortUtil.swap(data,l,j); /_x?PiL
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if((l-i)>THRESHOLD){ Bu>srX9f
stack[++top]=i;
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stack[++top]=l-1; ;'}1
} 4rwfY<G
if((j-l)>THRESHOLD){ @ L% 3}
stack[++top]=l+1; I@+dE V`Lf
stack[++top]=j; /Kwo^Q{
} &UbNp8h
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} eO(VSjo'`
file://new InsertSort().sort(data);
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insertSort(data); 9!_`HE+(XJ
} &Zd{ElM
/** m,Q<4'
* @param data H:,rNaz7D^
*/ Z)62/`C)
private void insertSort(int[] data) { C%}FVO\c
int temp; 2Ev~[Hb.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lY.FmF}k
} mZ7.#R*}
} 9i yNR!
} d@7
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} 2P!Pbl<
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归并排序: f/*Xw {s#
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package org.rut.util.algorithm.support; Ga.a"\F.V
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import org.rut.util.algorithm.SortUtil; 1W$ @ V!
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/** MHI0>QsI
* @author treeroot ~BrERUk
* @since 2006-2-2 c/x ^I{b*
* @version 1.0 t$]lK6
*/ |M)'@s:
public class MergeSort implements SortUtil.Sort{ Wl;F]_|*(
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/* (non-Javadoc) nI|jUD+y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]hS4'9lD
*/ db@i*Bf
public void sort(int[] data) { h.sH:]Z
int[] temp=new int[data.length]; Pqo"~&Y|~
mergeSort(data,temp,0,data.length-1); c:>&Bg&,6T
} u~bk~3.I
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private void mergeSort(int[] data,int[] temp,int l,int r){ vtCt6M
int mid=(l+r)/2; vbmi_[,U
if(l==r) return ; <^
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mergeSort(data,temp,l,mid); la</IpC
mergeSort(data,temp,mid+1,r); ,wlFn
for(int i=l;i<=r;i++){ n0>#?ek12
temp=data; 9y>dDNM\<
} GBHv| GO
int i1=l; b5No>U) /
int i2=mid+1; +a"MSPC4w
for(int cur=l;cur<=r;cur++){ x`WP*a7Fk]
if(i1==mid+1) x: `oqbd
data[cur]=temp[i2++]; P`@d8%*;
else if(i2>r) .,o=#
data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; pzg|?U
else (}V.xi
data[cur]=temp[i2++]; '.c[7zL
} Ldf<
} :+bQPzL
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} &UEr4RK;I
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改进后的归并排序: W[AX?
8jMw7ti
package org.rut.util.algorithm.support; %qV=PC
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import org.rut.util.algorithm.SortUtil; Xg^`fRg =T
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/** X#Y0g`muW
* @author treeroot =XzrmPu
* @since 2006-2-2 GXr9J rs.e
* @version 1.0 K#%L6=t$<
*/ :p;!\4)u
public class ImprovedMergeSort implements SortUtil.Sort { Ew*_@hVC
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private static final int THRESHOLD = 10; "4<RMYQ
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/* kl?U2A.=
* (non-Javadoc) re2M!m6k5
* 4`I2tr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FDbb/6ku
*/ %\6|fKB4<
public void sort(int[] data) { :rk=(=@8`
int[] temp=new int[data.length]; fINF;TK
mergeSort(data,temp,0,data.length-1); qg7.E+
} ZNuz%VO
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private void mergeSort(int[] data, int[] temp, int l, int r) { EeIV6ug
int i, j, k; )D{L<.i_
int mid = (l + r) / 2; b^~ keQ
if (l == r) "_eHK#)
return; E/v.+m
if ((mid - l) >= THRESHOLD) <4ccT l
mergeSort(data, temp, l, mid); ` .|JTm[
else [a:yKJ[
insertSort(data, l, mid - l + 1); ,|D_? D)U
if ((r - mid) > THRESHOLD) Iojyku\W.
mergeSort(data, temp, mid + 1, r); Nj$3Ig"l
else qjFz}6
insertSort(data, mid + 1, r - mid); 8UJK]_99I,
q_bE?j{
for (i = l; i <= mid; i++) { VUpa^R
temp = data; eee77.@y-p
} cY8XA6
for (j = 1; j <= r - mid; j++) { |`+kZ-M*
temp[r - j + 1] = data[j + mid]; E
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} X;lL$
int a = temp[l]; 9UsA>m.
int b = temp[r]; )_k"_VVcC
for (i = l, j = r, k = l; k <= r; k++) { IppzQ0'=y1
if (a < b) { Ls< ";QJc
data[k] = temp[i++]; @<=x fs
a = temp; Uy2NZ%rnt
} else { "(zvI>A
data[k] = temp[j--]; #tg,%*.s
b = temp[j]; >Akrbmh5
} 9>yLSM,!rS
} YT'G#U1x~
} a"SH_+T{
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/** {; #u~e(W
* @param data H=Scrvfx
* @param l }{T9`^V:h
* @param i %sxLxx_x!
*/ 7r;7'X5
private void insertSort(int[] data, int start, int len) { Jmrs@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8mj Pa^A
} v%v(-, _q
} '#RzX8|v<
} K2$ fKju
} kW#,o 9f\
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堆排序: C))5,aX
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package org.rut.util.algorithm.support; t"x
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import org.rut.util.algorithm.SortUtil; 4wYD-MB
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/** .1n=&d|
* @author treeroot 701a%Jq_2
* @since 2006-2-2 1P4cBw%
* @version 1.0 JjA3G`m=
*/ KZy2c6XO;
public class HeapSort implements SortUtil.Sort{ ~puXZCatN
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/* (non-Javadoc) :btb|^C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lS@0 $
*/ MDV<[${
public void sort(int[] data) { ?YE'J~0A6
MaxHeap h=new MaxHeap(); @Wgd(Ezd
h.init(data); TL&