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。 N UvVhy]{
插入排序: |O6/p7+.
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package org.rut.util.algorithm.support; $./aKJ1B
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import org.rut.util.algorithm.SortUtil; *r[V[9+y-D
/** kX+9U"`
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* @author treeroot 0;@>jo6,!
* @since 2006-2-2 d/jP2uuA
* @version 1.0 `A%WCd60Tc
*/ vb?.`B_>&
public class InsertSort implements SortUtil.Sort{ 9od*N$
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/* (non-Javadoc) S5u$I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Bw#VQ
*/ }eW<P079
public void sort(int[] data) { $OdBuJA
int temp; 1<1+nGO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); GS=E6
} x>B\2;
} fz`)CWo:
} 4ryG_p52l
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} 8#lq:
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冒泡排序: m7y[Y
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package org.rut.util.algorithm.support; :H3/+/x
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import org.rut.util.algorithm.SortUtil; Q.$Rhjb
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/** W>i%sHH6
* @author treeroot zG<<MR/<
* @since 2006-2-2 .4R.$`z4
* @version 1.0 lya},_WCq
*/ Q&vdBO/
public class BubbleSort implements SortUtil.Sort{ ~G@YA8}
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/* (non-Javadoc) tB"9%4](
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z`t~N
*/ NJ.oM E@=
public void sort(int[] data) { ]b;m~|9
int temp; x x>hJ!
for(int i=0;i for(int j=data.length-1;j>i;j--){ C
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if(data[j] SortUtil.swap(data,j,j-1); 'nGUm[vh
} ,lA@C2c
} OqIXFX"
} G\BZ^SwE
} J_Tz\bZ3)
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} AK,'KO%{=
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选择排序: eGq7+
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package org.rut.util.algorithm.support; #f) TAA
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import org.rut.util.algorithm.SortUtil; ~qeFSU(
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/** }}$@Tij19[
* @author treeroot hBpa"0F
* @since 2006-2-2 O#ZZ PJ"
* @version 1.0 PBb&.<
*/ 9/29>K_
public class SelectionSort implements SortUtil.Sort { PjEJC@n
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/* $Q8
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* (non-Javadoc) 5[SwF&zZ
* rX?ZUw?u&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9/{ zS3h3
*/ eNK
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public void sort(int[] data) { .>F4s_6l
int temp; =?.oH|&\h
for (int i = 0; i < data.length; i++) { uStAZ~b\
int lowIndex = i; O6G'!h\F
for (int j = data.length - 1; j > i; j--) { ]$Z:^"JS3
if (data[j] < data[lowIndex]) {
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lowIndex = j; Y /_CPY
} LZe)_9$
} 3r kcIVO
SortUtil.swap(data,i,lowIndex); sd\p[MXX
} A_oZSUrR
} $xZ ~bE9
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} `L`+`B
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Shell排序: K-C,n~-
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package org.rut.util.algorithm.support; |}
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import org.rut.util.algorithm.SortUtil; `9K5 ;]
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/** <Pt?N2]A|
* @author treeroot Z)W8Of_
* @since 2006-2-2 Blzvn19'h
* @version 1.0 I61S0lz/
*/ :LNE?@
public class ShellSort implements SortUtil.Sort{ h:362&?]
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/* (non-Javadoc) v5S9h[gT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (~^fx\-S
*/ 2uE<mjCt-r
public void sort(int[] data) { 6I@j$edZ
for(int i=data.length/2;i>2;i/=2){ BM,hcTr?
for(int j=0;j insertSort(data,j,i); v{a%TA9-
} Q!1 ;xw~
} Z{0BH{23
insertSort(data,0,1); f+ceL'fr
} 8-nf4=ll
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/** zg<-%r'$
* @param data .
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* @param j B]"`}jn
* @param i 3 2\.-v
*/ aP
private void insertSort(int[] data, int start, int inc) { t
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int temp; V[nPTYO4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g;63$_<
} T(7`$<TQ
} 29RP$$gR
} xGwImF$r
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} #_ |B6!D!
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快速排序: [v"Z2F<.=
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package org.rut.util.algorithm.support; ~U]g;u
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import org.rut.util.algorithm.SortUtil; LBK{-(%
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/** Sf, z
* @author treeroot pD$4nH4KST
* @since 2006-2-2 ':wf%_Iw
* @version 1.0 c
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*/ VyxYv-$Y
public class QuickSort implements SortUtil.Sort{ 1XSnnkJm
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/* (non-Javadoc) x"12$ 79=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :x\[aG9
*/ %PYl
public void sort(int[] data) { crM5&L9zF
quickSort(data,0,data.length-1); Q*smH-Sw
} u<BU4c/p
private void quickSort(int[] data,int i,int j){ -&8( MT*
int pivotIndex=(i+j)/2; &R72$H9C8i
file://swap S:_Ms{S
SortUtil.swap(data,pivotIndex,j); YO7U}6wBt
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int k=partition(data,i-1,j,data[j]); QO'Hyf t
SortUtil.swap(data,k,j); :X;G]B
.
if((k-i)>1) quickSort(data,i,k-1); Kq")\Ha,f
if((j-k)>1) quickSort(data,k+1,j); X(N~tE
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} m@2E ~m
/** \cIN]=#
* @param data gpV4qDXV
* @param i EjR(AqZY
* @param j Uk?G1]$mL
* @return uYUFxm
*/ XQ]K,# i
private int partition(int[] data, int l, int r,int pivot) { h:%,>I%{
do{ d/7fJ8y8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MgJ6{xzz
SortUtil.swap(data,l,r); 7=l~fKu
} \]tBwa
while(l SortUtil.swap(data,l,r); S>yi D`v
return l;
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} }e[ E
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} k)p`x"To
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改进后的快速排序: .q@?sdGD
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package org.rut.util.algorithm.support; Lzh8-d=HQ
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import org.rut.util.algorithm.SortUtil; <>] DcA
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/** HbKE;N
* @author treeroot +MoUh'/u
* @since 2006-2-2 hhTtxC<:
* @version 1.0 E=s h^Q(A
*/ TjW!-s?S
public class ImprovedQuickSort implements SortUtil.Sort { OdzeHpH3g
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private static int MAX_STACK_SIZE=4096; !m@cTB7i
private static int THRESHOLD=10; fzSkl`K}
/* (non-Javadoc) /7AHd ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BPY7O
*/ zwfft
public void sort(int[] data) { HXLnjXoe
int[] stack=new int[MAX_STACK_SIZE]; 6>vR5pn
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int top=-1; C(N'=-;Kl
int pivot; %rW}x[M%w?
int pivotIndex,l,r; my'nDi
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stack[++top]=0; gX}'b\zxC
stack[++top]=data.length-1; ;2f=d_/x
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while(top>0){ 2f,8Jnia
int j=stack[top--]; dN{At-
int i=stack[top--]; y~9wxK
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pivotIndex=(i+j)/2; @kYY1m v;
pivot=data[pivotIndex]; _jQ:9,;
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SortUtil.swap(data,pivotIndex,j); L AQ@y-K3
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file://partition Wg-mJu(
l=i-1; r&u1-%%9[
r=j; F @PPhzZ
do{ NQdwj>_a
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V}E['fzBFV
SortUtil.swap(data,l,r); o0H^J,6gV
} `Y&`2WZ ~
while(l SortUtil.swap(data,l,r); $S6(V}yh
SortUtil.swap(data,l,j); Rh'z;Gyr
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if((l-i)>THRESHOLD){ 0Wr<l%M)+
stack[++top]=i; QQJGqM3a2
stack[++top]=l-1; s9?mX@>h
} { 53FR
if((j-l)>THRESHOLD){ H=/1d.p
stack[++top]=l+1; ]iV]7g8:
stack[++top]=j; <5zR-UA>
} oC&}lp)q
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} A*h8 o9M
file://new InsertSort().sort(data); odP<S.
insertSort(data); j+jC
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} Jf^3nBZ
/** R`j"iC2
* @param data Pf;OYWST
*/ uYC^&siS<s
private void insertSort(int[] data) { x;mw?B[
int temp; 9{pT)(Wnb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z
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} YD4I2'E
} a*M|_&MH*
} %['NPs%B
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} N_%@_$3G]
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归并排序: Wv4$Lgr
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package org.rut.util.algorithm.support; Qf:e;1F!
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import org.rut.util.algorithm.SortUtil; S>lP?2J
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/** <&eJIz=
* @author treeroot `,O7S9]R+
* @since 2006-2-2 {z o GwB
* @version 1.0 %Wtf24'o;v
*/ =ejcP&-V/
public class MergeSort implements SortUtil.Sort{ F8%^Ed~@
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/* (non-Javadoc) 6~dAK3v5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O"\4[HE^
*/ S^s-md>
public void sort(int[] data) { Ar%*NxX
int[] temp=new int[data.length]; M6-uTmN:d
mergeSort(data,temp,0,data.length-1); '(K4@[3t
} dsIbr"m
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private void mergeSort(int[] data,int[] temp,int l,int r){ B)q }]Qn
int mid=(l+r)/2; 2a@X-Di
if(l==r) return ; iwnGWGcuS
mergeSort(data,temp,l,mid); I
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mergeSort(data,temp,mid+1,r); ,2AulX1
for(int i=l;i<=r;i++){ ~<1s[Hu
temp=data; w1<pQ[A
} P2'c{],3V
int i1=l; +*.*bo
int i2=mid+1; )Kx.v'
for(int cur=l;cur<=r;cur++){ eC/{c1C
if(i1==mid+1) AQ-PHv
data[cur]=temp[i2++]; \>$zxC_
else if(i2>r) ?y|&Mz'XJ(
data[cur]=temp[i1++]; Zbo4{.#
else if(temp[i1] data[cur]=temp[i1++]; RFw0u 0Nrz
else 7(/yyZQnZ
data[cur]=temp[i2++]; g}~s"Sz
} bK "I9T #
} zlLZ8b+
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} W[jg+|
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改进后的归并排序:
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package org.rut.util.algorithm.support; k4#j
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import org.rut.util.algorithm.SortUtil; f@sC~A. 9\
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/** '@t,G,FJ
* @author treeroot u?>},M/
* @since 2006-2-2 05F/&+V
* @version 1.0 c:Czu
*/ W2`3 p
public class ImprovedMergeSort implements SortUtil.Sort { B1X&O d
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private static final int THRESHOLD = 10; m03dL^(
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/* zd_N' :6
* (non-Javadoc) Ry[7PLn]
* #>yOp *
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A^lm 0[3q
*/ 9>{ml&$
public void sort(int[] data) { @+;.W>^h
int[] temp=new int[data.length]; #~Xj=M%
mergeSort(data,temp,0,data.length-1); ]Mq-67
} )
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private void mergeSort(int[] data, int[] temp, int l, int r) { 9#[,{2pJr
int i, j, k; 2-m@-
int mid = (l + r) / 2; f['I4 /o
if (l == r) l&\y]ZV={
return; WG,Il/
if ((mid - l) >= THRESHOLD) W,8Uu1X =
mergeSort(data, temp, l, mid); a[;L+
else \=({T_j4
insertSort(data, l, mid - l + 1); uou
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if ((r - mid) > THRESHOLD) U]pE{^\w
mergeSort(data, temp, mid + 1, r); gwNZ`_Q
else >~d'i
insertSort(data, mid + 1, r - mid); 5[2kk5,
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for (i = l; i <= mid; i++) { y ;mk]
temp = data; [Zdrm:=]L
} 8XV RRk
for (j = 1; j <= r - mid; j++) { 6b*xhu\
temp[r - j + 1] = data[j + mid]; `C_qqf
} h[!@8
int a = temp[l]; tIn`L6b
int b = temp[r]; CeU=A9
for (i = l, j = r, k = l; k <= r; k++) { 9qa/f[G
if (a < b) { &y0Gdzf