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。 4}=Z+tDu>
插入排序: ;!N_8{
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package org.rut.util.algorithm.support; r)t-_p37
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import org.rut.util.algorithm.SortUtil; 4EEXt<c.
/** 7tz#R:
* @author treeroot _S#3!Wx
* @since 2006-2-2 &l1CE19<
* @version 1.0 |-k~Fa
*/ EPwM+#|e-
public class InsertSort implements SortUtil.Sort{ !F*CE cB
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/* (non-Javadoc) 0- -0+?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >5=uq
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*/ !_UBw7Zm
public void sort(int[] data) { P&]PJt5
int temp; I!-5
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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); h/F,D_O>ZO
} ;F'/[l{+
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} e$@a zi1
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冒泡排序: ~w9ZSSb4
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package org.rut.util.algorithm.support; 0E#3XhU
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import org.rut.util.algorithm.SortUtil; ~/kx
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/** vy330SQPo
* @author treeroot QZ51}i
* @since 2006-2-2 q!zsGf{
* @version 1.0 JdeGQ
*/ -{XXU )Z
public class BubbleSort implements SortUtil.Sort{ ' fm}&0
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/* (non-Javadoc) F45UO%/P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O(QJiS
*/ ^iq$zHbc0u
public void sort(int[] data) { DR6 OR B7
int temp; x,SzZ)l-9
for(int i=0;i for(int j=data.length-1;j>i;j--){ UN*XLHio
if(data[j] SortUtil.swap(data,j,j-1); wsNM'~(
} Mw+8p}E
} -=D6[DjU<
} d4zqLD$A
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选择排序: O.8{c;
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package org.rut.util.algorithm.support; KzC`*U[
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import org.rut.util.algorithm.SortUtil; pP6pn~}
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/** Eo }mSd
* @author treeroot xc+h
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* @since 2006-2-2 F$Q@UVA
* @version 1.0 u*$ 1e
*/ C}{$'#DV2
public class SelectionSort implements SortUtil.Sort { 2x7%6'
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/* G6b\4}E
* (non-Javadoc) to
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pPdOwK#
*/ ~\z\f}w
public void sort(int[] data) { jci'q=Vpu
int temp; "3i=kvdz
for (int i = 0; i < data.length; i++) { S?5z
int lowIndex = i; YbrsXp"
for (int j = data.length - 1; j > i; j--) { qeyBZ8BG
if (data[j] < data[lowIndex]) { HEjrat;5
lowIndex = j; Wh)QCp0|n
} X>#!s Lt
} QxmVImn"
SortUtil.swap(data,i,lowIndex); FFNv'\)
} |h,aV(Q
} 04wmN
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}
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Shell排序: hfGA7P"
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package org.rut.util.algorithm.support; @Ooh}V#J
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import org.rut.util.algorithm.SortUtil; DaW_-:@s
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/** Z;_WU
* @author treeroot #n'tpp~O
* @since 2006-2-2 \DE`tkV8
* @version 1.0 j_?U6$xi
*/ k.DDfuKN
public class ShellSort implements SortUtil.Sort{ uSs~P%@6|
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/* (non-Javadoc) c4R6E~S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^AUmIyf_
*/ }cll? 2
public void sort(int[] data) { PF1m :Iz`d
for(int i=data.length/2;i>2;i/=2){ zX!zG<<K
for(int j=0;j insertSort(data,j,i); A}b<Lg
} otXB:a
} (s,*soAN
insertSort(data,0,1); /R< Q~G|\
} ipEsR/O
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/** Ywf.,V
* @param data l|fOi A*K
* @param j /._wXH
* @param i ~<pGiW'w5
*/ 1X/
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private void insertSort(int[] data, int start, int inc) { e/WR\B'1
int temp; J*8fGR%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i8nCTW
} \)ac,i@fy
} ?Ee HeN_
} n2R{$^JxO
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} gUCv#:
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快速排序: oSt-w{!
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package org.rut.util.algorithm.support; .3,s4\.kT
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import org.rut.util.algorithm.SortUtil; iuq-M?1
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/** ]w FFGy
* @author treeroot 9[|Ql
* @since 2006-2-2 Pe/cwKCI
* @version 1.0 ]7ROCJ;
*/ u|\Lb2Kb:
public class QuickSort implements SortUtil.Sort{ _.Y?BAQ
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/* (non-Javadoc) abtAkf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @R?S-*o
*/ OFCOMM
public void sort(int[] data) { `,&h!h((
quickSort(data,0,data.length-1); gydPy*
} ^zQ;8)ng
private void quickSort(int[] data,int i,int j){ i7})VDsZ
int pivotIndex=(i+j)/2; pHY~_^B4&
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SortUtil.swap(data,pivotIndex,j); jGEUl=W
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int k=partition(data,i-1,j,data[j]); &|H?J,>
SortUtil.swap(data,k,j); jjkiic+tDN
if((k-i)>1) quickSort(data,i,k-1); bzmT.!
if((j-k)>1) quickSort(data,k+1,j); Fy<dk}@
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} ~xu<xy@E
/** 5 %q26&
* @param data JcZs\ fl9
* @param i ?G1-X~Z8
* @param j H.j(hc'
* @return 6d,jR[JP
*/ bxO8q57
private int partition(int[] data, int l, int r,int pivot) { 2<yE3:VX
do{ C]-Z+9Vvv
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OUe@U;l{Z
SortUtil.swap(data,l,r); Rw*l#cr=.
} ^l
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while(l SortUtil.swap(data,l,r); S(Xab_DT)H
return l; K3TMT Y<p
} M=e]v9
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} |qJQWmJO&U
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改进后的快速排序: Ym-uElWo
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package org.rut.util.algorithm.support; 4W~pAruwr
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import org.rut.util.algorithm.SortUtil; &?/h#oF@\
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/** p}!rPd*
* @author treeroot VLN=9
* @since 2006-2-2 :sFP{rFx~
* @version 1.0 7Rk eV
*/ |~W!Y\l-
public class ImprovedQuickSort implements SortUtil.Sort { YrjF1hJ
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private static int MAX_STACK_SIZE=4096; mKPyM<Q
private static int THRESHOLD=10; L\5j"]
}`
/* (non-Javadoc) >.SU=HG;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1/3Go97/qV
*/ B+wSLi(
public void sort(int[] data) { $Dd IY}
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; $k V^[
int pivot; }f<.07
int pivotIndex,l,r; ykxjT@[
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stack[++top]=0; n!&DLB1z
stack[++top]=data.length-1; k(><kuJ`3
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while(top>0){ 2r"-X
int j=stack[top--]; r@H<@Vuc
int i=stack[top--]; ITRv^IlF
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pivotIndex=(i+j)/2; m]+g[L?-
pivot=data[pivotIndex]; oJUVW"X6
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SortUtil.swap(data,pivotIndex,j); 0ho+Y@8
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file://partition "CB*
l=i-1; @/ wJW``;
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do{ +y>D3I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eRD?O
SortUtil.swap(data,l,r); A/,7%bB1
} wZ,9~P7
while(l SortUtil.swap(data,l,r); c</d1x T
SortUtil.swap(data,l,j); OnC|9
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if((l-i)>THRESHOLD){ amK?LDf]
stack[++top]=i; Ajr]&H4
stack[++top]=l-1; ce/Rzid
} !%_Z>a
if((j-l)>THRESHOLD){ xXE/pIXw
stack[++top]=l+1; PtCwr)B,
stack[++top]=j; SgHLs
} =K =FzV'_~
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} AiykIER/
file://new InsertSort().sort(data); ny|ni\6
insertSort(data); 5*{U!${a
} YW}q@AY7
/** (!&cfabL
* @param data _y#t[|}w
*/ h-=3b
private void insertSort(int[] data) { =da_zy
int temp; WQ<J<$$uu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); { ,/mQ3
} 3 ~0Z.!O
} iJk`{P _
} z[ B*sbS
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} PCH&eTKN
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归并排序: qgvg
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package org.rut.util.algorithm.support; }a,j1r_Hl&
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import org.rut.util.algorithm.SortUtil; FylL7n
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/** 'xm _oGWE
* @author treeroot fmXA;^%
* @since 2006-2-2 &/d;4Eu
* @version 1.0 XL>cTM
*/ '^'vafs-/@
public class MergeSort implements SortUtil.Sort{ V]tucs
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/* (non-Javadoc) 3XYCtp8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ra}%:
*/ Q9H~B`\nQ
public void sort(int[] data) { D'F=v\P
int[] temp=new int[data.length]; X#j-Ld{j
mergeSort(data,temp,0,data.length-1); Wjn1W;m&g
} o"->RC
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private void mergeSort(int[] data,int[] temp,int l,int r){ aB;syl{
int mid=(l+r)/2; Q>] iRx>MZ
if(l==r) return ; UM(tM9
mergeSort(data,temp,l,mid); N W :_)1
mergeSort(data,temp,mid+1,r); oJ\UF S
for(int i=l;i<=r;i++){ ~Jrtm7
temp=data; ]y>)es1
} -Mx"ox
int i1=l; + pZ, RW.D
int i2=mid+1; q{HfT
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for(int cur=l;cur<=r;cur++){ s9>f5u?dK
if(i1==mid+1) Q0i.gEwe
data[cur]=temp[i2++]; iY1%"x
else if(i2>r) H'Bor\;[>
data[cur]=temp[i1++]; O l1[ o
else if(temp[i1] data[cur]=temp[i1++]; fpJM)HU
else vyP3]+n
data[cur]=temp[i2++]; 1P:r=Rt/
}
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} o7)<