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。 hSqY$P
插入排序:
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package org.rut.util.algorithm.support; hPm>tV2X
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import org.rut.util.algorithm.SortUtil; =Je>`{J
/** Q.-*7h8
* @author treeroot `cP <}^]
* @since 2006-2-2 "vF
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* @version 1.0 W-2i+g)
*/ 0V,Nv9!S
public class InsertSort implements SortUtil.Sort{ |fsm8t<~8
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/* (non-Javadoc) Q}%tt=KD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0l^*nZ46t
*/ W+>wu%[L
public void sort(int[] data) { aA*9,
int temp; O>r-]0DI[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]o.vB}WsY
} 8 ,}ikOZ?
} @_'OyRd8
} A;K(J4y*
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} ~GB=Nz
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冒泡排序: N$aZ== $5
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package org.rut.util.algorithm.support; w*LbH]l<-
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import org.rut.util.algorithm.SortUtil; #Fd W/y5
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/** 9w~cvlv[
* @author treeroot D!>
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* @since 2006-2-2 ``4wX-y
* @version 1.0 \3Jq_9Xv
*/ s3t!<9[m
public class BubbleSort implements SortUtil.Sort{ Ub)I66
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/* (non-Javadoc) d+2daKi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zhEo(kU!
*/ +cg
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public void sort(int[] data) { >q( 5ir
int temp; U{1z;lJ
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y(i?M~3\t
if(data[j] SortUtil.swap(data,j,j-1); F|eu<^"$ H
} n.$(}A
} Q7Ij4
} 2_pz3<,\
} =Sxol>?t
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} 'Ji+c
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选择排序: 'V!kL,
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package org.rut.util.algorithm.support; %?tq;~|]Q
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import org.rut.util.algorithm.SortUtil; 'h*Zc}Q:
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/** 1j3=o }m
* @author treeroot ])$S\fFm
* @since 2006-2-2 Y6eEGo"K.+
* @version 1.0 LM1b I4
*/ hx!`F
public class SelectionSort implements SortUtil.Sort { k&GHu0z
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/* ,P@QxnQ
* (non-Javadoc) z\}!RBOq
* Ak=UtDN[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?)cJZ>$!w
*/ D@hmO]5c
public void sort(int[] data) { < l[`"0
int temp; [ X|OrRA
for (int i = 0; i < data.length; i++) { 1g i}H)
int lowIndex = i; O,9X8$5H-a
for (int j = data.length - 1; j > i; j--) { N1?
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if (data[j] < data[lowIndex]) { A?Sm-#n{
lowIndex = j; \Da~p9T&
} FOp_[rR
} (46U|P(v
SortUtil.swap(data,i,lowIndex); &7F&}7*c
} E& ]_U$
} Gg+YfY_
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} Qa?QbHc
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Shell排序: M9g1d7%
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package org.rut.util.algorithm.support; a}D&$yz2
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import org.rut.util.algorithm.SortUtil; g.&\6^)8p
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/** ^V,@=QL3U
* @author treeroot Kz^ hQd
* @since 2006-2-2 Vx(;|/:
* @version 1.0 UJs?9]x>
*/ <w11nB)
public class ShellSort implements SortUtil.Sort{ +}]wLM}\UF
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/* (non-Javadoc) Y;PDZbK3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4+,*sn
*/ 9;:7e*x]lc
public void sort(int[] data) { Oi#k:vq4
for(int i=data.length/2;i>2;i/=2){ s @3zx
for(int j=0;j insertSort(data,j,i); &`5 :GLV
} %,E7vYjT%
} gU*I;s>
insertSort(data,0,1); "lb\c
} ,dq`EsHg`M
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/** ,|>nF;.Y
* @param data L/%xbm~
* @param j <m9JXO:5
* @param i PE +qYCpP9
*/ |O^V)bZmx
private void insertSort(int[] data, int start, int inc) { ,P1G?,y
int temp; gGD]t;<u
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Is~yVB02
} _4De!q0(
} ; vhnA$'a
} 4v i B=>
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} |HT)/UZ|
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快速排序: Ez wF`3RjK
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package org.rut.util.algorithm.support; 7jD@Gp`" 3
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import org.rut.util.algorithm.SortUtil; VdYOm
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/** 047*gn.b
* @author treeroot il<gjlyR]L
* @since 2006-2-2 I%C]>ZZh
* @version 1.0 6YB-}>?
*/ YlxUx
public class QuickSort implements SortUtil.Sort{ A89Y;_4y
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/* (non-Javadoc) R#rh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GWVEIZ
*/ WIhIEU7 /
public void sort(int[] data) { <;.}WQC
quickSort(data,0,data.length-1); @faF`8LwA
} w`2_6[,9
private void quickSort(int[] data,int i,int j){ w?*'vF_2:#
int pivotIndex=(i+j)/2; 3ytx"=B%
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SortUtil.swap(data,pivotIndex,j); kjQIagw
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int k=partition(data,i-1,j,data[j]); Z%(Df3~gmm
SortUtil.swap(data,k,j); |rG8E;>
if((k-i)>1) quickSort(data,i,k-1); +A;n*DF2
if((j-k)>1) quickSort(data,k+1,j); m(Pz7U.Q
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} R|d^M&K,
/** ~{kA) :
* @param data pO@k@JZ
* @param i T(t
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* @param j 50O7=
* @return pb $ An<P
*/ D"1vw<Ak
private int partition(int[] data, int l, int r,int pivot) { m&;zLBA;
do{ U:C-\ M
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (dw3'W
SortUtil.swap(data,l,r); J?UZN^
} q|de*~@-P
while(l SortUtil.swap(data,l,r); l#<}|b
return l; !]UU;8h~
} S:"z<O
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} H-PW(
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改进后的快速排序: FN8=YUYK%
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package org.rut.util.algorithm.support; C>\h?<s
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import org.rut.util.algorithm.SortUtil; bHlD m~5
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/** D{3 x}5
* @author treeroot UlLM<33_)
* @since 2006-2-2 e{#a{`?Uez
* @version 1.0 LmT[N@>"
*/ Z1qATXXf
public class ImprovedQuickSort implements SortUtil.Sort { [f0oB$
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private static int MAX_STACK_SIZE=4096; ^`B##9g~
private static int THRESHOLD=10;
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/* (non-Javadoc) bl+@}+A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0wa!pE"
*/ 6vp8LNSW
public void sort(int[] data) { CzDR% v x
int[] stack=new int[MAX_STACK_SIZE]; GhfUCW%
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int top=-1; 2 |kH%
int pivot; &>wce5uV
int pivotIndex,l,r; OKLggim{
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stack[++top]=0; E]U3O>hf
stack[++top]=data.length-1; :6Pc m3
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while(top>0){ ,VcDvZ7
int j=stack[top--]; U!-+v:SF
int i=stack[top--]; +8@`lDnr
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pivotIndex=(i+j)/2; { ves@p>?
pivot=data[pivotIndex]; O|7{%5h
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SortUtil.swap(data,pivotIndex,j); yPxG`w'
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file://partition q MT.7n:
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r=j; S&))
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do{ MnrGD>M@|
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?GD?J(S
SortUtil.swap(data,l,r); ]38<ly7
} >7Sl(
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while(l SortUtil.swap(data,l,r); ))+98iU1s
SortUtil.swap(data,l,j); oTV8rG
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if((l-i)>THRESHOLD){ V]PhXVJ
stack[++top]=i; rj f=qh5s
stack[++top]=l-1; ';CuJXAj
} ~FCSq:_
if((j-l)>THRESHOLD){ P+%)0*W
stack[++top]=l+1; w5/X{
stack[++top]=j; kpreTeA]
} {s^ryv_}
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} zam0(^=
file://new InsertSort().sort(data); }ok
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insertSort(data); F@(}=w^(A
} gwB>oi*OE
/** f]6`GsE
* @param data P(i2bbU
*/ 0N[DV]
private void insertSort(int[] data) { xS-nO_t 'E
int temp; G~hILW^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3%4Mq6Q`
} ,4T$
} 2?7hUaHX
} e2o9)=y
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} |iJZC
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归并排序: :a!a
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package org.rut.util.algorithm.support; 1% %Tm"
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import org.rut.util.algorithm.SortUtil; MW@b;=(
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/** 959jp85
* @author treeroot Tka="eyIj3
* @since 2006-2-2 Zo ReyY2
* @version 1.0 zVLi
*/ kV9NFo22
public class MergeSort implements SortUtil.Sort{ < io8
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