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。 ms<u YLp
插入排序: v$/i5kcWx
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package org.rut.util.algorithm.support; #f;1f8yrN
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import org.rut.util.algorithm.SortUtil; grAL4
/** r74w[6(
* @author treeroot s(Bi&C\
* @since 2006-2-2 0MGK3o)
* @version 1.0 [z@RgDXv
*/ .h^Ld,Chj
public class InsertSort implements SortUtil.Sort{ ,8?*U]}
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/* (non-Javadoc) usf(U>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -vAG5x/ ,
*/ !O_^Rn+<2
public void sort(int[] data) { >8t[EsW/
int temp; vg1s5Yqk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _!1c.[\T
} y+R$pzX
} #N}}8RL
} sswAI|6ou
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冒泡排序: 8^i,M^f^{
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package org.rut.util.algorithm.support; 5j5t?G;d,
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import org.rut.util.algorithm.SortUtil; tO3B_zC
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/** yE{UV>ry
* @author treeroot UpBYL?+L
* @since 2006-2-2 RVy 87_J1
* @version 1.0 >&Lu0oHH
*/ iPNsEQ0We
public class BubbleSort implements SortUtil.Sort{ gipRVd*TA
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/* (non-Javadoc) k-0e#"B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uRhH_c-6C
*/ PMZzzZ
public void sort(int[] data) { K%_JQ0`
int temp; I@v.Hqg+7
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3_-m>J**
if(data[j] SortUtil.swap(data,j,j-1); W7>_nK+g?
} %'5 wwl
} 74wa
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} RlIqH;n
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选择排序: o62gLO]z@
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package org.rut.util.algorithm.support; f2f$aZ
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import org.rut.util.algorithm.SortUtil; )A;<'{t #L
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/** 36UWoo
* @author treeroot Yb/^Qk59
* @since 2006-2-2 ^>uGbhBp
* @version 1.0 C.p*mO&N
*/ w=2X[V}
public class SelectionSort implements SortUtil.Sort { w`:KexD+
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/* uS.a9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u?/]"4
*/ 5@5="lNjS
public void sort(int[] data) { N`fY%"5U>
int temp; Fd'L:A~
for (int i = 0; i < data.length; i++) { <h0ptCB
int lowIndex = i; W0hLh<Go
for (int j = data.length - 1; j > i; j--) { cH ?]uu(
if (data[j] < data[lowIndex]) { )~ kb7rfl
lowIndex = j; qIp`'.#m
} EB,>k1IJ
} !{\c`Z<#
SortUtil.swap(data,i,lowIndex); [r'M_foga*
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} ^ jA}*YP
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Shell排序: I`1=VC]^8
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package org.rut.util.algorithm.support; euK!JZ
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import org.rut.util.algorithm.SortUtil; cd#TKmh7re
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/** X_2I4Jz]6
* @author treeroot A+&Va\|x
* @since 2006-2-2 |R;=P(0it
* @version 1.0 D1 z3E;:
*/ fRmc_tx
public class ShellSort implements SortUtil.Sort{ K`3cH6"L6
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/* (non-Javadoc) 4mg&H0 !
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S/aPYrk>6
*/ l.!
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public void sort(int[] data) { Oylw,*%
for(int i=data.length/2;i>2;i/=2){ %yVZ|d*Q
for(int j=0;j insertSort(data,j,i); = %m/
} T@.CwV
} u@Lu.t!],
insertSort(data,0,1); FSk:J~Z;
} X:5*LB\/v
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/** *']RYu?X
* @param data @P>@;S
* @param j C+j+q648>
* @param i LV0{~g(!%
*/ *lSIT]1
private void insertSort(int[] data, int start, int inc) { ;RI,zQ
int temp; e2Dj%=`EU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2UquN0
} 1GxYuTZ{
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} umeb&\:8S-
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快速排序: }sZ]SE
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package org.rut.util.algorithm.support; tz{]H9
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import org.rut.util.algorithm.SortUtil; -rfO"D>
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/** i%iU_`
* @author treeroot 0=iJT4IEJ
* @since 2006-2-2 W~4|Z=f
* @version 1.0 KpL82
*/ xXtDGP
public class QuickSort implements SortUtil.Sort{ 6pse@x?
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/* (non-Javadoc) -e ya$C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8V nZ@*
*/ UJI1n?~
public void sort(int[] data) { RK0IkRXQd
quickSort(data,0,data.length-1); 6lPGop]js]
} Q=[&~^Y)
private void quickSort(int[] data,int i,int j){ FP$]D~DMo
int pivotIndex=(i+j)/2; ]!QeJ'BLM
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SortUtil.swap(data,pivotIndex,j); %rsW:nl
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int k=partition(data,i-1,j,data[j]); S@_GjCpn
SortUtil.swap(data,k,j); ?@#<>7V
if((k-i)>1) quickSort(data,i,k-1); nC w1H kW
if((j-k)>1) quickSort(data,k+1,j); %K%z<R8
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} LQe<mZ<
/** ]=/f`
* @param data _Z%C{~,7)x
* @param i p0/I}n4<5n
* @param j >9DgsA`'
* @return AjpQb~\
*/ 1g@kHq
private int partition(int[] data, int l, int r,int pivot) { lUrchLoDt
do{ rRMC<.=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); YG% Zw
} 0y(d|;':
while(l SortUtil.swap(data,l,r); O/-xkzR*
return l; Y#G '[N>
} q7;)&_'
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改进后的快速排序: 5VI'hxU4Qg
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package org.rut.util.algorithm.support; k3Y>QN|q8
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import org.rut.util.algorithm.SortUtil; y ^YrGz.
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/** l4; LV7Ji
* @author treeroot %n(
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* @since 2006-2-2 jE{z4en
* @version 1.0 q>Y_I<;'g
*/ ?#W>^Za=
public class ImprovedQuickSort implements SortUtil.Sort { OS3J,f}<=
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private static int MAX_STACK_SIZE=4096; (GZm+?
private static int THRESHOLD=10; g\ke,r6
/* (non-Javadoc) ]fR
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +}^
*/ '=oV
public void sort(int[] data) { QF>H>=Za=
int[] stack=new int[MAX_STACK_SIZE]; P<bA~%<7"[
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int top=-1; cu
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int pivot; "k+QDQ3=
int pivotIndex,l,r; *e^ZH
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stack[++top]=0; bBZvL
stack[++top]=data.length-1; JL<}9K
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while(top>0){ h7g9:10
int j=stack[top--]; .AKx8=f
int i=stack[top--]; 3M^ /
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pivotIndex=(i+j)/2; ?)9 6YX'
pivot=data[pivotIndex]; Dj[D|%9a
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SortUtil.swap(data,pivotIndex,j); nkpQM$FW
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file://partition 9AS,-5;XQ
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do{ TiH(HW|:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $u>^A<TBN
SortUtil.swap(data,l,r); U\ 51j
} p{.EFa>H
while(l SortUtil.swap(data,l,r); ?g9CeeH*
SortUtil.swap(data,l,j); [}FP_Su$6
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if((l-i)>THRESHOLD){ \A':}<Rj
stack[++top]=i; K\ZKVn
stack[++top]=l-1; .[~E}O
} ^b&aDm~(7
if((j-l)>THRESHOLD){ 7%aB>uA
stack[++top]=l+1; %F03cI,
stack[++top]=j; py)V7*CgH
} pxP7yJL`
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} z2-=fIr.h
file://new InsertSort().sort(data); @~zhAU!
insertSort(data);
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} JBuorc
/** 1,4kw~tA
* @param data ,"&v