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。 `74A'(u_
插入排序: JIK;/1
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package org.rut.util.algorithm.support; <.Pr+g
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import org.rut.util.algorithm.SortUtil; $"sf%{~
/** <jV_J+#
* @author treeroot mI}'8.
* @since 2006-2-2 /<GygRs
* @version 1.0 .Emw;+>
*/ )5hS;u&b
public class InsertSort implements SortUtil.Sort{ @}#$<6|
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y>|7'M*+
*/ # *\PU
public void sort(int[] data) { dq[CT
int temp; N1_nBQF )
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^/c&Ud
} =8[HC}s|$
} aVd{XVE
} ~W!sxM5(*
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} O0wD"V^W
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冒泡排序: I( pU_7mw
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package org.rut.util.algorithm.support; kpEES{f
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import org.rut.util.algorithm.SortUtil; xEGI'lt
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/** 7|\[ipVX:3
* @author treeroot `XQM)A
* @since 2006-2-2 74QWGw`,
* @version 1.0 n
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*/ iz>a0~(K
public class BubbleSort implements SortUtil.Sort{ pS9CtQqvgy
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/* (non-Javadoc) G.1pg]P!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M++*AZ
*/ A-uEZj_RD=
public void sort(int[] data) { r'-)@|
int temp; LDO@$jg
for(int i=0;i for(int j=data.length-1;j>i;j--){ s>^*GQw
if(data[j] SortUtil.swap(data,j,j-1); (Zx;GS
} zkB_$=sbn#
} SxNs
} ^qGH77#z
} #|)GarDG
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} J=5G<
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选择排序: 9_oIAn:<
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package org.rut.util.algorithm.support; -_v[oqf$
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import org.rut.util.algorithm.SortUtil; P6dIU/w
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/** (:-=XR9A`
* @author treeroot yin"+&<T
* @since 2006-2-2 }B^KV#_{S
* @version 1.0 L9&Z?$6J_p
*/ W%@6D|^
public class SelectionSort implements SortUtil.Sort { |v:8^C7
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/* $D1Pk
* (non-Javadoc) *[k7KG2_U
* _"Y;E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (WX,&`a<$
*/ dyD=R
public void sort(int[] data) { I"y=A7Nq
int temp; OiZPL" Q(K
for (int i = 0; i < data.length; i++) { -(@dMY
int lowIndex = i; hBOI:4u[
for (int j = data.length - 1; j > i; j--) { &K|<7Efx
if (data[j] < data[lowIndex]) { oe# :EfT
lowIndex = j; 8 }nA8 J
} }r9f}yX9Q
} 3;@t{rIin
SortUtil.swap(data,i,lowIndex); 6(VCQ{
} iE0A-;:5
} y;3vr1?
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} G/bWn@
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Shell排序: hT#[[md"
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package org.rut.util.algorithm.support; 48Z{wV,
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import org.rut.util.algorithm.SortUtil; LEKN%2
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/** s'J8E+&5
* @author treeroot `b+f^6SJn
* @since 2006-2-2 Q9]7.^l
* @version 1.0 J#!:Z8b
*/ eOE7A'X
public class ShellSort implements SortUtil.Sort{ P
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/* (non-Javadoc) H'P1EZtq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z<hy#BIjnd
*/ [}N?'foLb
public void sort(int[] data) { ]+{Cy\*kR
for(int i=data.length/2;i>2;i/=2){ bo4 :|Z
for(int j=0;j insertSort(data,j,i); ebcGdC/%>
} cL7je
} t=d~\_Oa
insertSort(data,0,1); >| rID
} _A;jtS)SY
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/** ]Jq1b210
* @param data eh&? BP?
* @param j o5-oQ_j
* @param i !FX;QD@"
*/ *}$T:kTH
private void insertSort(int[] data, int start, int inc) {
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int temp; 50F6jj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C7[_#1Oz
} TwqyQ49
} ]3BTL7r
} .R#p<"$I
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} (dLt$<F
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快速排序: pej/9{*xg(
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package org.rut.util.algorithm.support; ?kI-o0@O.
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import org.rut.util.algorithm.SortUtil; N4}j,{#
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/** U@@#f;&
* @author treeroot Nq/,41
* @since 2006-2-2
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* @version 1.0 H 0aDWFWS
*/ ~*GJO74
public class QuickSort implements SortUtil.Sort{ Zz'(!h Uy
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/* (non-Javadoc) Xw(e@:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z2_eTC
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*/ ),(ejRP'r
public void sort(int[] data) { cZuZfMDM
quickSort(data,0,data.length-1); 4_ztIrw
} !h4S`2oZ/
private void quickSort(int[] data,int i,int j){ q.yS j
int pivotIndex=(i+j)/2; (`5No:?v<
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SortUtil.swap(data,pivotIndex,j); |FHeT*"
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int k=partition(data,i-1,j,data[j]); I,(m\NalK
SortUtil.swap(data,k,j); 5?r#6:(yI
if((k-i)>1) quickSort(data,i,k-1); @Kd1|K
if((j-k)>1) quickSort(data,k+1,j); )l[<3<@s
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} bIu'^
/** >Vy=5)/i
* @param data
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* @param i QrDzfe[
* @param j Kn SXygT
* @return QXY-?0RO#
*/ ]tA39JK-i
private int partition(int[] data, int l, int r,int pivot) { 1mm/Ssw:C
do{ OmQSNU.our
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UO47XAO
SortUtil.swap(data,l,r); TG8QT\0G
} UTGR{>=>
while(l SortUtil.swap(data,l,r); OkGg4X|9
return l; 8 k9(iS
} G(~d1%(
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} " ^u
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改进后的快速排序: ?7 e|gpQ|
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package org.rut.util.algorithm.support; uc<XdFcu
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import org.rut.util.algorithm.SortUtil; Q.7Rv
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/** FY)v rM*yh
* @author treeroot w|pk1~c(_
* @since 2006-2-2 PX65Z|~>_
* @version 1.0
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*/ 0APwk
}
public class ImprovedQuickSort implements SortUtil.Sort { L MC-1
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private static int MAX_STACK_SIZE=4096; zNofI$U
private static int THRESHOLD=10; 3Bee6N>
/* (non-Javadoc) &F1h3q)L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8W)3rD>
*/ }00mJ]H(
public void sort(int[] data) { 7Te`#"
int[] stack=new int[MAX_STACK_SIZE]; C(Ujx=G+3
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int top=-1; j*t>CB4
int pivot; r5%K2q{
int pivotIndex,l,r; #F@53N
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stack[++top]=0; !/znovoD
stack[++top]=data.length-1; D-\\L[
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while(top>0){ ]|18tVXc
int j=stack[top--]; zDeh#
int i=stack[top--]; x tg3~/H
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pivotIndex=(i+j)/2; V|zzj[c
pivot=data[pivotIndex]; I gcVl/d
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SortUtil.swap(data,pivotIndex,j); b)9bYkd
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l=i-1; S!A)kK+
r=j; Zy,U'Dv
do{ A\ds0dUE
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !;.i#c_u
SortUtil.swap(data,l,r); } R!-*Wk
} 8fFURk
while(l SortUtil.swap(data,l,r); 9_V'P]@
SortUtil.swap(data,l,j); ..V6U"/
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if((l-i)>THRESHOLD){ #x$.
stack[++top]=i; o)F^0t
stack[++top]=l-1; 8~AO~
} $J"}7+
if((j-l)>THRESHOLD){ jo{[*]Oa
stack[++top]=l+1; ~j}di^<{
stack[++top]=j; dy N`9
} \2 &)b
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} }C!N$8d,
file://new InsertSort().sort(data); lfG]^id'
insertSort(data); tX$%*Uy
} #X'!wr|-
/** P0uUVU=B|
* @param data Sq8 `)$\
*/ EzqYHY+_r
private void insertSort(int[] data) { zm4Okg)w@
int temp; li;Np5P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +RQlMAB
} -1d2Qed
} Bi/=cI
} 4]0|fi3}>
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} 9$8B)x
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归并排序: Zm,<