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。 b4 6~?*
插入排序: dFB]~QEK
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package org.rut.util.algorithm.support; JG rWHIsNV
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import org.rut.util.algorithm.SortUtil; "%w u2%i
/** s/#!VnU6
* @author treeroot By!o3}~g
* @since 2006-2-2 cKI9#t_
* @version 1.0 VscE ^'+
*/ zR:L!S
public class InsertSort implements SortUtil.Sort{ F@KGj|
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/* (non-Javadoc) ""G'rN_=Bi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .uZ3odMlx
*/ oJz^|dW
public void sort(int[] data) { \!ZTL1b8t
int temp; JX;G<lev
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QA`sx
} aeJHMHFc
} YK'<NE3 4
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} |0b`fOS
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冒泡排序: kgP0x-Ap
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package org.rut.util.algorithm.support; f}P3O3Yv&
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import org.rut.util.algorithm.SortUtil; Bnxm HGP#&
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/** gR;i(81U
* @author treeroot r`d4e,(
* @since 2006-2-2 \ ~$#1D1f
* @version 1.0 :4/3q|cn
*/ &j"?\f?
public class BubbleSort implements SortUtil.Sort{ db7B^|Di
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/* (non-Javadoc) L#sMSVC+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :DNY7TvZ
*/ 0S!K{xyR
public void sort(int[] data) { ,#9PxwrO
int temp; @qAS*3j
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;?p>e'
if(data[j] SortUtil.swap(data,j,j-1); V**~m9f
} VU3upy<
} $<EM+oJ|ER
} p_%Rt"!
} 8(~h"]`!
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} H<,gU`&R
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选择排序: iqWQ!r^
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package org.rut.util.algorithm.support; 6LIJQ
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import org.rut.util.algorithm.SortUtil; Kn1a>fLaJ_
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/** ] (8[}CeL
* @author treeroot OQJ6e:BGt
* @since 2006-2-2 -FaJ^CN~
* @version 1.0 %>{0yEC
*/ Tyx_/pJT
public class SelectionSort implements SortUtil.Sort { /82b S|
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/* &V/MmmT
* (non-Javadoc) *z8\Lnv~k
* k5pN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u^ ~W+
*/ eeB{c.#
public void sort(int[] data) { uKHxe~
int temp; DB}eA N/
for (int i = 0; i < data.length; i++) { 4H&+dRI"
int lowIndex = i; eng'X-x
for (int j = data.length - 1; j > i; j--) { +23xev
if (data[j] < data[lowIndex]) { jNk%OrP]
lowIndex = j; L4nYXW0y
} VMWf>ZU
} pW3^X=6
SortUtil.swap(data,i,lowIndex); 6j}9V
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} 4,DeHJjAlE
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} v.qrz"98-
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Shell排序: %EB/b
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; >z@0.pN]7
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/** S)@j6(HC4
* @author treeroot sQZhXaMa $
* @since 2006-2-2 9G2FsM|,
* @version 1.0 Cw&KVw*
*/ G"A#Q"
public class ShellSort implements SortUtil.Sort{ xJ.M;SF4
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/* (non-Javadoc) IH+|}z4N?>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UkFC~17P
*/ Z,PPu&lmE/
public void sort(int[] data) { nqUV
for(int i=data.length/2;i>2;i/=2){ Zj'9rXhrM1
for(int j=0;j insertSort(data,j,i);
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} 'm$L Ij?@
} DN6Mo<H
insertSort(data,0,1); #%O0[kd
} l.M0`Cn-%
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/** f3y=Wxk[
* @param data c-sfg>0 ^
* @param j 5Gm_\kd
* @param i c7H^$_^ =
*/ }0y"F
private void insertSort(int[] data, int start, int inc) { |`FY1NN
int temp; ]7A'7p$Y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !j-Z Lq:;
} G 01ON0
} hM!a_'
} 5|)W.*Q
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} cH2K )~
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快速排序: 6_B]MN!(
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package org.rut.util.algorithm.support; ~a2}(]
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import org.rut.util.algorithm.SortUtil; Zv{'MIv&v
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/** CWKm(@"5
* @author treeroot (/$^uWj
* @since 2006-2-2 {P-):
* @version 1.0 ~&uHbTq
*/ |Y.?_lC
public class QuickSort implements SortUtil.Sort{ {M)Nnst"~
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/* (non-Javadoc) 'Pbr
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #5uOx(>
*/ uXiN~j &Be
public void sort(int[] data) { #O&8A
quickSort(data,0,data.length-1); Pg{J{gn
} m]&SN z=
private void quickSort(int[] data,int i,int j){ t6t!t*jO
int pivotIndex=(i+j)/2; |N] XJ)?
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SortUtil.swap(data,pivotIndex,j); C,eu9wOT
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int k=partition(data,i-1,j,data[j]); 7t3!)a|lI
SortUtil.swap(data,k,j); k}rbim
if((k-i)>1) quickSort(data,i,k-1); }6ldjCT/,
if((j-k)>1) quickSort(data,k+1,j); Vjpy~iP4B
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} 7xR\kL.,
/** _#8MkW#]~
* @param data "J1
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* @param i "r2 r
* @param j 2fS:-
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* @return \b>]8Un"
*/ ~VB1OLgv#.
private int partition(int[] data, int l, int r,int pivot) { ?q [T
do{ 5:?!=<=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J.%IfN
SortUtil.swap(data,l,r); \{D"
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} 7j{?aza
while(l SortUtil.swap(data,l,r); ),!qTjD
return l; B-mowmJ3dg
} )U#K
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} _"{Xi2@H
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改进后的快速排序: {4PwLCy
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package org.rut.util.algorithm.support; !n%j)`0M
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import org.rut.util.algorithm.SortUtil; z@j8lv2j1
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/** rT>wg1:
* @author treeroot Alq(QDs
* @since 2006-2-2 @}ZVtrz
* @version 1.0 L RF103nw
*/ "Y.y:Vv;
public class ImprovedQuickSort implements SortUtil.Sort { OZ&o:/*HM
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private static int MAX_STACK_SIZE=4096; H"F29Pu2
private static int THRESHOLD=10; V~ _>U}
/* (non-Javadoc) #LNED)Vg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _VXN#@y
*/ }GIt!PG
public void sort(int[] data) { *K;~!P
int[] stack=new int[MAX_STACK_SIZE]; `0R./|bv\I
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int top=-1; d"Y{UE
int pivot; yCo.cd-
int pivotIndex,l,r; d d;T-wa}
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stack[++top]=0; P'rb%W
stack[++top]=data.length-1; @%SQFu@FJ
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while(top>0){ 6H|S;K+
int j=stack[top--]; { xB3S_,8
int i=stack[top--]; sR8"3b<qA
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pivotIndex=(i+j)/2; g\AY|;T
pivot=data[pivotIndex]; M3Kfd
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SortUtil.swap(data,pivotIndex,j); B7%U_F|m
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file://partition _vZOZKS+
l=i-1; IGN1gs
r=j; B/C,.?Or
do{ ,+ ~W4<f
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I}Q2Vu<
SortUtil.swap(data,l,r); J=yTbSN\v
} =\d?'dII:
while(l SortUtil.swap(data,l,r); Xm&L
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SortUtil.swap(data,l,j); \`"ht
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if((l-i)>THRESHOLD){ w*Ihk)
stack[++top]=i; .e5Mnd%$M
stack[++top]=l-1; 2"~8Z(0
} :Qq#Z
if((j-l)>THRESHOLD){ }1xo-mUg,
stack[++top]=l+1; ?fS9J
stack[++top]=j; ^C%<l(b
} B-ESFATc
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} -Qe Z#w|
file://new InsertSort().sort(data); 2+O'9F_v
insertSort(data); Wez5N
} O'~+_ykTl
/** hzC>~Ub5
* @param data PRT +mT
*/ Aa]"
private void insertSort(int[] data) { t:c.LFrF
int temp; -.3w^D"l
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mcok/,/
} L8n|m!MOD
} y_9Ds>p!T
} 6zn5UW#q
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} ze;KhUPRm
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归并排序: jq-_4}w?C
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package org.rut.util.algorithm.support; y3ikWnx
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import org.rut.util.algorithm.SortUtil; Qei"'~1a
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/** RGX=)
* @author treeroot "*H`HRi4T
* @since 2006-2-2 h7 I{
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* @version 1.0 E!AE4B1bd
*/ c:g'.'/*
public class MergeSort implements SortUtil.Sort{ 8i,K~Bu=
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/* (non-Javadoc) 0?M:6zf_iv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [8*)8jP3
*/ Xx(T">]vJ
public void sort(int[] data) { {BHO/q3
int[] temp=new int[data.length]; [SW_C
mergeSort(data,temp,0,data.length-1); ]s748+
} lHIM}~#;nd
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private void mergeSort(int[] data,int[] temp,int l,int r){ v9UD%@tZ
int mid=(l+r)/2; :j`sr
if(l==r) return ; ~v"L!=~G;a
mergeSort(data,temp,l,mid); FCn_^l)EA
mergeSort(data,temp,mid+1,r); Tb-F]lg$
for(int i=l;i<=r;i++){ -`t^7pr
temp=data; snikn&
} i 3SHg\~Z
int i1=l; 2:=
int i2=mid+1; m#F`] {
for(int cur=l;cur<=r;cur++){ &t-kpA|EG
if(i1==mid+1) ---N9I
data[cur]=temp[i2++]; f
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else if(i2>r) YnP5i#"
data[cur]=temp[i1++]; cs'{5!i]
else if(temp[i1] data[cur]=temp[i1++]; wa3}SB
else OUXR
data[cur]=temp[i2++]; rXU\
} ?R#)1{(8d~
} Xs?o{]Fe
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