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。 E
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插入排序: {7%HK2='
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package org.rut.util.algorithm.support; L?&&4%%
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import org.rut.util.algorithm.SortUtil; Bx$?*y&f!v
/** Hfo<EB2Y9N
* @author treeroot 0E
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* @since 2006-2-2 q0vZR"y
* @version 1.0 ]A#:Uc5
*/ m^TN6/])
public class InsertSort implements SortUtil.Sort{ ?gvu
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/* (non-Javadoc) co^h2b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U&a(WQV9&
*/ D+~*nc ~
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public void sort(int[] data) { R1<$VR
int temp; +KNd%AJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z*h}E
} Eelv i5
} ssoE ,6kS
} U^U
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} }Ujgd2(U
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冒泡排序: ~3f|-%Z
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package org.rut.util.algorithm.support; pQC|_T#u
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import org.rut.util.algorithm.SortUtil; ~
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/** SB .=x
* @author treeroot e+4Eiv
* @since 2006-2-2 EYCZuJxv
* @version 1.0 bw7g L\*
*/ {9x>@p/
public class BubbleSort implements SortUtil.Sort{ DBLM0*B
nLv~)IQ}:
/* (non-Javadoc) iDhC_F|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M7 kWJ
*/ 8ZM#.yBB
public void sort(int[] data) { .c0u##/0
int temp; d"Wuu1tEY
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8c_X`0jy
if(data[j] SortUtil.swap(data,j,j-1); X-,oL.:c
} o8hE.pf&
} .9,x_\|G*
} 9PV+Kr!c5I
} J2!
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} y;<suGl
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选择排序: <mVFC
Di4GaKa/
package org.rut.util.algorithm.support; @pYC!;n+
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import org.rut.util.algorithm.SortUtil; ]*lZFP~
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/** B$x@I\(M
* @author treeroot 7DoU7I\u
* @since 2006-2-2 m.1-[ 2{8~
* @version 1.0 3;> z %{
*/ ~1twGG_;
public class SelectionSort implements SortUtil.Sort { BnGoB`n
vD?D]8.F~Q
/* .s!0S-RkC
* (non-Javadoc) k<+Sj
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* A|:+c*7]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qBh@^GxY),
*/ 4Y2I'~'
public void sort(int[] data) { x;E/
int temp; UntFkoO
for (int i = 0; i < data.length; i++) { rwP)TJh"
int lowIndex = i; L%Rw]=v}v
for (int j = data.length - 1; j > i; j--) { xU0iz{9
if (data[j] < data[lowIndex]) { 3!fR'L/i
lowIndex = j; Fw{@RQf8
} 5p S$rf
} F8{gJaP x
SortUtil.swap(data,i,lowIndex); ytjZ7J['{
} / Wjc\n$'
} JehanF[
b$fmU"%&|
} *ls6k`ymL
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Shell排序: ,IqE<i!U
<PuY"-`/Oc
package org.rut.util.algorithm.support; 4dCXBTT
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import org.rut.util.algorithm.SortUtil; W)/f5[L
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/** r,0D I
* @author treeroot oST)E5X;7
* @since 2006-2-2 )e`9U.C
* @version 1.0 .d^8?vo
*/ \ moLQ
public class ShellSort implements SortUtil.Sort{ [7gz?9VyLF
0|tyKP|J
/* (non-Javadoc) jLI1Ed
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iJOG"gI&
*/ *<:X3|3E
public void sort(int[] data) { bO/r1W
for(int i=data.length/2;i>2;i/=2){ 8~-TN1H
for(int j=0;j insertSort(data,j,i); vnQFq
}
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} %#v$d
insertSort(data,0,1); 9=]HOUn
} $3>Rw/,
hp2E! C ma
/**
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* @param data TsoxS/MI"
* @param j \9#f:8Q
* @param i BV>9U5
*/ *k,3@_5
private void insertSort(int[] data, int start, int inc) { juWXB+d2Y
int temp; 6c-'CW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >TCit1yD
} 2SD
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} T3
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} XfVdYmii
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} NdLe|L?c
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快速排序: y< dBF[
WR#h~N
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package org.rut.util.algorithm.support; %u&Vt"6m=
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import org.rut.util.algorithm.SortUtil; `V V>AA5
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/** +,)k@OI
* @author treeroot sgK =eBE
* @since 2006-2-2 WeH_1$n5
* @version 1.0 rqN+0CT
*/ n5A|Zjk;
public class QuickSort implements SortUtil.Sort{ }[PwA[k'
@aUNyyVP
/* (non-Javadoc) XZ@+aG_%q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @"fv[=Xb
*/ ?_AX;z
public void sort(int[] data) { e> 9X
quickSort(data,0,data.length-1); 0.R3(O
} |-\anby<
private void quickSort(int[] data,int i,int j){ mMZ{W+"[f
int pivotIndex=(i+j)/2; UQh.o
file://swap 9x4z m
SortUtil.swap(data,pivotIndex,j); jmq^98jB
}15&<s
int k=partition(data,i-1,j,data[j]); _)Txg2?=
SortUtil.swap(data,k,j); jsgDJ}
if((k-i)>1) quickSort(data,i,k-1); 6vNn;-gg.
if((j-k)>1) quickSort(data,k+1,j); LNk :PD0m
b&h'>(
} h+H+>,N8`
/** ceks~[rP
* @param data xu-bn
* @param i #M w70@6
* @param j m2(}$z3e
* @return
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*/ [>p!*%m
private int partition(int[] data, int l, int r,int pivot) { $RI$VyAjD
do{ mGDc,C=5:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vYXh WqL~
SortUtil.swap(data,l,r); V!]|u ^4I
} 8b7I\J`
while(l SortUtil.swap(data,l,r); {_\dwe9
return l; 85|u;Fxf
} /K!f3o+
}I}GA:~$%
} "\;n t5L
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改进后的快速排序: CHqi5Z/+
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package org.rut.util.algorithm.support; PEjd
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import org.rut.util.algorithm.SortUtil; \+U;$.)3
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/** -9+$z|K
* @author treeroot
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* @since 2006-2-2 9{SzE /[
* @version 1.0 s-SFu
*/ e"sv_$*
public class ImprovedQuickSort implements SortUtil.Sort { Z&H_+u3j
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private static int MAX_STACK_SIZE=4096; !JDuVqW
private static int THRESHOLD=10; [N[4\W!!
/* (non-Javadoc) 2'W#x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ~n0Exw(
public void sort(int[] data) { =$^}"}$
int[] stack=new int[MAX_STACK_SIZE]; L?8OWLjRy
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int top=-1; +B+cN[d
int pivot; oGeV!hD
int pivotIndex,l,r; o(v7&m;
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stack[++top]=0; r0&LjH&R
stack[++top]=data.length-1; Mt{cX,DS
^l
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while(top>0){ ~pI`_3
int j=stack[top--]; Ty!V)i
int i=stack[top--]; 6b` Jq>v
"<&o;x<
pivotIndex=(i+j)/2; 8QKu
pivot=data[pivotIndex]; ^pfM/LQ@
/
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SortUtil.swap(data,pivotIndex,j); MD4mh2
XWz~*@ci
file://partition +Ezl.O@z
l=i-1; drwxrZt
r=j; Fo
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do{ =3V4HQi
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b-c6.aKf|
SortUtil.swap(data,l,r); .OW5R*
} >:
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while(l SortUtil.swap(data,l,r); @JP6F[d
SortUtil.swap(data,l,j); [>j.x2=
Cf<TDjU`|
if((l-i)>THRESHOLD){ lY[1P|]
stack[++top]=i; kAxJ#RG
stack[++top]=l-1; D[YdPg@-
} ZiH4s|
if((j-l)>THRESHOLD){ mII8jyg*c
stack[++top]=l+1; X0$?$ta
stack[++top]=j; 3] U/^f3
} 2v*X^2+
{+9t!'
} hNp.%XnnZ
file://new InsertSort().sort(data); ,~K4+
t_
insertSort(data); un,W{*s8*
} 7:.!R^5H
/** 4tapQgj24
* @param data diw5h};W
*/ cf_X=;yaqy
private void insertSort(int[] data) { itO1ROmu
int temp; TjctK [db@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N,cj[6;T%
} K~8!Gh{h]
} ].gC9@C:$i
} V5I xZn%
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} qMBEJ<o
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归并排序: (L<G=XC
Vf(n
package org.rut.util.algorithm.support; $)(Zt^
kr]_?B(r
import org.rut.util.algorithm.SortUtil; OadGwa\:s
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/** bgmOX&`G
* @author treeroot a'\fS7aE0l
* @since 2006-2-2 79M`?xm
* @version 1.0 LS1}j WU!
*/ nyd'79~>G
public class MergeSort implements SortUtil.Sort{ ?eR^\-e
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/* (non-Javadoc) :UsNiR=l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rP&.`m88n
*/ <$'FTv
public void sort(int[] data) { !2]G.|5/A
int[] temp=new int[data.length]; DzvGR)>/
mergeSort(data,temp,0,data.length-1); X]%n#\t,]
} ZCkwK
zeHs5P8}r
private void mergeSort(int[] data,int[] temp,int l,int r){ mINir-
int mid=(l+r)/2; Y3f2RdGl
if(l==r) return ; *s"{JrG`O
mergeSort(data,temp,l,mid); uTUkRqtD!
mergeSort(data,temp,mid+1,r); [6a&9#[A
for(int i=l;i<=r;i++){
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temp=data; e_CgZ
} >c8EgSZJ
int i1=l; jQ?6I1o
int i2=mid+1; c5tCw3$t
for(int cur=l;cur<=r;cur++){ 25`6V>\
if(i1==mid+1) 'd=B{7k@
data[cur]=temp[i2++]; t[ ^68]
else if(i2>r) IqmoWn3
data[cur]=temp[i1++]; FDO$(&
else if(temp[i1] data[cur]=temp[i1++]; |<1
else v`pIovn
data[cur]=temp[i2++]; @,v.Y6Ge
} o%=OBTh_
} WMd5Y`y
+}0/ %5 =1
} keWqL]
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改进后的归并排序: '\.fG\xD
,XNz.+Ov
package org.rut.util.algorithm.support; 'uw=)8t7
}
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import org.rut.util.algorithm.SortUtil; P mgTTI
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/** F%pYnHr<
* @author treeroot bjEm=4FI;
* @since 2006-2-2 PF?tEw_WB
* @version 1.0 +\n8##oAI
*/ IH1
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e
public class ImprovedMergeSort implements SortUtil.Sort { X8 (,
,>_
>|22%YVX
private static final int THRESHOLD = 10; VCZ.{MD
*^q%b/ f
/* )a%kAUNj
* (non-Javadoc) |+Fko8-
* ..xg4V/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h}o7/p
*/ jNa'l<dn]
public void sort(int[] data) { LD~/*
int[] temp=new int[data.length]; _Hn-bp[?>
mergeSort(data,temp,0,data.length-1); Z;bg;@r|
} +84JvOkWi
& A%*sD6
private void mergeSort(int[] data, int[] temp, int l, int r) { ')Drv)L
int i, j, k; Z;6v`;[
int mid = (l + r) / 2; -kVt_
if (l == r) &v\
return; 8e 9ZgC|
if ((mid - l) >= THRESHOLD) 11s*C #
mergeSort(data, temp, l, mid); pPNU0]/
else IO x9".
insertSort(data, l, mid - l + 1); Rs0O4.yi;@
if ((r - mid) > THRESHOLD) INFbj8T
mergeSort(data, temp, mid + 1, r); K(+ ~#$|-~
else V9tG2mLf>
insertSort(data, mid + 1, r - mid); cZ{-h
YM*{^BXp
for (i = l; i <= mid; i++) { *TEgV
temp = data; U&uop$/Cq
} >:s#MwIwm
for (j = 1; j <= r - mid; j++) { yaiw|j`A
temp[r - j + 1] = data[j + mid]; +O 2H":$
} QN!$4 1A?{
int a = temp[l]; =N5~iMorD-
int b = temp[r]; IXaF(2>
for (i = l, j = r, k = l; k <= r; k++) { [J'O5"T
if (a < b) { &>
Myf@
data[k] = temp[i++]; %.
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a = temp; XN@F6Gj
} else { bnb:4?d]
data[k] = temp[j--]; Bw]Y71
b = temp[j]; OaeGukhX&
} qHT_,\l2
} 8{@0p"re@
} L1FTh
h/7m.p]
/** 2m]CmdV^
* @param data 8.S&J6
* @param l {s8v0~
* @param i %s}c#n)N
*/ TC7Rw}jF
private void insertSort(int[] data, int start, int len) { x]~{#pH@<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R/&Ev$:
} PyOj{WX>W
} B:-qUuS?R
} a^U)2{A*f
} Y7TW_[_u
vkFq/+'U
堆排序: {$,t^hd
u@V|13p<
package org.rut.util.algorithm.support; o5NV4=
CK<Wba
import org.rut.util.algorithm.SortUtil; u0&QStI
mBQA~@}
/** R^DZ@[\iV
* @author treeroot qD@]FEw!O
* @since 2006-2-2 N:"S/G>r ;
* @version 1.0 =l7@YCj5c
*/ q%g!TFMg
public class HeapSort implements SortUtil.Sort{ :Pa^/i
=;hz,+
/* (non-Javadoc) yK1@`3@?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]LcCom:]
*/ %25GplMT
public void sort(int[] data) { X+0+}S
MaxHeap h=new MaxHeap(); _6y#?8RMB
h.init(data); FTVV+9.l:
for(int i=0;i h.remove(); V7+fNr]I
System.arraycopy(h.queue,1,data,0,data.length); TBAF_$
} UDBMf2F]
}:04bIaV
private static class MaxHeap{ Y@jO#6R
|`N|S
void init(int[] data){ =tk O^
this.queue=new int[data.length+1]; aR- ?t14
for(int i=0;i queue[++size]=data; r |H 1Yy
fixUp(size); F
gi&CJ8Q
} 9oe=*#Ig1m
} YadG05PDe
8@$`'h^6
private int size=0; dH5 Go9`~R
]AB<OjF1c|
private int[] queue; ^~
95q0hq:
3PLYC}Jq
public int get() { W(gOidKKz
return queue[1]; 5$58z
} ]!um}8!}
jTeHI|b
public void remove() { j
aU.hASj
SortUtil.swap(queue,1,size--); lG1\41ZxB
fixDown(1); o_i N(K
} l;~b:[r
file://fixdown vtA%^~0
private void fixDown(int k) { *eF'<._[U
int j; (9]8r2|.
while ((j = k << 1) <= size) { eBZ94rA]
if (j < size %26amp;%26amp; queue[j] j++; <n;9IU
if (queue[k]>queue[j]) file://不用交换 |ee A>z"I
break; &1 BACKu
SortUtil.swap(queue,j,k); b] 5i`
k = j; +u[^@>_I0
} d,5,OJY2f
} X_\$hF
private void fixUp(int k) { +jPJv[W
while (k > 1) { L2Vj2o"x?
int j = k >> 1; 2]UwIxzR
if (queue[j]>queue[k]) >d9b"T
break; _?I6[Mz
SortUtil.swap(queue,j,k); p=d,kY
k = j; zMg(\8
} H#+2l?D:"
} %(X^GL
B>kVJK`X
} u[<ij
Fy#7<Hp
} Xt%y>'.
>4^,[IO/
SortUtil: N?{.}-Q
nw
package org.rut.util.algorithm; wqasI@vyu
kZK1{
import org.rut.util.algorithm.support.BubbleSort; :5#iVa#<
import org.rut.util.algorithm.support.HeapSort; ?X'l&k>
import org.rut.util.algorithm.support.ImprovedMergeSort; <ht^Ck
import org.rut.util.algorithm.support.ImprovedQuickSort; -d]v6q'1
import org.rut.util.algorithm.support.InsertSort; 3n)\D<f]#
import org.rut.util.algorithm.support.MergeSort; 9zD,z+
import org.rut.util.algorithm.support.QuickSort; "+Kp8n6
import org.rut.util.algorithm.support.SelectionSort; 89YG
`
import org.rut.util.algorithm.support.ShellSort; rNl%I@G
Srom@c
/** cR6Rb[9 N
* @author treeroot eAK=ylF;
* @since 2006-2-2 FwpTQix!
* @version 1.0 lhBu?q
*/ x4CSUcKb
public class SortUtil { p7p6~;P
public final static int INSERT = 1; Ewa/6=]LA
public final static int BUBBLE = 2; G7YBo4v
public final static int SELECTION = 3; /_V4gwb}|-
public final static int SHELL = 4; GDwijZw
public final static int QUICK = 5; d:g0XP
public final static int IMPROVED_QUICK = 6; l:14uWu|
public final static int MERGE = 7; tKCX0UZ'
public final static int IMPROVED_MERGE = 8; *@fVog r^
public final static int HEAP = 9; o(@^V!}V
_m#P\f'p
public static void sort(int[] data) { )P#xny2
sort(data, IMPROVED_QUICK); UW],9r/PD@
} $p\ 0/
private static String[] name={ ,F?O} ijk
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" . sv
uXB
}; y:VY8a 4
t/c)[l hV
private static Sort[] impl=new Sort[]{ p sAr>:\3
new InsertSort(), {KqERS&
g
new BubbleSort(), <xwaFZ
new SelectionSort(), ;*>':-4
new ShellSort(), iz:O]kI
new QuickSort(), 8C5*: x9l
new ImprovedQuickSort(), N3&n"w _d
new MergeSort(), f"d4HZD^
new ImprovedMergeSort(), g*$yUt
new HeapSort() O/lu0acI
}; f=Kt[|%'e
FK,Jk04on
public static String toString(int algorithm){ vve[.Lud'
return name[algorithm-1]; pTE.,~-J^j
} [OwrIL
Z]k+dJ[-
public static void sort(int[] data, int algorithm) { Q_FL8w9D~8
impl[algorithm-1].sort(data); .!Q?TSQ+{!
} >5bd!b,
k^Uk=)9
public static interface Sort { 7=@MnF`
public void sort(int[] data); W4rh7e4
} q Qc-;|8
.ot[_*A.FD
public static void swap(int[] data, int i, int j) { 'Q4V(.
int temp = data; @EGUQ|WL^
data = data[j]; r]O8|#P,Z$
data[j] = temp; =d1R9O
} Y%YPR=j~ &
} R\>=}7