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。 a~}OZ&PG
插入排序: !)0;&e5
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package org.rut.util.algorithm.support; .j0$J\:i
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import org.rut.util.algorithm.SortUtil; "7F?@D$e
/** 7'V@+5
* @author treeroot [!#L6&:a8
* @since 2006-2-2 X51:
* @version 1.0 N
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*/ | rtD.,m
public class InsertSort implements SortUtil.Sort{ Vaw+.sG`AP
P* BmHz4KL
/* (non-Javadoc) k)=s>&hl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 051E6-
*/ Zt{[*~
public void sort(int[] data) { ~-Qw.EdC
int temp; @,my7?::oM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {Gk1vcq
} 29] G^f>
} 0-Ku7<a
} >jLY"
G}raA%
} |3"KK
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冒泡排序: _8UU'1d
#f]SK[nR
package org.rut.util.algorithm.support; `mJ6K&t$<
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import org.rut.util.algorithm.SortUtil; rw JIx|(
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/** 8wFJ4v3
* @author treeroot >SHhAEF
* @since 2006-2-2 Am|%lj+1z
* @version 1.0 j6 z^Tt12
*/ Cnh \%OW
public class BubbleSort implements SortUtil.Sort{ YPk fx
7[XRd9a5(
/* (non-Javadoc) =-n}[Y}A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bK&+5t&
*/ y_-0tI\J
public void sort(int[] data) { &}B|"s[
int temp; c`w}|d]mC
for(int i=0;i for(int j=data.length-1;j>i;j--){ $uVHSH5l
if(data[j] SortUtil.swap(data,j,j-1); JL{VD
/f
} 7~.9=I'A
} y766;
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} Fywv
} uz
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c 3)jccWTc
} s9DYi~/,
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选择排序: <6 Uf.u`
}00BllJ
package org.rut.util.algorithm.support; ,R*
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import org.rut.util.algorithm.SortUtil; M-Y_ Wb3
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/** ?J~_R1Z
* @author treeroot 12 gU{VD
* @since 2006-2-2 v;D~Pa
* @version 1.0 ?J>
*/ $}<e|3_
public class SelectionSort implements SortUtil.Sort { _g"<UV*H
P8/0H(,
/* 7Kxp=-k
* (non-Javadoc) T'Dv.h
* wgGl[_)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d)Y}>@:W
*/ \d`h/tHk
public void sort(int[] data) { t&e{_|i#+
int temp; p947w,1![
for (int i = 0; i < data.length; i++) { 5#E`=C%
int lowIndex = i; D_zZXbNc
for (int j = data.length - 1; j > i; j--) { bq0zxg%
if (data[j] < data[lowIndex]) { ml
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lowIndex = j; ~q25Yx9W@
} @_}P-h
} LyFN.2qw
SortUtil.swap(data,i,lowIndex); ' %o#q6O
} O)r4?<Q
} ^SrJu:Q_
IyG}H}
} *VxgARIL
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Shell排序: n,WqyNt*
Yr[\|$H5
package org.rut.util.algorithm.support; ge8ZsaiU
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import org.rut.util.algorithm.SortUtil; a<bwzX|.
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/** Z"fJ`--
* @author treeroot YS"=yye3e
* @since 2006-2-2 0YDR1dO(*
* @version 1.0 nZYBE030
*/ ^^D0^k!R
public class ShellSort implements SortUtil.Sort{ 7WZ+T"O{I
o0KL5].
/* (non-Javadoc) @|YH|/RF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [MY|T<q
*/ r\^b(rNe
public void sort(int[] data) { -e:`|(Mo
for(int i=data.length/2;i>2;i/=2){ &^Q/,H~S
for(int j=0;j insertSort(data,j,i); l2Rb\4
} y?4BqgB
} A2Gevj?F$
insertSort(data,0,1); g]0_5?i
} cyz3,3\e
@E|}Y
/** #KZBsa@p
* @param data \bw2u!
* @param j A~70
* @param i U # qK.
*/ j&qub_j"xX
private void insertSort(int[] data, int start, int inc) { %1+4_g9
int temp; ~Z'?LV<t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /mzlH
} EXqE~afm2
} l+^*LqEW2
} {"KMs[M
92oFlEJ
} 8KzkB;=n
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快速排序: e+fN6v5pU
C$`tbq
package org.rut.util.algorithm.support; ' S/gmn
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import org.rut.util.algorithm.SortUtil; x7 ,5
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/** .(k|wX[Fu~
* @author treeroot { 2f-8Z&>
* @since 2006-2-2 9_/:[N6|c|
* @version 1.0 SOA,kwHRe
*/ Ab.(7GFK
public class QuickSort implements SortUtil.Sort{ A|{(/G2*
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/* (non-Javadoc) BnF^u5kv %
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }i&/G+_
*/ dioGAai'
public void sort(int[] data) { mj7#&r,1l
quickSort(data,0,data.length-1); 1T
n}
} 0?|<I{z2
private void quickSort(int[] data,int i,int j){ wi{3/
int pivotIndex=(i+j)/2; Dk5 1z@
file://swap &s>Jb?_5Mx
SortUtil.swap(data,pivotIndex,j); h^P#{W!e\
5146kp|1
int k=partition(data,i-1,j,data[j]); 2=!RQv~%
SortUtil.swap(data,k,j); /&JT~M
if((k-i)>1) quickSort(data,i,k-1); KLk~Y0$:v
if((j-k)>1) quickSort(data,k+1,j); t\O16O7S
}4X0epPp;:
} xxQ;xI0+]
/** $M:*T.3
* @param data )NT*bLRPQ
* @param i 1s;Saq+
* @param j |CbikE}kL
* @return ?:eV%`7
*/ as=fCuJ
private int partition(int[] data, int l, int r,int pivot) { lPAQ3t!,
do{ Zx>=tx}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q22 GIr
SortUtil.swap(data,l,r); 9}
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} ` 5>b:3
while(l SortUtil.swap(data,l,r); +jgSV.N
return l; hOK8(U0
} n~Lt\K:
)D%~`,#pQ
} WUTowr
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改进后的快速排序: u9p$YJ
j![\& z
package org.rut.util.algorithm.support; ql~J8G9
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import org.rut.util.algorithm.SortUtil; e&>2
n
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/** 3o/[t
* @author treeroot :[d9tm
* @since 2006-2-2 /G`]=@~
* @version 1.0 ZWm6eD
*/ xN'I/@ kb
public class ImprovedQuickSort implements SortUtil.Sort { a?oI>8*
&uVnZ@o42
private static int MAX_STACK_SIZE=4096; RT8 ?7xFc
private static int THRESHOLD=10; G^@5H/)
/* (non-Javadoc) 9W);rL|5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M
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*/ AQ^u
public void sort(int[] data) { +
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int[] stack=new int[MAX_STACK_SIZE]; b\,+f n
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int top=-1; )Q JUUn#
int pivot; (**oRwr%
int pivotIndex,l,r; ]eV8b*d6
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stack[++top]=0; 'Z]w^<
stack[++top]=data.length-1; g0E'g
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while(top>0){ :rP=t ,
int j=stack[top--]; asqV~n
int i=stack[top--]; 9A#i_#[R
iN.n8MN=I
pivotIndex=(i+j)/2; $<OD31T
pivot=data[pivotIndex]; y>ktcuML
eszG0Wu
SortUtil.swap(data,pivotIndex,j); 43 :X,\~)
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file://partition 1B\WA8
l=i-1; 0tJZ4(0
r=j; _t ycgq#
do{ BFt> 9x]T
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o#N+Y?O
SortUtil.swap(data,l,r); @'|~v<<WZ
} 6wg^FD_Q
while(l SortUtil.swap(data,l,r); f?)-}\[IR{
SortUtil.swap(data,l,j); @E8+C8'
HE\K@3-
if((l-i)>THRESHOLD){ UGatWj
stack[++top]=i; $Ygue5{c
stack[++top]=l-1; A?0Nm{O;3v
} O33`+UV"W
if((j-l)>THRESHOLD){ &9>vl*
stack[++top]=l+1; %]7d`/
stack[++top]=j; &,)&%Sg[
} onV>.7sG
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go
} Y|/ 8up
file://new InsertSort().sort(data); VS|2|n1<6
insertSort(data); DIUjn;>k8
} o,wUc"CE
/** 7mfS*aCb
* @param data 'E.w=7z&
*/ f<6lf7qzC
private void insertSort(int[] data) { /<BI46B\
int temp; *n"{J(Jt`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d0 /#nz
} ll?X@S
} (Awm9|.{+
} |+"(L#wk
a09<!0Rp
} y~HP>~Oh
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归并排序: `wU!`\
XB5DPx
package org.rut.util.algorithm.support; \.}c9*)
x$(f7?s] 1
import org.rut.util.algorithm.SortUtil; HtYwEj I
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/** 6d~'$<5on
* @author treeroot n._-!
WI
* @since 2006-2-2 N4HqLh23H
* @version 1.0 @|T'0_'
*/ Z$? #
public class MergeSort implements SortUtil.Sort{ ^d73Ig:8q
kAGBdaJ"
/* (non-Javadoc) Jfl!#UAD|n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6-ils3&
*/ <=C?e<Y
public void sort(int[] data) { @=f\<"$vt
int[] temp=new int[data.length]; t.C5+^+%
mergeSort(data,temp,0,data.length-1); <
FAheE+
} {+ b7sA3
p{dj~ &v
private void mergeSort(int[] data,int[] temp,int l,int r){ /z $u]X
int mid=(l+r)/2; ,"79P/C
if(l==r) return ; XRQ4\bMA8
mergeSort(data,temp,l,mid); 1yY0dOoLG)
mergeSort(data,temp,mid+1,r); S`Rs82>
for(int i=l;i<=r;i++){ [=`q>|;pOv
temp=data; hK|Ul]qI
} 8Xs8A.
int i1=l; I1&aM}y{G
int i2=mid+1; MnW+25=N
for(int cur=l;cur<=r;cur++){ k$}fWR
if(i1==mid+1) #A8sLkY
data[cur]=temp[i2++]; *}W_+qo"
else if(i2>r) 8*a&Jl
data[cur]=temp[i1++]; `~q <N
else if(temp[i1] data[cur]=temp[i1++]; Yu2Bkq+
else ht}wEvv
data[cur]=temp[i2++]; uFga~g
} #gw]'&{8D
} /;
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IV)j1
} jmW7)jT8:
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改进后的归并排序: +X]vl=0
7"D.L-H
package org.rut.util.algorithm.support; BTrn0
;i+#fQO7Q
import org.rut.util.algorithm.SortUtil; 8DaL,bi*.
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/** o2\8OxcA
* @author treeroot R@rBEW&
* @since 2006-2-2 d m%8K6|
* @version 1.0 ;i:d+!3XwC
*/ QkC(uS
public class ImprovedMergeSort implements SortUtil.Sort { q'MZ R'<@
;gr9/Vl
private static final int THRESHOLD = 10; X!g#T9kG
Uf+%W;}
/* Q&bM\;Ml
* (non-Javadoc) ]e@Oiq
* Pk)1WK7E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -A!%*9Z
*/ 7Hu3>4<
public void sort(int[] data) {
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int[] temp=new int[data.length]; jEJT-*I1+
mergeSort(data,temp,0,data.length-1); uM6+?A9@l
} k"w"hg&e
jo@J}`\Zt
private void mergeSort(int[] data, int[] temp, int l, int r) { 0:d_Yv,D
int i, j, k; 8)I^ t81
int mid = (l + r) / 2; H$4:lH&(
if (l == r) *~i
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return; /&94 eC
if ((mid - l) >= THRESHOLD) ,zY$8y]
mergeSort(data, temp, l, mid); lHX72s|V
else 8}UIbF
insertSort(data, l, mid - l + 1); b|W=pSTY
if ((r - mid) > THRESHOLD) pz>>)c`
mergeSort(data, temp, mid + 1, r); 4HA<P6L
else A3@6N(
insertSort(data, mid + 1, r - mid); *;*r8[U}q
a:6m7U)P#5
for (i = l; i <= mid; i++) { d6 5L!4
temp = data; 5XBH$&Td
} V "h
+L7T
for (j = 1; j <= r - mid; j++) { @;RXLq/8
temp[r - j + 1] = data[j + mid]; V~5jfcd
} aw42oLk
int a = temp[l]; }`~+]9<
int b = temp[r]; ^J;bso`
for (i = l, j = r, k = l; k <= r; k++) { }pu27F)&
if (a < b) { LFtt gY
data[k] = temp[i++]; %bfQ$a:
a = temp; [q #\D
} else { C~iL3Cb
data[k] = temp[j--]; Dm<A
^u8
b = temp[j]; n6a`;0f[R
} kW&TJP+5*
} [IhYh<i
} pIX`MlBdF
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/** *!7O~yQ
* @param data d-dEQKI?;
* @param l N<injx
* @param i e**qF=HCw
*/ [HZv8HU|
private void insertSort(int[] data, int start, int len) { 6,{$J
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0KOgw*>_
} /s}}&u/
} G<v&4/\p`M
} ~M4;
} ,nDaqQ-C!!
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堆排序: YcpoL@ab
;;N9>M?b
package org.rut.util.algorithm.support; OpYY{f
I9hK }D
import org.rut.util.algorithm.SortUtil; kpN)zxfk
%OOl'o"V{s
/** _zi|
* @author treeroot WEi2=3dV
* @since 2006-2-2 @2 fg~2M1
* @version 1.0 E09:E
*/ v
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public class HeapSort implements SortUtil.Sort{ 0.k7oB;f(@
7%eK37@u
/* (non-Javadoc) SKsKPqz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wD'SPk5S?
*/ 'AH0ww_)n
public void sort(int[] data) { DN5 7p!z
MaxHeap h=new MaxHeap(); o:Sa,
!DK
h.init(data); &FN.:_E
for(int i=0;i h.remove(); ckE-",G
System.arraycopy(h.queue,1,data,0,data.length); _>X+ZlpU:
} 0^K">
eV?2LtT#5
private static class MaxHeap{ Zba2d,8/
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void init(int[] data){ RdRp.pb8
this.queue=new int[data.length+1]; l]l'4@1
for(int i=0;i queue[++size]=data; 338k?nHxv
fixUp(size); U#WF;q0L
} l)l^[2
} _.Uh)-yR
%aVq+kC h
private int size=0; +OWX'~fd<
'kO!^6=4M
private int[] queue; lp%pbx43s
.jjG(L
public int get() { ~%kkeh\j
return queue[1]; P:MT*ra*,
} t=W}SH
mSl.mi(JiZ
public void remove() { |imM#wF
SortUtil.swap(queue,1,size--); hy"\RW
fixDown(1); 0[?Xxk}s0
} ?QdWrE_
file://fixdown aQ\$A`?
private void fixDown(int k) {
57
int j; [~c|mOk
while ((j = k << 1) <= size) { fN1-d&T
if (j < size %26amp;%26amp; queue[j] j++; LIF7/$,0
if (queue[k]>queue[j]) file://不用交换 )W
_v:?A9
break; 68C%B9.b'
SortUtil.swap(queue,j,k); |"CZ T#
k = j; nazZ*lC
} Gm^U;u}=f
} q ,]L$
private void fixUp(int k) { Zw
S F^
while (k > 1) { U$D65B4=
int j = k >> 1; N]=q|D
if (queue[j]>queue[k]) 8\A#CQ5b
break; eF-."1
SortUtil.swap(queue,j,k); qHlQ+:n
k = j; 9w"4K.
} a fW@T2
} YHygo#4=8
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} yZ U6xY
6HWE~`ok6
}
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i#Bf"W{F
SortUtil: `%9 uE(
ShP^A"Do
package org.rut.util.algorithm; .:%0E`E
Zaf:fsj>
import org.rut.util.algorithm.support.BubbleSort; jZkcBIK2
import org.rut.util.algorithm.support.HeapSort; aP@N)"
import org.rut.util.algorithm.support.ImprovedMergeSort; [uN?
~lp\%
import org.rut.util.algorithm.support.ImprovedQuickSort; 2E)-M9ds
import org.rut.util.algorithm.support.InsertSort; ,Np0wg0
import org.rut.util.algorithm.support.MergeSort; k|PN0&J
import org.rut.util.algorithm.support.QuickSort; M; tqp8
import org.rut.util.algorithm.support.SelectionSort; :vQrOn18p
import org.rut.util.algorithm.support.ShellSort; :zke %Yx
\aUC(K~o\;
/** V1`o%;j
* @author treeroot RmeD$>7
* @since 2006-2-2 SBk4_J/_
* @version 1.0 k:#!zK}
*/ [
=9T*Sp
public class SortUtil { #:U%mHT(_
public final static int INSERT = 1; )e=D(qd
public final static int BUBBLE = 2; Em
!/a$
public final static int SELECTION = 3; ' ;FnIZ
public final static int SHELL = 4; Ma']?Rb`
public final static int QUICK = 5; S3*`jF>q
public final static int IMPROVED_QUICK = 6; h-K_Lr]
public final static int MERGE = 7; vm7z,FfN
public final static int IMPROVED_MERGE = 8; @&3EJ1
public final static int HEAP = 9; .K2qXw"S#
n&qg;TT
public static void sort(int[] data) { ;LPfXpR
sort(data, IMPROVED_QUICK); ^Hnb}L
} CMG&7(MR
private static String[] name={
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S8wLmd>
}; N&+x+;Kx
$)ijN^hV
private static Sort[] impl=new Sort[]{ U175{N%3
new InsertSort(), c&?m>2^6
new BubbleSort(), /}fHt^2H
new SelectionSort(), {{D)YldtA
new ShellSort(), "W7K"=X
new QuickSort(), Zd}9O jz5
new ImprovedQuickSort(), m_?~OL S
new MergeSort(), D4lG[qb
new ImprovedMergeSort(), 0oZ=
yh
new HeapSort() O1U= X:Zl
}; F Q7T'G![
< #}5IQ5`Z
public static String toString(int algorithm){ ~IfJwBn-i
return name[algorithm-1]; tGh~!|P
} Ms5ap<q#
HIR~"It$
public static void sort(int[] data, int algorithm) { HU8900k+
impl[algorithm-1].sort(data); 7cT~oV !G_
} p{Yv3dNl
F^t DL:
public static interface Sort { Vvn2 Ep
public void sort(int[] data); 2~1SQ.Q<RY
} ^w@%cVh
t?x<g <PJ4
public static void swap(int[] data, int i, int j) { rq/yD,I,
int temp = data; r6MMCJ|G
data = data[j]; 3G)#5Lf<
data[j] = temp; 7uS~MW
} ?GoR^p #p
} l|~A#kq