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。 k='sI^lF
插入排序: lE08UEk1i
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package org.rut.util.algorithm.support; -"Lia!Q]M
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import org.rut.util.algorithm.SortUtil; !6|Kpy8
/** 5ejdf
* @author treeroot s['F?GWg
* @since 2006-2-2 TWl':}
* @version 1.0 /YHBhoat
*/ _]1dm)%
public class InsertSort implements SortUtil.Sort{ fS-#dJC";`
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/* (non-Javadoc) ;M8N%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f'Wc_L)
*/ w |>:mQnU
public void sort(int[] data) { 4u X<sJ*
int temp; Y%p"RB[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u%5B_<90V
} (Z)
} [:a;|t
} ;W?e@ Lgxk
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} #g4X`AHB
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冒泡排序: LH]nJdq?)
[HtU-8:
package org.rut.util.algorithm.support; >~TLgq*
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import org.rut.util.algorithm.SortUtil; |=l;UqB
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/** Il'+^u_ <
* @author treeroot 8iK>bp
* @since 2006-2-2 |?V6__9
* @version 1.0 ,":ADO-
*/ R2x(8k"LPU
public class BubbleSort implements SortUtil.Sort{ n1DD+@
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/* (non-Javadoc) 1P3^il7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JmWN/mx
*/ s=~r. x
public void sort(int[] data) { wjoxfPnf
int temp; z^{VqC*o+
for(int i=0;i for(int j=data.length-1;j>i;j--){ d
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if(data[j] SortUtil.swap(data,j,j-1); #]:yCiA
} U|uvSJ)X
} fseHuL=~
} >LFhu6T
} bCdEItcD
A"I:cw"KY
} V\PGk<VO
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选择排序: ;-n+=@]7
mxq'A
package org.rut.util.algorithm.support; 3Q~ng2Wv%
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import org.rut.util.algorithm.SortUtil; |0B h
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/** N02N
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* @author treeroot fi:Z*-
* @since 2006-2-2 Z99%uI3
* @version 1.0 hi*\5(uH
*/ rQ;m|@
public class SelectionSort implements SortUtil.Sort { cDxjD5E
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/* jToA"udW/
* (non-Javadoc) (lwkg8WC
* qdL;Ii<Y0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Wn6r_:
*/ ?#rDoYt/Sx
public void sort(int[] data) { $wdIOfaH
int temp; :a0qm.EN
for (int i = 0; i < data.length; i++) { hCc_+/j|
int lowIndex = i; CcLP/
for (int j = data.length - 1; j > i; j--) { x>!#8?-h
if (data[j] < data[lowIndex]) { n$axqvG
lowIndex = j; "DjD"?/b
} 6S2D\Bt,_
} X[(u]h`
SortUtil.swap(data,i,lowIndex); G3OqRH
} ]{0
2!
} X@\rg}kP
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} U5Q `r7
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Shell排序: [L{q
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package org.rut.util.algorithm.support; ](aXZ<,
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import org.rut.util.algorithm.SortUtil; H8mmmt6g
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/** # yAt `
* @author treeroot {Ymn_
* @since 2006-2-2 (VI4kRj
* @version 1.0 2p Q
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*/ `$AX!,<!G
public class ShellSort implements SortUtil.Sort{ nkG1&wiX
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/* (non-Javadoc) {uM*.]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <KoiZ{V
*/ ^{DXin 1O`
public void sort(int[] data) { ,@;",
for(int i=data.length/2;i>2;i/=2){ [W,Ej
for(int j=0;j insertSort(data,j,i); [GyW1-p33w
} ==RYf*d
} [O2xE037h`
insertSort(data,0,1); QaH32(iH
} U6t>UE6k
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/** wI'T Je,
* @param data *Ew`Fm H
* @param j @!=q.4b
* @param i E].hoq7WiB
*/ 7v]>ID
private void insertSort(int[] data, int start, int inc) { W;4rhZEgd
int temp; ]u?|3y^(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |C301ENZ
} 8d?r )/~
} zVKbM3(^
} _D1Uc|
7?9QlUO
} >gRb.-{ux
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快速排序: s!:'3[7+
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package org.rut.util.algorithm.support; A(V,qw8
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import org.rut.util.algorithm.SortUtil; J$F
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{ 0RwjPYp
/** CBN,~wzP*
* @author treeroot ,bzE`6
* @since 2006-2-2 <j,ZAA&5%Y
* @version 1.0 _C2iP[YwQ{
*/ 2w_[c.
public class QuickSort implements SortUtil.Sort{ HL]8E}e\"
t6DgWKT6
/* (non-Javadoc) j#G4A%_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G8z.JX-7g
*/ mhVdsa
public void sort(int[] data) { \5M1;
quickSort(data,0,data.length-1); a> qB
k})
} T&+*dyNxMK
private void quickSort(int[] data,int i,int j){ iY?J3nxD-:
int pivotIndex=(i+j)/2; Of0(.-Q w
file://swap 2T 3tKX
SortUtil.swap(data,pivotIndex,j); +i^@QNOa
)
rw!. )
int k=partition(data,i-1,j,data[j]); yAD-sy +/
SortUtil.swap(data,k,j); \ GYrPf$
if((k-i)>1) quickSort(data,i,k-1); gr1NcHu
if((j-k)>1) quickSort(data,k+1,j); ZZq]I
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5
} Yw=7(}
/** c||EXFS}O
* @param data n x4:n@J
* @param i {6Y |Z>
* @param j V3D`pt\[x
* @return u+EZ"p;o
*/ RGEgYOO
private int partition(int[] data, int l, int r,int pivot) { 7}#zF]vHNi
do{ 9UDanj P
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \.ukZqB3
0
SortUtil.swap(data,l,r); 8k +^jj
} |ht:_l
8
while(l SortUtil.swap(data,l,r); {$qE>ic
return l; M/?eDW/
} >|zMN$:
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} sE^ee2]OI@
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改进后的快速排序: | KtI:n4d
IVSOSl|
package org.rut.util.algorithm.support; ]QC9y:3
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import org.rut.util.algorithm.SortUtil; W{Uz#o
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/** J4?i\wD:
* @author treeroot ;n,xu0/
* @since 2006-2-2 :'`y}'
* @version 1.0 U}T{r%9
*/ ~aPe?{yIUa
public class ImprovedQuickSort implements SortUtil.Sort { C&|K7Zp0v
jYUN:
private static int MAX_STACK_SIZE=4096; (^pIB~.z
private static int THRESHOLD=10; ?7=c`
/* (non-Javadoc) `6y=ky.,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [[$dPa9
*/ eWWqK9B.-
public void sort(int[] data) { ] M`%@ps
int[] stack=new int[MAX_STACK_SIZE]; qP{Fwn
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int top=-1; HK
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int pivot; 36e
int pivotIndex,l,r; r[g
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stack[++top]=0; "UX/yLc3(
stack[++top]=data.length-1; @yM$Et5
@U+#@6
while(top>0){ C19}Y4r:
int j=stack[top--]; p0rmcP1Ln
int i=stack[top--]; PctXh, =
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pivotIndex=(i+j)/2; F[(ocxQZ3
pivot=data[pivotIndex]; E)%DLZ
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SortUtil.swap(data,pivotIndex,j); ?wP/l
]!q>@b
file://partition BItH0r7
l=i-1; RDfvD|}VN
r=j; (/7b8)g
do{ hCBre5
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &%]v0QK
SortUtil.swap(data,l,r); .0YcB
} H-rxn
while(l SortUtil.swap(data,l,r); =(+]ee!Ti
SortUtil.swap(data,l,j); }W)b
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if((l-i)>THRESHOLD){ |'Z+`HI
stack[++top]=i; jB<B_"
stack[++top]=l-1; ZIN1y;dJ
} 'ZJb`
if((j-l)>THRESHOLD){ D V\7KKJE
stack[++top]=l+1; /WGD7\G'8
stack[++top]=j; IaZmN.k*
} S B~opN
4a0Ud !Qcs
} qt(4?_J
file://new InsertSort().sort(data); Qr\eT}
insertSort(data); NH;e|8
} _@i-?Q
/** ;>uB$8<_7
* @param data 4E2#krE%
*/ mv>0j<C91
private void insertSort(int[] data) { uwQgu!|x
int temp; ^k*%`iQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v%$l(
} JH| D
} oi
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} 2Z(t/Zp>
ny{S&f
} XHxJzYMc
^vxx]Hji
归并排序: v4Wq0>o
ep~+]7\
package org.rut.util.algorithm.support; &#JYh=#
tA^+RO4
import org.rut.util.algorithm.SortUtil; g zlxkv-F{
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/** Ypl;jkHP
* @author treeroot >yr;Y4y7K
* @since 2006-2-2 s>:gL,%c
* @version 1.0 zJP jsD]
*/ -.r"|\1X
public class MergeSort implements SortUtil.Sort{ }]H7uC!t
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/* (non-Javadoc) 3b\s;!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g4=C]\1
*/ 0J^Z)U>j
public void sort(int[] data) { Dt<MEpbur
int[] temp=new int[data.length]; A
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mergeSort(data,temp,0,data.length-1); 9+MW13?
} a_bZT4
%19~9Tw
private void mergeSort(int[] data,int[] temp,int l,int r){ iZ>P>x\
int mid=(l+r)/2; I{0cnq/
if(l==r) return ; f,i2U|1pbj
mergeSort(data,temp,l,mid); ?A;RTM
mergeSort(data,temp,mid+1,r); X $V_
for(int i=l;i<=r;i++){ `k>C%6FG$#
temp=data; @54$IhhT~
} )5n0P
Zi
int i1=l; ZnJJ-zP
int i2=mid+1; (&NLLrsio
for(int cur=l;cur<=r;cur++){ h^_^)P+;
if(i1==mid+1) 34X]b[^
data[cur]=temp[i2++]; G~DHNO6
else if(i2>r) ovOV&Zt
data[cur]=temp[i1++]; %,1TAmJfHa
else if(temp[i1] data[cur]=temp[i1++]; s-5#P,Lw
else lAA-#YG
data[cur]=temp[i2++]; 7XT(n v
} IJKdVb~
} (^W
:f{
;hODzfNkS
} G /$+e
ygV_"=+|N
改进后的归并排序: pGD-K41O]
v(R^LqE
package org.rut.util.algorithm.support; f+ZOE?"
}5 n\us
import org.rut.util.algorithm.SortUtil; ^V1\boo=
j:uq85s
/** Gh.?6kuh
* @author treeroot ,aD~7QX1:
* @since 2006-2-2 J zFR9DEt
* @version 1.0 *~4<CP+"0
*/ o/
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public class ImprovedMergeSort implements SortUtil.Sort { 88<d<)7t
yPT o,,ca=
private static final int THRESHOLD = 10; 5D=U.UdR
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/* k"%JyO8Y
* (non-Javadoc) ^t71${w##
* ~3Pp}eO~V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KztQT9kY
*/ 8@+<W%+th
public void sort(int[] data) { 9015PEO
int[] temp=new int[data.length]; !-n*]C
mergeSort(data,temp,0,data.length-1); %-fS:~$
} x4>"m(&%
|OAiHSW"V
private void mergeSort(int[] data, int[] temp, int l, int r) { !gV{[j?~zr
int i, j, k; )Ghw!m
int mid = (l + r) / 2; qhG2j;
if (l == r) ooB9iNo^
return; op2Zf?Bx{+
if ((mid - l) >= THRESHOLD) DF-PBVfpu
mergeSort(data, temp, l, mid); tUZfQ
else 6<
-Cpc
insertSort(data, l, mid - l + 1); k,'MmAz
if ((r - mid) > THRESHOLD) ~ArRD-_t
mergeSort(data, temp, mid + 1, r); W5Jy"]^I
else _<2{8>EVf
insertSort(data, mid + 1, r - mid); v5e*R8/
|;(P+Q4lB
for (i = l; i <= mid; i++) { hT_Q_1,
temp = data; uit.r^8l
} Wi5Dl=
for (j = 1; j <= r - mid; j++) { 8 l= EL7
temp[r - j + 1] = data[j + mid]; 3G 5xIr6
} -G? IXgG
int a = temp[l]; m+7%]$
int b = temp[r]; .X(qs 1
for (i = l, j = r, k = l; k <= r; k++) { &}C-W*
f,Z
if (a < b) { ]oz >/\!
data[k] = temp[i++]; `-cw[@uD
a = temp; k#~oagW_Gw
} else { Uc,..
data[k] = temp[j--]; ZQir?1=
b = temp[j]; P*}aeu&lnD
} @qW$un:
} }M"])B I
} 2h]CZD4
@}waZ?'
/** 9C Ki$L
* @param data n"}*C|(k
* @param l .q:6F*,1M
* @param i /zQx}U)TP
*/ Qi=0[
private void insertSort(int[] data, int start, int len) { _*{Lha
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ./.aLTh
} (Uu5$q(
} 7B5b
+
} kD1Nq~h2
} c3c3T`B
cH:&S=>h
堆排序: p/7'r
Oi$1ma xT
package org.rut.util.algorithm.support; [ybK
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import org.rut.util.algorithm.SortUtil; `)KGajB
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/** Rg46V-"d,@
* @author treeroot :f_oN3F p
* @since 2006-2-2 B`3z(a92S
* @version 1.0 jA~omX2A
*/ VQ2'a/s
public class HeapSort implements SortUtil.Sort{ z?kE((Ey
W >}T$a}\
/* (non-Javadoc) _/.VXW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Nd)$Oq[4
*/ saQo]6#
public void sort(int[] data) { QGGBI Ku
MaxHeap h=new MaxHeap(); eAjR(\f>
h.init(data); 3A~<|<}t
for(int i=0;i h.remove(); 0(Z:QqpU$
System.arraycopy(h.queue,1,data,0,data.length); OR'e!{
} jeA2yjAC
RF
-c`C
private static class MaxHeap{ 2VX9FDrnk
2\|sXC
void init(int[] data){ 2S[:mnK
this.queue=new int[data.length+1]; Eg2jexl
for(int i=0;i queue[++size]=data; [(TmAEON
fixUp(size); #(a ;w
} u% 1JdEWZd
} yiH;fK +x
83# <Yxk~
private int size=0; Z?9G2<i
R6z *!W{
private int[] queue; ft0d5n!ui4
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public int get() { ZdPqU\G^q
return queue[1]; hM="9]i.
} @ IDY7x27
pV 8U`T
public void remove() { #KHj.Vg
SortUtil.swap(queue,1,size--); _pvt,pW
fixDown(1); 9j-;-`$S
} =0;njL(7;
file://fixdown sE{5&aCSR
private void fixDown(int k) { ~rXLb:
int j; 0Am\02R.C,
while ((j = k << 1) <= size) { Y(T$k9%}+
if (j < size %26amp;%26amp; queue[j] j++; rF{,]U9`
if (queue[k]>queue[j]) file://不用交换 auY?Cj'"fs
break; ]1h9:PF
SortUtil.swap(queue,j,k); Y q|OX<i`K
k = j; Hxc>?
} `m"K_\w=/
} wk^$DM/KJ)
private void fixUp(int k) { \]S)PDqR
while (k > 1) { BPOT!-
int j = k >> 1; W!=ur,F+
if (queue[j]>queue[k]) U Q)^`Zj
break; am| 81)|a
SortUtil.swap(queue,j,k); 8 QI+O`
k = j; dV*9bDkM/
} ]a*26AbU+
} 20Jlf?
L$, Kdpj
} cmd7-2
<5h}\5#<j
} *8u<?~9F
LJ z6)kz
SortUtil: ~~p )_
J~
*>pp#U
package org.rut.util.algorithm; E=,fdyj.
8`I,KkWg
import org.rut.util.algorithm.support.BubbleSort; =dWqB&
import org.rut.util.algorithm.support.HeapSort; fX1Ib$v
import org.rut.util.algorithm.support.ImprovedMergeSort; _tQM<~Y]u\
import org.rut.util.algorithm.support.ImprovedQuickSort; o?#-Tkb
import org.rut.util.algorithm.support.InsertSort; {9Q**U`w
import org.rut.util.algorithm.support.MergeSort; yVpru8+eD
import org.rut.util.algorithm.support.QuickSort; ]\ZmK0q<:
import org.rut.util.algorithm.support.SelectionSort; ~eiD(04^r*
import org.rut.util.algorithm.support.ShellSort; 4O{,oN~7
$L ]M3$\9
/** mK^E@uxN
* @author treeroot p<FqK/
* @since 2006-2-2 ezm*9Jc~p
* @version 1.0 ^7*zi_Q
*/ ,~Lx7 5{
public class SortUtil { 52'6wwv6?
public final static int INSERT = 1; 7WNUHLEt
public final static int BUBBLE = 2; _0iV6Bj
public final static int SELECTION = 3; =66'33l2
public final static int SHELL = 4; }/L#<n`Z
public final static int QUICK = 5; -V'Y^Df
public final static int IMPROVED_QUICK = 6; q1rD>n&d
public final static int MERGE = 7; lxR]Bh+
public final static int IMPROVED_MERGE = 8; [mG!-.ll
public final static int HEAP = 9; F$YT4414
@ykl:K%ke
public static void sort(int[] data) { 1T4#+kW&
sort(data, IMPROVED_QUICK); 7H,)heA
} h5v=h>c
private static String[] name={ q5)
K
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \23m*3"W
}; e=[@HVr
ahN8IV=+Gm
private static Sort[] impl=new Sort[]{ (L W2S;-
new InsertSort(), F&7^M0x\ O
new BubbleSort(), /3;]e3x
new SelectionSort(), wF*9%K'E
new ShellSort(), zXIdup@
new QuickSort(), fBBtS S
new ImprovedQuickSort(), bUuQ"!>ppu
new MergeSort(), jq_ i&~S
new ImprovedMergeSort(), P9jSLM
new HeapSort() K[Vj+qdyl
}; 59X XmVg
}>b@=5O
public static String toString(int algorithm){ G4\|bwh
return name[algorithm-1]; y&wo"';
} d@ ]N
c^z)[
public static void sort(int[] data, int algorithm) { @=BApuer+
impl[algorithm-1].sort(data); qXoq<
|
} _Ec"[xW
x-b}S1@
public static interface Sort { G(bl)p^
public void sort(int[] data); uF[~YJ>
} 0y2zjXM;3
6A ptq
public static void swap(int[] data, int i, int j) { ~G.MaSm
int temp = data; ^,`]Q)P^
data = data[j]; 9!ARr@ ;
data[j] = temp; zd {sw}
} 6;(b-Dhi
} =o'g5Be<F