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。 cV6D<,)
插入排序: /,yd+wcW#
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package org.rut.util.algorithm.support; +O{*M9B
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import org.rut.util.algorithm.SortUtil; 6nvz8f3*r]
/** Yj49t_$b
* @author treeroot wn%A4-%{
* @since 2006-2-2 p6V0`5@t
* @version 1.0 $6 f3F?y7
*/ 1GcE)e!>
public class InsertSort implements SortUtil.Sort{ TD0
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/* (non-Javadoc) J*M>6Q.)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %tGO?JMkd
*/ Bwxd&;E
public void sort(int[] data) { \R_C&=
int temp; gwMNYMI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _G@GpkSe>
} ZY+qA
} d#FQc18v}k
} ?:q*(EC<
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} m:2^=l4
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冒泡排序: CD~.z7,LC
7?_CcRe
package org.rut.util.algorithm.support; L="}ErmK
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import org.rut.util.algorithm.SortUtil; m-, x<bM?
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/** rV#ch(
* @author treeroot /U9"wvg
* @since 2006-2-2 :$c
|
* @version 1.0 VTE .^EK!
*/ ;e *!S}C,
public class BubbleSort implements SortUtil.Sort{ YS0<qSN
} q8ASYNc
/* (non-Javadoc) 4tBYR9|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H.MI5O (Q
*/ "chDg(jMZ
public void sort(int[] data) { Wne@<+mX
int temp; iYy1!\
for(int i=0;i for(int j=data.length-1;j>i;j--){ S,he6zS
if(data[j] SortUtil.swap(data,j,j-1); ?UoBV$
} |CyE5i0
} 4kx
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} 9yP;@y*d
} 'H;*W |:-]
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} Avb\{)s+
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选择排序: @j/a=4o[
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package org.rut.util.algorithm.support; R6->t #n,
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import org.rut.util.algorithm.SortUtil; \9T7A&
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/** 6'f;-2
* @author treeroot #H~64/
* @since 2006-2-2 mC#>33{
* @version 1.0 0g8NHkM:2a
*/ `ERz\`d~Y;
public class SelectionSort implements SortUtil.Sort { es7=%!0
Nh44]*
/* ?:0Jav
* (non-Javadoc) sYA1\YIii
* BI@[\aRLQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $I?"lky
*/ >A"(KSNL
public void sort(int[] data) { pQB."[n
int temp; y6BAH
for (int i = 0; i < data.length; i++) { V0mn4sfs
int lowIndex = i; ]`WJOx4
for (int j = data.length - 1; j > i; j--) { Mi_$">1-W
if (data[j] < data[lowIndex]) { )^hbsMhO
lowIndex = j; ?S=mybp
} %W S+(0*1
} JBZ@'8eqi]
SortUtil.swap(data,i,lowIndex); [:*)XeRK
} @=u3ZVD
} ns4,@C$
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} OY({.uV dX
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Shell排序: E]r?{t`]
w0unS`\4
package org.rut.util.algorithm.support; |R:'\+E
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import org.rut.util.algorithm.SortUtil; dPRra{
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/** oXgcc*j
* @author treeroot 47/iF97
* @since 2006-2-2 tZo} ;|~'
* @version 1.0 '|=;^Z7.K
*/ LDa1X2N
public class ShellSort implements SortUtil.Sort{ GC'O[q+
j'K/22
/* (non-Javadoc) Ax}JLPz5'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `Q,H|hp;k;
*/ X}0cCdW
public void sort(int[] data) { k9F=8q
for(int i=data.length/2;i>2;i/=2){ wy2
D;;
for(int j=0;j insertSort(data,j,i); _o~nr]zx
} 8q7b_Pq1U
} <gBA1oRz
insertSort(data,0,1); <OPArht
} L}NSR
|4`{]2C
/** 93hxSRw
* @param data ,2ar7
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* @param j ddR>7d}N
* @param i C7AUsYM
*/ 5F"jkd+
private void insertSort(int[] data, int start, int inc) { 9N3eN
int temp; d'sZxU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kcxAd
} +"VP-s0
} )`D:F>p*
} 2J;g{95z
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} *8XEYZa
@KAI4LP
快速排序: #.[k=dj
3;Fhg!ZO
package org.rut.util.algorithm.support; :BTq!>s
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import org.rut.util.algorithm.SortUtil; TS5Q1+hWHV
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/** &+R?_Ooibk
* @author treeroot ehY5!D1Q
* @since 2006-2-2 LOJAWR9$^U
* @version 1.0 [ikOb8 G#
*/ ct}9i"H#1
public class QuickSort implements SortUtil.Sort{ e(G|;a
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/* (non-Javadoc) {VoHh_[5%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40
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*/ cN9t{.m
public void sort(int[] data) { J$v?T$LVw
quickSort(data,0,data.length-1); 1-QS~)+
} EJ@ ~/)<
private void quickSort(int[] data,int i,int j){ ~PNub E
int pivotIndex=(i+j)/2; W@!S%Y9
file://swap pD+k*
SortUtil.swap(data,pivotIndex,j); OZ!^ak
L8 @1THY
int k=partition(data,i-1,j,data[j]); 3f;>" P}
SortUtil.swap(data,k,j); "
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if((k-i)>1) quickSort(data,i,k-1); FxtI"g\0
if((j-k)>1) quickSort(data,k+1,j); POR\e|hRT]
VLN_w$iEq
} e?f IXk~b
/** #R
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* @param data >lM l
* @param i N17RLz *\
* @param j &
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* @return E1 f\%!2l
*/ 2GStN74X r
private int partition(int[] data, int l, int r,int pivot) { ~y[7K{{ ;T
do{ 8-6L|#J#
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =mmWl9'mJ
SortUtil.swap(data,l,r); 00U> F
} HUO j0T
while(l SortUtil.swap(data,l,r); xn|(9#1o
return l; PnG-h~Y3N
} N)>ID(}F1
5NLDYi@3
} {kAc(
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改进后的快速排序: L4?IHNB
5rUdv}.
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; T9q-,w/j;
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/** W`*r>`krVJ
* @author treeroot 7T'B6`-Ox
* @since 2006-2-2 r!{Up7uL
* @version 1.0 FU<Jp3<%
*/ XBw)H
public class ImprovedQuickSort implements SortUtil.Sort { S#[j )U-
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private static int MAX_STACK_SIZE=4096; G9@0@2aY8
private static int THRESHOLD=10; ?b5^
/* (non-Javadoc) !$>R j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nl(Foya%)
*/ VOh4#%Vj
public void sort(int[] data) { EAby?51+
int[] stack=new int[MAX_STACK_SIZE]; F1Bq$*'N$w
y L~W.H
int top=-1; d8x;~RA
int pivot; ?@
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int pivotIndex,l,r; e64 ^ChCoV
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stack[++top]=0; ;P&OX5~V
stack[++top]=data.length-1; 0'o:#-
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while(top>0){
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int j=stack[top--]; _8agtQ:<
int i=stack[top--]; $]2vvr
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pivotIndex=(i+j)/2; R_S.tT!
pivot=data[pivotIndex]; ?#Q #u|~
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SortUtil.swap(data,pivotIndex,j); 2T[9f;jM'
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file://partition ;mKb]
l=i-1; &XUiKnNW
r=j; 4|#WFLo@
do{ >~+ELVB&
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {P#|zp 4C{
SortUtil.swap(data,l,r); U\!X,a*ts{
} CQDkFQq-dq
while(l SortUtil.swap(data,l,r); -1ub^feJ,
SortUtil.swap(data,l,j); *bpD`s
@
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if((l-i)>THRESHOLD){ Tkgs]q79
stack[++top]=i; IRqy%@)
stack[++top]=l-1; 9490o:s
} )TM4R)r%)9
if((j-l)>THRESHOLD){ 3%=~)7cF
stack[++top]=l+1; zT?D<XW>1
stack[++top]=j; DrK{}uM
} y Fq&8 x<X
;@E$}*3[>V
} LvYB7<zk>
file://new InsertSort().sort(data); URbletSBQ
insertSort(data); ?p8_AL'RS
} >t_6B~x9
/** 5rZ
* @param data F`]2O:[
*/ WQO) =n
private void insertSort(int[] data) { G9<X_
int temp; /fV;^=:8c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q?/a~a
} T:W4$P
} w_u\sSQ`!
} OJy#w{4
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} CF5`-wj/#
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归并排序: ~z;FP$U
=+d?x56
package org.rut.util.algorithm.support; 2*#|Nj=^
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import org.rut.util.algorithm.SortUtil; <0q;NrvUb
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/** Hc(OI|z~
* @author treeroot kt$jm)UI~l
* @since 2006-2-2 ZbAcO/
* @version 1.0 [Hh9a;.*}h
*/ x0:m-C
public class MergeSort implements SortUtil.Sort{ $l&(%\pp
8 uwq-/$
/* (non-Javadoc) n^6j9FQ7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N^:9Fz
*/ -4_$lnw$
public void sort(int[] data) { x5 *!Wx
int[] temp=new int[data.length]; (qulwOt~w
mergeSort(data,temp,0,data.length-1); @/-\k*T
} G{%L B}2
fNZ__gO!%
private void mergeSort(int[] data,int[] temp,int l,int r){ y:qUn!3
int mid=(l+r)/2; 7o5BXF
if(l==r) return ; V[vl!XM
mergeSort(data,temp,l,mid); fMyti$1~
mergeSort(data,temp,mid+1,r); oIj#>1~c%
for(int i=l;i<=r;i++){ ]}2ZttQ?
temp=data; '}bgLv
} 3"KCh\\b
int i1=l; nt7.?$
int i2=mid+1; (mt k 4
for(int cur=l;cur<=r;cur++){ .];=Pu^
if(i1==mid+1) x0w4)Ic5
data[cur]=temp[i2++]; qR+!l(
else if(i2>r) |64~K\X
data[cur]=temp[i1++]; YcK|.Mq':
else if(temp[i1] data[cur]=temp[i1++]; }s<4{:cv+
else :T
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data[cur]=temp[i2++]; L AAHEv
} K1!j fp
} ax5<#3__
ur7q [n
} u.Tcg^ v
v^iL5y!
改进后的归并排序: G<rHkt@[
7CTFOAx#
package org.rut.util.algorithm.support; PQ$%H>{
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import org.rut.util.algorithm.SortUtil; 2n"V}p>8i#
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/** +l{=
* @author treeroot t"'7m^j
* @since 2006-2-2 @xYlS5{
* @version 1.0 Qtv&ijFC
*/ i5?q,_
public class ImprovedMergeSort implements SortUtil.Sort { R>mmoG}MQ[
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private static final int THRESHOLD = 10; !lc[
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/* HLaRGN3,
* (non-Javadoc) (7=!+'T"
* RxWVe-Dg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d8=x0~7
*/ 8::$AQL3
public void sort(int[] data) { ?[Q3q4
int[] temp=new int[data.length]; (tw)nF
mergeSort(data,temp,0,data.length-1); &/]Fc{]^$f
} :; fHDU|
mahJSz(3
private void mergeSort(int[] data, int[] temp, int l, int r) { xx9 g''Q
int i, j, k; s6.M \^
int mid = (l + r) / 2; @Y<bwv
if (l == r) ;{tj2m,
return; x%!s:LVX
if ((mid - l) >= THRESHOLD) f-G:uI_
mergeSort(data, temp, l, mid); @{tz:f
else F Yzi~L
insertSort(data, l, mid - l + 1); ,a]?S^:y]
if ((r - mid) > THRESHOLD) NDlF0f
mergeSort(data, temp, mid + 1, r); q]e`9/U
else
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insertSort(data, mid + 1, r - mid); L4z ~B!uvF
ww $
for (i = l; i <= mid; i++) { qPy1;maXP
temp = data; kN4{13Qs*
} 64G[|" j D
for (j = 1; j <= r - mid; j++) { k" PayyAC
temp[r - j + 1] = data[j + mid]; 5T2CISmu
} ``\i58K{e
int a = temp[l]; "8^
Ch{G-
int b = temp[r]; v)t:|Q{I
for (i = l, j = r, k = l; k <= r; k++) { OJ5#4qJ[
if (a < b) { <;m<8RjX
data[k] = temp[i++]; r@t9Ci=}
a = temp; Mh/dpb\Z
} else { *<jAiB,O*
data[k] = temp[j--]; pRIhFf
b = temp[j]; p=GBUII #
} @l jA
} _ff`y
} nR}sNl1
5l 2 ?
/** IIF]/Ek]
* @param data 92x(u%~E
* @param l hYNY"VB
* @param i k_5L4c:"
*/ q?DTMKx
private void insertSort(int[] data, int start, int len) { v}O30wE
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'o+L41
} CpeU5 o@
} [] `&vWZ
} =JbRu|/
} dq&yf7
s!c`=
堆排序: 9c#+qH
pU%n]]qF
package org.rut.util.algorithm.support; #W'HR
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import org.rut.util.algorithm.SortUtil; wq(7|!Eix
Z/0fXn})
/**
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* @author treeroot uU <=d
* @since 2006-2-2 _c*=4y
* @version 1.0 s{S4J'VW
*/ M&@b><B
public class HeapSort implements SortUtil.Sort{ &d+Kg0 :
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/* (non-Javadoc) )Sg~[WxDv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hjB@o#S
*/ dWUm\t'#
public void sort(int[] data) { ~&8^9E a
MaxHeap h=new MaxHeap(); 'y2nN=CN
h.init(data); PQnF
for(int i=0;i h.remove(); q[`]D7W
"
System.arraycopy(h.queue,1,data,0,data.length); 6[LM_eP
} vCxD~+zf
1[qLA!+
private static class MaxHeap{ QnXA*6DJ
G!W[8UG
void init(int[] data){ =K{"{5Wb
this.queue=new int[data.length+1]; Wm"4Ae:B
for(int i=0;i queue[++size]=data; + SFVv_n
fixUp(size); I)cFG{~L
} Hh-+/sO~"
} %?uc><&?e
;WM"cJo9
private int size=0; $Ifmc`r1
cU@SIJ)
private int[] queue; [}/LD3
i2YuOV!
public int get() { V_RTI.3p
return queue[1]; dC$Em@Nb
} d`nVc50
XZJ+h,f
public void remove() { OjF_ %5
SortUtil.swap(queue,1,size--); Ib\iT:AJ
fixDown(1); YN2sdG
} wztA3ZL*W1
file://fixdown H!nr^l'+
private void fixDown(int k) { `m>*d!h=
int j; ##;Er47@^
while ((j = k << 1) <= size) { 65p?Igb
if (j < size %26amp;%26amp; queue[j] j++; #H{<gjs]
if (queue[k]>queue[j]) file://不用交换 (
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break; ~ !
3I2
SortUtil.swap(queue,j,k); "
'6;/N
k = j; qT"Q1xU[
} Bck7\
} m~Bl*`~M
private void fixUp(int k) { }L3 oR
while (k > 1) { jJY"{foWV
int j = k >> 1; f3{MvAy[
if (queue[j]>queue[k]) :Jy'#c
break; C] 9p5Hs
SortUtil.swap(queue,j,k); *R3f{/DK
k = j; PBxCx3a{
} 6s\Kt3=
} .k9{Yv0
7J|VD#DE$Y
} 0-|byAh
\B 0ywN?
} ;3: q?&
pN9A{v(
SortUtil: %8Dzo
a{J,~2>
package org.rut.util.algorithm; Eam
dBe`p5Z
import org.rut.util.algorithm.support.BubbleSort; oiyzHx
import org.rut.util.algorithm.support.HeapSort; xY U.D+RY
import org.rut.util.algorithm.support.ImprovedMergeSort; 2fS[J'-o
import org.rut.util.algorithm.support.ImprovedQuickSort; eDJfU
import org.rut.util.algorithm.support.InsertSort; ~aOuG5XK
import org.rut.util.algorithm.support.MergeSort; '+vA\(K
import org.rut.util.algorithm.support.QuickSort; IlE_@gS8
import org.rut.util.algorithm.support.SelectionSort; UkHY[M7;
import org.rut.util.algorithm.support.ShellSort; rEv*)W
t|<NI+H(e
/** ~J8pnTY
* @author treeroot i|}[A
* @since 2006-2-2 psC
mbN
* @version 1.0 _5m#2u51i
*/ w'fT=v)
public class SortUtil { DUe&r,(4O
public final static int INSERT = 1; E)7F\ w
public final static int BUBBLE = 2; S:q3QgU=X
public final static int SELECTION = 3; .G(llA}
public final static int SHELL = 4; f0<%&2ym
public final static int QUICK = 5; ]oV{t<0a
public final static int IMPROVED_QUICK = 6; QgD g}\P
public final static int MERGE = 7; nJ"YIT1K]p
public final static int IMPROVED_MERGE = 8; ]%Nlv(
public final static int HEAP = 9; H_Kj7(=&>
?wF'<kEH
public static void sort(int[] data) { |),'9
sort(data, IMPROVED_QUICK); +sx 8t
} M=*bh5t%]
private static String[] name={ x^y" <
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qYf |Gv
}; 7 aYn0_NKp
MXiQ1x
private static Sort[] impl=new Sort[]{ C?= P
new InsertSort(), _s$_Sa ;
new BubbleSort(), hf<^/@^tK
new SelectionSort(), .tmiQ.
new ShellSort(), N!x =eC
new QuickSort(), 6uKMCQ=h
new ImprovedQuickSort(), /c-r
new MergeSort(), ^/=#UQ*k
new ImprovedMergeSort(), UMp/\&0
new HeapSort() A@D2+fS
}; 3
M10fI?
8kt5KnD2
public static String toString(int algorithm){ Q33"u/-v
return name[algorithm-1]; %#Z/2<_
} A'K%WW*'U
Gqcz<=/
public static void sort(int[] data, int algorithm) { j.ldaLdG
impl[algorithm-1].sort(data); kR@Yl Yo
} 7Irau_
o/
mF#
public static interface Sort { :BukUket1e
public void sort(int[] data); he -Ji
} +"}=d3E6
q4$+H{xB
public static void swap(int[] data, int i, int j) { F3lw@b3])
int temp = data; xc:!cA{V
data = data[j]; -;XKcS7Ue
data[j] = temp; ~!d/8?!
} y}K\%;`[a
} s (LT