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。 db 99S
插入排序: ;bwBd:Y
B
W*8
package org.rut.util.algorithm.support; & %/p;::A
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import org.rut.util.algorithm.SortUtil; e6p3!)@P1
/** sqhMnDn[
* @author treeroot M"*NV(".g
* @since 2006-2-2 d'(n/9K
* @version 1.0 WWSycH
?[
*/ tQ@7cjq8bA
public class InsertSort implements SortUtil.Sort{ e
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/* (non-Javadoc) z#gebr~_\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {N]WVp*R
*/ :?~)P!/xl5
public void sort(int[] data) { 8(`e\)%l0
int temp; |kZ!-?9Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8s22VL
} '=nmdqP
} zWo
} @7}XBg[pI
0d2RB^"i
} Rir0^XqG
l^I?@{W
冒泡排序: ~Bl,_?CBr
d>u^7:
package org.rut.util.algorithm.support; &&CrF~
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import org.rut.util.algorithm.SortUtil; }V]*FCpQ
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/** i\lvxbp
* @author treeroot ~6=6YP
* @since 2006-2-2 !{*yWpZ:
* @version 1.0 8^EWD3N`
*/ i'<hT
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public class BubbleSort implements SortUtil.Sort{ qJF'KHyU{l
R:n|1]*f3X
/* (non-Javadoc) ([<{RjPb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W?SAa7+
*/ I;}U/'RR>
public void sort(int[] data) { ^+-QY\N
j
int temp; Mxw-f4j
for(int i=0;i for(int j=data.length-1;j>i;j--){ QeF:s|[
if(data[j] SortUtil.swap(data,j,j-1); Ak3^en
} F4~OsgZ'N
} cAN8'S(s1
} UG44 oKB
} .WSn Y71
41/civX>V
} @F 8NN\
Pg.JI:>2Ku
选择排序: lZ5-lf4
^XeJZkLEB
package org.rut.util.algorithm.support; Ur 1k3
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import org.rut.util.algorithm.SortUtil; ,Gy,bcv{
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/** 8p829
* @author treeroot o#"yFP1
* @since 2006-2-2 +s_a{iMVP
* @version 1.0 Zbl*U(KU?
*/ *0oa2fz%
public class SelectionSort implements SortUtil.Sort { *DcIC]ao[
XR8`,qH>
/* hgYFR6VH
* (non-Javadoc) `6-flc0r
* D(Z#um8n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q0`@=5?-
*/ }+lK'6
public void sort(int[] data) { fFVQu\
int temp; hQ>$"0K
for (int i = 0; i < data.length; i++) { B t3++ Mj
int lowIndex = i; JK,^:tgm
for (int j = data.length - 1; j > i; j--) { ~i?Jg/qcxN
if (data[j] < data[lowIndex]) { ~tTa[_ a!
lowIndex = j; o1 27? ^
} 8yYag[m8
} qPi $kecx
SortUtil.swap(data,i,lowIndex); p]X+#I<
} D*46,>Tv
} ~{g/
%;]/Z%!
} z1tD2jL _
pqv l,G5
Shell排序: (=rDt93J
E\Wd*,/v)
package org.rut.util.algorithm.support; _`C|K>:
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import org.rut.util.algorithm.SortUtil; Z 9cb
*fd:(dN|
/** ?r]0 %W^
* @author treeroot S&=@Hj-
* @since 2006-2-2 P{s1NorKDh
* @version 1.0 PRYm1Y
*/ Gyy4)dP
public class ShellSort implements SortUtil.Sort{ ^4JK4+!Zfq
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/* (non-Javadoc) ve a$G~[%6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,]qc#KDq-1
*/ ?l[#d7IB
public void sort(int[] data) { [$$R>ELYQ
for(int i=data.length/2;i>2;i/=2){ ;E{@)X..|
for(int j=0;j insertSort(data,j,i); qc'KQ5w7!
} MP@}G$O
} FME,W&_d
insertSort(data,0,1); MC-Z6l2
} {>64-bU
5y='1s[%
/** y]i}j,e0L
* @param data u<n['Ur}|
* @param j W#d'SL#5
* @param i [vBP,_Tjx
*/ tOF8v8Hd
private void insertSort(int[] data, int start, int inc) { kSJ;kz,_
int temp; ?TDmW8G}J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O d6'bO;G
} x5#Kk.
} (0_]=r=q
} jA@
uV,w
$rjm MSxi
} bQ?Vh@j(M
m-[xrVV
快速排序: 6P9#6mZ
[$>@f{:
package org.rut.util.algorithm.support; ,DWq
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import org.rut.util.algorithm.SortUtil; BD.l 5~:
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/** 0aGauG[
* @author treeroot *!NW!,R
* @since 2006-2-2 _=[pW2p
* @version 1.0 lS2`#l >
*/ Vw.4;Zy(
public class QuickSort implements SortUtil.Sort{ J1r\Cp+h0
RXWdqaENx
/* (non-Javadoc) RY,L'GtO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2:[<E2z
*/ 0|\JbM
public void sort(int[] data) { uW(Ngcpr
quickSort(data,0,data.length-1); \WUCm.w6\%
} |c$*Fa"A
private void quickSort(int[] data,int i,int j){ z`J-J*R>d
int pivotIndex=(i+j)/2; B( wi+;
file://swap =xH>,-8}
SortUtil.swap(data,pivotIndex,j); |f}`uF
*MWI`=c
int k=partition(data,i-1,j,data[j]); : T4ap_Ycq
SortUtil.swap(data,k,j); i&}LuF8
if((k-i)>1) quickSort(data,i,k-1); /PBK:B
if((j-k)>1) quickSort(data,k+1,j); ^sJp!hi4=)
c)QOgXv
} 5tVg++I
/** +b dnTV6
* @param data `1
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* @param i 7,{!a56zX
* @param j CS xB)-
* @return %CrpUx
*/ TU2MG VYy
private int partition(int[] data, int l, int r,int pivot) { 2Aq+:ud)P
do{ gi/W3q3c6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Je#3
SortUtil.swap(data,l,r); w (,x{Bg\
} OH5#.${O
while(l SortUtil.swap(data,l,r); ]`@<I'?,X
return l; cc3+Wx_
} ZN;fDv
{RH)&k&%
} aXD|XE%
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改进后的快速排序: N1]P3
`b5pa `\4
package org.rut.util.algorithm.support; )]JQlm:H
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import org.rut.util.algorithm.SortUtil; s.!gsCQme
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/** 2CPh'7|l
* @author treeroot sGJZG
* @since 2006-2-2 4Cf.%f9@
* @version 1.0 F)tcQO"G
*/ mLeK7?GL
public class ImprovedQuickSort implements SortUtil.Sort { u,Cf4H*xS
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private static int MAX_STACK_SIZE=4096; #$-`+P
private static int THRESHOLD=10; kAk+Sq^n
/* (non-Javadoc) ~w$ ^`e!]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4{=^J2z
*/ k Rp$[^ma
public void sort(int[] data) { &;%LTF@I,
int[] stack=new int[MAX_STACK_SIZE]; ohB@ij C!
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int top=-1; bX&=*L+h6
int pivot; {c AGOx wd
int pivotIndex,l,r;
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stack[++top]=0; vF$sVu|B
stack[++top]=data.length-1; s\
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69{q*qCW
while(top>0){ 'WJ3q|o/
int j=stack[top--]; WQYw@M~4Q!
int i=stack[top--]; -Y/c]g
(%iCP/E3
pivotIndex=(i+j)/2; ,CQg6-[
pivot=data[pivotIndex]; @7,k0H9Moa
2G BE=T
SortUtil.swap(data,pivotIndex,j); &BJ"T
@L5s.]vg=
file://partition |]x>|Z?/u
l=i-1; nHF%PH#|o
r=j; 7,EdJ[CR$
do{ VPXUy=W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a}/ A]mu
SortUtil.swap(data,l,r); (<xl _L:*.
} '@,M
'H{
while(l SortUtil.swap(data,l,r); PFPZ]XI%F
SortUtil.swap(data,l,j); 'P3jUc)
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if((l-i)>THRESHOLD){ BBlYy5x
stack[++top]=i; 2"!s8x1$
stack[++top]=l-1; =^`?O* /;
} Y4I;-&d's
if((j-l)>THRESHOLD){ i5jsM\1j
stack[++top]=l+1; *'h J5{U
stack[++top]=j; C0 %yGLh&
} {#4F}@Q
Ni-@El99
} i9j#Tu93 f
file://new InsertSort().sort(data); [e;c)XS[
insertSort(data); ?I332,,q
} EK$3T5e
/** 7HM%Cd
* @param data @PAT|6
*/ GX;~K
private void insertSort(int[] data) { 20A`]-D
int temp; R-J^%4U`7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~"nF$DB
} u+5MrS[
} %+HZ4M+hV
} kBg8:bo~
/l1OC(hm
} ME.a * v
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归并排序: 4Be'w`Q {
l~Rd\.O
package org.rut.util.algorithm.support; @p ZjJ<9QM
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import org.rut.util.algorithm.SortUtil; 8(ej]9RObU
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/** }WDzzjDR+
* @author treeroot v8f1o$R
* @since 2006-2-2 FS^~e-A
* @version 1.0 y7~y@ 2
*/ @A'@%Zv-
public class MergeSort implements SortUtil.Sort{ w;;9YFBdM
?/|KM8
/* (non-Javadoc) mLm?yb:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>JBGR`j
*/ @|([b r|O
public void sort(int[] data) { YJu~iQ`i
int[] temp=new int[data.length]; @8*lqV2
mergeSort(data,temp,0,data.length-1); ->L> `<7(
} Hg5:>?Lw@
B,A,5SuMk
private void mergeSort(int[] data,int[] temp,int l,int r){ %z~=Jz^
int mid=(l+r)/2; L Q0e@5
if(l==r) return ; <.".,Na(J0
mergeSort(data,temp,l,mid); 4i7+'F
mergeSort(data,temp,mid+1,r); .tcdqL-'
for(int i=l;i<=r;i++){ _Wqy,L;J
temp=data; !|\l*
} Xz`0nU
int i1=l; vb6kr?-i*
int i2=mid+1; i&YWutG
for(int cur=l;cur<=r;cur++){ stQ_Ke
if(i1==mid+1) %
:h%i|
data[cur]=temp[i2++]; 6=:s3I^
else if(i2>r) 3 3zE5vr
data[cur]=temp[i1++]; Vh{(*p
else if(temp[i1] data[cur]=temp[i1++]; Z@(KZ|
else g%<n9AUl
data[cur]=temp[i2++]; MXiQWg$
} dTjDVq&Hz
} 6EeO\Qj{
|j~l%d*<w
} _"*}8{|
6H=gura&
改进后的归并排序: $*|M+ofQ
cj9C6Y!
package org.rut.util.algorithm.support; m!5Edo-;<
u}b%-:-
import org.rut.util.algorithm.SortUtil; gxx#<=`
,Qs%bq{t
/** LcZ|A;it
* @author treeroot [5!dO\-[
* @since 2006-2-2 (9R;-3vY:S
* @version 1.0 6?'7`p
*/ t{s*,X\b
public class ImprovedMergeSort implements SortUtil.Sort { k!Q{u2
eR0$CTSw
private static final int THRESHOLD = 10; c?N,Cd~q
#_{Q&QUk
/* }R11G9N.
* (non-Javadoc) Z&O6<=bg!
* tzthc*-<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jD${ZIv
*/ SA7(EJ95
public void sort(int[] data) { Re&"Q8I.8
int[] temp=new int[data.length]; [Q+k2J_h
mergeSort(data,temp,0,data.length-1); L7hRFf-o
} G[1\5dK*uR
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private void mergeSort(int[] data, int[] temp, int l, int r) { HItNd
int i, j, k; A,BYi$
int mid = (l + r) / 2; z0OxJ e
if (l == r) c_8<N7 C
return; A;
wT`c
if ((mid - l) >= THRESHOLD) UWidT+'Sa
mergeSort(data, temp, l, mid); J ZkQ/vp(
else LT"H-fTgs
insertSort(data, l, mid - l + 1); K_@?Q@#YhR
if ((r - mid) > THRESHOLD) s&Y"a,|Z
mergeSort(data, temp, mid + 1, r); kg
8Dn
else BM'!odRv
insertSort(data, mid + 1, r - mid); 2?SbkU/3|P
'NZ=DSGIy
for (i = l; i <= mid; i++) { +:"0%(
temp = data; U(#JC(E-#
} iGkysU<wcp
for (j = 1; j <= r - mid; j++) { le]~Cy0
temp[r - j + 1] = data[j + mid]; x x4GP2
} N#2ldY *
int a = temp[l]; =YTcWB
int b = temp[r]; - Z`RKR8C
for (i = l, j = r, k = l; k <= r; k++) { H>A6VDu
if (a < b) { JJM<ywPGp
data[k] = temp[i++]; 2 rr=FJ
a = temp; [orL.D]
} else { f:-l}Zj
data[k] = temp[j--]; Zskj?+1
b = temp[j]; -58q6yA
} 9 @xl{S-
} z}B39L
} Mx$&{.LFJ
Xh>($ U
/** ?:ZB'G{%E
* @param data n{i,`oQ"
* @param l *67K_<bp]
* @param i fjVy;qJ32S
*/ #K6cBfqI
private void insertSort(int[] data, int start, int len) { 50j8+xJPV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yji[Yde;|
} BqY_N8l&E
} wV"`Du7E;
} "J`&"_CyZ
} +l/v`=C
&'x~<rx
堆排序: Rh?bBAn8
~y2zl
package org.rut.util.algorithm.support; >a,D8M?
c%J6!\
import org.rut.util.algorithm.SortUtil; JD~;.3$/k
,_fz)@)
/** 4]uj+J
* @author treeroot Vh;zV Y
* @since 2006-2-2 >
:IWRc2
* @version 1.0 c&!mKMrk
*/ acR|X@\3
public class HeapSort implements SortUtil.Sort{ #F.jf2h@
!6T"J!F#
/* (non-Javadoc) ~?AEtl#&"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C=/B\G/.9
*/ {^
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public void sort(int[] data) { ^Aq0<
MaxHeap h=new MaxHeap(); :t{~Mi=T
h.init(data); ]MV8rC[\
for(int i=0;i h.remove(); <aJQV)]\
System.arraycopy(h.queue,1,data,0,data.length); wDZ<UP=X
} /N"3kK,N
UnF8#~
private static class MaxHeap{ "(^XZAU#W
hd(FOKOP
void init(int[] data){ `x#Ud)g
this.queue=new int[data.length+1]; @)?]u
U"L
for(int i=0;i queue[++size]=data; ?
T6K]~g
fixUp(size); OegeZV
} ~0a5
} 6(Pan%
`X6JZxGyd
private int size=0; &$F<]]&
Jpj=d@Of70
private int[] queue; GWnIy6TH l
zKO7`.*
public int get() { D j&~x
return queue[1]; kg[%Q]]
} /Hyz]46
^Tm`motzh
public void remove() { Ki\.w~Qs
SortUtil.swap(queue,1,size--); 8Ojqm#/f
fixDown(1); [|DKBJ
} 8AuBs;i
file://fixdown ]
3"t]U'f
private void fixDown(int k) { c+9L6}D
int j; 2}r=DAe0
while ((j = k << 1) <= size) { lmvp,BzC
if (j < size %26amp;%26amp; queue[j] j++; 4VWk/HK-!
if (queue[k]>queue[j]) file://不用交换 LH8jT
break; RZm%4_p4s
SortUtil.swap(queue,j,k); wZiUzS;v
k = j; :$MOdL[ir
} I6W`yh`I)
} z1PwupXt1
private void fixUp(int k) { <Kd(fFe
while (k > 1) { Q +^&
int j = k >> 1; -n|bi cP
if (queue[j]>queue[k]) 1cLtTE
break; d(T4Kd$r
SortUtil.swap(queue,j,k); {r,Uik-nL
k = j; wA=r]BT
} N{;!xIv
} ;sZG=y@
s[yWBew
} Cbw *?9d
&AQqI
} fu/8r%:h
hmO2s/~
SortUtil: _M&TT]a
=
xO03|T;6
package org.rut.util.algorithm; C82_)@96
`@~e<s`j
import org.rut.util.algorithm.support.BubbleSort; Y'iX
import org.rut.util.algorithm.support.HeapSort; ~t`^|cr|
import org.rut.util.algorithm.support.ImprovedMergeSort; \G" S7
import org.rut.util.algorithm.support.ImprovedQuickSort; M&Ka^h;N
import org.rut.util.algorithm.support.InsertSort; LVj1NP
import org.rut.util.algorithm.support.MergeSort; 2$JGhgDI
import org.rut.util.algorithm.support.QuickSort; 4G c
M
import org.rut.util.algorithm.support.SelectionSort; #z*,CU#S9d
import org.rut.util.algorithm.support.ShellSort; H_DCdUgC'
K p3}A$uV
/** tIsWPt]Y
* @author treeroot Zd*$^P,|
* @since 2006-2-2 RP4/:sO
* @version 1.0 yB b%#GW
*/ uJ!&T
public class SortUtil { Ms{";qiG
public final static int INSERT = 1; (vs<Fo|]
public final static int BUBBLE = 2; *'<AwG&
public final static int SELECTION = 3; M!UTqf7XL
public final static int SHELL = 4; 2Je$SE8
public final static int QUICK = 5; pP. _%5
public final static int IMPROVED_QUICK = 6; d7OygDb <
public final static int MERGE = 7; MMM
tB6
public final static int IMPROVED_MERGE = 8; 25Dl4<-Z
public final static int HEAP = 9; f%Q{}fC{*
aF{_"X2
public static void sort(int[] data) { X 'Ss#s>g
sort(data, IMPROVED_QUICK); <$~lFV
} [{znwK@
private static String[] name={ iNO>'7s7
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R'Sd'pSDN
}; h)KHc/S
jEc_!Q
private static Sort[] impl=new Sort[]{ YG "Ta|@5
new InsertSort(), L:R4&|E/t
new BubbleSort(), {f/qI`
new SelectionSort(), f-ltV<C_
new ShellSort(), 3[YG
BM(
new QuickSort(), v, $r.g;
new ImprovedQuickSort(), O\5%IfB'"
new MergeSort(), /k#-OXP~
new ImprovedMergeSort(), g 9_ zkGc7
new HeapSort() ~wvt:E,fC
}; d+9V% T
]ss[n.T0*
public static String toString(int algorithm){ zA,vp^
return name[algorithm-1]; CWj_K2=d
} 4"d,=P.{
7=G2sOC
public static void sort(int[] data, int algorithm) { S$6|KY u
impl[algorithm-1].sort(data); ewZ?+G+m
} 2w?q7N%
44]s`QyG
public static interface Sort { o<`vh*U@,4
public void sort(int[] data); JzyCeM =
} ,UNb#=it
ZoW1Cc&p
public static void swap(int[] data, int i, int j) { z+"tAVB[i
int temp = data; uZqL'l+/y
data = data[j]; B=_w9iVN
data[j] = temp; o`U}uqrO
} ZlT }cA/n
} pu-HEv}]a|