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。 yi;pn Z
插入排序: (b8ZADI*
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package org.rut.util.algorithm.support; 85_Qb2<'r
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import org.rut.util.algorithm.SortUtil; n.7-$1
/** >zo_ }A!
* @author treeroot rlQ=rNrG&E
* @since 2006-2-2 wE3fKG.
* @version 1.0 LUzn7FZk
*/ hjq@.5
public class InsertSort implements SortUtil.Sort{ *t300`x
R.KznJ
/* (non-Javadoc) 6E{(_i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2&zklXuo:
*/ 9/JBn
public void sort(int[] data) { V~sfR^FQ'
int temp; Vr:`?V9Q2(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C@3UsD\s(
} mRIBE9K+&
} ;;K
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} 97 k}{tG
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} w/e?K4
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冒泡排序: Ip|=NQL>
?|Ey WAL
package org.rut.util.algorithm.support; snYyxi
j@R"AP}
import org.rut.util.algorithm.SortUtil; * .g[vCy
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/** 5KTPlqm0qF
* @author treeroot 6[,7g&C
* @since 2006-2-2 { u3giB
* @version 1.0 eig{~3
*/ g?N^9B,$2
public class BubbleSort implements SortUtil.Sort{ |RL\2j|
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/* (non-Javadoc) Zi}jf25
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E:y^= Y
*/ n.XgGT=L
public void sort(int[] data) { -TS5g1
int temp; ?&=JGk^eJ
for(int i=0;i for(int j=data.length-1;j>i;j--){ "?^#+@LV
if(data[j] SortUtil.swap(data,j,j-1); <k 'zz:[c!
} 4BZ7R,m#.
} S1#5oy2
} c8Nl$|B
} 7c!#e=W@B
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} ?}U?Q7vx@@
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选择排序: ZgfhNI\
O1!YHo
package org.rut.util.algorithm.support; mD%IHzbn
H
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import org.rut.util.algorithm.SortUtil; sB5@6[VDI
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/** P$.$M}rMv
* @author treeroot LqLhZBU9
* @since 2006-2-2 F*_+k
* @version 1.0 .,f]'!5
*/ Z7I\\M
public class SelectionSort implements SortUtil.Sort { 5w%[|%KG:L
VRTJKi
/* Wm4C(y@
* (non-Javadoc) &Im-@rV!
* zt!7aVm
n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }tL]EW^
*/ V -_MwII-
public void sort(int[] data) { $o/i /
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int temp;
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for (int i = 0; i < data.length; i++) { U6.hH%\}@
int lowIndex = i; v'm-A d+4t
for (int j = data.length - 1; j > i; j--) { @1D3E =
if (data[j] < data[lowIndex]) { @Z5,j)
lowIndex = j; {Wndp%
} j`#H%2W\;
} 4";NT;_q5
SortUtil.swap(data,i,lowIndex); =@c;%x
} Y;@]G=a
} w3#0kl
jOd+LXPJ
} bB)$=7\
>7r%k,`
Shell排序: Zs8]A0$
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package org.rut.util.algorithm.support; jX0^1d@
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import org.rut.util.algorithm.SortUtil; R@#xPv4o%
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/** WcY $=\7
* @author treeroot -d-xsP}
s
* @since 2006-2-2 Q.fUpa v
* @version 1.0 raZkH8
*/ _5S||TuNS
public class ShellSort implements SortUtil.Sort{ [930=rF*
N) PkE>%X
/* (non-Javadoc) 9z`72(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .<Ays?
*/ ?vFtv}@\
public void sort(int[] data) { eaDR-g"
for(int i=data.length/2;i>2;i/=2){ mDk6@Gd@U
for(int j=0;j insertSort(data,j,i); {pdPp|YDZ-
} U "r)C;5
} ;NQ}c"9
insertSort(data,0,1); '<QFf
} o_BRsJy
u}P:9u&h6X
/** dc0&*/`:
* @param data ^rd%{6m
* @param j K{, '%|
* @param i Vl3-cW@p
*/ z]KJ4
private void insertSort(int[] data, int start, int inc) { X"9N<)C
int temp; * U}-Y*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #U4
f9.FY*
} 4|\
} L)4~:f)B
} @t0T+T3
|Qcj+HH.
} &8yGV i
`PUxR8y
快速排序: s}-j.jzB{
$j8CF3d.6
package org.rut.util.algorithm.support; hk$I-
O hRf&5u$
import org.rut.util.algorithm.SortUtil; g7^|(!Y%
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/** a47e
* @author treeroot n 83Dt*O
* @since 2006-2-2 f96`n+>xi
* @version 1.0 i8p$wf"aW
*/ ;Qi!~VsP;
public class QuickSort implements SortUtil.Sort{ p1hF.
=qbN?a/?2
/* (non-Javadoc) VFMn"bYOB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1GIBqs~-
*/ X&h?1lMJ /
public void sort(int[] data) { n).*=YLN
quickSort(data,0,data.length-1); KUq7O a!
} &,3s2,1U(
private void quickSort(int[] data,int i,int j){ cLRzm9
int pivotIndex=(i+j)/2; LwTdmR
file://swap /n6ZN4
SortUtil.swap(data,pivotIndex,j); 8TG|frS
UG_PrZd
int k=partition(data,i-1,j,data[j]); h?$J;xn
SortUtil.swap(data,k,j); Ptcq/f
if((k-i)>1) quickSort(data,i,k-1); f mJK+
if((j-k)>1) quickSort(data,k+1,j); cr|]\
CU*TY1%
} ,0ilNi>
/** &5.J y2hO]
* @param data 3,`M\#z%K
* @param i +0j{$MPZ
* @param j Zy.A9Bh~
* @return 8)1=5n
*/ wt;`_}g
private int partition(int[] data, int l, int r,int pivot) { N-t"CBTO
do{ N=7iQ@{1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sdiWQv
SortUtil.swap(data,l,r); mq:WBSsV
} US=K}B=g
while(l SortUtil.swap(data,l,r); K:kb&W
return l; p_%,JD
} c5uC?b].
6k![v@2R
} O*bzp-6\
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改进后的快速排序: RZKx!X4=q
s$,G5Feub
package org.rut.util.algorithm.support; PIXqd,
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import org.rut.util.algorithm.SortUtil; p|NY.N
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/** ?B$L'i[l
* @author treeroot {\NBNg(Vo
* @since 2006-2-2 I{ki))F
* @version 1.0 9W+DW_M
*/ $tI<MZ&Z
public class ImprovedQuickSort implements SortUtil.Sort { tIV{uVM[|D
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private static int MAX_STACK_SIZE=4096; $Ff6nc=
private static int THRESHOLD=10; T31F8K3x
/* (non-Javadoc) a7uL{*ZR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h oM%|,0
*/ 3
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public void sort(int[] data) { Hz[1c4)'F
int[] stack=new int[MAX_STACK_SIZE]; Yk)fBPHr
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int top=-1; m/jyc#
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int pivot; eK5~gnv,
int pivotIndex,l,r; 2{Dnfl'k
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stack[++top]=0; Qds:*]vGS
stack[++top]=data.length-1; +?ZP3vgGA
B0Ay
while(top>0){ HmkxE
int j=stack[top--]; x7G)^
int i=stack[top--]; 7=yjd)Iy9m
);yZyWDV
pivotIndex=(i+j)/2; dtTfV.y4w
pivot=data[pivotIndex]; ]Hq,Pr_+
akPd#mf
SortUtil.swap(data,pivotIndex,j); W`c$2KS?DO
N 3O!8A_
file://partition R,["w98a
l=i-1; \ltS~EuWU
r=j; LR!%iP
do{ -!mtLaLw
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .w _BA)
SortUtil.swap(data,l,r); NS""][#
} gdoaXw;Sy
while(l SortUtil.swap(data,l,r); 3Nwix_&S
SortUtil.swap(data,l,j); p:$kX9mT&
s-(c-E09
if((l-i)>THRESHOLD){ GUD]sXSj
stack[++top]=i; W8u&5#$I
stack[++top]=l-1; w1(5,~OB
} `8#xO{B1
if((j-l)>THRESHOLD){ S 1^t;{"
stack[++top]=l+1; g.blDOmlc
stack[++top]=j; [`s.fkb8
} 1*$6u5.=F
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} |,S]EHIy
file://new InsertSort().sort(data); RRYcg{g
insertSort(data); ut]UU*g^$
} fv+d3s?h
/** X2 ;72
* @param data pDJN}XtjT
*/ r#_0_I1[
private void insertSort(int[] data) { R]Z#VnL@qz
int temp; /*BK6hc
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %Ie,J5g5
} %K8YZc(&
} t6`(9o@}
} 0H.bRk/P+
kka{u[ruA
} 7fzH(H
M
#0v# {o
归并排序: K^[m--
)c1Pj#|
package org.rut.util.algorithm.support; R/fE@d2~In
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import org.rut.util.algorithm.SortUtil; F7w\ctUP
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/** wu11)HFL|z
* @author treeroot 7J`v#
* @since 2006-2-2 WBJn1
* @version 1.0 H^`J(J+
*/ xluAjOQ6
public class MergeSort implements SortUtil.Sort{ hVT>HER
J#4pA{01w
/* (non-Javadoc) sa/9r9hc+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'rFLG+W
*/ 0)\(y
public void sort(int[] data) { {iq^CHAVK
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); xaB#GdD
} tn _\E/Q
-:Fr($^
private void mergeSort(int[] data,int[] temp,int l,int r){ b "}ya/
int mid=(l+r)/2; O'^AbO=,
if(l==r) return ; Oml3=TV
mergeSort(data,temp,l,mid); {M=B5-
mergeSort(data,temp,mid+1,r); 59:kL<;S-
for(int i=l;i<=r;i++){ "R-j
temp=data; dD'KP4Io@
} n ~ &ssFC
int i1=l; C~K/yLCAi
int i2=mid+1; p`Tl)[*
for(int cur=l;cur<=r;cur++){ 6Fk[wH7
if(i1==mid+1) BT;1"l<
data[cur]=temp[i2++]; w8cnSO
else if(i2>r) yLnTIE 3)
data[cur]=temp[i1++]; bO6cv{>x
else if(temp[i1] data[cur]=temp[i1++]; fpjFO&ML
else .wWf#bB
data[cur]=temp[i2++]; qC& xuu|
} Dp#27Yzc
} s(s_v ?k
y,KZp2 j
} 1rue+GL
CN-4FI)1D9
改进后的归并排序: ?}W#j
-;HZ!Lf
package org.rut.util.algorithm.support; CI \O)iB
Bd;EI)JT
import org.rut.util.algorithm.SortUtil; $:-C9N29
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/** L"?4}U:
* @author treeroot ?;(!(<{
* @since 2006-2-2 JJM!pD\ h
* @version 1.0 0|0IIgy
*/ ,m7Z w_.
public class ImprovedMergeSort implements SortUtil.Sort { 9!2$?xqym
jE5=e</
private static final int THRESHOLD = 10; zH~g5xgh
0lcwc"_DZX
/* ov\%*z2=
* (non-Javadoc) 673G6Nk
* :'fK`G
6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {+kWK;1
*/ &@2`_%QtA
public void sort(int[] data) { @Y(7n/*
int[] temp=new int[data.length]; :,/
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mergeSort(data,temp,0,data.length-1); XC390t
} 6/(Z*L"~6k
<3=k
private void mergeSort(int[] data, int[] temp, int l, int r) { >%_i#|dE>
int i, j, k; ]i
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int mid = (l + r) / 2; rXe+#`m2
if (l == r) eB,@oo%
return; Tn38]UL
if ((mid - l) >= THRESHOLD) Nii5},
mergeSort(data, temp, l, mid); Ur""&@
else z!~{3M
insertSort(data, l, mid - l + 1); }y*rO(cu7G
if ((r - mid) > THRESHOLD) 9~iDL|0'~
mergeSort(data, temp, mid + 1, r); Na.e1A&?j
else uIJ
zz4
insertSort(data, mid + 1, r - mid); ?4Zo0DiUB
#X5Tt ;
for (i = l; i <= mid; i++) { N$ 2Iz
temp = data; vDc&m
} [{ A5BE -
for (j = 1; j <= r - mid; j++) { q'biTn]2
temp[r - j + 1] = data[j + mid]; 1gYvp9Ma
} :ZM=P3QZ
int a = temp[l]; ]tbl1=|
int b = temp[r]; }k8&T\V!
for (i = l, j = r, k = l; k <= r; k++) { wG22ffaki
if (a < b) { oOQ0f |MGp
data[k] = temp[i++]; ]ddL'>$c$
a = temp; :?#wWF.
} else { 0J=
$ A
data[k] = temp[j--]; G#'G9/Tm
b = temp[j]; *vzj(HGO
} k.H4Mf(4
} C\cZ
} 5Ak>/QF9
]}_Ohe]X
/** gGbqXG^
* @param data /"1[qT\F
* @param l OnE~0+
* @param i |X~vsM0
*/ 2QIo|$
private void insertSort(int[] data, int start, int len) { VZA>ErB
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FvBnmYnW
} %-NG eN8
} .Na'yS `J
} 7bkh")^
} L7.LFWq$S
mi sPJO&QD
堆排序: DJR r
)VxC v
package org.rut.util.algorithm.support; 6wyhL-{:
93Qx+oK]
import org.rut.util.algorithm.SortUtil; xn7bb[g;
U }}E
E~W
/** NX<Q}3cC
* @author treeroot n(Ry~Xu_
* @since 2006-2-2 [>kzQYT[
* @version 1.0 FzFP 0
*/ FOX0
public class HeapSort implements SortUtil.Sort{ gAy"W$F
')E4N+h/
/* (non-Javadoc) 88atj+N]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LO,k'gg<
*/ DEpn>
public void sort(int[] data) { =,W~^<\"
MaxHeap h=new MaxHeap(); NUX2{8gs
h.init(data); [\ppK C
for(int i=0;i h.remove(); JB!KOzw
System.arraycopy(h.queue,1,data,0,data.length); _We4%
} HwZ@T &_4
N*>&XJ#
private static class MaxHeap{ IeE6?!,)
T7XbbU
void init(int[] data){ D4QLlP
this.queue=new int[data.length+1]; ZL- ` 3x
for(int i=0;i queue[++size]=data; uy=E92n3
fixUp(size); :}fIu?hCA
} DYL \=ya1
} &vS @-K
;8<lgZ9H<
private int size=0; Kdd5ysTQ
#TY[\$BHs
private int[] queue; d0 yZ9-t
Cv1CRmqq%
public int get() { _VAX~Y]
return queue[1]; ltG|#(
} k|_LF[* Z
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public void remove() { SV_b(wP9
SortUtil.swap(queue,1,size--); nA XWbavY
fixDown(1); i.>d#S
} 17;qJ_T)
file://fixdown 4ew#@
private void fixDown(int k) { v@]\
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int j; IgtTYxI
while ((j = k << 1) <= size) { w<=-n;2
if (j < size %26amp;%26amp; queue[j] j++; se]QEd7]7
if (queue[k]>queue[j]) file://不用交换 YH$whJ`W0
break; w,zgYX&
SortUtil.swap(queue,j,k); KH76Vts
k = j; WEugm603
} ,[ M^rv
} r*4@S~;
private void fixUp(int k) { [5jXYqD=vj
while (k > 1) { 1FmqNf:V7I
int j = k >> 1; ST^{?Q
if (queue[j]>queue[k]) o^&nkR
break; cP (is!
SortUtil.swap(queue,j,k); tY$4k26
k = j; }h_=
n>
} '9q:gFO
} nM&UdKf3
,L7:3W
} *v9 {f?
Eg|C
} 8AVG pL
:l?/]K
SortUtil: B"fKv0
3r,^is
package org.rut.util.algorithm; @
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91j.%#[v'
import org.rut.util.algorithm.support.BubbleSort; e't1.%w
import org.rut.util.algorithm.support.HeapSort; .2:S0=xt<
import org.rut.util.algorithm.support.ImprovedMergeSort; Z?tw#n[T
import org.rut.util.algorithm.support.ImprovedQuickSort; F6 c1YI[
import org.rut.util.algorithm.support.InsertSort; 8&KqrA86
import org.rut.util.algorithm.support.MergeSort; 8n)3'ok
import org.rut.util.algorithm.support.QuickSort; Nc[V kJ]
import org.rut.util.algorithm.support.SelectionSort; ,O]AB
import org.rut.util.algorithm.support.ShellSort; 2 *@.hBi
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/** CaqMLi%
* @author treeroot 1q;r4$n
* @since 2006-2-2 rA#Ji~
* @version 1.0 Y!L<&
sl
*/ nfzKUJY
public class SortUtil { $ACD6u6
public final static int INSERT = 1; 0}y-DCuQ
public final static int BUBBLE = 2; |F^h>^
x
public final static int SELECTION = 3; _a~-B@2g
public final static int SHELL = 4; >^hy@m
public final static int QUICK = 5; S k&l8"
public final static int IMPROVED_QUICK = 6; b!xm=U
public final static int MERGE = 7; ^5d9n<_xnQ
public final static int IMPROVED_MERGE = 8; 1*J#:|({(
public final static int HEAP = 9; `di/nv)
BY^5z<^.
public static void sort(int[] data) { \H5{[ZUn
sort(data, IMPROVED_QUICK); p?zh4:\F+
} C1KO]e >
private static String[] name={ -$m?ShDd
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^L;k
}; Q.Ljz
Z
i@XFnt
private static Sort[] impl=new Sort[]{ CHRO9
new InsertSort(), oc3}L^aD
new BubbleSort(), (N25.}8Y
new SelectionSort(), '=eE6=m^K
new ShellSort(), <FFaaGiE>
new QuickSort(), @:"GgkyDl#
new ImprovedQuickSort(), koAM",5D
new MergeSort(), [v$NxmRu
new ImprovedMergeSort(), #[{xEVf
new HeapSort() mjz<,s`D
}; '+{dr\nJ
l]o)KM<
public static String toString(int algorithm){ PC}m.tE
return name[algorithm-1]; SQd`xbIuL
} iNAaTU
HfgK0wIi
public static void sort(int[] data, int algorithm) { ^U4|TR6mub
impl[algorithm-1].sort(data); @|GKNW#
} !HP/`R
P?P))UB5
public static interface Sort { Ho:X.Z9A^
public void sort(int[] data); !1\jD
} +w
pe<T
dECH/vJ^
public static void swap(int[] data, int i, int j) { HGjGV]N5
int temp = data; cWA$O*A
data = data[j]; E@F:U*A6%
data[j] = temp; xz$S5tgDQK
} eZWR)+aq
} @j Y_^8#S