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。 UKtSm%\
插入排序: T95t"g?p
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package org.rut.util.algorithm.support; |3shc,7
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import org.rut.util.algorithm.SortUtil; 'yY>as
/** ]~0}=,H$N
* @author treeroot !'G~k+
* @since 2006-2-2 YoKs:e2/:
* @version 1.0 ,LhCFw{8?~
*/ 0uvzxmN
public class InsertSort implements SortUtil.Sort{ CMW,slC_3
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/* (non-Javadoc) mi,&0xDea
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z=?aEU$7
*/ S`!-Cal`n
public void sort(int[] data) { -!e7L>w
int temp; vLT0ETHg6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZnW@YC#9
} W*N$'%
} Bv6K$4
} By)u-)g9
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} 5/MKzoB
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冒泡排序: -/P\"c
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package org.rut.util.algorithm.support; SaOYu &>
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import org.rut.util.algorithm.SortUtil; Gl}Qxv#$
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/** U_B((Z(g
* @author treeroot Yg9joNBh
* @since 2006-2-2 @?
c2)0
* @version 1.0 *L4`$@l8
*/ Lel|,mc`k2
public class BubbleSort implements SortUtil.Sort{ QDx$==Fo
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/* (non-Javadoc) uXjP`/R|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) em{(4!W>
*/ -7
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public void sort(int[] data) { oczG|_
int temp; `=lc<T^
for(int i=0;i for(int j=data.length-1;j>i;j--){ "N?+VkZEv
if(data[j] SortUtil.swap(data,j,j-1); u #w29Pm
} @p 6<Lw_E
} kM8{Cw
} v\tEVhm
} PwB1]p=
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} G<|8?6bq#
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选择排序: 42J{aJVH
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package org.rut.util.algorithm.support; (Qo I<j""
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import org.rut.util.algorithm.SortUtil; (xHf4[[u
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/** z`UhB%-?
* @author treeroot >TkE~7?l
* @since 2006-2-2 6 5N~0t
* @version 1.0 #X 52/8G
*/ j)C,%Ol
public class SelectionSort implements SortUtil.Sort { H,nec<Jp
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/* {(U %i\F\
* (non-Javadoc) {!t7[Ctb
* eq(am%3~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0j"8@<
*/ }X*Riu7gk
public void sort(int[] data) { li~d?>
int temp; [I!6PGx
for (int i = 0; i < data.length; i++) { .qMOGbd?
int lowIndex = i; 3b' QLfU
for (int j = data.length - 1; j > i; j--) { gL_Y,A~Q{
if (data[j] < data[lowIndex]) { 3 @ak<9&
lowIndex = j; 'u4<BQVV[
} }by;F9&B
}
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SortUtil.swap(data,i,lowIndex); u/cg|]x&T
} a,2'+Tlo
} $,+O9Et
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} #wL
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Shell排序: T}V!`0vKw
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package org.rut.util.algorithm.support; qlL`jWJ
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import org.rut.util.algorithm.SortUtil; ]E\n9X-{
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/** T!Hb{Cg*
* @author treeroot [0"'T[ok
* @since 2006-2-2 Llr>9(|
* @version 1.0 Vn*tpbz
*/ > ;/l)qk,
public class ShellSort implements SortUtil.Sort{ Zt.'K(]2h
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/* (non-Javadoc) j@YU|-\qh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZI= %JU(
*/ "@??Fw!
public void sort(int[] data) { At-U2a#J{
for(int i=data.length/2;i>2;i/=2){ $s9Vrw0Z
for(int j=0;j insertSort(data,j,i); {r@Ty*W}
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} C(00<~JC
} S30?VG9U0f
insertSort(data,0,1); Z.92y
} UrqRx?#
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/** UK<Nj<-'t
* @param data zIh['^3.n
* @param j T6 '`l?H`;
* @param i bbrXgQ`s+w
*/ c-B
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private void insertSort(int[] data, int start, int inc) { vI>>\.ED
int temp; .zi_[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o4|M0
} E[/\7v\
} SQX:7YF~
} N<~t3/Nm
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} 8C*c{(4
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快速排序: z^'gx@YD*v
S:h{2{
package org.rut.util.algorithm.support; ~`aa5;Ab_
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import org.rut.util.algorithm.SortUtil; |Y?HA&
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/** 9I}-[|`u
* @author treeroot eAE`#t
* @since 2006-2-2 7S}_F^
* @version 1.0 0*f)=Q'
*/ $<}$DH_Y
public class QuickSort implements SortUtil.Sort{ '.:z&gSqx0
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/* (non-Javadoc) &J+CSv,39
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wne,e's}
*/ LDPUD'
public void sort(int[] data) { `aciXlqIF
quickSort(data,0,data.length-1); kqFP)!37
} '<"s \,
private void quickSort(int[] data,int i,int j){ @7IIM{
int pivotIndex=(i+j)/2; `@`CG[-9
file://swap 3kybLOG
SortUtil.swap(data,pivotIndex,j); )h7<?@wv&
e )d`pQ6
int k=partition(data,i-1,j,data[j]); lhy*h_>
SortUtil.swap(data,k,j); ?l9XAWt\
if((k-i)>1) quickSort(data,i,k-1); D]zwl@sRX:
if((j-k)>1) quickSort(data,k+1,j); 8X[:j&@
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} ,J+}rPe"sf
/** 'uBu6G
* @param data 4y|BOVl
* @param i 'Gj3:-xqL
* @param j 9Z4nAc
* @return ]n6#VTz*
*/ ]s<[D$ <,
private int partition(int[] data, int l, int r,int pivot) { fdFo# P
do{ }\B><E{G
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pFOx>u2`a
SortUtil.swap(data,l,r); 0Tx6zO
} qLD
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while(l SortUtil.swap(data,l,r); Q'=x|K#xj
return l; dYJ(!V&
} X%
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} F3On?x)
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改进后的快速排序: $a.JSXyxL
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package org.rut.util.algorithm.support; Hj^1or3R]
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import org.rut.util.algorithm.SortUtil; -t!~%_WCv
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/** rNXQf'*I
* @author treeroot zdB^S%cztS
* @since 2006-2-2 ~vm%6CABM
* @version 1.0 Z^3rLCa
*/ m*&]!mM"0G
public class ImprovedQuickSort implements SortUtil.Sort { ?9
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private static int MAX_STACK_SIZE=4096; +$ 'Zf0U
private static int THRESHOLD=10;
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/* (non-Javadoc) E(>=rD /+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 75T%g!c#
*/ (7wc *#}
public void sort(int[] data) { 5_GYrR2
int[] stack=new int[MAX_STACK_SIZE]; M\uiq38
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int top=-1; 11Q1AN
int pivot; 0CnOL!3.I
int pivotIndex,l,r; em%4Ap
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stack[++top]=0; <? q?Mn
stack[++top]=data.length-1; YvaK0p0Z
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while(top>0){ J!dm-L
int j=stack[top--]; D+l AhEN
int i=stack[top--]; .s?L^Z^
#NEE7'&S
pivotIndex=(i+j)/2; L>jY.d2w=K
pivot=data[pivotIndex]; ]C!gQq2'a
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SortUtil.swap(data,pivotIndex,j); ha]VWt%}
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file://partition WlOmJtt4)
l=i-1; |3('
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r=j; 1+_`^|eK
do{ )1?y 8_B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f z'@_4hg
SortUtil.swap(data,l,r); LBw1g<&
} ^pp\bVh2Q]
while(l SortUtil.swap(data,l,r); I ce~oz)
SortUtil.swap(data,l,j); KI"#f$2&
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if((l-i)>THRESHOLD){ ~[t[y~Hup
stack[++top]=i; zfJT,h-{
stack[++top]=l-1; g|o,uD
} qU \w=
if((j-l)>THRESHOLD){ `'DmDg
stack[++top]=l+1; 5AFJC?
stack[++top]=j; k
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} .YtKS
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} R$R *'l
file://new InsertSort().sort(data); !z\h|wU+
insertSort(data); \1k79 c
} =/@D8{pU
/** E^B'4
* @param data &l}^iP'%!
*/ aC]$k'71
private void insertSort(int[] data) { /2&c$9=1
int temp; LQ@"Xe]5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u+9hL4
} k
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} 1I%w?^sm_
} /ixp&Z|7
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} NDN7[7E
nGC/R&
归并排序: KYB`D.O
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package org.rut.util.algorithm.support; akmkyrz '&
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import org.rut.util.algorithm.SortUtil; CXH&U@57{
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/** dB{Q"!
* @author treeroot l|u>Tb|V
* @since 2006-2-2 !Lu2
* @version 1.0 ]}V<*f
*/ i}cRi&2[
public class MergeSort implements SortUtil.Sort{ ncaT?~u j
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/* (non-Javadoc) u^&^UxCA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y5vvu>nd
*/ zrvF]|1UP
public void sort(int[] data) { AzPu)
int[] temp=new int[data.length]; "fb[23g%@k
mergeSort(data,temp,0,data.length-1); Q-(zwAaE
} G?yLo 'Ulo
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private void mergeSort(int[] data,int[] temp,int l,int r){ >>,e4s,
int mid=(l+r)/2;
,>:U2%
if(l==r) return ; 2_>N/Z4T
mergeSort(data,temp,l,mid); {4l8}w
mergeSort(data,temp,mid+1,r); _?nL+\'V
for(int i=l;i<=r;i++){ [|v][Hwv
temp=data; \P[Y`LYL
} kBS9tKBWg
int i1=l; q9B$"n
int i2=mid+1; QL(n} {.%
for(int cur=l;cur<=r;cur++){ Lw1Yvtn
if(i1==mid+1) !n`fTK<$
data[cur]=temp[i2++]; 59LG{R2
else if(i2>r) Usvl}{L[
data[cur]=temp[i1++]; d z|or9&
else if(temp[i1] data[cur]=temp[i1++]; 28-RC>,@}
else {$oj.V 4
data[cur]=temp[i2++]; &0d#Y]D4`
} b1cy$I
} 'B|JAi?
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} /l3V3B7
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改进后的归并排序: +L$Xv
8|gIhpO?^
package org.rut.util.algorithm.support; dRYqr}!%n
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import org.rut.util.algorithm.SortUtil; Cp\6W[2+B
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/** Dm981t>wL
* @author treeroot 10Q ]67
* @since 2006-2-2 !aUs>1i
* @version 1.0 #mxPw
*/ q])K,)
public class ImprovedMergeSort implements SortUtil.Sort { }{Pp]*I<A
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private static final int THRESHOLD = 10; ROI7eU
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/* }J}-//[A
* (non-Javadoc) %UrueMEO
* g _9C*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `bq<$e
*/ w7L{_aom
public void sort(int[] data) { b!t0w{^w
int[] temp=new int[data.length]; rI{; I DV
mergeSort(data,temp,0,data.length-1); Z-%\
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} ic:zsuEm
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private void mergeSort(int[] data, int[] temp, int l, int r) { #\{l"-
int i, j, k; 38B2|x
int mid = (l + r) / 2; 4>
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if (l == r) &ANf!*<\E
return; b=C*W,Q_#
if ((mid - l) >= THRESHOLD) As&Sq-NWf
mergeSort(data, temp, l, mid); (MM]N=Tw4
else yZY \MB/
insertSort(data, l, mid - l + 1); qz_7%c]K[
if ((r - mid) > THRESHOLD) LBeF&sb6
mergeSort(data, temp, mid + 1, r); )MVz$h{c.]
else Pm6pv;WK
insertSort(data, mid + 1, r - mid); K-)]
1BG
M)Z7k/=<P
for (i = l; i <= mid; i++) { ;fTKfa
temp = data; HQdxL*N%^
} FjHv
for (j = 1; j <= r - mid; j++) {
z_$% -6
temp[r - j + 1] = data[j + mid]; Y(ykng
} 3DX*gsx(
int a = temp[l]; ^CYl\.Y@
int b = temp[r]; Qp5VP@t
for (i = l, j = r, k = l; k <= r; k++) { ^LnTOdAE
if (a < b) { B3`5O[6
data[k] = temp[i++]; #lo6c;*m5
a = temp; 0],r0
} else { NG=-NxEcN
data[k] = temp[j--]; :`#d:.@]o@
b = temp[j]; QO:!p5^:
} /{J4:N'B>
} rBzuKQK}J
} rgQOj^xKv^
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/** x;KOqfawv
* @param data Tk[ $5u*,
* @param l 4"(Bu/24
* @param i EWhK0Vej=
*/ 9rX&uP)j^#
private void insertSort(int[] data, int start, int len) { $99n&t$Y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oCv.Ln1;Z
} t>RY7C;PuS
} C==hox7b
} M<Ncb
} QVT5}OzMt
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堆排序: ?zMHP#i
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package org.rut.util.algorithm.support; H2 {+)
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import org.rut.util.algorithm.SortUtil; x_}:D *aI
Mj3A5;#
/** h2A <" w
* @author treeroot qA7>vi%
* @since 2006-2-2 k"%~"9
* @version 1.0 2zA4vZkbcw
*/ :pY/-Cgv
public class HeapSort implements SortUtil.Sort{ +o{R _
M/'sl;
/* (non-Javadoc) U}[d_f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wmL'F:UP
*/ UhWNl]Z
public void sort(int[] data) { )EuvRLo{S7
MaxHeap h=new MaxHeap(); HWrO"b*tO
h.init(data); {]!mrAjD
for(int i=0;i h.remove(); e]"W!KcD9
System.arraycopy(h.queue,1,data,0,data.length); Fyx|z'4b
} {4}yKjW%z
pj{`';
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private static class MaxHeap{ =ho}oL,ZO
wssRA?9<
void init(int[] data){ n)-$e4u2
this.queue=new int[data.length+1]; {6|G@""O
for(int i=0;i queue[++size]=data; %XDc,AR[
fixUp(size); u%KTNa0
} 'F3f+YD
} aiUY>M#|
TER=*"!
private int size=0; (t
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private int[] queue;
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g6
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public int get() { 7kLz[N6Ll
return queue[1]; CyFrb`%
} (Z q/
jD]~ AwRJ
public void remove() { 6I4\q.^qw
SortUtil.swap(queue,1,size--); ]@c+]{
fixDown(1); A RuA<vQ
}
Y_IF;V\
file://fixdown r'r%w#=`t
private void fixDown(int k) { jXx<`I+]
int j; Yui3+}Ms
while ((j = k << 1) <= size) { F#Ryu~,"
if (j < size %26amp;%26amp; queue[j] j++; 3{64 @s
if (queue[k]>queue[j]) file://不用交换 {X+3;&