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。 |:]}u|O
插入排序: [@_W-rA
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package org.rut.util.algorithm.support; &2bqL!k
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import org.rut.util.algorithm.SortUtil; *x:*Q \|
/** mKsJ[)#.
* @author treeroot ~REfr}0
* @since 2006-2-2 S ,x';"
* @version 1.0 HR;I}J 9
*/ _2TL>1KZt
public class InsertSort implements SortUtil.Sort{ 1Qw_P('}
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/* (non-Javadoc) sC A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qrf90F)
*/ szCB}WY
public void sort(int[] data) { IN75zn*%
int temp; Tje(hnN
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?a-5^{{
} k [LV^oEg
} }T-'""*
} M!aJKpf
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} d(yTz&u)
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冒泡排序: e%EO/ 2"
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package org.rut.util.algorithm.support; c:[ZknnCe
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import org.rut.util.algorithm.SortUtil; m(D+!I9
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/** |`xM45
* @author treeroot ,m8mh)K?0>
* @since 2006-2-2 (vp#?-i
* @version 1.0 MdN0 Y@Ll
*/ FGzKx9I9
public class BubbleSort implements SortUtil.Sort{ O?O=]s
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/* (non-Javadoc) BOWBD@y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <_c8F!K)T
*/ bObsj]
public void sort(int[] data) { 74 &q2g{
int temp; `FEa(Q+s
for(int i=0;i for(int j=data.length-1;j>i;j--){ W>5[_d
if(data[j] SortUtil.swap(data,j,j-1); TbaZFLr
} s94*uZ(C/
} [r!f&R
} ,OERDWW|6
} |Sm/s;&c6
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} u-_1)'
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选择排序: )N*Jc @Y@
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package org.rut.util.algorithm.support; +w-J;GLSy
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import org.rut.util.algorithm.SortUtil; !*f$*,=^
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/** C T\@>!'f
* @author treeroot 7WwE] ^M
* @since 2006-2-2 ~GcWG4
* @version 1.0 ?(n v_O
*/ NWP!V@WG
public class SelectionSort implements SortUtil.Sort { }=}wLm#&1
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/* JHXkQz[Jb
* (non-Javadoc) yRIXUCy
* ;s;3cC!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xW]65iav
*/ a9UXg<4
public void sort(int[] data) { kIX1u<M~
int temp; s<rV1D
for (int i = 0; i < data.length; i++) { l*6Zh"o:
int lowIndex = i; #wo
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for (int j = data.length - 1; j > i; j--) { uovv">Uw
if (data[j] < data[lowIndex]) { [h8s0
lowIndex = j; 6]4#8tR1_
} /M+Du,
} 4"_`Mu_%
SortUtil.swap(data,i,lowIndex); aZ+><1TD
} [F'|KcE3
} 3%hq<
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} i")0 3b
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Shell排序: s*s~yH6
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package org.rut.util.algorithm.support; Bp3E)l
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import org.rut.util.algorithm.SortUtil; JXM]tV
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/** DY9]$h*y
* @author treeroot IvT><8<G
* @since 2006-2-2 y)U?.@
* @version 1.0 N+h05`
*/ l?=\9y
public class ShellSort implements SortUtil.Sort{ D}q"^"#T
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/* (non-Javadoc) _'LZf=V0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -(t7>s
*/ /("7*W 2
public void sort(int[] data) { :nQlS
for(int i=data.length/2;i>2;i/=2){ I O:*F0
for(int j=0;j insertSort(data,j,i); h%krA<G9
} w4vV#C4X
} t*=[RS*
insertSort(data,0,1); ATl?./T u
} W*t]
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/** @phVfP"M
* @param data fEX=csZ86
* @param j 5&V=$]t
* @param i ])o{!}QUl\
*/ )@X0'X<
private void insertSort(int[] data, int start, int inc) { aL( hWE
int temp; 1[^YK6a/
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0z8?6~M;<
} Jsysk $R
} !R"W2 Z4h
} \gk.[={^P
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} 1^4:l!0D
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快速排序: @kqxN\DE
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package org.rut.util.algorithm.support; +yp:douERi
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import org.rut.util.algorithm.SortUtil; d=PX}o^
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/** jYFJk&c
* @author treeroot \&5V';
* @since 2006-2-2 !Aw^X} C
* @version 1.0 R7kkth
*/ `oJQA$UD
public class QuickSort implements SortUtil.Sort{ r<ucHRO#
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/* (non-Javadoc) =/!lK&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y%SxQA+\
*/ 3R3H+W0{
public void sort(int[] data) { ~w+I2oS$
quickSort(data,0,data.length-1); 4b`E/L}2
} ;:fW]5"R
private void quickSort(int[] data,int i,int j){ e@Lxduq
int pivotIndex=(i+j)/2; FfdB%
file://swap (Jk&U8y
SortUtil.swap(data,pivotIndex,j); q(6.VU@
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int k=partition(data,i-1,j,data[j]); 5 wrRtzf
SortUtil.swap(data,k,j); nt#9j',6Rn
if((k-i)>1) quickSort(data,i,k-1); dRX~eIw
if((j-k)>1) quickSort(data,k+1,j); 94rSB}b.O
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} 9{*{Ba
/** UqOBr2UmG
* @param data "`$,qvNN
* @param i >u?.gJm ~
* @param j OG/b5U
* @return .eR1\IAm
*/ H#~gx_^U
private int partition(int[] data, int l, int r,int pivot) { ,~1'L6Ri?
do{ L"qJZU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dU$VRgP/
SortUtil.swap(data,l,r); ; :P4~R
} eQuu\/z*H
while(l SortUtil.swap(data,l,r); HIXAA?_eh=
return l; JWixY/
} ^#HaH
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} H<(F$7Q!\
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改进后的快速排序: 2.D2
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package org.rut.util.algorithm.support; 566!T_
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import org.rut.util.algorithm.SortUtil; y9r4]45
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/** +e>SK!kB7
* @author treeroot (/e&m=~
* @since 2006-2-2 f#0HiE!
* @version 1.0 m+<&NDj.
*/ #\0m(v
public class ImprovedQuickSort implements SortUtil.Sort { /4G1,T_,
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private static int MAX_STACK_SIZE=4096; |U%NPw5
private static int THRESHOLD=10; ,/\`Rc^n
/* (non-Javadoc) r#sg5aS7O|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Y#8.sr
*/ >)kKP8l7
public void sort(int[] data) { l<v{8:,e #
int[] stack=new int[MAX_STACK_SIZE]; JQV%W+-@
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int top=-1; GV0\+A"vD
int pivot; |+Y-i4t
int pivotIndex,l,r; _:r8UVAT.
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stack[++top]=0; f%]@e9dD
stack[++top]=data.length-1; hX.cdt_?
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while(top>0){ 16iTE-J_
int j=stack[top--]; UPhO=G
int i=stack[top--]; JW
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pivotIndex=(i+j)/2; kR<sSLEb
pivot=data[pivotIndex]; f2WVg;Z
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SortUtil.swap(data,pivotIndex,j); h/Mt<5
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file://partition yKML{N1D
l=i-1; o?baiOkH
r=j; .>"xp6
do{ '12m4quO
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qs]W2{-4~
SortUtil.swap(data,l,r); y\FQt];z)
} u$\.aWol
while(l SortUtil.swap(data,l,r); #{6VdWZ
SortUtil.swap(data,l,j); xWxHi6U(
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if((l-i)>THRESHOLD){ mdc?~?? 8
stack[++top]=i; A;co1,]gR
stack[++top]=l-1; f(Xin3#'
} $H<_P'h-B
if((j-l)>THRESHOLD){ o?a2wY^_
stack[++top]=l+1; L4 po1
stack[++top]=j; 0~nX7
} Ua}R3^_)a
{!I`EN]
} OxJHhF
file://new InsertSort().sort(data); r Ea(1(I
insertSort(data); QbJ7$, 4
} 1uo-?k
/** VzT*^PFBg
* @param data XRPJPwes]
*/ < se ~wR
private void insertSort(int[] data) { $O |Xq7dp
int temp; #un'?]tZF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &* VhtT?=5
} >!fTWdD^
} B&MDn']fV/
} lMgguu~qg
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} L'wR$
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归并排序: gW~YB2 $
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package org.rut.util.algorithm.support; 4-bM90&1t
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import org.rut.util.algorithm.SortUtil; \#[DZOI~
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/** 94!}
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* @author treeroot _N5pxe`
* @since 2006-2-2 #'/rFT4{v
* @version 1.0 (cVIjo+::
*/ }0&Fu?sP
public class MergeSort implements SortUtil.Sort{
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/* (non-Javadoc) pW[TufTa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q>%B @'
*/ PS~_a
public void sort(int[] data) { YMo8C(
int[] temp=new int[data.length]; %RW*gUvc]
mergeSort(data,temp,0,data.length-1); (\qf>l+*
} `@y~ JNf!
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private void mergeSort(int[] data,int[] temp,int l,int r){ J{4=:feIC?
int mid=(l+r)/2; ZKI8x1>Iq
if(l==r) return ; D?BegF
mergeSort(data,temp,l,mid); r;@0F
mergeSort(data,temp,mid+1,r); Eq_@xT0>
for(int i=l;i<=r;i++){ 2 4od74\
temp=data; IfH/~EtX
} W2<'b05
int i1=l; [Vbdsu9
int i2=mid+1; ;-JF1p 7;
for(int cur=l;cur<=r;cur++){ b0}dy\dnQ
if(i1==mid+1) m2m
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data[cur]=temp[i2++]; ,tXI*R
else if(i2>r) $\m:}\%p
data[cur]=temp[i1++]; h8WM4
PK
else if(temp[i1] data[cur]=temp[i1++]; LTf)`SN %'
else <mJ8~
data[cur]=temp[i2++]; 0=+feB1T
} b|V<Kp
} &am<_Tn*3
fx>QP?Z
} U^}7DJ
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改进后的归并排序: I`+,I`~u
R.1.LB
package org.rut.util.algorithm.support; #y&5pP:@
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import org.rut.util.algorithm.SortUtil; otaRA
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/** w.rcYywI
* @author treeroot B|o@|zF
* @since 2006-2-2 J<0sT=/2$
* @version 1.0 papMC"<g$
*/ 7Tp+]"bL
public class ImprovedMergeSort implements SortUtil.Sort { fNda&
C\{ KB@C\*
private static final int THRESHOLD = 10; |A68+(3u
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/* 1Y"9<ry
* (non-Javadoc) %V1j M
* N~b0 b;e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i\uj>;B
*/ IT#Li
public void sort(int[] data) { |"}7)[BW}
int[] temp=new int[data.length]; 8@doKOA~T
mergeSort(data,temp,0,data.length-1); I@qGDKz;
} M]%dFQ
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private void mergeSort(int[] data, int[] temp, int l, int r) { ,n%b~.$:v5
int i, j, k; ,dd1/zm
int mid = (l + r) / 2; ml2/}}
if (l == r) bp" @p:
return; 'PrBa[%
if ((mid - l) >= THRESHOLD) GfSD%"
mergeSort(data, temp, l, mid); h}tC+_"D
else {ZdF6~+H(!
insertSort(data, l, mid - l + 1); 7'At_oG
if ((r - mid) > THRESHOLD) EajJv>X7
mergeSort(data, temp, mid + 1, r); d %FLk=]
else 0i5S=L`j
insertSort(data, mid + 1, r - mid); (:]+IjnE
%*K zP{
for (i = l; i <= mid; i++) { /:!l&1l:p
temp = data; K8&) kfyI
} 'cu14m_
for (j = 1; j <= r - mid; j++) { oP
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temp[r - j + 1] = data[j + mid]; ?x 0gI
} : &nF>
int a = temp[l]; 48S
NI
int b = temp[r]; yIr0D6L
for (i = l, j = r, k = l; k <= r; k++) { /]0SF_dZ
if (a < b) { 2&pE
data[k] = temp[i++]; }l} _'FmQ
a = temp; FbMtor
} else { y5KeUMcu
data[k] = temp[j--]; LRaO}-<b
b = temp[j]; {2Ew^Li
} :
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} s1sn,?
} 7}MnvWP
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/** g[O
* @param data 7K&Uu3m
* @param l 4o";p}[b
* @param i /oJ &