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。 _>kc:
插入排序: ",Vx.LV
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package org.rut.util.algorithm.support; "` cP V){]
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import org.rut.util.algorithm.SortUtil; J:>o\%sF
/** |YyNqwP`,
* @author treeroot un -h%-e|
* @since 2006-2-2 Ql l{;A
* @version 1.0 5(hv|t/a
*/ x=Oy 6"
public class InsertSort implements SortUtil.Sort{ D1 v0`od'
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/* (non-Javadoc) S-Vj$asv!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /F~/&p1<\k
*/ x9a\~XL>a
public void sort(int[] data) { i20y\V
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int temp; knph549
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N[Ei%I
} US"g>WLwJ
} JS%LJ_J
} w5~j|c=_W
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} xS5 -m6/
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冒泡排序: cc_'Kv!
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package org.rut.util.algorithm.support; 0H^*VUyW/
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import org.rut.util.algorithm.SortUtil; Lw_|o[I}
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/** udA@9a^;
* @author treeroot PuGs%{$(h
* @since 2006-2-2 f+n {9Hz
* @version 1.0 ~wv$uL8y
*/ $L6R,%c
public class BubbleSort implements SortUtil.Sort{ 5V =mj+X?
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/* (non-Javadoc) V@-Q&K#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hv^Bw{"/R
*/ 2zh-ms
public void sort(int[] data) { tp7$t#
int temp; ;R#RdUFH
for(int i=0;i for(int j=data.length-1;j>i;j--){ Rk#'^}
if(data[j] SortUtil.swap(data,j,j-1); y2s(]#8
} j=M%*`@
} BSgT
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} 7g+T
} 42"nbJ
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选择排序: ,f:K)^yD
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package org.rut.util.algorithm.support; H{=G\N{
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import org.rut.util.algorithm.SortUtil; 2z;3NUL$n
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/** j8[U}~*^
* @author treeroot MkJBKS
* @since 2006-2-2 qAH^BrJ
* @version 1.0 *!&?Xy%\"j
*/ ,pGA|ob
public class SelectionSort implements SortUtil.Sort { tJ >>cFx
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/* vn$=be8l4
* (non-Javadoc) `:V'E>B
* :dULsl$Nz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6?<lS.s
*/ s=jYQ5nv
public void sort(int[] data) { $9Bzq_!
int temp; vCJa%}
for (int i = 0; i < data.length; i++) { ny1O- `!1
int lowIndex = i; md'wre3
for (int j = data.length - 1; j > i; j--) { 0{bl^#$f
if (data[j] < data[lowIndex]) { Er~KX3vF
lowIndex = j; +ynhN\S$/
} wyB]!4yy,
} * BR#^Wt
SortUtil.swap(data,i,lowIndex); %~Rg`+
} Zf!Q4a"
} ,;w~ VZ4
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} sV{\IgH/x
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Shell排序: &Y=~j?~Xm
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package org.rut.util.algorithm.support; hZ
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import org.rut.util.algorithm.SortUtil; M NwY
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/** Ul]7IUzsu
* @author treeroot `j)56bR
* @since 2006-2-2 W5`p Qdk
* @version 1.0 ?VE'!DW
*/ l_:P|
public class ShellSort implements SortUtil.Sort{ AkS16A
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1aRTvaGo
*/ bs)wxU`Q*
public void sort(int[] data) { \l/}` w
for(int i=data.length/2;i>2;i/=2){ -sJD:G,%
for(int j=0;j insertSort(data,j,i); q&v~9~^}d
} E:**gvfq
} B?8*-0a'[
insertSort(data,0,1); 8Z\q)T
} c8uw_6#r(D
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/** ?|W3RK;
* @param data Bt@?l]Y
* @param j zc)nDyn
* @param i E#(e2Z=
*/ 4uoZw3O
private void insertSort(int[] data, int start, int inc) { QH(&Cu,
int temp; k $gcQ:|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Sj(>G;
} vJ'22)n
} {*O+vtir%
} Bv@p9 ]
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快速排序: ZXYyG`3+
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package org.rut.util.algorithm.support; a}NB6E)-
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import org.rut.util.algorithm.SortUtil; Kj
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/** V9"R8*@-
* @author treeroot ig.Z,R3@r
* @since 2006-2-2 v;
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* @version 1.0 v\?J=|S+
*/ ~v2(sRJ
public class QuickSort implements SortUtil.Sort{ 7MrHu2rZ=
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/* (non-Javadoc) A~vx,|I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e Fz$h2*B
*/ 4_QfM}Fyp
public void sort(int[] data) { t.;._'
quickSort(data,0,data.length-1); #bt f|\D
} 9;7"S.7AV
private void quickSort(int[] data,int i,int j){ @B>D>B
int pivotIndex=(i+j)/2; 7_s+7x =
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SortUtil.swap(data,pivotIndex,j); >^g2Tg:
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int k=partition(data,i-1,j,data[j]); A? B+
SortUtil.swap(data,k,j); `H:`JBe=+[
if((k-i)>1) quickSort(data,i,k-1); )YEAk@h@
if((j-k)>1) quickSort(data,k+1,j); +:jonN9d
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} +?"F=.SZ
/** KQ]sUNH
* @param data ZXb{-b?[`
* @param i M1m]1<
* @param j Xv!Gg6v6
* @return &K'*67h
*/ lJFy(^KQG,
private int partition(int[] data, int l, int r,int pivot) { w#A\(z%;x
do{ i,;eW&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z-gMk@l
SortUtil.swap(data,l,r); d6tv4Cf
} sNpA!!\PM
while(l SortUtil.swap(data,l,r); 6}R*7iMs
return l; Qm3F=*)d
} B6IKD
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} AzJ;EtR
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改进后的快速排序: GP4!t~"1
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package org.rut.util.algorithm.support; 4bL *7bA
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import org.rut.util.algorithm.SortUtil; =6ru%.8U,
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/** ; ,sNRES3
* @author treeroot N}n3 +F
* @since 2006-2-2 CQ6I4k
* @version 1.0 H0"'jd
*/ J'ce?_\?PY
public class ImprovedQuickSort implements SortUtil.Sort { (S W6?5
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private static int MAX_STACK_SIZE=4096; Gu$J;bXVj
private static int THRESHOLD=10; e6_8f*o|s
/* (non-Javadoc) pEcYfj3M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L%$-?O|
*/ 7:LEf"vRZ
public void sort(int[] data) { xP>cQEL ot
int[] stack=new int[MAX_STACK_SIZE]; GNM>hQ)h:
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int top=-1; KZg2`8F
int pivot; z0+JMZ/
int pivotIndex,l,r; g9^\QYh!
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stack[++top]=0; Q .Nw#r+m
stack[++top]=data.length-1; :atd_6
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while(top>0){ QpQ 2hNf
int j=stack[top--]; ~xY"P)(x;
int i=stack[top--]; ZJWpb
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pivotIndex=(i+j)/2; B6&[_cht
pivot=data[pivotIndex]; ~x9J&*zxM
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SortUtil.swap(data,pivotIndex,j); Heh&;c
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file://partition 6 L4\UTr
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r=j; %E@o8
do{ m_Ed[h/I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tik*[1it
SortUtil.swap(data,l,r); | WJ]7C
} \PT!mbB?
while(l SortUtil.swap(data,l,r); g)Hsd0
SortUtil.swap(data,l,j); YC 4c-M
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if((l-i)>THRESHOLD){ 4rL`||
stack[++top]=i; /q>ExXsEC
stack[++top]=l-1; bf.+Ewb(
} tgCp2`n
if((j-l)>THRESHOLD){ U1/I(w
stack[++top]=l+1; +~G:z|k
stack[++top]=j; f@ |[pT
} [Uq`B&F:
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} <7ANXHuSW
file://new InsertSort().sort(data); `
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insertSort(data); "2C}Pr,p8
} [g@qZ5I.
/** N
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* @param data Gev\bQa
*/ p#4*:rpq4
private void insertSort(int[] data) { |=:@<0.'
int temp; X:`=\D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZhCz]z~tj6
} /cdLMm:
} 8wd["hga<%
} 9+m>|"F0
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} uZ_?x~V/
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归并排序: }03?eWk/y
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package org.rut.util.algorithm.support; sdCG}..`
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import org.rut.util.algorithm.SortUtil; fFbJE]jW
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/** )Rbt0
* @author treeroot S9l po_!z
* @since 2006-2-2
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* @version 1.0 YY tVp_)
*/ Y'P^]Q=}_#
public class MergeSort implements SortUtil.Sort{ AFsieJ
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/* (non-Javadoc) +|S)Mm8-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BR@gJ(2
*/ LC=M{\
public void sort(int[] data) {
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int[] temp=new int[data.length]; 3`SH-"{j%
mergeSort(data,temp,0,data.length-1); %jj-\Gz!
} W^[QEmyn
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private void mergeSort(int[] data,int[] temp,int l,int r){ /J-.K*xKt
int mid=(l+r)/2; &,p6lbP
if(l==r) return ; K($+ILZ
mergeSort(data,temp,l,mid); 9({ 9 r[U
mergeSort(data,temp,mid+1,r); ;6 d-+(@
for(int i=l;i<=r;i++){ )N^fSenFBn
temp=data; c{D<+XM
} ]S?G]/k}
int i1=l; 2.);OFk+
int i2=mid+1; 7?k3jDK
for(int cur=l;cur<=r;cur++){ W=S^t_F
if(i1==mid+1) ^oC>,%7
data[cur]=temp[i2++]; qrOesSdc
else if(i2>r) j3w~2q"r
data[cur]=temp[i1++]; ~IO'"h'w
else if(temp[i1] data[cur]=temp[i1++]; &=%M("IlD
else ;A"i.:ZT
data[cur]=temp[i2++]; q2B'R
} wH=7pS"s
} b?Q$UMAbH
w(+L&IBC
} ?en-_'}~a
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改进后的归并排序: ||cI~qg
ScInOPb'K
package org.rut.util.algorithm.support; 4>Ht_B<<
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import org.rut.util.algorithm.SortUtil; ,{iMF
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/** g] IPNW^n
* @author treeroot =Ldf#8J
* @since 2006-2-2 p|0SA=?k"
* @version 1.0 >3 p8o@:
*/ *hFJI9G
public class ImprovedMergeSort implements SortUtil.Sort { UDkH'x$=
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private static final int THRESHOLD = 10; e5FF'~A%]
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/* 56C'<#
* (non-Javadoc) _8`S&[E?
* P%w!4v~"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |,.1=|&u
*/ ~|{e"!(}
public void sort(int[] data) { g
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int[] temp=new int[data.length]; V.Lk70 \
mergeSort(data,temp,0,data.length-1); @Py'SH!-
} I)%bOK]
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private void mergeSort(int[] data, int[] temp, int l, int r) { Rdj3dg'<
int i, j, k; rf^IJY[
int mid = (l + r) / 2;
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if (l == r) 0 >(hiTy<
return; W1M Bk[:Q
if ((mid - l) >= THRESHOLD) 4ee-tKH
mergeSort(data, temp, l, mid); 0Iyb}
else '|tmmoY6a:
insertSort(data, l, mid - l + 1); 7we='L&R
if ((r - mid) > THRESHOLD) / 8dRql-Ne
mergeSort(data, temp, mid + 1, r); M>BVnB_,-
else ms&5Bq+9
insertSort(data, mid + 1, r - mid); KxJDAP
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:
for (i = l; i <= mid; i++) { p4uObK,
temp = data; iy8Ln,4z(
} %&'[? LXD
for (j = 1; j <= r - mid; j++) { aJs! bx>K
temp[r - j + 1] = data[j + mid]; A i#~Eu*
} FhEfW7]0,
int a = temp[l]; [W'2z,S`WD
int b = temp[r]; 'OhGSs|
for (i = l, j = r, k = l; k <= r; k++) { b9Eb"
if (a < b) { =.`e4}u \X
data[k] = temp[i++]; W$D:mw7
a = temp; ZS&+<kGD
} else { bI;u};v
data[k] = temp[j--]; XaU^^K
b = temp[j]; o|s|Wmx>u
} 8RZqoQDH
} Q`=d5Uvw
} ?|hYtV
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/** RbA.&=3
* @param data )DQcf]I
* @param l (f"LD8MJ/
* @param i L1SZutWD?
*/ );p:[=$71
private void insertSort(int[] data, int start, int len) { u3 4.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K[-G2
} 5cr\ JR
} )\izL]=!t
} %x^ U3"7
} g`=Z%{z%
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堆排序: %wq;<'W
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package org.rut.util.algorithm.support; ^
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import org.rut.util.algorithm.SortUtil; S]c&