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。 i' |S
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插入排序: .6OE8w
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package org.rut.util.algorithm.support; S`X;2\:
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import org.rut.util.algorithm.SortUtil; fX} dh9
/** XX}RbE#4
* @author treeroot }
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* @since 2006-2-2 94|BSxc
* @version 1.0 n&[U/`o
*/ -_pI:K[
public class InsertSort implements SortUtil.Sort{ +5);"71
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/* (non-Javadoc) w>VM--
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -oe&1RrdVg
*/ }N4=~'R
public void sort(int[] data) { eB!0:nHN
int temp; WZ~rsSZSV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z^`>;n2
} R4QXX7h!
} }[l`R{d5q>
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冒泡排序: tq>QZEg
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package org.rut.util.algorithm.support; ga~rllm;i
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import org.rut.util.algorithm.SortUtil; 't^OIil
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/** 3Xf}vdgdM$
* @author treeroot q^goi1
* @since 2006-2-2
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* @version 1.0 P",~8Aci(
*/ pt|u?T_+
public class BubbleSort implements SortUtil.Sort{ ,uEWnZ"4
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/* (non-Javadoc) oe4Fy}Y_;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UG48g}
*/ L&'2
public void sort(int[] data) { CQzJ_aSJ(
int temp; sRb)*p'
for(int i=0;i for(int j=data.length-1;j>i;j--){ (K>5DU
if(data[j] SortUtil.swap(data,j,j-1); G4MNcy
} PS!f&IY}[.
} ShHm7+fV
} cq
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} -~v;'zOO
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} EQz`o+
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选择排序: +`_%U7p(
O^4:4tRpt
package org.rut.util.algorithm.support; Z]":xl\7
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import org.rut.util.algorithm.SortUtil; HDA!;&NRS
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/** &FIPEe#n
* @author treeroot ^0A'XCULG
* @since 2006-2-2 mTYEK4}
* @version 1.0 r/+<_3
*/ (?I8/KYR
public class SelectionSort implements SortUtil.Sort { #U(dleT8
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/* [L]
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* (non-Javadoc) qnv9?Xh
* C-m
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O,]t. 1V
*/ l)HF4#Bs
public void sort(int[] data) { .P9ALJP(b
int temp; y7ijT='8
for (int i = 0; i < data.length; i++) { k P>G4$e_v
int lowIndex = i; C B=H1+
for (int j = data.length - 1; j > i; j--) { r2qxi'
if (data[j] < data[lowIndex]) { oAA%pZ@
lowIndex = j; dBX%/
} I(bH.{1n7
} I/_`/mQ
SortUtil.swap(data,i,lowIndex); -?&wD["y
} e
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} ZVR0Kzu?Ra
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} uRh`qnL
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Shell排序: `\(Fax
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package org.rut.util.algorithm.support; uf^"Y3
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import org.rut.util.algorithm.SortUtil; ;Q:^|Fw!F
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/** aYkm]w;C
* @author treeroot '|G_C%,B
* @since 2006-2-2 aRC>pK.
* @version 1.0 Q: [d
*/ mH}/QfUlq
public class ShellSort implements SortUtil.Sort{ mfIY7DP
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/* (non-Javadoc) $A9!} `V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q!$?G]-%
*/ lnEc5J@c>i
public void sort(int[] data) { c&e?_@}|
for(int i=data.length/2;i>2;i/=2){ M4XnuFGB[w
for(int j=0;j insertSort(data,j,i); ,Si\ky7L
} N9r02c
} kZBIXW,G
insertSort(data,0,1); =oV8!d%]
} iL)q':xz
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/** nG1mx/w
* @param data UsNr$MO
{
* @param j d>M&jSCL
* @param i Xl.h&x0?
8
*/ @c,}\"(
private void insertSort(int[] data, int start, int inc) { J@=1zL
int temp; KCGs*kp>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /iQ}DbtRb
} & G@(f=
} Y
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} BBm.;=8@ ^
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} t7H2z}06=h
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快速排序: @f{yx\u/
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package org.rut.util.algorithm.support; ja$ e)
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import org.rut.util.algorithm.SortUtil; #?k$0|60
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/** +M/04
* @author treeroot A=o
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* @since 2006-2-2 &kB[jz_[A
* @version 1.0 >r2m1}6g"
*/ L~cswG'K
public class QuickSort implements SortUtil.Sort{ 2fT't"gw
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/* (non-Javadoc) :W_S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z1aApS
*/ ?C(Z\"IX
public void sort(int[] data) { Ro*$7j0!Hf
quickSort(data,0,data.length-1); 4tz8^z[Kw
} Uq 2Uv
private void quickSort(int[] data,int i,int j){ Is` S
int pivotIndex=(i+j)/2; s<cg&`u,<M
file://swap su<_?'uH
SortUtil.swap(data,pivotIndex,j); i DO`N!
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int k=partition(data,i-1,j,data[j]);
&THM]3:
SortUtil.swap(data,k,j); 0|nvi=4~e|
if((k-i)>1) quickSort(data,i,k-1); J6;^:()
if((j-k)>1) quickSort(data,k+1,j); ;'{:}K=h
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} <T[%03
/** 6A7UW7/
* @param data %f\ M61Z
* @param i E1_FK1*V;
* @param j !T@>Ld:
* @return b#FN3AsR
*/ v1?P$f*g
private int partition(int[] data, int l, int r,int pivot) { >|KfO>
do{ Unc;@=c
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6*Qn9Q%p-
SortUtil.swap(data,l,r); sTU]ntoQqR
} CsS0(n(x
while(l SortUtil.swap(data,l,r); l"p%]\tZ
return l; eC%.xu^
} 0PE $n
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} oJVpNE[3]
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改进后的快速排序: I&3L1rl3{*
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package org.rut.util.algorithm.support; l]Jk
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import org.rut.util.algorithm.SortUtil; >Y?B(I2e
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/** aD8cqVhM3&
* @author treeroot 3M8P%
* @since 2006-2-2 8K*X]Z h
* @version 1.0 BoG/Hd.S
*/ .!RBhLH_g
public class ImprovedQuickSort implements SortUtil.Sort { L.$9ernVY
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private static int MAX_STACK_SIZE=4096; ;'!U/N;-
private static int THRESHOLD=10; 2x{@19w)C
/* (non-Javadoc) 17tph;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .qi$X!0
*/ aCcBmc
public void sort(int[] data) { S&}7jRH1
int[] stack=new int[MAX_STACK_SIZE]; EShc1KPqc
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int top=-1; }OJ*o
int pivot; `sQ\j Nu
int pivotIndex,l,r; @4^5C-
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stack[++top]=0; E D*=8s2
stack[++top]=data.length-1; Ij(S"P@
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while(top>0){ 4,tMaQ
int j=stack[top--]; d%Jl9!u
int i=stack[top--]; \O/" F;
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pivotIndex=(i+j)/2; 7)O?jc
pivot=data[pivotIndex]; vnMt>]w-}
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SortUtil.swap(data,pivotIndex,j); k:4 Zc3
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file://partition ~`
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l=i-1; B~^MhX
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r=j; *#;8mM
do{ )|@b
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z2)f$ c
SortUtil.swap(data,l,r); Q2cF++Q1
} B)O=wx
while(l SortUtil.swap(data,l,r); NoO>CjeFb
SortUtil.swap(data,l,j); I.r&;
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if((l-i)>THRESHOLD){ P0~3<h?U8
stack[++top]=i; <Q/^[
stack[++top]=l-1; yA?>v'K
} xr&wV0O'
if((j-l)>THRESHOLD){ H/Cv ?GJF
stack[++top]=l+1; JaKR#Y$+~
stack[++top]=j; bYQ h{q
} 0bQaXxt|p
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} !CtY.Lp
file://new InsertSort().sort(data); 0 lXV+lj
insertSort(data); %eT4Q~}5"
} F')T:;,s
/** [q cT?h
* @param data `IOp*8
*/ MVg`6&oH
private void insertSort(int[] data) { >hoIJZP,
int temp; X_C9Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;_amgRP7$
} N#@xo)-H
} 8A"[n>931
} DBAJkBs
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} %}%D8-d}G
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归并排序: )b
m|],'
3:<+9X
package org.rut.util.algorithm.support; $5GvF1
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import org.rut.util.algorithm.SortUtil; a({qc0+UK
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/** c=I!?a"
* @author treeroot cBmo#:>'
* @since 2006-2-2 0! 9vGs
* @version 1.0 twz
*/ 9<kKno
public class MergeSort implements SortUtil.Sort{ )PL'^gRr
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/* (non-Javadoc) pWSYbN+d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8H./@~_ =
*/ %=/Y~ml?
public void sort(int[] data) { vNLf)B
int[] temp=new int[data.length]; ZB:Fjq
mergeSort(data,temp,0,data.length-1); DX}EOxO,.
} w4'(Y,(`
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private void mergeSort(int[] data,int[] temp,int l,int r){ Yk(OVl T
int mid=(l+r)/2; Z%Y=Lx
if(l==r) return ; L'6_~I
mergeSort(data,temp,l,mid); TUJ]u2J8?
mergeSort(data,temp,mid+1,r); W2|*:<Jt
for(int i=l;i<=r;i++){ .!KlN% As
temp=data; [4
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} .2Q`. o)
int i1=l; `PSr64h:D
int i2=mid+1; Y((z9-`
for(int cur=l;cur<=r;cur++){ *u>2" !+Ob
if(i1==mid+1) f<xF+wE
data[cur]=temp[i2++]; $%;NX[>j
else if(i2>r) <3P?rcd,5K
data[cur]=temp[i1++]; n]ar\f
else if(temp[i1] data[cur]=temp[i1++]; d`StBXG!
else R"5/
data[cur]=temp[i2++]; P0RMdf
} / Zz2=gDY
} qzE/n
Qo DWR5*^D
} ^*A/92!yF
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改进后的归并排序: fB1JU1
s.1(- "DU
package org.rut.util.algorithm.support; q]<Xx{_
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import org.rut.util.algorithm.SortUtil; j!mI9*hP
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/** `C=!8q
* @author treeroot s[nOB0
* @since 2006-2-2 =)Ew6}
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* @version 1.0 Y4@~NCU/
*/ q*DR~Ov
public class ImprovedMergeSort implements SortUtil.Sort { i= ~HXr}
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private static final int THRESHOLD = 10; <2A4}+p:
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/* 1uB}Oe2~
* (non-Javadoc) *X %`MN
* K_]LK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Ufcy{x#
*/ v&H&+:<
public void sort(int[] data) { {zbH.V[
int[] temp=new int[data.length]; l3-KswU
mergeSort(data,temp,0,data.length-1); d#ld*\|
} "^_p>C)T
KT?vs5jg$&
private void mergeSort(int[] data, int[] temp, int l, int r) { 4$IPz7
int i, j, k; `~@BU
int mid = (l + r) / 2; ywq{9)vq
if (l == r) 8"oS1W
return; px4Z
if ((mid - l) >= THRESHOLD) gjo\gP@
mergeSort(data, temp, l, mid); He#+zE;
else JFYeOmR+l
insertSort(data, l, mid - l + 1); \hi{r@k>}
if ((r - mid) > THRESHOLD) yc%AkhX*
mergeSort(data, temp, mid + 1, r); ^o,@9GTs
else 'd(}bYr)
insertSort(data, mid + 1, r - mid); eWwSD#N#
pNQd\nY|0
for (i = l; i <= mid; i++) { OE4 2{?)
temp = data; K\?vTgc(
} Ij=hmTl{P
for (j = 1; j <= r - mid; j++) { }E?s*iP
temp[r - j + 1] = data[j + mid]; ).v;~yE
} &]#D`u
int a = temp[l]; 'J!P:.=a>
int b = temp[r]; .YS[Md{
for (i = l, j = r, k = l; k <= r; k++) { _9L2JN$R6
if (a < b) { HO' ELiZ_q
data[k] = temp[i++]; 7F+f6(hB
a = temp; .Z/"L@
} else { w'L;`k;Q
data[k] = temp[j--];
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b = temp[j]; !*CL>}-,
} uidE/7
} Q8\Ks|u]
} o
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bZ3CJ f&mE
/** &=02.E@
* @param data s[xdID^3.
* @param l J3q}DDnEo
* @param i Qz<v. _
*/ +d#ZSNu/
private void insertSort(int[] data, int start, int len) { Zqx5I~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >TL0hBaaR
} >aa-ix
&
} [k1N `K(M
} Cs*u{O
} F~*
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堆排序: rRsLl/d
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package org.rut.util.algorithm.support; DM>j@(uWF
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import org.rut.util.algorithm.SortUtil; C/]0jAAE7
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/** 8.9S91]=
* @author treeroot T}4RlIZF
* @since 2006-2-2 oq0G@
* @version 1.0 ,&l>^w/
*/ 1lMU('r%
public class HeapSort implements SortUtil.Sort{ '9^x"U9c
/B1NcRS
/* (non-Javadoc) *,Y+3yM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jfgAI7;b
*/ ?[VS0IBS
public void sort(int[] data) { \idg[&}l}
MaxHeap h=new MaxHeap(); m\jp$
h.init(data); B-eYWt8s
for(int i=0;i h.remove(); uFECfh
System.arraycopy(h.queue,1,data,0,data.length); d3Y#_!)
} *K0CUir|
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private static class MaxHeap{ QF\NHV
se(_`a/4Q
void init(int[] data){ hEEbH@b
this.queue=new int[data.length+1]; v?Y9z!M
for(int i=0;i queue[++size]=data; r%TgZ5~u
fixUp(size); \Dr@n^hk@[
} w"A'uFXLc
} T_I"Tsv
4Jo:^JV
private int size=0; "-^TA_XfI
8tPq5i
private int[] queue; )e{~x
u
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public int get() { L6U[H#3(
return queue[1]; 9Y*6AaKE6
} RQ|!?\a=
i' N
public void remove() { \!s0VEE
SortUtil.swap(queue,1,size--); 7eh}Je8
fixDown(1); +h[$\_y
} Xt9?7J#\T
file://fixdown &.Yh_
private void fixDown(int k) { 9I9J}&4
int j; A^o
while ((j = k << 1) <= size) { l<^#@S H
if (j < size %26amp;%26amp; queue[j] j++; c+-L>dsss
if (queue[k]>queue[j]) file://不用交换 H
VG'v>s@
break; nvpdu)q<