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。 LP)mp cQ
插入排序: {}^ELw
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package org.rut.util.algorithm.support; <,hBoHZSL
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import org.rut.util.algorithm.SortUtil; IKr7"`
/** gS|xicq!
* @author treeroot }EIwkz8
* @since 2006-2-2 )LhO}zQ
* @version 1.0 =<_5gR
*/ Y@\5gZ&T
public class InsertSort implements SortUtil.Sort{ =,]J"n8|v
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/* (non-Javadoc) Gf]s?J^a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pd;ClMa%
*/ |f}NO~CA
public void sort(int[] data) { &lS0"`J=
int temp; RK3/!C`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X5/{Mx`8Oz
} coFg69\^
} S&uL9)Glb
} I~qiF%?d
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} n)7icSc
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冒泡排序: 6uXYZ.A
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package org.rut.util.algorithm.support; KE&}*Nf[
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import org.rut.util.algorithm.SortUtil; HgBg,1
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/** *(MvNN*
* @author treeroot *_wef/==
* @since 2006-2-2 dGteYt_F
* @version 1.0 )|a9Z~#x
*/ l=]vC +mU
public class BubbleSort implements SortUtil.Sort{ XZ&v3ul
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/* (non-Javadoc) 1;gSf.naG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &"h!SkX/
*/ ,<
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public void sort(int[] data) { 7Mv$.Z(
int temp; .nH
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for(int i=0;i for(int j=data.length-1;j>i;j--){ 6qJB"_.
if(data[j] SortUtil.swap(data,j,j-1); 66 Xt=US
} |\(/dXXP
} 9|WWA%p
} ` ;=Se_
} f,a %@WT
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} U[D<%7f
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选择排序: ggTjd"|)
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package org.rut.util.algorithm.support; WO9/rF_
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import org.rut.util.algorithm.SortUtil; /nP=E
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/** v+sbRuo8
* @author treeroot T!a[@,)_
* @since 2006-2-2 RGLA}|
* @version 1.0 RHbp:Mlk
*/ R*0F)M
public class SelectionSort implements SortUtil.Sort { 6v#G'M#r
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/* `@D4?8_
* (non-Javadoc) !gf3%!%
* UVJ(iNK"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) urB3
*/ [alXD_
public void sort(int[] data) { 0cUt"(]
int temp; ~m?~eJK#a
for (int i = 0; i < data.length; i++) { K-u/q6ufK
int lowIndex = i; B,Brmn
for (int j = data.length - 1; j > i; j--) { ?$c
if (data[j] < data[lowIndex]) { 5UjQLB
lowIndex = j; kwR@oVR^
} vNSf:5H$
} z0[ZO1Fo(
SortUtil.swap(data,i,lowIndex); >2
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} RWo B7{G
} B-|Zo_7
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} <pUou
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Shell排序: XE*bRTEw
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package org.rut.util.algorithm.support; 3raA^d3!?
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import org.rut.util.algorithm.SortUtil; J"%}t\Q
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/** odf^W
* @author treeroot ,P@-DDJ
* @since 2006-2-2 *$C[![
* @version 1.0 Sg>0P*K@
*/ !y~b;>887
public class ShellSort implements SortUtil.Sort{ j]"xck
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/* (non-Javadoc) 9nS!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %:?QE
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*/ #aX@mPm
public void sort(int[] data) { SqF.DB~
for(int i=data.length/2;i>2;i/=2){ 4"x;XVNM[
for(int j=0;j insertSort(data,j,i); iBC>w+t14
} QS*cd|7J;
} !F#aodM1N
insertSort(data,0,1); qjzW9yV+
} +|YZEC
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/** a
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* @param data S{T d/1}
* @param j jY+S,lD
* @param i yKEFne8^
*/ ,D2_Z]
private void insertSort(int[] data, int start, int inc) { gCr|e}w-
int temp; PZRn6Tc
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .{a2z*o
} *;E+9^:V
} {b0&qV
} 8Vhck-wF
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} +JS/Z5dl+}
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快速排序: A'QGTT
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package org.rut.util.algorithm.support; \nAHpF
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import org.rut.util.algorithm.SortUtil; Y*cJ4hQ
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/** 65#:2,s
* @author treeroot D8AIVK]
* @since 2006-2-2 !LOors za
* @version 1.0 )z235}P
*/ {a8^6dm*E
public class QuickSort implements SortUtil.Sort{ ]j2v"n
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/* (non-Javadoc) g)?g7{&?>?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /:{_| P\
*/ ~uR6z//%
public void sort(int[] data) { n,a5LR
quickSort(data,0,data.length-1); ]Bd3d%
} |EV\a[
private void quickSort(int[] data,int i,int j){ w1@b5-
int pivotIndex=(i+j)/2; s~X*U&}5
file://swap FEZ"\|I|
SortUtil.swap(data,pivotIndex,j); +VLe'|
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int k=partition(data,i-1,j,data[j]); 9Jy2T/l
SortUtil.swap(data,k,j); ViwpyC'v
if((k-i)>1) quickSort(data,i,k-1); (S)E|;f%C
if((j-k)>1) quickSort(data,k+1,j); k;_KKvQ
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} 27E9NO=
/** ,' rL'Ys
* @param data ?t0zsq
* @param i ;s\;78`0
* @param j ' q<EZ{
* @return \btR^;_\A
*/ H]$=*(aje
private int partition(int[] data, int l, int r,int pivot) { +iH30v
do{ _p J_V>l
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ca/o#9:N`:
SortUtil.swap(data,l,r); =PFR{=F
} C7 ]DJn
while(l SortUtil.swap(data,l,r); d9-mWz(V+
return l; '*N9"C
} l P$r
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} iQ|,&K0d]
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改进后的快速排序: yI.}3y{^5
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package org.rut.util.algorithm.support; '`]n_$f'
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import org.rut.util.algorithm.SortUtil; Bq~hV;9nf
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/** ?l,
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* @author treeroot -M:hlwha
* @since 2006-2-2 q]N?@l]
* @version 1.0 }>;ht5/i/
*/ ewAH'H]o
public class ImprovedQuickSort implements SortUtil.Sort { ~S^X"8(U
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private static int MAX_STACK_SIZE=4096; _D>as\dP
private static int THRESHOLD=10; 88#qu.
/* (non-Javadoc) hk@`N;dn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B]|6`UfB
*/ vNz;#Je
public void sort(int[] data) { ,zN3? /7
int[] stack=new int[MAX_STACK_SIZE]; O J35En
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int top=-1; m+Q5vkW
int pivot; &8]#RQy{f
int pivotIndex,l,r; UEEBWz H
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stack[++top]=0; ke}Y2sB
stack[++top]=data.length-1; ,ykPQzO
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while(top>0){ 3"'# |6O9
int j=stack[top--]; MjQ[^%lfL
int i=stack[top--]; QOT)x4!)
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pivotIndex=(i+j)/2; r*6"'W>c6
pivot=data[pivotIndex]; % QPWw~}:
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SortUtil.swap(data,pivotIndex,j); , G[r+4|h
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file://partition Bn~\HW\Lh
l=i-1;
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r=j; ,C{^`Bk-W
do{ 6wb^*dD92
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b8N[."~:
SortUtil.swap(data,l,r); ).NcLJw_
} CJ9cCtA
while(l SortUtil.swap(data,l,r); %XJQ0CE<(
SortUtil.swap(data,l,j);
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if((l-i)>THRESHOLD){ k-WHHoU>o
stack[++top]=i; Qj
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stack[++top]=l-1; HQ^9[HN.
} a[1sA12
if((j-l)>THRESHOLD){ Pqy-gWOv
stack[++top]=l+1; N>d|A]zH
stack[++top]=j; ,4H;P/xsb
} i1qS ns
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} mb0n}I_AC
file://new InsertSort().sort(data); Ky[bX
insertSort(data); kqVg2#<@M
} 8^/+wa+G
/** [8F
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* @param data LkJ$aW/
*/ T&1-eq>l
private void insertSort(int[] data) { {q&@nm40
int temp; @J-plJ4e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ug^om{e-
} ;W7 hc!
} mi7sBA9L8
} l^k+E-w\
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} p`>AnfG
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归并排序: [AXsnpa/C
|EF>Y9
package org.rut.util.algorithm.support; sA/,+aM
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import org.rut.util.algorithm.SortUtil; $brKl8P
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/** \s=QiPK
* @author treeroot Bu7A{DRf
* @since 2006-2-2 %6AYCN?Ih
* @version 1.0 UhsO\ 9}qH
*/ 7dSh3f!
public class MergeSort implements SortUtil.Sort{ (E!%v`_0
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/* (non-Javadoc) A)8rk_92Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qE>i,|rP`
*/ |vv]Z(_
public void sort(int[] data) { -NAmu97V}
int[] temp=new int[data.length]; "
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mergeSort(data,temp,0,data.length-1); <O ;&qT*b
} qh%i5Mu
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private void mergeSort(int[] data,int[] temp,int l,int r){ "?$L'!bM@
int mid=(l+r)/2; 6|QTS|!
if(l==r) return ; P,(9cyS{
mergeSort(data,temp,l,mid); ~\2;i]|
mergeSort(data,temp,mid+1,r); ucw`;<d8
for(int i=l;i<=r;i++){ mHKJ
temp=data; t-_#Q bzE{
} f,|QAj=a
int i1=l; MzcB3pi
int i2=mid+1; &a.']!$^"
for(int cur=l;cur<=r;cur++){ M9gOoYf,~
if(i1==mid+1) y)P&]&"?
data[cur]=temp[i2++]; nt7|f,_J
else if(i2>r) ;:P7}v fz!
data[cur]=temp[i1++]; d>UnJ)V}
else if(temp[i1] data[cur]=temp[i1++]; R0{Qy*YQ`
else !6lOIgn
data[cur]=temp[i2++]; ^D>fis
} pg+b[7
} '?5S"??
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} 2zhn`m
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改进后的归并排序: fTBVvY4(
k!&:(]
package org.rut.util.algorithm.support; i&JpM]N
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import org.rut.util.algorithm.SortUtil; YUCC*t
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/** Q |%-9^
* @author treeroot C ck#Y
* @since 2006-2-2 yX`#s]M
* @version 1.0 n[|6khOL-
*/ q]K'p,'
public class ImprovedMergeSort implements SortUtil.Sort { " rsSW3_
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private static final int THRESHOLD = 10; #00D?nC
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/* K!p,x;YX
* (non-Javadoc) R }1W
* 0*/kGvw`i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +,z)#
*/ Y17hOKc`
public void sort(int[] data) { 8&%Cy'TIz4
int[] temp=new int[data.length]; 7#ofNH J
mergeSort(data,temp,0,data.length-1); ZNi
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} +>!V]S
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private void mergeSort(int[] data, int[] temp, int l, int r) { LX\)8~dp
int i, j, k; TKo<~?
int mid = (l + r) / 2; !.*iw
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if (l == r) L!,d"wuD
return; 2L:$aZ
if ((mid - l) >= THRESHOLD) NEw$q4
mergeSort(data, temp, l, mid); ~cIl$b
else "kU]
insertSort(data, l, mid - l + 1); 1DqX:WM6
if ((r - mid) > THRESHOLD) h/HHKn
mergeSort(data, temp, mid + 1, r); >k;p.Pay%
else \%TyrY+`K
insertSort(data, mid + 1, r - mid); \^0 !|
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for (i = l; i <= mid; i++) { *1$
temp = data; P_&p=${
} nM8[
for (j = 1; j <= r - mid; j++) { *GJ:+U&m[
temp[r - j + 1] = data[j + mid]; e\D|
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} U7h(-dV
int a = temp[l]; a ~opE!|m
int b = temp[r]; P#MK
for (i = l, j = r, k = l; k <= r; k++) { &<Zdyf?[Ou
if (a < b) { aBxiK[[`
data[k] = temp[i++];
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a = temp; s7l23*Czl
} else { +Ofa#^5);K
data[k] = temp[j--]; <bP#H
b = temp[j]; FqZgdmwR
} M?$ZJ-
} oxzq!U
} /P:EWUf'
2)9r'ai?a
/** o/^1Wm=
* @param data :^#vxdIC?
* @param l )c+k_;t'+
* @param i ;|HL+je;Z
*/ Z7z]2v3}c
private void insertSort(int[] data, int start, int len) { 8I.VJ3Q
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,F9nDF@)
} wXbsS)#/
} ugLlI2 nJ
} Gq1)1
} r[pF^y0
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堆排序: 9->q| E4
y`So&:1
package org.rut.util.algorithm.support; mp1ttGUtM
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import org.rut.util.algorithm.SortUtil; Qnt5HSSt
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/** uR:rO^
* @author treeroot ]C!?HQ{bsf
* @since 2006-2-2 z:}nBCmLV
* @version 1.0 z_&P?+"Df
*/ S-c ^eLzQ
public class HeapSort implements SortUtil.Sort{ }`_(<H
2 hq\n<
/* (non-Javadoc) cP rwW6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vFhz!P~
*/ t,<UohL|z
public void sort(int[] data) { (>7>3
MaxHeap h=new MaxHeap(); >bIF>9T
h.init(data); Y3rt5\!
for(int i=0;i h.remove(); 9 <\`nm
System.arraycopy(h.queue,1,data,0,data.length); !YE zFU`L
} #
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private static class MaxHeap{ ].m qxf
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void init(int[] data){ =J/ FJb
this.queue=new int[data.length+1]; [Y/:@t"2y
for(int i=0;i queue[++size]=data; zk}{ dG^M:
fixUp(size); L;/n!k.A
} K0Tg|9
} &