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。 = /Wu'gG)
插入排序: {2:d`fqD
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package org.rut.util.algorithm.support; C_G1P)k
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import org.rut.util.algorithm.SortUtil; nLJBq)i
/** bnr|Y!T}Bi
* @author treeroot BFh$.+D
* @since 2006-2-2 U
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* @version 1.0 $)*xC!@6X
*/ Lm|al.Z
public class InsertSort implements SortUtil.Sort{ SA+d&H}Fc
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/* (non-Javadoc) D0 ruTS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zQc"bcif5(
*/ ]fE3s{y
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public void sort(int[] data) { X$V|+lTk
int temp; KjOi(YUnq7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6m[9b*s7
} X+iK<F$
} iyj3QLqE
} s}(X]Gx1
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} Z`s!dV]e9
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冒泡排序: JIxiklk
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package org.rut.util.algorithm.support; .C= I^
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import org.rut.util.algorithm.SortUtil; i&&qbZt
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/** )gXTRkmw
* @author treeroot a$m_D!b~_
* @since 2006-2-2 _-%d9@x
* @version 1.0 %F J#uQXZ
*/ /{X_
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public class BubbleSort implements SortUtil.Sort{ Ae49n4J
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/* (non-Javadoc) Rla4L`X;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O]qPmEj
*/ bulboyA
public void sort(int[] data) {
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int temp; uD(t`W"
for(int i=0;i for(int j=data.length-1;j>i;j--){ L~eAQR
if(data[j] SortUtil.swap(data,j,j-1); |zpx)8Q
} S$O,] @)
} <xlm
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} :woa&(wN;1
} @~o`#$*|
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}
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选择排序: cNj*E
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package org.rut.util.algorithm.support; N E=
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import org.rut.util.algorithm.SortUtil; Y=Hz;Ni
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/** \ e,?rH
* @author treeroot `^##b6jH
* @since 2006-2-2 3hS6jS
* @version 1.0 <zfKC
*/ wPnybb{
public class SelectionSort implements SortUtil.Sort { {oWsh)[x2
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/* ]US[5)EL-
* (non-Javadoc) 1V%'.l9
* A1A3~9HuK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o~C('1Fdb
*/ zj%cQkZ
public void sort(int[] data) { -3hCiKq
int temp; >5Lexj
for (int i = 0; i < data.length; i++) { FFe)e>bH
int lowIndex = i; <4mQ*6
for (int j = data.length - 1; j > i; j--) { qI2'u %
if (data[j] < data[lowIndex]) { 0YS?=oi
lowIndex = j; Np)aS[9W
} cwynd=^nC
} R]QpMj%o
SortUtil.swap(data,i,lowIndex); nY^Nbh0
} ZnXejpj)D
} )|]Z>>%t
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} ,
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Shell排序: AS;.sjgk
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package org.rut.util.algorithm.support; /#t&~E_|
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import org.rut.util.algorithm.SortUtil; @Fx@5e
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/** nyhMnp#<
* @author treeroot @]'SeiNp
* @since 2006-2-2 m0( E kK
* @version 1.0 `6Hf&u<
*/ $']VQ4tZ
public class ShellSort implements SortUtil.Sort{ \6sQJq
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/* (non-Javadoc) 8/Rm!.8+~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJf<*j^G
*/ Lko`F$5X
public void sort(int[] data) { 8tQ|-l*
for(int i=data.length/2;i>2;i/=2){ "mZ.V
for(int j=0;j insertSort(data,j,i); @ajM^L!O
} :vQM>9l7
} DQgH_!
insertSort(data,0,1); cZ<
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} T*P+Fh"
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/** aWaw&u
* @param data lrys3
* @param j U e*$&VlT
* @param i D ,M@8h,
*/ '_o@VO
private void insertSort(int[] data, int start, int inc) { ^:DyT@hQB5
int temp; #T%zfcUj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0.DQO;
} "ahvNx;x
} _D-Riu>#J
} JR1*|u
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} frH)_ YJ%
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快速排序: dDlG!F_=
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package org.rut.util.algorithm.support; >saI+u'o
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import org.rut.util.algorithm.SortUtil; u~'OcO
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/** zM59UQU;
* @author treeroot )N)ljA3]
* @since 2006-2-2 GZ3/S|SMP
* @version 1.0 D/s?i[lb
*/ ~`Sle
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public class QuickSort implements SortUtil.Sort{ _A-V@%3
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/* (non-Javadoc) ( u f5\}x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kxo.v |)8
*/ n\ Uh
public void sort(int[] data) { oVkr3KZ
quickSort(data,0,data.length-1); ;BI)n]L
} n`<U"$*
private void quickSort(int[] data,int i,int j){ I,j3bC
int pivotIndex=(i+j)/2; 3w'W~
file://swap ~zyQ('
SortUtil.swap(data,pivotIndex,j); pUL sGb
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int k=partition(data,i-1,j,data[j]); [g|Hj)(
SortUtil.swap(data,k,j); Taasi`
k
if((k-i)>1) quickSort(data,i,k-1); Y/P]5: =h
if((j-k)>1) quickSort(data,k+1,j); r}EM4\r
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} p
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/** Z#7U
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* @param data h{/ve`F>@
* @param i }n95< {
* @param j EUZq$@uWL
* @return AbZ:(+@cP
*/ 0N VI+Z$
private int partition(int[] data, int l, int r,int pivot) { U**)H_S/~
do{ Z| L2oce
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e\.HWV ]I
SortUtil.swap(data,l,r); F< |c4
} DV,DB\P$
while(l SortUtil.swap(data,l,r); a: IwA9!L
return l; b42QBTeg
} RbAt3k;y
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} P)IjL&[
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改进后的快速排序: !KDr`CV&
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package org.rut.util.algorithm.support; pqq?*\W&[v
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import org.rut.util.algorithm.SortUtil; f0FP9t3k
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/** )*
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* @author treeroot yFO)<GLk
* @since 2006-2-2 4:3_ER ]J
* @version 1.0 8[HZ@@
*/ 9K$]h2
public class ImprovedQuickSort implements SortUtil.Sort { %~\
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private static int MAX_STACK_SIZE=4096; \n(ROf^'
private static int THRESHOLD=10; 6eo4#/+%
/* (non-Javadoc) Y^3)!>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4d-q!lR pa
*/ fz8h]PZ
public void sort(int[] data) { %^!aB
int[] stack=new int[MAX_STACK_SIZE]; ^S=cNSpC
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int top=-1; *;X-\6
int pivot; LYNZP4(R
int pivotIndex,l,r; s7M}NA 0
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stack[++top]=0; j%5a+(H,z;
stack[++top]=data.length-1; mQ=sNZ-d]
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while(top>0){
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int j=stack[top--]; ]|y}\7Aa
int i=stack[top--]; -%=RFgU4
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pivotIndex=(i+j)/2; E[*0Bo]
pivot=data[pivotIndex]; re q-Q |
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SortUtil.swap(data,pivotIndex,j); QE*%HR'
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file://partition \*J.\f
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do{ 8? F
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ETg{yBsp
SortUtil.swap(data,l,r); "?[7#d])
} S[sr'ZW
while(l SortUtil.swap(data,l,r); ]Y =S
SortUtil.swap(data,l,j); aPt{C3<
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if((l-i)>THRESHOLD){ ,@479ZvvR3
stack[++top]=i; u]SZ{[e
stack[++top]=l-1; n5\}KZh
} u`+'lBE,
if((j-l)>THRESHOLD){ d^y86pq.
stack[++top]=l+1; _1\poAy
stack[++top]=j; k|5k8CRX
} @Rf^P(
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} cPSti
file://new InsertSort().sort(data); P]-#wz=S
insertSort(data); :^5>wDu{
} G4O3h Y.`
/** g kn)V~ij
* @param data n@_)fFD%
*/ xlk5Gob*
private void insertSort(int[] data) { ]An_5J
int temp; }q]jjs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9LHa&""
} 5DUi4 Cbgy
} IBDVFA
} py=i!vb&Z%
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} ,,7.=#
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归并排序: ePi
Z
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package org.rut.util.algorithm.support; $8=(I2&TW
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import org.rut.util.algorithm.SortUtil; vyujC`61d
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/** 51z /
* @author treeroot !*9FKDB{
* @since 2006-2-2 X&/(x
* @version 1.0 g4i #1V=
*/ k,AM]H
public class MergeSort implements SortUtil.Sort{ w gmWo8
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/* (non-Javadoc) \6Xn]S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " xlJs93c
*/ ~6] )*y
public void sort(int[] data) { 'r6 cVBb}
int[] temp=new int[data.length]; R&gWqt/
mergeSort(data,temp,0,data.length-1); [@x
} 4_WH
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}!Xf&c{7{
private void mergeSort(int[] data,int[] temp,int l,int r){ Z`|> tbOfZ
int mid=(l+r)/2; 9OH.&g
if(l==r) return ; GsI[N%
mergeSort(data,temp,l,mid); wQ@Zwbx
mergeSort(data,temp,mid+1,r); [1e.i
for(int i=l;i<=r;i++){ =Z^un&'
temp=data; 9#ZzE/
} 9GtLMpy
int i1=l; ixg\[5.Q+
int i2=mid+1; F|9a}(-7
for(int cur=l;cur<=r;cur++){ dP?nP(l
if(i1==mid+1) L(W%~UGN
V
data[cur]=temp[i2++]; B$@1QG
else if(i2>r) \MF3CK@/
data[cur]=temp[i1++]; !'+\]eA
else if(temp[i1] data[cur]=temp[i1++]; 6Q?BwD+>
else 9fCiLlI
data[cur]=temp[i2++]; _xa}B,H
} | h
} |C^
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}
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改进后的归并排序: O 0Vn";Q 4
7ZL,p:f
package org.rut.util.algorithm.support; +Kxe ymwr2
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import org.rut.util.algorithm.SortUtil; y?[5jL|Ue
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/** u}Lc|_ea`
* @author treeroot b0!*mrF]6
* @since 2006-2-2 oXnC"y}0P
* @version 1.0 t`N
">c"
*/ (N)r#"FV
public class ImprovedMergeSort implements SortUtil.Sort { lp IteZw:
cdd P
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private static final int THRESHOLD = 10; ZD$-V3e`
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/* NEjPU#@c
* (non-Javadoc) MtMvpHk
* Z&AHM &,yj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45]Ym{]
*/ #|)JD@;Q
public void sort(int[] data) { LsuAOB 8
int[] temp=new int[data.length]; 9:bh3@r/
mergeSort(data,temp,0,data.length-1); 9O(i+fM
} eD>-`'7<
2U-#0,ll]
private void mergeSort(int[] data, int[] temp, int l, int r) { Zm"!E6`69
int i, j, k; ,-w-su=J_
int mid = (l + r) / 2; K,`).YK
if (l == r) R[mH35D/
return; 7j9D;_(.^$
if ((mid - l) >= THRESHOLD) =NVZ$K OZ
mergeSort(data, temp, l, mid); C:|q'"F
else WZ-4^WM=!
insertSort(data, l, mid - l + 1); L8,H9T#e
if ((r - mid) > THRESHOLD) B:R7[G;1
mergeSort(data, temp, mid + 1, r); @d8&3@{R^
else $Uv<LVd(
insertSort(data, mid + 1, r - mid); Pn'QOVy
u|_ITwk
for (i = l; i <= mid; i++) { $@+p~ )r(l
temp = data; M"$jpBN*
} 7Va#{Y;Zy
for (j = 1; j <= r - mid; j++) { N"q+UCRC
temp[r - j + 1] = data[j + mid]; J4Q)`Y\~
} ~:P8g<w
int a = temp[l]; 2n-Tpay0
int b = temp[r]; ')1}#V/I
for (i = l, j = r, k = l; k <= r; k++) { S0Rf>Eo4
if (a < b) { ihpz}g
data[k] = temp[i++]; .N-'; %8
a = temp; #cSw"A
} else { <3],C)Zwc
data[k] = temp[j--]; AAlmG9l&7
b = temp[j]; Ee$"O6*!
} fl5UY$a2-
} E :'
} d[P>jl%7
wB1-|=K1
/** !}Woo$#ND
* @param data (dO'_s&M]/
* @param l o3\SO
* @param i *_"c!eW
*/ 8JjU 9#
private void insertSort(int[] data, int start, int len) { M2zos(8g
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5CRc]Q#@
} web8QzLLB
} OI]K_ m3
} c4qp3B_w
} R&x7