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。 hBFP1u/E'
插入排序: "d$m@c
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package org.rut.util.algorithm.support; r} P<iX
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import org.rut.util.algorithm.SortUtil; !Mu|mz=
/** !
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* @author treeroot h[?O+Z^
* @since 2006-2-2 :T._ba3|
* @version 1.0 (lGaPMEU}
*/ P{5-Mx!{&
public class InsertSort implements SortUtil.Sort{ "F}'~HWZp
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/* (non-Javadoc) b.@P%`@a.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z OSs[[
*/ C-?%uF
public void sort(int[] data) { `D":Q=:
int temp; =1u@7Bh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `$~RxzZ g
} cPl`2&p
} je6CDF qw
} RC^9HuR&
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} ErT{(t7
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冒泡排序: -\y-qHgb/
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package org.rut.util.algorithm.support; S8l1"/?aHE
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import org.rut.util.algorithm.SortUtil; "iM~Hy
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/** Dgql?+2$
* @author treeroot rFZrYm
* @since 2006-2-2 =rd|0K"(r
* @version 1.0 k78Vh$AA6%
*/ Ln.ZVMZ;
public class BubbleSort implements SortUtil.Sort{ H3H_u4_?SE
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/* (non-Javadoc) X]y)ZF26
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y2R \]FrT
*/ !~ZP{IXyo
public void sort(int[] data) { TS"D]Txs
int temp; n q19Q)
for(int i=0;i for(int j=data.length-1;j>i;j--){ cM&2SRBZ
if(data[j] SortUtil.swap(data,j,j-1); &6j<c a
} ^#):c`
} >|o_wO
} T%F0B`
} 1mSaS4!"B
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}
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选择排序: m7%C#+67
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package org.rut.util.algorithm.support; )B!d,HKt;
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import org.rut.util.algorithm.SortUtil; %vO<9fE|1
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/** _}mK!_`
* @author treeroot 3"UsZyN:
* @since 2006-2-2 ^# A.@
* @version 1.0 'ZQWYr9R
*/ Q0{z).&\(e
public class SelectionSort implements SortUtil.Sort { x3e]d$
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/* @-#T5?
* (non-Javadoc) d'l$$%zJ
* 15zrrU~D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]$M<]w,IJ2
*/ *OdX u&5
public void sort(int[] data) { !]S=z^"<
int temp; 0ZC,BS`D^
for (int i = 0; i < data.length; i++) { 4S
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int lowIndex = i; 137Xl>nO
for (int j = data.length - 1; j > i; j--) { |*,jU;NI
if (data[j] < data[lowIndex]) { P` '$
lowIndex = j; 3]n0 &MZAR
} 6U,fz#<,}
} ~H[%vdR
SortUtil.swap(data,i,lowIndex); t#<KxwhcN
} d<@Mdo<;?g
} =V|Nn0E
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} 1.R
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Shell排序: w}M3x^9@
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package org.rut.util.algorithm.support; $`vkw(;t)1
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import org.rut.util.algorithm.SortUtil; =p&sl;PsLw
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/** wk02[
* @author treeroot Dw |3Z
* @since 2006-2-2 _2jw,WKr
* @version 1.0 Sue
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*/ v3JPE])/
public class ShellSort implements SortUtil.Sort{ (L|}`
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/* (non-Javadoc) p,n\__
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JCQ:+eqt
*/ ">6&+^BN'
public void sort(int[] data) { lEfBe)7+
for(int i=data.length/2;i>2;i/=2){ j
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for(int j=0;j insertSort(data,j,i); rR!U;
} <pOl[5v]
} X&\o{w9%
insertSort(data,0,1); cw+g
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} g 2'x#%ET
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/** Lp~^*j(
* @param data "2mFC!
* @param j \|Qb[{<:,
* @param i S+FQa7k
*/ 6wpU6NU
private void insertSort(int[] data, int start, int inc) { 2cjEex:&
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uMDtdC8
} &r:m&?!|VQ
} #` +]{4hR
} sA\L7`2H
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} nx;$dxx_Ws
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快速排序: WW3
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package org.rut.util.algorithm.support; n{{P3f
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import org.rut.util.algorithm.SortUtil; \[T{M!s
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/** %uEtQh[
* @author treeroot 9>{t}Id
* @since 2006-2-2 `r]TA]DR
* @version 1.0 A|C_np^z2
*/ &9@gm--b:
public class QuickSort implements SortUtil.Sort{ <N5rv3
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/* (non-Javadoc) 2C{/`N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8;8YA1@w
*/ F(E<,l2[
public void sort(int[] data) { `x4E;Wjv
quickSort(data,0,data.length-1); u0'i!@795
} #Jv43L H
private void quickSort(int[] data,int i,int j){ ,$BgR2^
int pivotIndex=(i+j)/2; IwM8#6;S~
file://swap CfY7<o1>
SortUtil.swap(data,pivotIndex,j); wlL8X7+:
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int k=partition(data,i-1,j,data[j]); !Z-9tYO
SortUtil.swap(data,k,j); r!~(R+,c
if((k-i)>1) quickSort(data,i,k-1);
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if((j-k)>1) quickSort(data,k+1,j); ,{pGP#
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} w`0)x5
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/** k}-]W@UCa?
* @param data 8Y xhd
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* @param i gjQ=8&i
* @param j .
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* @return Fj,(_^
*/ r/^tzH's
private int partition(int[] data, int l, int r,int pivot) { hMz&JJ&B
do{ ;fj9n-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -$OD }5ku#
SortUtil.swap(data,l,r); srsK:%`
} TMNfJz
while(l SortUtil.swap(data,l,r); R|$[U
return l; [qW<D/@
} 6{ C Fe|XN
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} m,=)qex
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改进后的快速排序: H/pcXj
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package org.rut.util.algorithm.support; YN4"O>
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import org.rut.util.algorithm.SortUtil; >/8ru*Oc
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/** L#`7 FaM?
* @author treeroot Is<x31R
* @since 2006-2-2
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* @version 1.0 "$]ls9-%n
*/ &3WkH W
public class ImprovedQuickSort implements SortUtil.Sort { 2ve
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private static int MAX_STACK_SIZE=4096; lfXH7jL2~
private static int THRESHOLD=10; n}=rj7
/* (non-Javadoc) :m]/u( /N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `i=JjgG@
*/ /tG 5!l
public void sort(int[] data) { T!Xm")d
int[] stack=new int[MAX_STACK_SIZE]; V+peO
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int top=-1; 3%_
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int pivot; Hde]DK,d
int pivotIndex,l,r; W+8BQ-2
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stack[++top]=0; S&5Q~}{,
stack[++top]=data.length-1; gTqeJWX9wP
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while(top>0){ DLNa6
int j=stack[top--]; @YEw^J~
int i=stack[top--]; os}b?I*K
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pivotIndex=(i+j)/2; UedvA9$&;
pivot=data[pivotIndex]; B jH ~Ml2
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SortUtil.swap(data,pivotIndex,j); yB0jL:|a
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file://partition #=`FM:WH
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r=j; n^* >a
do{ f@wsSm
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A)hq0FPp
SortUtil.swap(data,l,r); U(rr vNt:t
} IUluJ.sXIf
while(l SortUtil.swap(data,l,r); //#xK D
SortUtil.swap(data,l,j); 70'}f
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if((l-i)>THRESHOLD){ (iHf9*i CV
stack[++top]=i; ?l6>6a7
stack[++top]=l-1; -s9 Y(>
} i0,%}{`
if((j-l)>THRESHOLD){ g2+l@$W
stack[++top]=l+1; 2>!_B\%) H
stack[++top]=j; 0t5Q9#RY
} 9X
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} ?R|fS*e2EB
file://new InsertSort().sort(data); JK@izI
insertSort(data); /Oq1q._9F
} S% JNxT7'
/** ^/_\etV
* @param data GOv92$e
*/ 1Pud,!\%q
private void insertSort(int[] data) { YWt"|
int temp; - XE79 fQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n.2E8m/
} Ck ~V5
} Q3B'-BZe
} '#cT4_D^lI
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} B(4:_j\2
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归并排序:
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package org.rut.util.algorithm.support; WmT}t
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import org.rut.util.algorithm.SortUtil; XBfia j
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/** `-72>F ;T
* @author treeroot 4
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* @since 2006-2-2 9B!im\]O
* @version 1.0 p|bc=`TD
*/ W2r6jm!
public class MergeSort implements SortUtil.Sort{ !1a|5
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/* (non-Javadoc) H6%!v1 u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F:*[
*/ yNhscAMNn
public void sort(int[] data) { M`9orq<
int[] temp=new int[data.length]; / K_e;(Y_
mergeSort(data,temp,0,data.length-1); VgFF+Eg
} H y.3ccZ0
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private void mergeSort(int[] data,int[] temp,int l,int r){ I{?E /Sc
int mid=(l+r)/2; 4pfix1F g
if(l==r) return ; :|n>H+Y
mergeSort(data,temp,l,mid); <FcPxZ
mergeSort(data,temp,mid+1,r); .yK\&q[<
for(int i=l;i<=r;i++){ Ac5o K
temp=data; Y2=Brtc[@
} eB<V%,%N#
int i1=l; X YNUss
int i2=mid+1; xu%!
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for(int cur=l;cur<=r;cur++){ I9:G9
if(i1==mid+1) YmO"EWb
data[cur]=temp[i2++]; N#pl mPrZ
else if(i2>r) G!e}j
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data[cur]=temp[i1++]; /+<%,c$n
else if(temp[i1] data[cur]=temp[i1++]; A/$KA'jX
else FfD
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data[cur]=temp[i2++]; [/+dHW|
} 8aZey_Hw;+
} 8CnI%_Su
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} aCUV[CPw
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改进后的归并排序: l# !@{ <
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package org.rut.util.algorithm.support; /v
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import org.rut.util.algorithm.SortUtil; R@7GCj
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/** =|6^)lt$
* @author treeroot
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* @since 2006-2-2 t'=~"?T/o
* @version 1.0 ](9{}DHV
*/ -aH?7HV}
public class ImprovedMergeSort implements SortUtil.Sort { A=qW]Im
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private static final int THRESHOLD = 10; l9ifUhe
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/* LKqog%,c
* (non-Javadoc) cP#]n)<
* t5jhpPVf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #a'x)$2;R|
*/ 2ucF(^
public void sort(int[] data) { #hE3~+i
int[] temp=new int[data.length]; ,a]~hNR*X
mergeSort(data,temp,0,data.length-1); 5cNzG4z
} M;p q2$
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private void mergeSort(int[] data, int[] temp, int l, int r) { /qkIoF2
int i, j, k; Pu%>j'A
int mid = (l + r) / 2; Q5Ghki
if (l == r) 9Pob|UA
return; (y+5d00
if ((mid - l) >= THRESHOLD) R8r[;u\iV
mergeSort(data, temp, l, mid); <0Egkz3s
else VU+ s7L0
insertSort(data, l, mid - l + 1); Etr8lm E
if ((r - mid) > THRESHOLD) 6dS1\Y
mergeSort(data, temp, mid + 1, r); 4|Gs(^nU
else dW^_tzfF7
insertSort(data, mid + 1, r - mid); G|G?h
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for (i = l; i <= mid; i++) { ux79"5qb
temp = data; u.L8tR:(
} q/2K=BOh
for (j = 1; j <= r - mid; j++) { f/[?5M[
temp[r - j + 1] = data[j + mid]; 8apKp?~yW
} Tk#&Ux{ZJ
int a = temp[l]; ^a#&wW
int b = temp[r]; `1d`9AS2g
for (i = l, j = r, k = l; k <= r; k++) { QWW7I.9r
if (a < b) { zc,9Qfn
data[k] = temp[i++]; Z=t#*"J
a = temp; E=_B@VJknW
} else { ZLio8
data[k] = temp[j--]; >*i8RqU
b = temp[j]; <,cIc]eX
} @~U6=(+
} K"6+X|yxE
} v/00LR
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/** o`1V
* @param data [@)z $W
* @param l H"RF[bX(
* @param i 10I`AjF0
*/ ; 7v7V
private void insertSort(int[] data, int start, int len) { D%Jc?6/I#3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q.E^9giC
} 4k2c mM$
} FQ~ead36C
} :8|3V~%m
} RJsG]`
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