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。 =OKUSHu@V
插入排序: V_|HzYJJ5
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package org.rut.util.algorithm.support; Kf$6D 79#
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import org.rut.util.algorithm.SortUtil; >:J1Gc
/** EFu>
* @author treeroot tM;+U
* @since 2006-2-2 vJ&35nF&
* @version 1.0 hIa,PZ/Q
*/ H3Zt3l1u+
public class InsertSort implements SortUtil.Sort{ 1Eryw~,,9i
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/* (non-Javadoc) *;lb<uLv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xz7CnW1
*/ F^=y+}]=
public void sort(int[] data) { jo0XOs
int temp; i/C0
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ie8K[ >
} E!,jTaZz
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冒泡排序: :`4LV
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package org.rut.util.algorithm.support; Nvd(Tad
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import org.rut.util.algorithm.SortUtil; c-Qa0Q
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/** V9`jq$
* @author treeroot &Mz.i,Gh
* @since 2006-2-2 mxwG~a'_
* @version 1.0 sq8O+AWl
*/ h{?f
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public class BubbleSort implements SortUtil.Sort{ 4k6:
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/* (non-Javadoc) |CBJ8],mT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KF`mOSP
*/ hm1.UE
public void sort(int[] data) { ;*20b@
int temp; ~AF'
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for(int i=0;i for(int j=data.length-1;j>i;j--){ T7M];@q
if(data[j] SortUtil.swap(data,j,j-1); obgO-d9l
} Ti#x62X{
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} 7~H$p X
} ;$4:
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} AJP-7PPD
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选择排序: :1#$p
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package org.rut.util.algorithm.support; W9A F}
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import org.rut.util.algorithm.SortUtil; 1L3 $h0i
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/** #Jfmt~ks'
* @author treeroot A5G@u}YS5
* @since 2006-2-2 )/bv@Am
* @version 1.0 Ek '%%%
*/ )Qo^Mz
public class SelectionSort implements SortUtil.Sort { }9+Vf'u|l
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/*
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* (non-Javadoc) !nF.whq
* pq]>Ep
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m2F+6G
*/ 2o0WS~}5
public void sort(int[] data) { SFqq(K2u
int temp; 9['>$ON
for (int i = 0; i < data.length; i++) { 1Msc:7:L
int lowIndex = i; 2j[;M-3
for (int j = data.length - 1; j > i; j--) { 2(Nf$?U@0
if (data[j] < data[lowIndex]) { ;^8X(R
lowIndex = j; ,B,0o*qc{K
} BR~+CBH
} asYUb&Hz88
SortUtil.swap(data,i,lowIndex); _^F%$K6
} =jRC4]M})
} nA+gqY6 6|
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} p4Xhs@.k
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Shell排序: : Z3]Dk;y
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package org.rut.util.algorithm.support; ZgxpHo
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import org.rut.util.algorithm.SortUtil; )79F"ltzh
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/** tLGNYW!K
* @author treeroot #-g2p?+i&
* @since 2006-2-2 .gw6W0\F
* @version 1.0 `Fb%vYf
*/ 5>h#
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public class ShellSort implements SortUtil.Sort{ n<>]7-
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/* (non-Javadoc) 3MHByT%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R=L-Ulhk
*/ ER<Z!*2
public void sort(int[] data) { snny!
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for(int i=data.length/2;i>2;i/=2){ W0# VD e]>
for(int j=0;j insertSort(data,j,i); R^6^{q
} K`kWfPwp
} .wcKG9u
insertSort(data,0,1); q>VvXUyK,
} 3O?[Yhk`.
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/** 257q%"
* @param data ->&amPv
* @param j '\Uy;,tu /
* @param i WL<f!
*/ PE2O$:b\
private void insertSort(int[] data, int start, int inc) { U~<~>^[
int temp; ^W[3RiG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Fr,b5 M<L7
} Ng\]
} S6c>D&Q
} U5H5QW +
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} r} a,
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快速排序: z;EDyd,O>
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package org.rut.util.algorithm.support; ]"U/3dL5
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import org.rut.util.algorithm.SortUtil; 8?$XT
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/** /m+.5Qz9)@
* @author treeroot dqw0ns.2
* @since 2006-2-2 mUwGr_)wj
* @version 1.0 X%Ta?(9|.^
*/ w;V+)r?w
public class QuickSort implements SortUtil.Sort{ ^e1mK4`
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/* (non-Javadoc) lC=T{rR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8"J6(KS
*/ v cb}Gk
public void sort(int[] data) { ~> 5
quickSort(data,0,data.length-1); O3(H_(P
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private void quickSort(int[] data,int i,int j){ M[Mx
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int pivotIndex=(i+j)/2; WizVw&Iv
file://swap v'u}%FC
SortUtil.swap(data,pivotIndex,j); XM?C7/^k
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int k=partition(data,i-1,j,data[j]); a*Ng+~5)6
SortUtil.swap(data,k,j); p/Lk'h~
if((k-i)>1) quickSort(data,i,k-1); Yq-7!
if((j-k)>1) quickSort(data,k+1,j); )F%zT[Auph
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} :.W</o~\s
/** 2M?L++i
* @param data Ve\P ,.
* @param i _t\)W(E&
* @param j 8fQaMn4V
* @return E3h-?ugO'
*/ 3 bll9Ey
private int partition(int[] data, int l, int r,int pivot) { Ip;;@o&D
do{ "$N 4S9U
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ug9]^p/)^
SortUtil.swap(data,l,r); JS0957K
} .Wvg{ S-
while(l SortUtil.swap(data,l,r); !v]~ut !p
return l; _Wo(;'.
} j9$kaEf
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} 5Q@4@b{C
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改进后的快速排序: -v?)E
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package org.rut.util.algorithm.support; )r:gDd#/X
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import org.rut.util.algorithm.SortUtil; +We=- e7
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/** 1Et{lrgh
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* @author treeroot Xa/]}
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* @since 2006-2-2 6YYDp&nqEj
* @version 1.0 aUEnQ%YU"
*/ NC{8[*Kx5
public class ImprovedQuickSort implements SortUtil.Sort { hZeF? G)L'
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private static int MAX_STACK_SIZE=4096; kaZ_ra;<
private static int THRESHOLD=10; teg[l-R"7z
/* (non-Javadoc) pDG>9P#mO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t[b@P<F
*/ {DbWk>[DkG
public void sort(int[] data) { -owap-Va
int[] stack=new int[MAX_STACK_SIZE]; n_46;lD
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int top=-1; ;&]oV`Ib
int pivot; z%Ivc*x5
int pivotIndex,l,r; UViWejA/*u
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stack[++top]=0; u_X(c'aE;
stack[++top]=data.length-1; (c1Kg
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while(top>0){ |NXe{q7{
int j=stack[top--]; ='\E+*[$I
int i=stack[top--]; .*g^
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pivotIndex=(i+j)/2; o9AwW
pivot=data[pivotIndex]; ~MLBO
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SortUtil.swap(data,pivotIndex,j); ?4MZT5 .
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file://partition HWi: CDgm
l=i-1; H0Ck%5
r=j; ^ lM.lS>)
do{ wb/@g=`d
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eAbp5}B
SortUtil.swap(data,l,r); }tUr
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} n3JSEu;J
while(l SortUtil.swap(data,l,r); u1_NC;
SortUtil.swap(data,l,j); Ebytvs,w
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if((l-i)>THRESHOLD){ C'xWRSDO
stack[++top]=i; Q(ec>+oi
stack[++top]=l-1; O*+,KKPt
} @RFJe$%
if((j-l)>THRESHOLD){ k|[86<&[
stack[++top]=l+1; 7G 5VwO
stack[++top]=j; 8Xk,Nbcqt
} Ts
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} 8VR!
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file://new InsertSort().sort(data); k{w
insertSort(data); QKtVwsz
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} )SsO,E+t=U
/** a
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* @param data *4RL
*/ Xrd-/('2
private void insertSort(int[] data) { T96M=?wh!
int temp; ^DOQ+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B5H=#
} :`20i*
} wBIhpiJX0
} SbN.z
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} D|E,9|=v
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归并排序: OZi4S3k
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package org.rut.util.algorithm.support; uEcK0>xp
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import org.rut.util.algorithm.SortUtil; XI58Cy*!
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/** b{hdEb
* @author treeroot i@hW" [A
* @since 2006-2-2 6V6,m4e
* @version 1.0 >q)VHV9P
*/ |!.VpN&
public class MergeSort implements SortUtil.Sort{ HC/?o0
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/* (non-Javadoc) i $;y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S# sar}-I
*/ R?H[{AX
public void sort(int[] data) { &(YNz9L
int[] temp=new int[data.length]; 5Int,SX
mergeSort(data,temp,0,data.length-1); t6a$ZN;
} 7/GL@H
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private void mergeSort(int[] data,int[] temp,int l,int r){ F=r`'\JV[
int mid=(l+r)/2; o1]Ze F
if(l==r) return ; h^=9R6im
mergeSort(data,temp,l,mid); RqRyZ*n
mergeSort(data,temp,mid+1,r); Nr:%yvk%s
for(int i=l;i<=r;i++){ sRDxa5<MD
temp=data; 4&+lc*
} GP;UuQz
int i1=l; tA]Y=U+Q
int i2=mid+1; ])iw|`@dJ
for(int cur=l;cur<=r;cur++){ +EE(d/f
if(i1==mid+1) W+ D{4:
data[cur]=temp[i2++]; Nvj0MD{ X
else if(i2>r) rX@?~(^ML
data[cur]=temp[i1++]; Spt;m0W90
else if(temp[i1] data[cur]=temp[i1++]; +W[NgUrGJ
else {;E]#=|
data[cur]=temp[i2++]; U.p"JSH
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} wA?q/cw C
} N/i {j.=
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} z{ MO~d9
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改进后的归并排序: (H-}z`sy/@
~e#QAaXD#5
package org.rut.util.algorithm.support; Q]<6i
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import org.rut.util.algorithm.SortUtil; ry!0~ir
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/** o%.0@W
* @author treeroot YH/3N(],
* @since 2006-2-2 y(h"0A1lW
* @version 1.0 R"V^%z;8o
*/ APM!xX=N
public class ImprovedMergeSort implements SortUtil.Sort { )2mvW1M=7;
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private static final int THRESHOLD = 10; Yo;Mexo!
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/* pIP^/H
* (non-Javadoc) N@G~+GCxL
* &JHqUVs^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ypV>*
*/ j2%?-(U
public void sort(int[] data) { Os"T,`F2s
int[] temp=new int[data.length]; !@wG22iC4d
mergeSort(data,temp,0,data.length-1); #xBh62yIuP
} ~;P>}|6Y
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private void mergeSort(int[] data, int[] temp, int l, int r) { %% A==_b
int i, j, k; *e}1KcJ
int mid = (l + r) / 2; -G@:uxB
if (l == r) jpRC6b?
return; 6qH^&O][
if ((mid - l) >= THRESHOLD) d
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mergeSort(data, temp, l, mid); o=ULo &9
else P[<EFjE
insertSort(data, l, mid - l + 1); &