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。 :Q0?ub]
插入排序: T +|J19
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package org.rut.util.algorithm.support; w yuJSB
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import org.rut.util.algorithm.SortUtil; 0`aHwt/F
/** fJ|Bu("N
* @author treeroot ==r?
* @since 2006-2-2 8VBkI Ygb
* @version 1.0 o}j_eHl{
*/ `"^@[1
public class InsertSort implements SortUtil.Sort{ *;V2_fWJ@
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/* (non-Javadoc) !/=9VD{U!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NoSqzJyh
*/ wnZ*k(
public void sort(int[] data) { pU'`9fLi_
int temp; VygXhh^7\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9>}(]T
} ||"":K
} ^|a&%wxA
} .aAw7LW
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} hz>yv@1
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冒泡排序: o#KPrW`XJ/
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package org.rut.util.algorithm.support; $O8EiC!f6
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import org.rut.util.algorithm.SortUtil; k*UR#z(I
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/** Rp4BU"&sU
* @author treeroot KWZNu&)
* @since 2006-2-2 EcS-tE4%
* @version 1.0 C>(M+qXL+
*/ q}7Df!<|
public class BubbleSort implements SortUtil.Sort{ %(wsGNd
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/* (non-Javadoc) 5jCEy*%P@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bju,p"J1-E
*/ m= beB\=
public void sort(int[] data) { )uv$tnP*
int temp; `- uZv
for(int i=0;i for(int j=data.length-1;j>i;j--){ nbkky.e
if(data[j] SortUtil.swap(data,j,j-1); e^l+#^fR
} ;r@R (Squ
} ~?8x0
} kI1{>vYD
} 5F_:[H =
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} "=5vgg3
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选择排序: cK}
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package org.rut.util.algorithm.support; cE8 _keR~
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import org.rut.util.algorithm.SortUtil; }Us$y0W\
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/** L5N{ie_
* @author treeroot (j 8,n<o
* @since 2006-2-2 #,9TJ:~N
* @version 1.0 W;@ae,^
*/ ?Dp^dR
public class SelectionSort implements SortUtil.Sort { z{M,2
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/* Dp |FyP_w
* (non-Javadoc) 3*23+}^G
* O?J:+L(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >mDubP
*/ 5qB=@O]|G;
public void sort(int[] data) { C-
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int temp; %_=R&m'n`
for (int i = 0; i < data.length; i++) { 1kw4'#J8
int lowIndex = i; JY8"TQ$x
for (int j = data.length - 1; j > i; j--) { N S}`(N
if (data[j] < data[lowIndex]) { zMqEMx9
lowIndex = j; rxk{Li<9
} t4c#' y
} scEQDV
SortUtil.swap(data,i,lowIndex); '9Odw@tp
} 7?WBzo!!L
} y8n1IZ*#SZ
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} cZT.vA#
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Shell排序: ?
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package org.rut.util.algorithm.support; =9@yJ9c-
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import org.rut.util.algorithm.SortUtil; R*fR?
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/** 8mddI
* @author treeroot GQBN-Qv
* @since 2006-2-2 F76h
* @version 1.0 Ou,_l
*/ BtApl)q#
public class ShellSort implements SortUtil.Sort{ B;je|M!d
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/* (non-Javadoc) $s!meg@s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PzkXrDlB7
*/ l;kZS
public void sort(int[] data) { f+~!s 2uw
for(int i=data.length/2;i>2;i/=2){ x}j41E}
for(int j=0;j insertSort(data,j,i); <t@*[Aw
} $zi\ /Yw
} rL"k-5>fd
insertSort(data,0,1); ;>Qd )'
} J :(\o=5 5
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/** DK%eFCo<~
* @param data 4 Z)]Cq*3
* @param j gOAluP
* @param i #_\~Vrf(#
*/ +[`%b3N k
private void insertSort(int[] data, int start, int inc) { 2oASz|
int temp; z59J=?|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _3[BS9
} k<qH<<r*
} Q6>( Z
} OG`Oi^2
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} J)NpG9iN
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快速排序: 3Gv
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package org.rut.util.algorithm.support; #9Z-Hd<
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import org.rut.util.algorithm.SortUtil; `I$A;OPK7
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/** v%[mt`I
* @author treeroot .`].\Zykf
* @since 2006-2-2 zY-m]7Yf
* @version 1.0 4[q *7m
*/ hNy S
public class QuickSort implements SortUtil.Sort{ iN*@f8gf
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/* (non-Javadoc) a06DeRCej
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h@d
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*/ Qrh9JFqdG6
public void sort(int[] data) { M-gjS6c\3
quickSort(data,0,data.length-1); k_B^2=
} 1-#tx*>AY
private void quickSort(int[] data,int i,int j){ qT4s*kqr
int pivotIndex=(i+j)/2; :ux`*,zh
file://swap y]_DW6W
SortUtil.swap(data,pivotIndex,j); ]u ';zJ.
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int k=partition(data,i-1,j,data[j]); (1^(V)@
SortUtil.swap(data,k,j); Eqc$*=
if((k-i)>1) quickSort(data,i,k-1); 8Yh2K}
if((j-k)>1) quickSort(data,k+1,j); T_WQzEL^
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} ?H&p zY~H
/** ks}o9[D3
* @param data RAC-;~$WB
* @param i :-)[B^0
* @param j $u :=lA:N
* @return bBX~ZWw
*/ w3@te\
private int partition(int[] data, int l, int r,int pivot) { 2wd(0K}b
do{ fVM%.`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _*9Zp1r
SortUtil.swap(data,l,r); Gm.hBNgp
} Z=|@76
while(l SortUtil.swap(data,l,r); yl}Hr*
return l; nCrNZ&P
} W5p}oN
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} L2qF@!Yy=
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改进后的快速排序: ?P5D!b:(
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package org.rut.util.algorithm.support; Nd6z81
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import org.rut.util.algorithm.SortUtil; *s^5BLI9
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/** p,Z6/e[SI
* @author treeroot 4Qv|Z+$i
* @since 2006-2-2 0e7!_/9
* @version 1.0 O v-I2
*/ UZ1lI>
public class ImprovedQuickSort implements SortUtil.Sort { MWl@smRh
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private static int MAX_STACK_SIZE=4096; 0pR04"`;
private static int THRESHOLD=10; N(9'U0z
/* (non-Javadoc) ^Z*_@A _v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cn,jLy
*/ MiC&av
public void sort(int[] data) { `#R$
int[] stack=new int[MAX_STACK_SIZE]; p})&Zl)V
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int top=-1; eYa gI
int pivot; qSQjAo4t@
int pivotIndex,l,r; Cpj_mMtu
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stack[++top]=0; ,Xn%-OT
stack[++top]=data.length-1; alG}Aw#gS
9$ _}E`
while(top>0){ ESs)|t h
int j=stack[top--]; 6?_Uow}
int i=stack[top--]; 5}m2D='
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pivotIndex=(i+j)/2; L^=>)\R2$[
pivot=data[pivotIndex]; B4.hJZ5
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SortUtil.swap(data,pivotIndex,j); dI>oHMC
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file://partition [p<L*3<
l=i-1; 53L)+\7w
r=j; ?FA:K0H?zl
do{ /
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I[&!\Me[+w
SortUtil.swap(data,l,r); D^A_ 0@
} %PG0PH4?
while(l SortUtil.swap(data,l,r); qYpHH!!C=
SortUtil.swap(data,l,j); ZK13[_@9
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if((l-i)>THRESHOLD){ b*bR<|dT j
stack[++top]=i; ^iGIF~J9
stack[++top]=l-1; @<};Bo'
} wHAh6lm
if((j-l)>THRESHOLD){ @p!["v&
stack[++top]=l+1; 4
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stack[++top]=j; o$Jk27
} rf9RG!
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} ]03!KE
file://new InsertSort().sort(data); XL+kEZ|3
insertSort(data); ^ML2xh
} s#d>yx_b
/** >z(6ADq
* @param data J+9D/VT
*/ ^m5{:\
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private void insertSort(int[] data) { B a Xzz
int temp; p>MX}^6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p1 o?^A&
} >s1HQSe66
} R+^/(Ws'<
} MxCs0::w
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} '2%hc\P6P
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归并排序: 7}nOF{RH]
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package org.rut.util.algorithm.support; 7C&`i}/t
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import org.rut.util.algorithm.SortUtil; z9VQsC'K
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/** >f_D|;EV
* @author treeroot wl!'Bck=
* @since 2006-2-2 ZkqC1u3
* @version 1.0 smWA~Aq
*/ bf}r8$,
public class MergeSort implements SortUtil.Sort{ U:`rNHl
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/* (non-Javadoc) 0V1kZ.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *gBaF/C
*/ =r
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public void sort(int[] data) { 60hf)er
int[] temp=new int[data.length]; 8_KXli}7=
mergeSort(data,temp,0,data.length-1); jP+4'O!s[
} LxMOs Nv
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private void mergeSort(int[] data,int[] temp,int l,int r){ mTcLocx
int mid=(l+r)/2; H4%wq
if(l==r) return ; ]ImS@!Ajjx
mergeSort(data,temp,l,mid); %S@XY3jZY
mergeSort(data,temp,mid+1,r); y 5=J6a2.
for(int i=l;i<=r;i++){ O" T1=4
temp=data; +LrW#K;
} \2~.r/`1
int i1=l; ZW,PZ<
int i2=mid+1; &M<431y
for(int cur=l;cur<=r;cur++){ )TXn7{M:
if(i1==mid+1) ~-.q<8
data[cur]=temp[i2++]; g|2D(J
else if(i2>r) ;M}bQ88
data[cur]=temp[i1++]; }LE.kd&
else if(temp[i1] data[cur]=temp[i1++]; yQ&;#`!'
else 0E+ +
data[cur]=temp[i2++]; `.><$F
} CVu'uyy
} ,/Xxj\i
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} 'd/A+W
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改进后的归并排序: =L&_6