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。 6*?F @D2&
插入排序: E^PB)D(.
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package org.rut.util.algorithm.support; oU|c.mYe
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import org.rut.util.algorithm.SortUtil; B!yr!DWv
/** dx]>(e@(t{
* @author treeroot /?!u{(h }
* @since 2006-2-2 |{;G2G1[
* @version 1.0 s{++w5s
*/ :,^gj
public class InsertSort implements SortUtil.Sort{ K,]=6Rj
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/* (non-Javadoc) )[ ,A_3E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g0
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*/ .hiSw
public void sort(int[] data) { -di o5a
int temp; mmsPLv6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wBzC5T%,
} VL^EHb7
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冒泡排序: E4!Fupkpf
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package org.rut.util.algorithm.support; +"(jjxJm
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import org.rut.util.algorithm.SortUtil; /(T?j!nPE
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/** Qd6F H2Pl
* @author treeroot *VeRVaBl
* @since 2006-2-2 5;S.H#YOpO
* @version 1.0 E9}C #
*/ zQA`/&=Y
public class BubbleSort implements SortUtil.Sort{ H"KCK6
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/* (non-Javadoc) &zs$x?/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iLz@5Zj8
*/ 23?rEhKe
public void sort(int[] data) { eQ"E
int temp; h~26WLf.
for(int i=0;i for(int j=data.length-1;j>i;j--){ N7_"H>O$0U
if(data[j] SortUtil.swap(data,j,j-1); S$3JMFA
} :KN-F86i
}
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} C?Ucu]cW
} X.V~SeS
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选择排序: zJXplvaL;
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package org.rut.util.algorithm.support; .-=vx r
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import org.rut.util.algorithm.SortUtil; *kVV+H<X|b
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/** nie% eC&U
* @author treeroot RyN s6
* @since 2006-2-2 `kr?j:g
* @version 1.0 a>)f=uS
*/ w:l"\Tm
public class SelectionSort implements SortUtil.Sort { P_dJZ((X
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/* .KC++\{HE
* (non-Javadoc) yBRC*0+Vy
* m3ff;,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {^'HL
*/ J=L5=G7(
public void sort(int[] data) { '!$%> ||S
int temp; V+~Nalm O
for (int i = 0; i < data.length; i++) { +>9Q/E
int lowIndex = i; ap~^Ty<>
for (int j = data.length - 1; j > i; j--) { Ewm9\qmg
if (data[j] < data[lowIndex]) { v}(WaO#S
lowIndex = j; s79r@])=
} y?0nI<}}HK
} <1%$Vq
SortUtil.swap(data,i,lowIndex); tu?MY p;
} tjnIN?YT
} rs.M]8a2{&
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} PVOv[%
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Shell排序: njw|JnDv
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package org.rut.util.algorithm.support; fAmz4
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import org.rut.util.algorithm.SortUtil; Bj~+WwD)QR
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/** EzIGz[
* @author treeroot i LAscb
* @since 2006-2-2 TPY}C
* @version 1.0 rbpSg7}Q
*/ :ivf/xn
public class ShellSort implements SortUtil.Sort{ j=J/x:w_e
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/* (non-Javadoc) |CzSU1ma
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]_f<kW\1*
*/ 2m[<]$
public void sort(int[] data) { 6R5Qy]]E
for(int i=data.length/2;i>2;i/=2){ ;GI&lpKK
for(int j=0;j insertSort(data,j,i); Z)\@i=m
} K@#L)VT!
} :@)>r9N
insertSort(data,0,1); MS]r:X6
} [9 RR8
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/** 3Y~>qGQwh
* @param data 9K&:V(gmw
* @param j h}EPnC}
* @param i rbCAnwA2
*/ '=6\v!
private void insertSort(int[] data, int start, int inc) { ;\l,5EG
int temp; {_Gs*<.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZW}_Qs
} mQ=#nk$~g
} L:8q8i
} IMfqiH)
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} N36_C;K-z
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快速排序: ""D 4s
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package org.rut.util.algorithm.support; d M-%{
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import org.rut.util.algorithm.SortUtil; pD74+/DD
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/** 9I/N4sou
* @author treeroot w\brVnt
* @since 2006-2-2 t_suF$
* @version 1.0 Ki~1qu:
*/ j w9b)
public class QuickSort implements SortUtil.Sort{ \j)E5b+
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/* (non-Javadoc) 9k~8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n}77##+R&C
*/ PzR[KUK
public void sort(int[] data) { 9$m|'$p3sG
quickSort(data,0,data.length-1); C/&-l{7
} ,=mS,r7
private void quickSort(int[] data,int i,int j){ D )'bH5
int pivotIndex=(i+j)/2; TW>WHCAm
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SortUtil.swap(data,pivotIndex,j); }#E[vRf
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int k=partition(data,i-1,j,data[j]); _{Hj^}+$
SortUtil.swap(data,k,j); *~H Sy8s
if((k-i)>1) quickSort(data,i,k-1); u?{H}V
if((j-k)>1) quickSort(data,k+1,j); _]*>*XfF(
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} &yol_%C
/** vI)LB)Q
* @param data 27<
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* @param i Q1l '7N
* @param j c{LO6dNg\z
* @return 8'r[te4,
*/ PJ'E/C)i
private int partition(int[] data, int l, int r,int pivot) { CsifKHI
do{ AnvRxb.e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ff1c/c/
SortUtil.swap(data,l,r); ',4iFuY
} K!]/(V(}
while(l SortUtil.swap(data,l,r); *r% c
return l;
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} ivz5H(b
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改进后的快速排序: u=_mvN
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package org.rut.util.algorithm.support; ]}(H0?OQR
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import org.rut.util.algorithm.SortUtil; wIBO
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/** K:Q<CQ2
* @author treeroot iRi-cQVy
* @since 2006-2-2 [R7Y}k:9U
* @version 1.0 s&!a
*/ '-/xyAzS
public class ImprovedQuickSort implements SortUtil.Sort { -8rjgB~."/
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private static int MAX_STACK_SIZE=4096; mju>>\9
private static int THRESHOLD=10; Nl(3Xqov
/* (non-Javadoc) fe#\TNeQJ[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D+7Rz_=
*/ q=qcm`ce
public void sort(int[] data) { Mzw X>3x
int[] stack=new int[MAX_STACK_SIZE]; H ?y,ie#u
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int top=-1; CoAvSw
int pivot; Km6YP!i
int pivotIndex,l,r; .Twk {p
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stack[++top]=0; Y]u+\y~
stack[++top]=data.length-1; [bNx^VP*
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while(top>0){ 3K/MvNI>
int j=stack[top--]; ^_5r<{7/ :
int i=stack[top--]; gH3vk $WS
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pivotIndex=(i+j)/2; y[_Q-
pivot=data[pivotIndex]; h@WhNk7"xa
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SortUtil.swap(data,pivotIndex,j);
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file://partition 1&(V
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r=j; ~B(4qK1G
do{ f_Av3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X=8{$:
SortUtil.swap(data,l,r); M b1sF
} WPG(@zD
while(l SortUtil.swap(data,l,r); ;Nj7qt
SortUtil.swap(data,l,j); xZF}D/S?Ov
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if((l-i)>THRESHOLD){ *lw_=MXSK
stack[++top]=i; <)-Sj,
stack[++top]=l-1; ,47Y9Kz9
} PJrtMAcKq
if((j-l)>THRESHOLD){ M8b;d}XL
stack[++top]=l+1; dIBE!4 V[
stack[++top]=j; >:!X.TG$
} y(pks$
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} o\pVp bB
file://new InsertSort().sort(data); 2nIw7>.}f
insertSort(data); Jh[UtYb5
} GMl;7?RA
/** - kwXvYu\
* @param data _ T):G6C8
*/ f|lU6EkU
private void insertSort(int[] data) { i`$*Ty"x
int temp; FfPar:PHj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >!1.
} -f>%+<