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。 8$v zpu
插入排序: 04guud }
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package org.rut.util.algorithm.support; 4m~7 ~- h
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import org.rut.util.algorithm.SortUtil; PIEW \i
/** (#B^Hyz!
* @author treeroot 9c^skNbS
* @since 2006-2-2 3> \fP#oQ
* @version 1.0 .D,?u"fk|
*/ @?3vRs}h
public class InsertSort implements SortUtil.Sort{ i=1 }lkq
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/* (non-Javadoc) A?Nn>xF9X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e-iYJ?
*/ @0ov!9]Rw-
public void sort(int[] data) { -|Yh/
int temp; jj3Pf>D+k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x'2 ,sE
} KIKq9 *
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冒泡排序: mX@j
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package org.rut.util.algorithm.support; cB ab2/
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import org.rut.util.algorithm.SortUtil; #juGD9e
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/** emv ;m/&8
* @author treeroot +MNSZLP]
* @since 2006-2-2 E 4='m
* @version 1.0 B:O+*3j
*/ M)"]$TM
public class BubbleSort implements SortUtil.Sort{ MUbhEau?
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/* (non-Javadoc) 5ys#L&q'Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J4gI=@e
*/ e86Aqehle
public void sort(int[] data) { pXPqDA
int temp; /B,B4JI)/
for(int i=0;i for(int j=data.length-1;j>i;j--){ =$b-xsmeG
if(data[j] SortUtil.swap(data,j,j-1); E\R raPkQT
} W
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} 0\5M^:8i3
} ;JOD!|
} t/JOERw
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选择排序: M[h1>}$Lz
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package org.rut.util.algorithm.support; j';n8|Y9
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import org.rut.util.algorithm.SortUtil; M0O>Ljo4RN
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/** Rr+qgt;f5
* @author treeroot #mgA/q?A
* @since 2006-2-2 `aO.=:O_
* @version 1.0 4JGE2ArR
*/ g9DG=\*A
public class SelectionSort implements SortUtil.Sort { 8W-]t1O%!
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/* &}zRH}s;
* (non-Javadoc) /"(b.&
* M'^(3#ZU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +->\79<#V(
*/ |xq}'.C
public void sort(int[] data) { +``>,O6
int temp; 9n_ eCb)H
for (int i = 0; i < data.length; i++) { mH'\:oN
int lowIndex = i; HKpD2M
for (int j = data.length - 1; j > i; j--) { v-ThdE$G#
if (data[j] < data[lowIndex]) { N%O[
lowIndex = j; }g}6qCv7
} )j\r,9<K+5
}
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SortUtil.swap(data,i,lowIndex); AvZXRN1:'
} SLSF
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Shell排序: CP +4k.)*O
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package org.rut.util.algorithm.support; s}jlS
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import org.rut.util.algorithm.SortUtil; #`vVgGZ&
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/** 0"TgLd
* @author treeroot kr#I{gF
* @since 2006-2-2 [1<(VyJ}ye
* @version 1.0 Im6U_JsNZh
*/ C]/&vh7ta
public class ShellSort implements SortUtil.Sort{ ^ZR8s^X
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/* (non-Javadoc) 2@fa
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (X*9w##x(
*/ jSB'>m]
public void sort(int[] data) { *y{+W
for(int i=data.length/2;i>2;i/=2){ "tKNlHBu'
for(int j=0;j insertSort(data,j,i); Gp,'kw"I
} <E SvvTf
} {(%~i37
insertSort(data,0,1); G&jZ\IV
} X3AwM%,!
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/** %0lf
* @param data 5:$Xtq
* @param j bGu([VB
* @param i q4+Yv2e
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*/ 9Yn)t#G'`F
private void insertSort(int[] data, int start, int inc) { nW11wtiO.
int temp; )L >Q;'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?&6Q%IUW1
} T!(sZf
} {gw[%[ZM
} gn^!"MN+g
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}
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快速排序: oJh"@6u6K
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package org.rut.util.algorithm.support; /~tP7<7A
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import org.rut.util.algorithm.SortUtil; ?;_O
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/** >P<'L4;
* @author treeroot !UVk9
* @since 2006-2-2 -zdmr"CA
* @version 1.0 EWO /u.z
*/ hVkO%]?
public class QuickSort implements SortUtil.Sort{ @+E7w6>%
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/* (non-Javadoc) 9>;} /*:H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2eHx"Ha
*/ "O``7HA}
public void sort(int[] data) { m
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quickSort(data,0,data.length-1); 6#vI;d[^
} 9$wAm89
private void quickSort(int[] data,int i,int j){ h9jc,Xu5X
int pivotIndex=(i+j)/2; 5aG5BA[N
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SortUtil.swap(data,pivotIndex,j); [[X+P 0`r
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int k=partition(data,i-1,j,data[j]); zIm-X,~I$
SortUtil.swap(data,k,j); h;nQxmJ9
if((k-i)>1) quickSort(data,i,k-1); \?dTH:v/E
if((j-k)>1) quickSort(data,k+1,j); [4: Yi{>
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} -x5F;d}
/** {[tZ.1.w
* @param data 6bUl>4
* @param i &oEyixe
* @param j {mf.!Xev
* @return wV>c" J
*/ 7f
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private int partition(int[] data, int l, int r,int pivot) { o} {-j
do{ zofx+g\(W
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G1[(F`t>
SortUtil.swap(data,l,r); [8z&-'J=
} #a'r_K=ch)
while(l SortUtil.swap(data,l,r); U!Mf]3
return l; ~of,,&
} T%~SM5
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} \Z'/+}^h
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改进后的快速排序: K_&_z
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package org.rut.util.algorithm.support; I=odMw7Hj
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import org.rut.util.algorithm.SortUtil; R\y'_S=#a
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/** #g{Mne
* @author treeroot *IqVY&
* @since 2006-2-2 /ao<A\KR
* @version 1.0 xW0Z'==
*/ Fs)
public class ImprovedQuickSort implements SortUtil.Sort { ,5w]\z
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private static int MAX_STACK_SIZE=4096; hIo0S8MOj$
private static int THRESHOLD=10; 3a^)u-9,x
/* (non-Javadoc) Man^<T%F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~R[&q+
*/ O{u[+g
public void sort(int[] data) { Bj=@&;
int[] stack=new int[MAX_STACK_SIZE]; C=yD3mVz
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int top=-1; Oq}ip
int pivot; gs fhH0
int pivotIndex,l,r; XR+rT
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stack[++top]=0; K( z[}
stack[++top]=data.length-1; 2NYi-@mr
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while(top>0){ fyrd`R
int j=stack[top--]; YuA7r"c
int i=stack[top--]; Z)5klg$c
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pivotIndex=(i+j)/2; #//
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pivot=data[pivotIndex]; iJ4<f->t
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SortUtil.swap(data,pivotIndex,j); NnP.k7m)
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file://partition zWtj|%ts
l=i-1; 1\IZcJ {
r=j; @.1Qs`pt
do{ m#;.yR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c&b/Joi7@
SortUtil.swap(data,l,r); b*`fLrqV.
} 8yvJ`eL-
while(l SortUtil.swap(data,l,r); ?uig04@3
SortUtil.swap(data,l,j); H>Ks6V)RL4
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if((l-i)>THRESHOLD){ d=F)y~&'
stack[++top]=i; 5!8-)J-H
stack[++top]=l-1; #r(a~
} [NjajA~z>F
if((j-l)>THRESHOLD){ 61kO1,Uz*
stack[++top]=l+1; DP0Z*8Ia
stack[++top]=j; )%BT*)x
} ]o `4Z"
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} TG?fUD V
file://new InsertSort().sort(data); R@&?i=gk
insertSort(data); 9!cW
} tpE3|5dZF
/** t9]r
* @param data [RW,{A
*/ z30= ay1
private void insertSort(int[] data) { /CbkqNV
int temp; 5uzpTNAMM1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pIL`WE1'
} oR7 7`
} H&9wSG`
} y^3,X_0
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归并排序: oUCVd}wH
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package org.rut.util.algorithm.support; #i6[4X?
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import org.rut.util.algorithm.SortUtil; ayHn_
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/** []!tT-Gzy
* @author treeroot i;gw=Be
* @since 2006-2-2 H9/XW6W,"w
* @version 1.0 s9=pV4fA~w
*/ r*xq(\v
public class MergeSort implements SortUtil.Sort{ S".owe$\
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/* (non-Javadoc) N IO;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zv>ZrFl*
*/ H)-L%l|9
public void sort(int[] data) { 9[B<rz
int[] temp=new int[data.length]; L>eQ*311
mergeSort(data,temp,0,data.length-1); H;4oZ[g
} zaQ$ Ht
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private void mergeSort(int[] data,int[] temp,int l,int r){ lrM.RM96
int mid=(l+r)/2; Ey
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if(l==r) return ; Be'?#Qe
mergeSort(data,temp,l,mid); \nn56o@eN
mergeSort(data,temp,mid+1,r); % jYQ
for(int i=l;i<=r;i++){ (v9!g#
temp=data; "0p +SZ~D
} Tq_1wX'\
int i1=l; q_OY sg
int i2=mid+1; )cfp(16
for(int cur=l;cur<=r;cur++){ 2y&_Z^kI?
if(i1==mid+1) PTfN+
data[cur]=temp[i2++]; +ytT)S
else if(i2>r) e/g<<f-
data[cur]=temp[i1++]; $sB48LJuU'
else if(temp[i1] data[cur]=temp[i1++]; cN0~;!{i
else ~GsH8yA_P
data[cur]=temp[i2++]; A?%XO
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} UtHmM,*I
} S}XB
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} xF\}.OfWG
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