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。 U$& '> %#
插入排序: h@G~'\8t
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package org.rut.util.algorithm.support; tO:JB&vO2
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import org.rut.util.algorithm.SortUtil; HdB>CVuh
/** W.jXO"pN
* @author treeroot }YFM40H
* @since 2006-2-2 Mh5>
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* @version 1.0 Q[rZ1z
*/ Rk3
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public class InsertSort implements SortUtil.Sort{ AguE)I&m
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/* (non-Javadoc) yxp,)os:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :;]9,n
*/ v
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public void sort(int[] data) { /3~L#jS
int temp; .7gh2K
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WK(X/!1/k
} UgS`{&b36
} x"NQatdq
} Ue
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冒泡排序: Q'Osw"
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package org.rut.util.algorithm.support; 7)r]h?
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import org.rut.util.algorithm.SortUtil; D^US2B
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/** \?T9v
* @author treeroot zHX\h[0f
* @since 2006-2-2 Fw\Z[nh
* @version 1.0 ckA\{v
*/ 0ck3II
public class BubbleSort implements SortUtil.Sort{ i:0v6d
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/* (non-Javadoc) 2WFZ6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $a*7Q~4
*/ =N\; ?eF(
public void sort(int[] data) { P{6$".kIY
int temp; Rq5'=L
for(int i=0;i for(int j=data.length-1;j>i;j--){ '!7>*<
if(data[j] SortUtil.swap(data,j,j-1); '%[ Y
} goIvm:?
}
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} {&IB[Y6
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选择排序: :) lG}c
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package org.rut.util.algorithm.support; 'QT~o-U
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import org.rut.util.algorithm.SortUtil; W{"sB:E
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/** lTMY|{9
* @author treeroot O?Bf (y
* @since 2006-2-2 v7
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* @version 1.0 nXLz<wE
*/ ?o;ip
public class SelectionSort implements SortUtil.Sort { Mu[lk=jC
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/* Intuda7e1
* (non-Javadoc) zY_J7,0g
* *O~y6|U?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `5Kg[nB:
*/ y%i9 b&gDd
public void sort(int[] data) { Qq`S=:}~x
int temp; F~
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for (int i = 0; i < data.length; i++) { 3LLG#l)8
int lowIndex = i; qS/}aDk&
for (int j = data.length - 1; j > i; j--) { 7 mCf*|
if (data[j] < data[lowIndex]) { 5:IDl1f5
lowIndex = j; I 0~'z f
} .h=n [`RB
} @c]KHWI
SortUtil.swap(data,i,lowIndex); {S{ %KkAV
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Shell排序: y2_rm
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package org.rut.util.algorithm.support; mcd{:/^?
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import org.rut.util.algorithm.SortUtil; 8j#S+=l>
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/** V
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* @author treeroot DlUKhbo$g
* @since 2006-2-2 Q`9c/vPU
* @version 1.0 =SLG N`m3
*/ dXh[Ea^
public class ShellSort implements SortUtil.Sort{ vYV!8o.I
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/* (non-Javadoc) ),p0V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M/p9 I
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*/ LRu,_2"
public void sort(int[] data) { r89AX{:
for(int i=data.length/2;i>2;i/=2){ prj(
for(int j=0;j insertSort(data,j,i); 940:NOgm
} DH?n~qKpC
} i;1pw_K
insertSort(data,0,1); 'z"vk
} 9Y.(xp &vw
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/** hE {";/}J
* @param data I:TbZ*vi~
* @param j "Wg,]$IvU
* @param i S=r0tao,!v
*/ W9%v#;2
private void insertSort(int[] data, int start, int inc) { A,_O=hA2I
int temp; 9-T<gYl
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >XgJo7u
} Pb'(Y
} 'z8FU~oU
} ~x,_A>a
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} EN2t}rua
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快速排序: eTp|!T
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package org.rut.util.algorithm.support; [ *Dj:A)V^
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import org.rut.util.algorithm.SortUtil; GFdbwn5B
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/** * |,N/e
* @author treeroot ^yPZ$Q
* @since 2006-2-2 [=(8yUV'G
* @version 1.0 lZ-U/$od
*/ ~-zIB=TyK
public class QuickSort implements SortUtil.Sort{ ,N(Yjq"R
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/* (non-Javadoc) hEB5=~A_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jV}8VK*`+
*/ 0beP7}$
public void sort(int[] data) { /X_L>or
quickSort(data,0,data.length-1); ]_h3
} j2Dw7"f3
private void quickSort(int[] data,int i,int j){ z+yq%O
int pivotIndex=(i+j)/2; kZG .Id
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SortUtil.swap(data,pivotIndex,j); >O\+ 9T@
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int k=partition(data,i-1,j,data[j]); _dm0*T ?
SortUtil.swap(data,k,j); @KL&vm(F$
if((k-i)>1) quickSort(data,i,k-1); F^gTID
if((j-k)>1) quickSort(data,k+1,j); Bn]=T
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} jXeE]A"
/** Csuasi3]1d
* @param data vT EqT
* @param i J1}\H$*X
* @param j -E?:W`!
* @return %FYhq:j
*/ 5\pS8<RJ;
private int partition(int[] data, int l, int r,int pivot) { 7_2D4CI
do{ eY :"\c3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =T9h7c R
SortUtil.swap(data,l,r); vIJ5iLF
} N-upNuv
while(l SortUtil.swap(data,l,r); [<53_2]~
return l; >Y08/OAI.2
} jlP*RX
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} `*vO8v
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改进后的快速排序: teS>t!d
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package org.rut.util.algorithm.support; ym{@w3"S
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import org.rut.util.algorithm.SortUtil; 1]:,Xa+|S
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/** [gBf1,bK
* @author treeroot A6=Z2i0w>X
* @since 2006-2-2 by>%}#M
* @version 1.0 Z2M(euzfi3
*/ Y|LL]@Lv
public class ImprovedQuickSort implements SortUtil.Sort { `6VnL)
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private static int MAX_STACK_SIZE=4096; 3tf_\E+mIi
private static int THRESHOLD=10; 4uiq'-
/* (non-Javadoc) i6V$m hL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6#U~>r/
*/ rQ*w3F?:
public void sort(int[] data) { iXm&\.%
int[] stack=new int[MAX_STACK_SIZE]; &b#d4p6&l
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int top=-1; mj'~-$5T
int pivot; ltuV2.$
int pivotIndex,l,r; Vx<{cHQQ
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stack[++top]=0; +=J$:/&U
stack[++top]=data.length-1; Em&3g
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while(top>0){ 4JK6<Pk
int j=stack[top--]; nCi
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int i=stack[top--]; W5Z-s.o
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pivotIndex=(i+j)/2; SEI0G_wk$
pivot=data[pivotIndex]; o>M^&)Xs
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SortUtil.swap(data,pivotIndex,j); e^eJ!~0
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file://partition xH2'PEjFM
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r=j; R7Qj<,
do{ #k9&OS?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [ojL9.6
SortUtil.swap(data,l,r); c(=>5
} =7+%31
while(l SortUtil.swap(data,l,r); KuwhA-IL
SortUtil.swap(data,l,j); ;t +p2i
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if((l-i)>THRESHOLD){ S Q:H2vvD
stack[++top]=i; bji#ID2]%
stack[++top]=l-1; @\F7nhSfa
} $EY[CA
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if((j-l)>THRESHOLD){ /UunWZ u%
stack[++top]=l+1; &C
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stack[++top]=j; E?+~S M1~
} P WS8Dpb
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} R7rM$|n=o
file://new InsertSort().sort(data); _:\rB
insertSort(data); Q(<A Yu
} PFpFqJ)Cs"
/** dsw^$R}
* @param data E&J<qTH9
*/ RTVU3fw
private void insertSort(int[] data) { 4Vi*Qa_,y
int temp; =b$g_+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2j4202
} &PPnI(s^K
} EC$F|T0f
} B)7 :*Kj
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} e*'bY;8lo
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归并排序: vfqXHc
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package org.rut.util.algorithm.support; {P?Ge
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import org.rut.util.algorithm.SortUtil; Po=:-Of:
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/** ^e^-1s
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* @author treeroot agfDx^,
* @since 2006-2-2 L$c 1<7LU
* @version 1.0 B>E4,"
*/ 7Q{&L#;
public class MergeSort implements SortUtil.Sort{ b [HnhAI
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/* (non-Javadoc) O=U,x-Wl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ds(X[7XGW
*/ LiHJm-
public void sort(int[] data) { Mm8_EjMp
int[] temp=new int[data.length]; \68bXY.
mergeSort(data,temp,0,data.length-1); _lI(!tj(
} H$?MPA-c
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private void mergeSort(int[] data,int[] temp,int l,int r){ ,+BFpN'
int mid=(l+r)/2; *8qRdI9
if(l==r) return ; "d/54PKWx
mergeSort(data,temp,l,mid); "T /$K
mergeSort(data,temp,mid+1,r); O(evlci
for(int i=l;i<=r;i++){ N@0/=B[n
temp=data; c%G~HOE=B
}
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int i1=l; n. N0Nhd
int i2=mid+1; Kc]
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for(int cur=l;cur<=r;cur++){ r9}(FL/)b
if(i1==mid+1) (~\HizSl
data[cur]=temp[i2++];
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else if(i2>r) 9ox5,7ZQ
data[cur]=temp[i1++]; S9:ij1
else if(temp[i1] data[cur]=temp[i1++]; y46sL~HRv
else "?aE3$/
data[cur]=temp[i2++]; W{JR%Sq$
} d>J
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} KDg%sgRu}
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} T^8`ji
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改进后的归并排序: 0@'-g^PS
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package org.rut.util.algorithm.support; X..M!3W
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import org.rut.util.algorithm.SortUtil; {nZP4jze
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