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。 ft[g1
插入排序: *<! W k\
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package org.rut.util.algorithm.support; Y2Y2>^
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import org.rut.util.algorithm.SortUtil; ?s5zTT0U>$
/** y6o^ Knl
* @author treeroot
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* @since 2006-2-2 }x1mpPND
* @version 1.0 Sn/~R|3XA7
*/ G JItGq`)
public class InsertSort implements SortUtil.Sort{ (r.{v@h,dV
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/* (non-Javadoc) >1tGQ
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Fn26Rij
*/ 7
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public void sort(int[] data) { szwXr
int temp; K`FgU7g{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^[CD- #
} !DCJ2h%E[_
} m=S[Y^tR
} |pp @
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} lq_W;L
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冒泡排序: As (C8C<
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package org.rut.util.algorithm.support; 2`vCQV
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import org.rut.util.algorithm.SortUtil; C<fNIc~.
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/** ?4Z0)%6
* @author treeroot
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* @since 2006-2-2 @U:T}5)wc
* @version 1.0 ZZE
*/ q'2PG@
public class BubbleSort implements SortUtil.Sort{ g#_?Vxt
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/* (non-Javadoc) %i%Xi+{3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1qUdj[Bj
*/ p^YE"2 -
public void sort(int[] data) { u ?g!E."v
int temp; _u;^w}0
for(int i=0;i for(int j=data.length-1;j>i;j--){ #fGb M!3p
if(data[j] SortUtil.swap(data,j,j-1); 9rao&\eH
} _|TE )h
} n/?5[O-D]
} oJ8_hk<Va8
} 2,&lGyV#
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} &F'v_9
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选择排序: B0z.s+.
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package org.rut.util.algorithm.support; TKLy38
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import org.rut.util.algorithm.SortUtil; G>mgoN
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/** 0dkM72p
* @author treeroot pN0c'COy^
* @since 2006-2-2 I I>2\d|
* @version 1.0 sjTsaM;<
*/ [k'Ph33c
public class SelectionSort implements SortUtil.Sort { ;wQWt_OtuJ
% C
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/* :GK{JP
* (non-Javadoc) j5'Jp}
* 6>=>Yj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `8dE8:#Y
*/ Xp} vJl
public void sort(int[] data) { ~#a1]w
int temp; @IiT8B
for (int i = 0; i < data.length; i++) { >>$IHz4Z"
int lowIndex = i; RaU.yCYyu
for (int j = data.length - 1; j > i; j--) { dWqFP
if (data[j] < data[lowIndex]) { 4(aesZ8h
lowIndex = j; 7-o=E=
} iQ9#gPk_9
} U[A*A^$c}
SortUtil.swap(data,i,lowIndex); Ab2g),;c
} CY>NU
} l(]\[}.5
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} Ve8!
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Shell排序: z t,-O7I'1
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package org.rut.util.algorithm.support; k9Sqp:l,
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import org.rut.util.algorithm.SortUtil; |Lhz^5/
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/** Y$ChMf
* @author treeroot R NA03
* @since 2006-2-2 amBz75N{
* @version 1.0 :x{Q
*/ :):Y6)giBD
public class ShellSort implements SortUtil.Sort{ /XSPVc<
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/* (non-Javadoc) #`p>VXBj!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GVl
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*/ @^` <iTK&p
public void sort(int[] data) { /M3D[aR<d
for(int i=data.length/2;i>2;i/=2){ z'qVEHc)
for(int j=0;j insertSort(data,j,i); 7%E1F)%
} *(vq-IE\$
} -YuvEm#f
insertSort(data,0,1); h+74W0
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} zDl, bLiJ
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/** i9xv`Ev=R
* @param data CD&m4^X5D
* @param j AltE~D/4
* @param i +uLo~GdbE
*/ 87^
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private void insertSort(int[] data, int start, int inc) { oX}n"5o:
int temp; R{[Q+y'E
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "T&uS1+=c
} uWWv`bI>x
} NdNfai
} %7d"()L
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} (t]>=p%4g
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快速排序: Q
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package org.rut.util.algorithm.support; vv0zUvmT
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import org.rut.util.algorithm.SortUtil; 1}BNG ,n
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/** <dN=d3S
* @author treeroot iCK$ o_`?
* @since 2006-2-2 O5{XT]:
* @version 1.0 u.[JYZ
*/ ;Bb5KD
public class QuickSort implements SortUtil.Sort{ vUK>4^{J5
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/* (non-Javadoc) ,\M_q">npc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :7ngVc
*/ j?,*fp8
public void sort(int[] data) { w+37'vQ
quickSort(data,0,data.length-1); /K!,^Xn
} >Y+KL
private void quickSort(int[] data,int i,int j){ ^<VE5OM
int pivotIndex=(i+j)/2; -{*V)J_Co
file://swap Zd(d]M_x
SortUtil.swap(data,pivotIndex,j); BLH=:zb5
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); :b;1P@W<
if((k-i)>1) quickSort(data,i,k-1); oPy zk7{
if((j-k)>1) quickSort(data,k+1,j); 5)zB/Ta<
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} y|Y3,s
/** JYr7;n'!
* @param data 'r n;|K
* @param i zzQH@D1
* @param j (<C%5xk
* @return LQ@|M.$A
*/ 1:!rw,Jzl`
private int partition(int[] data, int l, int r,int pivot) { i 9tJHeSm
do{ >ij4z
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `7%eA9*.m
SortUtil.swap(data,l,r); =(X'c.%i
} (1,#=e+
while(l SortUtil.swap(data,l,r); pInWKj[y1
return l; HCIF9{o1j>
} p\_qHq\;j
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} |~uzQU7
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改进后的快速排序: "$IwQ
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package org.rut.util.algorithm.support; iB3+KR
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import org.rut.util.algorithm.SortUtil; :_\!t45
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/** kw^Dp[8X
* @author treeroot y]YS2^
* @since 2006-2-2 fd"~[z [
* @version 1.0 e3={$A h
*/ ms\/=96F
public class ImprovedQuickSort implements SortUtil.Sort { SxW}Z_8x
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private static int MAX_STACK_SIZE=4096; khN:+V|
private static int THRESHOLD=10; Pv-V7`{
/* (non-Javadoc) ua|Z`qUyq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h NOYFH
*/ YNJpQAuSn)
public void sort(int[] data) { %cr]ZR
int[] stack=new int[MAX_STACK_SIZE]; wz0$g4
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int top=-1; {8Jk=)(md
int pivot; 8@W/43K8-
int pivotIndex,l,r; 8X
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stack[++top]=0; WQLHjGehe
stack[++top]=data.length-1; u};]LX\E
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while(top>0){ `\|3
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int j=stack[top--]; F%_,]^ n[
int i=stack[top--];
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pivotIndex=(i+j)/2; itC *Z6^
pivot=data[pivotIndex]; W#Hv~1
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SortUtil.swap(data,pivotIndex,j); $XQ;~i
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file://partition lq\'
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r=j; Dmm r]~
do{ ,+NE: _
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tgvpf/cQ
SortUtil.swap(data,l,r); bco[L@6G$
} y800(z
while(l SortUtil.swap(data,l,r); nT@6g|!
SortUtil.swap(data,l,j); =8$0$d
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if((l-i)>THRESHOLD){ V^Mf4!A(y
stack[++top]=i; wKi}@|0[@
stack[++top]=l-1; }KD7 Y
} 4l%?mvA^m
if((j-l)>THRESHOLD){ v`_i1h9p{
stack[++top]=l+1; Pi"~/MGP$
stack[++top]=j; iFwyh`Bcg
} YM`:L
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} 38*'8=Y#>
file://new InsertSort().sort(data); p'Y&Z?8
insertSort(data); '?`@7Eol
} u1pc5 Y{
/** \=EY@*=
* @param data @tE&<[e
*/ Rg8m4x w
private void insertSort(int[] data) { s}[A4`EWH
int temp; ;o_V!<$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 43{_Y]
} PQU3s$
} n{.*El>{
} W?"2;](
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} S6Xb*6
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归并排序: ~}7$uW0ol
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package org.rut.util.algorithm.support; r sX$fU8
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import org.rut.util.algorithm.SortUtil; oeu|/\+HW
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/** P|e:+G 7
* @author treeroot LXh@o1
* @since 2006-2-2 KJ0xp hf
* @version 1.0 |5}rX!wS4
*/ ~),;QQ,
public class MergeSort implements SortUtil.Sort{ r
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/* (non-Javadoc) 08Pt(kzNA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -~vl+L
*/ RjR&D?dc
public void sort(int[] data) { C@TN5?Z
int[] temp=new int[data.length]; {[M0y*^64$
mergeSort(data,temp,0,data.length-1); [)Z'N/;0
} '!j #X_;
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private void mergeSort(int[] data,int[] temp,int l,int r){ `2B*CMW{
int mid=(l+r)/2; p4m^ ~e
if(l==r) return ; 1a($8>
mergeSort(data,temp,l,mid); DEUd[
mergeSort(data,temp,mid+1,r); `G=ztL!gq
for(int i=l;i<=r;i++){ H4PbO/{xO
temp=data; toS(UM n
} ;Pol#0_(
int i1=l; E3~,+68U
int i2=mid+1; N_u&3CG
for(int cur=l;cur<=r;cur++){ Kcscz,
if(i1==mid+1) %sO Wg.0_
data[cur]=temp[i2++]; zuC 58B
else if(i2>r) <ICZ"F`S
data[cur]=temp[i1++]; 1A7 %0/K-]
else if(temp[i1] data[cur]=temp[i1++]; lv<iJH\
else .-SDo"K.h
data[cur]=temp[i2++]; g
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} D~G5]M,}$
} F[>7z3I
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} :r1;}hIA9
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改进后的归并排序: V,>+G6e
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package org.rut.util.algorithm.support; 0K=Qf69Y
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import org.rut.util.algorithm.SortUtil; 0Y2\n-`z
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/** XIr{U5$<6
* @author treeroot 2Pbe~[
* @since 2006-2-2 Q)x?B]b-
* @version 1.0 w{k1Y+1
*/ 1a7!4)\
public class ImprovedMergeSort implements SortUtil.Sort { e$CePLEj
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private static final int THRESHOLD = 10; lhLnyg Uk
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/* <lC]>L
* (non-Javadoc) V~/.Y&WN
* H7{Q@D8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %xf)m[JU=
*/ IZv~[vi_
public void sort(int[] data) { 8|1`Tn}o
int[] temp=new int[data.length]; 6BDt.bG
mergeSort(data,temp,0,data.length-1); +68+PhHF
} 2{Wo-B,wt~
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private void mergeSort(int[] data, int[] temp, int l, int r) { Sa%zre@
int i, j, k; kP)YgkE
int mid = (l + r) / 2; FhWmO
if (l == r) @@'nit
return; uWUR3n
if ((mid - l) >= THRESHOLD) 3LKB;
mergeSort(data, temp, l, mid); CD^CUbGk
else c]6V"Bo}A
insertSort(data, l, mid - l + 1); %4j&H!y-w;
if ((r - mid) > THRESHOLD) ;knd7SC
mergeSort(data, temp, mid + 1, r); |J:$MX~
else ./#e1m?.
insertSort(data, mid + 1, r - mid); 'dkXYtKCB
#2h+dk$1
for (i = l; i <= mid; i++) { Ds{{J5Um%
temp = data; i\(\MzW*'
} M(qxq(#{U
for (j = 1; j <= r - mid; j++) { PKi_Zh.D
temp[r - j + 1] = data[j + mid]; GtF2@\
} Z`rK\Bc
int a = temp[l]; >4,{6<|
int b = temp[r]; %PzQ\c
for (i = l, j = r, k = l; k <= r; k++) { 'nMApPl
if (a < b) { A^pu
data[k] = temp[i++]; 1<`9HCm
a = temp; w|=gSC-o
} else { N6h1|_o
data[k] = temp[j--]; 6MuWlCKF8
b = temp[j]; (YIhTSL"]
} Z)/6??/R
} Kaf>
} `8,w[o oC2
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/** fCB:733H
* @param data "ml?7Xl,n
* @param l Yj)
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* @param i Xq|nJ|h
*/ WM/#.
private void insertSort(int[] data, int start, int len) { Mec{_jiH&D
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8 4z6zFv?Q
} 2
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} -&im