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。 @MM|.#
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插入排序: (|x-> a
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package org.rut.util.algorithm.support; 1.!(#I3
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import org.rut.util.algorithm.SortUtil; \!PC:+uJ
/** fZZ!kea[
* @author treeroot E'ZWSpP
* @since 2006-2-2 ~ce.&C7cR
* @version 1.0 p|((r?{
*/ LOA
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public class InsertSort implements SortUtil.Sort{ gO5;hd[l
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/* (non-Javadoc) J kA~Ol
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +bSv-i -
*/ n33SWE(
public void sort(int[] data) { 'G^=>=w|Nv
int temp; H)p{T@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V>nY?
} %~h'#S2X(
} I;7{b\t
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} IP >An8+
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冒泡排序: gR6:J
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package org.rut.util.algorithm.support; Nwc(<
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import org.rut.util.algorithm.SortUtil; M *}$$Fe|
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/** 1#@'U90xf
* @author treeroot }QI*Ns
* @since 2006-2-2 `A'*x]l
* @version 1.0 X#o:-FKf
*/ &K4o8Qz
public class BubbleSort implements SortUtil.Sort{ A=])pYE1
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/* (non-Javadoc) QdRMp
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JDP#tA3
*/ JWBWa-
public void sort(int[] data) { D|S)/o6
int temp; 6R<%.-qr
for(int i=0;i for(int j=data.length-1;j>i;j--){ A+p}oY '
if(data[j] SortUtil.swap(data,j,j-1); P8EGd}2{8
} mZ5UaSG
} rS
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} qEpBzQ&gX6
} )uaB^L1
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} ZibODs=f;
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选择排序: Vlf@T
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; L{=z}QO
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/** N >z8\y
* @author treeroot / [19ITZ
* @since 2006-2-2 #B?7{#.1
* @version 1.0 ,P:.'
*/ 4>|5B:
public class SelectionSort implements SortUtil.Sort { 4[#.N
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/* Qw^tzP8
* (non-Javadoc)
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* k.0C*3'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (u_sz
*/ )CB?gW
public void sort(int[] data) { u-W=~EO5#
int temp; Ns $PS\
for (int i = 0; i < data.length; i++) { &>/nYvuq -
int lowIndex = i; UWnH2
for (int j = data.length - 1; j > i; j--) { &A9+%kOk>
if (data[j] < data[lowIndex]) { <Du*Re6g
lowIndex = j; VMHY.Rf
} 94R+S-|P
} $DVy$)a!u
SortUtil.swap(data,i,lowIndex); D9Z5g3s7R
} _&M>f? l
} `+6HHtF
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} wVvU]UT
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Shell排序: WS(c0c
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package org.rut.util.algorithm.support; h;lnc|Hw
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import org.rut.util.algorithm.SortUtil; e`oc#Od&x]
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/** `7j,njCX.
* @author treeroot gu/Yc`S[
* @since 2006-2-2 aJF`rLm
* @version 1.0 |WX4L7yrhK
*/ ob;oxJ@[c
public class ShellSort implements SortUtil.Sort{ %(]rc%ry0
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/* (non-Javadoc) N3?d?+A$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vfm-K;,#
*/ #7>CLjI
public void sort(int[] data) { bcYz?o6
for(int i=data.length/2;i>2;i/=2){ 3)ip@29F
for(int j=0;j insertSort(data,j,i); |j+~Td3})&
} ieI-_]|[
} H~@h
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insertSort(data,0,1); WIghP5% W
} NWvxbv
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/** W1s|7
* @param data 'UyL%h;nJ
* @param j n*1UNQp@]O
* @param i 4D13K.h`O
*/ Px8E~X<@
private void insertSort(int[] data, int start, int inc) { BCbW;w8aI
int temp; /[s$A?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u"%fz8v
} )\(pDn$W
} G$j8I~E@
} *G^]j
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} \
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快速排序: yV. P.Q
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package org.rut.util.algorithm.support; 5"Yw$DB9
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import org.rut.util.algorithm.SortUtil; l.BNe)1!22
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/** [=Z{y8#:J
* @author treeroot .>YJ95&\
* @since 2006-2-2 J3]m*i5A
* @version 1.0 4Y!v$r
*/ ;w>B}v;RE
public class QuickSort implements SortUtil.Sort{ <wC1+/]
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/* (non-Javadoc) KkY22_{ac
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eBB
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*/ mm 8O
public void sort(int[] data) { { SfU!
quickSort(data,0,data.length-1); `g=~u{0
} Oc.>$
private void quickSort(int[] data,int i,int j){ !xI![N^
int pivotIndex=(i+j)/2; =Vs<DO{|4q
file://swap 9E^piLA
SortUtil.swap(data,pivotIndex,j); Ba6xkEd
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int k=partition(data,i-1,j,data[j]); 2?j1~ ]DvZ
SortUtil.swap(data,k,j); ,3j7Y5v
if((k-i)>1) quickSort(data,i,k-1); BP6Shc|C
if((j-k)>1) quickSort(data,k+1,j); wOOPWwk
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} \K6J{;# L
/** p!ErH]lH
* @param data 9:>K!@
* @param i s,Swlo7D!
* @param j c'2ra/?k
* @return @jHio\/_
*/ (R-Q9F+;
private int partition(int[] data, int l, int r,int pivot) { ~'3% Qr
do{ je-s%kNlJ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TTpF m~?(
SortUtil.swap(data,l,r); ZTZE_[
} bRp[N
while(l SortUtil.swap(data,l,r); WQx;tX
return l; KfNXX>'
} %u}sVRJ
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} BE~[%6T7
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改进后的快速排序: ;[9Is\
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package org.rut.util.algorithm.support; 7Cf(y'w^
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import org.rut.util.algorithm.SortUtil; AHGcWS\,X
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/** 8H?AL
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* @author treeroot B5G$o{WM
* @since 2006-2-2 }^7V^W
* @version 1.0 /3]|B%W9
*/ 3)Y:c2
public class ImprovedQuickSort implements SortUtil.Sort { <.ky1aex7
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private static int MAX_STACK_SIZE=4096; Fev3CV$
private static int THRESHOLD=10; T#7^6Ks+1
/* (non-Javadoc) Ks(U]G"V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U5"Oh I
*/ yxbTcZ
public void sort(int[] data) { ?W_U{=anl
int[] stack=new int[MAX_STACK_SIZE]; @g~sgE}#
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int top=-1; `'WLGQG
int pivot; Kf#!IY][
int pivotIndex,l,r; 5eA]7$ic
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stack[++top]=0; wjOAgOC
stack[++top]=data.length-1; S!_?# ^t
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while(top>0){ 7`HUwu
int j=stack[top--]; /&7Yi_]r
int i=stack[top--]; #LJ-IDuF!
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pivotIndex=(i+j)/2; W?-BT >#s
pivot=data[pivotIndex]; "M^W:4_
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SortUtil.swap(data,pivotIndex,j); uszSFe]E
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file://partition }3w b*,Sbz
l=i-1; ~b0qrjF;O
r=j; i&)C,
do{ 2]=I'U<E!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @~3c"q;i7
SortUtil.swap(data,l,r); dRm'$
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} j*d~h$[k
while(l SortUtil.swap(data,l,r); ^~ $&
SortUtil.swap(data,l,j); -FV'%X$i
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if((l-i)>THRESHOLD){ rJp6d :M
stack[++top]=i; ]bb}[#AY
stack[++top]=l-1; C}_:K)5q
} Y{RB\}f(
if((j-l)>THRESHOLD){ MXk. 2
stack[++top]=l+1; W+e*(W|d6
stack[++top]=j; TZNgtR{q
} N'P,QiR,z<
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} [nIG_j>D-f
file://new InsertSort().sort(data); 389.&`Q%Ut
insertSort(data); a] =\h'S
} L]N2rMM
/** 92VX5?Cyg
* @param data +|)1_NK
*/ @n*D>g
private void insertSort(int[] data) { k=2l9C3Z
int temp; Cf[F`pFM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jDXGm[U
} ?3,tG z)
} OB^?cA>
} 5dw@g4N %^
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} D*'M^k|1
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归并排序: Juqn
X
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package org.rut.util.algorithm.support; }, &,Dt
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import org.rut.util.algorithm.SortUtil; Ej09RO"pB
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/** #aY<J:Nx
* @author treeroot 1[g!^5W
* @since 2006-2-2 Fi%W\Y'
* @version 1.0 ~Z6p3#
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*/ ANQa2swM
public class MergeSort implements SortUtil.Sort{ )-KE 4/G
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/* (non-Javadoc) tO>OD#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H9Q7({v
*/ uf'P9MA}>
public void sort(int[] data) { 8pMZ~W;
int[] temp=new int[data.length]; `W$0T;MPF
mergeSort(data,temp,0,data.length-1); ?En|
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} &Z;8J @
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private void mergeSort(int[] data,int[] temp,int l,int r){ Po11EZa$a
int mid=(l+r)/2; -s%-*K+,W
if(l==r) return ; GL =XiBt
mergeSort(data,temp,l,mid); s8Ry}{
mergeSort(data,temp,mid+1,r); V/9"Xmv75
for(int i=l;i<=r;i++){ ro^6:w3O^
temp=data; "Xk%3\{P
} +M
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int i1=l; J*~2:{=%
int i2=mid+1; gq_7_Y/
for(int cur=l;cur<=r;cur++){ j /dE6d
if(i1==mid+1)
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data[cur]=temp[i2++]; ?Ga2K
else if(i2>r) #C;zS9(]B
data[cur]=temp[i1++]; ]n]uN~)9
else if(temp[i1] data[cur]=temp[i1++]; dFP-(dX#
else |k
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data[cur]=temp[i2++]; @W\4UX3dK
} ddq 1NW
} 1;:t~Y
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} gLSG:7m@
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改进后的归并排序: ?I2k6%a
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package org.rut.util.algorithm.support; Fr3d#kVR
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import org.rut.util.algorithm.SortUtil; CziaxJ
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/** g[wP!y%V
* @author treeroot *JY`.t
* @since 2006-2-2 O})u'
* @version 1.0 J={OOj
*/ H")N_BB
public class ImprovedMergeSort implements SortUtil.Sort { /=YqjZTCq
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private static final int THRESHOLD = 10; g\\1C2jG
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/* 3Da,]w<
* (non-Javadoc) s 9|a2/{
* @Tfwh/UN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |
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*/ j`|^s}8t
public void sort(int[] data) { Ld}(*-1i
int[] temp=new int[data.length]; cbu nq"
mergeSort(data,temp,0,data.length-1); NM1cyZ
} C*EhexK,}
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private void mergeSort(int[] data, int[] temp, int l, int r) { ;Up'~BP(
int i, j, k; or%gTVZ
int mid = (l + r) / 2; >1a\%G
if (l == r) @W1WReK]f
return; tFvgvx\:
if ((mid - l) >= THRESHOLD) }}``~
mergeSort(data, temp, l, mid); _/jUs_W
else Ku0H?qft(
insertSort(data, l, mid - l + 1); .kbr?N,'
if ((r - mid) > THRESHOLD) 0/SC
mergeSort(data, temp, mid + 1, r); L*
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else qJX+[PJ
insertSort(data, mid + 1, r - mid); B3cf] S%
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for (i = l; i <= mid; i++) { GcZM+ c
temp = data; l~fh_IV1
} *dG}R#9Nv
for (j = 1; j <= r - mid; j++) { FYXw$7'l
temp[r - j + 1] = data[j + mid]; T\2) $
} +24|_Lx0
int a = temp[l]; 3b|7[7}&
int b = temp[r]; o%Uu.P
for (i = l, j = r, k = l; k <= r; k++) { >
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if (a < b) { N
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data[k] = temp[i++]; O>SuZ>g+7
a = temp; 4V228>9w
} else { =GH@.3`X
data[k] = temp[j--]; H]tSb//qc
b = temp[j]; N#RD:"RS!
} 462!;/y
} 192 .W+H<
} =`]|/<=9'U
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/** to!mz\F
* @param data e0v9uQ%F5
* @param l dysX
* @param i DOF?(:8Y
*/ %z-dM` i
private void insertSort(int[] data, int start, int len) { f[JI/H>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6K4`;
} MtZt8s
} i!SW?\
} IOsXPf9@
} uQ:ut(
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堆排序: vx\nr8'k
y3={NB+
package org.rut.util.algorithm.support; `d}W;&c
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import org.rut.util.algorithm.SortUtil; ^i{,z*vi
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/** 0NL :z1N-h
* @author treeroot >vD['XN,
* @since 2006-2-2 E6'8Zb
* @version 1.0 3AdP^B<
*/ TnN^2:cU
public class HeapSort implements SortUtil.Sort{ E1c>nrnh*
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/* (non-Javadoc) [<D+pqh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $:f.Krj
*/ tk`: CT
*
public void sort(int[] data) { K,x$c %
MaxHeap h=new MaxHeap(); tr}KPdE
h.init(data); K[Yc<Q
for(int i=0;i h.remove(); z3^RUoGU
System.arraycopy(h.queue,1,data,0,data.length); 7XUhJN3n
} VFilF<