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。 KHvYUTY
插入排序: }i&/G+_
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package org.rut.util.algorithm.support; &mS^ZyG
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import org.rut.util.algorithm.SortUtil; a/xn'"eli
/** Tpa5N'O
* @author treeroot @-`*m+$U6
* @since 2006-2-2 3F^Q51:t
* @version 1.0 SNk=b6`9
*/ ysnx3(+|
public class InsertSort implements SortUtil.Sort{ U-k`s[dv
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/* (non-Javadoc) 'i|YlMFI g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <t!W5q
*/ nKj7.,>;:<
public void sort(int[] data) { Q^^niVz
int temp; tw)mepwB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^E>3|du]O
} ~WF\
} 7D_=
} Xne1gms
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} BDQsP$'6QT
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冒泡排序: +D*Z_Yh6
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package org.rut.util.algorithm.support; o}p n0KO,
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import org.rut.util.algorithm.SortUtil; .O<obq~;C
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/** zX i'kB
* @author treeroot p0eX{xm
* @since 2006-2-2 !C.4<?*|
* @version 1.0 sU^1wB
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*/ Pr
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public class BubbleSort implements SortUtil.Sort{ a(ZcmYzXU
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/* (non-Javadoc) =:U`k0rn!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +:/%3}`
*/ :7;@ZEe
public void sort(int[] data) { as=fCuJ
int temp; %^6F_F_jS
for(int i=0;i for(int j=data.length-1;j>i;j--){ {?7Uj
if(data[j] SortUtil.swap(data,j,j-1); w_V P
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} NDokSw-
} 9%obq/Lb
} YtLt*Ig%
} Q\0'lQJdy
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} */S_Icf
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选择排序: NvX[zqNP_R
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package org.rut.util.algorithm.support; )D%~`,#pQ
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import org.rut.util.algorithm.SortUtil; ~pky@O#b
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/** l9"s>P U
* @author treeroot F,CTZ~
* @since 2006-2-2 %J-GKpo/S
* @version 1.0 >y+B
*/ f*
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public class SelectionSort implements SortUtil.Sort { fI|$K)K
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/* 4?01s-Y
* (non-Javadoc) L-&\\{X
* _,*r_D61S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KqP#6^ _
*/ G^@5H/)
public void sort(int[] data) { 9:lFo=
int temp; -trkA'ewZ
for (int i = 0; i < data.length; i++) { F((4U"
int lowIndex = i; 0<*<$U
for (int j = data.length - 1; j > i; j--) { Vi|#@tC'
if (data[j] < data[lowIndex]) { ?Z} &EH
lowIndex = j; tpx2IE
} HjwE+: w
} b7ZSPXV
SortUtil.swap(data,i,lowIndex); NwfVL4Xg
} tO&^>&;5
} N6TH}~62}
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} |5 ]X| v
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Shell排序: f%8C!W]Dm
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package org.rut.util.algorithm.support; zKK9r~ M
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import org.rut.util.algorithm.SortUtil; D)}v@je"yP
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/** V]?R>qhgu
* @author treeroot l}P=/#</T
* @since 2006-2-2 |1Z)E+q*:
* @version 1.0 9jGu}Vo
*/ -F3-{E
public class ShellSort implements SortUtil.Sort{ EiaW1Cs
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/* (non-Javadoc) dgP3@`YS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #p{4^
*/ uEx-]F
public void sort(int[] data) { YchH~m|
for(int i=data.length/2;i>2;i/=2){ #rg6,.I)<
for(int j=0;j insertSort(data,j,i); {\\Tgs
} U%/+B]6jP
} '0,^6'VWOV
insertSort(data,0,1); 2+WaA,
} H6gSO(U
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/** IvNT6]6 P
* @param data iJ|uvPCE
* @param j K|s,ru
* @param i Y\hBd$lQ~
*/ 6E}qL8'5x
private void insertSort(int[] data, int start, int inc) { L\iFNT}g`
int temp; V G~Vs@c(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KG{St{uJ
} @KUWxFak
} /<BI46B\
} *n"{J(Jt`
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} o<!?7g{
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快速排序: |+"(L#wk
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package org.rut.util.algorithm.support; %xt^698&X
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import org.rut.util.algorithm.SortUtil; Xlt|nX~#;
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/** tZB<on<.)
* @author treeroot (uidNq
* @since 2006-2-2 )=-szJjXZ
* @version 1.0 q" 5(H5
*/ "J3x_~,[4m
public class QuickSort implements SortUtil.Sort{ ,v}k{( 16{
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/* (non-Javadoc) ijU*|8n{>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ??/
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*/ L{Vqh0QD&
public void sort(int[] data) { -35;j'a
quickSort(data,0,data.length-1); SZCze"`[
} (C)p9-,
private void quickSort(int[] data,int i,int j){ |sZHUf_
int pivotIndex=(i+j)/2; f|oh.z_R
file://swap f`66h M[
SortUtil.swap(data,pivotIndex,j); )BfAw
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int k=partition(data,i-1,j,data[j]); p{dj~ &v
SortUtil.swap(data,k,j); /z $u]X
if((k-i)>1) quickSort(data,i,k-1); ,"79P/C
if((j-k)>1) quickSort(data,k+1,j); l}M!8:UzU
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} Srd4))2/0
/** is@?VklnB
* @param data 5Jnlz@P9
* @param i E&:,oG2M
* @param j <ZR9GlIr
* @return \z}
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*/ w@fi{H(R
private int partition(int[] data, int l, int r,int pivot) { %e} Saf
do{ LjHVJSC
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vY`s'%WV
SortUtil.swap(data,l,r); Ny)X+2Ae
} C+&l<
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while(l SortUtil.swap(data,l,r); DLNbo2C
return l; /;
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} IV)j1
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} n'6jou
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改进后的快速排序: 7"D.L-H
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package org.rut.util.algorithm.support; C$)onk
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import org.rut.util.algorithm.SortUtil; x'R`.
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/** \xoP)Ub>
* @author treeroot 0#^v{DC
* @since 2006-2-2 ^pk7"l4Xm
* @version 1.0 <p"iY}x[H
*/ z*)T%p
public class ImprovedQuickSort implements SortUtil.Sort { "g8M0[7e3
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private static int MAX_STACK_SIZE=4096; sCHJ&>m5-
private static int THRESHOLD=10; "C`Ub
/* (non-Javadoc) [}]Q?*_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S>1Iky|
*/ -A!%*9Z
public void sort(int[] data) { 7Hu3>4<
int[] stack=new int[MAX_STACK_SIZE]; P7/X|M z
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int top=-1; W
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int pivot; E-g_".agO
int pivotIndex,l,r; `*KHSA
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stack[++top]=0; v|2T%y_
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stack[++top]=data.length-1; N ZSSg2TX#
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while(top>0){ .kfIi^z
int j=stack[top--]; &@YmA1Yu)E
int i=stack[top--];
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pivotIndex=(i+j)/2; '2^Q1{ :\
pivot=data[pivotIndex]; 6)Lk-D
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SortUtil.swap(data,pivotIndex,j); i~J'% a<Qp
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file://partition 6!FQzFCZq
l=i-1; VP]% Hni]
r=j; B^9j@3Ux
do{ czd~8WgOa
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Th%Sjgsn
SortUtil.swap(data,l,r); y'*K|aTG
} |Xy6PN8
while(l SortUtil.swap(data,l,r); 4{`{WI{
SortUtil.swap(data,l,j); U/NoP4~{
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if((l-i)>THRESHOLD){ }vM("v|M
stack[++top]=i; R~$qo)v
stack[++top]=l-1; V~5jfcd
} aw42oLk
if((j-l)>THRESHOLD){ }`~+]9<
stack[++top]=l+1; ^J;bso`
stack[++top]=j; BThrO d
} ?5
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} <UQbt N-B\
file://new InsertSort().sort(data); '."ed%=MC
insertSort(data); 3$9W%3
} HA>OkA/
/** n7-6-
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* @param data <e</m)j
*/ B`J~^+`[*
private void insertSort(int[] data) { {{p7 3
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int temp; X}\:_/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3/n5#&c\4
} Jz e:[MYS
} dlTt_.
} ) hfpwdQ
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} <W $mj04@
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归并排序: `+Q%oj#FF
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package org.rut.util.algorithm.support; Q$@I"V&G.
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import org.rut.util.algorithm.SortUtil; YcpoL@ab
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/** ^ (zYzd
* @author treeroot W9GVt$T7
* @since 2006-2-2 %d<"l~<5;
* @version 1.0 7O-x<P;
*/ _zi|
public class MergeSort implements SortUtil.Sort{ WEi2=3dV
SNI)9k(T{
/* (non-Javadoc) Hja3a{LH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nc|p )
*/ G*P#]eO
public void sort(int[] data) { ^3L0w}#
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); |_@>*Vmg
} IB]l1<
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private void mergeSort(int[] data,int[] temp,int l,int r){ VS8Rx.?
int mid=(l+r)/2;
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if(l==r) return ; +!.^zp21
mergeSort(data,temp,l,mid); F@B]et7
mergeSort(data,temp,mid+1,r); ?+}_1x`
for(int i=l;i<=r;i++){ 'AS|ZRr/
temp=data; b2&0Hx
} vnZC,J `
int i1=l; U|Ta4W`k\
int i2=mid+1; [:SWi1cK2
for(int cur=l;cur<=r;cur++){ <l E<f+
if(i1==mid+1) ]|PiF+
data[cur]=temp[i2++]; _^%,x
else if(i2>r) n]o<S+z
data[cur]=temp[i1++]; vT,AMja
else if(temp[i1] data[cur]=temp[i1++]; q6V>zi
else QX'qyojxN
data[cur]=temp[i2++]; vuY~_
} 5uj?#)N
} CN8Y\<Ar
H%Q7D-
} ;u46Z
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改进后的归并排序: JO6)-U$7UG
|imM#wF
package org.rut.util.algorithm.support; hy"\RW
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import org.rut.util.algorithm.SortUtil; ?QdWrE_
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/**
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* @author treeroot [~c|mOk
* @since 2006-2-2 a'yK~;+_9
* @version 1.0 SbrecZ
*/ )W
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public class ImprovedMergeSort implements SortUtil.Sort { 3K0A)W/YEs
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private static final int THRESHOLD = 10; dn$!&
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/* PmEsN&YP]
* (non-Javadoc) 3kp+<$
* 6)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XrGglBIV
*/ V#gK$uv
public void sort(int[] data) { gu.}M:u
int[] temp=new int[data.length]; eiaFaYe\
mergeSort(data,temp,0,data.length-1); XW)lDiJl
} o~y;j75{.*
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private void mergeSort(int[] data, int[] temp, int l, int r) { C{xaENp
int i, j, k; ^EQ<SCh
int mid = (l + r) / 2; F8,RXlGfA[
if (l == r) ,G?WAOy,
return; h_,i&d@(
if ((mid - l) >= THRESHOLD) j@3Q;F0ba
mergeSort(data, temp, l, mid); q\4Xs$APq
else 9W1YW9rL
insertSort(data, l, mid - l + 1); LG|fq/;
if ((r - mid) > THRESHOLD) czgO ;3-C
mergeSort(data, temp, mid + 1, r); "
9wvPC ^
else yEoF4bt
insertSort(data, mid + 1, r - mid); Ww+IWW@
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for (i = l; i <= mid; i++) { bUdLs.:
temp = data; Q1I6$8:7
} x}I+Iggi
for (j = 1; j <= r - mid; j++) { J$w<$5UY
temp[r - j + 1] = data[j + mid]; C]`$AqKl
} qvKG-|j
int a = temp[l]; aa/(N7
int b = temp[r]; WUXx;9 >
for (i = l, j = r, k = l; k <= r; k++) { o&)8o5
if (a < b) { ?(F6#"/E
data[k] = temp[i++]; ,pQZ@I\z
a = temp; dhf!o0'1M
} else { u5b|#&-mX
data[k] = temp[j--]; Ma']?Rb`
b = temp[j]; S3*`jF>q
} h-K_Lr]
} vm7z,FfN
} lc1(t:"[
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/** 4=.89T#<
* @param data m{cGK`/\
* @param l &P}_bx
* @param i G+"t/?/
*/ /1V xc 6
private void insertSort(int[] data, int start, int len) { )9'K($
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7<#U(,YEA
} ;oKZ!ND
} 6"5A%{J
} p\tm:QWD;
} qHplJ "
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堆排序: Ls$D$/:q?
N06OvU2>xU
package org.rut.util.algorithm.support; %G/hD
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import org.rut.util.algorithm.SortUtil; (pCrmyB
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/** < #}5IQ5`Z
* @author treeroot ~IfJwBn-i
* @since 2006-2-2 z2_*%S@
* @version 1.0 .B]MpmpK
*/ IS{wtuA.
public class HeapSort implements SortUtil.Sort{ i$:*Pb3mV
Xq]w<$
/* (non-Javadoc) FaQe_;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b_#m}yZ6
*/ gmO!
public void sort(int[] data) { 9`A;U|~E@
MaxHeap h=new MaxHeap(); Hz1%x
h.init(data); t?x<g <PJ4
for(int i=0;i h.remove(); rq/yD,I,
System.arraycopy(h.queue,1,data,0,data.length); r6MMCJ|G
} ;4^Rx
fF$<7O)+]
private static class MaxHeap{ L_uVL#To
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void init(int[] data){ rb2S7k0{
this.queue=new int[data.length+1]; o WrKM
for(int i=0;i queue[++size]=data; 'EEJU/"u
fixUp(size); D9CaFu
} J6s`'gFns
} qo90t{|c
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private int size=0; nQX:T;WL@
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private int[] queue; hk(ZM#Bh
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public int get() { [#<-ZC#T*
return queue[1]; @fZ,.2ar
} |mdVdD~go
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public void remove() { 3s,g*
SortUtil.swap(queue,1,size--); 7a=gH2]&
fixDown(1); */)c?)"
} DnMwUykF>0
file://fixdown av}k)ZT_
private void fixDown(int k) { <
Mn ;
int j; SO|NaqWa
while ((j = k << 1) <= size) { QuF:p
if (j < size %26amp;%26amp; queue[j] j++; hLd^ agX
if (queue[k]>queue[j]) file://不用交换 TluW-S
break; zU kgG61
SortUtil.swap(queue,j,k); dUeN*Nq&(,
k = j; BOb">6C
} JgKO|VO
} @w#-aGJO
private void fixUp(int k) { q1$N>;&
while (k > 1) { p*R;hU
int j = k >> 1; }{K)
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if (queue[j]>queue[k]) W7R<