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。 kx^/*~ex
插入排序: 5h*p\cl!Y
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package org.rut.util.algorithm.support; wd6owr
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import org.rut.util.algorithm.SortUtil; ?JUeuNs9
/** \M-OC5fQv
* @author treeroot jEwIn1
* @since 2006-2-2 khd4ue$
* @version 1.0 xSu >
*/ Bbc^FHip
public class InsertSort implements SortUtil.Sort{ 5r0YA
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/* (non-Javadoc) uAk.@nfiEv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?7A>+EY
*/ a q-~B~c`g
public void sort(int[] data) { *1"+%Z^
int temp; =~gvZV-<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a'T;x`b8U,
} Y:`&=wjP~
} XPPdwTOr
} VU#7%ufu&
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} EM_d8o)`B
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冒泡排序: d zMb5puH
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package org.rut.util.algorithm.support; Q{/Ef[(a@
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import org.rut.util.algorithm.SortUtil; Ort(AfW
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/** 76SXJ9@x
* @author treeroot JGZBL{8
* @since 2006-2-2 @6]JIJE
* @version 1.0 4Tc~b3\!Y
*/ D+c>F5
public class BubbleSort implements SortUtil.Sort{ 9M ]_nP Y
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/* (non-Javadoc) >GuM]qn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O&&~NXI\
*/ HKe K<V
public void sort(int[] data) { ^?|"L>y
int temp; bMBLXk
for(int i=0;i for(int j=data.length-1;j>i;j--){ eH,or ,r
if(data[j] SortUtil.swap(data,j,j-1); &j6erwaT
} {G-kNU
} sq]F;=[5
} <naz+QK'
} 0`H#
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} )}vl\7=
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选择排序: HT@=evV
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package org.rut.util.algorithm.support; P2Y^d#jO
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import org.rut.util.algorithm.SortUtil; .C(tMF]D,
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/** ]^]wP]R_
* @author treeroot Mihg:
* @since 2006-2-2 # "an9<
* @version 1.0 p[cX O=
*/ +[P{&\d4}
public class SelectionSort implements SortUtil.Sort { %)wjR/o
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/* <GsuZ
* (non-Javadoc) r*Xuj=
* SX*RP;vHy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OJxl<Q=z
*/ z)"=:o7
public void sort(int[] data) { =lC7gS!U
int temp; 'PHl$f*k
for (int i = 0; i < data.length; i++) { E.f%H(b
int lowIndex = i; oU/5 a>9~
for (int j = data.length - 1; j > i; j--) { ;Xw~D_uv
if (data[j] < data[lowIndex]) { s @C}P
lowIndex = j; %3rP`A
} qWw=8Bq
} Q.[0ct
SortUtil.swap(data,i,lowIndex); A=4OWV?
} ;PH~<T
} 0aAoV0fMDz
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} Xeajxcop#
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Shell排序: u4j5w
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package org.rut.util.algorithm.support; Y0>y8UV
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import org.rut.util.algorithm.SortUtil; "]dI1 g_
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/** :%.D78&
* @author treeroot O84i;S+-p
* @since 2006-2-2 m2o0y++TjW
* @version 1.0 PM+[,H
*/ ys~x$
public class ShellSort implements SortUtil.Sort{ wbHb;]
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/* (non-Javadoc) :>*7=q=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) weQ_*<5%
*/ (?c-iKGc
public void sort(int[] data) { Fp:'M X
for(int i=data.length/2;i>2;i/=2){ N0lC0
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for(int j=0;j insertSort(data,j,i); :0ep(<|;
} [~^0gAlQC
} ;]iRk
insertSort(data,0,1); yZRzIb_
} WM{=CD
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/** :svqE+2
* @param data y^k$Us
* @param j =WLY 6)]A
* @param i ;,TFr}p`
*/ Si7*& dw=
private void insertSort(int[] data, int start, int inc) { %;/P&d/
int temp;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6mE\OS-I
} XkqCZHYkS
} :U\tv[
} !W\+#ez
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} ~dSr5LUD
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快速排序: j+!v}*I![
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package org.rut.util.algorithm.support; pw#-_
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import org.rut.util.algorithm.SortUtil; 4
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/** bLL2
* @author treeroot @d_M@\r=j
* @since 2006-2-2 Lr+$_ t}r
* @version 1.0 5xBbrU;
*/ . me;.,$#
public class QuickSort implements SortUtil.Sort{ [K Qi.u
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/* (non-Javadoc) jCY%|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uNyVf7u
*/ k'YTpO
public void sort(int[] data) { Ni>[D"|
quickSort(data,0,data.length-1); *Ly6`HZ9
} @CoIaUVP
private void quickSort(int[] data,int i,int j){ sT.ss$HY9,
int pivotIndex=(i+j)/2; DDZ@$L!
file://swap _g8yDfcLG
SortUtil.swap(data,pivotIndex,j); +t.b` U`-
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int k=partition(data,i-1,j,data[j]); )+^+sd
SortUtil.swap(data,k,j); VUc%4U{Cti
if((k-i)>1) quickSort(data,i,k-1); K"6vXv4QO
if((j-k)>1) quickSort(data,k+1,j); mv><HqDL1
s.rm7r@#
} Ef\-VKh
/** z}<^jgJ
* @param data #tHK"20
* @param i =I<R! ZSN
* @param j OI*H,Z"
* @return do_[&
*/ ks tIgcI
private int partition(int[] data, int l, int r,int pivot) { ]'cs.
do{ (Z*!#}z`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |pK!S
SortUtil.swap(data,l,r); mw!F{pw
} u,
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while(l SortUtil.swap(data,l,r); K'bP@y_cq
return l; }C:r9?T
} ]d]]'Hk
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}
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改进后的快速排序: oRFq@g
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package org.rut.util.algorithm.support; 9Na$W:P
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import org.rut.util.algorithm.SortUtil; ]lbuy7xj63
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/** 3Ul*QN{6
* @author treeroot ^ c<Ve'-
* @since 2006-2-2 %4H%?4
* @version 1.0 ,hVli/
*/ d~H`CrQE*
public class ImprovedQuickSort implements SortUtil.Sort { L#J1b!D&<6
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; Wc#24:OKe3
/* (non-Javadoc) 6'/ #+,d'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NOva'qk
*/ "[J^YKoF
public void sort(int[] data) { N['.BN
int[] stack=new int[MAX_STACK_SIZE]; fex@,I&
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int top=-1; Upe%rC(
int pivot; $mI Loy
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int pivotIndex,l,r; az$FnVNn=
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stack[++top]=0; X8|,
stack[++top]=data.length-1; aOp\91
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while(top>0){ l**X^+=$
int j=stack[top--]; se)TzI^]b@
int i=stack[top--]; F%|h;+5
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pivotIndex=(i+j)/2; ^!d3=}:0
pivot=data[pivotIndex]; /wp6KXm
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SortUtil.swap(data,pivotIndex,j); hb$Ce'}N
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file://partition R_C)
l=i-1; #"!<W0
r=j; dN q$}
do{ ;l+Leex
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L0,'mS
SortUtil.swap(data,l,r); ]M=&+c>H~
} *@5 @,=d
while(l SortUtil.swap(data,l,r); a(nlTMfu
SortUtil.swap(data,l,j); qX%_uOw:%
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if((l-i)>THRESHOLD){ %J(:ADu]
stack[++top]=i; 23PGq%R
stack[++top]=l-1; 9*gZ-#
} RZLq]8pM
if((j-l)>THRESHOLD){ $4LzcwG
stack[++top]=l+1; 1}x%%RD_
stack[++top]=j; !L(^(;$Kgr
} +7Gwg
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} y(#e}z:
file://new InsertSort().sort(data); [txE .7p
insertSort(data); /uflpV|
} @d'j zs
/** /uc>@!F
* @param data dO'(2J8
*/ D.:Zx
private void insertSort(int[] data) { 6K^#?Bn;
int temp; ch]IzdD
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); * 4'"2"
} 2y4bwi
} V3Bz
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} 6nn*]|7
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} %9"H
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归并排序: m67V_s,7B
vx
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package org.rut.util.algorithm.support; -"x$ZnHU
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import org.rut.util.algorithm.SortUtil; 6tZI["\
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/** NEs:},)o
* @author treeroot k$Vl fQ'+
* @since 2006-2-2 }>\C{ClI
* @version 1.0 *~`(RV
*/ Ry&6p>-
public class MergeSort implements SortUtil.Sort{ %#+Hl0,Tt
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/* (non-Javadoc) ?dTD\)%A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rv;3~'V
*/ BtZ yn7a
public void sort(int[] data) { 'u658Tj
int[] temp=new int[data.length]; crCJrN=
mergeSort(data,temp,0,data.length-1); z?zL9 7H
} XppOU
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private void mergeSort(int[] data,int[] temp,int l,int r){ %<5'=t'|-U
int mid=(l+r)/2; Gj*9~*xm(
if(l==r) return ; <@}9Bid!o
mergeSort(data,temp,l,mid); -j(6;9"7]|
mergeSort(data,temp,mid+1,r); nN;u,}e
for(int i=l;i<=r;i++){ pAEx#ck
temp=data; *hrd5na
} =Qq+4F)MD
int i1=l; ESs\O?nO
int i2=mid+1; g0H[*"hj
for(int cur=l;cur<=r;cur++){ 8L XHk l
if(i1==mid+1) $>gFf}#C
data[cur]=temp[i2++]; $'TM0Yu,
else if(i2>r) w!CNRtM:~
data[cur]=temp[i1++]; mOSv9w#,
else if(temp[i1] data[cur]=temp[i1++]; 3T
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else !k%#R4*>
data[cur]=temp[i2++]; )"LJ
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} ijcm2FJcG
} fM}#ON>Z
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} "b[5]Y{
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改进后的归并排序: e)ZUO_Q$
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package org.rut.util.algorithm.support; 'yth'[
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import org.rut.util.algorithm.SortUtil; >p/`;Kq@
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/** ,[Fb[#Qqb
* @author treeroot S'14hk<
* @since 2006-2-2 m*;ERK
* @version 1.0 "L1Zi.)
*/ p'fYULYE
public class ImprovedMergeSort implements SortUtil.Sort { HDKbF/
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private static final int THRESHOLD = 10; BHw, 4#F1;
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/* _U0f=m
* (non-Javadoc) eFAnFJ][L
* 6RM/GM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HThcn1u~^b
*/ nm+s{
public void sort(int[] data) { &{RDM~
int[] temp=new int[data.length]; Ah<+y\C
mergeSort(data,temp,0,data.length-1); l@\FWWQ
} \1`O_DF~o
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private void mergeSort(int[] data, int[] temp, int l, int r) { ':}\4j&{E
int i, j, k; $|@ r!/W
int mid = (l + r) / 2; DJ%PWlK5
if (l == r) B:QHwzd
return; i&k7-<
if ((mid - l) >= THRESHOLD) nd(S3rct&
mergeSort(data, temp, l, mid); ~4"dweu?
else m3ff;,
insertSort(data, l, mid - l + 1); bi:8(Q$w:`
if ((r - mid) > THRESHOLD) ~v83pu1!2s
mergeSort(data, temp, mid + 1, r); -F92 -jBM4
else _FEFx
insertSort(data, mid + 1, r - mid); rH>)oThA#
v}(WaO#S
for (i = l; i <= mid; i++) { >Se,;cB'/]
temp = data; Gc!x|V;T
} }-fl$j?9E
for (j = 1; j <= r - mid; j++) { I0a<%;JJW
temp[r - j + 1] = data[j + mid]; X?$_Sd"G+5
} QM]YJr3rE
int a = temp[l]; d %#b:(,
int b = temp[r]; y==CTY@
for (i = l, j = r, k = l; k <= r; k++) { fT{Yg /j
if (a < b) { !Uc T RI
data[k] = temp[i++]; pmilrZmm]
a = temp; 0;ji65
} else { ;6wA"
data[k] = temp[j--]; sC ;+F*0g
b = temp[j]; 0^ibNiSP
} 6&-(&(_
} Z)\@i=m
} R$Q.sE
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/** #,.Hr#3nI
* @param data ]fD}
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* @param l Faf&U%]*`
* @param i {GO#.P"
*/ rD>f|kA?L
private void insertSort(int[] data, int start, int len) { X$pJ
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $\! 7 {6a
} )/EO&F
} TU7'J
} `#gie$B{
} d M-%{
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堆排序: (khL-F
6DWgl$[[
package org.rut.util.algorithm.support; T n}s*<=V
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import org.rut.util.algorithm.SortUtil; ,{q;;b9
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/** PzR[KUK
* @author treeroot N&V`K0FU
* @since 2006-2-2 6i*sm.SDw
* @version 1.0 XGMiW0j0B
*/ D1mfm.9_r^
public class HeapSort implements SortUtil.Sort{ :Lug7bUVD
k: ;WtBC6j
/* (non-Javadoc) Y]5l.SV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yir
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*/ ^Va1f'g
public void sort(int[] data) { /^|Dbx!u
MaxHeap h=new MaxHeap(); |B2+{@R
h.init(data); .y,0[i V
N
for(int i=0;i h.remove(); IyPnp&_
System.arraycopy(h.queue,1,data,0,data.length); /[>sf[X\I9
} *r% c
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private static class MaxHeap{ m<g~H4
5Zva:
void init(int[] data){ f0aKlhEC
this.queue=new int[data.length+1]; C=4Qlt[`
for(int i=0;i queue[++size]=data; 4X(H;
fixUp(size); 19KQlMO.G
} (/*]?Ehd
} yEj^=pw
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private int size=0; aCLq k'
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private int[] queue; }XM(:|8J,
q=qcm`ce
public int get() { 9lDhIqx0~
return queue[1]; 5RpjN: 3
} {Fe[:\
y
{<9]'
public void remove() { [bNx^VP*
SortUtil.swap(queue,1,size--); M>8A\;"
fixDown(1); B i<Q=x'Z;
} "{Eta
file://fixdown x*&|0n.D
private void fixDown(int k) { 84 pFc;<
int j; ye? 'Ze
while ((j = k << 1) <= size) { g]yBA7/S"
if (j < size %26amp;%26amp; queue[j] j++; %O;bAC_M
if (queue[k]>queue[j]) file://不用交换 ;K&o-y
break; &&RimoIeo
SortUtil.swap(queue,j,k); /mu*-,aeX
k = j; pDCeQ6?
} 3az&