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。 mwo:+^v(
插入排序: #n'.a1R
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package org.rut.util.algorithm.support; qx'0(q2Ii(
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import org.rut.util.algorithm.SortUtil; >;^/B R=
/** (Kwqa"Hk4{
* @author treeroot ~g\~x
* @since 2006-2-2 rNR7}o~ qo
* @version 1.0 Rh ^(91d
*/ H.m]Dm,z
public class InsertSort implements SortUtil.Sort{ !JDr58
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/* (non-Javadoc) $uZmIu9Bi+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `R$i|,9)
*/ Vw1>d+<~-)
public void sort(int[] data) { }! EVf
int temp; dgjK\pH`h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Cjx4vP
} ;NR|Hi]
} A<ds+0
} uYMn VE"
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} >!t3~q1Cn
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冒泡排序: u<Kowt<ci
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package org.rut.util.algorithm.support; "5&"Ij,/
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import org.rut.util.algorithm.SortUtil; tL$,]I$1+
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/** <NMJkl-r8r
* @author treeroot v-tI`Qpb
* @since 2006-2-2 H-PVV&r
* @version 1.0 .;]WcC<3
*/ pL"{Uqi
public class BubbleSort implements SortUtil.Sort{ x
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/* (non-Javadoc) $<v4c5r]O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dS ojq6M
*/ 2%sZaM
public void sort(int[] data) { taE
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int temp; r8s>s6vm
for(int i=0;i for(int j=data.length-1;j>i;j--){ fAgeF$9@
if(data[j] SortUtil.swap(data,j,j-1); +6#$6 hG
} )&@YRT\c?8
} f6%k;R.Wz
} y>EW,%leC
} |%C2 cx
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} [kg?q5F)
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选择排序: ENZym
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package org.rut.util.algorithm.support; m$p}cok#+S
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import org.rut.util.algorithm.SortUtil; 5vyg-'
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/** ?6CLUu|7n
* @author treeroot w7Yu} JY^
* @since 2006-2-2 KL'1)G"OH
* @version 1.0 QPVi& *8_
*/ N4vcd=uG#
public class SelectionSort implements SortUtil.Sort { 9;+&}:IVS
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/* VcrMlcnO
* (non-Javadoc) mD'nF1o
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* $|=|"/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1
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*/ .;4N:*hY
public void sort(int[] data) { 9^XZ|`
int temp; x4I!f)8Q
for (int i = 0; i < data.length; i++) { tnJ7m8JmC
int lowIndex = i; F9
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for (int j = data.length - 1; j > i; j--) { ] 0X|_bU
if (data[j] < data[lowIndex]) { wH ,PA:
lowIndex = j; G}8tFo.d1
} <D.E.^Y
} C}h(WOcr`X
SortUtil.swap(data,i,lowIndex); `
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} 0`x>p6.)G
} }|Qh+{H*.
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} 8J3#(aBm
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Shell排序: 2 nyK'k
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package org.rut.util.algorithm.support; peVY2\1>R
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import org.rut.util.algorithm.SortUtil; n+8YTjd
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/** LO_Xrj
* @author treeroot uVqc:Q"
* @since 2006-2-2 jlBsm'M<m
* @version 1.0 M7/5e3
*/ NCKR<!(
public class ShellSort implements SortUtil.Sort{ D,cD]tB2
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/* (non-Javadoc) rN&fFI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~rV $.:%va
*/ [)I^v3]U
public void sort(int[] data) { S%\5"uGa
for(int i=data.length/2;i>2;i/=2){ +ywz@0nx
for(int j=0;j insertSort(data,j,i); jr`T6!\
} Z;uKnJh
} zeMV_rW~
insertSort(data,0,1); @ym:@<D
} nk|(cyt)
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/** t\/H. Hb
* @param data 2E-Kz?,:[
* @param j TgcCR:eL=
* @param i 1'hpg>U
*/ wo&IVy@s$
private void insertSort(int[] data, int start, int inc) { "o--MBq4
int temp; (f&V 7n
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +PYV-@q
} /(~
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} zu}uW,XH-
} Vx!ZF+
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} (Iv@SiZf(
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快速排序: #X)DFAtb
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package org.rut.util.algorithm.support; ,O:4[M !$w
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import org.rut.util.algorithm.SortUtil; aUMiRm-
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/** !\'w>y7
* @author treeroot iYLg[J"
* @since 2006-2-2 c^_+<C-F
* @version 1.0 ;ab[YMkH
*/ 7oE:]
public class QuickSort implements SortUtil.Sort{ j/Kul}Ml\*
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/* (non-Javadoc) w?D=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A@3'I ;
*/ mg*iW55g
public void sort(int[] data) { !"hlG^*9
quickSort(data,0,data.length-1); Z84w9y7O<
} d*TH$-F!p
private void quickSort(int[] data,int i,int j){ yHY2 SXm
int pivotIndex=(i+j)/2; _Q #[IH9
file://swap HHx5VI
SortUtil.swap(data,pivotIndex,j); ]fY:+Ru
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int k=partition(data,i-1,j,data[j]); # 9bw'm
SortUtil.swap(data,k,j); CM~x1f *v
if((k-i)>1) quickSort(data,i,k-1); f:8!@,I
if((j-k)>1) quickSort(data,k+1,j); -qSGa;PJ
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} XyB_8(/E
/** 6Lq8#{/]u
* @param data ]#N8e?b,
* @param i ;-i)}<
* @param j vo#$xwm1
* @return \ $TM=Ykj
*/ T pCXe\W
private int partition(int[] data, int l, int r,int pivot) { rE"FN~9P
do{ ^d>m`*px
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $m)eO8S+
SortUtil.swap(data,l,r); qW3XA$g|j'
} +^J&x>5
while(l SortUtil.swap(data,l,r); `_D A!
return l; \HD:#a
} A
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} nF-l4 =
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改进后的快速排序: ?5G;=#I
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package org.rut.util.algorithm.support; 0 Swu]OE
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import org.rut.util.algorithm.SortUtil; auB+ g'l
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/** C\[:{d
* @author treeroot #.FhN x
* @since 2006-2-2 (Rs;+S
* @version 1.0 &/Gf@[
*/ 9r:|u:i7m
public class ImprovedQuickSort implements SortUtil.Sort { \1u^?cBd
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private static int MAX_STACK_SIZE=4096; Gp_flGdGQ
private static int THRESHOLD=10; i1{)\/f3
/* (non-Javadoc) ^Ux.s Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Zs
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*/ E.B6u, Te
public void sort(int[] data) { $;";i:H`
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; 6!6R3Za$
int pivot; |]HA@7B
int pivotIndex,l,r; (j%"iQD
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stack[++top]=0; &[|Z2}
stack[++top]=data.length-1; fn5!Nr ,
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while(top>0){ g/!tp;e
int j=stack[top--]; 9*s:Vff{
int i=stack[top--]; Ln4Dq[M
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pivotIndex=(i+j)/2; zq$0 ?vGd
pivot=data[pivotIndex]; %4wHiCOg
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SortUtil.swap(data,pivotIndex,j); LCSJIt
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file://partition q:wz!~(>
l=i-1; /mn'9=ks
r=j; Lu71Qdu09
do{ ayg^js2,
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4`sW_
ks
SortUtil.swap(data,l,r); U]M5&R=?
} UD&pL'{s
while(l SortUtil.swap(data,l,r); usU6,
SortUtil.swap(data,l,j); 5^{2g^jH6
pe!"!xJE
if((l-i)>THRESHOLD){ k5X-*^U=V}
stack[++top]=i; Pp;OkI``[
stack[++top]=l-1; EO/TuKt
} cf\GC2+"^$
if((j-l)>THRESHOLD){ 1,n\Osd
stack[++top]=l+1; S:cd'68D
stack[++top]=j; (ul_bA+
} !#4b#l(e6
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} ka$la;e3
file://new InsertSort().sort(data); HC$}KoZkC
insertSort(data); k7nke^,|
} o#-^Lg&
/** @n$/2y_.
* @param data
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*/ +@+*sVb
private void insertSort(int[] data) { -{p~sRc&
int temp; 5QG?*Z~?7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dlDO?T
} (I#3![q
} QRdh2YH`
} r:t3Kf`+E-
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} xQxq33\
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归并排序: G9~ 4?v6:
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package org.rut.util.algorithm.support; x.q "FXu
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import org.rut.util.algorithm.SortUtil; l-8rCaq&J
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/** whQJWi=ck
* @author treeroot :;w#l"e7<
* @since 2006-2-2 Eu[/* t+l
* @version 1.0 T@ zV
*/ 8M7Bw[Q1
public class MergeSort implements SortUtil.Sort{ $AdBX}{
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/* (non-Javadoc) Z)<lPg!YAR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &[5pR60
*/ O&@CT] )8
public void sort(int[] data) { ,3Aiz|v-
int[] temp=new int[data.length]; scy_
mergeSort(data,temp,0,data.length-1); CWSc #E
} UYhxgPGsj
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private void mergeSort(int[] data,int[] temp,int l,int r){ SL`nt
int mid=(l+r)/2; Lv<vMIr
if(l==r) return ; ,#j'~-5
mergeSort(data,temp,l,mid); 3 ]pHc)p!.
mergeSort(data,temp,mid+1,r); se29IhS!e
for(int i=l;i<=r;i++){ #l!nBY ~
temp=data; [6\b(kS+
} sL#MYW5E
int i1=l;
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int i2=mid+1; {n(/ c33
for(int cur=l;cur<=r;cur++){ G
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if(i1==mid+1) IJD E{)
data[cur]=temp[i2++]; >LW}N!IBy
else if(i2>r) ~P'i
/*:
data[cur]=temp[i1++]; qTe@?j
else if(temp[i1] data[cur]=temp[i1++]; f7&9IW`7F^
else =OFx4#6a
data[cur]=temp[i2++]; <sls1,
} 0CK3jdZ+X
} k\-h-0[|
HmbQL2
} $#E!/vVwD7
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改进后的归并排序: ipS:)4QFxJ
-[[(Zx
package org.rut.util.algorithm.support; zxeT{AFPr?
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import org.rut.util.algorithm.SortUtil; 5 &0qr$
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/**
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* @author treeroot Yw_!40`
* @since 2006-2-2 ZWQ/BgKB
* @version 1.0 E[<*Al+N
*/ l_Zx'm
public class ImprovedMergeSort implements SortUtil.Sort { ^ U~QQ
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private static final int THRESHOLD = 10; \t)`Cp6,[b
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/* \;JZt[
* (non-Javadoc) uc/W/c u,
* `yO'-(@"gY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BO.Db``
*/ q`UaJ_7
public void sort(int[] data) { 0e1-ZP CDj
int[] temp=new int[data.length]; ~EU\\;1Rmq
mergeSort(data,temp,0,data.length-1); WWATG=
} S q{@4F}d
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private void mergeSort(int[] data, int[] temp, int l, int r) { *q+X?3
int i, j, k; "<LWz&e^^
int mid = (l + r) / 2; Zpz3?VM(
if (l == r) ilAhw4A
return; d0;?GQYn:
if ((mid - l) >= THRESHOLD) V)P8w#,
mergeSort(data, temp, l, mid); %< `D'V@
else 9dWz3b1[]
insertSort(data, l, mid - l + 1); `\f 3Ij,
if ((r - mid) > THRESHOLD) 'c# }^@G
mergeSort(data, temp, mid + 1, r); U>DCra;
else uF<?y0t
insertSort(data, mid + 1, r - mid); ~0@fK<C)O
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for (i = l; i <= mid; i++) { KD?b|y@
temp = data; bP> Kx-%q
} tS-gaT`T
for (j = 1; j <= r - mid; j++) { 73Hm:"Eqd
temp[r - j + 1] = data[j + mid]; Fu5c_"!
} ,e$6%R
int a = temp[l]; kpxGC,I^*.
int b = temp[r]; '.k'*=cq0
for (i = l, j = r, k = l; k <= r; k++) { ^b.#4i(v
if (a < b) { 6[SIDOp*^
data[k] = temp[i++]; b`@J"E}
a = temp; 7VL|\^Y `q
} else { na"!"C
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data[k] = temp[j--]; T"<)B^8f
b = temp[j]; 7Gy:T47T\@
} 'u~0rMe4})
} @0d"^
} |gIE$rt-~W
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/** O8SE)R~
* @param data _
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* @param l SZ}=~yoD(
* @param i eze%RjO}
*/ 2=/-,kOL_
private void insertSort(int[] data, int start, int len) { zTc*1(^
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Qj*.Z4ue
} xF@&wg
}
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} :q?#$?
} e.~11bx
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堆排序: &}
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package org.rut.util.algorithm.support; &BRa5`
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import org.rut.util.algorithm.SortUtil; !?=U{^|7y
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/** ;lvcg)}l
* @author treeroot T6QRr}8`/J
* @since 2006-2-2 uxB`
* @version 1.0 M X8|;t
*/ @`dlhz
public class HeapSort implements SortUtil.Sort{ *@H\J e`
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/* (non-Javadoc) :mW<
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bzxf*b1I
*/ I7~) q`
public void sort(int[] data) { ~f[ Y;
MaxHeap h=new MaxHeap(); k5Fj"U
h.init(data); igW* {)h3
for(int i=0;i h.remove(); -%@ah:iJ
System.arraycopy(h.queue,1,data,0,data.length); 5doi4b>]!
} {ywwJ
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private static class MaxHeap{ (zsv!U
F"UI=7:o
void init(int[] data){ 6 dV )pJd
this.queue=new int[data.length+1]; R TpNxr{[
for(int i=0;i queue[++size]=data; J=t}9.H~=
fixUp(size); 8-Y*b89
} XbB(<\0+
} iER@_?
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private int size=0; >6HGh#0(p
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private int[] queue; zQG{j\
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public int get() { N+@ Ff3M
return queue[1]; 6-fv<Pn
} R$8{f:Pj
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public void remove() { WFh.oe8
SortUtil.swap(queue,1,size--); (D) KU9B>
fixDown(1); oJ\g0|\qwe
} _p*8ke
file://fixdown 6{Q-]LOc[.
private void fixDown(int k) { [&PF ;)i
int j; kM{8zpn
while ((j = k << 1) <= size) { >%om[]0E
if (j < size %26amp;%26amp; queue[j] j++; 8hD[z}
if (queue[k]>queue[j]) file://不用交换 e-`.Ht
break; #$x,PeG
SortUtil.swap(queue,j,k); S`U8\KTi
k = j; o3/o2[s
} #-<Go'yF
} 4&sf{tI
private void fixUp(int k) { ?'z/S5&j
while (k > 1) { CV.|~K0O
int j = k >> 1; &h5Y_no GX
if (queue[j]>queue[k]) fy4zBI@
break; ]i$y;]f
SortUtil.swap(queue,j,k); :sJ7Wok6~
k = j; YE~IO5
} ds9'k.
} N=KtW?C
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