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。 O&%T_Zk@@
插入排序: AYerz
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package org.rut.util.algorithm.support; "61n?Z#,M[
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import org.rut.util.algorithm.SortUtil; 0 pz
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/** /!3:K<6@
* @author treeroot
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* @since 2006-2-2 7dW&|U
* @version 1.0 k9?+9bExXA
*/ a}{! %5
public class InsertSort implements SortUtil.Sort{ GDntGTE~sk
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/* (non-Javadoc) $SgD|
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p.olXP
*/ ] lTfi0}g_
public void sort(int[] data) { YiMecu
int temp; Hn.UJ4V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yh!vl&8M
} -|mRJVl8
} "+_0idpF
} tx-bzLo\
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} Grv|Wuli
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冒泡排序: [V~bo/n
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package org.rut.util.algorithm.support; ["9$HL
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import org.rut.util.algorithm.SortUtil; J ASn\z
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/** Czn7,KE8X
* @author treeroot <Z[R08 k
* @since 2006-2-2 4[wP$
* @version 1.0 c9
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*/ Pl>t\`1:|A
public class BubbleSort implements SortUtil.Sort{ ij^!TY[0
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/* (non-Javadoc) 64@s|m*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r8$TT\?~
*/ :gC2zv
public void sort(int[] data) { 5#PhaVc
int temp; m+ YgfR
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]y
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if(data[j] SortUtil.swap(data,j,j-1); J>Ha$1}u/
} $%'z/'o!
} SqQB>;/p
} fZC,%p
} on$a]zx'@
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} cx)
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选择排序: 29oEkaX2o
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package org.rut.util.algorithm.support; ?0X.Ith^.
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import org.rut.util.algorithm.SortUtil; 2}-W@R
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/** AJmzg
* @author treeroot :W"ITY(
* @since 2006-2-2 2)YLs5>W%
* @version 1.0 NGu]|p
*/ e^QOn
public class SelectionSort implements SortUtil.Sort { 25r=Xv
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/* R
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* (non-Javadoc) mUxD.;P
* HN+z7 Q8hH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) th{h)( +H
*/ vP!gLN]TV
public void sort(int[] data) { ;d4_l:9p
int temp; &[uGfm+@
for (int i = 0; i < data.length; i++) { CDhk!O..
int lowIndex = i; T7`Jtqf
for (int j = data.length - 1; j > i; j--) { v.MWO]L
if (data[j] < data[lowIndex]) { 4m:E:zVn
lowIndex = j; tti.-
} $6N.ykJ
} :%gBcL9T
SortUtil.swap(data,i,lowIndex); (0r6_8e6xv
} e[n>U@
} !*;)]j
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} 5h&8!!$[
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Shell排序: z; +x`i.
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package org.rut.util.algorithm.support; &x3y.}1
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import org.rut.util.algorithm.SortUtil; lq~n*uwO}t
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/** !TcjB;q'
* @author treeroot 4-MA!&
* @since 2006-2-2 +?8nY.~,'
* @version 1.0 n"JrjvS
*/ Kfh"XpWc$
public class ShellSort implements SortUtil.Sort{ 6 S8#[b
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/* (non-Javadoc) 4Hw8w7us:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Ip}uy[Y
*/ O;~1M3Ii
public void sort(int[] data) { W$W7U|Z9y+
for(int i=data.length/2;i>2;i/=2){ tF4"28"h
for(int j=0;j insertSort(data,j,i); )u$A!+fo
} N.]8qzW
} =B\?(
insertSort(data,0,1); ZHT.+X:_
} xAI<<[-
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/** ][Kj^7/
* @param data kF?\p`[a
* @param j UU_k"D~
* @param i lPH]fWt<
*/ +J2=\YO
private void insertSort(int[] data, int start, int inc) { I?=Q
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int temp; @S{,g;8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }.#C9<"}
} "(5M }5D
} w*?JW
} F
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} wS4zAu
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快速排序: I<$lpU_H
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package org.rut.util.algorithm.support; [30< 0
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import org.rut.util.algorithm.SortUtil; /2c?+04+
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/** n`6vM4rM)
* @author treeroot _\[Zr.y
* @since 2006-2-2 3Cpix,Dc
* @version 1.0 /<@oUv
*/ ?D#Vh a
public class QuickSort implements SortUtil.Sort{ ']V 2V)t
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/* (non-Javadoc) XG0,@Ly
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'vXrA
*/ Y!KGJ^.mF
public void sort(int[] data) { b[$>HB_Na
quickSort(data,0,data.length-1); E0YXgQa
} l)?c3
private void quickSort(int[] data,int i,int j){ ]5^u^
int pivotIndex=(i+j)/2; "ey~w=B$M
file://swap `H\^#Zu
SortUtil.swap(data,pivotIndex,j); A&z
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int k=partition(data,i-1,j,data[j]); Cu}Rq!9i
SortUtil.swap(data,k,j); TOQvZ?_
if((k-i)>1) quickSort(data,i,k-1); SQ@@79A
if((j-k)>1) quickSort(data,k+1,j); +!X^E9ra
sGV%O=9?2
} GDk/85cv0$
/** >4;A(s`
* @param data ydpsPU?wj5
* @param i Ji=E 1R
* @param j VBOq~>V6(v
* @return )UWE.oBI
*/ U!('`TYe
private int partition(int[] data, int l, int r,int pivot) { _c[t.\-`]
do{ h4V.$e<T&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c|E
SortUtil.swap(data,l,r); k1X <jC]P
} )+{'p0
while(l SortUtil.swap(data,l,r); A w83@U
return l; L|v1=qNH4
} Zcc6E2
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} IKpNc+;p
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改进后的快速排序: ,#<"VU2 bC
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package org.rut.util.algorithm.support; \OOj]gAe
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import org.rut.util.algorithm.SortUtil; $L?stgU
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/** Y1+f(Q
* @author treeroot WO]dWO6Mm
* @since 2006-2-2 __)9JF
* @version 1.0 <MY_{o8d
*/ x}-r Ar
public class ImprovedQuickSort implements SortUtil.Sort { gCd9"n-e
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private static int MAX_STACK_SIZE=4096; t0/fF'GZD
private static int THRESHOLD=10; sURHj&:t|
/* (non-Javadoc) "xw2@jGpG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z[|(}9v?~
*/ N1_nBQF )
public void sort(int[] data) { Fe:0nr9;
int[] stack=new int[MAX_STACK_SIZE]; MSw/_{
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int top=-1; *&LVn)@[`
int pivot; ky,+xq
int pivotIndex,l,r; I( pU_7mw
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stack[++top]=0; %A?Ym33
stack[++top]=data.length-1; SZEX;M
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while(top>0){ IS"UBJ6p
int j=stack[top--]; Yk[yG;W
int i=stack[top--]; 9;kWuP>k4u
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pivotIndex=(i+j)/2; (eHvp
pivot=data[pivotIndex]; Aqq%HgY:t
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SortUtil.swap(data,pivotIndex,j); IeE+h-3p
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file://partition 0/;T\9
l=i-1; +\SbrB P
r=j; "h\{PoG
do{ JQ!D8Ut
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [K,&s8N5
SortUtil.swap(data,l,r); 6dV92:
} Bx2E9/S3
while(l SortUtil.swap(data,l,r); Q']:k}y
SortUtil.swap(data,l,j); \3Ys8umKq
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if((l-i)>THRESHOLD){ 3Cq17A 9
stack[++top]=i; (',G
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stack[++top]=l-1; ;DBO
} o1QK@@}
if((j-l)>THRESHOLD){ -_v[oqf$
stack[++top]=l+1; %=%jy
stack[++top]=j; KR#Bj?fz-H
} [p|-G*=00
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} $GPenQ~},
file://new InsertSort().sort(data); DM"`If%3j
insertSort(data); :U^a0s%B
} ]Ocf %(
/** a'rN&*P
* @param data ^!!@O91T
*/ yD(0:g#
private void insertSort(int[] data) { =DUsQN!
int temp; &$|k<{j[<f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Cj,fP[p#7
} ZI-)'
} USfOc
} Z'hW;^e%_z
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} j'I$F1>Te
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归并排序: h{VCx#!]
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package org.rut.util.algorithm.support; /&Khk #
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import org.rut.util.algorithm.SortUtil; rer=o S
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/** ^;!A`t
* @author treeroot G/bWn@
* @since 2006-2-2 `dx+Qp
* @version 1.0 JO1KkIV
*/ /m(vIl
public class MergeSort implements SortUtil.Sort{ U_y)p Cd
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/* (non-Javadoc) \&n]W\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KzG8K 6wZ
*/ WEZ(4ah
public void sort(int[] data) { s'J8E+&5
int[] temp=new int[data.length]; SzMh}xDh2
mergeSort(data,temp,0,data.length-1); H@.j@l
} !Yz~HO,u+
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private void mergeSort(int[] data,int[] temp,int l,int r){ .YKQ6
int mid=(l+r)/2; z
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if(l==r) return ; @_YlHe&W
mergeSort(data,temp,l,mid); y!h$Z6.
mergeSort(data,temp,mid+1,r); g< M\zD
for(int i=l;i<=r;i++){ OIe {Sx{y
temp=data; )UO:J7K
} FU E/uh
int i1=l; OXK?R\ E+
int i2=mid+1; ZjF$zVk
for(int cur=l;cur<=r;cur++){ ~ucOQVmz@
if(i1==mid+1) .yd{7Te
data[cur]=temp[i2++]; 80x
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else if(i2>r) 0bVtku K;G
data[cur]=temp[i1++]; FDkRfh K
else if(temp[i1] data[cur]=temp[i1++]; VX2KE@
else 1.4]T, `
data[cur]=temp[i2++]; j]6Z*AxQ
} !LVWggk1
} Eo!1
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} tK`sVsm>
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改进后的归并排序: .R#p<"$I
j*Ta?'*
package org.rut.util.algorithm.support; G29PdmY$<
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import org.rut.util.algorithm.SortUtil; ={o>g'
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/** <=l!~~%
* @author treeroot qH: `
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* @since 2006-2-2 snK$? 9vh
* @version 1.0 Zm>Q-7r9
*/ k3da*vwE
public class ImprovedMergeSort implements SortUtil.Sort { \SHYwD}*Pr
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private static final int THRESHOLD = 10; y+)][Wa0
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/* T2P0(rEz
* (non-Javadoc) !k)}p_e
* ;XMbjWc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zrr3='^s
*/ ;e_dk4_
public void sort(int[] data) { Ou"QUn|
int[] temp=new int[data.length]; vQ#$.*Cvn
mergeSort(data,temp,0,data.length-1); G|Yw
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} q.yS j
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private void mergeSort(int[] data, int[] temp, int l, int r) { Oz#$x
int i, j, k; '>^+_|2
int mid = (l + r) / 2;
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if (l == r) Og4 X3QG
return; DN2K4%cM%'
if ((mid - l) >= THRESHOLD) >_!pg<{,
mergeSort(data, temp, l, mid); Ok/~E
else m\(4y Gj
insertSort(data, l, mid - l + 1); B$1e AwT9
if ((r - mid) > THRESHOLD) B.-5$4*s
mergeSort(data, temp, mid + 1, r); 9<I@}w
else >9'G>~P~I=
insertSort(data, mid + 1, r - mid); >eQ;\j
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for (i = l; i <= mid; i++) { G"T)+!6t
temp = data; TRL4r_
} `C%,Nj
for (j = 1; j <= r - mid; j++) { : ~"^st_[!
temp[r - j + 1] = data[j + mid]; =QHW>v
} <W2}^q7F^
int a = temp[l]; *91iFeKj=
int b = temp[r]; >"q0"zrN,
for (i = l, j = r, k = l; k <= r; k++) { ^hv
if (a < b) { .+t{o[
data[k] = temp[i++]; ^W5rL@h_
a = temp; bo '
} else { a,b;H(em
data[k] = temp[j--]; VO] Jvf
b = temp[j]; Q^$IlzG7i
} y44FejH(v
} "IA[;+_"
}
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/** :~3sW< PR
* @param data 1k6f|Al-
* @param l Wp/!;
* @param i *[*LtyCQt4
*/ R/R[r> 1)6
private void insertSort(int[] data, int start, int len) { MNzq,/Wf
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Vy.A`Hz
} gV1&b
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} 4-^|e
}
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} $)\%i =
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堆排序: @+h2R
I~\j%zD
package org.rut.util.algorithm.support; bAms-cXm
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import org.rut.util.algorithm.SortUtil; 8+{WH/}y8
}`{>]2
/** U>7"BpC
* @author treeroot hSSF]
* @since 2006-2-2 0kS[`a(}J
* @version 1.0 WY_}D!O
*/ XeX0\L')R
public class HeapSort implements SortUtil.Sort{ xRpL\4cs
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/* (non-Javadoc) }@=m[Zx#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Un@B D}@\
*/ 4SCb9|/Q
public void sort(int[] data) { yS p]+
MaxHeap h=new MaxHeap(); .",E}3zn
h.init(data); an={h,
for(int i=0;i h.remove(); wvvMesX<L
System.arraycopy(h.queue,1,data,0,data.length); }WS%nQA
} )` -b\8uw
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private static class MaxHeap{ ,uqSq
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sv
void init(int[] data){ zk=5uKcPE
this.queue=new int[data.length+1]; 9#{?*c6
for(int i=0;i queue[++size]=data; gm~Ka%O|F
fixUp(size); NX&mEz
} km,}7^?F0r
} ZfM(%rx
y5B4t6M(
private int size=0; L3lf2 8W
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private int[] queue; QE[ETv
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public int get() { ?&EPZq