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。 gJGBD9wC
插入排序: r4NT`&`g?
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package org.rut.util.algorithm.support; ,^IZ[D>u)
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import org.rut.util.algorithm.SortUtil; 4Ig{#}<
/** @xF8' [<
* @author treeroot K7O?{/
* @since 2006-2-2 S7~F*CGBh
* @version 1.0 w%o4MFK=!
*/ 8(_g] u#B;
public class InsertSort implements SortUtil.Sort{ $9i5<16
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/* (non-Javadoc) WJSHLy<a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s^t1PfP(,
*/ $9_.Q/9>
public void sort(int[] data) { $}UJs <-F
int temp; 9]F&Fz/G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i+x6aQ24
} [ 6o:v8&3
} 5Kw?SRFH/
} OO
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冒泡排序: @1ta`7#
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package org.rut.util.algorithm.support; bSmaE7
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import org.rut.util.algorithm.SortUtil; iCSM1W3
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/** Y6Qb_X:
* @author treeroot
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* @since 2006-2-2 K9M.+d4
* @version 1.0 rnhf(K.{3
*/ 75}u
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public class BubbleSort implements SortUtil.Sort{ e/Oj T
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/* (non-Javadoc) KP7RrgOan&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?ZV0
*/ PRlo"kN
public void sort(int[] data) { 8v=47G
int temp; IC-xCzR
for(int i=0;i for(int j=data.length-1;j>i;j--){ f>+}U;)EF
if(data[j] SortUtil.swap(data,j,j-1); wG?kcfu
} JiLrwPex[
} z+D,:!yF
} 2P=~3g*
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} ZznWs+
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选择排序: DJ[#H
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package org.rut.util.algorithm.support; +;iesULXn
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import org.rut.util.algorithm.SortUtil; :*+BBC
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/** zPkPC}f(O
* @author treeroot fvM3.P
* @since 2006-2-2 }R5&[hxh4t
* @version 1.0 Odtck9L
*/ ,k! f`
public class SelectionSort implements SortUtil.Sort { %R"/`N9R,
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/* >`|uc
* (non-Javadoc) Iw|[*Nu-
* GO3YXO33
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *-LU'yM6Yh
*/ <_q/ +x]8
public void sort(int[] data) { RWQW/Gwx
int temp; <\~#\A=;
for (int i = 0; i < data.length; i++) { "K!BJQ
int lowIndex = i; .mrRv8>$
for (int j = data.length - 1; j > i; j--) { }UdqX1jz
if (data[j] < data[lowIndex]) { E
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lowIndex = j; _NnOmwK7
} *dTf(J
} lFV|GJ
SortUtil.swap(data,i,lowIndex); :{uUc
} s(.-bjR
} @N{Ht)1r
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} q;PzB4#
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Shell排序: kj=2+)!E7
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package org.rut.util.algorithm.support; TC#B^m`'p
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import org.rut.util.algorithm.SortUtil; B"zg85
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/** #7T ={mh
* @author treeroot J5IJy3d
* @since 2006-2-2 u.Yb#?
* @version 1.0 s?#lhI
*/ ^v5hr>m
public class ShellSort implements SortUtil.Sort{ r8>?-P
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/* (non-Javadoc) 1H
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kDa#yN\
*/ +r P<m
public void sort(int[] data) { B:.;:AEbT
for(int i=data.length/2;i>2;i/=2){ Ud*[2Oi|R
for(int j=0;j insertSort(data,j,i); B9:0|i!!A`
} |?=1tS{iT
}
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insertSort(data,0,1); K3D $
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} '+zsj0!A
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/** tp2 _OQAQ
* @param data o9\m?~g!E
* @param j ..TjEBp
* @param i <F
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*/ ;_&L^)~P$
private void insertSort(int[] data, int start, int inc) { hzo,.hS's
int temp; qW >J-,61/
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #[yl;1)
} &>fd:16
} E_rC"_Zte
} C8q-gP[
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} 6D(m8
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快速排序: D9C; JD
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package org.rut.util.algorithm.support; }TvAjLIS6
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import org.rut.util.algorithm.SortUtil; QjU"|$
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/** )^sfEYoA
* @author treeroot u;g}N'"
* @since 2006-2-2 [rsAY&.
* @version 1.0 )~(_[='
*/ yqI|BF`
public class QuickSort implements SortUtil.Sort{ 7HFO-r118
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/* (non-Javadoc) ev
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p~ItHwiT
*/ c'R|Wyf
public void sort(int[] data) { v4aGL<SO
quickSort(data,0,data.length-1); M6!brj\[|
} pBkPn+@
private void quickSort(int[] data,int i,int j){ =^v Ub
int pivotIndex=(i+j)/2; 3)\qts5
file://swap _4Pi>
SortUtil.swap(data,pivotIndex,j); RUu'9#fq
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int k=partition(data,i-1,j,data[j]); Njje g9 f
SortUtil.swap(data,k,j); S:QEHd_C
if((k-i)>1) quickSort(data,i,k-1); RA/yvr
if((j-k)>1) quickSort(data,k+1,j); 4*X$Jle|
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} h zE)>f
/** PX)qA=4q
* @param data _P1-d`b0 a
* @param i ApB0)N
* @param j Cx~z^YP'
* @return MJ08@xGa
*/ xpwzz O*U
private int partition(int[] data, int l, int r,int pivot) { k<H&4Z)d9
do{ @("AkYPj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^)~M,rW8c
SortUtil.swap(data,l,r); %C<eR_
} @oNrR$7
while(l SortUtil.swap(data,l,r); yr'`~[oSCy
return l; kq-RM#Dj:
} Q2JjBV<
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改进后的快速排序: _Hk`e}}
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package org.rut.util.algorithm.support; -bF+uCfba
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import org.rut.util.algorithm.SortUtil; } _z~:{Y
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/** nE84W$\
* @author treeroot [bXZPIz;j
* @since 2006-2-2 >2/zL.O
* @version 1.0 Fu$sfq
*/ 'P#I<?vB
public class ImprovedQuickSort implements SortUtil.Sort { 9nE%r\H
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private static int MAX_STACK_SIZE=4096; Q23y.^W%c
private static int THRESHOLD=10; Nfh(2gK+
/* (non-Javadoc) iy9]Y5b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $@Fj_
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*/ j;.&+.
public void sort(int[] data) { ,e,{6Sg6gl
int[] stack=new int[MAX_STACK_SIZE]; )Be;Zw.|
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int top=-1; J:a^''
int pivot; ZlzFmNe60
int pivotIndex,l,r; dmO|PswW
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stack[++top]=0; m/AN*`V
stack[++top]=data.length-1; FCPbp!q6
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while(top>0){ @ 2_&ti
int j=stack[top--]; w[&BY
int i=stack[top--]; vI@8DWs
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pivotIndex=(i+j)/2; I1,?qr"Zr
pivot=data[pivotIndex]; {ex]_V>
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SortUtil.swap(data,pivotIndex,j); 6BnjT
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file://partition W +E2({
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r=j; zl5S)/A
do{ 3^Y-P8.zdB
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^8iy(
SortUtil.swap(data,l,r); ITV}f#
} J,7\/O(`A
while(l SortUtil.swap(data,l,r); vY6|V$
SortUtil.swap(data,l,j); :?J$ +bm}
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if((l-i)>THRESHOLD){ a4yU[KK
stack[++top]=i; ^BZdR<;
stack[++top]=l-1; sMx\WTyz
} "`k[4C
if((j-l)>THRESHOLD){ ]{hfM
stack[++top]=l+1; ]nh)FMo
stack[++top]=j; {`LV{!
} f8lww)^,v
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} 79v&6Io
file://new InsertSort().sort(data); vuf|2!kh/
insertSort(data);
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} P_gQ-pF.
/** VWi-)
* @param data |8B[yr.b
*/ {~SR>I3sv
private void insertSort(int[] data) { y[cAU:P?
int temp; ~EBZlTN
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *K;~V
} uD"Voh|]=
} =ZQIpc
} !v-(O"a
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} iq#Z\Y(
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归并排序: - M]C-$
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package org.rut.util.algorithm.support; ?6Gq &
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import org.rut.util.algorithm.SortUtil; &Ru6Yt0W
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/** c1`o3gb
* @author treeroot 8HzEH-J
* @since 2006-2-2 aF:I]]TfK~
* @version 1.0 l},%g%}iMU
*/ p82qFzq#
public class MergeSort implements SortUtil.Sort{ R?W8l5CIk
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/* (non-Javadoc) Q|>y2g!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Wba2fD
*/ D|xSO~M5
public void sort(int[] data) { pnD#RvmW2e
int[] temp=new int[data.length]; .f}I$ "2
mergeSort(data,temp,0,data.length-1); ?@nu]~
} QMIXz[9w
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private void mergeSort(int[] data,int[] temp,int l,int r){ |
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int mid=(l+r)/2; oDC3AK&
if(l==r) return ; VbN]z:
mergeSort(data,temp,l,mid); p"T4;QBxQ
mergeSort(data,temp,mid+1,r); ZA!vxQ?P,
for(int i=l;i<=r;i++){ Q~9:}_@
temp=data; v1}
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} m*'#`v Ibb
int i1=l; %63<Iz"
int i2=mid+1; dG| iA]
for(int cur=l;cur<=r;cur++){ =X`/.:%|[
if(i1==mid+1) M1^pW63
data[cur]=temp[i2++]; qAm%h\
else if(i2>r) 0zd1:*KR,
data[cur]=temp[i1++]; c[5>kQ-nq
else if(temp[i1] data[cur]=temp[i1++]; vF_?1|*|
else +,smjg:O
data[cur]=temp[i2++]; ' o5,P/6
} /ZczfM\
} *"#>Ov>
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} pY2nv/
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改进后的归并排序:
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package org.rut.util.algorithm.support; f.,-KIiF
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import org.rut.util.algorithm.SortUtil; Q/< $ (Y
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/** 3}H94H)]a
* @author treeroot !u^(<.xJ
* @since 2006-2-2 k8h$#@^
* @version 1.0 OvFZ&S[
*/ O6`@'N>6P
public class ImprovedMergeSort implements SortUtil.Sort { X 6>Pq
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private static final int THRESHOLD = 10; $r dA0%;
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/* TPkm~>zD.
* (non-Javadoc) xT@\FwPr
* nI6`/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^,?]]=mE
*/ Abj`0\
public void sort(int[] data) { [p]Ayo$~
int[] temp=new int[data.length]; 7c+u+Yet
mergeSort(data,temp,0,data.length-1); }g3)z%Xe'[
} {&/q\UQ
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private void mergeSort(int[] data, int[] temp, int l, int r) { <uA|nYpp
int i, j, k; Z!#zr@'k
int mid = (l + r) / 2; Q
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if (l == r) 7Npz
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return; 39u!j|VH
if ((mid - l) >= THRESHOLD) #fa~^]EM]
mergeSort(data, temp, l, mid); gP<l
else 50CU|
insertSort(data, l, mid - l + 1); N?~K9jGx(
if ((r - mid) > THRESHOLD) ?4xTA
mergeSort(data, temp, mid + 1, r); =6? 3c\
else H*l8,*M}
insertSort(data, mid + 1, r - mid); /9[nogP
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for (i = l; i <= mid; i++) { {4#'`Eejj
temp = data; T9u/|OP
} B=9|g1e
for (j = 1; j <= r - mid; j++) { |vzGFfRI
temp[r - j + 1] = data[j + mid]; h8n J$jg
} ?+51 B-
int a = temp[l]; -FJ5N}R
int b = temp[r]; 65MR(+3
for (i = l, j = r, k = l; k <= r; k++) { {+Eq{8m`
if (a < b) { 5HmX-+XpK
data[k] = temp[i++]; Xmtq~}K>
a = temp; 7XdLZ4ub
} else { lqu1H&
data[k] = temp[j--]; &C?]n.A
b = temp[j]; 5?QR
} ]` 3;8,
} ji">} -
} h(>4%hF
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/** Y0U:i.)
* @param data p=eSHs{>A
* @param l Ww@Rewo
* @param i h4ZrD:D0\
*/ 2c}>}A 4
private void insertSort(int[] data, int start, int len) { cp[k[7XGD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _t3n<
} I,.>tC
} w${=]h*2
} Cvq2UNz(R
} y\ Zx{A[
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堆排序: 3TO$J
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package org.rut.util.algorithm.support; I lvjS^j
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