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。 "*T)L<G
插入排序: C4G)anT
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package org.rut.util.algorithm.support; asJYGqdF
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import org.rut.util.algorithm.SortUtil; @%TQ/L^|
/** ECSC,oJ
* @author treeroot K:Ap|F
* @since 2006-2-2 [Ytia#Vv
* @version 1.0 bHMlh^{`%
*/ fSP~~YSeU
public class InsertSort implements SortUtil.Sort{ ~q4y'dBy*
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/* (non-Javadoc) EtL=_D-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Oc8[8
*/ @2u<Bh}}
public void sort(int[] data) { J)-owu;
int temp; 7]^Cg;EtM:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *\`C!r
} jsG9{/Ov3
}
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} _m&VdIPO
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冒泡排序: ENmo^O#,u
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package org.rut.util.algorithm.support; P``hw=L
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import org.rut.util.algorithm.SortUtil; J^XH^`'
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/** T-@pTJ !K9
* @author treeroot ;klDt|%3j
* @since 2006-2-2 Kzm_AHA)
* @version 1.0 2ReulL8j
*/ d}G?iX;c}
public class BubbleSort implements SortUtil.Sort{ z~BB|-kp1
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/* (non-Javadoc) =MXF`k^}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *K)v&}uw
*/ ;z?XT\C$
public void sort(int[] data) { 2iGRw4`_a
int temp; p"JSYF
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for(int i=0;i for(int j=data.length-1;j>i;j--){ EW!$D
if(data[j] SortUtil.swap(data,j,j-1); AVJk
} tL5Xfd?u
} }/LYI
} I*ej_cFQ^
} }n.h)Oz
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选择排序: f4_\F/
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package org.rut.util.algorithm.support; 5A)w.i&V
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import org.rut.util.algorithm.SortUtil; `%=Jsi0.Nq
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/** J.&q[
* @author treeroot SUEw5qitB
* @since 2006-2-2 wx!*fy4hL
* @version 1.0 9t[278B6
*/ KZE.}8^%D
public class SelectionSort implements SortUtil.Sort { 2eK\$_b_
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/* BuYDw*.
* (non-Javadoc) W(8g3
* {aL$vgYT1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EH3G|3^xz
*/ yI%>
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public void sort(int[] data) { EzyIsp> _
int temp; <d^7B9O?&w
for (int i = 0; i < data.length; i++) { yjO7/<2
int lowIndex = i; 9JtvHUkO
for (int j = data.length - 1; j > i; j--) { N|j.@K
if (data[j] < data[lowIndex]) { <7 rK
lowIndex = j; %8tN$8P
} )L!R~F
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}
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SortUtil.swap(data,i,lowIndex); +E:(-$"R
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Shell排序: )eEvyU
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package org.rut.util.algorithm.support; 'k67$H
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import org.rut.util.algorithm.SortUtil; >2:S v1T
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/** ##_Za6/n
* @author treeroot S=g-&lK
* @since 2006-2-2 OgS8.wX
* @version 1.0 $iPN5@F
*/ *\WI!%
public class ShellSort implements SortUtil.Sort{ ZX;k*OrW
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/* (non-Javadoc) FNM"!z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _PbfFY #
*/ _e_%U<\4
public void sort(int[] data) { Sg$\ab $
for(int i=data.length/2;i>2;i/=2){ T/;hIX:R
for(int j=0;j insertSort(data,j,i); &-:yn&f7
} l{U 3;
} ~K96y$ DTE
insertSort(data,0,1); ) R@gnTe
} -],?kP
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/** orHD3T%&
* @param data WS/+Yl
* @param j %`1vIr(7
* @param i =)YYx8gR
*/ 'lk74qU$
private void insertSort(int[] data, int start, int inc) { ss{= ::#
int temp; uq%3;#[0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I0vnd7
} D,j5k3< #
} ]M(f^
} 9u @h`
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} h3EDN:FQ
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快速排序: kA;Tr4EA6
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package org.rut.util.algorithm.support; <M?#3&5A
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import org.rut.util.algorithm.SortUtil; $jm<'
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/** -!>ZATL<B
* @author treeroot bMZn7c
* @since 2006-2-2 +fQL~0tA
* @version 1.0 u^$Md WP
*/ eKz~viM'
public class QuickSort implements SortUtil.Sort{ n E0~Y2
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/* (non-Javadoc) 0r ;
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ww&- `.
*/ 1GE%5
public void sort(int[] data) { nj0AO0
quickSort(data,0,data.length-1); Gy6qLM
} } !<cph
private void quickSort(int[] data,int i,int j){ w
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int pivotIndex=(i+j)/2; qetP93N_*
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SortUtil.swap(data,pivotIndex,j); DIp:S&q2
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int k=partition(data,i-1,j,data[j]); doO
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SortUtil.swap(data,k,j); ]MLLr'6?
if((k-i)>1) quickSort(data,i,k-1); y6Epi|8
if((j-k)>1) quickSort(data,k+1,j); {kl{mJ*
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} ,."(Gp
/** nl9Cdi]o
* @param data :KP'xf.
* @param i -f2`qltjb
* @param j 0#fG4D_
* @return UX'NJ1f
*/ Y+u-J4bj
private int partition(int[] data, int l, int r,int pivot) { UxcDDa/j2T
do{ 8C,utjy
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ObyuhAR
SortUtil.swap(data,l,r); ho]!G498
} @Du}
while(l SortUtil.swap(data,l,r); Y`7#[g
return l; t-m9n*\j1
} kad;Wa#h
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} sp
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改进后的快速排序: "gvw0)
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package org.rut.util.algorithm.support; IO!1|JMr6
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import org.rut.util.algorithm.SortUtil; a5}44/%
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/** wvmg)4,
* @author treeroot dXcPWbrU4
* @since 2006-2-2 u:uSsAn0$
* @version 1.0 .)@tXH=}+
*/ n*m"L|:ff
public class ImprovedQuickSort implements SortUtil.Sort { 2WPF{y%/
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private static int MAX_STACK_SIZE=4096; a][pTC\ rb
private static int THRESHOLD=10; .5!sOOs$P
/* (non-Javadoc) %- ZR~*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mbX)'. +L
*/ Z&]+A,
public void sort(int[] data) { s1Tl.p5
int[] stack=new int[MAX_STACK_SIZE]; /LI~o~m1)
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int top=-1; ,t%\0[{/B
int pivot; 8PoHBOxpc
int pivotIndex,l,r; du'}+rC
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stack[++top]=0; ik Y]8BCc
stack[++top]=data.length-1; iRUR4Zs
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while(top>0){ 5hJYy`h~
int j=stack[top--]; @4_rx u&
int i=stack[top--];
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pivotIndex=(i+j)/2; y*}vG}e%
pivot=data[pivotIndex]; /NW>;J}C
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SortUtil.swap(data,pivotIndex,j); (~G5t(+
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file://partition 3|K=%jr[
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r=j; K$<`4#i
do{ 5%QC
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4+5OR&kxZ
SortUtil.swap(data,l,r); hJ;f1dZ7}
} s!@=rq
while(l SortUtil.swap(data,l,r); {UdcX~\~
SortUtil.swap(data,l,j); AB2mt:^
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if((l-i)>THRESHOLD){ (:?5 i`
stack[++top]=i; t +3
stack[++top]=l-1; nIyROhZ
} lrs0^@.+
if((j-l)>THRESHOLD){ ;]gsJ9FK<
stack[++top]=l+1; AaVI%$
stack[++top]=j; obAs<nk
} DJViy
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} ASKAgU"h
file://new InsertSort().sort(data); .'^6QST
insertSort(data); YPha9M$AgU
} M<{5pH(K
/** ! fi &@k
* @param data 9h:jFhsA9
*/ lh,ylh
private void insertSort(int[] data) { ?iPZsV
int temp; A6^p}_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E!zd(
} 1V|< A
} ( zn_8s
} 0" U5oP[
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} ),cQUB
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归并排序: t]
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package org.rut.util.algorithm.support; u}K5/hC
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import org.rut.util.algorithm.SortUtil; aBXYri
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/** zwM"`z
* @author treeroot :y+B;qw
* @since 2006-2-2 6=ZRn gQ
* @version 1.0 Q`.'-iq
*/ xwTijSj
public class MergeSort implements SortUtil.Sort{ `z9)YH
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/* (non-Javadoc) VHXI@UT*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "gXxRHTX
*/ #4P8Rzl$/
public void sort(int[] data) { >I$B=
int[] temp=new int[data.length]; K #qoR /:
mergeSort(data,temp,0,data.length-1); &`9j)3^J.
} { 1+Cw?1d
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private void mergeSort(int[] data,int[] temp,int l,int r){ ]b4pI*:$I
int mid=(l+r)/2;
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if(l==r) return ; <8u>_o6
mergeSort(data,temp,l,mid); 0JmFQ^g(
mergeSort(data,temp,mid+1,r); R%>jJ[4\[
for(int i=l;i<=r;i++){
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temp=data; W|)GV0YM
} oN *SRaAp
int i1=l; cC^W2\
int i2=mid+1; 9@:BK;Fi
for(int cur=l;cur<=r;cur++){ v6wRME;JA
if(i1==mid+1) JB&G~7Q85
data[cur]=temp[i2++]; 3p:=xL
else if(i2>r) Z5((1J9
data[cur]=temp[i1++]; ?qju
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else if(temp[i1] data[cur]=temp[i1++]; 2 dHM
else u?Fnlne4@
data[cur]=temp[i2++]; Oo FgQEr@
} >vUB%OLyP
} "6?lQw
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} aXMv(e+
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改进后的归并排序: ZU=,f'bU
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package org.rut.util.algorithm.support; o^HNF+sm
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import org.rut.util.algorithm.SortUtil; b<[jaI0
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/** qs=Gj?GwGQ
* @author treeroot 4HM;K_G%{
* @since 2006-2-2 +T9Q_e*
* @version 1.0 Fj
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*/ ,mB Z`X@N
public class ImprovedMergeSort implements SortUtil.Sort { =v.{JV#
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private static final int THRESHOLD = 10; js~tKUvg
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/* >9ob *6q,
* (non-Javadoc) 1Fv8T'
* TYYp"wx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2b5 #PcKa
*/ +a|"{
public void sort(int[] data) { zJ5hvDmC
int[] temp=new int[data.length]; X4a^mw\"
mergeSort(data,temp,0,data.length-1); }i(qt&U;
} !{;[xXK4M
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private void mergeSort(int[] data, int[] temp, int l, int r) { '!p=aF9L
int i, j, k; grr'd+_ e
int mid = (l + r) / 2; aSel*
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if (l == r) Re>AsnA[
return; l09Fn>wa
if ((mid - l) >= THRESHOLD) "u_i[[y
mergeSort(data, temp, l, mid); jAXR`D
else cv2]*
insertSort(data, l, mid - l + 1); 2gt+l?O<PS
if ((r - mid) > THRESHOLD) ^EF'TO$
mergeSort(data, temp, mid + 1, r); yf!,4SUkU
else :Zza)>l
insertSort(data, mid + 1, r - mid); UVrQV$g!
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for (i = l; i <= mid; i++) { Pg`JQC|
temp = data; ndw7v
} ;+sl7qlA4
for (j = 1; j <= r - mid; j++) { xOythvO
temp[r - j + 1] = data[j + mid]; t-WjL@$F/
} -OrR $w|e
int a = temp[l]; WSRy%#
int b = temp[r]; n0Go p^3
for (i = l, j = r, k = l; k <= r; k++) { 8!&nKy<Y
if (a < b) { uVGa(4u}
data[k] = temp[i++]; [& ^RP,N~
a = temp; /be=u@KV
} else { n#4Gv|{XMD
data[k] = temp[j--]; I.1D*!tz
b = temp[j]; w]nX?S8
} Z&Ue|Z4Qt
} +c--&tBo
} iwU[6A
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/** Di> rO038
* @param data 2:Q(Gl`<l
* @param l ;\qXbL7
* @param i P>(P2~$Y"
*/ *:g_'K"+
private void insertSort(int[] data, int start, int len) { gyev5txn
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Fi4UaJ3K
} rFey4zzz
} pLnB)z?
} h./P\eDc
} yoQ\lk
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堆排序: iCP~O
Pz%~ST
package org.rut.util.algorithm.support; a[sKE?
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import org.rut.util.algorithm.SortUtil; ^]>aHz9
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/** yS!(Ap
* @author treeroot 8O7Yv<
* @since 2006-2-2 =xL )$DTg)
* @version 1.0 L[y Pjw:0
*/ )#C
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public class HeapSort implements SortUtil.Sort{ RF?DtNuq
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