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。 ?V%x94B
插入排序: ]Qe;+p9vU
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package org.rut.util.algorithm.support; _H(m4~M
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import org.rut.util.algorithm.SortUtil; {XiBRs e
/** ncf=S(G+
* @author treeroot )s(J8J[b*L
* @since 2006-2-2 ,Khhu%$
* @version 1.0 N7k<q=r-
*/ *xXa4HB
public class InsertSort implements SortUtil.Sort{ y%
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/* (non-Javadoc) @47MJzC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ Afq)26D
*/ |&WeXVH E
public void sort(int[] data) { $+)2CXQe5
int temp; ;|e {J$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]kx)/n-K
} jftoqK-
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} 4UmTA_& Io
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} Ath^UKO"
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冒泡排序: qlmz@kTb
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package org.rut.util.algorithm.support; J6/Mm7R
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import org.rut.util.algorithm.SortUtil; vULlAQG
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/** "*|plB
* @author treeroot w35r\x +
* @since 2006-2-2 8=OK8UaU
* @version 1.0 &Al9%W
*/ pUki!TA
public class BubbleSort implements SortUtil.Sort{ JS% &ipm
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/* (non-Javadoc) ww82)m8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t=J\zyX!
*/ |ZW%+AQ|
public void sort(int[] data) { /`#sp
int temp; =XsdR?C
for(int i=0;i for(int j=data.length-1;j>i;j--){ /\*,|y\<
if(data[j] SortUtil.swap(data,j,j-1); nw[DI%Tp
} x&7%U
} LS@[O])$'
} 9B")/Hz_
} IO~d.Ra
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} 9qkH~B7
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选择排序: 1XQJ#J1/
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package org.rut.util.algorithm.support; Gjq:-kX\
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import org.rut.util.algorithm.SortUtil; ^^QW<
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/** |&+g ,A _w
* @author treeroot 1$oVcDLl
* @since 2006-2-2
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* @version 1.0 5"Q3,4f
*/ ).@8+}`
public class SelectionSort implements SortUtil.Sort { evryk,x
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/* #<|5<U
* (non-Javadoc) I`w1IIY?m
* &n+3^JNl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j%Mz;m4y
*/ uZ][#[u
public void sort(int[] data) { }yCJ#}
int temp; vAiNOpz#
for (int i = 0; i < data.length; i++) { J&%vBg^
int lowIndex = i; E"!C3SC [
for (int j = data.length - 1; j > i; j--) { dP[l$/
if (data[j] < data[lowIndex]) { R[ p. )F7
lowIndex = j; itb0dF1G
} MJ'|$b}
}
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SortUtil.swap(data,i,lowIndex); ),%/T,!@
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} 2T/C!^iJ)
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} ?F' gh4
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Shell排序: 8$a4[s
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package org.rut.util.algorithm.support; &\8.y2=9p
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import org.rut.util.algorithm.SortUtil; _l,?Y;OF
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/** Q>f^*FyOw<
* @author treeroot !PUbaF-.6
* @since 2006-2-2 .kh%66:
* @version 1.0 B$qmXA)ze
*/ S@]7
public class ShellSort implements SortUtil.Sort{ ~8~B VwZ_
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/* (non-Javadoc) rhY>aj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d&'z0]mOe
*/ K_j$iHqLF
public void sort(int[] data) { %:^,7
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for(int i=data.length/2;i>2;i/=2){ Ai\"w 0
for(int j=0;j insertSort(data,j,i); E< nXkqD
} v<iMlOEt
} >ijFQ667>j
insertSort(data,0,1); yO.3~H)c
} +;SQ}[
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/** a6=mE?JTB
* @param data Vr/UbgucJ
* @param j /=Bz[O
* @param i <y5V],-U
*/ X.<_TBos|
private void insertSort(int[] data, int start, int inc) { iJ_`ZM.w
int temp; cAJKFuX"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); '8`{u[:
} I$0JAy
} 7 y}b (q=
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} Jhu<^pjs
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快速排序: pj>b6^TI6C
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package org.rut.util.algorithm.support; dgPJte%i
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import org.rut.util.algorithm.SortUtil; e'aKI]>a
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/** 4S|! iOY
* @author treeroot ])h={gI
* @since 2006-2-2 ;AKtbS;H
* @version 1.0 B[7|]"L@
*/ ,}F2l|x_
public class QuickSort implements SortUtil.Sort{ *FDz20S
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/* (non-Javadoc) p.i$[6M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T.="a2iS2
*/ hkSpG{;7
public void sort(int[] data) { ?^P#P0
quickSort(data,0,data.length-1); YfUdpa0
} _`Ey),c _
private void quickSort(int[] data,int i,int j){ Pi::cf>3
int pivotIndex=(i+j)/2; Zy@35;r
file://swap vfzGRr
SortUtil.swap(data,pivotIndex,j); Ga~N7
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int k=partition(data,i-1,j,data[j]); 6~GaFmW=
SortUtil.swap(data,k,j); ;>[).fX>/
if((k-i)>1) quickSort(data,i,k-1); pW O-YZ#+
if((j-k)>1) quickSort(data,k+1,j); =Xzqp,
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} 8,2l >S
/** m3XL;1y:a
* @param data B#o(21s
* @param i kH*l83
* @param j V[,/Hw~d%
* @return \@nmM&7C!4
*/ yAtM|:qq
private int partition(int[] data, int l, int r,int pivot) { ncJ}h\:Sk
do{ AC3K*)`E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (u85$_C
SortUtil.swap(data,l,r); [YP8z~
} A@*P4E`xp
while(l SortUtil.swap(data,l,r); A$ %5l
return l; G;615p1
} 8
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} d+~c$(M)
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改进后的快速排序: ;5#P?
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package org.rut.util.algorithm.support; OTd=(dwh
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import org.rut.util.algorithm.SortUtil; S]ZO*+
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/** LfyycC2E
* @author treeroot !;lA+O-t
* @since 2006-2-2 lJoMJS;S]}
* @version 1.0 &J^@TgqL^
*/ ^ef:cS$;
public class ImprovedQuickSort implements SortUtil.Sort { K @"m0
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private static int MAX_STACK_SIZE=4096; cRz7.9-<
private static int THRESHOLD=10; 5R4h9D5
/* (non-Javadoc) $=iz&{9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UV)[a%/SB&
*/ #0`2wuo
{
public void sort(int[] data) { 6k"Wy3/
int[] stack=new int[MAX_STACK_SIZE]; : Ey
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int top=-1; =sedkrM
int pivot; 4nkH0dJQ
int pivotIndex,l,r; _Pa(5-S'KR
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stack[++top]=0; }r`!p5\$K0
stack[++top]=data.length-1; l#%Y]1*
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while(top>0){ K"eR6_k
int j=stack[top--]; gj\r>~S
int i=stack[top--]; ;3Fgy8T
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pivotIndex=(i+j)/2; B:ddlxT$
pivot=data[pivotIndex]; h0Acpd2
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SortUtil.swap(data,pivotIndex,j); 2f`u?T
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file://partition s['F?GWg
l=i-1; ?nrd$,
r=j; ^C>i(j&
do{ ;E:ra_l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?v#t{e0eQ
SortUtil.swap(data,l,r); MR%M[SK1
} x ' 3<F
while(l SortUtil.swap(data,l,r); fS-#dJC";`
SortUtil.swap(data,l,j); GhLgV
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if((l-i)>THRESHOLD){ (rt DT
stack[++top]=i; Um;ReJ8z
stack[++top]=l-1; vuuID24:
} Ts:dnGR5
if((j-l)>THRESHOLD){ Z4}Yw{=f
stack[++top]=l+1; Y[$[0
stack[++top]=j; FOB9CsMe
} 1>bkVA
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} )8ctNpQt
file://new InsertSort().sort(data); 9/D+6hJ]:
insertSort(data); go6Hb>
} a~OCo
/** ,nMLua\
* @param data ,f$A5RN
*/ ~t<BZu
private void insertSort(int[] data) { c G?RisSZ
int temp; 8l>/ZZ.NXi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >2Al+m<w
} ^O#,%>1J
} 9XF+?
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} P~;NwHZ?k
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} q ]rsp0P2
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归并排序: E~2}rK+#)
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package org.rut.util.algorithm.support; KmEm
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import org.rut.util.algorithm.SortUtil; p}R)qz-=5U
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/** Kx*;!3-V$
* @author treeroot PPDm*,T.
* @since 2006-2-2 .pu]21m=
* @version 1.0 y M , hF
*/ |w6:mtaS
public class MergeSort implements SortUtil.Sort{ azPFKg+
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/* (non-Javadoc) M <"&$qZ$R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -[`,MZf
*/ )Y
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public void sort(int[] data) { J.?6a:#bU/
int[] temp=new int[data.length]; nEQw6q~je
mergeSort(data,temp,0,data.length-1); 1P3^il7
} W: cOzJ
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private void mergeSort(int[] data,int[] temp,int l,int r){ .2!'6;K
int mid=(l+r)/2; /V46:`V
if(l==r) return ; O9=vz%
mergeSort(data,temp,l,mid); 8NPt[*
mergeSort(data,temp,mid+1,r); p[h A?dXn
for(int i=l;i<=r;i++){ n8A*Y3~R
temp=data; MCe=R R
} KSqWq:W+
int i1=l; Z)|*mJ
int i2=mid+1; E$4\Yc)(AL
for(int cur=l;cur<=r;cur++){ h?bm1e5kE
if(i1==mid+1) <2diO=
data[cur]=temp[i2++]; }c|Xr^
else if(i2>r) A"I:cw"KY
data[cur]=temp[i1++]; V\PGk<VO
else if(temp[i1] data[cur]=temp[i1++]; 0>4:(t7h\
else 7tUl$H;I/R
data[cur]=temp[i2++]; q,^^c1f
} -HP [IJP
} \2:
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} Ts|&_|
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改进后的归并排序: H;G*tje/M
K)sO
package org.rut.util.algorithm.support; (3%NudkwT
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import org.rut.util.algorithm.SortUtil; "npj%O<bd
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/** 1r\? uD
* @author treeroot LC*@/((
* @since 2006-2-2 2y,NT|jp
* @version 1.0 mj%Iow.
*/ }Wn6r_:
public class ImprovedMergeSort implements SortUtil.Sort { ?#rDoYt/Sx
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private static final int THRESHOLD = 10; Q^DKKp
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/* f<!eJO:<'
* (non-Javadoc) zRD{"uqi
* :?U1^!$$1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1
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*/ y2TJDb1
public void sort(int[] data) { xx#;)]WT
int[] temp=new int[data.length]; 9%$4Ux*q
mergeSort(data,temp,0,data.length-1); X[(u]h`
} gK9@-e
#Ji&.T^U/
private void mergeSort(int[] data, int[] temp, int l, int r) { ]GJIrtS4
int i, j, k; SH<Nt[8C
int mid = (l + r) / 2; #QXB2x<*
if (l == r) +K;
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return; tegLGp@_
if ((mid - l) >= THRESHOLD) lmp0Ye|
mergeSort(data, temp, l, mid); mmu{K$9}I
else *t3fbD
insertSort(data, l, mid - l + 1); 2J|Wbey
if ((r - mid) > THRESHOLD) _Sosw|A
mergeSort(data, temp, mid + 1, r);
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else =sG C
insertSort(data, mid + 1, r - mid); B7fURL
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for (i = l; i <= mid; i++) { 'eLO#1Ipf
temp = data; U9SByqa1
} MJt?^G (w?
for (j = 1; j <= r - mid; j++) { ^^{K[sLB
temp[r - j + 1] = data[j + mid]; k129)79
} vO&%sjvH
int a = temp[l]; 54-sb~]
int b = temp[r]; E-MEMran4
for (i = l, j = r, k = l; k <= r; k++) { 2Rc#{A
if (a < b) { K!).QB'
data[k] = temp[i++]; H .JA)*b-
a = temp; ,&G