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。 ~ET XXu${I
插入排序: '+*'sQvH[
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package org.rut.util.algorithm.support; ^t`0ul]c
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import org.rut.util.algorithm.SortUtil; :1v.Jk
/** 9j0o)]
* @author treeroot
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* @since 2006-2-2 i
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* @version 1.0 /U0,%
*/ s;[WN.
public class InsertSort implements SortUtil.Sort{ }yd!UU
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/* (non-Javadoc) d9 l2mJzW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m+x$LkP
*/ L} K8cB
public void sort(int[] data) { !';;q
int temp; m<J:6^H@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &QFc)QP{
} N]F}Z#h
} y<l(F?_
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冒泡排序: l;B
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package org.rut.util.algorithm.support; }-T,cA_H|
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import org.rut.util.algorithm.SortUtil; OMBH[_
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/** T`GiM%R;g
* @author treeroot yl0;Jx?
* @since 2006-2-2 jVqpokWH
* @version 1.0 |<MSV KW
*/ 2AEVBkF;M
public class BubbleSort implements SortUtil.Sort{ iV!V!0- @
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/* (non-Javadoc) 4zZ.v"laVM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y+5aT(6O
*/ }hcY5E-n
public void sort(int[] data) { \m=k~Cf:f
int temp; M
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for(int i=0;i for(int j=data.length-1;j>i;j--){ sD|}?7
if(data[j] SortUtil.swap(data,j,j-1); 7R5+Q\W
} 8Y:x+v5
} AHHV\r
} :#D~j]pP
} yq[@Cw
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选择排序: <,X=M6$0n
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package org.rut.util.algorithm.support; T`9nY!
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import org.rut.util.algorithm.SortUtil; 5Vai0Qfcu:
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/** A2$05a$%
* @author treeroot "2p\/VfA
* @since 2006-2-2 A4rkwM
* @version 1.0 Wfy+9"-;s
*/ =ADOf_n}
public class SelectionSort implements SortUtil.Sort { 3[8p,wx
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/* Av4(=}M}@
* (non-Javadoc) W Bb*2
* (H\ `/%Bp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sh?eb
*/ oxdX2"WwU
public void sort(int[] data) { t0Jqr)9}6
int temp; ]wi0qc2{
for (int i = 0; i < data.length; i++) { [ako8
int lowIndex = i; 5=%KK3
for (int j = data.length - 1; j > i; j--) { >(.Y%$9"E
if (data[j] < data[lowIndex]) { ap2g^lQXq
lowIndex = j; EY:H\4)
} ` U-vXP
} K}2G4*8S_G
SortUtil.swap(data,i,lowIndex); L27WD m^)
} #=;vg
} 1'F!C
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} !~vx|_$#
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Shell排序: u?H.Z
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package org.rut.util.algorithm.support; E+LQyvF[
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import org.rut.util.algorithm.SortUtil; *M_^I)*L
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/** "a3?m)
* @author treeroot 3:xKq4?
* @since 2006-2-2 |I29m`
* @version 1.0 nh"dPE7^
*/ hQlyqTP|2
public class ShellSort implements SortUtil.Sort{ 9v?@2sOoE
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/* (non-Javadoc) W0Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _zi| GD
*/ @65xn)CD{
public void sort(int[] data) { >EZZEd
for(int i=data.length/2;i>2;i/=2){ iz{TSU
for(int j=0;j insertSort(data,j,i); Wq"-T.i
} p>#q* eU5
} IV1Y+Z )
insertSort(data,0,1); /y6f~F
} &I(\:|`o
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/** A*A/30o|R
* @param data <;O^3_'
* @param j $mE3 FJP>
* @param i kFC*,
*/ /&_q"y9
private void insertSort(int[] data, int start, int inc) {
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int temp; [u37Hy_Gi
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )9[u*|+
} ! K_<hNG&
} &/ED.K
} \7>*ULP
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} [#RFdn<
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快速排序: k0#s{<I]E
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package org.rut.util.algorithm.support; zy nX9t
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import org.rut.util.algorithm.SortUtil; QB!_z4UJ_;
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/** FfrC/"N
* @author treeroot / o
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* @since 2006-2-2 BRskxyL&,
* @version 1.0 l|E4 7@#
*/ (GC5r#AnS
public class QuickSort implements SortUtil.Sort{ N3aqNRwlk
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/* (non-Javadoc) J:gC1g^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ry"4v_e9
*/ eq(h{*rC
public void sort(int[] data) { -,T!/E
quickSort(data,0,data.length-1); xW*Lceb
} wytMoG\
private void quickSort(int[] data,int i,int j){ )h&@}#A09
int pivotIndex=(i+j)/2; SQn.`0HT
file://swap vmrs(k "d#
SortUtil.swap(data,pivotIndex,j); 6$=>ck P
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int k=partition(data,i-1,j,data[j]); 3S]QIZ1
SortUtil.swap(data,k,j); SZ9DT
if((k-i)>1) quickSort(data,i,k-1); *($,ay$&H
if((j-k)>1) quickSort(data,k+1,j); -3v\ c~
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} K sE$^`
/** ".$kOH_:
* @param data j~K(xf
* @param i Qg~w 3~
* @param j WysWg7,r
* @return ~jzLw@"~$^
*/ _cWuRvY
private int partition(int[] data, int l, int r,int pivot) { `PL}8ydZ
do{ ncOgSj7e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]k^?=
SortUtil.swap(data,l,r); {d;z3AB
} ,52 IR[I<T
while(l SortUtil.swap(data,l,r); U&u6356
return l; Nr `R3(X
} Q2r[^Z
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} =FV(m
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改进后的快速排序: /KF@Un_Ow
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package org.rut.util.algorithm.support; d4 \
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import org.rut.util.algorithm.SortUtil; k)*apc\W
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/** rZ3ji(4HS
* @author treeroot Gt*K:KT=L
* @since 2006-2-2 MQx1|>rG
* @version 1.0 Aipm=C8
*/ IJ2'
public class ImprovedQuickSort implements SortUtil.Sort { ud5}jyJ
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private static int MAX_STACK_SIZE=4096; QJ(%rvn3
private static int THRESHOLD=10; ='b)6R
/* (non-Javadoc) 4xbWDu]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \|QB;7u
*/ =KOi#;1
public void sort(int[] data) { )G^k$j
int[] stack=new int[MAX_STACK_SIZE]; ,m?V3xvq
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int top=-1; '#3FEo
int pivot; }lX$KuD
int pivotIndex,l,r; V.*M;T\i
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stack[++top]=0; qm><}N7f
stack[++top]=data.length-1; iw/~t
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while(top>0){
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int j=stack[top--]; Z8bg5%
int i=stack[top--]; =-:%~ng
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pivotIndex=(i+j)/2; f|w;u!U(
pivot=data[pivotIndex]; Ly8=SIZ
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SortUtil.swap(data,pivotIndex,j); [>a3` 0M
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file://partition )GVTa4}p
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r=j; `9[n5-t
do{ K)>F03=uE
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \ . #Y
SortUtil.swap(data,l,r); v LN KX;9
} Ot-P
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while(l SortUtil.swap(data,l,r); ~%=%5}
SortUtil.swap(data,l,j); U&])ow):
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if((l-i)>THRESHOLD){ ~$K{E[^<
stack[++top]=i; BuRsz6n
stack[++top]=l-1; N9G xJ6
} vb>F)po1}
if((j-l)>THRESHOLD){ < r~hU*u
stack[++top]=l+1; 5\h 6"/6Df
stack[++top]=j; KZ[TW,Gw
} v.8kGF
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} SF;\*]["f
file://new InsertSort().sort(data); ";7N$hWE
insertSort(data); 'J} ?'{.
} !J;Bm,Xn6
/** ,i}EGW,9q
* @param data cKkH*0B5
*/ 9yTdbpY
private void insertSort(int[] data) { QObVJg,GD
int temp; 9FSa=<0wE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WcSvw
} KH?6O%d
} &PV%=/-J
} wg0_J<y]
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} .-HM{6J
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归并排序: !Ltx2CB2]
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package org.rut.util.algorithm.support; YFu,<8"swe
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import org.rut.util.algorithm.SortUtil; Sw E7U~
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/** /_J{JGp9
* @author treeroot %,vq@..^
* @since 2006-2-2 {jYVA~.|Z
* @version 1.0 L bJf5xdi
*/ Cx~;oWZ
public class MergeSort implements SortUtil.Sort{ C1_0 9Vc
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/* (non-Javadoc) >F7HKwg}Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,rN$ah$CL
*/ e?;c9]XO,o
public void sort(int[] data) { 'L3MHTM>[
int[] temp=new int[data.length]; _XP}fx7$C
mergeSort(data,temp,0,data.length-1); BhAT@%
} "__)RHH:8
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6B@e[VtG$
int mid=(l+r)/2; \41/84BA
if(l==r) return ; 2>X yrG
mergeSort(data,temp,l,mid); "9[2vdSX
mergeSort(data,temp,mid+1,r); |) ~-Wy
for(int i=l;i<=r;i++){ Q{S{|.w-
temp=data; B2$cY;LH
} O95gdxc
int i1=l; 4=^Ha%l
int i2=mid+1; Ms5qQ<0v_
for(int cur=l;cur<=r;cur++){ *%jtcno=Y
if(i1==mid+1) w3
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data[cur]=temp[i2++]; AfO.D?4x
else if(i2>r) ^zT=qBl
data[cur]=temp[i1++]; Z>R@
else if(temp[i1] data[cur]=temp[i1++]; 3
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else -a|b.p
data[cur]=temp[i2++]; #w5%^HwO
} (p#c p
} C=Fu1Hpb
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改进后的归并排序: E|-5=!]fX
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package org.rut.util.algorithm.support; F> Ika=z,
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import org.rut.util.algorithm.SortUtil; jdVj
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/** aLLI\3
* @author treeroot 0#Us*:[6
* @since 2006-2-2 n?6^j8i
* @version 1.0 5FB3w48
*/ 46
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public class ImprovedMergeSort implements SortUtil.Sort { lz>.mXdx
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private static final int THRESHOLD = 10; nt&%
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/* v;z8g^L
* (non-Javadoc) 5IzCQqOPgX
* @JdeOL;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =s:kC`O
*/ Kn1u1@&Xd
public void sort(int[] data) { vnbY^ASdw
int[] temp=new int[data.length]; &09~ D8f'
mergeSort(data,temp,0,data.length-1); ?G9DSk?6%Z
} VFq\{@-
%
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private void mergeSort(int[] data, int[] temp, int l, int r) { %>zG;4
int i, j, k; @pJ;L1sn
int mid = (l + r) / 2; AGwdM-$iT
if (l == r) ^f(El(w
return; M`=\ijUwN
if ((mid - l) >= THRESHOLD) wD6QN
mergeSort(data, temp, l, mid); =*-ac
else 1:DA{ejS
insertSort(data, l, mid - l + 1); r4 5}o
if ((r - mid) > THRESHOLD) $*XTX?,'
mergeSort(data, temp, mid + 1, r); -zt*C&)b
else O]="ggq&
insertSort(data, mid + 1, r - mid); F2(^OFh
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for (i = l; i <= mid; i++) { WqCER^~'>
temp = data; 9zBt
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} }HbUB$5
for (j = 1; j <= r - mid; j++) { Xk/:a}-l
temp[r - j + 1] = data[j + mid]; Yu[MNX;G
} K`|V1L.m
int a = temp[l]; *r~6R
int b = temp[r]; WwKpZ67$R
for (i = l, j = r, k = l; k <= r; k++) { `X&