leetcode/src/bin/monotonic-array.rs at main · bestgopher/leetcode · GitHub

Name: leetcode/src/bin/monotonic-array.rs at main · bestgopher/leetcode · GitHub
Rating: 4.8 (6782 reviews)
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#![allow(dead_code, unused, unused_variables)]

fnmain(){}

structSolution;

implSolution{
pubfnis_monotonic1(a:Vec<i32>) -> bool{
if a.len() <= 1{
returntrue;
}

letmut f = None;

for i in1..a.len(){
if a[i] == a[i - 1]{
continue;
}

if f.is_none(){
 f = Some(a[i] > a[i - 1]);
}
ifletSome(s) = f {
if s && a[i] < a[i - 1]{
returnfalse;
}

if !s && a[i] > a[i - 1]{
returnfalse;
}
}
}

true
}

pubfnis_monotonic(a:Vec<i32>) -> bool{
if a.len() <= 1{
returntrue;
}

letmut s = 0;

for i in1..a.len(){
if a[i] == a[i - 1]{
continue;
}

if s == 0 && a[i] - a[1] != 0{
 s = a[i] - a[i - 1];
}

if s * a[i] - a[i - 1] < 0{
returnfalse;
}
}

true
}
}