/
validate.go
47 lines (42 loc) · 1.1 KB
/
validate.go
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/*
* Copyright © 2020, G.Ralph Kuntz, MD.
*
* Licensed under the Apache License, Version 2.0(the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIC
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package solver
func (gr *Grid) validate() bool {
return gr.validateGroup(box) && gr.validateGroup(col) && gr.validateGroup(row)
}
func (gr *Grid) validateGroup(g group) bool {
for _, c := range g.unit {
var cells [10]int
for _, p := range c {
val := *gr.pt(p)
if count[val] == 0 {
gr.Display()
panic("empty cell")
}
for d := 1; d <= 9; d++ {
if val&(1<<d) != 0 {
cells[d]++
}
}
}
for d := 1; d <= 9; d++ {
if cells[d] != 1 {
return false
}
}
}
return true
}