package top100liked

import (
	"fmt"
	"testing"
)

func searchMatrix(matrix [][]int, target int) bool {
	for i := range len(matrix) {
		for j := range len(matrix[0]) {
			if matrix[i][j] == target {
				return true
			}
			if j == 0 && matrix[i][j] > target {
				return false
			}
			if matrix[i][j] > target {
				break
			}
		}
	}
	return false
}

// func searchMatrix(matrix [][]int, target int) bool {
// 	m, n := len(matrix), len(matrix[0])
// 	x, y := 0, n-1
// 	for x < m && y >= 0 {
// 		if matrix[x][y] == target {
// 			return true
// 		}
// 		if matrix[x][y] > target {
// 			y--
// 		} else {
// 			x++
// 		}
// 	}
// 	return false
// }

func TestS21(t *testing.T) {
	fmt.Println(searchMatrix([][]int{{1, 4, 7, 11, 15}, {2, 5, 8, 12, 19}, {3, 6, 9, 16, 22}, {10, 13, 14, 17, 24}, {18, 21, 23, 26, 30}}, 5))
	fmt.Println(searchMatrix([][]int{{1, 4, 7, 11, 15}, {2, 5, 8, 12, 19}, {3, 6, 9, 16, 22}, {10, 13, 14, 17, 24}, {18, 21, 23, 26, 30}}, 20))
}