HTMLify

func minimumRecolors(blocks string, k int) int {
    m := len(blocks)
    for i:=0; i<len(blocks)-k+1; i++ {
        c := 0
        for j:=0; j<k; j++ {
            if blocks[i+j] == 'W' {
                c++
            }
        }
        if c < m {
            m = c
        }
    }
    return m
}