P2319 - Check if Matrix Is X-Matrix YouTube Solution Video Summary Solution Link APL checkMatrix ← {(1⌊⍵)≡(⊖⌈⊢)∘.=⍨⍳≢⍵} Link Kap CheckMatrix ⇐ {(1⌊⍵)≡⌽⍛⌈=⌻⍨⍳≢⍵} TinyAPL checkMatrix ← {(1⌊⍵)≡⊖⊸⌈=⊞⍨⍳≢⍵} J checkMatrix =. {{ (1<.y)-:(|.>.])=/~i.#y }} Link BQN CheckMatrix ← {(1⌊𝕩)≡⌽⊸⌈=⌜˜↕≠𝕩} Link Uiua CheckMatrix ← ≅↧1∶↥⇌.⊞=.⇡⧻. Q checkMatrix: {a: til count x; i: a =/:\: a; m: i | reverse i; m ~ x <> 0 } Julia ➡️➡️ Link MATLAB ➡️➡️ Link NumPy ➡️➡️ Link R ➡️➡️ Link Nial ➡️➡️ Link Futhark ➡️➡️ Link Ivy ➡️➡️ Link SaC ➡️➡️ Link ArrayFire ➡️➡️ Link MatX 🔜 🔜