Easy to understand Java solution
The thinking is intuitive:\n\n\nclass Solution {\n    public boolean checkIfPangram(String sentence) {\n        boolean a = false;\n        boolean b = false;\n
The thinking is intuitive:\n\n```\nclass Solution {\n    public boolean checkIfPangram(String sentence) {\n        boolean a = false;\n        boolean b = false;\n        boolean c = false;\n        boolean d = false;\n        boolean e = false;\n        boolean f = false;\n        boolean g = false;\n        boolean h = false;\n        boolean ii = false;\n        boolean j = false;\n        boolean k = false;\n        boolean l = false;\n        boolean m = false;\n        boolean n = false;\n        boolean o = false;\n        boolean p = false;\n        boolean q = false;\n        boolean r = false;\n        boolean s = false;\n        boolean t = false;\n        boolean u = false;\n        boolean v = false;\n        boolean w = false;\n        boolean x = false;\n        boolean y = false;\n        boolean z = false;\n        for (int i = 0; i < sentence.length(); i++) {\n            if (sentence.charAt(i) == \'a\') {\n                a = true;\n            } else if (sentence.charAt(i) == \'b\') {\n                b = true;\n            } else if (sentence.charAt(i) == \'c\') {\n                c = true;\n            } else if (sentence.charAt(i) == \'d\') {\n                d = true;\n            } else if (sentence.charAt(i) == \'e\') {\n                e = true;\n            } else if (sentence.charAt(i) == \'f\') {\n                f = true;\n            } else if (sentence.charAt(i) == \'g\') {\n                g = true;\n            } else if (sentence.charAt(i) == \'h\') {\n                h = true;\n            } else if (sentence.charAt(i) == \'i\') {\n                ii = true;\n            } else if (sentence.charAt(i) == \'j\') {\n                j = true;\n            } else if (sentence.charAt(i) == \'k\') {\n                k = true;\n            } else if (sentence.charAt(i) == \'l\') {\n                l = true;\n            } else if (sentence.charAt(i) == \'m\') {\n                m = true;\n            } else if (sentence.charAt(i) == \'n\') {\n                n = true;\n            } else if (sentence.charAt(i) == \'o\') {\n                o = true;\n            } else if (sentence.charAt(i) == \'p\') {\n                p = true;\n            } else if (sentence.charAt(i) == \'q\') {\n                q = true;\n            } else if (sentence.charAt(i) == \'r\') {\n                r = true;\n            } else if (sentence.charAt(i) == \'s\') {\n                s = true;\n            } else if (sentence.charAt(i) == \'t\') {\n                t = true;\n            } else if (sentence.charAt(i) == \'u\') {\n                u = true;\n            } else if (sentence.charAt(i) == \'v\') {\n                v = true;\n            } else if (sentence.charAt(i) == \'w\') {\n                w = true;\n            } else if (sentence.charAt(i) == \'x\') {\n                x = true;\n            } else if (sentence.charAt(i) == \'y\') {\n                y = true;\n            } else if (sentence.charAt(i) == \'z\') {\n                z = true;\n            }\n        }\n        return a && b && c && d && e && f && g && h && ii && j && k && l && m && n && o && p && q && r && s && t && u && v && w && x && y && z;\n    }\n}\n```
['Java']